JP2017206036A - Master cylinder arrangement structure on saddle-riding type vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a saddle-riding type vehicle in which a master cylinder unit comprising a master cylinder which outputs a brake liquid pressure according to an operation of a brake lever arranged on a front side of a grip provided on an end part of a steering handle, and a reserve tank for storing a surplus brake liquid, is attached to a steering handle on inside of a vehicle width direction of a grip, capable of suppressing a projection amount of the master cylinder unit from the steering handle to a front side, for enhancing a freedom degree of a design layout around the steering handle.SOLUTION: A master cylinder 24A is arranged so as to cross a steering handle 17 in plan view.SELECTED DRAWING: Figure 3

Description

  According to the present invention, a grip is provided at an end of a steering handle that is slidably supported on a head pipe of a vehicle body frame, and brake hydraulic pressure is output in accordance with an operation of a brake lever disposed in front of the grip. A master cylinder unit having a master cylinder for storing and a reserve tank for storing surplus brake fluid is attached to the steering handle on the inner side in the vehicle width direction of the grip. Regarding improvements.

  A saddle-ride type vehicle in which a master cylinder extends in the front-rear direction and is disposed in front of a steering handle is known from Patent Document 1.

JP 2001-63546 A

  However, in the one disclosed in Patent Document 1, when the cylinder body of the master cylinder is extended in the front-rear direction, the master cylinder unit is enlarged from the steering handle to the front, so that the steering handle and the front cowl Considering avoidance of interference, it is necessary to make the steering handle's cutting angle shallower, or to provide a notch that matches the shape of the master cylinder in the front cowl, and the degree of freedom in design layout around the steering handle Was narrowed. In addition, if the cylinder body is extended in the left-right direction, there are restrictions on the installation of instruments and switches, and restrictions on the lever ratio of the brake lever, which may reduce the operability of the brake lever.

  The present invention has been made in view of such circumstances, and it is possible to increase the degree of freedom in design layout around the steering handle by suppressing the amount of forward protrusion from the steering handle of the master cylinder unit. An object of the present invention is to provide a master cylinder arrangement structure in a riding type vehicle.

  In order to achieve the above object, according to the present invention, a grip is provided at an end of a steering handle that is slidably supported on a head pipe included in a vehicle body frame, and an operation of a brake lever disposed in front of the grip is performed. In a saddle-ride type vehicle in which a master cylinder unit having a master cylinder that outputs brake fluid pressure in response to the above and a reserve tank that stores excess brake fluid is attached to the steering handle on the inner side in the vehicle width direction of the grip. The first feature is that the master cylinder is arranged so as to intersect the steering handle in a plan view.

  According to the present invention, in addition to the configuration of the first feature, an attachment portion that is provided integrally with the cylinder body of the master cylinder and protrudes from the cylinder body, and the steering handle is sandwiched between the attachment portion. A cap is mutually fastened by a fastening member extending in the vertical direction, and a cylinder hole formed in the cylinder body is disposed below the fastening member.

  In addition to the configuration of the first or second feature, the third feature of the present invention is that the master cylinder unit is disposed so as to be within the width in the front-rear direction of the steering handle.

  According to the present invention, in addition to the configuration of the second feature, one end portion of a hydraulic pressure pipe that guides brake fluid pressure from the master cylinder is at least partially planar with a rearmost fastening member among the plurality of fastening members. A fourth feature is that the cylinder body is connected to a rear end portion of the cylinder body via a connecting member disposed at a position overlapping in view.

  Furthermore, in addition to any of the first to fourth features, the present invention provides a knuckle guard that protects the grip attached to the steering handle so as to cover the brake lever from the front. A fifth feature is that the knuckle guard is formed so as to cover at least a part thereof in front view.

  According to the first feature of the present invention, since the master cylinder intersects the steering handle in a plan view, the amount of protrusion of the master cylinder forward from the steering handle can be suppressed, and the master handle is connected to the steering handle. The cylinder unit can be mounted compactly, and the degree of freedom in design layout around the steering handle can be increased.

  According to the second feature of the present invention, the cap sandwiching the steering handle between the cylinder body of the master cylinder and the mounting portion integral with the cylinder body is fastened to the mounting portion by the fastening member extending in the vertical direction. Since the cylinder hole in the body is located below the fastening member, the arrangement position of the master cylinder is not limited by the fastening member, and the amount of forward protrusion of the master cylinder unit from the steering handle is further reduced. In this way, the master cylinder unit can be more compactly attached to the steering handle.

