JP2013123967A - Brake device for motorcycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the number of parts from increasing while preventing a large sized part from being disposed around a first brake operating element, in a brake device for a motorcycle capable of interlocking a front wheel brake with a rear wheel brake in response to operation of the first brake operation element.SOLUTION: First and second containing holes 78, 79 are formed in parallel with central axes C1, C2 in a single body 77A. The first and second containing holes 78, 79 contain a delay valve 46 and a proportional pressure reducing valve 47 which are disposed in common in the body 77A. The body 77A has an inlet port 81 for inputting the liquid pressure from a first master cylinder, a first outlet port 82 for outputting the liquid pressure from the delay valve 46, and a second outlet port 83 for outputting the liquid pressure from the proportional pressure reducing valve 47 which extend in a direction orthogonally intersecting the central axes C1, C2 of the first and second containing holes 78, 79.

Description

  The present invention provides a first master cylinder that generates hydraulic pressure acting on the front and rear wheel brakes in response to the operation of the first brake operator, and a second brake operator acting on the front wheel brake. A second master cylinder generated in response to the operation, a delay valve interposed between the first master cylinder and the front wheel brake, and between the first master cylinder and the rear wheel brake. The present invention relates to a motorcycle brake device including a proportional pressure reducing valve.

  The front wheel brake is activated by the hydraulic pressure output from the master cylinder in response to the operation of the brake lever, and the hydraulic pressure output from the other master cylinder is mechanically applied to the rear wheel wheel brake in response to the operation of the brake pedal. Patent Document 1 discloses a motorcycle brake device including an interlocking brake system that acts on a slave cylinder that exerts a sufficient driving force via a proportional pressure reducing valve and acts on a front wheel brake via a delay valve. It has been.

JP 2010-235031 A

  In the one disclosed in Patent Document 1, a master cylinder, a slave cylinder, a delay valve, and a proportional pressure reducing valve that output hydraulic pressure in response to an operation of a brake pedal are commonly arranged in the same casing and unitized. Although it is possible to reduce the size and reduce the number of parts, it is difficult to have versatility because the diameter and stroke of the master cylinder changes for each vehicle type, which may affect the yield. there were. In addition, since relatively large parts are disposed around the brake operation element such as a brake pedal, there is a possibility that the design of various parts including a design part such as a cover may be greatly affected. On the other hand, it is possible to provide versatility by arranging a delay valve or proportional pressure reducing valve separately from the master cylinder connected to the brake pedal, but the delay valve and proportional pressure reducing valve are isolated. If arranged, the number of parts will increase.

  The present invention has been made in view of such circumstances, and an increase in the number of parts while avoiding the placement of large parts around the first brake operator that can interlock the front and rear wheel brakes. It is an object of the present invention to provide a motorcycle brake device that can avoid the above-described problem.

  In order to achieve the above object, according to the present invention, the first master cylinder that generates the hydraulic pressure applied to the front and rear wheel brakes according to the operation of the first brake operator and the front wheel brakes are applied. A second master cylinder that generates hydraulic pressure in response to the operation of the second brake operator, a delay valve interposed between the first master cylinder and the front wheel brake, the first master cylinder and the rear wheel In a brake device for a motorcycle including a proportional pressure reducing valve interposed between wheel brakes, the first and second accommodation holes are parallel to the central axis in a single body independent of the first and second master cylinders. The delay valve and the proportional pressure reducing valve are disposed in common in the body so as to be accommodated in the first and second accommodation holes, and the liquid from the first master cylinder is provided. The first outlet port for outputting the hydraulic pressure from the delay valve, and the second outlet port for outputting the hydraulic pressure from the proportional pressure reducing valve are center axes of the first and second receiving holes. The first feature is that the body extends in a direction orthogonal to the first direction.

  In addition to the configuration of the first feature, the present invention also provides a liquid that branches from the single inlet port common to the delay valve and the proportional pressure reducing valve to the delay valve and the proportional pressure reducing valve to guide the hydraulic pressure. A second feature is that a pressure passage is provided in the body.

  According to the present invention, in addition to the configuration of the first feature, the body includes a first side surface that opens the first outlet port, and a first side surface that opens a second outlet port extending in parallel with the first outlet port. Has a second side facing the opposite side, and at least one plane parallel to the axis of the first and second outlet ports passes through the first and second accommodation holes. A third feature is that the position is set.

