An adjustable safety trampoline

Abstract

The present invention provides an adjustable safety trampoline, comprising a jumping mat, a frame, and a flexible rod, wherein the top end of the flexible rod is around the jumping mat, and the bottom end of the flexible rod is installed on the frame, so that the jumping mat is erected above the frame; a leg structure, wherein a plurality of the leg structures are supported under the frame to make it detached from the ground; a supporting rod, wherein a plurality of supporting rods are arranged around the jumping mat, and a protective net is spread above the jumping mat, and the bottom of the protective net is arranged around the jumping mat; the flexible rod is a rod-shaped structure with a thicker bottom gradually changing to a thinner top, and the bending stiffness of the flexible rod is greater than 500 N / m and less than 1200 N / m; the bottom end of the flexible rod is fixedly installed on the frame through a bottom end mounting structure, and the top end of the flexible rod is fixedly installed around the jumping mat through a buckle structure.

Description

Technical Field

[0001] The invention relates to the technical field of trampolines, and in particular to an adjustable safety trampoline. Background Art

[0002] At present, the world's major trampoline manufacturers are mainly concentrated in China, the United States, Germany and Japan. Among them, Wood & Batten International and Wall-E Co., Ltd. are the most prominent.

[0003] The basic structure of a trampoline includes a jumping mat, a frame, a plurality of flexible rods, support legs, a protective net and support rods. The top ends of the flexible rods are installed around the jumping mat, and the bottom ends of the flexible rods are installed on the frame, so that the jumping mat is erected above the frame. The frame is supported by the support legs and is erected above the ground. The protective net is arranged around the jumping mat and extends above the jumping mat, and the protective net protects people exercising on the jumping mat and prevents them from falling off the jumping mat. The support rods are arranged around the jumping mat to open the protective net.

[0004] Trampoline exercise is a healthy and interesting recreational activity. Studies have shown that trampoline exercise can not only exercise the body and enhance muscle strength, but also help people develop a sense of balance and improve sports skills. With the development of technology, trampolines are increasingly entering people's lives. At the same time, it also exposes the defects of traditional trampolines, such as:

[0005] 1. The bending stiffness of the flexible rods of traditional trampolines is 1200N / m to 3000N / m. The installation of the flexible rods requires a lot of effort, which is difficult for ordinary people to implement.

[0006] 2. The installation structure of the top and bottom of the traditional trampoline flexible rod is complicated and cannot play a substantial auxiliary role in the installation of the flexible rod.

[0007] 3. After the trampoline is installed, the softness, hardness and elasticity of the jumping mat cannot be adjusted, and cannot meet the needs of different groups of people.

[0008] 4. The trampoline structure is not strong enough, easy to collapse and damage, and unsafe.

[0009] 5. Difficulties in production and transportation.

[0010] Therefore, it is urgent to improve the structure of the trampoline to overcome the defects of the prior art. Summary of the invention

[0011] In order to overcome the shortcomings of the prior art, the present invention provides a trampoline, which mainly improves the bending rigidity of the flexible rod and the installation structure of the flexible rod, so that the installation of the trampoline is labor-saving and convenient, and the general public can install it by themselves. After the trampoline is installed, the elasticity of the trampoline bouncing mat can be adjusted to meet the needs of different groups of people, thereby increasing the comfort of bouncing. The safety of the trampoline is greatly improved, it is durable, and the material is safe and environmentally friendly.

[0012] The technical solution of the present invention is as follows:

[0013] An adjustable safety trampoline, the trampoline comprising

[0014] Bounce pad,

[0015] framework, and

[0016] A flexible rod, the top end of which is mounted on the periphery of the bouncing mat via a snap-fit ​​structure, and the bottom end of which is mounted on the frame via a bottom mounting structure, so that the bouncing mat is mounted above the frame;

[0017] A leg structure, wherein a plurality of the leg structures are supported below the frame to lift it off the ground;

[0018] Support rods, a plurality of support rods are arranged around the bouncing mat, a protective net is spread above the bouncing mat, and the bottom of the protective net is arranged around the bouncing mat;

[0019] The flexible rod is a rod-shaped structure with a thicker bottom and a thinner top, and the bending rigidity of the flexible rod is greater than 500 N / m and less than 1200 N / m;

[0020] The bottom end of the flexible rod is fixedly mounted on the frame via a bottom end mounting structure, and the top end of the flexible rod is fixedly mounted on the periphery of the bouncing mat via a buckle structure.

