Treadmill having soft walking board assembly with functions of heat dissipation, shock absorption, and wear resistance

1. A treadmill comprising:

two side frames, a walking board assembly mounted between the two side frames, and a walking belt encircling the walking board assembly;

wherein:

the walking board assembly includes a support plate, a shock-absorbing layer, a wear-resistant layer, and two thermal conducting strips;

the support plate is made of a composite board;

the shock-absorbing layer has a soft feature;

the shock-absorbing layer has a bottom face abutting a top face of the support plate;

the shock-absorbing layer has a thickness of 0.2 cm to 0.3 cm;

the shock-absorbing layer has a length less than a length of the support plate;

the shock-absorbing layer has a width less than a width of the support plate;

the wear-resistant layer has a flexible feature;

the wear-resistant layer has a thickness of 0.1 mm to 0.2 mm;

the wear-resistant layer has a length more than the length of the shock-absorbing layer;

the wear-resistant layer has a width more than the width of the shock-absorbing layer;

the width of the wear-resistant layer is less than the width of the support plate;

the wear-resistant layer has a bottom face abutting a top face of the shock-absorbing layer and the top face of the support plate;

the support plate has two sides located outside of two sides of the wear-resistant layer respectively, with a width defined between each of the two sides of the support plate and each of the two sides of the wear-resistant layer;

the width defined between each of the two sides of the support plate and each of the two sides of the wear-resistant layer allows fixing of the two side frames on the support plate;

each of the two thermal conducting strips is made of metal foil and has a flexible feature;

each of the two thermal conducting strips has a thickness of 0.2 mm to 0.5 mm;

each of the two thermal conducting strips has a longitudinal length less than the length of the wear-resistant layer and more than the length of the shock-absorbing layer;

the two thermal conducting strips are parallel with each other;

the two thermal conducting strips longitudinally abut the shock-absorbing layer and are arranged at a middle position of the support plate;

each of the two thermal conducting strips has a front end and a rear end abutting the top face of the support plate; and

the wear-resistant layer completely covers the two thermal conducting strips and the shock-absorbing layer on the support plate.

2. The treadmill as claimed in claim 1 , wherein the shock-absorbing layer is made of ethylene-vinyl acetate (EVA) copolymer, polyurethane (PU) or foam.

3. The treadmill as claimed in claim 1 , wherein the wear-resistant layer is made of polyoxymethylene (POM), polyethylene terephthalate (PET) or Nylon.

4. The treadmill as claimed in claim 1 , wherein each of the two thermal conducting strips is made of copper foil.

5. The treadmill as claimed in claim 1 , wherein each of the two thermal conducting strips is made of aluminum foil.

6. The treadmill as claimed in claim 1 , wherein each of the two thermal conducting strips has a top face longitudinally abutting the bottom face of the wear-resistant layer and a bottom face longitudinally abutting the top face of the shock-absorbing layer.

7. The treadmill as claimed in claim 1 , wherein each of the two thermal conducting strips has a top face longitudinally abutting the bottom face of the shock-absorbing layer and a bottom face longitudinally abutting the top face of the support plate.

8. The treadmill as claimed in claim 1 , wherein the two thermal conducting strips are spaced from each other.