CN211024943U - Flexible rod of trampoline - Google Patents

Abstract

The utility model provides a flexible rod of a trampoline, which comprises a cushion, a bottom frame and a plurality of flexible rods; the flexible rod is a straight rod with bending rigidity of 3000N/m-10000N/m, the bottom end of the flexible rod is installed on the bottom frame, the top end of the flexible rod deflects 10-200mm from a natural straightening state to the center of the cushion, so that the flexible rod is bent and installed at the periphery or the bottom of the cushion to support and tension the cushion. The bending rigidity of the flexible rod is a straight rod of 3000N/m-10000N/m, and the mat can be tightened only by deflecting 10-290mm towards the center of the mat when the flexible rod is installed, so that the elasticity of the mat is maintained, the installation is labor-saving and convenient, the difficulty of installation of the trampoline is reduced, and the installation safety is improved.

Description

Flexible rod of trampoline

Technical Field

The utility model relates to a trampoline technical field specifically, relates to a trampoline flexible rod.

Background

Trampoline sports is a healthy and interesting recreational activity. Research shows that trampoline sports not only can exercise body and strengthen muscle strength, but also can help people develop balance and improve motor skills. The flexible rods are an important part of the trampoline and are supported at their bottom ends in the base frame of the trampoline and at their top ends at the periphery of the mat of the trampoline. In order to support the mat and the person moving on the mat, the flexible rods must have a certain bending stiffness. For example: in chinese utility model CN101102821B, the international company for wood boards and battens discloses that the upper end of the flexible rod needs to deflect 300-450mm towards the center of the mat from the natural placement state without being connected to the edge of the mat to the state connected to the edge of the mat after the lower end of the flexible rod is assembled in place on the bottom frame. The patent also discloses that the flexural rigidity of the flexible rod is from 1200N/m to 3000N/m. Deflection of the flexible rods toward the center of the mat by 300-. In particular, the typical trampoline has 30-72 or more flexible rods, and it is difficult for a typical consumer to complete the installation of one trampoline. In particular, during deflection of the flexible rod, the installer is not strong enough to lose control of the flexible rod, and rebounding of the flexible rod is highly likely to injure the installer, causing an accident. Additionally, the flexible rod material ages after a period of use of the trampoline. Causing the flexible rod to become brittle and increasing the risk of fracture.

Therefore, it is actually necessary to improve the flexible rod of the trampoline, improve the bending rigidity and the weather resistance of the flexible rod, reduce the deflection distance when the flexible rod is installed, provide a flexible rod which can meet the tensioning requirement of the trampoline for a long time and is convenient to install, save labor and facilitate installation, reduce the difficulty of trampoline installation, improve installation safety and prolong the service life of the trampoline.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a flexible rod of trampoline, flexible rod are the straight-bar that bending rigidity is 3000N/m ~ 10000N/m, only need deflect 100 to the center of mat when the flexible rod installation and 290mm, just can tighten the mat, make it maintain elasticity, and the laborsaving convenience of installation reduces the degree of difficulty of trampoline installation, improves the installation security.

The technical scheme of the utility model as follows: a flexible rod of a trampoline, the trampoline comprising a mat, a base frame and a plurality of flexible rods; the flexible rod is a straight rod with bending rigidity of 3000N/m-10000N/m, the bottom end of the flexible rod is installed on the bottom frame, the top end of the flexible rod deflects 10-290mm from a natural straightening state to the center of the cushion, so that the flexible rod is bent and installed at the periphery or the bottom of the cushion to support and tension the cushion.

Preferably, the flexible rod is an aluminum rod or an aluminum alloy rod.

Preferably, the diameter of the flexible rod is 0.4-3.0 cm.

Preferably, the flexible rod has a length of 0.3-1.5 m.

Preferably, the mat has a length or width of 1-20 feet.

The top ends of the flexible rods are mounted at the periphery or bottom of the cushion through a buckle structure. Specifically, the buckle structure comprises a thin rod part for inserting the top of the flexible rod, an expanded head part is arranged at the top of the thin rod part, a through hole is formed in the head part, one end of a belt is fixedly connected to the bottom of the cushion, the belt penetrates through the through hole, a clamping part is fixedly connected to the belt, and the clamping part clamps the belt at the hole opening of the through hole to prevent the belt from retracting.

The bottom end of the flexible rod is inserted into the bottom frame, the bottom frame is of a tubular structure, upper insertion holes and lower insertion holes are arranged on the top surface and the bottom surface of the bottom frame in a staggered mode in pairs, and the bottom end of the flexible rod is obliquely inserted into the upper insertion holes and the lower insertion holes.

Each pair of the upper insertion holes and the lower insertion holes are correspondingly provided with sleeves, the sleeves are inserted into the pair of the upper insertion holes and the lower insertion holes, and the bottom ends of the flexible rods are inserted into the sleeves.

