Bicycle control device

Abstract

Bicycle control device (12; 112; 212; 312; 412; 512; 612) attachable to a bicycle handlebar (13) and capable of controlling a braking device (18) and a shifting device (15), the bicycle control device (12; 112; 212; 312; 412; 512; 612) comprising: a housing member (20) comprising a gripping part (20b) extending in a longitudinal direction between a first end (20c) and a second end (20d), and a fastening part (20a) provided on one side at the first end (20c) of the gripping part (20b) and attachable to a handlebar; a control lever member (22; 122; 522; 622) capable of pivoting relative to the housing member (20); a switch operating mechanism (23; 123) provided on the housing member (20); a hydraulic pressure-generating part (21) for controlling the braking device (18), the hydraulic pressure-generating part (21) comprising a cylinder (30) provided on the housing member (20) and arranged closer to a second end (20d) side of the gripping part (20b) than the switching operating mechanism (23; 123), a piston (31, 731) displaceable within the cylinder (30) and operated by means of the control lever member (22; 122; 522; 622); and a reservoir (33) fluidly coupled to the cylinder (30), the reservoir (33) being provided in the gripping part (22b) and spaced from and aligned with the cylinder (30) in a left-right direction intersecting the longitudinal direction.

Description

This application claims priority to Japanese Patent Application JP 3 182 210 U having application No. 2012-007809 filed on Dec. 26, 2012. The entire disclosure of Japanese Patent Application Application Serial No. 2012-007809 is hereby incorporated by reference.This invention relates generally to a bicycle control device. More particularly, the present invention relates to a bicycle control device that can be mounted on the handlebar of a bicycle and that can control a brake device and a shift device.Bicycle control devices are conventionally known which can be mounted on a bicycle handlebar for controlling both a brake device and a shift device (see, for example, European Patent Application EP 2 308 750 A1 with publication number 2308750). This prior art bicycle control device is provided with a housing member having a fastening part attachable to a handlebar and a gripping part graspable by a rider's hand, a control lever member having a first operating lever and a second operating lever, and a shift operating mechanism provided on a side at a first end (the handlebar side) of the gripping part. In the bicycle control device as disclosed in European Patent Application Publication No. 2,308,750 A1, the shift operating mechanism is provided at the first end of the grip part extending in the longitudinal direction, which allows a more compact control lever member. Further bicycle control devices are known, for example, from US 2012 / 0 160 625 A1 and US 2010 / 0 199 798 A1.Bicycle control devices are also known from the prior art which perform a braking operation on a bicycle by means of hydraulic pressure (see, for example, patent TW M 386 235 U). The bicycle control device is typically provided on the handlebar. This bicycle control device includes a hydraulic fluid pressure generator provided on the gripping part. The distal end of a rod part of the hydraulic fluid pressure generator is pivotally coupled to a control lever member. The control device of the patent TW M 386 235 U is also provided with a piston position adjusting mechanism for adjusting an initial position of the piston. The piston position adjusting mechanism includes a pivoting link that engages with the piston and a screw member for pivoting the link. The pivot angle of the joint member is changed by screwing in and unscrewing the screw. By this changing of the swing angle, the position at which the piston is regulated by the link is changed along the axial direction of the cylinder.In general, it is possible that the hydraulic fluid pressure generator of patent TW M 386 235 U including a piston position adjusting mechanism for adjusting an initial position of the piston could be applied in the case of the bicycle control device of European patent application EP 2 308 750 A1 having publication number 2308750 capable of controlling a brake device and a shift device to achieve a configuration of a bicycle control device for performing shift operations and brake operations in which the initial position of the piston is adjustable. However, in the bicycle control device of European Patent Application EP 2 308 750 A1 having publication number 2308750, the shift operating mechanism is disposed within a gripping portion of the housing member. For this reason, if a hydraulic fluid pressure generator with the initial position adjusting mechanism of the piston of the TW M 386 235 U patent were provided in the gripping portion, the gripping portion would become larger in size, making it difficult for a cyclist to grip the gripping part. When the gripping part of the housing member is difficult to grip, it becomes difficult for the cyclist to operate the control lever member.An object of the present invention is to provide a bicycle control device that facilitates operation of the control lever member by the rider to perform shift operations and brake operations, and that includes a shift operating mechanism in the gripping part even when a hydraulic fluid pressure generator having a piston position adjusting mechanism is provided inside the gripping part.In view of the known related art and according to a first aspect of the present invention, there is provided a bicycle control device that is attachable to a bicycle handlebar and capable of controlling a brake device and a shift device. The bicycle control device includes a housing member, a control lever member, a shift operating mechanism, and a hydraulic fluid pressure generator. The housing includes a fixing part for fixing to a handlebar and a gripping part extending in a longitudinal direction between a first end and a second end of the gripping part. The attachment part is provided at the first end of the gripping part. The control lever member is pivotally provided with respect to the housing member. The shift operating mechanism is provided in the housing member. The shift operating mechanism is configured to be coupled to a shift device by a control cable. The hydraulic fluid pressure generator comprises a cylinder, a piston movably disposed within the cylinder due to moving the control lever member to generate fluid pressure for controlling a brake device, and a piston position adjusting mechanism adjustably coupled to the piston with respect to the cylinder for changing an initial position of the piston with respect to the cylinder.In the case of this bicycle control device, the shift device is / is operated via the control cable when the gripping part of the housing member is / is gripped and the control lever member is / is operated, whereby the shift operating mechanism is / is operated. The brake device is / is controlled by hydraulic pressure generated upon displacement of the piston of the hydraulic fluid pressure generator by operation of the control lever member. The initial position of the piston may be adjusted by the piston position adjustment mechanism. Here, the cylinder of the hydraulic fluid pressure generator is provided on the housing member and arranged toward a side at the second end with respect to the shift operation mechanism. Since the hydraulic fluid pressure generator is disposed on the second end side with respect to the shift operation mechanism in this manner, the shift operation mechanism and the hydraulic fluid pressure generator including the piston position adjustment mechanism do not overlap in the longitudinal direction. In this way, the first end side of the gripping part can be narrower, making it easy for the cyclist to grip the gripping part even if the hydraulic fluid pressure generator having the piston position adjusting mechanism is provided on the gripping part. It is thus easier for the cyclist to operate the control lever member.Preferably, the bicycle control device is configured such that the hydraulic fluid pressure generator includes a rod part coupled to the piston and operated / operated by the control lever member. The control lever member includes a first operating lever and a cam member for pivoting about a first axis along with pivoting of the first operating lever and for operating the rod part. The piston position adjustment mechanism includes a first adjuster coupled to the cam member for adjusting the initial position of the cam member. Accordingly, the initial position of the piston can be adjusted by changing the initial position of the cam member.Preferably, the bicycle control device is configured such that the first adjuster includes a first adjustment bolt disposed along a second axis intersecting the first axis. Accordingly, by arranging the first adjustment bolt along the second axis, the control lever member and the cam member can be easily coupled. Moreover, the phase of the cam member and the control lever member in the pivotal direction can be changed by rotating the first adjusting bolt. Thereby, an arrangement for coupling the cam member to the control lever member and an arrangement for modifying the initial position of the cam member using a single adjusting bolt can be realized.Preferably, the bicycle control device is configured such that the first adjuster includes a second adjustment bolt provided in the vicinity of the first axis. Because the adjusting pin is provided in the vicinity of the first axis of one of the control lever member and the cam member and contacts the other, the phase of the cam member in the swing direction can be changed by advancing and retracting the second adjusting pin by rotating it. In this way, an arrangement for pivoting the cam member by pivoting the control lever member and an arrangement for modifying the initial position of the cam member can be realized using a single adjusting bolt.Preferably, the bicycle control device is configured such that the first adjuster includes a worm gear bolt provided on one of the first operating lever part and the cam member and configured to engage