  In addition to the configuration of the first feature, the fourth feature of the present invention is that the bottomed first and second accommodation holes are provided in the body so as to open in the same direction.

  Furthermore, in the present invention, in addition to the configuration of the first feature, the body having the inlet port at a position higher than the first outlet port is disposed in front of the head pipe at the front portion of the vehicle body frame. It is the fifth feature that it is supported by.

  According to the first feature of the present invention, since the delay valve and the proportional pressure reducing valve are disposed in common in the body that is separate from the first and second master cylinders, an increase in the number of parts is avoided. Arrangement of large parts around the first master cylinder can be avoided.

  Further, according to the second feature of the present invention, the hydraulic pressure passage is provided in the body so as to branch from the single inlet port to the delay valve and the proportional pressure reducing valve to guide the hydraulic pressure. It is not necessary to provide a separate pipe, and the piping configuration can be simplified.

  According to the third aspect of the present invention, since at least one plane parallel to the axes of the first and second outlet ports extending parallel to each other passes through the first and second receiving holes, the first and second outlets The first and second accommodation holes can be arranged close to each other in a direction orthogonal to the axis of the port, and the width of the body in the direction orthogonal to the axis of the first and second outlet ports can be reduced.

  According to the fourth feature of the present invention, since the first and second accommodation holes open in the same direction, the first and second accommodation holes can be processed from the same direction, and the workability can be improved. .

  Further, according to the fifth aspect of the present invention, the body disposed in front of the head pipe and supported by the head pipe is disposed at a position higher than the first outlet port connected to the front wheel brake. Since the inlet port is provided in this way, the body can be arranged so as not to be affected by the steering, and the piping route connected to the body can be simplified to improve the piping workability. it can.

1 is a side view of a motorcycle according to a first embodiment. It is a hydraulic-pressure circuit diagram which shows the structure of a brake device. It is sectional drawing which cuts and shows a valve unit along the 3-3 line of FIG. FIG. 4 is a cross-sectional view of the body taken along line 4-4 in FIG. It is sectional drawing of the body corresponding to FIG. 4 of 2nd Embodiment. It is sectional drawing corresponding to FIG. 3 of the valve unit of 3rd Embodiment. It is a hydraulic-pressure circuit diagram which shows the structure of the brake device of 4th Embodiment. It is sectional drawing corresponding to FIG. 3 of the valve unit of 4th Embodiment. It is sectional drawing corresponding to FIG. 3 of the valve unit of 5th Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  A first embodiment of the present invention will be described with reference to FIGS. 1 to 4. First, in FIG. 1, a body frame F of this motorcycle includes a head pipe 12 that supports a front fork 11 so as to be steerable. A main frame 13 extending rearward and downward from the head pipe 12 and a pair of left and right rear frames 14 connected to the rear portion of the main frame 13 and extending rearward. A front wheel WF is provided at the lower end of the front fork 11. A bar-shaped steering handle 15 is connected to the upper portion of the front fork 11.

  Hanger plates 16 are fixed to both side surfaces of the intermediate portion of the main frame 13, and pivot plates 17 are fixed to both rear side surfaces of the main frame 13.

  Below the main frame 13, an internal combustion engine E having a cylinder axis slightly raised forward is disposed. The internal combustion engine E is supported by the hanger plates 16 ... and the pivot plates 17 ... so as to support the vehicle body. Suspended by frame F. On the pivot play 17..., The front end of the swing arm 18 is supported so as to be able to move up and down at night, and the rear wheel WR is pivotally supported on the rear end of the swing arm 18. Further, a rear cushion unit 19 is provided between the rear frame 14 and the swing arm 18 in the vehicle body frame F.

  A synthetic resin vehicle body cover 20 that covers the vehicle body frame F and a part of the internal combustion engine E is attached to the vehicle body frame F, and the vehicle body cover 20 is disposed on the left and right sides of the main frame 13. Side covers 21 ..., leg shields 22 connected to the front of both front side covers 21 ... so as to cover the rider's legs from the front, and both leg shields 22 ... so as to cover the head pipe 12 from the front. A continuous front top cover 23, a main frame top cover 24 connected to the front top cover 23 so as to cover the head pipe 12 from the rear side and the main frame 13 from above, and a lower part of the front side covers 21. A rear cover that covers the under cover 25 and the rear part of the vehicle body frame F from both sides. Constituted by the compartment cover 26.

