Trampoline

Abstract

Disclosed is a trampoline, including a jumping surface and a foldable bed frame, where the foldable bed frame includes a polygonal frame body and a support assembly. A connecting base is arranged between two adjacent side rods, and each side rod includes two section rods, where proximal ends of the two section rods are pivotally connected to each other, and distal ends of the two section rods are pivotally connected to corresponding connecting bases respectively. A supporting base is arranged below each of the connecting bases. Each support assembly includes two support rods, upper ends of the two support rods are pivotally connected to corresponding connecting bases respectively, and lower ends of the two support rods are pivotally connected to corresponding supporting bases respectively. The jumping surface is located inside the polygonal frame body, and peripheral edges of the jumping surface are connected to the polygonal frame body.

What is claimed is: 
     
         1 . A trampoline, comprising a jumping surface and a foldable bed frame, wherein the foldable bed frame comprises a polygonal frame body formed by a plurality of side rods in a surrounding manner,
 and a support assembly arranged below each of the side rods;   a connecting base is arranged between two adjacent side rods, and each of the side rods includes two section rods, wherein proximal ends of the two section rods are pivotally connected to each other, and distal ends of the two section rods are pivotally connected to corresponding connecting bases respectively;   a supporting base is arranged below each of the connecting bases;   each of the support assemblies comprises two support rods that are pivotally connected in an X-shaped and crossed manner, upper ends of the two support rods are pivotally connected to corresponding connecting bases respectively, and lower ends of the two support rods are pivotally connected to corresponding supporting bases respectively;   the jumping surface is located inside the polygonal frame body, and peripheral edges of the jumping surface are connected to the polygonal frame body through a plurality of connecting members; and   when the foldable bed frame is folded, the proximal ends of the two section rods of each of the side rods move upward, the distal ends of the two section rods of each of the side rods move closer to each other, and the two support rods of each of the support assemblies also move closer to each other; further, when the distal ends of the two section rods of each of the side rods move closer to each other, the two section rods of each of the side rods and the two support rods of each of the support assemblies also move toward a center of the trampoline, and the jumping surface and the connecting members are folded inward.   
     
     
         2 . The trampoline according to  claim 1 , wherein the polygonal frame body is a regular polygon frame body formed by a plurality of equal-length side rods in a surrounding manner, and peripheral edges of the jumping surface are connected to the two section rods of each of the side rods through the plurality of connecting members. 
     
     
         3 . The trampoline according to  claim 1 , wherein each of the supporting bases is located directly below one corresponding connecting base, and a supporting plane suitable for contact with the ground is arranged at a bottom of each of the supporting bases. 
     
     
         4 . The trampoline according to  claim 1 , wherein a pivot connection position between the proximal ends of the two section rods of each of the side rods is aligned vertically with a pivot connection position between the two support rods of one corresponding support assembly. 
     
     
         5 . The trampoline according to  claim 1 , wherein pivot connection positions of the distal ends of the two section rods of each of the side rods are aligned vertically with pivot connection positions for upper ends of and pivot connection positions for lower ends of the two support rods of one corresponding support assembly respectively. 
     
     
         6 . The trampoline according to  claim 1 , wherein the two section rods of each of the side rods are line-shaped when they are unfolded. 
     