[0021] The bottom mounting structure comprises an upper plug hole on the upper side of the frame and a lower plug hole on the lower side of the frame arranged in pairs, and each pair of the upper plug hole and the lower plug hole are arranged in a staggered manner;

[0022] The bottom end mounting structure also has a sleeve corresponding to each pair of the upper plug holes and the lower plug holes, the sleeve is inserted into a pair of the upper plug holes and the lower plug holes, and the bottom end of the flexible rod is inserted into the sleeve.

[0023] Preferably, the diameter of the lower plug hole is larger than the diameter of the bottom end of the sleeve but smaller than the diameter of the main body of the sleeve, thereby preventing the sleeve from falling off from the lower plug hole.

[0024] Preferably, the top end of the sleeve is provided with a barrel opening which gradually increases in radial direction, so as to facilitate the insertion of the bottom end of the flexible rod.

[0025] Preferably, the bottom mounting structure further comprises an elastic member, and the elastic member is inserted between the hole wall of the upper insertion hole and the flexible rod, so as to adjust the position of the flexible rod in the frame.

[0026] Preferably, the upper plug hole is set as an elliptical hole, the two ends of the elliptical hole are marked as end A and end B, which are respectively located on the inner side and outer side of the upper side of the frame; the elastic member is inserted into the A end or the B end of the elliptical hole, so as to adjust the position of the flexible rod passing through the upper side of the frame.

[0027] Preferably, two limit grooves are symmetrically dug in the middle of the hole wall of the upper plug hole; the side of the elastic member close to the sleeve is the inner side, and the side close to the hole wall is the outer side, and the inner side and the outer side are both arc-shaped surfaces; a clamping block is provided at the intersection of the two arc-shaped surfaces, and the shapes of the clamping block and the limit groove match each other and can be clamped to each other.

[0028] Preferably, an upper convex portion extends from the intersection of the blocking block and the outer side surface; a lower convex portion extends from the bottom of the outer side surface of the elastic member; when the elastic member is inserted into the upper plug hole, the upper convex portion and the lower convex portion respectively clamp the periphery of the hole wall of the upper plug hole from the upper and lower directions of the upper plug hole, thereby preventing it from falling off from the upper plug hole.

[0029] Preferably, the elastic member is made of elastic plastic or elastic rubber.

[0030] The buckle structure is arranged on the bouncing mat of the trampoline, and the top of the flexible rod is installed at a predetermined position around the bouncing mat; the buckle structure includes a mounting piece, a flexible belt, and at least one clamping piece; one end of the belt is fixedly arranged on the bouncing mat, the clamping piece is fixedly arranged on the belt, and the mounting piece is provided with a through hole; the belt and the clamping piece can pass through the through hole, and then the clamping piece is rotated to clamp at the opening of the through hole, so that the belt cannot be pulled back from the through hole; the top of the flexible rod is accommodated in the mounting piece, so that the top of the flexible rod is installed at a predetermined position around the bouncing mat.

[0031] The bottom of the mounting piece is provided with a receiving groove, and the top of the flexible rod is fixedly arranged in the receiving groove.

[0032] The accommodating groove is arranged in the extending direction of the top of the flexible rod.

[0033] The mounting piece comprises a thin tube portion and an enlarged head portion arranged at the top end of the thin tube portion; the top end of the flexible rod is inserted into the thin tube portion and fixedly connected thereto; the through hole is arranged on the side of the head portion.

[0034] The thin tube portion is arranged in an extending direction of the top of the flexible rod.

[0035] A blocking piece protrudes from the head at the outlet of the through hole; the blocking piece can block the holding piece, thereby preventing the holding piece from sliding and retracting into the through hole.

[0036] The clamping member has a short side and a long side, the short side of the clamping member is shorter than the hole width of the through hole, and the long side of the clamping member is larger than the hole width of the through hole, so that the clamping member can pass through the through hole and be clamped at the through hole along the long side direction.

[0037] Preferably, two clamping members are provided on the belt.

[0038] Preferably, when the clamping member is configured in the shape of an elongated cylinder, the through hole is also configured in the shape of an elongated cylinder.

[0039] Preferably, the clamping member is configured in the shape of an elongated cube, and the through hole is also configured in the shape of an elongated cube.

[0040] Preferably, the holding member is configured as a thin metal card having a long side and a short side, and the through hole is a flat hole.

[0041] Preferably, the bending stiffness of the flexible rod is 1000-1150 N / m.

[0042] Preferably, the diameter of the bottom of the flexible rod is 0.5-3 cm, and gradually tapers to a diameter of 0.03-2.5 cm at the top.

[0043] Preferably, the flexible rod is an aviation aluminum rod, a glass fiber rod or a carbon fiber rod.