with the other of the first operating lever part and the cam member. Accordingly, the phase of the cam member and the control lever member in the pivotal direction can be changed by rotating the worm gear bolt. In this way, an arrangement for pivoting the cam member by pivoting the control lever member and an arrangement for modifying the initial position of the cam member can be realized using a single adjusting bolt.The first adjusting member may independently have the first adjusting bolt, the second adjusting bolt or the worm gear bolt, respectively, and it is also possible that it has a combination of a plurality of the corresponding bolts, in which case fine adjustments would be possible by a respective adjustment.Preferably, the bicycle control device is configured such that the piston position adjusting mechanism includes a second adjuster for coupling the control lever member and the piston, the second adjuster configured to adjust a position of the control lever member with respect to the piston. Accordingly, the initial position of the piston can be adjusted regardless of the position of the control lever member.Preferably, the bicycle control device is configured such that the hydraulic fluid pressure generator includes a rod part coupled to the piston and operated by the control lever member. The second adjusting member has an adjusting screw that adjusts an effective length of the rod part. Accordingly, the initial position of the piston can be varied by adjusting the length of the rod part by rotating the adjustment screw. In this way, the initial position of the piston can be adjusted by a simple arrangement involving the adjustment screw.A bicycle control device according to another aspect of the present invention is a bicycle control device that is attachable to a bicycle handlebar and is capable of controlling a brake device and a shifting device. The bicycle control device includes a housing member, a control lever member, a shift operating mechanism, a hydraulic fluid pressure generator, and a control lever position adjusting mechanism. The housing member includes a fixing part for fixing to a handlebar and a gripping part extending longitudinally between a first end and a second end of the gripping part. The attachment part is provided at the first end of the gripping part. The control lever member is pivotally provided with respect to the housing member. The shift operating mechanism is provided in the housing member. The shift operating mechanism is configured to be coupled to a shift device by a control cable. The hydraulic fluid pressure generator comprises a cylinder provided in the housing member, a piston movably disposed within the cylinder due to moving the control lever member to generate a fluid pressure for controlling a brake device. The cylinder is disposed in the housing member at a position closer to the second end of the grip part than the shift operation mechanism. The control lever adjustment mechanism adjustably couples to the control lever member with respect to the housing member to change an initial position of the control lever member with respect to the housing member.In such an embodiment, the shift device is / is operated via the control cable by gripping the gripping part of the housing member and operating the control lever member to operate the shift operating mechanism. The brake device is / is controlled by hydraulic pressure generated / is controlled by shifting the piston of the hydraulic pressure generating part by operating the control lever member. Moreover, the initial position of the control lever member can be adjusted by the control lever position adjusting mechanism. Here, the cylinder of the hydraulic pressure generating part is provided on the housing member and disposed closer to the second end side with respect to the shift operation mechanism. In this way, because the hydraulic pressurizing part is disposed closer to the second end compared to the shift operating mechanism, the hydraulic pressurizing part and the shift operating mechanism do not overlap in the longitudinal direction despite the provision of the control lever position adjusting mechanism. The side at the first end of the gripping part can be narrower in this way, and moreover the initial position (gripping width) of the control lever is adjustable, making it easy for the cyclist to grip the gripping part even for one with comparatively small hands, and making it easier for the cyclist to operate the control lever member.Preferably, the bicycle control device is configured such that the control lever position adjustment mechanism includes a third adjustment member coupled to the control lever member for adjusting the initial position of the control lever member. Accordingly, the initial position (grip width) of the control lever is adjustable by adjusting the initial pivotal position of the control lever, making adjustment easy.Preferably, the bicycle control device is configured such that the third adjuster includes a third adjustment bolt disposed along a second axis intersecting the first axis. Accordingly, adjustment is possible by the third adjustment bolt provided along the second axis, which makes adjustment from the external environment easy.Preferably, the bicycle control device is configured such that the third adjusting member includes a fourth adjusting bolt provided in the vicinity of the first axis. Accordingly, by providing the fourth adjusting bolt in the vicinity of the first axis, adjustment is easier, and the apparatus itself can be made more compact.Preferably, the bicycle control device is configured such that the third adjuster includes a worm gear pin provided on the control lever member. Accordingly, the adjuster can be made more compact and hence the apparatus itself can be made more compact.The third adjusting member may independently comprise the third adjusting bolt, the fourth adjusting bolt or the worm gear bolt, respectively, and it is also possible that it comprises a combination of a plurality of the respective bolts, in which case fine adjustments would be possible.Preferably, the bicycle control device is configured such that the hydraulic fluid pressure generator has a rod part coupled to the piston and operated / operated by the control lever member. The control lever member comprises a cam member for pivoting about a first axis in connection with pivoting of the control lever member, which actuates the rod part. The bicycle control device further includes a fourth adjuster coupled to the cam member and the control lever member for adjusting the initial position of the control lever member and an initial position of the cam member. Accordingly, it is possible to simultaneously adjust the initial position (grip width) of the control lever and the initial position of the piston because the control lever is also coupled to the cam member.Preferably, the bicycle control device is configured such that the fourth adjuster includes a fifth adjustment bolt disposed along a second axis intersecting the first axis. Accordingly, adjustment by means of the fifth adjustment bolt provided along the second axis is possible, which makes it easy to adjust both the initial position (grip width) of the control lever and the initial position of the piston from the external environment.Preferably, the bicycle control device is configured such that the fourth adjuster includes a sixth adjustment bolt in the vicinity of the first axis. Accordingly, by providing the sixth adjusting bolt in the vicinity of the first axis, adjustment is easier and the device itself can be made more compact.Preferably, the bicycle control device is configured such that the fourth adjuster includes a worm gear pin provided on one of the control lever member and the cam member and engaged with the other of the control lever member and the cam member. Accordingly, the adjuster can be made more compact and hence the apparatus itself can be made more compact.The fourth adjusting member may independently comprise the fifth adjusting bolt, the sixth adjusting bolt or the worm gear bolt, respectively, and it is also possible that it comprises a combination of a plurality of the respective bolts, in which case finer adjustments would be possible.According to the present invention, the hydraulic fluid pressure generator is disposed on the second end side with respect to the shift operation mechanism, and therefore the shift operation mechanism and the hydraulic fluid pressure generator including the piston position adjusting mechanism do not overlap in the longitudinal direction. In this way, the first end side of the gripping part can be narrower, making it easier for the cyclist to grip the gripping part even if the hydraulic fluid pressure generator having the piston position adjusting mechanism is provided on the gripping part. It is therefore easier for the cyclist to operate the control lever member.Also, other objects, features, aspects and advantages of the disclosed bicycle control device will become apparent to those skilled in the art from the following detailed description, which, when taken in conjunction with the appended drawings, discloses several embodiments of the bicycle control device.Referring to the attached drawings which form a part of this original disclosure: FIG. 1 is a perspective view of a bicycle control device mounted on a portion of a race bar according to a first embodiment, and a side elevational view of a front portion of a bicycle equipped with a brake device controlled by the bicycle control device, and a schematic view of a rear derailleur controlled by the bicycle control device; FIG. 2 is a partial cross-sectional view of a bicycle control device according to the first embodiment, the section being taken along a longitudinal center of the reservoir part of the bicycle control device; FIG. 3 is a cross-sectional view of a bicycle control device according to the first embodiment, the cross-section being taken along a longitudinal center of the cylinder part of the bicycle control device with its cover removed, with selected parts shown in elevation; FIG. 4 is a cross-sectional view of a bicycle control device similar to FIG. 3 with the bicycle control device