  A riding seat 27 is disposed on the upper portion of the rear side cover 26, a front fender 28 covering the front wheel WR from above is supported by the front fork 11, and a rear fender 29 covering the rear upper portion of the rear wheel WR is connected to the rear side cover 26. Established.

  The front wheel WF can be rotated by a front wheel disc brake BF that is a front wheel brake. The front wheel disc brake BF includes a brake disc 31 that rotates together with the front wheel WF, and an outer periphery of the brake disc 31. The caliper 32 is disposed so as to straddle, and is disposed on the right side of the front wheel WF. The rotation of the rear wheel WR can be braked by a rear wheel disc brake BR which is a rear wheel brake. The rear wheel disc brake BR includes a brake disc 33 which rotates together with the rear wheel WR, and the brake disc. And a caliper 34 disposed so as to straddle the outer periphery of the disk 33, and is disposed on the right side of the rear wheel WR.

  In FIG. 2, the hydraulic pressure from the first master cylinder MR that generates hydraulic pressure in response to the operation of the brake pedal 38 as the first brake operator is applied to the front wheel disc brake BF via the delay valve 46. In addition, the hydraulic pressure from the second master cylinder MF that generates hydraulic pressure can be applied in accordance with the operation of the brake lever 39, which is the second brake operator, and the rear wheel disc brake BR is applied to the second brake cylinder 39. The hydraulic pressure from one master cylinder MR can be applied via the proportional pressure reducing valve 47.

  The caliper 34 of the rear wheel disc brake BR has a single pod 52, and the proportional pressure reducing valve 47 is connected to the pod 52 of the rear wheel disc brake BR. The caliper 32 of the front-wheel disc brake BF has a pair of pods 54 and 55, the delay valve 46 is connected to one pod 54, and the second master cylinder MF is connected to the other pod 55. Connected.

  Referring to FIG. 1, a valve unit 75A is disposed in front of the head pipe 12 at the front portion of the vehicle body frame F, and the valve unit 75A is supported by a stay 76 provided in the head pipe 12.

  In FIG. 3, in the valve unit 75A, the delay valve 46 and the proportional pressure reducing valve 47 are commonly disposed in a single body 77A formed separately from the first and second master cylinders MR and MF. The body 77A supported by the head pipe 12 via the stay 76 has a bottomed first accommodation hole 78 in which the delay valve 46 is accommodated, and the proportional pressure reducing valve 47. A bottomed second accommodation hole 79 to be accommodated is provided so as to open in opposite directions while having mutually parallel central axes C1 and C2. Thus, in the first embodiment, with the body 77A supported by the head pipe 12 via the stay 76, the first accommodation hole 78 is opened downward and the second accommodation hole 79 is opened upward. Is done.

  The body 77A has an inlet port 81 for inputting hydraulic pressure from the first master cylinder MR, and outputs hydraulic pressure from the delay valve 46 to the pod 53 of the caliper 32 in the front wheel disc brake BF. A first outlet port 82 for acting, and a second outlet port 83 for outputting the hydraulic pressure from the proportional pressure reducing valve 47 to act on the pod 52 of the caliper 33 in the rear wheel disc brake BR, The first and second receiving holes 78 and 79 are provided so as to extend in a direction orthogonal to the central axes C1 and C2. In addition, the body 77A has first and second side surfaces 84 and 85 facing opposite to each other, a first outlet port 82 is opened in the first side surface 84, and an inlet port 81 and a second outlet port 83 are formed. The inlet port 81 is disposed at a position higher than the first and second outlet ports 82, 83 so as to extend in parallel with the first outlet port 82 and to be opened in the second side surface 85.

  In FIG. 4, the positions of the first and second accommodation holes 78 and 79 are such that at least one plane PL parallel to the axis of the inlet port 81 and the first and second outlet ports 82 and 83 is the first and second accommodation holes. In this first embodiment, one of the planes PL has an axis of the inlet port 81, the first and second outlet ports 82, 83, and The positions of the first and second accommodation holes 78 and 79 are set so as to pass through the central axes C1 and C2 of the first and second accommodation holes 78 and 79.

  The delay valve 46 is disposed in the body 77A so as to be interposed between the input port 81 and the first outlet port 82, and has a first piston 87, an annular shape in the first accommodation hole 78. The first seat member 88, the first end wall member 89, and the first valve spring 90 are accommodated and disposed.

