초록 ▼

The present invention relates to a brake device for a bike, and more particularly to an antilock disc brake device, which is mounted to the front/back fork of a bike, and includes a slider, plural steel balls, a fluted disc and a shaft pad. The present invention is not only capable of preventing the

The present invention relates to a brake device for a bike, and more particularly to an antilock disc brake device, which is mounted to the front/back fork of a bike, and includes a slider, plural steel balls, a fluted disc and a shaft pad. The present invention is not only capable of preventing the brake from locking up, but also it prevent unstable ride caused by a sudden brake at high speed.

대표청구항 ▼

1. An anti-lock disc brake device mounted on a fork of a bike and corresponds to disc brake;a positioning assembly screwed on the fork, and the positioning assembly defined with teeth;a slider, a base body of which reciprocating relative to the positioning assembly;a spring biased between the slider

1. An anti-lock disc brake device mounted on a fork of a bike and corresponds to disc brake;a positioning assembly screwed on the fork, and the positioning assembly defined with teeth;a slider, a base body of which reciprocating relative to the positioning assembly;a spring biased between the slider and the positioning assembly;a braking assembly comprising brake pad, shaft pad, plural steel balls and fluted disc, the braking assembly disposed in the slider, the brake pad corresponds to surface of the disc brake, a side surface of the shaft pad defined with plural slots, each of the plural slots formed with shallow end and deep end which used to cooperate with the steel balls respectively, a drive shaft provided at the same side of the shaft pad and rotatably protruding out of the slider, the fluted disc defined with teeth for meshing with the teeth of the positioning assembly, a side of the fluted disc formed with plural cavities for receiving the steel balls;a rock-arm assembly comprising a steel wire and a rock arm, the drive shaft of the braking assembly disposed at an end of the rock arm, the steel wire fixed to another end of the rock arm.2. An anti-lock disc brake device comprising:a positioning assembly defined with teeth;a slider, a base body of which laterally defined with a through hole, at a side of the through hole formed with a first gap and a second gap; the second gap corresponds to the teeth of the positioning assembly, the first gap serving to receive a brake disc, at an outer periphery of the base body is provided with an arm;a spring biased between the base body of the slider and the positioning assembly;a braking assembly including a first braking unit and a second braking unit, the first braking unit disposed at a first side of the through hole of the slider, a brake pad of the first braking unit corresponds to a first side of the brake disc, the second braking unit disposed at a second side of the through hole of the slider, the second braking unit comprising a brake pad, a retainer, a dust washer, a shaft pad, plural steel balls, a fluted disc, a plural steel balls and a wearing gasket, the brake pad of the second braking unit corresponds to the second side of the brake disc, the shaft pad provided at a side surface thereof with plural teardrop shaped grooves, each of the teardrop shaped grooves has a wide deep end and a narrow shallow end, a drive shaft rotatably projecting out of the through hole of the slider, the plural steel balls received in the teardrop shaped grooves and located at one side of the fluted disc, the fluted disc further defined with plural cavities at another side thereof for receiving the steel balls, the wearing gasket corresponds to the steel balls in the cavities on another side of the fluted disc;a steel wire of a rock-arm assembly fixed to a another end of a rock arm after passing through the arm of the slider.3. The anti-lock disc brake device as claimed in claim 2 wherein:the positioning assembly comprises a positioning bracket and a toothed board, the positioning bracket is assembled with the toothed board and then screw on the fork, at a side of the toothed board are provided with two positioning covers which are disposed in an arc, the arc between the two positioning covers corresponds to an axis of the brake disc, the positioning covers are respectively defined with a receiving hole, and a back plate is disposed at a bottom of the receiving hole, plural teeth are formed at a mid portion of the toothed board for meshing with a toothed plate, the toothed plate is also defined with teeth, the teeth are disposed between the two positioning covers;the slider comprises the base body and two sliding sleeves respectively disposed at an upper side and a lower side of the base body, the sliding sleeves are respectively defined with a receiving base at an end thereof, the receiving base of the sliding sleeve at a lower end of the base body is interiorly provided with cushion, the two sliding