[0044] Preferably, the length of the flexible rod is 0.05-1.5 m.

[0045] Preferably, the length of the flexible rod is 0.45-0.6 m.

[0046] Preferably, the cross-section of the flexible rod is circular, elliptical, triangular, quadrilateral, pentagonal or hexagonal, deformed or amorphous.

[0047] Preferably, several of the leg structures are arranged at the bottom of the frame to support the frame; the leg structure has a horizontal rod, a first vertical rod and a second vertical rod arranged at both ends of the horizontal rod, and a third vertical rod arranged in the middle of the horizontal rod, the first vertical rod and the second vertical rod are inclined toward the center of the trampoline mat relative to the third vertical rod, and the tops of the first vertical rod and the second vertical rod are bent in opposite directions.

[0048] The frame is provided with a matching cylinder matched with the tops of the first vertical rod and the second vertical rod, and the installation direction of the matching cylinder on the frame is the extension direction of the tops of the first vertical rod and the second vertical rod.

[0049] The frame is a circle formed by connecting several sections of arc steel pipes end to end. The connecting parts of adjacent arc steel pipes are respectively provided with matching first plug-in cylinders and first plug connectors; the first plug connector is inserted into the first plug-in cylinder, and the two are fixedly connected by pins.

[0050] The arc-shaped steel pipe is provided with a second plug-in tube at the connection position. The second plug-in tube is located in the extension direction of the top of the third vertical rod. The top of the third vertical rod is inserted into the second plug-in tube.

[0051] A third plug-in tube is provided in the middle of the horizontal rod, and the bottom end of the third vertical rod is inserted into the third plug-in tube.

[0052] A sleeve is welded at the bend of the first vertical rod, the mouth of the sleeve is located in the extension direction of the bottom end of the support rod, and the bottom end of the support rod is inserted into the sleeve; the mouth of the sleeve is a flat mouth, and the shape and size of the bottom end of the support rod and the mouth of the sleeve match each other.

[0053] The bottom of the sleeve is configured as a cylinder, and the diameter of the cylinder is slightly smaller than the diameter of the barrel mouth.

[0054] Each of the support rods is a large arc-shaped rod formed by splicing two small arc-shaped steel pipes, an upper section and a lower section.

[0055] The connection of the two small arc-shaped steel pipes is also provided with a matching fourth plug-in cylinder and a fourth plug connector, the fourth plug connector is inserted into the fourth plug-in cylinder, and the two are fixedly connected by a pin. The fourth plug-in cylinder has the same structure as the cylinder mouth of the sleeve. The fourth plug connector has the same structure as the bottom end of the support rod.

[0056] The beneficial effects of the present invention are as follows: the adjustable safety trampoline of the present invention has a sleeve on the frame of the bottom mounting structure, which is inserted into the frame and holds the bottom of the flexible rod, so as to facilitate the installation of the flexible rod. The installation method is labor-saving and convenient, the frame structure is simplified, and the production is convenient. The frame is also provided with an elastic member, which adjusts the position of the flexible rod inserted into the frame, thereby adjusting the tension of the flexible rod on the jumping mat at any time, adjusting the elastic force of the jumping mat, improving the jumping comfort of the jumping mat, meeting different user needs, and the adjustment method is simple and easy to implement.

[0057] The buckle structure of the present invention detachably and fixedly combines the flexible rod and the trampoline jumping mat, which is labor-saving and convenient to install and improves the installation safety. The installation of the trampoline can be easily realized through the buckle structure, which improves the installation safety, and the elasticity of the trampoline jumping mat can be adjusted.

[0058] The outrigger structure increases the stability of the trampoline and improves the safety performance of the trampoline.

[0059] The flexible rod is configured as a rod-shaped structure with a thicker bottom and a thinner top, and the bending rigidity of the flexible rod is greater than 500 N / m and less than 1200 N / m, so that the flexible rod is easy to bend and install, and can be truly installed by the general public. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1 It is a schematic structural diagram of the trampoline of the present invention.

[0061] Figure 2 It is a structural schematic diagram of the bottom end mounting structure of the trampoline flexible rod according to the present invention.

[0062] Figure 3 It is a schematic diagram of the exploded structure of the bottom end mounting structure of the trampoline flexible rod according to the present invention.

[0063] Figure 4 It is a structural schematic diagram of the sleeve of the bottom end mounting structure of the trampoline flexible rod according to the present invention.

[0064] Figure 5 It is a schematic structural diagram of the tube unit 21 of the trampoline of the present invention.

[0065] Figure 6 It is a schematic structural diagram of the elastic member of the bottom end mounting structure of the trampoline flexible rod according to the present invention.