  According to the third feature of the present invention, since the master cylinder unit fits in the front-rear direction width of the steering handle, the steering angle by the steering handle can be increased, and the turning angle of the front wheel is increased and the steering performance is increased. Will improve.

  According to the fourth feature of the present invention, the cylinder is connected via the connecting member in which one end portion of the hydraulic pipe line is disposed at a position at least partially overlapping with the rearmost fastening member among the plurality of fastening members in plan view. Since it is connected to the rear end of the body, it is possible to suppress the rearward protrusion of the hydraulic line from the steering handle and to increase the steering angle.

  Further, according to the fifth aspect of the present invention, the knuckle guard for protecting the grip is attached to the steering handle, and the knuckle guard covers at least a part of the master cylinder in front view. By disposing the knuckle guard in the space generated by suppressing the forward protrusion amount of the master cylinder, it is possible to protect the master cylinder while suppressing the enlargement around the steering handle.

1 is a right side view of a motorcycle according to a first embodiment. FIG. 2 is an enlarged plan view taken in the direction of arrow 2 in FIG. 1. FIG. 3 is a sectional view taken along line 3-3 in FIG. 2. FIG. 4 is a front view taken along arrow 4 in FIG. 2. It is a top view corresponding to FIG. 2 of 2nd Embodiment. FIG. 6 is a sectional view taken along line 6-6 of FIG. It is a top view corresponding to FIG. 2 of 3rd Embodiment. FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 7. It is a top view corresponding to FIG. 2 of 4th Embodiment. FIG. 10 is a sectional view taken along line 10-10 in FIG. 9; It is sectional drawing corresponding to FIG. 2 of 5th Embodiment. 12 is a sectional view taken along line 12-12 of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, front and rear, left and right, and top and bottom refer to directions as viewed from the occupant riding the motorcycle.

  The first embodiment of the present invention will be described with reference to FIGS. 1 to 4. First, in FIG. 1, a front wheel WF is attached to a head pipe 15 of a body frame F of a motorcycle that is a saddle-ride type vehicle. A front fork 16 pivotally supported at the lower end portion and a steering handle 17 are supported so as to be steerable, and the vehicle body frame F is supported by a pivot frame 18 provided in the middle portion in the front-rear direction so as to be swingable up and down. A rear wheel WF is disposed behind the pivot frame 18.

  An internal combustion engine E that exhibits a driving force for driving the rear wheel WR is mounted on the vehicle body frame F so as to be disposed between the front wheel WF and the rear wheel WR, and above the internal combustion engine E. A fuel tank 19 disposed and a riding seat 20 disposed behind the fuel tank 19 are supported on the vehicle body frame F so that an occupant operating the steering handle 17 gets on the vehicle.

  In FIG. 2, a grip 21 is provided at the right end of the steering handle 17 so that an occupant sitting on the riding seat 20 grips with the right hand. The grip 21 is disposed on the inner side in the vehicle width direction of the grip 21. In the position where the switch case 22 fixed to the steering handle 17 is sandwiched between the grip 21 and the steering handle 17, a brake fluid is applied to the steering handle 17 according to the operation of the brake lever 23 disposed in front of the grip 21. A master cylinder unit 26A having a master cylinder 24A for outputting pressure and a reserve tank 25A for storing excess brake fluid is attached.

  Referring also to FIG. 3, the master cylinder 24 </ b> A is liquid between a cylinder body 28 </ b> A having a cylinder hole 27 that extends in the front-rear direction and has a rear end closed, and a rear end closing part of the cylinder hole 27. A piston 29 that is slidably fitted into the cylinder hole 27 so as to form a pressure chamber 30 and a piston 29 that urges the piston 29 toward the side that increases the volume of the hydraulic pressure chamber 30, that is, forward. The master cylinder 24A is disposed so as to intersect the steering handle 17 in a plan view.

  A mounting portion 32 that protrudes upward is integrally provided at the rear portion of the cylinder body 28A. The mounting portion 32 and a cap 33 that sandwiches the steering handle 17 between the mounting portion 32 and the vertical direction. The cylinder hole 27 is disposed below the bolts 34 and 35, and is fastened to each other by a pair of bolts 34 and 35 that are sandwiched between the steering handle 17 from the front and rear.