being / is operated to perform a braking operation of the bicycle brake device; FIG. 5 is a partial longitudinal cross-sectional view of the bicycle control device according to the first embodiment, the cross-section taken along a longitudinal center of the housing member of the bicycle control device, illustrating an upper portion of the control lever member and the shift operating mechanism. FIG. 6 is a partial perspective view of an end part of the gripping part of the housing member of the bicycle control device according to the first embodiment. FIG. 7 is a side elevational view of the control lever member and the shift operating mechanism of the bicycle control device as shown in FIG. 4, with a portion of the control lever member shown in cross section for purposes of illustration. FIG. 8 is a front elevational view of the first operating lever of the bicycle control device for operating the bicycle brake device and the shift operating mechanism, the first operating lever being shown in solid lines for illustrating the rest position and broken lines for illustrating an operated position for operating the shift operating device; FIG. 9 is a front elevational view of the second operating lever of the bicycle control device for operating the shift operating mechanism, the first operating lever being shown in solid lines for illustrating the rest position and shown in broken lines for illustrating an operated position for operating the shift operating mechanism; FIG. 10 is a front elevational view of the bicycle operating mechanism of the bicycle control device; FIG. 11 is a cross-sectional view of a bicycle control device according to a first modification of a bicycle control device as illustrated in FIG. 3, the cross-section taken along a longitudinal center of the cylinder part of the bicycle control device, and selected parts are shown in elevation; FIG. 12 is a cross-sectional view of a bicycle control device according to a second modification of the bicycle control device as illustrated in FIG. 3, the cross-section being taken along a longitudinal center of the cylinder part of the bicycle control device, and selected parts being shown in elevation; FIG. 13 is a cross-sectional view of a bicycle control device according to a third modification of the bicycle control device as illustrated in FIG. 3, the cross-section being taken along a longitudinal center of the cylinder part of the bicycle control device, and selected parts being shown in elevation; FIG. 14 is a cross-sectional view of a bicycle control device according to a fourth modification of the bicycle control device as illustrated in FIG. 3, the cross-section being taken along a longitudinal center of the cylinder part of the bicycle control device, and selected parts being shown in elevation; FIG. 15 is a cross-sectional view of a bicycle control device according to a fifth modification of the bicycle control device as illustrated in FIG. 3, the cross-section being taken along a longitudinal center of the cylinder part of the bicycle control device, and selected parts being shown in elevation; FIG. 16 is a cross-sectional view of a bicycle control device according to a sixth modification of the bicycle control device as illustrated in FIG. 3, the cross-section being taken along a longitudinal center of the cylinder part of the bicycle control device, and selected parts being shown in elevation; FIG. 17 is a cross-sectional view of a bicycle control device similar to FIG. 3 according to another embodiment, the section taken along a longitudinal center of the cylinder part of the bicycle control device, and selected parts are shown in elevation.Selected embodiments will now be explained with reference to the drawings. It will be apparent to those skilled in the art from this disclosure that the following descriptions of the embodiments are provided for illustration only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.Referring initially to FIG. 1, a perspective view of a bicycle control device 12 mounted to a portion of a racing handlebar 13 is shown according to a first embodiment. Here, in FIG. 1, only the bicycle control device 12 is shown on the right side of the race bar 13. However, it will be apparent that the left side of the racing handlebar 13 includes a similar bicycle control device having the features of the bicycle control device 12 as described herein.A shift cable 14, which acts like a control cable, connects the right bicycle control device 12 to a rear derailleur 15. A fluid pressure hydraulic hose 16 connects the right bicycle control device 12 to a brake device 18 for braking the front wheel 17. The brake device 18 includes a brake disk 18 aand a caliper 18 b. The brake disc 18a is fixedly mounted in an integral manner with a hub 17a of the front wheel 17 to rotate together with the front wheel 17. The saddle 18b is fixed to a front fork 19 of the bicycle. The caliper 18 b brakes or decelerates the rotation of the front wheel 17 by pinching the brake disc 18 aafter being operated by the right bicycle control device 12. The front derailleur and the rear derailleur 15 are examples of shifting devices. The right side control device 12 and the left side brake device (not shown) are mirror images of each other and are substantially identical in structure and operation of the bicycle control devices except for different numbers of shift positions. Therefore, only the right side control device will be described here and illustrated in detail. In the following description, the bicycle control device will be referred to simply as a control device.Since a majority of the components of the bicycle are conventionally known in the relevant art, details of these bicycle components will not be described or illustrated in detail herein, except for components related to the control device 12 of the present invention. Moreover, various components of a conventional bicycle not shown or described herein, including brake devices, shift devices, sprockets, and the like, may also be used in conjunction with the control device 12 according to the present invention.As shown in FIGS. 2 and 3, the control device 12 includes a housing member 20, a hydraulic fluid pressure generator 21, a control lever member 22, a shift operation mechanism 23 (see FIG. 3 ), and an adjusting mechanism 35. The housing member 20 includes a fixing part 20 aand a gripping part 20 b. The attachment part 20a is attachable to a curved part 13a formed at the end of the bicycle's race bar 13. The gripping part 20 bis provided with a fastening part 20 aand is configured to be gripped by a cyclist during driving. The attachment part 20 ais a conventionally known member of a band shape, and the control device 12 can be fixed to the racing handlebar 13 by fastening the attachment part 20 awith a bolt.The gripping part 20 bextends longitudinally between a first end 20 cand a second end 20 d. The gripping part 20 bhas a main gripping body 24 and an elastic cover member 25. The elastic cover member 25 has an elastic portion covering the outer surface of the main gripping body 24.The surface of the main gripping body 24 has a surface of a downwardly curved shape for facilitating gripping of the gripping part 20 bby a hand. As shown in FIGS. 2 and 3, the main gripping body 24 has a first housing portion 24 a(see FIG. 2 ) provided on the first end 20 cside, a second housing portion 24 bprovided on the second end 20 dside, and a first bracket 24 cprovided between the first housing portion 24 aand the second housing portion 24 b. The first housing portion 24a houses the shift operating mechanism 23. the second housing portion 24b houses a second bracket 39, as described below, of the control lever member 22. the hydraulic fluid pressure generator 21 is disposed above the second housing portion 24b and aligned with and spaced from the shift operating mechanism 23 in the longitudinal direction. A pair of left and right first brackets 24c are provided which support both ends of a lever shaft 26 on which the control lever member 22 is disposed for pivoting about a first axis X1. The lever shaft 26 is arranged in a left-right direction substantially perpendicular to the traveling direction of the bicycle and has the first axis X 1 as an axis. A curved cut 24d curved so as to follow the curved part 13a of the racing handlebar 13 is formed on the first end 20c side of the main gripping body 24.As shown in FIGS. 2, 3, and 5, the hydraulic fluid pressure generator 21 is provided to provide hydraulic pressure to the brake device 18 and cause the brake device 18 to brake. The hydraulic fluid pressure generator 21 includes a cylinder 30, a piston 31, a rod 32, and a reservoir 33 (see FIG. 2 ). The cylinder 30 is formed in the main gripping body 24. The piston 31 moves linearly inside the cylinder 30 (i.e., forwards and backwards in the linear direction inside the cylinder 30). The rod 32 is mechanically coupled to the piston 31. The reservoir 33 is fluidly coupled to the cylinder 30. The hydraulic fluid pressure generator 21 generates a hydraulic pressure by operating the piston 31 in an insertion direction of the cylinder 30. the hydraulic fluid pressure generator 21 further includes a hydraulic fluid passage 34 a(see FIG. 5 ), an output port 34 b(see FIG. 5 ), a second hydraulic fluid passage 34 c(see FIG. 5 ), a connection part 34 d, and a piston position adjustment mechanism 35A (see FIG. 2 ).Preferably, the cylinder 30 is formed integrally with the main gripping body 24. The cylinder 30 is formed, for example, by cutting or die casting on the second end 20 dside of the main gripping body 24. the cylinder 30 is formed in a cylindrical shape having a cylinder axis A 1. The cylinder 30 has a moving space 30 athrough which the piston 31 moves. The moving space 30a has an open end 30b on a side near the cylinder 30 and a closed end 30c on the side at the second end 20d which is opposite to the open end 30b. The closed end 30c is sealed by a first sealing member 30d. The first sealing member 30 dincludes a sealing member 30 efor sealing the clearance formed with the cylinder 30, and is / is screwed into the closed end 30 c. The closed end 30 cis disposed at a higher position than (i.e., above) the