  The first accommodation hole 78 is formed with a small diameter hole portion 78a that allows one end to pass through the other end of the inlet passage 91 provided in the body 77A so that one end thereof is connected to the inlet port 81, and has a larger diameter than the small diameter hole portion 78a. Thus, the first outlet port 82 is opened at an intermediate portion of the large-diameter hole 78b. The first end wall member 89 is liquid-tightly fitted and fixed to the other end of the large-diameter hole 78 b in the first accommodation hole 78, and the other end of the first accommodation hole 78 is liquid-tight by the first plug member 93. Closed. Between the first end wall member 89 and the stepped portion 78c formed between the small diameter hole portion 78a and the large diameter hole portion 78b, an intermediate portion of the first accommodation hole 78 leads to the first outlet port 82. One output chamber 92 is formed.

  The first piston 87 is a pressure receiving portion 87a inserted into the small diameter hole portion 78a of the first receiving hole 78, and a guide that is coaxially connected to the pressure receiving portion 87a and is slidably fitted to the first end wall member 89. A shaft portion 87b and a neck portion 87c that coaxially connects the pressure receiving portion 87a and the guide shaft portion 87b are integrally formed, and a first input that leads to the inlet passage 91 is provided between the pressure receiving portion 87a and the body 77A. A chamber 94 is formed. The first sheet member 88 can contact the stepped portion 78c while elastically contacting the outer periphery of the neck portion 87c of the first piston 87 over the entire circumference. A first valve spring 90 that presses the first seat member 88 against the stepped portion 78c is contracted between the wall members 89.

  In such a delay valve 46, when a hydraulic pressure acts on the first input chamber 94 from the inlet port 81 through the inlet passage 91, the first piston 87 causes the first seat member 88 to move from the step 78c by the pressure receiving portion 87a. When the first seat member 88 is separated from the step 78c against the spring force of the first valve spring 90, the hydraulic pressure from the first master cylinder MR is changed to the first output chamber. 92, and the hydraulic pressure output from the first outlet port 82 is delayed with respect to the operation of the brake pedal 38.

  The proportional pressure reducing valve 47 is disposed in the body 77A so as to be interposed between the inlet port 81 and the second outlet port 83, and the second piston 97, An annular second seat member 98, a second end wall member 99, and a second valve spring 100 are accommodated and disposed.

  The second receiving hole 79 is formed with a small diameter hole 79a having one end communicating with the second outlet port 83 and a diameter larger than that of the small diameter hole 79a, and one end is coaxially connected to the other end of the small diameter hole 79a. The inlet port 81 is opened at an intermediate portion of the large-diameter hole 79b. On the other hand, the inlet passage 91 that guides the hydraulic pressure from the first master cylinder MR to the delay valve 46 side is coaxial with the inlet port 81 so as to sandwich the second accommodation hole 79 between the inlet port 81 and the body 77A. A hydraulic pressure passage 101 that branches from the single inlet port 81 common to the delay valve 46 and the proportional pressure reducing valve 47 to the delay valve 46 and the proportional pressure reducing valve 47 and guides the hydraulic pressure. The second housing hole 79 and the inlet passage 91 are provided in the body 77A.

  The second end wall member 99 is liquid-tightly fitted and fixed to the other end of the large-diameter hole 79 b in the second accommodation hole 79, and the other end of the second accommodation hole 79 is liquid-tight by the second plug member 103. Closed. Between the second end wall member 99 and the stepped portion 79c formed between the small diameter hole portion 79a and the large diameter hole portion 79b, a second input chamber communicating with the inlet port 81 is provided in the second accommodation hole 79. 102 is formed.

  The second sheet member 98 is formed so that the inner peripheral edge protrudes inwardly from the stepped portion 79c, and elastically contacts the entire inner periphery of the large diameter hole 79b. It is inserted into the end portion of 79b on the step 79c side.

  The second piston 97 has a small-diameter piston portion 97a that is movably inserted into the small-diameter hole portion 79a, a large-diameter piston portion 97b that is larger in diameter than the small-diameter piston portion 97a, and a smaller diameter than those piston portions 97a and 97b. Thus, a connecting shaft portion 97c that coaxially connects the piston portions 97a and 97b is integrally connected.

  The small-diameter piston portion 97a has a second output chamber 104 communicating with the second outlet port 83 formed between the inner surface of the small-diameter hole portion 79a and is inserted into the small-diameter hole portion 79a so as to be movable in the axial direction. An annular valve portion 105 that can come into contact with the annular plate portion 98a of the second sheet member 98 from the small diameter hole portion 79a side is provided on the outer periphery of the end portion of the portion 97a on the second sheet member 98 side.