  The reserve tank 25A is disposed inward in the vehicle width direction of the master cylinder 24A, above the cylinder hole 27, and in front of the steering handle 17, so that the cylinder body in the master cylinder 24A is disposed. It is integrally connected to the front part of 28A.

  A lever bracket 38 is integrally provided at the front portion of the cylinder body 28A, and an inner end portion of the brake lever 23 in the vehicle width direction is supported by the lever bracket 38 having an axis extending in the vertical direction. The shaft 39 is rotatably supported.

  The piston rod 29a coaxially and integrally formed with the piston 29 of the master cylinder 24A is in contact with a pressing projection 23a provided on the brake lever 23 from the front, and the front end of the piston rod 29a and the piston rod 29a A boot 40 is provided between the cylinder bodies 28A.

  Such a master cylinder unit 26 </ b> A is arranged so as to be within a width W in the front-rear direction of the steering handle 17 as clearly shown in FIG. 2.

  Referring also to FIG. 4, a knuckle guard 41 for protecting the grip 21 is attached to the steering handle 17 so as to cover the brake lever 23 from the front. It is formed so as to cover at least a part (a part in this embodiment) of master cylinder 24A in front view.

  By the way, the caliper 42 of the disc brake B mounted on the front wheel WF is used to guide the hydraulic pressure from the master cylinder 24A through a brake hose 43 that is a hydraulic line. Is connected to the rear end portion of the cylinder body 28A through a connecting member 44 that is taken at the rear end portion of the cylinder body 28A so as to communicate with the hydraulic pressure chamber 30.

  In addition, at least a part of the connection member 44 (the rear part of the connection member 44 in this embodiment) is viewed in plan from the rearmost bolt 35 of the pair of bolts 34 and 35 that fasten the cap 33 to the mounting portion 32. It is arranged at the overlapping position.

  Next, the operation of the first embodiment will be described. A master cylinder 24A that outputs brake hydraulic pressure in response to an operation of a brake lever 23 disposed in front of the grip 21 at the right end portion of the steering handle 17 is as follows. Since it is arranged so as to intersect with the steering handle 17 in plan view, the amount of projection of the master cylinder 24A forward from the steering handle 17 can be suppressed, and the master cylinder 24A and excess brake fluid are stored. The master cylinder unit 26 </ b> A having the reserve tank 25 </ b> A to be operated can be compactly attached to the steering handle 17, and the degree of freedom in design layout around the steering handle 17 can be increased.

  In addition, the amount of protrusion of the master cylinder 24A forward from the steering handle 17 can be suppressed, so that the brake lever 23 can be disposed closer to the steering handle 17 and the operability of the brake lever 23 can be improved. . Further, by arranging the master cylinder unit 26A in a compact manner, a motorcycle that does not give a feeling of weight around the steering handle 17 can be obtained, and the appearance can be improved. Further, by making the steering handle 17 and the surroundings compact, the steering angle of the steering wheel can be increased, the turning angle of the front wheel WF can be increased, and the steering performance can be improved.

  A mounting portion 32 that is provided integrally with the cylinder body 28A of the master cylinder 24A and protrudes upward from the cylinder body 28A and a cap 33 that sandwiches the steering handle 17 between the mounting portion 32 are vertically Since the cylinder hole 27 formed in the cylinder body 28A is disposed below the bolts 34, 35 by being fastened to each other by the bolts 34, 35 extending in the direction, the arrangement position of the master cylinder 24A is the bolt 34, 35, the master cylinder unit 26A can be more compactly attached to the steering handle 17 by suppressing the amount of forward projection of the master cylinder unit 26A from the steering handle 17 to be smaller. , The steerability can be further improved.

  Further, since the master cylinder unit 26A is disposed so as to be within the width W in the front-rear direction of the steering handle 17, the steering angle by the steering handle 17 can be increased, and the turning angle of the front wheel WF is increased. This improves the steering performance.

  A knuckle guard 41 that protects the grip 21 is attached to the steering handle 17 so as to cover the brake lever 23 from the front, and the knuckle guard 41 covers at least a part of the master cylinder 24A in front view. Therefore, the knuckle guard 41 is disposed in the space generated by suppressing the forward protrusion amount of the master cylinder 24A from the steering handle 17, so that the master cylinder 24A is prevented from being enlarged around the handle. In addition, the appearance can be improved by making the master cylinder 24A inconspicuous when viewed from the front.

