TWI704078B - Bicycle hydraulic device - Google Patents

Abstract

A bicycle hydraulic device comprises a base member and a cover member. The base member is configured to be mounted to a bicycle body. The base member comprises a hydraulic bore and an insertion portion. The hydraulic bore has a first end and a second end. The first end defines a first opening. The insertion portion is provided between the first end and the second end. The insertion portion includes an insertion opening different from the first opening. The cover member is provided at the insertion portion via the insertion opening to cover the hydraulic bore.

Description

Bicycle hydraulic device

The invention relates to a bicycle hydraulic device.

Cycling has become an increasingly popular form of entertainment and a means of transportation. In addition, cycling has become a very popular competitive sport for amateurs and professionals. Regardless of whether the bicycle is used for recreation, transportation or competition, the bicycle industry is constantly improving various components of the bicycle. A bicycle component that has been extensively redesigned is a hydraulic device.

According to a first aspect of the present invention, a bicycle hydraulic device includes a base member and a cover member. The base member is configured to be mounted to a bicycle body. The base component includes a hydraulic inner diameter and an insertion part. The hydraulic inner diameter has a first end and a second end. The first end defines a first opening. The insertion part is provided between the first end and the second end. The insertion part includes an insertion opening different from the first opening. The cover member is provided at the insertion portion through the insertion opening to cover the hydraulic inner diameter.

Using the bicycle hydraulic device according to the first aspect, the hydraulic inner diameter can be covered with a simple structure such as a cover member. Therefore, the structure of the bicycle hydraulic device can be simplified.

According to another aspect of the present invention, a bicycle hydraulic device includes a base member, a Piston, a cover member and a sealing member. The base member is configured to be mounted to a bicycle body. The base member contains a hydraulic inner diameter. The hydraulic inner diameter has a first end and a second end. The first end defines a first opening. The second end defines a second opening. The piston is movably provided in the hydraulic inner diameter so as to be removable from the second opening. The cover member is provided on the base member to define a hydraulic chamber in the hydraulic inner diameter between the cover member and the piston. The sealing member is provided in the hydraulic inner diameter between the cover member and the piston. The sealing member is attachable and detachably coupled to the cover member.

Using the bicycle hydraulic device according to the above aspect, the structure of the bicycle hydraulic device can be simplified by using the cover member and the sealing member.

According to a second aspect of the present invention, the bicycle hydraulic device according to any of the above aspects is configured such that the insertion portion is provided closer to the first end than the second end.

By using the bicycle hydraulic device according to the second aspect, a space provided between the insertion portion and the second end of the hydraulic inner diameter can be effectively used.

According to a third aspect of the present invention, the bicycle hydraulic device according to any of the above aspects is configured such that the second end defines a second opening. The insertion opening is different from the second opening.

Using the bicycle hydraulic device according to the third aspect, the cover member can be attached to the insertion portion in a state where the piston is provided in one of the hydraulic inner diameters. Therefore, an assembly procedure of one of the bicycle hydraulic devices can be added and/or an appropriate assembly procedure of one of the bicycle hydraulic devices can be selected.

According to a fourth aspect of the present invention, the bicycle hydraulic device according to any one of the above aspects further includes a piston movably provided in the hydraulic inner diameter so as to be removable from the second opening.

Using the bicycle hydraulic device according to the fourth aspect, the piston can be inserted from the second opening to assemble the bicycle hydraulic device. Therefore, the design of the insert part and the cover member can be improved By degree.

According to a fifth aspect of the present invention, the bicycle hydraulic device according to any of the above aspects is configured such that the insertion portion includes a first surface extending along a plane facing the second end. The cover member may contact the first surface.

With the bicycle hydraulic device according to the fifth aspect, the first surface of the insertion portion can be used to receive a hydraulic pressure applied to the cover member. Therefore, the structure of the bicycle hydraulic device can be further simplified.

According to a sixth aspect of the present invention, the bicycle hydraulic device according to any of the above aspects is configured such that the hydraulic inner diameter defines a central axis. The plane containing the first surface is perpendicular to the central axis.

By using the bicycle hydraulic device according to the sixth aspect, the first surface of the insertion portion can be effectively used to receive the hydraulic pressure applied to the cover member.

According to a seventh aspect of the present invention, the bicycle hydraulic device according to any one of the above aspects is configured such that the insertion portion includes a second surface spaced from the first surface to face the first surface.

Using the bicycle hydraulic device according to the seventh aspect, a space can be defined to arrange the cover member between the first surface and the second surface.

According to an eighth aspect of the present invention, the bicycle hydraulic device according to any one of the above aspects is configured such that the hydraulic inner diameter extends in an axial direction along a central axis. When viewed from the axial direction, the second surface faces the first surface without being offset from the first surface.

Using the bicycle hydraulic device according to the eighth aspect can make the insertion part compact.

According to a ninth aspect of the present invention, the bicycle hydraulic device according to any one of the above aspects is configured such that the second surface has a protrusion extending toward the first surface.

With the bicycle hydraulic device according to the ninth aspect, the cover member can be held between the first surface and the second surface by using the protrusion.

According to a tenth aspect of the present invention, the bicycle hydraulic device according to any one of the above aspects is configured such that the cover member is at least partially provided between the first surface and the second surface.

By using the bicycle hydraulic device according to the tenth aspect, the cover member can be held between the first surface and the second surface.

According to an eleventh aspect of the present invention, the bicycle hydraulic device according to any of the above aspects is configured such that the hydraulic inner diameter defines a central axis. The first surface extends around the central axis. The second surface extends around the central axis.

With the bicycle hydraulic device according to the eleventh aspect, it is possible to provide a space for arranging the cover member to make the insertion part compact.

According to a twelfth aspect of the present invention, the bicycle hydraulic device according to any one of the above aspects is configured such that the insertion portion includes a third surface connecting the second surface to the first surface. The first surface, the second surface, and the third surface define a slot with the insertion opening.

Using the bicycle hydraulic device according to the twelfth aspect, the cover member can be surely held in the slot.

According to a thirteenth aspect of the present invention, the bicycle hydraulic device according to any of the above aspects further includes a sealing member provided in the hydraulic inner diameter between the cover member and the second end.

Using the bicycle hydraulic device according to the thirteenth aspect, the sealing member can improve a sealing performance between the hydraulic inner diameter and the cover member.

According to a fourteenth aspect of the present invention, a bicycle hydraulic pressure according to any of the above aspects The device is configured such that the sealing member includes a main body and a sealing element. The main body is coupled to the cover member. The seal is provided on the main body to contact an inner peripheral surface of the hydraulic inner diameter.

Using the bicycle hydraulic device according to the fourteenth aspect, the cover member and the main body can stabilize the position of the seal relative to the hydraulic inner diameter. This can effectively improve the sealing performance between the hydraulic inner diameter and the cover member.