  The large-diameter piston portion 97b is slidably fitted to the second end wall member 99. Also, a flange 97d projecting radially outward is provided at the end of the large-diameter piston 97b on the side of the connecting shaft 97c, and a second valve spring is provided between the second end wall member 99 and the flange 97d. 100 is contracted. The flange 97d is in contact with the second sheet member 98. The second sheet member 98 in the state in which the flange 97d is in contact with the step 79c, and the valve 105 is the second. The second sheet member 98 allows the brake fluid to flow between the second input chamber 102 and the second output chamber 104 without being in contact with the sheet member 98.

  In such a proportional pressure reducing valve 47, the hydraulic pressure introduced from the inlet port 81 into the second input chamber 102 gives the second piston 97 a hydraulic pressure opposite to the spring force of the second valve spring 100, and the inlet port In a state where the hydraulic pressure input from 81 is low, the second piston 97 is moved to a position where the valve portion 105 is separated from the second seat member 98 by the spring force of the second valve spring 100, and the second input chamber 102 is moved. Is communicated with the second output chamber 104, that is, the second outlet port 83. However, when the hydraulic pressure input from the inlet port 81 increases, the second piston 97 moves so as to abut the valve portion 105 against the second seat member 98 against the spring force of the second valve spring 100, and is proportional. The pressure reducing valve 47 proportionally reduces the hydraulic pressure from the inlet port 81 and acts on the rear wheel disc brake BR.

  Next, the operation of the first embodiment will be described. The first and second receiving holes 78 and 79 are formed in the central axis C1 and the single body 77A independent of the first and second master cylinders MR and MF. C2 is provided in parallel, and the delay valve 46 and the proportional pressure reducing valve 47 are disposed in common to the body 77A so as to be accommodated in the first and second accommodation holes 78 and 79, and are connected to the first master cylinder MR. An inlet port 81 for inputting the hydraulic pressure of the first output port, a first outlet port 82 for outputting the hydraulic pressure from the delay valve 46, and a second outlet port 83 for outputting the hydraulic pressure from the proportional pressure reducing valve 47, Since the second housing holes 78 and 79 extend in the direction perpendicular to the central axes C1 and C2 and are provided on the body 77A, large parts are arranged around the first master cylinder MR while avoiding an increase in the number of parts. Is the possible can be avoided.

  A fluid pressure passage 101 is provided in the body 77A for branching the fluid pressure from the single inlet port 81 common to the delay valve 46 and the proportional pressure reducing valve 47 to the delay valve 46 and the proportional pressure reducing valve 47. Therefore, it is not necessary to separately provide a branch path outside the body 77A, and the piping configuration can be simplified.

  Further, the body 77A opens the first side face 84 that opens the first outlet port 82, and the second outlet port 83 and the inlet port 81 that extend in parallel with the first outlet port 82, and is opposite to the first side face 84. A first plane PL (in this embodiment, the first and second outlet ports 82 and 83) that are parallel to the axis of the inlet port 81 and the first and second outlet ports 82 and 83. Since the positions of the first and second accommodation holes 78 and 79 are set so that the plane PL) passing through the axis of the first and second accommodation holes 78 and 79 passes through the central axis of the first and second accommodation holes 78 and 79, the inlet port 81 and the first The central axes of the first and second receiving holes 78 and 79 are arranged at the same position in a direction orthogonal to the axis of the second outlet ports 82 and 83, and the inlet port 81, the first and second outlet ports 82 and 83 are arranged. Orthogonal to the axis That it is possible to reduce the width of the body 77A in the direction.

  Further, the body 77A having the inlet port 81 at a position higher than the first outlet port 82 is supported by the head pipe 12 while being disposed in front of the head pipe 12 at the front portion of the vehicle body frame F. The body 77A can be arranged so as not to be easily affected, and the piping workability can be improved by simplifying the piping path connected to the body 77A.

  FIG. 5 shows a second embodiment of the present invention. A valve unit 75A includes a delay valve 46 and a proportional pressure reducing valve 47, and a body 77B in which the delay valve 46 and the proportional pressure reducing valve 47 are disposed in common. The first and second receiving holes 78 and 79 provided in the body 77B are arranged so that the first plane PL parallel to the axis of the inlet port 81 and the first and second outlet ports 82 and 83 is a first plane PL. And it sets so that the 2nd accommodation holes 78 and 79 may pass.