Preferably, the diameter of the lower insertion hole is larger than the diameter of the bottom end of the sleeve and smaller than the diameter of the main body portion of the sleeve, so that the sleeve is prevented from falling out of the lower insertion hole.

The utility model has the advantages that: trampoline's flexible pole bending stiffness be 3000N m ~ 10000N m, bending stiffness is high, during the installation, only need deflect 10-290mm to the center of mat, the laborsaving convenience of installation, ordinary consumer can install by oneself, reduces the degree of difficulty of trampoline installation, improves the installation security. The adoption of the metal aluminum rod of the flexible rod is aging-resistant, has better elastic recovery capability, can maintain the mat in a tensioning state, and increases the balance performance of the trampoline.

Description of the drawings:

fig. 1 is a schematic structural view of the trampoline of the present invention.

Fig. 2 is another schematic diagram of the trampoline of the present invention.

Fig. 3 is an enlarged view of fig. 2A, showing a schematic structural view of the flexible rod and the snap structure cooperating with each other.

Fig. 4 is an enlarged view of fig. 2B, which shows a structural schematic diagram of the flexible rod and the bottom frame used together.

Detailed Description

In order to make the utility model discloses a utility model purpose, technical scheme and technological effect are more clear and are understood, and it is right to combine specific embodiment below the utility model discloses do further explanation. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1 and 2, a trampoline of the current state of the art generally comprises a mat 10 and a base frame 20, and a plurality of flexible rods 30, the bottom ends 32 and the top ends 31 of which 30 are mounted at the periphery or bottom of the base frame 20 and the mat 10, respectively, so as to support the mat 10 above the base frame 20. The user is able to bounce, play and perform on the mat 10.

The flexible rods 30 are typically required to have some buckling resistance in order to support the mattress and the user. In particular, when the flexible rods 30 are installed, the bottom of the flexible rods 30 are usually fixed to the bottom frame 20, and then the top of the flexible rods 30 is deflected from the natural placement state to the center direction of the mat 10, i.e., the flexible rods are bent into an arc shape, so as to support and maintain the mat 10 in a taut state, so that the elasticity required for bouncing is satisfied. In the prior art trampolines the bending stiffness of the flexible rods is typically less than 3000N/m, which requires the upper ends of the flexible rods to be deflected by 300 and 450mm towards the centre of the mat from a natural resting position in which they are not connected to the edges of the mat, in order to support the mat and to give the mat the desired resilience. The bending stiffness of the prior art flexible rod 30 is too low, resulting in poor elastic recovery and easy bending. After a period of use of the trampoline, the flexible rods 30 are unable to return to their original positions, so that the mat 10 is no longer held in tension, and the structure relaxes and becomes less resilient. In addition, when the flexural rigidity of the flexible rods is less than 3000N/m, the maximum size of the trampoline mat can only reach 13 feet, otherwise, the elasticity of the mat cannot meet the requirement.

As a result of intensive studies, the applicant has found that the above-mentioned drawbacks can be overcome by increasing the flexural rigidity of the flexible rod. The application the flexible rod be the straight-bar that bending stiffness is 3000N/m ~ 10000N/m, install the bottom of flexible rod on the underframe frame, its top is deflected 10-290mm to the center of mat from the nature state of straightening, thereby makes the flexible rod is crooked, and installs the periphery or the bottom of mat to support and tensioning the mat. When the flexural rigidity of the flexible rod is 3000N/m-10000N/m, the elastic restoring force of the flexible rod is increased, and the flexible rod is not easily deformed, so that the cushion and the bouncing person can be supported.

The material of the common flexible rod in the market at present is glass fiber rod or carbon fiber. The glass fiber rod has good corrosion resistance, insulating property, heat insulation, high strength and the like. However, glass fiber rods have a high hardness, which, in combination with their inherent brittleness, constitute an outstanding low bending resistance, have the disadvantages of being not resistant to bending, having poor abrasion resistance, having poor flexibility, etc. The glass fiber rod is easy to crack after being repeatedly used for a long time and used in a low-temperature state, loses the original elasticity, is broken sometimes, causes the damage of the trampoline and has potential safety hazards. In addition, according to 2017, 10, 27, glass fiber is listed in a category 3 carcinogen list published by the international cancer research institution of the world health organization, and is unsafe material. Preferably, the flexible rod 30 is made of aluminum rod or aluminum alloy rod. The aviation aluminum rod is light in weight, the surface of the aviation aluminum rod is subjected to oxidation and electroplating treatment, the aviation aluminum rod is stronger in wind resistance and pressure resistance than a glass fiber rod, and meanwhile, the aviation aluminum rod has the advantages of good strength, toughness, fatigue resistance, good plasticity, difficulty in fracture and the like.

When the rigidity of the flexible rod is 3000N/m-10000N/m, the length or width of the cushion is 1-20 feet.