According to a fifteenth aspect of the present invention, the bicycle hydraulic device according to any of the above aspects is configured such that the sealing member includes a restricting member that is engaged with the cover member to restrict the main body and the cover member. Move relative to each other.

Using the bicycle hydraulic device according to the fifteenth aspect, the restriction member can stabilize the orientation of the main body relative to one of the cover members. This can further effectively improve the sealing performance between the hydraulic inner diameter and the cover member.

According to a sixteenth aspect of the present invention, the bicycle hydraulic device according to any one of the above aspects is configured such that the cover member includes an engagement opening. The restricting member is provided in the joint opening.

Using the bicycle hydraulic device according to the sixteenth aspect, the orientation of the main body relative to the cover member can be stabilized by a simple structure such as an engagement opening and a restricting member.

According to a seventeenth aspect of the present invention, the bicycle hydraulic device according to any one of the above aspects further includes a coupling member that couples the main body to the cover member.

Using the bicycle hydraulic device according to the seventeenth aspect, the coupling member can stabilize the orientation of the main body relative to one of the cover members. This can further effectively improve the sealing performance between the hydraulic inner diameter and the cover member.

According to an eighteenth aspect of the present invention, the bicycle hydraulic device according to any of the above aspects further includes a stopper attached to the base member to restrict the cover member and the base One of the components moves relative to each other.

Using the bicycle hydraulic device according to the eighteenth aspect, the cover member can be restricted to prevent it from being accidentally removed from the insertion part.

According to a nineteenth aspect of the present invention, the bicycle hydraulic device according to any of the above aspects is configured such that the base member includes a fluid channel connected to the hydraulic inner diameter. One end of the fluid channel is closed by the stopper.

Using the bicycle hydraulic device according to the nineteenth aspect, the stopper can be used as a closing element at the end of the fluid passage. This can simplify the structure of the bicycle hydraulic device by restricting the cover member to prevent it from being unintentionally removed from the insertion part.

According to a twentieth aspect of the present invention, a bicycle hydraulic device includes a base member, a piston, a cover member, and a sealing member. The base member is configured to be mounted to a bicycle body. The base member contains a hydraulic inner diameter. The hydraulic inner diameter has a first end and a second end. The first end defines a first opening. The second end defines a second opening. The piston is movably provided in the hydraulic inner diameter so as to be removable from the second opening. The cover member is provided on the base member to define a hydraulic chamber in the hydraulic inner diameter between the cover member and the piston. The sealing member is provided in the hydraulic inner diameter between the cover member and the piston. The sealing member is attachable and detachably coupled to the cover member.

By using the bicycle hydraulic device according to the twentieth aspect, the structure of the bicycle hydraulic device can be simplified by using the cover member and the sealing member.

10: Bicycle hydraulic device

12: Base member

12A: The first end of the base member

12B: The second end of the base member

12C: The grip part of the base member

12D: Installation surface of the second end

12E: Saddle bridge at the first end

14: installation clip

15: Grip cover

16: control component

18: The base part of the control component

20: The control part of the control component

22: pivot pin

24: additional pivot pin

26: Additional control components

28: The first bias member

30: second biasing member

32: third biasing member

34: Hydraulic inner diameter

34A: The first end of the hydraulic inner diameter

34B: The second end of the hydraulic inner diameter

34C: The inner peripheral surface of the hydraulic inner diameter

34C1: Cylindrical inner surface of inner peripheral surface

34C2: Inclined inner surface of inner peripheral surface

36: hydraulic cylinder

36A: The first opening of the hydraulic cylinder

36B: The second opening of the hydraulic cylinder

38: Piston

40: hydraulic chamber

44: Piston rod

46: guide pin

46A: End of guide pin

46B: End of guide pin

48: Guiding member

48A: Guide groove

48B: Guide groove

48C: Additional adjustment threaded holes

48D: Fastener

49: Support shaft

50: Transmission component

50A: the first transmission end

50B: second transmission end

50C: Adjust the threaded hole

51: Adjustment member

51A: The external threaded part of the adjustment member

51B: The adjustment end of the adjustment member

52: Additional adjustment components

54: adjustment screw

56: Adjust the contact part

57: Adjust the bias component

58: hydraulic oil tank

59: storage chamber

60: storage tank

60A: Groove of storage tank

60B: The hole of the storage tank

60C: The attachment surface of the storage tank

60D: Reservoir opening

62: partition

64: Hydraulic oil tank cover

65: Fastener

67: discharge member

68: fluid channel

68A: End of fluid channel

70: Exit

72: Insert part

72A: Insert opening

72B: The first surface of the insertion part

72C: The second surface of the insertion part

72C1: The protrusion of the second surface

72C2: The protrusion of the second surface

72D: The third surface of the insertion part

74: cover member

74A: Joint opening of cover member

74B: Middle through hole of cover member

78: Slot

80: Sealing member

82: The main body of the sealing member

82A: Peripheral surface outside the main body

82A1: The cylindrical outer surface of the main body

82A2: The inclined outer surface of the main body

82B: Ring groove of the main body

82C: The threaded hole of the main body

82D: The first axial end of the main body

82E: The second axial end of the main body

84: Seals of sealing components

86: Restricting part of sealing member

88: Coupling component

88A: The head part of the coupling member

88B: External threaded part of coupling member

90: stop

90A: Stopper body

90B: Rod body of stopper

92: gear unit

94: Cable control component

A1: pivot axis

A2: Additional pivot axis

A3: Central axis

A7: Cable control shaft

A61: The first central axis of the first connecting hole

A62: The second central axis of the second connecting hole

B: Bicycle body

BC1: Hydraulic bicycle components

BC2: Additional bicycle components/shifting device

C1: Hydraulic hose

C2: Mechanical control cable

CH1: The first connecting hole of the hydraulic oil tank

CH2: The second connecting hole of the hydraulic oil tank

D1: First control direction

D2: Second control direction

D3: axial direction

D4: Insertion direction

D5: vertical direction

D6: horizontal direction

D7: adjust direction

H: Handle

H1: The curved part of the handle

H1A: Peripheral surface outside the curved part

L11: The first outer diameter of the first axial end

L12: The second outer diameter of the second axial end

L21: The first inner diameter of the first opening

L22: The second inner diameter of the second opening

P11: first rest position

P12: First control position

P21: Second rest position

P22: Second control position

P31: Third resting position

P32: Third control position

P41: Initial position of the piston

P42: Actuating position of the piston

PL: plane

When considered in conjunction with the accompanying drawings, by referring to the following detailed description, it will be easy to obtain a more comprehensive understanding of the present invention and one of its many accompanying advantages.

Fig. 1 is a right side view of a bicycle hydraulic device according to a first embodiment.

