Treadmill

A treadmill comprising:

• a treadmill body;
• wherein:
• the treadmill body includes a main support unit and a belt mechanism;
• the main support unit includes:
• at least one first frame;
• at least one second frame located under the at least one first frame;
• multiple first elastic shock-absorbing members mounted between the at least one first frame and the at least one second frame;
• and
• multiple second elastic shock-absorbing members mounted on a bottom of the at least one second frame;
• the at least one first frame and the at least one second frame are arranged and combined to construct a multi-layer frame structure;
• the first elastic shock-absorbing members are dispersed and arranged between the at least one first frame and the at least one second frame;
• the second elastic shock-absorbing members are dispersed and arranged on the bottom of the at least one second frame;
• the belt mechanism is mounted on the at least one first frame;
• the belt mechanism includes an endless running belt, a support board supporting an upper part of the running belt, and a drive motor module driving and moving the running belt;
• the running belt is movably connected with the at least one first frame by two rollers;
• the drive motor module is installed and secured on the at least one first frame;
• the drive motor module has a drive end mechanically connected with one of the two rollers by a mechanic transmission connecting structure;
• the main support unit further includes multiple third elastic shock-absorbing members mounted on the at least one first frame;
• the third elastic shock-absorbing members are dispersed and arranged on the at least one first frame;
• the support board is elastically supported on the third elastic shock-absorbing members;
• and
• the support board faces an inner face of the upper part of the running belt.