open end 30 b. The cylinder axis A 1 is thus arranged to incline upward toward the front end. A cutting angle α at which the cylinder axis A 1 and a cable take-up axis A 2 intersect as described below is greater than or equal to 20° or less than or equal to 50° when viewed from the side in FIG. 3. In the following embodiment, the cutting angle α is approximately 30°. The cylinder axis A 1 is arranged in front of the cable receiving axis A 2 in a left-right direction perpendicular to the plane of the drawing of FIG. 3 (i.e. to the left of the cable receiving axis A 2) and does not intersect the latter in a plan view.The piston 31 is a substantially cylindrical member. The piston 31 has a first sealing member 31 aand a second sealing member 31 bmounted on the outer circumferential surface of the piston 31 at both ends. The first sealing member 31 aand the second sealing member 31 bhave, for example, a shape of an O-ring. The first sealing member 31 aand the second sealing member 31 bare provided to seal the clearance between the inner circumferential surface of the moving space 30 aof the cylinder 30 and the outer circumferential surface of the piston 31. It is also acceptable that only one sealing member is provided. The piston 31 moves within the moving space 30 abetween a first position shown in FIG. 3 at the distal end of the cylinder 30 and a second position shown in FIG. 4 located lower than the first position due to a braking operation performed by the brake lever member 22. The piston 31 is biased toward the first position by a first return spring 42a.The rod part 32 retracts in the cylinder 30 due to operation of the brake lever member 22 in the braking direction. The rod part 32 is coupled to the piston 31 so as to be free to pivot about an axis substantially parallel to the first axis X 1. The rod part 32 has a rod body 32 a, a two-point pin 32 bmounted on a tip of the rod body 32 a, a rotation shaft 32 cinsertionally inserted into the pin 32 b, and a pair of left and right rollers 32 dfixed to the rotation shaft 32 cin such a manner as to be freely rotatable. The left and right rollers 32d are spaced apart from each other by a distance which is 1.5 times - 2.5 times the diameter of the roller part 32d. The rod body 32 ais a rod-shaped member. The rod body 32a has a cylinder insertion end 32e which engages with the piston 31. The cylinder insertion end 32 eis a part ball having a diameter larger than the rest of the rod body 32 a. Thus, in the present embodiment, the rod part 32 freely pivots with respect to the cylinder 30 about an axis parallel to the second axis X 2. The two ends of the rotating shaft 32c engage with a pair of guide grooves 24e provided in the main gripping body 24. The guide grooves 24 ehave a first part 24 farranged along the cylinder axis A 1 and a second part 24 gbending upward from the first part 24 f. The roller part 32 dis / is pressed by a cam member 41 as described below. The cam member 41 is provided on the brake lever member 22. That is, when the roller part 32 dis / is pressed by the cam member 41, the rotation shaft 32 con the distal end of the rod part 32 gradually approaches the cylinder axis A 1.At this time, the angle which the rod part 32 and the cylinder axis A 1 form gradually decreases, which facilitates the movement of the piston 31 within the cylinder 30.As shown in FIG. 2, the reservoir 33 is capable of storing hydraulic fluid for generating hydraulic pressure. The reservoir 33 is provided such that the necessary amount of hydraulic pressure can be supplied from the reservoir 33 even when the friction material (for example, a brake pad) of the brake device 18 is / is abraded, which may as a result require large amounts of hydraulic fluid. Also, the reservoir 33 prevents irregularities in the application of pressure to the brake device 18 due to swelling or contraction caused by changes in the temperature of the hydraulic fluid. The reservoir 33 is formed in a cylindrical shape with a reservoir axis A3. The reservoir 33 is provided in the gripping part 22 band spaced from and aligned with the cylinder 30 in a left-right direction intersecting the longitudinal direction. The reservoir axis A 3 is substantially parallel to the cylinder axis A 1 and extends substantially at the same height. That is, the reservoir 33 is formed with respect to the inside of the cylinder 30 at an inclination like the cylinder 30 in a right-left direction perpendicular to the plane of the drawing in FIG. 2. The reservoir 33 inclines upward and forward on the second end side of the main gripping body 24. the reservoir 33 has a first closed end 33 bon the first end side and a second closed end 33 con the second end side. At least one of the first closed end 33 band the second closed end 33 cis sealed by a second sealing member 33 awhich is detachably installed in the reservoir 33. In the present embodiment, the second closed end 33 con the second end side is sealed by the second sealing member 33 a. The second sealing member 33 ais fixed in the reservoir by suitable means such as bonding, press-fitting, screwing, or the like. As shown in FIG. 6, the reservoir 33 has a hydraulic fluid injection hole 33 dopening on a side surface and capable of being opposed to the first hydraulic fluid passage 34 aat the second end 20 dof the main gripping body 24. The hydraulic fluid feed hole 33d is sealed by a hydraulic fluid feed cap 33e detachably installed at the end of the hydraulic fluid feed hole 33d.As shown in FIG. 5, the first hydraulic fluid passage 34 ais provided to fluidly connect the cylinder 30 and the reservoir 33. The first hydraulic fluid passage 34 ais disposed closer to the second end 20 dthan the first seal member 31 awhen the piston 31 is disposed in the first position. The first hydraulic fluid passage 34 ais disposed closer to the rod part 32 than the first seal member 31 awhen the piston is disposed in the second position. In the present embodiment, the first hydraulic fluid passage 34 ais disposed facing the hydraulic fluid feed hole 33 d. The first hydraulic fluid passage 34a is formed through a plurality of holes (for example. 3 holes) of a smaller diameter than that of the hydraulic fluid injection hole 33d so as to be formable via the hydraulic fluid injection hole 33d.The output port 34b is for transmitting hydraulic pressure generated in the cylinder 30 to the outside. When the plunger 31 is disposed in the second position, the output port 34 bis disposed closer to the second end 20 dthan the first sealing member 31 a. The output port 34 bis perforated with the inner circumferential surface of the cylinder 30 and the side surface of the main gripping body 24. The surface piercing part of the output terminal 34 bis sealed by a plug 34 g.The second hydraulic fluid passage 34 cis coupled to the output port 34 b. The second hydraulic fluid passage 34 ccommunicates with the output port 34 band extends curvedly toward the first end 20 c. The second hydraulic fluid passage 34c is constituted by a hydraulic pressure pipe 34f disposed within a pipe hole 34e. The tube hole 34 eextends from the first end 20 cto the second end 20 d. The upper part of the main gripping body 24 curves downward in a depression or incision. The second hydraulic fluid passage 34 cis thus arranged to define a substantially flattened V-shape.The connecting part 34 dis connected to the second hydraulic fluid passage 34 c. The connection part 34 dcommunicates with the output interface 34 bvia the second hydraulic fluid channel 34 c. The connecting part 34 dis connectable to the external hydraulic pressure hose 16 (see FIG. 1 ) capable of coupling with the brake device 18. As seen in FIG. 2, the connecting part 34 is disposed adjacent to the side of the second hydraulic fluid passage 34 cwhich is located at the first end 20 c, that is, the connecting part 34 dis disposed adjacent to the first end 20 cof the housing member 20.In the present embodiment, the adjustment mechanism 35 includes a piston position adjustment mechanism 35A capable of adjusting the initial position of the piston with respect to the cylinder and a control lever position adjustment mechanism 35B capable of adjusting the initial position of the control lever with respect to the housing.The piston position adjusting mechanism 35A has a function of adjusting the first position of the piston 31 with respect to the cylinder 30 (an example of the initial position of the piston 31). The piston position adjusting mechanism 35A also has a function of operating the piston 31 upon coupling with the first operating lever 36 and a cam member 41 described below. The piston position adjusting mechanism 35A has an adjusting member 35 afor coupling a first operation lever 36 of the control lever member 22 (described below) and the cam member 41 (described below). The adjusting member 35 ais an example of a first adjusting member. The adjusting member 35 aincludes an adjusting bolt 35 bwhich penetrates a support shaft 40, described below, of the first operating lever 36. Here, the adjustment bolt 35 bis an example of a first adjustment bolt.A proximal head of the adjustment bolt 35 bis caught by a through hole 40 aof the support shaft 40. Thus, the initial position of the cam member 41 with respect to the first axis X1 can be adjusted, allowing the first and initial positions of the piston 31 to be adjusted, respectively. The second bracket 39 and the cam member 41 are / are coupled by the adjustment bolt 35 b, and the cam member 41 rotates due to the pivoting of the first operation lever 36 about the first axis. That is, the adjustment bolt 35 bhas a function of adjusting the first position of the piston 31 and a function of coupling the first control lever 22 to the cam member 41.The control lever position adjusting mechanism 35B has a configuration substantially similar to that of the piston position adjusting mechanism 35A. The control lever position adjusting mechanism 35B has a function of adjusting the first position of the first control lever member 22 with respect to the housing member 20 (an example of the initial position of the control lever member 22). The control lever position adjusting mechanism 35B has a function of operating the