| 摘要 |
A disc brake device with an automatic clearance adjustment device 60 which reduces the dispersion of the brake clearance adjustment and eliminates the ineffective stroke of the lever 30 comprises thrust member 50, casing member 20, lever 30, automatic clearance adjustment device 60, and support member 40. The thrust member 50 is screw-engaging and thrusts a frictional pad 10,11. The lever 30 amplifies an external input and transfers it to the thrust member 50 via a force transferring member 34. The automatic clearance adjustment device 60 comprises an adjuster shaft 61 and a mechanism for transferring the adjuster shaft 61 rotation to an adjustment gear 51a in the thrust member 50, which automatically adjusts clearance between the frictional pad 10,11 and the rotor 1. The disc brake device further comprises a means 80 for biasing the automatic clearance adjuster while the lever 30 is on-stroking. The biasing means 80 may be between the casing member 20 and the automatic clearance adjustment device 60, and may have a C-shaped proximal portion (81, figure 9) with a pair of arms (82, figure 9) to abut the casing member 20, or a W-shaped spring member (90, figure 12) with a pair of arms (92, figure 12) to abut the thrust member 50. |