[0066] Figure 7 This is a schematic structural diagram of the trampoline of the present invention from another direction.

[0067] Figure 8 It is a structural schematic diagram of the buckle structure of the present invention.

[0068] Fig. 9 for Figure 5 An enlarged view of point A shows a schematic structural diagram of another embodiment of the buckle structure of the present invention.

[0069] Fig.10 It is a structural schematic diagram of the present invention and the flexible rod used in conjunction with the buckle structure and the bottom end mounting structure.

[0070] Fig.11 FIG. 2 is another schematic diagram of the structure of the trampoline of the present invention.

[0071] Fig.12 Another structural schematic diagram of the safety buckle structure of the present invention.

[0072] Fig.13 It is a schematic diagram of the exploded structure of the trampoline of the utility model.

[0073] Fig.14 It is a schematic structural diagram of the leg structure 40 and the support rod 60 of the trampoline of the present invention.

[0074] Fig.15 It is a schematic structural diagram of the sleeve 45. DETAILED DESCRIPTION

[0075] In order to make the purpose of the invention, the technical scheme and the technical effect of the present invention more clear, the present invention is further described below in conjunction with specific implementation methods. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0076] Reference Figure 1 The popular trampoline generally includes a bouncing mat 10 and a frame 20, and a plurality of flexible rods 30, the top ends 31 of the flexible rods 30 are installed around the bouncing mat 10, and the bottom ends of the flexible rods 30 are installed on the frame 20, so that the bouncing mat 10 is erected above the frame 20. Under the pressure of the bouncing mat 10, the flexible rods 30 usually bend in a certain arc, thereby tensioning the bouncing mat 10. Users can bounce, play and perform on the bouncing mat 10. The flexible rods 30 are preferably aviation aluminum rods, fiberglass rods or carbon fiber rods.

[0077] The bouncing pad 10 is preferably circular, and may also be any other shape, such as a square, a regular pentagon, a regular hexagon, an ellipse, etc. The frame 20 is a ring formed by splicing a plurality of pipe units 21. The ends of adjacent pipe units 21 are respectively provided with mutually matching tongues and plug ports. The tongues are inserted into the plug ports to connect the adjacent pipe units 21.

[0078] The frame 20 is preferably placed on the support legs 40 , and may also be placed on the ground. Preferably, the pipe unit 21 is placed on the support legs 40 .

[0079] In order to support the mat and the user, the flexible rod 30 usually needs to have a certain bending resistance. In particular, when the flexible rod 30 is installed, the bottom of the flexible rod 30 is usually fixed on the support seat 20 first, and then the top of the flexible rod 30 is deflected from the natural placement state to the center direction of the mat 10 by about 300 to 450 mm. The bending stiffness of the flexible rod is related to the material properties and geometric shape. When the material is determined, the bending stiffness of the cylindrical flexible rod 30 is consistent in each part of the rod. The deflection of the cylindrical flexible rod requires a lot of effort, and even for a strong adult male, it is difficult to complete the installation of a trampoline at one time. The present application sets the flexible rod to a rod-shaped structure that gradually changes from a thicker bottom to a thinner top. Specifically, the rod diameter at the bottom of the flexible rod is 0.05 to 3 cm, and the rod diameter gradually becomes 0.03 to 2.5 cm at the top. When the material is determined, the bending stiffness of the flexible rod is proportional to the rod diameter. The thicker the rod, the greater the bending stiffness, while the thinner the rod, the smaller the bending stiffness. Such a flexible rod structure is easy to bend, and the top of the flexible rod 30 can be deflected from the natural placement state toward the center of the mat 10 with less effort, thereby facilitating the installation of the flexible rod 30 and the mat 10, and even for women and children with less strength, barrier-free installation can be achieved.

[0080] Further, the bending stiffness of the flexible rod 30 is set to be greater than 500N / m and less than 1200N / m. Preferably, the bending stiffness is set to 1000-1150N / m. The arm strength of an average adult male is between 300N-600N. If the bending stiffness of the flexible rod exceeds 1200N / m, it will be very difficult for an average adult male to deflect the top of the flexible rod from the natural placement state toward the center direction of the mat 10, and it is basically impossible for women to achieve this. However, if the bending stiffness of the flexible rod is lower than 500N, it is difficult to support the weight of the mat and the user bouncing on the mat. In addition, the bending stiffness of the flexible rod 30 described in the present application is set to 500-1200N / m. In order to compensate for the reduction in the support strength of the mat 10 caused by the lower bending stiffness of the flexible rod 30, it is necessary to increase the number of the flexible rods 30.