Preferably, the diameter of the flexible rod 30 is 0.4-3.0 cm.

Preferably, the flexible rod 30 has a length of 0.3-1.5 m.

Referring to fig. 3, the top ends 31 of the flexible rods 30 are mounted to the periphery or bottom of the mat by snap-fit structures 70. Specifically, the buckle structure 70 includes a thin rod portion 711 for inserting the top end 31 of the flexible rod, the thin rod portion 711 is provided with an enlarged head portion 712 at the top, the head portion 712 is provided with a through hole 713, one end of a strap 72 is fixedly connected to the bottom of the cushion 10, the strap 72 passes through the through hole 713, the strap 72 is fixedly connected to a retaining member 73, and the retaining member 73 retains the strap 72 at the opening of the through hole 713 to prevent the strap 72 from retracting. When the flexible rod is installed, the bottom end 32 of the flexible rod 20 is inserted into the bottom frame 20, and the top end 31 of the flexible rod 30 is inserted into the thin rod 711. The strap 72, which is pre-installed on the bottom of the mat 10, is pulled out through the through hole 713 of the head 712, the top ends 31 of the flexible rods 30 are pushed to deflect 10-290mm from the natural straight state toward the center of the mat to a pre-stressed position, and then the strap is clamped in the opening of the through hole 713 by the retainer 73, the strap is prevented from retracting, and the flexible rods 30 are fixed, thereby tensioning the trampoline. When the player jumps on the trampoline, the flexible rods bear the gravity of the mat and the downward pressure generated by the jumping of the player, and are recovered after being further bent, and the process is repeated to maintain the optimal state.

Referring to fig. 4, the bottom end 32 of the flexible rod 30 is inserted into the bottom frame 20, which is a tubular structure, and the top surface 21 and the bottom surface 22 of the bottom frame are provided with upper insertion holes 23 and lower insertion holes 24 in pairs, and the bottom end 32 of the flexible rod 32 is inserted into the pair of upper insertion holes 23 and the pair of lower insertion holes 24 in an inclined manner.

Each pair of the upper insertion hole 23 and the lower insertion hole 24 is provided with a sleeve 25, the sleeve 25 is inserted into one pair of the upper insertion hole 23 and the lower insertion hole 24, and the bottom end 32 of the flexible rod 32 is inserted into the sleeve 25.

Preferably, the diameter of the lower insertion hole 24 is larger than the diameter of the bottom end of the sleeve 25 and smaller than the diameter of the main body portion of the sleeve, so as to prevent the sleeve 25 from falling out of the lower insertion hole 24.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of the ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, its framework form can be nimble changeable, can derive series of products. But merely as a matter of simple deductions or substitutions, should be considered as belonging to the scope of patent protection of the present invention as determined by the claims submitted.

Claims (8)

1. A flexible rod of a trampoline, the trampoline comprising a mat, a base frame and a plurality of flexible rods; the bottom end of the flexible rod is mounted on the bottom frame, and the top end of the flexible rod deflects 10-290mm from a natural straightening state to the center of the cushion, so that the flexible rod is bent and mounted at the periphery or the bottom of the cushion to support and tension the cushion.

2. The trampoline flexible rod of claim 1, wherein the flexible rod is an aluminum rod, an aluminum alloy rod.

3. The trampoline flexible rod of claim 1, wherein the rod has a diameter of 0.4 to 3.0 cm.

4. The trampoline flexible rod of claim 1, wherein the flexible rod is 0.3-1.5m in length.

5. The trampoline flexible rod of claim 1, wherein the mat has a length or width of 1-20 feet.

6. The trampoline flexible rod of claim 1, wherein the top end of the flexible rod is mounted to the mat periphery or bottom by a snap-fit arrangement; the buckle structure comprises a thin rod part for inserting the top end of the flexible rod, an expanded head part is arranged at the top of the thin rod part, a through hole is formed in the head part, one end of a belt is fixedly connected to the bottom of the cushion, the belt penetrates through the through hole, a clamping part is fixedly connected to the belt, and the belt is clamped at the hole opening of the through hole by the clamping part to prevent the belt from retracting.

7. The trampoline flexible rod of claim 1, wherein the bottom end of the flexible rod is inserted into the bottom frame, the bottom frame is a tubular structure, the top surface and the bottom surface of the bottom frame are provided with upper insertion holes and lower insertion holes which are staggered in pairs, and the bottom end of the flexible rod is obliquely inserted into the upper insertion holes and the lower insertion holes.

8. The trampoline flexible rod of claim 7, wherein each pair of the upper and lower insertion holes is provided with a sleeve inserted into the pair of the upper and lower insertion holes, and a bottom end of the flexible rod is inserted into the sleeve, and the lower insertion hole has a diameter larger than a diameter of the bottom end of the sleeve and smaller than a diameter of a main body of the sleeve, thereby preventing the sleeve from falling out of the lower insertion hole.

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