piston 31 upon coupling with the first operating lever 36. The piston position adjusting mechanism 35A has an adjusting member 35 afor coupling a first operating lever 36, as described below, of the control lever member 22 to the cam member 41, as described below. Here, the adjusting member 35 ais an example of a third adjusting member, and the adjusting bolt 35 bis an example of a third adjusting bolt. The adjusting member 35 aincludes an adjusting bolt 35 bwhich penetrates a support shaft 40, as described below, of the first operating lever 36. A proximal head of the adjustment bolt 35 bis caught by a through hole 40 aof the support shaft 40. It is therefore possible to adjust the initial position of the control lever member 22 with respect to the first axis X1 as well as the first position of the control lever 22, i.e., the control lever member 22. The second bracket 39 and the cam member 41 are coupled by means of the adjustment bolt 35 b. The cam member 41 rotates about the first axis X 1 due to the pivoting of the first operation lever 36. Thus, the adjustment bolt 35 bhas a function of adjusting the first position of the first operation lever 36 and coupling the first control lever member 22 and the cam member 41.Moreover, the adjustment mechanism 35 has a configuration similar to that of the piston position adjustment mechanism 35A and the control lever position adjustment mechanism 35B. Thus, by coupling the second bracket 39, the cam member 41, and the first operation lever 36, the adjustment bolt 35 bhas a function of adjusting the first position of the piston 31, a function of adjusting the first position of the first operation lever 36, and a function of coupling the first control lever member 22 and the cam member 41. Here, the adjusting member 35 ais an example of a fourth adjusting member, and the adjusting bolt 35 bis an example of a fifth adjusting bolt.As shown in FIGS. 2 and 7, the control lever member 22 includes the first operation lever 36, the second operation lever 37, and the cam member 41. The first operating lever 36 has a support member 36 aand a lever 36 bcoupled to the support member 36 ato pivot about a second axis X 2. The support member 36a is coupled to the lever shaft 26 disposed on the housing member 20 for pivoting about the first axis X1. The support member 36 aboves about the first axis X 1 from a first initial position shown in FIG. 2 to a pivoted position shown in FIG. 4, and as shown in FIG. 7, the support member 36 ais biased toward the first initial position by a second return spring 42 bin the form of a coil spring. The second return spring 42 bis wound around the lever shaft 26. One end of the second return spring 42 bengages with the first bracket 24 cof the main gripping body 24, and another end engages with a pair of side plates 39 cof the support member 36 aas described below.As shown in FIG. 2, the support member 36 aincludes a second bracket 39 and a flanged hollow support shaft 40. The second bracket 39 is / is formed by folding a metal plate from front to rear and from left to right. The flanged hollow support shaft 40 is / is supported by the second bracket 39. The second bracket 39 has a substantially rectangular base 39a, a pair of front and rear support plates 39b, and a pair of left and right side plates 39c. The front and rear support plates 39b are formed in parallel by folding the front and rear ends of the base 39a downward. The left and right side plates 39c are formed in parallel by folding the left and right ends of the base 39a downward. The two ends of the support shaft 40 are / are supported by the support plates 39 b. The side plates 39 cextend rearward from the base 39 aand are / are supported by the lever shaft 26 to freely swing about the first axis X 1. The support shaft 40 is arranged along a direction that is not parallel to the first axis X 1 (for example, in a reverse direction), that is, along a second axis X 2 that is substantially parallel to the traveling direction of the bicycle. The support shaft 40 is disposed above the lever shaft 26. The support shaft 40 is mounted on the support plates 39 bof the support member 36 aby a nut 43 screwed on one end of the support shaft 40. As described above, the adjusting bolt 35 bis piercingly disposed on the support shaft.As shown in FIGS. 2 and 7, the lever 36 bis coupled to the lever shaft 26 together with the support member 36 ato freely pivot about the first axis X 1. The lever 36 bis also coupled to the support shaft 40 together with the support member 36 ato freely pivot about the second axis X 2. The lever 36 bis provided to perform braking operations and shifting operations in one direction of the rear derailleur 15. The lever 36 bis controllably coupled to the shift operating mechanism 23 to pivot about the second axis X 2, thereby actuating a cable take-up member 50, as described below, of the shift operating mechanism 23 and taking up, i.e., pulling, the shift cable 14 to upshift (or downshift) the rear derailleur 15. In addition, pivoting the lever 36 babove the first axis X 1 generates hydraulic pressure, thereby causing a braking force to be applied by the brake device 18.As shown in FIG. 2, the lever 36 bincludes an insertion end part 36 c, a shift operation part 36 d, and a free end part 36 e. The lever 36 bhas a contact part 36 fprovided between the insertion end part 36 cand the shift operation part 36 d. The touch part 36 fis capable of touching the second operation lever 37 when the first operation lever 36 is / becomes operated from a second initial position toward a first shift position. The second operating lever 37 can thus be pivoted together with the first operating lever 36. As shown in FIG. 8, the lever 36 bmoves around the second axis X 2 between the second initial position indicated by solid lines and the first shift position indicated by two-dot chain lines. The insertion end part 36 cis rotatably coupled to the support shaft 40. The shift operation part 36 dextends downward from an end part of the housing member 20. The lever 36b is biased toward the second initial position by a third return spring 45 wound around the support shaft 40. One end of the third return spring 45 engages with the insertion end part 36 c, and another end engages with a pair of bases 39 aof the support member 36 a.In the present embodiment, the second operating lever 37 is coupled to one end of the support shaft 40 to freely pivot about the second axis X 2, and is provided for performing shifting operations in the other direction of the rear derailleur 15. the second operating lever 37 is controllably coupled to the shifting operating mechanism 23 for operating the cable take-up member 50 and unwinding, i.e., releasing, the shifting cable 14, thereby downshifting or upshifting the rear derailleur 15.As shown in FIG. 9, the second operation lever 37 moves around the second axis X 2 between a third initial position indicated by solid lines and a second shift position indicated by two-dot chain lines. The second operating lever 37 is rotatably attached to one end of the support shaft 40 for free rotation about the second axis X 2. As described above, the second operation lever 37 is controllably coupled to the shift operation mechanism 23 to release the shift cable 14. The second operation lever 37 is an example of a release operation lever. The second operation lever 37 is biased toward the third initial position by a fourth return spring 46 (see FIG. 2 ) disposed between the support shaft 40 and the cam member 41. one end of the fourth return spring 46 engages with the insertion end of the second operation lever 37, and another end engages with the main gripping body 24.In the present embodiment, the shift operating mechanism 23 is / is substantially operated by rotating the first operating lever 36 about the second axis X 2 of the support shaft 40 or by rotating the second operating lever 37 about the second axis X 2 of the support shaft 40.As shown in FIG. 5, the cam member 41 is provided to pivot about the first axis X 1 and to operate the rod part 32 of the hydraulic fluid pressure generator 21 due to the pivoting of the first operating lever 36 about the first axis X 1. The cam member 41 has a pair of left and right cam plates 41 aand a coupling part 41 b. The coupling part 41 bis integrally formed with the pair of cam plates 41 afor coupling the cam plates 41 a. The cam plates 41 aare spaced apart from each other in the left-right direction with the same distance therebetween as the pair of rollers 32 d. The cam plates 41a have a through hole 41c which can pierce the lever shaft 26, a coupling hole 41d and a cam surface 41e which is contacted by the rollers 32d. The through hole 41c is formed at the lower part of the cam member 41. The coupling hole 41d is formed above the through hole 41c. The coupling hole 41 dsupports a coupling shaft 38 for coupling the first operation lever 36 via the piston position adjustment mechanism 35A. The coupling hole 41 dis formed in a slightly elliptical shape so that the coupling shaft 38 is capable of moving in a direction connecting the coupling hole 41 dand the through hole 41 cwhen the cam member 41 pivots. In the embodiment, the cam surface 41 ehas a curved cut formed therein, so that the degree of movement of the piston 31 varies due to the rotation of the cam member 41, and particularly during an initial rotation, increases and decreases as the rotation proceeds. This allows braking to take place within a short period of time and easily setting a braking force after a braking operation.The cam member 41 is coupled to the lifting shaft 26 penetrating the through hole 41 cto pivot about the first axis X 1. A screw hole 38 a, into which the adjustment bolt 35 bis / is screwed, is formed in the coupling shaft 38 in a central part of the axis direction. The cam member 41 is biased in the clockwise direction in FIG. 5 by the second return spring 42 b(see FIG. 7 ) provided on the lever shaft 26. The cam member is also biased in the clockwise direction in FIG. 5 by the first return spring 42 a.The shift operating mechanism 23 will be briefly described with reference to FIGS. 7 to 10. However, the shift operation mechanism 23 is not limited to the