Patent Grant
10166422
The present invention is related to a trampoline support frame, particularly to a trampoline support frame with high assembling strength and simplified manufacturing process for meeting requirements for environment protection.
It is found that the structure of trampoline support frame has also become key technology gradually in the improvement of trampoline due to a large amount of jumps and bumps generally arising when a trampoline is used by a user. For instance, China patent publication no. CN202001453 disclosed a connecting structure of trampoline frame comprising a cross rod and a vertical rod. One end of the vertical rod is provided with an annular faucet fixed to the cross rod by welding. Further, China patent publication no. CN201082327 also disclosed an improved trampoline comprising an annular frame, an elastic net, a plurality of supporting components and a plurality of retaining plates. The elastic net is provided at inner side of the annular frame. The supporting components are used for supporting at the bottom of the annular frame, respectively. In this case, each of the supporting components and the annular frame are welded together via the retaining plates so as to be fixed.
It may be found in the technical contents of above two patents, however, there is none of fixing structure between two side surfaces adjacent to the bottom of the cross rod and the vertical rod, because the vertical rod is only fixed to the bottom of the cross rod by welding in the patent no. CN202001453, which further leads to the break of the cross rod with respect to the vertical rod readily generated due to impact force during the trampoline is used. In the patent no. CN201082327, additionally, although one side of the annular frame may be fixed to the supporting component by welding via the retaining plate, there is a problem of insufficient assembling strength owing to none of fixing structure between another side of the annular frame and the supporting component. Furthermore, it may be further found, from the viewpoint of assembling process of the trampoline, that it is necessary to align the retaining plate with the supporting component and the side of annular frame after the supporting component and the annular frame are assembled, followed by fixing the retaining plate at two sides thereof to the supporting component and the annular frame by welding, respectively, via welding equipment. As a result, the increased manufacturing cost due to excessively complicated manufacturing process and the problem of environment protection, such as excessive manufacturing energy consumption, may occur in the trampoline.
It is the main object of the present invention to solve the problems of insufficient assembling strength at sides and excessively complicated manufacturing process resulting in excessive energy consumption in the prior art.
For achieving the above object, the present invention provides a trampoline support frame comprising a plurality of transversal branch pipes connected to each other so as to form an annular frame provided for a bouncing component to be mounted at inner side thereof, and a plurality of longitudinal branch pipes provided to one of the transversal branch pipes, characterized in that each of the longitudinal branch pipes is respectively provided with a fitting portion, two reinforcing portions integrally extended from the fitting portion to corresponding two side surfaces of the transversal branch pipe and then fixed to the transversal branch pipe by welding, an accommodating space formed between the two reinforcing portions and provided for one of the transversal branch pipes to be located therein, and two bearing surfaces, each of which is formed between two ends of the two reinforcing portions and toward the accommodating space so as to support one of the transversal branch pipes.
In one embodiment, each of the transversal branch pipes is respectively provided with a curved portion, a first connecting portion provided at one end of the curved portion, and a second connecting portion provided at another end of the curved portion and covering while being fixed to the first connecting portion of another transversal branch pipe. In this case, the first connecting portion is provided with a first opening, and the second connecting portion is provided with a second opening covering the first opening. Specifically, each of the first connecting portions is provided with two first stepped surfaces located at two opposite outer sides of the first opening while in parallel with each other, respectively. Each of the second connecting portions is provided with two second stepped surfaces located at two opposite outer sides of the second opening while in parallel with the two first stepped surfaces, respectively. The two reinforcing portions of each of the longitudinal branch pipes are attached to the two second stepped surfaces by welding. Further, each of the first connecting portions is provided with two first curved surfaces connected to the two first stepped surfaces and being opposite to each other, respectively. Each of the second connecting portions is provided with two second curved surfaces connected to the two second stepped surfaces and being opposite to each other so as to be located at two opposite outer sides of the two first curved surfaces, respectively. The two bearing surfaces of each of the longitudinal branch pipes are attached against one of the second curved surfaces.
In one embodiment, the two reinforcing portions of each of the longitudinal branch pipes are extended more than one-half of width of the two second stepped surfaces.
In one embodiment, each of the longitudinal branch pipes is provided with at least one additive weld hole provided in one of the reinforcing portions, respectively, in such a way that the reinforcing portion is fixed at inner side thereof to the second stepped surface by welding.
In one embodiment, the trampoline support frame further comprises a plurality of connecting pipes provided in one of the fitting portions, respectively, and a plurality of supporting pipes mounted while connected to the adjacent two connecting pipes at one side far away from the fitting portion. Further, the trampoline support frame further comprises a plurality of pipes for enclosure net mounted and fixed to the outside of one of the longitudinal branch pipes and one of the connecting pipes, respectively, while extended toward one side far away from the supporting pipe, for allowing a safety net to be mounted thereto.
In comparison with the prior art, the features of above embodiments of the present invention are as follows.
In the present invention, the two reinforcing portions of each of the longitudinal branch pipes are extended from and integrally formed with the fitting portion, such that the two reinforcing portions of each of the longitudinal branch pipes may be welded to the surface of each of the transversal branch pipes directly after the transversal branch pipe is placed into the accommodating space. Thereby, the manufacturing process for the trampoline support frame is simplified, and manufacturing energy consumption is reduced so as to achieve requirements for environment protection. Additionally, assembling strength between each of the longitudinal branch pipes and two outer side surfaces of one of the transversal branch pipes is strengthened through the two reinforcing portions of the longitudinal branch pipe. As a result, the problems of excessively complicated manufacturing process and insufficient assembling strength at sides in the prior art may be then solved by the above-mentioned structure.