  Further, a connecting member in which one end portion of the brake hose 43 for guiding the brake fluid pressure from the master cylinder 24A is disposed at a position where at least a part thereof overlaps the rearmost bolt 35 of the plurality of bolts 34, 35 in plan view. 44, the rear end of the cylinder body 28A is connected to the rear end of the brake hose 43 from the steering handle 17, and the steering angle of the steering wheel can be increased.

  A second embodiment of the present invention will be described with reference to FIG. 5 and FIG. 6, but the parts corresponding to the first embodiment are only given the same reference numerals and shown in detail. The detailed explanation is omitted.

  On the inner side in the vehicle width direction of the grip 21 at the right end of the steering handle 17, a master is arranged so as to sandwich the switch case 22 between the grip 21 and intersect the steering handle 17 in plan view. A master cylinder unit 26B having a cylinder 24A and a reserve tank 25B for storing excess brake fluid is attached.

  The master cylinder 24A is attached to the steering handle 17 in the same manner as in the first embodiment, and the reserve tank 25B is located more inward in the vehicle width direction than the master cylinder 24A in the cylinder hole 27. The cylinder body 28 </ b> A of the master cylinder 24 </ b> A is integrally connected to the cylinder body 28 </ b> A so as to be disposed above the steering handle 17.

  The same effect as that of the first embodiment can be obtained also by the second embodiment.

  A third embodiment of the present invention will be described with reference to FIG. 7 and FIG. 8, but the parts corresponding to the first embodiment are indicated by the same reference numerals and shown in detail. The detailed explanation is omitted.

  On the inner side in the vehicle width direction of the grip 21 at the right end of the steering handle 17, a master is arranged so as to sandwich the switch case 22 between the grip 21 and intersect the steering handle 17 in plan view. A master cylinder unit 26C having a cylinder 24A and a reserve tank 25C for storing excess brake fluid is attached.

  The master cylinder 24A is attached to the steering handle 17 in the same manner as in the first embodiment, and the reserve tank 25C is located more inward in the vehicle width direction than the master cylinder 24A in the cylinder hole 27. The rear end of the cylinder body 28A in the master cylinder 24A is integrated with the rear end of the master cylinder 24A so that the upper end of the master cylinder 24A is positioned above the steering handle 17 and the rear end of the cylinder body 28A. Established.

  The third embodiment can provide the same effects as those of the first embodiment.

  A fourth embodiment of the present invention will be described with reference to FIG. 9 and FIG. 10, but the portions corresponding to the first embodiment are only given the same reference numerals and are shown in detail. The detailed explanation is omitted.

  On the inner side in the vehicle width direction of the grip 21 at the right end of the steering handle 17, a master is arranged so as to sandwich the switch case 22 between the grip 21 and intersect the steering handle 17 in plan view. A master cylinder unit 26D having a cylinder 24B and a reserve tank 25D for storing excess brake fluid is attached.

  The master cylinder 24B forms a hydraulic pressure chamber 30 between a cylinder body 28B having a cylinder hole 27 extending in the front-rear direction and having a rear end closed, and a rear end closing part of the cylinder hole 27. A piston 29 that is slidably fitted into the cylinder hole 27 and a fluid pressure chamber 30 that urges the piston 29 toward the side that increases the volume of the fluid pressure chamber 30, that is, the front. The master cylinder 24B is disposed so as to intersect with the steering handle 17 in a plan view.

  In addition, a fluid pressure path 46 communicating with the fluid pressure chamber 30 is provided at the front portion of the cylinder body 28B so as to extend below the cylinder hole 27 and in parallel with the cylinder hole 27. A connecting member 44 communicating with the rear end portion is attached to the rear end of the cylinder body 28B.

  A mounting portion 47 that protrudes upward is integrally provided at the rear portion of the cylinder body 28B in the master cylinder 24B. The mounting portion 47 and a cap 33 that sandwiches the steering handle 17 between the mounting portion 47 and the mounting portion 47. However, they are fastened to each other by a pair of bolts 34 and 35 extending in the vertical direction and sandwiching the steering handle 17 from the front and rear, and the cylinder hole 27 is disposed below the bolts 34 and 35.