Figure 2 is a perspective view of the bicycle hydraulic device shown in Figure 1;

Figure 3 is a front view of the bicycle hydraulic device shown in Figure 1;

Fig. 4 is a partial cross-sectional view of the bicycle hydraulic device taken along the line IV-IV of Fig. 3.

Figure 5 is a rear view of the bicycle hydraulic device shown in Figure 1;

Fig. 6 is a partial enlarged cross-sectional view of the bicycle hydraulic device shown in Fig. 1.

Fig. 7 is a perspective view of an internal structure of the bicycle hydraulic device shown in Fig. 1.

Fig. 8 is another perspective view of the internal structure of the bicycle hydraulic device shown in Fig. 1.

Fig. 9 is another perspective view of the internal structure of the bicycle hydraulic device shown in Fig. 1.

Fig. 10 is a cross-sectional view of the bicycle hydraulic device shown in Fig. 1.

Fig. 11 is a cross-sectional view of the bicycle hydraulic device taken along the line XI-XI of Fig. 4.

Fig. 12 is a perspective view of the bicycle hydraulic device shown in Fig. 1 without a grip cover.

Figure 13 is a cross-sectional view of the bicycle hydraulic device taken along the line XIII-XIII of Figure 6.

Figure 14 is a cross-sectional view of the bicycle hydraulic device taken along the line XIV-XIV of Figure 6.

Figure 15 is a cross-sectional view of the bicycle hydraulic device taken along the line XV-XV of Figure 4.

Figure 16 is a cross-sectional view of the bicycle hydraulic device taken along the line XVI-XVI of Figure 4;

Figure 17 is a partially exploded perspective view of the bicycle hydraulic device shown in Figure 1 with the handle cover omitted.

Figure 18 is a partial perspective view of the bicycle hydraulic device shown in Figure 1 with the handle cover omitted.

Figure 19 is an enlarged cross-sectional view of a part of the bicycle hydraulic device shown in Figure 1;

Fig. 20 is a cross-sectional view of the bicycle hydraulic device taken along the line XX-XX of Fig. 19 omitting the handle cover and a cover member.

Figure 21 is a bicycle fluid obtained along the line XXI-XXI of Figure 19 with the handle cover and cover member omitted A cross-sectional view of a pressure device.

Figure 22 is a partial cross-sectional and exploded perspective view of the bicycle hydraulic device shown in Figure 1 with the handle cover omitted.

Figure 23 is a partial plan view of the bicycle hydraulic device shown in Figure 1 taken along an axial direction with the handle sleeve omitted.

24 is an exploded perspective view of the cover member, a sealing member, and a coupling member of the bicycle hydraulic device shown in FIG. 1.

The embodiment(s) will now be described with reference to the accompanying drawings, in which like element symbols indicate corresponding or identical elements throughout the various views.

First embodiment

Initially referring to FIG. 1, a bicycle hydraulic device 10 according to a first embodiment is configured to be mounted to a bicycle body B. For example, the bicycle body B includes a handle H, a bicycle frame (not shown), a rod (not shown), and a tube (not shown). In this embodiment, the bicycle hydraulic device 10 is configured to be mounted to the handle H. Specifically, the bicycle hydraulic device 10 is configured to be mounted to a lower-bend handlebar. However, the bicycle hydraulic device 10 can be installed on other types of handlebars, such as a tie handlebar, a time trial handlebar, and a horn handlebar. The handle H can also be called a downward-curved handle H. In addition, the bicycle hydraulic device 10 may be installed to the bicycle body B except for the handle H. Since the structure of the bicycle body B is known in the bicycle field, it will not be described in detail here for the sake of brevity.

The bicycle hydraulic device 10 is operably coupled to a hydraulic bicycle component BC1, such as a hydraulic bicycle brake. In this embodiment, the bicycle hydraulic device 10 is operably coupled to the hydraulic bicycle component BC1 via a hydraulic hose C1.

In addition, the bicycle hydraulic device 10 is operably coupled to an additional bicycle component BC2. In this embodiment, the bicycle hydraulic device 10 is operably coupled to the additional bicycle component BC2 via a mechanical control cable C2. Examples of additional bicycle components BC2 include a gear shifter, an adjustable seat tube assembly, and a bicycle suspension. An example of the mechanical control cable C2 includes a Bowden cable. In this embodiment, the additional bicycle component BC2 includes a speed change device to change a speed level of the bicycle. The additional bicycle component BC2 can also be referred to as a shifting device BC2.

In this embodiment, the bicycle hydraulic device 10 is a right-hand side control device that is configured to be controlled by the rider's right hand to actuate the hydraulic bicycle component BC1 and the additional bicycle component BC2. However, the structure of the bicycle hydraulic device 10 can be applied to a left-hand side control device.

In this application, the following directional terms "front", "back", "forward", "backward", "left", "right", "horizontal", "up" and "down" and any other similar The direction term refers to a direction determined based on a user (for example, a rider) sitting on a seat (not shown) of a bicycle facing the handlebar H. Therefore, the terms used to describe the bicycle hydraulic device 10 should be interpreted relative to a bicycle equipped with the bicycle hydraulic device 10 used in an upright riding position on a horizontal surface.

As seen in FIG. 1, the bicycle hydraulic device 10 includes a base member 12. The base member 12 is configured to be mounted to the bicycle body B. In this embodiment, the base member 12 is configured to be mounted to the handle H of the bicycle body B. However, the base member 12 may be installed to a part of the bicycle body B except for the handle H. The base member 12 includes a first end 12A, a second end 12B, and a gripping portion 12C. The second end 12B is opposite to the first end 12A and is configured to be mounted to the bicycle body B. The gripping portion 12C is provided between the first end 12A and the second end 12B. The base member 12 extends between the first end 12A and the second end 12B.

The downward-curved handle H includes a curved portion H1. The second end 12B is configured to be coupled to the curved portion H1 in an installation state in which the bicycle hydraulic device 10 is installed to the handle H. The bicycle hydraulic device 10 includes a mounting clip 14 to clamp the handle H between the base member 12 and the mounting clip 14.

As seen in FIG. 2, the second end 12B includes a mounting surface 12D having a curved shape corresponding to the downward-curved handle H. Specifically, the mounting surface 12D has a curved shape corresponding to the outer peripheral surface H1A of one of the curved portions H1.

As seen in Figures 1 and 2, the first end 12A includes a pommel portion 12E. The saddle bridge portion 12E extends diagonally upward from the gripping portion 12C. Optionally and/or as desired, the saddle bridge portion 12E can also be configured to be graspable.

The base member 12 is made of a non-metallic material (such as a resin material). In this embodiment, the base member 12 is made of a resin material. For example, the base member 12 is made of synthetic resin. The base member 12 is integrally formed by using integral molding. However, the base member 12 may be made of other materials (such as a metal material). For example, the base member 12 may be made of aluminum by using molding.