  Also in the second embodiment, the width of the body 77B in the direction orthogonal to the axis of the inlet port 81, the first and second outlet ports 82 and 83 can be reduced.

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

  The valve unit 75C is configured by arranging the delay valve 46 and the proportional pressure reducing valve 47 in common in a single body 77C formed separately from the first and second master cylinders MR and MF. In the body 77C, a bottomed first housing hole 78 in which the delay valve 46 is housed and a bottomed second housing hole 79 in which the proportional pressure reducing valve 47 is housed are parallel to each other. It is provided so as to open in the same direction while having the axes C1 and C2. Thus, in the third embodiment, the first and second accommodation holes 78 and 79 are both provided in the body 77C so as to open upward.

  The body 77C has an inlet port 81 for inputting the hydraulic pressure from the first master cylinder MR, and a first for outputting the hydraulic pressure from the delay valve 46 to act on the front wheel disc brake BF. The outlet port 82 and the second outlet port 83 for outputting the hydraulic pressure from the proportional pressure reducing valve 47 to act on the rear wheel disc brake BR are the central axes of the first and second receiving holes 78 and 79. It is provided so as to extend in a direction orthogonal to C1 and C2. In addition, the body 77C has first and second side surfaces 107 and 108 facing opposite sides, the first outlet port 82 is opened in the first side surface 107, and the inlet port 81 and the second outlet port 83 are formed. The second side surface 108 is opened so as to extend in parallel with the first outlet port 82.

  The body 77C extends in parallel with the first and second accommodation holes 78, 79 so that the upper end opening is liquid-tightly closed by the ball 109, and is disposed between the first and second accommodation holes 78, 79. A first passage hole 110 having a first end coaxially communicating with the inlet port 81 and crossing the second receiving hole 79, and a second passage hole 111 having the other end communicated with an intermediate portion of the first passage hole 110; One end opened on one side surface 107 is liquid-tightly closed with a ball 114 and extends horizontally below the first accommodation hole 79, and the other end is connected to the lower end of the first passage hole 110. A passage hole 112 and a fourth passage hole 113 that communicates an intermediate portion of the third passage hole 112 with the first input chamber 94 of the delay valve 46 are provided, and the first to fourth passage holes 110 to 113 and the fourth passage hole 113 are provided. 2 The receiving hole 79 is provided with the delay valve 46. Preliminary the proportional pressure reducing valve 47 to the common single said inlet port 81 is branched to the delay valve 46 and the proportional pressure reducing valve 47 constituting the hydraulic pressure passage 115 for guiding hydraulic pressure.

  According to the third embodiment, the same effects as those of the first and second embodiments can be obtained, and the first housing hole 78 with a bottom in which the delay valve 46 is housed is proportional to the third embodiment. Since the bottomed second accommodation hole 79 in which the pressure reducing valve 47 is accommodated is provided in the body 77C so as to open in the same direction while having the central axes C1 and C2 parallel to each other, the first and first 2 The processing of the accommodation holes 78 and 79 can be performed from the same direction, and workability can be improved.

  A fourth embodiment of the present invention will be described with reference to FIG. 7 and FIG. 8, but the parts corresponding to the first to third embodiments are only shown with the same reference numerals. Detailed description will be omitted.

  First, in FIG. 7, the first and second master cylinders MR are used to prevent the front wheels WF (see the first embodiment) and the rear wheels WR (see the first embodiment) from being locked during braking. , MF output hydraulic pressure is regulated by the hydraulic pressure modulator 40, and the output pressure of the first master cylinder MR is guided to the first input port 41 of the hydraulic pressure modulator 40, and the second master cylinder MF. Is output to the second input port 42 of the hydraulic pressure modulator 40. The hydraulic pressure modulator 40 has first, second and third output ports 43, 44 and 45. The first output port 43 is connected to the pod 54 of the caliper 32 in the front wheel disc brake BF via a delay valve 46. The second output port 44 is connected to the pod 52 of the caliper 34 in the rear wheel disc brake BR via a proportional pressure reducing valve 47, and the third output port 45 is the pod 55 of the caliper 32 in the front wheel disc brake BF. Connected to.

