Abstract: A bicycle braking and parking device includes a casing, two brake pads, a locking pin, and an electromagnetic driver. The casing has an accommodation space and two pistons located at two opposite sides of the accommodation space. The accommodation space can accommodate part of a brake disk. The brake pads are located at the accommodation space and located between the pistons. The pistons can push the brake pads, and the brake pads can clamp the brake disk. The locking pin is movably disposed on the casing. The electromagnetic driver can force the locking pin to move between a released position and a locked position. when the locking pin is in the released position, the locking pin is separated from the brake disk. When the locking pin is in the locked position, the locking pin is inserted into the brake disk to limit a motion of the brake disk.

Abstract: The disclosure provides a bicycle caliper including a casing assembly and a plurality of pistons. The casing assembly has a first fluid inlet, a second fluid inlet, a first fluid channel, a plurality of piston chambers, and a second fluid channel. The first fluid channel has a first connection opening and a second connection opening opposite to each other. The first connection opening and the second connection opening of the first fluid channel are respectively in fluid communication with the first fluid inlet and the second fluid inlet. The first fluid channel penetrates through the piston chambers. Two opposite openings of the second fluid channel are respectively in fluid communication with the first connection opening and the second connection opening of the first fluid channel, and the second fluid channel does not penetrate through the piston chambers. The pistons are respectively and movably disposed in the piston chambers.

Abstract: A bicycle braking and parking device includes a casing, two brake pads, a locking pin, and an electromagnetic driver. The casing has an accommodation space and two pistons located at two opposite sides of the accommodation space. The accommodation space can accommodate part of a brake disk. The brake pads are located at the accommodation space and located between the pistons. The pistons can push the brake pads, and the brake pads can clamp the brake disk. The locking pin is movably disposed on the casing. The electromagnetic driver can force the locking pin to move between a released position and a locked position. when the locking pin is in the released position, the locking pin is separated from the brake disk. When the locking pin is in the locked position, the locking pin is inserted into the brake disk to limit a motion of the brake disk.

Abstract: The disclosure provides a bicycle caliper including a casing assembly and a plurality of pistons. The casing assembly has a first fluid inlet, a second fluid inlet, a first fluid channel, a plurality of piston chambers, and a second fluid channel. The first fluid channel has a first connection opening and a second connection opening opposite to each other. The first connection opening and the second connection opening of the first fluid channel are respectively in fluid communication with the first fluid inlet and the second fluid inlet. The first fluid channel penetrates through the piston chambers. Two opposite openings of the second fluid channel are respectively in fluid communication with the first connection opening and the second connection opening of the first fluid channel, and the second fluid channel does not penetrate through the piston chambers. The pistons are respectively and movably disposed in the piston chambers.

Abstract: A bicycle braking system includes a lever assembly, a parking brake mechanism, and a positioning assembly. The lever assembly includes a housing and a brake lever pivotably disposed on the housing. The housing has a first positioning structure, and the brake lever has an engagement portion. The parking brake mechanism includes a control handle pivotably disposed on the housing so as to be engaged or disengaged with the engagement portion. The positioning assembly includes a positioning handle pivotably disposed on the control handle and having a locked position and an unlocked position. when the positioning handle is in the locked position, the positioning handle is positioned at the first positioning structure so as to stop the control handle from be pivoted with respect to the housing. When the positioning handle is in the unlocked position, the positioning handle is removed from the first positioning structure.

Abstract: The disclosure provides a bicycle braking system including a lever assembly, a parking brake mechanism, and a positioning assembly. The lever assembly includes a housing and a brake lever pivotably disposed on the housing. The housing has a first positioning structure, and the brake lever has an engagement portion. The parking brake mechanism includes a control handle pivotably disposed on the housing so as to be engaged or disengaged with the engagement portion. The positioning assembly includes a positioning handle pivotably disposed on the control handle and having a locked position and an unlocked position. when the positioning handle is in the locked position, the positioning handle is positioned at the first positioning structure so as to stop the control handle from be pivoted with respect to the housing. When the positioning handle is in the unlocked position, the positioning handle is removed from the first positioning structure.

Abstract: A hidden oil tube structure for a bicycle is disclosed. A brake body has a first and a second ends arranged oppositely. The first end is connected to a predetermined position of a handlebar of a bicycle. A lever is pivotably connected to the second end of the brake body. And an oil tube is connected to the brake body and arranged inside the handlebar totally or partially exposed outside the handlebar.

Abstract: A hydraulic brake master cylinder is provided. The end of the movable barrel away from the outer convex ring is spaced apart or against the first inner convex flange and to adjust the location of one of two flow-through holes to make the use of brake not be influenced by the oil and air inside the first cylinder while rotating the movable barrel through the disposed outer convex ring. Two elastic plates are plugged in the inner conical portion, the outer convex ring between two ends of the inner connecting member is against the third inner convex flange adjacent to the fifth inner threaded portion, and two elastic plates are pressed by the inner conical portion to be fastened and passed through the second end cap, the second piston, the first piston, and the end of the two elastic plates with a brake cable in series.

Abstract: An oil stop device for connecting a hydraulic cable is provided with a needle being a hollow structure and detachably plugged in one end of the hydraulic cable, and an inner threaded portion formed inside the needle; a connecting member having an outer threaded portion extended toward one end thereof adjacent to the needle, and the outer threaded portion screwed with the inner threaded portion of the needle; and a first stop-leak ring sleeved on the outer threaded portion of the connecting member and located between the needle and the connecting member. It is easy to assemble and disassemble the hydraulic cable passed through the frame of the bicycle and the hydraulic brake. And further, it may simplify structure.

Abstract: A hydraulic brake master cylinder is provided. The end of the movable barrel away from the outer convex ring is spaced apart or against the first inner convex flange and to adjust the location of one of two flow-through holes to make the use of brake not be influenced by the oil and air inside the first cylinder while rotating the movable barrel through the disposed outer convex ring. Two elastic plates are plugged in the inner conical portion, the outer convex ring between two ends of the inner connecting member is against the third inner convex flange adjacent to the fifth inner threaded portion, and two elastic plates are pressed by the inner conical portion to be fastened and passed through the second end cap, the second piston, the first piston, and the end of the two elastic plates with a brake cable in series.

Abstract: A cable connection device of a bicycle is provided with an outer barrel, an inner connecting member, and a tube, wherein an outer thread is arranged at one end of the tube, and a cone portion is arranged inside the end of the tube having the outer thread and tapered inwardly; an inner thread arranged at one end of the outer barrel is screwed with the outer thread of the tube, and a flange is arranged inside the end of the outer barrel away from the inner thread; and two flexible latches of the inner connecting member are disposed inside the cone portion, and an outer convex ring arranged between two ends of the inner connecting member is against the flange adjacent to the inner thread. The flexible latches are compressed by the cone portion to fasten one end of a cable passed through the tube.