Running deck assembly and treadmill

1. A running deck assembly, comprising:

a front running deck;

a rear running deck, wherein a front end face of the rear running deck directly abuts a rear end face of the front running deck;

a flexible layer in one-piece, laid on an upper surface of the front running deck and an upper surface of the rear running deck; and

an annular running belt, rotatably mounted around the front running deck and the rear running deck with a clearance, wherein the flexible layer in one-piece is fixedly attached on the upper surface of the front running deck and the upper surface of the rear running deck, the flexible layer in one-piece is disposed between the annular running belt and upper surfaces of the front running deck and the rear running deck, and the rear running deck is folded up onto the front running deck by a flexibility property of the flexible layer in a folded state of the running deck assembly;

wherein the running deck assembly further comprises a detachable spreading component configured to keep the front running deck and the rear running deck flatly spread out;

wherein the detachable spreading component comprises: a first spreading board and at least two connecting bars provided on the first spreading board; wherein the at least two connecting bars are detachably connected to a lateral face of the front running deck and a lateral face of the rear running deck; and the first spreading board abuts the lateral face of the front running deck and the lateral face of the rear running deck.

2. The running deck assembly of claim 1 , wherein the running deck assembly further comprises a wear-resisting layer;

wherein the wear-resisting layer is laid on an upper surface of the flexible layer.

3. The running deck assembly of claim 2 , wherein the wear-resisting layer is laid on the upper surface of the flexible layer by adhering.

4. The running deck assembly of claim 2 , wherein a material of the wear-resisting layer is one or a combination selected from a group consisting of: poly tetra fluoroethylene, polyamide, and polyethylene terephthalate.

5. The running deck assembly of claim 2 , wherein the running deck assembly further comprises: a smoothing layer;

wherein the smoothing layer is laid on an upper surface of the wear-resisting layer.

6. The running deck assembly of claim 1 , wherein:

the flexible layer is laid on the upper surface of the front running deck and the upper surface of the rear running deck by adhering; or

the flexible layer is laid on the upper surface of the front running deck and the upper surface of the rear running deck by snap-fitting.

7. The running deck assembly of claim 1 , wherein a material of the flexible layer is ethylene-vinyl acetate copolymer or polyethylene.

8. The running deck assembly of claim 1 , wherein the rear running deck is foldable to the front running deck toward a direction of a lower surface of the flexible layer.

9. A treadmill, wherein the treadmill comprises a running deck assembly comprising:

a front running deck;

a rear running deck, wherein a front end face of the rear running deck directly abuts a rear end face of the front running deck;

a flexible layer in one-piece, laid on an upper surface of the front running deck and an upper surface of the rear running deck; and

an annular running belt, rotatably mounted around the front running deck and the rear running deck with a clearance, wherein the flexible layer in one-piece is fixedly attached on the upper surface of the front running deck and the upper surface of the rear running deck, the flexible layer in one-piece is disposed between the annular running belt and upper surfaces of the front running deck and the rear running deck, and the rear running deck is folded up onto the front running deck by a flexibility property of the flexible layer in a folded state of the running deck assembly;

wherein the running deck assembly further comprises a detachable spreading component configured to keep the front running deck and the rear running deck flatly spread out;

wherein the detachable spreading component comprises: a first spreading board and at least two connecting bars provided on the first spreading board; wherein the at least two connecting bars are detachably connected to a lateral face of the front running deck and a lateral face of the rear running deck; and the first spreading board abuts the lateral face of the front running deck and the lateral face of the rear running deck.

10. The treadmill of claim 9 , wherein the running deck assembly further comprises a wear-resisting layer;

wherein the wear-resisting layer is laid on an upper surface of the flexible layer.

11. The treadmill of claim 10 , wherein the wear-resisting layer is laid on the upper surface of the flexible layer by adhering.

12. The treadmill of claim 10 , wherein a material of the wear-resisting layer is one or a combination selected from a group consisting of: poly tetra fluoroethylene, polyamide, and polyethylene terephthalate.

13. The treadmill of claim 10 , wherein the running deck assembly further comprises: a smoothing layer;

wherein the smoothing layer is laid on an upper surface of the wear-resisting layer.

14. The treadmill of claim 9 , wherein:

the flexible layer is laid on the upper surface of the front running deck and the upper surface of the rear running deck by adhering; or

the flexible layer is laid on the upper surface of the front running deck and the upper surface of the rear running deck by snap-fitting.

15. The treadmill of claim 9 , wherein a material of the flexible layer is ethylene-vinyl acetate copolymer or polyethylene.

16. The treadmill of claim 9 , wherein the rear running deck is foldable to the front running deck toward a direction of a lower surface of the flexible layer.