  The hydraulic pressure modulator 40 includes a first normally open solenoid valve 59 connected to the first input port 41, a first check valve 60 connected in parallel to the first normally open solenoid valve 59, and a first reservoir. 61, a first normally closed solenoid valve 62 provided between the first normally open solenoid valve 59 and the first reservoir 61, and the first normally open solenoid valve 59 are connected to the first input port 41 in parallel. A second normally open solenoid valve 63, a second check valve 64 connected in parallel to the second normally open solenoid valve 63, a second normally open solenoid valve 63 and a second reservoir provided between the first reservoir 61. A normally closed solenoid valve 65, a third normally open solenoid valve 66 connected to the second input port 42, a third check valve 67 connected in parallel to the third normally open solenoid valve 66, and a second A third normally closed type electric valve provided between the reservoir 68 and the third normally open type electromagnetic valve 66 and the second reservoir 68. A valve 69, a first pump 70 that pumps up the brake fluid in the first reservoir 61 and returns it to the first input port 41 side, and a second pump that pumps up the brake fluid in the second reservoir 68 and returns it to the second input port 42 side. A pump 71 and an electric motor 72 that drives the first and second pumps 70 and 71 in common are provided, and the connection 73 of the first normally open solenoid valve 59 and the first normally closed solenoid valve 62 has a first output. The connection portion 74 of the second normally open solenoid valve 63 and the second normally closed solenoid valve 65 is communicated with the second output port 44 and communicates with the port 43, and the third normally open solenoid valve 66 and the third normally close A connecting portion 75 of the electromagnetic valve 69 communicates with the third output port 45.

  According to such a hydraulic pressure modulator 40, the hydraulic pressure of the first master cylinder MR is caused to act on the pod 52 of the caliper 34 in the rear wheel disc brake BR via the proportional pressure reducing valve 47 and the caliper in the front wheel disc brake BF. 32, the rear wheel WR and the front wheel WF are braked by acting on the pod 54 via the delay valve 46, and the hydraulic pressure of the second master cylinder MR is applied to the pod 55 of the caliper 32 in the front wheel disc brake BF. The front wheel WF can be braked and the opening and closing of the first to third normally open solenoid valves 59, 63, 66 and the first to third normally closed solenoid valves 62, 65, 69 are controlled during braking. By adjusting the hydraulic pressure acting on the rear wheel disc brake BR and the front wheel disc brake BF, the wheels fall into a locked state. It is possible to adjust the braking force of the rear wheel WR and the front wheel WF so as to avoid.

  In FIG. 8, the delay valve 46 and the proportional pressure reducing valve 47 are disposed in common in a single body 77D formed separately from the first and second master cylinders MR and MF, and a valve unit 75D is provided. The body 77D has a bottomed first accommodation hole 78 in which the delay valve 46 is accommodated and a bottomed second accommodation hole 79 in which the proportional pressure reducing valve 47 is accommodated. These are provided so as to open in opposite directions while having central axes C1 and C2 parallel to each other.

  Further, the body 77D outputs a hydraulic pressure from the first inlet port 115 for inputting the hydraulic pressure from the first output port 43 of the hydraulic pressure modulator 40 and the delay valve 46 to output the front-wheel disc brake BF. A first outlet port 117 for causing the fluid pressure modulator 40 to act, a second inlet port 116 for inputting fluid pressure from the second output port 44 of the fluid pressure modulator 40, and a fluid pressure from the proportional pressure reducing valve 47. A second outlet port 118 for acting on the rear wheel disc brake BR is provided so as to extend in a direction orthogonal to the central axes C1 and C2 of the first and second housing holes 78 and 79. In addition, the body 77D has first and second side surfaces 119 and 120 that face opposite sides, and the first inlet port 115 and the first outlet port 117 connect the first inlet port 115 to the first outlet port 117. The second inlet port 116 and the second outlet port 118 extend in parallel with the first inlet port 115 and the first outlet port 117, and are disposed in the first side surface 119. Is disposed above the second outlet port 118 and is opened in the second side surface 120.

  According to the fourth embodiment, the same effect as that of the first embodiment can be obtained.

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

  A delay unit 46 and a proportional pressure reducing valve 47 are commonly disposed in a single body 77E formed separately from the first and second master cylinders MR and MF, thereby forming a valve unit 75E. The body 77E has a bottomed first accommodation hole 78 in which the delay valve 46 is accommodated, and a bottomed second accommodation hole 79 in which the proportional pressure reducing valve 47 is accommodated. It is provided so as to open upward while having the axes C1 and C2.