In this embodiment, the bicycle hydraulic device 10 further includes a handle sleeve 15 that is attached to the base member 12 to at least partially cover the base member 12. The grip cover 15 is at least partially made of an elastic material (such as rubber).

As seen in FIG. 1, the bicycle hydraulic device 10 includes a manipulation member 16 pivotally coupled to the base member 12 about a pivot axis A1. In the installed state of the bicycle hydraulic device 10, the control member 16 extends downward from the base member 12. In this embodiment, the manipulation member 16 can pivot relative to the base member 12 about the pivot axis A1 in a first manipulation direction D1. The manipulation member 16 is configured to be capable of a rest position P11 (hereinafter referred to as the first rest position P11) and a rest position P11 relative to the base member 12 Pivoting between the manipulation positions P12 (hereinafter, the first manipulation position P12). The first steering direction D1 defines a circumferential direction around the pivot axis A1. In this embodiment, the control member 16 is provided as a brake control lever that can pivot about the pivot axis A1.

In this application, the term "rest position" as used herein refers to a position where a movable part (such as the manipulation member 16) remains stationary in a state where the movable part is not manipulated by the user. The term "manipulation position" as used herein refers to a position where the movable part has been manipulated by the user to perform manipulation of the bicycle component.

As seen in FIG. 3, the manipulation member 16 can pivot relative to the base member 12 about the additional pivot axis A2 in a second manipulation direction D2. The manipulation member 16 can pivot relative to the base member 12 between a second rest position P21 and a second manipulation position P22. The second steering direction D2 defines a circumferential direction around the additional pivot axis A2. In this embodiment, the manipulation member 16 is provided as a shift lever that can pivot about the additional pivot axis A2. However, the function of the shift lever may be omitted from the control member 16.

As seen in FIGS. 1 and 3, the manipulation member 16 includes a base portion 18 and a manipulation portion 20. The base portion 18 is pivotally coupled to the base member 12 about a pivot axis A1. The manipulation portion 20 is pivotally provided on the base portion 18 about an additional pivot axis A2.

As seen in FIG. 4, the bicycle hydraulic device 10 includes a pivot pin 22 and an additional pivot pin 24. The pivot pin 22 defines a pivot axis A1. The additional pivot pin 24 defines an additional pivot axis A2. The base portion 18 is pivotally coupled to the base member 12 via a pivot pin 22. The manipulation part 20 is pivotally coupled to the base part 18 via an additional pivot pin 24.

As seen in FIGS. 1 and 5, the bicycle hydraulic device 10 further includes an additional control member 26. The additional control member 26 is pivotally provided on one of the control member 16 and the base member 12 about the additional pivot axis A2. In this embodiment, the additional control member 26 is provided on the control member 16 on. Specifically, the additional manipulation member 26 can pivot relative to the base member 12 about the additional pivot axis A2 in the second manipulation direction D2. The additional manipulation member 26 can pivot relative to the base member 12 between a third rest position P31 and a third manipulation position P32. The additional manipulation member 26 is pivotally coupled to the base portion 18 via an additional pivot pin 24. The additional manipulation member 26 can pivot about the additional pivot axis A2 with respect to the base portion 18. In this embodiment, the additional manipulation member 26 is provided as an additional shift lever that can pivot about the additional pivot axis A2. The additional control member 26 may be omitted from the bicycle hydraulic device 10.

As seen in FIG. 4, the bicycle hydraulic device 10 includes a first biasing member 28 that biases the manipulation member 16 relative to the base member 12 toward the first rest position P11 (FIG. 1). The first biasing member 28 is mounted on the pivot pin 22. In the stationary state of the manipulation member 16 in one of the first stationary positions P11, the base portion 18 is in contact with the base member 12. For example, the first biasing member 28 includes a torsion spring.

The bicycle hydraulic device 10 includes a second biasing member 30 which biases the manipulation member 16 relative to the base member 12 toward the second rest position P21 (FIG. 3 ). In this embodiment, the second biasing member 30 biases the manipulation portion 20 relative to the base portion 18 toward the second rest position P21 (FIG. 3). The second biasing member 30 is installed on the additional pivot pin 24. In a state where the manipulation portion 20 is in one of the second rest positions, the manipulation portion 20 is in contact with the base portion 18. For example, the second biasing member 30 includes a torsion spring.

The bicycle hydraulic device 10 includes a third biasing member 32 which biases the additional control member 26 relative to the base member 12 toward the third rest position P31 (FIG. 5 ). In this embodiment, the third biasing member 32 biases the additional manipulation member 26 relative to the manipulation member 16 (base portion 18) toward the third rest position P31 (FIG. 5). The third biasing member 32 is installed on the additional pivot pin 24. As seen in Figure 5, the control member 16 and the additional control member 26 are in the second rest position P21 and the In one of the three rest positions P31, the additional manipulation member 26 is in contact with the manipulation member 16 (manipulation portion 20). For example, the third biasing member 32 includes a torsion spring.

As seen in FIG. 6, the base member 12 includes a hydraulic inner diameter 34. The hydraulic inner diameter 34 has a first end 34A and a second end 34B. The first end 34A defines a first opening 36A. The second end 34B defines a second opening 36B. That is, the hydraulic inner diameter 34 includes a through hole. The hydraulic inner diameter 34 defines a central axis A3. The hydraulic inner diameter 34 extends between the first end 34A and the second end 34B in an axial direction D3 along the central axis A3. Specifically, the hydraulic inner diameter 34 extends between the first end 34A and the second end 34B in an axial direction D3 parallel to the central axis A3.

The bicycle hydraulic device 10 further includes a piston 38 movably provided in the hydraulic inner diameter 34 so as to be removable from the second opening 36B. The piston 38 defines one of the hydraulic chambers 40 in the hydraulic inner diameter 34. In response to the movement of the manipulation member 16 in the first manipulation direction D1, the piston 38 can move in the axial direction D3 relative to the base member 12. Specifically, the piston 38 is movable relative to the base member 12 between an initial position P41 and an actuation position P42. The initial position P41 corresponds to the first rest position P11 of the manipulation member 16 (FIG. 1). The actuation position P42 corresponds to the first manipulation position P12 of the manipulation member 16 (FIG. 2 ).

Specifically, in the rest state where the control member 16 is in the first rest position P11 (FIG. 1), the piston 38 is in the initial position P41. When the manipulation member 16 is in one of the first manipulation positions P12 (FIG. 1), the piston 38 is in the actuation position P42. The piston 38 is configured to be pushed from the initial position P41 to the actuation position P42 in response to the movement of the control member 16 from the first rest position P11 to the first control position P12 to supply a hydraulic pressure toward the at least one bicycle component BC1.

In an initial state of the piston 38 in one of the initial positions, the piston 38 extends through the second opening 36B. In the initial state of the piston 38, the piston 38 is closer to the second end 34B than the first end 34A.