structure described herein. A shift operating mechanism of a different configuration may be used in the case of the aforementioned control lever member 22 having the first operating lever 36 and the second operating lever 37. The shift operating mechanism 23 is fixed to one side at the first end 29 cof the main gripping body 24 of the housing member 20. The shift operation mechanism 23 includes a cable take-up member 50, a first input member 52, a second input member 54, and a position mechanism 56. the center of a cable take-up shaft 51 extending in the longitudinal direction of the gripping part 20 bis defined as the cable take-up axis A 2. In the present embodiment, the cable take-up axis A 2 is coaxial with the second axis X 2.An inner cable or core of the switch cable 14 is wound around the cable receiving member 50. The cable take-up member 50 is fixed to the cable take-up shaft 51 for free rotation about the cable take-up axis A2. The cable take-up member 50 is biased in a cable releasing direction by a return spring, which is not shown in the figures. Specifically, the return spring exerts a biasing force on the cable take-up member 50 to rotate in the cable releasing direction. The cable take-up member 50 has a substantially cylindrical shape with a cable fixing part 50a which is fixable to a nipple (not shown) mounted on an end of the inner cable of the shift cable 14. When the first operation lever 36 is operated from the second initial position toward the first shift position, the cable take-up member 50 rotates about the cable take-up axis A 2 in a first rotation direction R 1 (see FIG. 10 ) and draws the inner cable. When the second operation lever 37 is / is operated from the third initial position toward the second shift position, the cable take-up member 50 rotates about the cable take-up axis A 2 in a second rotational direction R 2 (see FIG. 10 ) and unwinds the inner cable.The first input member 52 and the second input member 54 are independently coupled to the first operating member 36 and the second operating member 37, which allows a shift operation to be performed. The first input member 52 pivots about the cable take-up axis A 2 due to the pivoting of the first operating lever 36 about the second axis X 2. As shown in FIG. 7, one end of the first input member 52 is capable of touching the touch part 36 fof the lever 36 b. When the first operating lever 36 is / is pivoted about the second axis X 2 from the second initial position toward the first shift position, that is, the first input member 52 pivots about the cable take-up axis A 2.The second input member 54 pivots about the cable take-up axis A 2 due to the pivoting of the second operation lever 37 about the second axis X 2. One end of the second input member 54 is capable of touching an intermediate part of the second operation lever 37. Thus, when the second operating lever 37 is / is pivoted about the second axis X 2 from the third initial position toward the second shift position, the second input member 54 pivots about the cable take-up axis A 2.The position mechanism 56 is a mechanism for determining the rotational position of the cable take-up member 50 in correspondence with the gear shift lever. The positioning mechanism 56 includes a receiving pawl 58, a releasing pawl 60, a receiving plate 62, a releasing plate 64, a positioning pawl 66, a holding pawl 68, and a positioning plate 70. The take-up pawl 58 pivots together with the first input member 52 when the first operating lever 36 is / is operated from the second initial position toward the first shift position. Thus, the take-up pawl 58 forces the cable take-up member against the biasing force of the return spring and rotates the cable take-up member 50 in the first rotational direction R 1.The release pawl 60 is pivotally provided on the second input member 54. The release pawl 60 rotates together with the second input member 54 when the second operation lever 37 is / is operated from the third initial position toward the second shift position. The release pawl 60 is / is thereby released from the cable take-up member 50, and the cable take-up member 50 is / is rotated in the second rotational direction R 2 by the biasing force of the return spring.The receiving plate 62 and the positioning plate 70 are fixed to the cable receiving member 50 and rotate integrally with the cable receiving member 50, and the receiving plate 62 has a plurality of receiving teeth. The take-up teeth selectively engage the take-up pawl 58. The cable take-up member 50 thus rotates in the first rotational direction R 1.The positioning plate 70 has a plurality of positioning teeth. The positioning teeth selectively engage the positioning pawl 66. The cable take-up member 50 is / is thereby held in a predetermined shift position after either a take-up operation by the first operating lever 36 or a release operation by the second operating lever 37.The release plate 64 is / is rotated by the release pawl 60 in the first rotational direction R 1 so that the positioning pawl 66 and the locking pawl 68 selectively engage and disengage with the release plate 64 and leave the positioning plate 70 so that the cable take-up member 50 rotates in the second rotational direction R 2.In the embodiment, as shown in the figures, a cyclist can rotate the first operating lever 36 from a first initial position toward a braking position while gripping the racing handlebar 13 or the curved part of the gripping part 20 b. The first operating lever 36 rotates about the first axis X 1. The rotation of the first operating lever 36 causes the piston 31 of the hydraulic fluid pressure generator 21 to be pressed, thereby generating a hydraulic pressure inside the cylinder 30, activating the brake device 18, and braking the bicycle.The first operating lever 36 is capable of rotating about the second axis X 2 and laterally pivoting from a second initial position toward a shift position to downshift the rear derailleur 15 to a lower shift stage, for example. When released, the first operating lever 36 returns to the second initial position due to the biasing force of the third return spring 45. the second operating lever 37 is capable of lateral pivoting from a rest position to upshift to a higher shift stage, for example, and returns to the third initial position due to the biasing force of the fourth return spring 46 upon release.When the first operating lever 36 is / is pivoted to shift gears, the second operating lever 37 pivots together with the first operating lever 36 instead of moving in the opposite direction to the first operating lever 36. Thus, the first operation lever 36 is capable of pivoting without being obstructed by the second operation lever 37.For example, while a cyclist grasps the lowermost position of the curved part of the racing handlebar 13, he may stretch the center finger or ring finger of the curved part gripping hand, put the finger on the first operating lever 36, and pull the first operating lever 36 toward a braking position, i.e., toward the curved part 13 a. This operation of the lever causes the shift operating mechanism 23 to rotate about the first axis X 1 with the support member 36 a. This rotational movement of the first operating lever 36 causes a hydraulic pressure that brakes the bicycle.In the following description, only those features that are different from the above-described embodiment will be described and numbered in the drawings, and a description of the configuration and operation of other features that are similar to those of the above-described embodiment and their numbering will be omitted in the drawings.In the embodiment as described above, the second axis X 2 and the cable take-up axis A 2 are coaxial, but the present invention is not limited to such a configuration as shown in FIG. 11, the second axis X 2 and the cable take-up axis may be located on different axes in a controller 112. In FIG. 11, the cable take-up axis A 2 of a shift operating mechanism 123 is disposed below the second axis X 2 of a control lever member 122. The cable take-up axis A 2 and the second axis X 2 may thus be arranged so as to intersect each other.In the above-described embodiment, the adjustment bolt 35 bof the adjustment mechanism 35 (i.e., the piston position adjustment mechanism 35A and the control lever position adjustment mechanism 35B) is arranged piercingly through the support shaft 40 along the second axis X 2, but the present invention is not limited to such a configuration. In a control device 212 according to a second modification, as shown in FIG. 12, an adjustment bolt 235 b(an example of a second adjustment bolt, a fourth adjustment bolt, or a sixth adjustment bolt) that serves to adjust an adjustment member 235 a(an example of a second adjustment member or a fourth adjustment member) of an adjustment mechanism 235 (formed by a piston position adjustment mechanism 235A and a control lever position adjustment mechanism 235B) is disposed in the vicinity of a lever shaft 26 having a first axis X 1. The adjusting bolt 235 bis screwed into a screw hole 236 gformed in the lever 36 b, and an end thereof contacts a coupling part 241 bof a cam member 241. The second initial position of a first operating lever 236 is / is thus changed, and the position of a piston 31 moves into the cylinder 30. The cam member 241 is biased in the clockwise direction in FIG. 12 by a first return spring 42 aarranged on the cylinder 30. In this case, there is no need for an adjusting bolt that pierces the inside of the support shaft 40 and couples to the second bracket 39 and the cam member 241. The support member and the cam member may also be integrally formed. In such a case, there is no need for an adjusting bolt which pierces the supporting member.In a control device 312 according to a third embodiment, as shown in FIG. 13, an adjusting member 335 a(an example of a first adjusting member) of an adjusting mechanism 335 (constituted by a piston position adjusting mechanism 335A and a control lever position adjusting mechanism 335B) is constituted by a worm gear bolt 335 bfixed to a cam member 341. The worm gear bolt 335 bhas worm gear teeth 335 cformed on an outer circumferential surface. Worm gear