The detailed description and technical solution with respect to the present invention will be now described in conjunction with the drawings as follows.
Referring to
Then, each of the longitudinal branch pipes 2 is evenly located on the edge of the annular frame, such that each of the transversal branch pipes 1 is placed into the accommodating space 23 and supported by the bearing surfaces 24. The two reinforcing portions 22 of each of the longitudinal branch pipes 2 are attached to two corresponding side surfaces of one of the transversal branch pipes 1. As a result, welding equipment (not shown in the figures) is just used for fixing the two reinforcing portions 22 and the two bearing surface 24 of each of the longitudinal branch pipes 2 to the surface of one of the transversal branch pipes 1 by welding, respectively, such that the outer edge (i.e., the edge of the two reinforcing portions 22 and the edge of the two bearing surfaces 24) at one end of the longitudinal branch pipe 2 is fixed to the transversal branch pipe 1 completely by welding. In this case, the two reinforcing portions 22 of each of the longitudinal branch pipes 2 are extended from and integrally formed with the fitting portion 21, such that the two reinforcing portions 22 of each of the longitudinal branch pipes 2 may be welded to the surface of each of the transversal branch pipes 1 directly after the transversal branch pipe 1 is placed into the accommodating space 23 without precision alignment. Moreover, amount of material to be used during manufacturing process may be reduced, so as to avoid unnecessary waste of raw material. Thereby, the manufacturing process for the trampoline support frame may be simplified, and manufacturing energy consumption may be reduced so as to achieve requirements for environment protection. Furthermore, assembling strength between each of the longitudinal branch pipes 2 and two outer side surfaces of one of the transversal branch pipes 1 is further strengthened, respectively, through the two reinforcing portions 22. As such, the problems of excessively complicated manufacturing process and insufficient assembling strength at sides in the prior art may be then solved.
Next, the main technical feature of the trampoline support frame may be clearly seen in the above technical content. Here, embodiments and other technical contents of the trampoline support frame will be further described in the present invention. Specifically, each of the transversal branch pipes 1 is provided with a curved portion 10, a first connecting portion 11 provided at one end of the curved portion 10, and a second connecting portion 12 provided at another end of the curved portion 10, respectively. The second connecting portion 12 of each of the transversal branch pipes 1 is coveringly provided over the first connecting portion 11 of adjacent transversal branch pipe 1. In this case, each of the first connecting portions 11 is provided with a first opening 111, and two first stepped surfaces 112 located at two opposite outer sides of the first opening 111 while in parallel with each other, respectively. Each of the second connecting portions 12 is provided with a second opening 121 covering one of the first openings 111, and two second stepped surfaces 122 located at two opposite outer sides of the second opening 121 while in parallel with the two first stepped surfaces 112, respectively. Each of the two reinforcing portions 22 of the longitudinal branch pipe 2 is then in parallel with each other and extended to attach to the outside of the two second stepped surfaces 122 (illustrated in
Particularly, the two reinforcing portions 22 of each of the longitudinal branch pipes 2 are extended more than one-half of width of the two second stepped surfaces 122 (as illustrated in
In one embodiment, further, each of the longitudinal branch pipes 2 is provided with at least one additive weld hole 25 provided in one of the reinforcing portions 22, respectively, for the enhancement of assembling strength between each of the transversal branch pipes 1 and each of the longitudinal branch pipes 2. The additive weld hole 25 may be allowed for the welding equipment to weld the inner side of the reinforcing portion 22 to the second stepped surface 122 in a welding manner, whereby the welding area and strength between the reinforcing portion 22 and the second stepped surface 122 are enhanced. In this case, the welding manner is plug weld.
Referring to
| Number | Name | Date | Kind |
|---|---|---|---|
| 1823028 | Caldwell | Sep 1931 | A |
| 1941465 | Cornell, Jr. | Jan 1934 | A |
| 5488810 | Horton | Feb 1996 | A |
| 8137242 | VanElverdinghe | Mar 2012 | B2 |
| 20040091307 | James | May 2004 | A1 |
| 20040176214 | Yueh | Sep 2004 | A1 |
| 20070049463 | Chu | Mar 2007 | A1 |
| 20100075810 | Schaffer | Mar 2010 | A1 |
| 20100240496 | Chen | Sep 2010 | A1 |
| 20120054999 | Hsiang | Mar 2012 | A1 |
| 20120289379 | Stokes | Nov 2012 | A1 |
| 20130045837 | Hsiang | Feb 2013 | A1 |
| 20170108152 | Hsiang | Apr 2017 | A1 |
| 20170312563 | Chen | Nov 2017 | A1 |
| 20180093120 | Chen | Apr 2018 | A1 |
| Number | Date | Country |
|---|---|---|
| 201082327 | Jul 2008 | CN |
| 202001453 | Oct 2011 | CN |
| Number | Date | Country | |
|---|---|---|---|
| 20180093119 A1 | Apr 2018 | US |