As seen in FIGS. 4, 7 and 8, the bicycle hydraulic device 10 includes a piston rod 44, a guide pin 46, a guide member 48, a support shaft 49 and a transmission member 50. The piston rod 44 is operably coupled to the piston 38. The guide pin 46 is attached to the piston rod 44. The support shaft 49 couples the guide member 48 to the base member 12. The guide member 48 includes a pair of guide grooves 48A and 48B (48B is not shown in the drawings). Both ends 46A and 46B of the guide pin 46 are movably provided in the guide grooves 48A and 48B (48B is not shown in the drawings). At least one of the end 46A and the end 46B may include a roller. The first biasing member 28 biases the guide pin 46. The guide grooves 48A and 48B (48B are not shown in the drawings) change a leverage ratio defined between the manipulation member 16 and the piston 38. The lever ratio is defined as the ratio of one movement amount of the piston 38 to one pivot movement amount of the manipulation member 16. When the piston 38 moves from the initial position P41 to the actuation position P42 relative to the base member 12, the guide grooves 48A and 48B (48B are not shown in the drawings) gradually reduce the lever ratio.

In this embodiment, the piston 38, the piston rod 44, the guide pin 46, and the guide member 48 can be attached to and detached from the base member 12 as a single unit. The guiding member 48 is a separate member from the base member 12, and it is made of a metal material (such as a titanium alloy, a stainless steel, and an aluminum alloy). The guide member 48 is detachably attached to the base member 12 with a fastener 48D (FIG. 4).

As seen in FIG. 4, the transmission member 50 can pivot relative to the base member 12 about the pivot axis A1 to transmit the movement of the manipulation member 16 to the guide pin 46. The transmission member 50 includes a first transmission end 50A and a second transmission end 50B. The first transmission end 50A is in contact with the guide pin 46. The second transmission end 50B is arranged to be opposite to the first transmission end 50A with respect to the pivot axis A1.

As seen in FIG. 9, the bicycle hydraulic device 10 includes an adjusting member 51. The adjustment member 51 is movably attached to the guide member 48. Specifically, the adjustment member 51 includes an external threaded portion 51A. The guiding member 48 includes an additional adjustment threaded hole 48C. The external threaded portion 51A is threadedly engaged with the additional adjustment threaded hole 48C. The adjusting member 51 includes an adjusting end 51B. Adjustment terminal 51B and The first transmission end 50A of the transmission member 50 contacts. For example, the adjusting end 51B of the adjusting member 51 has a tapered shape. The first biasing member 28 biases the guide pin 46 and the first transmission end 50A toward the adjustment end 51B of the adjustment member 51. The guide pin 46 and the first transmission end 50A are held between the first biasing member 28 and the adjustment end 51B of the adjustment member 51. This positions the piston 38 at the initial position P41 (Figure 4). In addition, the transmission member 50 is positioned at one of the pivot positions corresponding to the initial position P41 with respect to the guide member 48 and the base member 12.

The rotation of the adjusting member 51 relative to the guiding member 48 changes a position of the adjusting member 51 relative to the guiding member 48 in an adjustment direction D7 that is not parallel to the central axis A3 (FIG. 4) of the hydraulic inner diameter 34. Therefore, the rotation of the adjustment member 51 changes the initial position P41 of the piston 38 relative to the base member 12 (FIG. 4). In addition, the rotation of the adjustment member 51 changes the pivot position of the transmission member 50 relative to the base member 12.

As seen in FIG. 4, the bicycle hydraulic device 10 includes an additional adjustment member 52. The additional adjustment member 52 is rotatably attached to the second transmission end 50B. The additional adjustment member 52 includes an adjustment screw 54 and an adjustment contact portion 56. The transmission member 50 includes an adjustment threaded hole 50C disposed at the second transmission end 50B. The adjustment screw 54 is threadedly engaged with the adjustment screw hole 50C. The adjustment contact portion 56 is rotatably coupled to one end of the adjustment screw 54. The adjustment contact portion 56 is coupled to the base portion 18 to be restricted from rotating relative to the base portion 18.

As seen in FIG. 10, the bicycle hydraulic device 10 includes an adjustment biasing element 57 provided between the transmission member 50 and the base portion 18 to apply a biasing force to the transmission member 50 and the base portion 18. The adjustment biasing element 57 biases the transmission member 50 and the base portion 18 to push the base portion 18 against the adjustment contact portion 56.

As seen in FIG. 9, the rotation of the adjustment member 51 changes the pivot position of the transmission member 50 relative to the base member 12. Therefore, the rotation of the adjustment member 51 changes the control member 16 relative to the base member 12 of the first rest position P11. In addition, as seen in FIG. 4, the rotation of the adjusting screw 54 relative to the transmission member 50 changes a distance between the second transmission end 50B and the base portion 18, and changes the first stationary of the control member 16 relative to the base member 12 Location P11. At this time, the initial position P41 of the piston 38 does not change because the first transmission end 50A of the transmission member 50 is held between the guide pin 46 and the adjustment member 51 (FIG. 9).

As seen in FIG. 11, the bicycle hydraulic device 10 includes a hydraulic oil tank 58. The hydraulic oil tank 58 includes a storage chamber 59 connected to a hydraulic chamber 40 provided in the hydraulic inner diameter 34. As seen in Fig. 4, a hydraulic oil tank 58 is provided at the first end 12A (12A is not shown in Fig. 4). In this embodiment, as seen in FIGS. 11 and 12, the hydraulic oil tank 58 is provided at the saddle bridge portion 12E (12E is not shown in FIGS. 11 and 12).

The hydraulic oil tank 58 includes a storage tank 60, a partition 62 and a cover 64. The storage tank 60 includes a groove 60A. In this embodiment, the storage tank 60 is provided integrally with the hydraulic cylinder 36 as a one-piece integral component. However, the storage tank 60 may be a separate component from the hydraulic cylinder 36. The partition 62 is at least partially disposed in the groove 60A. The storage tank 60 and the partition 62 define the storage chamber 59 in the groove 60A. In this embodiment, the hydraulic oil tank 58 includes a drain member 67. The discharge member 67 is detachably attached to the storage tank 60 to close one of the holes 60B of the storage tank 60. The storage tank 60, the partition 62, and the discharge member 67 define the storage chamber 59 in the groove 60A. As seen in FIGS. 8 and 11, the cover 64 is detachably attached to the base member 12 with a fastener 65 to cover the groove 60A. The storage tank 60 includes an attachment surface 60C. The groove 60A includes a reservoir opening 60D provided on the attachment surface 60C. The storage opening 60D is covered with a partition 62. The cover 64 is attached to the attachment surface 60C to hold the partition 62 between the cover 64 and the attachment surface 60C. The hydraulic oil tank 58 may be omitted from the bicycle hydraulic device 10.