teeth 339d which engage with the worm gear threads 335c are formed on a pair of side plates 339c of a first bracket 339 of a support member 336a. In this case, the adjusting bolt of the above-described embodiment is / is used as a coupling bolt for coupling a second bracket 339 of the control lever member 22 and a cam member 341.In a control device 412 according to a fourth modification, as shown in FIG. 14, an adjustment mechanism 435 (constituted by a piston position adjustment mechanism 435A or a control lever position adjustment mechanism 435B) includes an adjustment member 435 acapable of adjusting the relative positions of a control lever member 422 and a piston and goes along for coupling the piston 31 and the control lever member 422. The adjusting member 435 ais an example of a second adjusting member. Specifically, the piston 31 is coupled to a second bracket 439 of a support member 436 aof a control lever member 422 via a rod part 432. A cam member is therefore not provided.The rod part 432 does not include a roller, and side plates 439 cof a second bracket 439 are pivotally coupled to a pin 432 b. A rod body 432 aincludes a first rod body 432 ecoupled to the cylinder 30 and a second rod body 432 farranged spaced apart from the first rod body 432 e. The plug pin 432 bis disposed on the second rod body 432 f. The adjusting member 435a has an adjusting screw 435b which is / is screwed in the first rod body 432e and the second rod body 432f and adjusts the length of the rod part 432. The rotation of the first rod body 432 eabout an axis is restricted.The adjustment screw 435 bincludes a first male screw 435 c, a second male screw 435 d, and a rotatably operated non-circular gripping part 435 e. The first male screw 435 cis / is screwed into the first rod body 432 e. The second male screw 435 dis / is screwed into the second rod body 43 f. The rotatably operated non-circular gripping part 435 eis disposed between the first male screw 435 cand the second male screw 435 d. The rotatably operated non-circular gripping part 435 emay have, for example, a hexagonal shape. The first male screw 435 cis, for example, a right-handed screw, and the second male screw 435 dis, for example, a left-handed screw.In the case of the adjustment mechanism 435 (the piston position adjustment mechanism 435A or the control lever position adjustment mechanism 435B) having the above-described configuration, the first rod body 432 eand the second rod body 432 fmoves toward each other and shorten the rod part 432 when the grip part 435 eis / is rotated in a first direction (for example, clockwise direction toward the piston) by a hand or by a tool. The first position of the piston 31 is / is thereby moved rearward (rightward in FIG. 14 ). When the gripping part 435 is / is rotated in a second direction by a hand or by a tool, the first rod body 432 eand the second rod body 432 fmoves away from each other and lengthen the rod part 432. The first position of the piston 31 is / is thereby moved forward (leftward in FIG. 14 ). This configuration also allows the first position of the piston 31 to be adjusted.In the fourth embodiment, the piston position adjusting mechanism 435A or the control lever position adjusting mechanism 435B is realized according to the magnitude of the biasing force of the first return spring 42 athat biases the piston toward the first position and the second return spring 42 bthat returns a control lever member 422 toward the first initial position. Typically, the piston position adjusting mechanism 435A will be realized due to the greater amount of the biasing force of the second return spring 42 b. When the biasing force of the second return spring 42 bis not less than the biasing force of the first return spring 42 a, the control lever position adjusting mechanism 435B will be realized.In the case of a control device 512, as shown in FIG. 15, a second operating lever 537 of a control lever member 522 includes a take-up operating lever 537a and a release lever 537b. A first operating lever 536 pivots only about a first axis X 1 and does not pivot about a second axis X 2. Pivoting of the take-up operating lever 537 aabove the second axis X 2 pivots the first input member 52, thereby operating the cable take-up member 50 in a take-up direction. Pivoting of the release operating lever 537 babove the second axis X 2 pivots the second input member 54, thereby rotating the cable take-up member 50 in a release direction opposite to the take-up direction.In a control device 612, as shown in FIG. 16, a second operation lever 637 of a control lever member 622 pivots not about the second axis X 2 but about a third axis X 3 of a support shaft 670 which is disposed on a first operation lever 636 further toward a distal end than the second axis X 2. The support shaft 670 is mounted on a first operation lever 636.While the foregoing modified embodiments mainly describe the piston position adjusting mechanism, similar modifications and applications are possible in the case of the control lever position adjusting mechanism. Embodiments of the present invention have been described above, but the present invention is not limited to these embodiments; various modifications are possible to the extent that they remain within the spirit of the invention. Specifically, the various embodiments and modifications described in the present specification can be combined as needed. (a) In the above-described embodiment, a disc brake device has been presented as an example of a hydraulically operated brake device, but the brake device controlled according to the present embodiment is not limited to a disc brake device. The present invention can be applied to a control device for controlling any hydraulically operated brake device. For example, the present invention can also be applied to bicycle control devices for controlling a brake device such as a hydraulically operated caliper brake, drum brake, or the like. (b) In the above-described embodiment, a reservoir for storing hydraulic fluid for generating hydraulic pressure is provided, which allows feeding hydraulic fluid into the cylinder when the level of the hydraulic fluid falls and suppressing changes in braking behavior regardless of changes in the temperature of the hydraulic fluid, but the present invention can also be applied in the case of bicycle control devices that do not have a reservoir. (c) In the case of the hydraulic fluid pressure generator 21 of the above-described embodiment, hydraulic pressure is generated by pressing the piston 31, i.e., moving the piston 31 into the cylinder 30, However, the present invention is not limited to such a configuration. For example, hydraulic pressure can be generated by pulling on the piston, i.e. pulling the piston out of the cylinder. In such a case, the pulling force acts only on the rod part serving as a coupling part for the piston and the first operating lever. This prevents the rod part from buckling and allows the rigidity of the coupling part to be reduced and the weight of the rod part to be reduced. However, in such a case, a force equal to the hydraulic pressure multiplied by the rod reduced area of the cylinder of the rod is generated, which requires a cylinder having a larger diameter than in the case of the above-described embodiment. (d) In the above-described embodiment, one end of the first return spring 42 acontacts an end surface of the piston 31, but as shown in FIG. 17, one end of a first return spring 742 amay be accommodated inside a housing hole 731 aformed in a piston 731. This enables easy provision of a space for accommodating the spring when the piston 731 returns to the second position. Thereby, a higher degree of freedom in the configuration of the spring is obtained. (e) In the above-described embodiment, the control lever member 22 is constituted by a first operating lever 36 for performing braking operations and shifting operations and a second operating lever 37 for performing shifting operations. However, it is also acceptable to employ a configuration in which a braking operation is performed by pivoting an operation lever about the first axis, a first switching operation (for example, a downshift operation) is performed by pivoting the lever in one direction about a second axis, and a second switching operation (for example, an upshift operation) is performed by pivoting the lever in the other direction about the second axis. (f) In the above-described embodiment, a first return spring 42 aand a second return spring 42 bare provided on the first operation lever 36 and the hydraulic fluid pressure generator 21, but it is also acceptable to provide only a first return spring 42 a. When a cam member and a roller are not provided and the second bracket is directly coupled to the rod part, it is acceptable to provide only one of the first return spring and the second return spring. (g) In the above-described embodiment, a hydraulic pressure pipe 34 fis used as the second hydraulic escape passage 34 cin FIG. 5, but an inner hydraulic pressure hose 34 hthat passes through the pipe hole 34 eor between the cover member 25 and the main handle body 24 may also be used. It is also possible to form a hole in the gripping part 20 bfor producing a second hydraulic fluid channel. In such cases, the end of the hole must be sealed by means of a plug.As used herein, the following directional terms mean "forward", "rearward", "front", "rear", "upper", "lower", "above", "below", "upward", "downward", "upper", "lower", "side", "vertical", "horizontal", "perpendicular" and "transverse", as well as any similar directional terms of such directions of a bicycle in an upright rider position and equipped with the control device 12, when the right side is referred to as viewed from the rear end of the bicycle and the left side is referred to as viewed from the rear end of the bicycle. Finally, terms of degree such as "substantially", "about" and "approximately" as used herein mean an amount of deviation from the modified term, such that as a result no significant change occurs. These terms may be considered to include a + / - 5% deviation of the moortified term if this deviation does not negate meaning of the modified word.