  Further, the reserve tank 25D is disposed inward in the vehicle width direction of the master cylinder 24B, above the cylinder hole 27, and at the front lower side of the steering handle 17. The cylinder body 28B is integrally connected to the front portion.

  According to the fourth embodiment, the same effects as those of the first embodiment can be obtained.

  The fifth embodiment of the present invention will be described with reference to FIG. 11 and FIG. 12, but the parts corresponding to the first embodiment are only given the same reference numerals and shown in detail. The detailed explanation is omitted.

  On the inner side in the vehicle width direction of the grip 21 at the right end of the steering handle 17, a master is arranged so as to sandwich the switch case 22 between the grip 21 and intersect the steering handle 17 in plan view. A master cylinder unit 26E having a cylinder 24B and a reserve tank 25E for storing excess brake fluid is attached.

  The reserve tank 25E is integrally connected to the rear portion of the cylinder body 28B in the master cylinder 24B so as to be disposed inwardly in the vehicle width direction than the master cylinder 24B and below the steering handle 17. Is done.

  The fifth embodiment can provide the same effects as those of the first embodiment.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. Is possible.

  For example, in the above-described embodiment, the case where the present invention is applied to a motorcycle has been described. However, the present invention can be widely implemented not only for a motorcycle but also for a saddle type vehicle including a motor tricycle. .

15 ... head pipe 17 ... steering handle 21 ... grip 23 ... brake levers 24A, 24B ... master cylinders 25A, 25B, 25C, 25D, 25E ... reserve tanks 26A, 26B, 26C, 26D, 26E ... master cylinder unit 27 ... cylinder holes 28A, 28B ... cylinder bodies 32, 47 ... mounting portion 33 ... caps 34, 35 ... bolt 41 which is a fastening member ... Knuckle guard 43 ... Brake hose 44 that is a hydraulic line ... Connecting member F ... Body frame W ... Front / rear direction width of steering handle

Claims (5)

  A brake (21) is provided at the end of a steering handle (17) that is supported in a freely steerable manner on a head pipe (15) of the vehicle body frame (F), and is disposed in front of the grip (21). A master cylinder unit having a master cylinder (24A, 24B) that outputs brake fluid pressure in response to an operation of the lever (23) and a reserve tank (25A, 25B, 25C, 25D, 25E) that stores excess brake fluid In a saddle-ride type vehicle in which (26A, 26B, 26C, 26D, 26E) is attached to the steering handle (17) on the inner side in the vehicle width direction of the grip (21), the master cylinder (24A, 24B) A master cylinder arrangement structure in a saddle-ride type vehicle, which is disposed so as to intersect with the steering handle (17) in a plan view. .   A mounting portion (32, 47) provided integrally with the cylinder body (28A, 28B) of the master cylinder (24A, 24B) and protruding from the cylinder body (28A, 28B), and the steering handle (17) Caps (33) sandwiched between the mounting portions (32, 47) are fastened to each other by fastening members (34, 35) extending in the vertical direction, and are formed in the cylinder bodies (28A, 28B). The master cylinder arrangement structure in the saddle-ride type vehicle according to claim 1, wherein the cylinder hole (27) is disposed below the fastening member (34, 35).   The said master cylinder unit (26A, 26B, 26C, 26D) is arrange | positioned so that it may fit in the front-back direction width | variety (W) of the said steering handle (17), The Claim 1 or 2 characterized by the above-mentioned. Master cylinder arrangement structure in saddle riding type vehicle.   One end portion of the hydraulic pressure line (43) for guiding the brake fluid pressure from the master cylinder (24A, 24B) is at least partially connected to the rearmost fastening member (35) among the plurality of fastening members (34, 35). The saddle-ride type according to claim 2 or 3, wherein the cylinder body (28A, 28B) is connected to a rear end portion of the cylinder body (28) via a connecting member (44) arranged at a position overlapping in plan view. Master cylinder arrangement structure in a vehicle.   A knuckle guard (41) protecting the grip (21) is attached to the steering handle (17) so as to cover the brake lever (23) from the front, and at least a part of the master cylinder (24A, 24B). The master cylinder arrangement structure in the saddle-ride type vehicle according to any one of claims 1 to 4, wherein the knuckle guard (41) is formed so as to cover the vehicle in a front view.

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