As seen in FIG. 13, the hydraulic oil tank 58 includes a first connection hole CH1 that connects the storage chamber 59 to the hydraulic chamber 40. The first connecting hole CH1 has a first central axis A61 and is along the first center The axis A61 extends. The first central axis A61 of the first connecting hole CH1 is inclined with respect to the attachment surface 60C of the storage tank 60. The first connection hole CH1 is not parallel to and not perpendicular to the attachment surface 60C. However, the configuration of the first connection hole CH1 is not limited to this embodiment.

As seen in FIG. 14, the hydraulic oil tank 58 includes a second connecting hole CH2 connecting the storage chamber 59 to the hydraulic chamber 40. Each of the second connecting holes CH2 has a second central axis A62 and extends along the second central axis A62. The second central axis A62 of the second connecting hole CH2 is inclined with respect to the attachment surface 60C of the storage tank 60. The second connection hole CH2 is not parallel to and not perpendicular to the attachment surface 60C. A second diameter of each of the second connecting holes CH2 is smaller than a first diameter of the first connecting hole CH1. However, the second diameter may be equal to or greater than the first diameter. The configuration of the second connecting hole CH2 is not limited to this embodiment. At least one of the second connecting holes CH2 may be omitted from the hydraulic oil tank 58. As seen in FIGS. 13 and 14, a first inclination angle system defined between the first central axis A61 and the attachment surface 60C and a second angle defined between the second central axis A62 and the attachment surface 60C The two tilt angles are equal. However, the first inclination angle may be different from the second inclination angle.

As seen in FIGS. 4 and 11, in the installation state where the bicycle hydraulic device 10 is installed on the handlebar H (FIG. 1), the hydraulic inner diameter 34 is provided at least partially above the pivot axis A1. In the installed state, the storage chamber 59 is provided above the hydraulic inner diameter 34 and does not overlap with the hydraulic inner diameter 34 in a transverse direction D6 parallel to the pivot axis A1.

As seen in FIG. 15, the base member 12 includes a fluid passage 68 connected to the hydraulic inner diameter 34. The fluid channel 68 is provided inside the base member 12. As seen in FIG. 16, the base member 12 includes an outlet 70. The outlet 70 is connected to the fluid channel 68 and is provided at the second end 12B. A fluid passage 68 is defined from the hydraulic chamber 40 to the outlet 70. The hydraulic hose C1 is connected to the hydraulic chamber 40 via an outlet 70. One end of the hydraulic hose C1 is connected to the outlet 70.

As seen in Fig. 6, the base member 12 includes a base member 12 provided between a first end 34A and a second end 34B One is inserted into part 72. The insertion portion 72 is provided closer to the first end 34A than the second end 34B. As seen in Fig. 17, the insertion portion 72 includes an insertion opening 72A. The insertion opening 72A is different from the first opening 36A. The insertion opening 72A is different from the second opening 36B (FIG. 6).

As seen in FIGS. 18 and 19, the bicycle hydraulic device 10 includes a cover member 74. The cover member 74 is provided at the insertion portion 72 via the insertion opening 72A to cover the hydraulic inner diameter 34. The cover member 74 is provided on the base member 12 to define a hydraulic chamber 40 in the hydraulic inner diameter 34 between the cover member 74 and the piston 38.

As seen in FIG. 19, the insertion portion 72 includes a first surface 72B extending along a plane PL facing the second end 34B (FIG. 6). The cover member 74 can be in contact with the first surface 72B. The plane PL including the first surface 72B is perpendicular to the central axis A3. The insertion portion 72 includes a second surface 72C that is spaced apart from the first surface 72B to face the first surface 72B. The cover member 74 is at least partially provided between the first surface 72B and the second surface 72C. The cover member 74 can be in contact with the second surface 72C. The insertion portion 72 restricts the movement of the cover member 74 relative to the base member 12 in one of the axial directions D3. In this embodiment, the insertion portion 72 is provided integrally with the base member 12 as a one-piece integral member. However, the insertion part 72 may be a separate member from the base member 12.

As seen in Fig. 20, the first surface 72B extends around the central axis A3. The first surface 72B extends around the hydraulic inner diameter 34 when viewed from the axial direction D3 parallel to the central axis A3. When viewed from the axial direction D3 parallel to the central axis A3, the first surface 72B has a substantially annular shape and surrounds the hydraulic inner diameter 34. However, the shape of the first surface 72B is not limited to this embodiment.

As seen in Fig. 21, the second surface 72C extends around the central axis A3. The second surface 72C extends around the hydraulic inner diameter 34 when viewed from the axial direction D3 parallel to the central axis A3. When viewed from the axial direction D3 parallel to the central axis A3, the second surface 72C has a substantially annular shape and surrounds the hydraulic inner diameter 34. However, the shape of the second surface 72C is not limited to this embodiment.

As seen in FIG. 19, the second surface 72C has a protrusion extending toward the first surface 72B. In this embodiment, the second surface 72C has protrusions 72C1 and 72C2 extending toward the first surface 72B. However, at least one of the protrusions 72C1 and 72C2 may be omitted from the second surface 72C. The cover member 74 can be in contact with at least one of the protrusions 72C1 and 72C2.

As seen in FIGS. 21 and 22, the protrusions 72C1 and 72C2 linearly extend toward the insertion opening 72A. The protrusions 72C1 and 72C2 extend in an insertion direction D4 perpendicular to the central axis A3. The protrusion 72C1 is spaced apart from the protrusion 72C2 in a vertical direction D5 which is perpendicular to the central axis A3 and the insertion direction D4. The protrusion 72C1 is provided on an opposite side of the protrusion 72C2 with respect to the central axis A3. In this embodiment, the insertion direction D4 is parallel to the transverse direction D6. However, the insertion direction D4 may be defined as a direction different from the axial direction D3.

As seen in Fig. 23, when viewed from the axial direction D3 parallel to the central axis A3, the second surface 72C faces the first surface 72B without being offset from the first surface 72B. When viewed from the axial direction D3, the second surface 72C has a shape that is substantially the same as that of the first surface 72B. In this embodiment, the first surface 72B has a first area, and the second surface 72C has a second area larger than the first area. However, when viewed from the axial direction D3, the shape of the second surface 72C may be exactly the same as the shape of the first surface 72B. In addition, when viewed from the axial direction D3, the shape of the second surface 72C may be completely different from the shape of the first surface 72B.

As seen in FIG. 19, the insertion portion 72 includes a third surface 72D that connects the second surface 72C to the first surface 72B. The first surface 72B, the second surface 72C, and the third surface 72D define a slot 78 having an insertion opening 72A (FIG. 17). In this embodiment, the third surface 72D is parallel to the central axis A3. However, the third surface 72D may not be parallel to the central axis A3.

