Roller skate structure

Roller skate structure comprising a boot, two press rods, two locating seat assemblies and two roller seats, a front and a rear portions of bottom side of the boot being respectively formed with two cavities, a reinforcing plate being embedded in a top face of each cavity, each reinforcing plate being formed with locking holes, a front and a rear ends of the bottom face of the boot being provided with brake blocks, the locating seat assembly being composed of a locating seat, two nuts, a linking plate, a stop body, a compression spring, a torque spring, a pivot shaft and a C-shaped retainer ring, each of four corners of a locating board of the locating seat being formed with a locking hole, two pivot plates downward extending from bottom face of the locating seat to define therebetween a space, a middle portion of each pivot plate being formed with a pivot hole, one side of one pivot plate being provided with a projecting post, the pivot shaft being a two-step cylindrical member, the circumference of the large diameter section of the pivot shaft being formed with a spring hooking hole, the circumference of the small diameter section thereof being cut with a plane linking face, an inner end of the pivot shaft being formed with an annular retainer groove, the roller seat being composed of a pivot seat and two rollers pivotally connected with two sides of rear end of the pivot seat, a front end of the pivot seat being formed with a central transmission hole, a certain portion of the circumference of the front end of the pivot seat being formed with an insertion notch, said roller skate structure being characterized in that:

• a lateral side of the boot is formed with two through holes communicating with the cavities, each through hole having a diameter larger than the maximum diameter of the press rod;
• the press rod is two-stepped, a stop ring being retained around the outer circumference of the small diameter section of the press rod, an end of the press rod having an extending driving post formed with outer thread and having a minimum diameter of the press rod;
• the locating board of the locating seat is formed with an escape slot in the space, a lateral end of each pivot plate being formed with a stop through hole, the projecting post being formed with a slide through hole extending through the pivot plate;
• two ends of the linking plate are respectively formed with a driving hole and a driven hole;
• and
• the stop body includes a stop head and a driven post extending from the end face of the stop head, the driven post having smaller diameter and being formed with outer thread, whereby the roller seat is fitted between the two pivot plates of the locating seat and fixed connected with the pivot shaft, the torque spring being fitted on the pivot shaft, the pivot shaft being fitted into the pivot holes of the locating seat and the transmission hole of the roller seat, the locating seat being positioned in the cavity with the stop through hole aligned with the through hole of the boot, the compression spring being fitted on the press rod, the press rod with the compression spring being fitted into the through hole of the boot and the stop through hole of the locating seat and extending out of the outer pivot plate of the locating seat by a certain length, the stop head of the stop body being fitted into the slide through hole of the locating seat with the driven post extending out of the projecting post by a certain length, the driving post being fitted into the driving hole of the linking plate, the driven post being fitted into the driven hole thereof, nuts being screwed onto the driving post and the driven post, so that the