     
         7 . The trampoline according to  claim 6 , wherein the two section rods of each of the side rods are defined as a first section rod and a second section rod respectively, where one end of the first section rod close to the second section rod is provided with a first pivot connection piece, and one end of the second section rod close to the first section rod is provided with a second pivot connection piece; the first pivot connection piece comprises a first inserted connection portion that is inserted into and fixedly connected to an end portion of the first section rod, a first circular pivot connection portion exposed outside the end portion of the first section rod, a first arc-shaped concave portion that is located on a side of the first circular pivot connection portion close to the first inserted connection portion and extends outward in an axial direction of the first circular pivot connection portion, a first sector-shaped limiting block that is arranged on an outer surface of the first circular pivot connection portion in a protruding manner and is close to the first arc-shaped concave portion, and a first sector-shaped limiting groove that is concavely formed on the outer surface of the first circular pivot connection portion and is away from the first arc-shaped concave portion, wherein one end of the first sector-shaped limiting groove is provided with a vertical first end wall, and the other end of the first sector-shaped limiting groove is provided with a horizontal second end wall; the second pivot connection piece comprises a second inserted connection portion that is inserted into and fixedly connected to an end portion of the second section rod, a second circular pivot connection portion that is exposed outside the end portion of the second section rod and arranged with the first circular pivot connection portion in a staggered manner, a second arc-shaped concave portion that is located on a side of the second circular pivot connection portion close to the second inserted connection portion and extends inward in an axial direction of the second circular pivot connection portion, a second sector-shaped limiting block that is arranged on an inner surface of the second circular pivot connection portion in a protruding manner and is close to the second arc-shaped concave portion, and a second sector-shaped limiting groove that is concavely formed on the inner surface of the second circular pivot connection portion and is away from the second arc-shaped concave portion, wherein one end of the second sector-shaped limiting groove is provided with a vertical third end wall, and the other end of the second sector-shaped limiting groove is provided with a horizontal fourth end wall; the first circular pivot connection portion and the second circular pivot connection portion are arranged side by side and pivotally connected through a pin, the first arc-shaped concave portion is slidably fitted with an outer circular surface of the second circular pivot connection portion, and the second arc-shaped concave portion is slidably fitted with an outer circular surface of the first circular pivot connection portion, wherein the first sector-shaped limiting block is inserted into and slidably matched with the second sector-shaped limiting groove, and the second sector-shaped limiting block is inserted into and slidably matched with the first sector-shaped limiting groove; when the two section rods of each of the side rods are folded, the first arc-shaped concave portion slides to a lower side of the outer circular surface of the second circular pivot connection portion, the second arc-shaped concave portion slides to a lower side of the outer circular surface of the first circular pivot connection portion, the first sector-shaped limiting block slides to a position where its top abuts against the fourth end wall, and the second sector-shaped limiting block slides to a position where its top abuts against the second end wall; and when the two section rods of each of the side rods are folded, the first arc-shaped concave portion slides to a lower side of the outer circular surface of the second circular pivot connection portion, the second arc-shaped concave portion slides to a lower side of the outer circular surface of the first circular pivot connection portion, the first sector-shaped limiting block slides to a position where its top abuts against the fourth end wall, and the second sector-shaped limiting block slides to a position where its top abuts against the second end wall. 
     
     
         8 . The trampoline according to  claim 7 , wherein the first circular pivot connection portion, the first arc-shaped concave portion, the first sector-shaped limiting block, and the first sector-shaped limiting groove are concentrically arranged, the first sector-shaped limiting block and the first arc-shaped concave portion are parallel to each other, the first sector-shaped limiting groove is arranged relative to the first sector-shaped limiting block, a central angle of the first sector-shaped limiting block is 90 degrees, and a central angle of the first sector-shaped limiting groove is 270 degrees; and the second circular pivot connection portion, the second arc-shaped concave portion, the second sector-shaped limiting block, and the second sector-shaped limiting groove are also concentrically arranged, the second sector-shaped limiting block and the second arc-shaped concave portion are parallel to each other, the second sector-shaped limiting groove is arranged relative to the second sector-shaped limiting block, a central angle of the second sector-shaped limiting block is 90 degrees, and a central angle of the second sector-shaped limiting groove is 270 degrees. 
     
     
         9 . The trampoline according to  claim 1 , wherein two first pivot connection grooves are symmetrically formed on both sides of an upper end of each of the connecting bases, and the two first pivot connection grooves are configured for pivotally connecting end potions of the corresponding section rods; both sides of a lower end of each of the connecting bases are provided with a second pivot connection groove inwardly arranged and a third pivot connection groove outwardly arranged, wherein the second pivot connection groove is configured for pivotally connecting an upper end of the corresponding support rod located on the relatively inner side, and the third pivot connection groove is configured for pivotally connecting an upper end of the corresponding support rod located on the relatively outer side; and both sides of each of the supporting bases are provided with a fourth pivot connection groove inwardly arranged and a fifth pivot connection groove outwardly arranged, wherein the fourth pivot connection groove is configured for pivotally connecting a lower end of the corresponding support rod located on the relatively inner side, and the fifth pivot connection groove is configured for pivotally connecting a lower end of the corresponding support rod located on the relatively outer side. 
     
     
         10 . The trampoline according to  claim 1 , wherein the foldable bed frame further comprises at least one handrail rod, a lower end of the handrail rod is detachably inserted into one corresponding set of the connecting base and the supporting base, and a handrail is arranged at an upper end of the handrail rod, wherein the handrail rod has a telescopic rod structure.