As seen in FIG. 17, the cover member 74 can be inserted into and removed from the slot 78 in the insertion direction D4 through the insertion opening 72A. The slot 78 extends from the insertion opening 72A in the insertion direction D4 stretch. The slot 78 is roughly C-shaped. However, the shape of the slot 78 is not limited to this embodiment.

As seen in FIG. 6, the bicycle hydraulic device 10 further includes a sealing member 80 provided in the hydraulic inner diameter 34 between the cover member 74 and the second end 34B. As seen in FIG. 24, the sealing member 80 is coupled to the cover member 74 via attachable and detachable ground. The sealing member 80 includes a main body 82 and a sealing element 84. The main body 82 is coupled to the cover member 74. As seen in FIG. 19, a seal 84 is provided on the main body 82 to be in contact with an inner peripheral surface 34C of the hydraulic inner diameter 34. The main body 82 includes an outer peripheral surface 82A and an annular groove 82B provided on the outer peripheral surface 82A. The seal 84 is provided in the annular groove 82B. In this embodiment, the main body 82 is made of a non-metallic material (such as a resin material). The sealing member 84 is a separate member from the main body 82, and it is made of an elastic material (such as rubber). However, the seal 84 may be provided integrally with the main body 82 as a one-piece unitary member.

As seen in FIGS. 23 and 24, the sealing member 80 includes a restricting member 86 that is engaged with the cover member 74 to restrict the relative movement of one of the main body 82 and the cover member 74. The cover member 74 includes an engaging opening 74A. The restricting member 86 is provided in the engaging opening 74A. In this embodiment, in a state where the cover member 74 is placed at the insertion portion 72, the engagement opening 74A extends in the insertion direction D4.

As seen in FIGS. 19 and 24, the bicycle hydraulic device 10 further includes a coupling member 88. The coupling member 88 couples the sealing member 80 to the cover member 74. Specifically, the coupling member 88 couples the main body 82 to the cover member 74. In this embodiment, the coupling member 88 includes a fastener, such as a screw. The coupling member 88 includes a head portion 88A and an external thread portion 88B. The external thread portion 88B extends from the head portion 88A and has an outer diameter smaller than the outer diameter of the head portion 88A. The main body 82 includes a threaded hole 82C. The male threaded portion 88B is threadedly engaged with the threaded hole 82C. The cover member 74 includes a middle through hole 74B. The sealing member 80 is coupled to the cover member In one state of 74, the coupling member 88 extends through the middle through hole 74B. One of the inner diameters of the middle through holes 74B is smaller than the outer diameter of the head portion 88A and larger than the outer diameter of the external thread portion 88B. The cover member 74 is held between the head portion 88A and the sealing member 80.

As seen in FIG. 19, the main body 82 includes a first axial end 82D and a second axial end 82E. The main body 82 extends between the first axial end 82D and the second axial end 82E. In a state where the sealing member 80 is provided in one of the hydraulic inner diameters 34, the first axial end 82D is closer to the first end 34A of the hydraulic inner diameter 34 than the second axial end 82E. The cover member 74 is coupled to the first axial end 82D with a coupling member 88.

The first axial end 82D has a first outer diameter L11. The second axial end 82E has a second outer diameter L12. In this embodiment, the first outer diameter L11 is greater than the second outer diameter L12. The first outer diameter L11 is one of the largest outer diameters of the main body 82. However, the first outer diameter L11 may be equal to or smaller than the second outer diameter L12.

As seen in FIG. 6, the first opening 36A has a first inner diameter L21. The second opening 36B has a second inner diameter L22. In this embodiment, the first inner diameter L21 is greater than the second inner diameter L22. However, the first inner diameter L21 may be equal to or smaller than the second inner diameter L22.

As seen in Fig. 19, the first outer diameter L11 is equal to the first inner diameter L21 and greater than the second inner diameter L22. The sealing member 80 is inserted into the hydraulic inner diameter 34 from the first opening 36A before the cover member 74 is inserted into the slot 78.

The outer peripheral surface 82A of the main body 82 includes a cylindrical outer surface 82A1 and an inclined outer surface 82A2. The cylindrical outer surface 82A1 extends in the axial direction D3 from the second axial end 82E toward the first axial end 82D. The annular groove 82B is provided on the cylindrical outer surface 82A1. The inclined outer surface 82A2 is inclined with respect to the central axis A3 so that an outer diameter of the main body 82 gradually increases from the cylindrical outer surface 82A1 to the first axial end 82D.

The inner peripheral surface 34C of the hydraulic inner diameter 34 includes a cylindrical inner surface 34C1 and an inclined inner surface 34C2. The cylindrical inner surface 34C1 extends in the axial direction D3 from the second end 34B toward the first end 34A. The inclined inner surface 34C2 can contact the inclined outer surface 82A2 of the main body 82. The inclined inner surface 34C2 is inclined with respect to the central axis A3 so that one of the inner diameters of the hydraulic inner diameter 34 gradually increases from the cylindrical inner surface 34C1 toward the first end 34A. Specifically, the inclined inner surface 34C2 is inclined with respect to the central axis A3 so that the inner diameter of the hydraulic inner diameter 34 gradually increases from the cylindrical inner surface 34C1 toward the second surface 72C of the insertion portion 72.

As seen in FIG. 18, the bicycle hydraulic device 10 further includes a stopper 90 attached to the base member 12 to restrict the relative movement of one of the cover member 74 and the base member 12. In this embodiment, the stopper 90 is attached to the base member 12 to restrict the movement of the cover member 74 relative to one of the base members 12 in the insertion direction D4. Specifically, the stopper 90 is attached to the base member 12 to prevent the cover member 74 from being inadvertently removed from the insertion portion 72.

As seen in FIG. 17, one end 68A of the fluid passage 68 is closed by a stopper 90. The stopper 90 includes a stopper body 90A and a rod 90B. The rod body 90B extends from the stopper body 90A and is provided in the end 68A of the fluid channel 68. The stopper body 90A has an outer diameter larger than an outer diameter of the rod body 90B. The stopper 90 may be in contact with the cover member 74. The cover member 74 can be removed from the hydraulic inner diameter 34 through the insertion opening 72A of the insertion portion 72 until the stopper 90 is attached to the base member 12.

For example, the stopper 90 is made of a resin material, and it is non-detachably connected to the base member 12 by melting the edges thereof and pressing them together when they are so heated. Therefore, in a use state of the bicycle hydraulic device 10, the stopper 90 cannot be detached from the base member 12 without being damaged. For example, the stopper 90 is irremovably connected to the base member 12 by using laser welding. However, the stopper 90 may be connected to the base member 12 by using another process.