sleeves can respectively slide into the two positioning covers of the positioning assembly;the spring, an end of which is received in the receiving base of the sliding sleeve at an upper end of the slider and another end of the spring abuts against the back plate of the positioning cover at an upper end of the positioning assembly;the braking assembly includes the first braking unit and the second braking unit, the first braking unit comprises the brake pad, a retainer, an abrasive piece and an adjust cover;the rock-arm assembly includes a steel wire, a rock arm, a cover and a spiral spring, the drive shaft of the braking assembly is disposed at an end of the rock arm after passing through the cover and the spiral spring.4. The anti-lock disc brake device as claimed in claim 2 wherein the positioning assembly is integrally formed, both ends of which are defined with sliding grooves, and limiting covers are used to position two sliding sleeves at both sides of the slider, the base body is additionally provided with a spring seat for the reception of an end of the spring and at a corresponding position of the positioning assembly is provided with another spring seat, such that the slider is able to reciprocate within the sliding grooves.5. The anti-lock disc brake device as claimed in claim 2, wherein the positioning assembly is provided with a rail and a slide cover, the base body can abut against and slide on the rail, the base body is additionally provided with a spring seat for reception of an end of the spring, and at a corresponding position of a toothed board is defined with another spring seat, such that the slider is able to reciprocate circularly within sliding grooves.6. The anti-lock disc brake device as claimed in claim 2, wherein the positioning assembly is integrally formed, which is provided at both ends thereof with two opposing slide shafts, the both ends of the base body of the slider are provided with ears which defined with arc apertures, the arc apertures of the ears at both ends of the base body are provided for the insertion of the slide shaft, such that the slider is able to circularly reciprocate within sliding grooves, the base body is additionally provided with a spring seat for the reception of an end of the spring and at a corresponding position of the positioning assembly is provided with another spring seat.7. The anti-lock disc brake device as claimed in claim 2, wherein the positioning assembly is integrally formed, two opposing T-shape arc grooves are defined at both ends of positioning covers, and two T-shape slide blocks are disposed at the end of the sliding sleeves at both ends of the base body which are used to insert in the T-shape arc grooves, by the cooperation of the T-shape arc grooves with the T-shape slide blocks, the base body can perform reciprocating circular movement in the T-shape arc grooves, the base body is additionally provided with a spring seat for the reception of an end of the spring and at a corresponding position of the positioning assembly is provided with another spring seat.8. The anti-lock disc brake device as claimed in claim 2, wherein the positioning assembly is integrally formed, a plate protrudes from a side of the base body of the slider and the plate is pivotally connected to an axis of the brake disc, by the cooperation of the plate with the axis of the brake disc, the base body can perform reciprocating circular movement in T-shape arc grooves, the base body is additionally provided with a spring seat for the reception of an end of the spring and at a corresponding position of the positioning assembly is provided with another spring seat.9. The anti-lock disc brake device as claimed in claim 2, wherein the positioning assembly is defined with a track which is interiorly provided with spring seats for positioning two springs, the base body of the slider is divided into a left half and a right half, the left half and the right half are correspondingly provided outside of the track and positioned at both sides of the track by taking advantage of a chute board in an arc groove, on inner surface of arc groove are provided with spring seats, by the cooperation of the track with the springs and the chute board, the base body is able to perform reciprocating circular movement.10. The anti-lock disc brake device as claimed in claim 2, wherein the positioning assembly is provided with a rail that is interiorly defined with recesses for the reception of the springs, in the recesses is further provided with spring seats that are used to position springs, the base body is defined with an arc hole, an arc-shape wearing sleeve is positioned between the arc hole and the rail by virtue of screw board, the screw board is defined with an abutting portion that is used to abut against a bottom of the recess of the rail, the springs are positioned by the spring seats and the abutting portion, the rail is confined in the arc hole, such that the base body has to circularly reciprocate.