  The body 77E outputs a hydraulic pressure from the first inlet port 115 for inputting the hydraulic pressure from the first output port 43 of the hydraulic pressure modulator 40 and the delay valve 46 to the front wheel disc brake BF. A first outlet port 117 for acting, a second inlet port 116 for inputting hydraulic pressure from the second output port 44 of the hydraulic pressure modulator 40, and a hydraulic pressure from the proportional pressure reducing valve 47. The second outlet port 118 for acting on the rear wheel disc brake BR is provided so as to extend in a direction orthogonal to the central axes C1 and C2 of the first and second housing holes 78 and 79. In addition, the body 77E has first and second side surfaces 121 and 122 that face opposite sides, and the first inlet port 115 and the first outlet port 117 connect the first inlet port 115 to the first outlet port 117. The second inlet port 116 and the second outlet port 118 extend in parallel with the first inlet port 115 and the first outlet port 117, and are opened in the first side surface 121 so as to be disposed below the second side port 121. The second side surface 120 is opened so that 116 is disposed above the second outlet port 118.

  According to the fifth embodiment, the same effects as those of the third embodiment can be obtained.

  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.

12 ... head pipe 38 ... brake pedal 39 as first brake operator ... brake lever 46 as second brake operator ... delay valve 47 ... proportional pressure reducing valves 77A, 77B, 77C , 77D, 77E ... body 78 ... first accommodation hole 79 ... second accommodation hole 81, 115, 116 ... inlet port 82, 117 ... first outlet port 83, 118 ... 2nd outlet port 84,119,121 ... 1st side surface 85,120,122 ... 2nd side surface 101,115 ... hydraulic pressure passage BF ... front wheel disc brake BR which is a wheel brake for front wheels ... rear wheel disc brakes C1 and C2 that are wheel brakes for rear wheels ... center axis F ... body frame MF ... second master cylinder MR ... first master cylinder PL ... plane

Claims (5)

  The first master cylinder (MR) that generates hydraulic pressure acting on the front and rear wheel brakes (BF, BR) according to the operation of the first brake operator (38) and the front wheel brake (BF). A hydraulic pressure is applied between the second master cylinder (MF), which generates the hydraulic pressure in response to the operation of the second brake operator (39), and between the first master cylinder (MR) and the front wheel brake (BF). A brake device for a motorcycle comprising: a delay valve (46); and a proportional pressure reducing valve (47) interposed between the first master cylinder (MR) and the rear wheel brake (BR). A single body (77A, 77B, 77C, 77D, 77E) independent of the second master cylinder (MR, MF) has a central axis (C1, C2) formed by the first and second receiving holes (78, 79). The delay valve (46) and the proportional pressure reducing valve (47) are provided in a row, and are common to the bodies (77A to 77E) so as to be accommodated in the first and second accommodation holes (78, 79). An inlet port (81, 115, 116) for inputting hydraulic pressure from the first master cylinder (MR), and a first outlet port (82, 82) for outputting hydraulic pressure from the delay valve (46). 117) The second outlet ports (83, 118) for outputting the hydraulic pressure from the proportional pressure reducing valve (47) are orthogonal to the central axes (C1, C2) of the first and second accommodation holes (78, 79). A brake device for a motorcycle, characterized in that the brake device is provided on the body (77A to 77E) so as to extend in a direction in which the motorcycle is operated.   A fluid that branches from the single inlet port (81) common to the delay valve (46) and the proportional pressure reducing valve (47) to the delay valve (46) and the proportional pressure reducing valve (47) to guide the hydraulic pressure The brake device for a motorcycle according to claim 1, wherein a pressure passage (101, 115) is provided in the body (77A, 77C).   The body (77A to 77E) has a first side surface (84, 119, 121) for opening the first outlet port (82, 117), and a second outlet port extending in parallel with the first outlet port (82, 117). (83, 118) and a second side surface (85, 120, 122) facing the opposite side of the first side surface (84, 119, 121), and the first and second outlet ports (82, 117; 83, 118) positions of the first and second receiving holes (78, 79) so that at least one plane (PL) parallel to the axis of the first and second receiving holes (78, 79) passes through. The motorcycle brake device according to claim 1, wherein: is set.   The brake for a motorcycle according to claim 1, wherein the first and second receiving holes (78, 79) having a bottom are provided in the body (77C, 77E) so as to open in the same direction. apparatus.   The body (77A, 77D) having the inlet port (81, 116) at a position higher than the first outlet port (82, 117) is in front of the head pipe (12) at the front of the vehicle body frame (F). The motorcycle brake device according to claim 1, wherein the brake device is supported by the head pipe (12) while being arranged.

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