초록 ▼

A skateboard in accordance includes a footplate (1) having a lower surface, a front wheel and a rear wheel (3) arranged in a front end and a rear end of the lower surface respectively, wherein the wheels are universal, and the footplate includes a front plate (17) and a rear plate (18). The front pl

A skateboard in accordance includes a footplate (1) having a lower surface, a front wheel and a rear wheel (3) arranged in a front end and a rear end of the lower surface respectively, wherein the wheels are universal, and the footplate includes a front plate (17) and a rear plate (18). The front plate and the rear plate are connected via a rotatable torsional mechanism, and a restriction element (4) is defined between each plate and the torsional mechanism for restricting the rotation range of the torsional mechanism.

대표청구항 ▼

What is claimed is: 1. A skateboard, comprising: a footplate comprising a lower surface, the lower surface comprising a front end and a rear end; wheels attached at the front end and rear end of the lower surface; wherein the wheels are universal, the footplate comprising a front plate, a rear plat

What is claimed is: 1. A skateboard, comprising: a footplate comprising a lower surface, the lower surface comprising a front end and a rear end; wheels attached at the front end and rear end of the lower surface; wherein the wheels are universal, the footplate comprising a front plate, a rear plate, and a rotatable torsional mechanism connecting the front plate and the rear plate, and a restriction element enclosing the torsional mechanism for restricting rotation range of the torsional mechanism, wherein the torsional mechanism comprises a front connection portion, a rear connection portion and at least an elastic element attached between the front connection portion and the rear connection portion, and the elastic element connects with the front plate and the rear plate via the front connection portion and the rear connection portion respectively, wherein the elastic element is plate configuration, and the front connection portion and the rear connection portion each defines a slot in one end thereof, and the elastic element is attached between the front connection portion and the rear connection portion, wherein the other end of each of the front connection portion and the rear connection portion defines a screw hole, and the front connection portion and the rear connection portion are attached on the front plate and the rear plate by extending a screw pole through corresponding screw hole, and wherein the front connection portion comprises an extending portion, and a cap is clasped between the extending portion and the front plate, and the cap comprises a top surface and a lower surface, and the extending portion, together with the top surface and the lower surface, prevents the cap from falling away, and the rear plate further comprises a binding hole. 2. A skateboard, comprising: a footplate comprising a lower surface, the lower surface comprising a front end and a rear end; wheels attached at the front end and rear end of the lower surface; wherein the wheels are universal, the footplate comprising a front plate, a rear plate, and a rotatable torsional mechanism connecting the front plate and the rear plate, and a restriction element enclosing the torsional mechanism for restricting rotation range of the torsional mechanism, wherein the torsional mechanism comprises a front connection portion, a rear connection portion and at least an elastic element attached between the front connection portion and the rear connection portion, and the elastic element connects with the front plate and the rear plate via the front connection portion and the rear connection portion respectively, wherein the elastic element is plate configuration, and the front connection portion and the rear connection portion each defines a slot in one end thereof, and the elastic element is attached between the front connection portion and the rear connection portion, wherein the other end of each of the front connection portion and the rear connection portion defines a screw hole, and the front connection portion and the rear connection portion are attached on the front plate and the rear plate by extending a screw pole through corresponding screw hole, and wherein the restriction element is a sleeve, and the elastic element is received in the sleeve, and the front connection portion and the rear connection portion each comprises a through hole, and each end of the sleeve defines holes corresponding to the through holes, and bolts are defined for extending through said holes and through boles. 3. The skateboard as claimed in claim 2, wherein the front plate and the rear plate each defines a cavity for receiving the torsional mechanism and the restriction element. 4. The skateboard as claimed in claim 2, wherein each end of the sleeve comprises two holes opposite to each other in a circle of the sleeve. 5. The skateboard as claimed in claim 2, wherein the universal wheel comprises a supporting portion, and an acute angle is formed between the supporting portion and the footplate. 6. The skateboard as claimed in claim 5, wherein the acute angle is 60 degrees. 7. A skateboard comprising: a footplate comprising a lower surface, the lower surface comprising a front end and a rear end; wheels attached at the front end and rear end of the lower surface; wherein the wheels are universal, the footplate comprising a front plate, a rear plate, and a rotatable torsional mechanism connecting the front plate and the rear plate, and a restriction element being defined between the torsional mechanism and the footplate for restricting rotation range of the torsional mechanism, wherein the torsional mechanism comprises a front connection portion, a rear connection portion and at least an elastic element attached between the front connection portion and the rear connection portion, and the elastic element connects with the front plate and the rear plate via the front connection portion and the rear connection portion respectively, wherein the elastic element is plate configuration, and the front connection portion and the rear connection portion each defines a slot in one end thereof, and the elastic element is attached between the front connection portion and the rear connection portion, wherein the other end of each of the front connection portion and the rear connection portion defines a screw hole, and the front connection portion and the rear connection portion are attached on the front plate and the rear plate by extending a screw pole through corresponding screw hole, and wherein the front connection portion comprises an extending portion, and a cap is clasped between the extending portion and the front plate, and the cap comprises a top surface and a lower surface, and the extending portion, together with the top surface and the lower surface, prevents the cap from falling away, and the rear plate further comprises a binding hole. 8. A skateboard comprising: a footplate comprising a lower surface, the lower surface comprising a front end and a rear end; wheels attached at the front end and rear end of the lower surface; wherein the wheels are universal, the footplate comprising a front plate, a rear plate, and a rotatable torsional mechanism connecting the front plate and the rear plate, and a restriction element being defined between the torsional mechanism and the footplate for restricting rotation range of the torsional mechanism, wherein the torsional mechanism comprises a front connection portion, a rear connection portion and at least an elastic element attached between the front connection portion and the rear connection portion, and the elastic element connects with the front plate and the rear plate via the front connection portion and the rear connection portion respectively, wherein the elastic element is plate configuration, and the front connection portion and the rear connection portion each defines a slot in one end thereof, and the elastic element is attached between the front connection portion and the rear connection portion, wherein the other end of each of the front connection portion and the rear connection portion defines a screw hole, and the front connection portion and the rear connection portion are attached on the front plate and the rear plate by extending a screw pole through corresponding screw hole, and wherein the restriction element is a sleeve, and the elastic element is received in the sleeve, and the front connection portion and the rear connection portion each comprises a through hole, and each end of the sleeve defines holes corresponding to the through holes, and bolts are defined for extending through said holes and through holes. 9. The skateboard as claimed in claim 8, wherein the front plate and the rear plate each defines a cavity for receiving the torsional mechanism and the restriction element. 10. The skateboard as claimed in claim 8, wherein each end of the sleeve comprises two holes opposite to each other in a circle of the sleeve. 11. The skateboard as claimed in claim 8, wherein the universal wheel comprises a supporting portion, and an acute angle is formed between the supporting portion and the footplate. 12. The skateboard as claimed in claim 11, wherein the acute angle is 60 degrees.