As seen in FIGS. 7 and 8, the bicycle hydraulic device 10 further includes a shift unit 92 to control a shift device BC2. The speed change unit 92 includes a cable control member 94 that is pivotally provided on the base member 12 about a cable control shaft A7. One of the inner cables of the mechanical control cable C2 is coupled to the cable control member 94. In response to the movement of the manipulation member 16 and the additional manipulation member 26, the cable control member 94 pivots relative to the base member 12 about the cable control axis A7. The structure of the speed change unit 92 is known in the bicycle field, and will not be described in detail here for brevity. The transmission unit 92 may be omitted from the bicycle hydraulic device 10. In addition, the transmission unit 92 may include an electric switch (an upshift switch and/or a downshift switch) to replace the above-mentioned mechanical structure. In this embodiment, the electric switch is mounted to the control member 16, the base member 12 or another member. The electric switch can be connected to a bicycle component (for example, a bicycle transmission) via a wired connection, a wireless connection, or a combination thereof.

As used herein, the term "comprising" and its derivatives are intended to be open terms, which designate the existence of stated features, elements, components, groups, integers and/or steps, but do not exclude other unstated features and elements , Components, groups, integers and/or steps. This concept also applies to words with similar meanings, for example, the terms "have", "include" and their derivatives.

The terms "component", "section", "part", "part", "component", "body" and "structure" when used in the singular can have the dual meaning of a single part or plural parts.

The ordinal numbers described in this application (such as "first" and "second") are only identifiers and do not have any other meaning (for example, a specific order and the like). In addition, for example, the term “first element” does not imply the existence of a “second element”, and the term “second element” does not imply the existence of a “first element”.

In addition to a pair of elements having the same shape or configuration as each other, the term "pair" as used herein can also cover a configuration where the pair of elements have different shapes or structures from each other.

Finally, the terms of degree (such as "substantially", "about", and "approximately") as used herein mean a reasonable amount of deviation from one of the modified terms so that the final result is not significantly changed.

Obviously, many modifications and variations of the present invention are possible based on the above teachings. Therefore, it should be understood that within the scope of the appended application, the present invention can be practiced in other ways than specifically described herein.

10‧‧‧Bicycle hydraulic device

12‧‧‧Base member

12B‧‧‧The second end of the base member

12E‧‧‧Saddle bridge at the first end

14‧‧‧Mounting clip

15‧‧‧Grip cover

16‧‧‧Control components

18‧‧‧The base part of the control component

20‧‧‧The control part of the control component

22‧‧‧Pivot pin

24‧‧‧Additional pivot pin

26‧‧‧Additional control components

28‧‧‧First biasing member

32‧‧‧The third biasing member

34‧‧‧Hydraulic inner diameter

38‧‧‧Piston

40‧‧‧Hydraulic chamber

44‧‧‧Piston rod

46‧‧‧Guide Pin

48‧‧‧Guiding member

48D‧‧‧ Fastener

49‧‧‧Support shaft

50‧‧‧Transmission member

50A‧‧‧First transmission terminal

50B‧‧‧Second transmission terminal

50C‧‧‧Adjustment threaded hole

52‧‧‧Additional adjustment components

54‧‧‧Adjusting screw

56‧‧‧Adjust the contact part

58‧‧‧Hydraulic Oil Tank

70‧‧‧Exit

A1‧‧‧Pivot axis

A2‧‧‧Additional pivot axis

A3‧‧‧Central axis

D1‧‧‧First control direction

D4‧‧‧Insert direction

P41‧‧‧The initial position of the piston

P42‧‧‧Piston actuation position

Claims (20)

A bicycle hydraulic device, comprising: a base member configured to be mounted to a bicycle body, the base member including: a hydraulic inner diameter having a first end defining a first opening, And a second end; and an insertion portion provided between the first end and the second end, the insertion portion including an insertion opening different from the first opening; and a cover member through The insertion opening is provided at the insertion part to cover the hydraulic inner diameter. The bicycle hydraulic device of claim 1, wherein the insertion portion is provided closer to the first end than the second end. Such as the bicycle hydraulic device of claim 1, wherein the second end defines a second opening, and the insertion opening is different from the second opening. For example, the bicycle hydraulic device of claim 3, further includes a piston, which is movably provided in the hydraulic inner diameter so as to be removable from the second opening. The bicycle hydraulic device of claim 1, wherein the insertion part includes a first surface extending along a plane facing the second end, and the cover member can contact the first surface. Such as the bicycle hydraulic device of claim 5, wherein the hydraulic inner diameter defines a central axis, and the plane including the first surface is perpendicular to the central axis. The bicycle hydraulic device of claim 5, wherein the insertion portion includes a second surface spaced apart from the first surface to face the first surface. For example, the bicycle hydraulic device of claim 7, wherein the hydraulic inner diameter extends in an axial direction along a central axis, and when viewed from the axial direction, the second surface faces the first surface and not from the first surface A surface offset. The bicycle hydraulic device of claim 7, wherein the second surface has a protrusion extending toward the first surface. Such as the bicycle hydraulic device of claim 7, wherein the cover member is at least partially provided between the first surface and the second surface. Such as the bicycle hydraulic device of claim 7, wherein the hydraulic inner diameter defines a central axis, the first surface extends around the central axis, and the second surface extends around the central axis. For example, the bicycle hydraulic device of claim 7, wherein the insertion portion includes a third surface that connects the second surface to the first surface, and the first surface, the second surface, and the third surface define the insertion portion One of the opening slots. For example, the bicycle hydraulic device of claim 1, further comprising a sealing member provided in the hydraulic inner diameter between the cover member and the second end. The bicycle hydraulic device of claim 13, wherein the sealing member includes a main body coupled to the cover member, and a sealing member provided on the main body to contact an inner peripheral surface of the hydraulic inner diameter. Such as the bicycle hydraulic device of claim 14, wherein the sealing member includes a restricting member that is engaged with the cover member to restrict relative movement between the main body and the cover member. Such as the bicycle hydraulic device of claim 15, wherein the cover member includes an engaging opening, and the restricting member is provided in the engaging opening. For example, the bicycle hydraulic device of claim 14, further comprising a coupling member that couples the main body to the cover member. For example, the bicycle hydraulic device of claim 1, further comprising a stopper attached to the base member to restrict the relative movement of one of the cover member and the base member. The bicycle hydraulic device of claim 18, wherein the base member includes a fluid channel connected to the hydraulic inner diameter, and one end of the fluid channel is closed by the stopper. A bicycle hydraulic device, comprising: a base member configured to be mounted to a bicycle body, the base member including a hydraulic inner diameter, the hydraulic inner diameter having a first end, which defines a first An opening, and a second end, which define a second opening; a piston, which is movably provided in the hydraulic inner diameter so as to be removable from the second opening; a cover member, which is provided in the On the base member to define a hydraulic chamber in the hydraulic inner diameter between the cover member and the piston; and a sealing member provided in the hydraulic chamber between the cover member and the piston , The sealing member is attachable and detachably coupled to the cover member.

Images