Claims

A bicycle control device (12; 112; 212; 312; 412; 512; 612) attachable to a bicycle handlebar (13) and capable of controlling a brake device (18) and a shifting device (15), the bicycle control device (12; 112; 212; 312; 412; 512; 612) comprising: a housing member (20) having a grip part (20b) extending in a longitudinal direction between a first end (20c) and a second end (20d), and an attachment part (20a) provided at a side at the first end (20c) of the grip part (20b) and attachable to a handlebar; a control lever member (22; 122; 522; 622) capable of pivoting with respect to the housing member (20); a shift operating mechanism (23; 123) provided on the housing member (20); a hydraulic pressure generating part (21) for controlling the brake device (18), the hydraulic pressure generating part (21) comprising a cylinder (30) provided on the housing member (20) and disposed closer to a side at the second end (20d) of the gripping part (20b) than the shift operating mechanism (23; 123), a piston (31, 731) displaceable inside the cylinder (30) and operated by the control lever member (22; 122; 522; 622); and a reservoir (33) fluidly coupled to the cylinder (30), the reservoir (33) being provided in the gripping part (22b) and spaced from and aligned with the cylinder (30) in a left-right direction intersecting the longitudinal direction.A bicycle control device (12; 112; 212; 312; 412; 512; 612) attachable to a bicycle handlebar (13) and capable of controlling a brake device (18) and a shifting device (15), wherein the bicycle control device (12; 112; 212; 312; 412; 512; 612) includes: a housing member (20) having a gripping part (20b), an inner space provided in a longitudinal direction between a first end (20c) and a second end (20d) and spaced from the first end (20c) and from the second end (20d), and a fixing part (20a) provided at a side at the first end (20c) of the gripping part (20b) and fixable to a handlebar, the inner space being disposed closer to the second end (20d) than the fixing part (20a); a control lever member (22; 122; 522; 622) capable of pivoting with respect to the housing member (20); a shift operation mechanism (23; 612; 123) provided on the housing member (20) for controlling a control cable (14) that can be coupled to the shifting device (15); a hydraulic pressurizing part (21) for controlling the braking device (18), the hydraulic pressurizing part (21) comprising a cylinder (30) provided on the housing member (20) and arranged closer to a side at the second end (20d) of the gripping part (20b) than the inner space, a piston (31, 731) displaceable inside the cylinder (30) and operated by the control lever member (22; 122; 522; 622); and a reservoir (33) fluidly coupled to the cylinder (30), the reservoir (33) provided in the gripping part (22b) and being spaced from and aligned with the cylinder (30) in a left-right direction intersecting the longitudinal direction.The bicycle control device (12; 112; 212; 312; 412; 512; 612) according to claim 1 or 2, wherein the bicycle control device (12; 112; 212; 312; 412; 512; 612) further comprises: a piston position adjusting mechanism (35a; 235a; 335a; 435a) capable of adjusting the initial position of the piston (31, 731) with respect to the cylinder (30).The bicycle control device (12; 112; 212; 312; 412; 512; 612) according to claim 3, wherein the piston position adjustment mechanism (35a; 235a; 335a; 435a) includes a second adjustment member (435a) for coupling the control member and the piston (31, 731) capable of adjusting the relative position of the control lever member (22; 122; 522; 622) and the piston (31; 731).The bicycle control device (12; 112; 212; 312; 412; 512; 612) according to claim 4, wherein the hydraulic pressure generating part (21) includes a rod part (32; 432) coupled to the piston (31; 731) and operated by the control lever member (22; 122; 522; 622); and the second adjusting member (435a) includes an adjusting screw (435b) capable of adjusting the length of the rod part (32, 432).The bicycle control device (12; 112; 212; 312; 412; 512; 612) according to claim 5, wherein the hydraulic pressure generating part (21) includes the rod part (32, 432) coupled to the piston (31, 731) and operated / is by means of the control lever member (22; 122; 522; 622); the control lever member (22; 122; 522; 622) includes a first operating lever (36; 236; 536; 636) and a cam member (41; 141; 241; 341) for pivoting about a first axis (X1) in conjunction with pivoting of the first operating lever (36; 236; 536; 636) and operating of the rod part (32; 432); and the piston position adjusting mechanism (35a; 235a; 335a; 435a) includes a first adjusting member (35a; 432; 335 a) coupled to the cam member (41; 141; 241; 341) and capable of adjusting the initial position of the cam member (41; 141; 241; 341).The bicycle control device (12; 112; 212; 312; 412; 512; 612) according to claim 6, wherein the first adjustment member (35a; 335a) includes a first adjustment bolt (35b) disposed along a second axis (X2) intersecting the first axis (X1) and / or a second adjustment bolt (235b) provided in the vicinity of the first axis (X1).The bicycle control device (12; 112; 212; 312; 412; 512; 612) according to claim 6 or 7, wherein the first adjustment member (35a; 335a) includes a worm gear bolt (335b) provided on one of the first operating lever (36; 236; 536; 636) and the cam member (41; 141; 241; 341) and adapted to engage with the other of the first operating lever (36; 236; 536; 636) and the cam member (41; 141; 241; 341).The bicycle control device (12; 112; 212; 312; 412; 512; 612) according to any one of claims 1 to 8, wherein the bicycle control device (12; 112; 212; 312; 412; 512; 612) further comprises: a control lever position adjustment mechanism (35b; 235b; 335b; 435b) for adjusting the initial position of the control lever member (22; 122; 522; 622) relative to the housing member (20).The bicycle control device (12; 112; 212; 312; 412; 512; 612) according to claim 9, wherein the control lever position adjustment mechanism (35b; 235b; 335b; 435b) comprises a third adjustment member (35a) coupled to the control lever member (22; 122; 522; 622) and capable of adjusting the initial position of the control lever member (22; 122; 522; 622).The bicycle control device (12; 112; 212; 312; 412; 512; 612) according to claim 10, wherein the third adjusting member (35a) includes a third adjusting bolt (35b) disposed along a second axis (X2) intersecting the first axis (X1) and / or a fourth adjusting bolt (235b) provided in the vicinity of the first axis (X1).The bicycle control device (12; 112; 212; 312; 412; 512; 612) according to claim 8, wherein the third adjustment member (35a) includes the worm gear bolt (335b) provided on the control lever member (22; 122; 522; 622).The bicycle control device (12; 112; 212; 312; 412; 512; 612) according to claim 5, wherein the hydraulic pressure generating part (21) includes the rod part (32; 432) coupled to the piston (31, 731) and operated by the control lever member (22; 122; 522; 622); the control lever member (22; 122; 522; 622) includes a cam member (41; 141; 241; 341) for pivoting about a first axis (X1) in conjunction with pivoting of the control lever member (22; 122; 522; 622) that operates the rod part (32; 432); and wherein the device includes a fourth adjuster (35a; 235a) coupled to both the cam member (41; 141; 241; 341) and the control lever member (22; 122; 522; 622) and capable of adjusting the initial position of the control lever member (22; 122; 522; 622) and the cam member (41; 141; 241; 341).The bicycle control device (12; 112; 212; 312; 412; 512; 612) according to claim 13, wherein the fourth adjustment member (35a; 235a) includes a fifth adjustment bolt (35b) disposed along a second axis (X2) intersecting the first axis (X1) and / or a sixth adjustment bolt (235b) provided in the vicinity of the first axis (X1).The bicycle control device (12; 112; 212; 312; 412; 512; 612) according to claim 8, wherein the fourth adjusting member (35a; 235a) includes the worm gear bolt (335b) provided on one of the control lever member (22; 122; 522; 622) and the cam member (41; 141; 241; 341) and adapted to engage with the other of the control lever member (22; 122; 522; 622) and the cam member (41; 141; 241; 341).The bicycle control device (12; 112; 212; 312; 412; 512; 612) according to any one of the preceding claims, wherein the cylinder (30) and the reservoir (33) are formed in a cylindrical shape.The bicycle control device (12; 112; 212; 312; 412; 512; 612) according to any one of the preceding claims, wherein the cylinder (30) has a cylinder axis (A1), the reservoir (33) has a reservoir axis (A3), and the cylinder axis (A1) and the reservoir axis (A3) are parallel.The bicycle control device (12; 112; 212; 312; 412; 512; 612) according to any one of the preceding claims, wherein the reservoir (33) has a first closed end (33b) on the first end side and a second closed end (33c) on the second end side, at least one of the first closed end (33b) and the second closed end (33c) being sealed by a second sealing member (33a) detachably installed in the reservoir (33).The bicycle control device (12; 112; 212; 312; 412; 512; 612) according to any one of the preceding claims, wherein the shift operating mechanism (23; 123) is configured to be coupled to a shift device (15) by means of a control cable, and wherein the shift operating mechanism (23; 123) operates the shift device (15).

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