[0081] At present, the common materials of flexible rods on the market are glass fiber rods or carbon fibers. Glass fiber rods have good corrosion resistance, insulation, heat insulation and high strength. However, the high hardness of glass fiber rods, combined with their inherent brittleness, constitutes an outstanding low bending resistance, with defects such as poor bending resistance, poor wear resistance and poor softness. Glass fiber rods are prone to cracking and losing their original elasticity after long-term repeated use and use at low temperatures. Sometimes they break, causing damage to the trampoline and posing a safety hazard. In addition, according to the list of carcinogens published by the World Health Organization's International Agency for Research on Cancer on October 27, 2017, glass fiber is listed in the list of Class 3 carcinogens and is an unsafe material.

[0082] Preferably, the material of the flexible rod 30 described in the present application is preferably an aviation aluminum rod. The aviation aluminum rod is lightweight, has an oxidized surface, and is more wind-resistant and pressure-resistant than a glass fiber rod. It also has good strength, toughness, fatigue resistance, good plasticity, and is not easy to break. Even if the pressure it carries exceeds its upper limit, the aviation aluminum rod will not break, but will increase its curvature, which will not cause damage to the trampoline and improve the safety of the trampoline.

[0083] The length of the flexible rod 30 is 0.05-1.5 m.

[0084] Preferably, the length of the flexible rod 30 is 0.45-0.6 m.

[0085] The cross section of the flexible rod 30 is circular, elliptical, triangular, quadrilateral, pentagonal, hexagonal, deformed or amorphous.

[0086] Reference Figure 1 The frame 20 is provided with a bottom mounting structure for adjusting the mounting position of the bottom end of the flexible rod 30, and the bottom mounting structure includes an upper plug hole 24 arranged on the upper side of the frame 20 and a lower plug hole 25 arranged on the lower side of the frame 20. Each pair of the upper plug hole 24 and the lower plug hole 25 are staggered. The adjustment structure also includes a sleeve 26 corresponding to each pair of the upper plug hole 24 and the lower plug hole 25. The sleeve 26 is inserted into the upper plug hole 24 and the lower plug hole 25. The bottom end of the flexible rod 30 is inserted into the sleeve 26.

[0087] Reference Figure 2 , Figure 3 and Figure 4 In order to prevent the sleeve 26 from falling off from the lower plug hole 25, the diameter of the bottom end 262 of the sleeve 26 is set to be smaller than the diameter of its main body 261. Specifically, the aperture of the lower plug hole 25 is larger than the diameter of the bottom end 262 and smaller than the diameter of the main body 261, thereby preventing the sleeve 26 from falling off from the lower plug hole 25.

[0088] Furthermore, the top end 263 of the sleeve 26 is provided with a barrel opening which gradually increases in the radial direction, so as to facilitate the insertion of the bottom end of the flexible rod 30 .

[0089] When the bottom end of the flexible rod 30 is installed, first insert the sleeve 26 into the pair of the upper plug hole 24 and the lower plug hole 25, and then directly insert the bottom end of the flexible rod 30 into the sleeve 26. Alternatively, the bottom end of the flexible rod 30 can be directly inserted into the sleeve 26, and then the sleeve 26 is inserted into the pair of the upper plug hole 24 and the lower plug hole 25, which is simple and convenient to install.

[0090] It should be understood that when the bottom end of the flexible rod 30 and the sleeve 26 are inserted into the lower insertion hole 25, the lower end of the flexible rod 30 is fixed at the insertion position in the frame 20. When the top ends of all the flexible rods 30 are installed around the bouncing mat 10, the installation position of the top ends of the flexible rods 30 remains unchanged, and the tension and elastic force of the bouncing mat 10 are constant.

[0091] Reference Figure 2 , Figure 4 and Figure 6 , an elastic member 27 is also provided at the upper plug hole 24. The elastic member 27 is inserted between the hole wall of the upper plug hole 24 and the flexible rod 30, so as to adjust the position of the flexible rod 30. Preferably, the upper plug hole 24 is set as an elliptical hole, and the two ends of the elliptical hole, denoted as end A and end B, are respectively located on the inner side and outer side of the upper side of the frame. The elastic member 27 is inserted into the end A or end B of the elliptical hole, so as to adjust the position of the flexible rod 30 in the frame 20, and then adjust the tension and elastic force of the bouncing mat. Specifically, when the bottom end of the flexible rod 30 and the sleeve 26 pass through the upper plug hole 24 and are inserted into the lower plug hole 25. The elastic member 27 is inserted into the A position, that is, the position of the upper plug hole 24 close to the inner side of the upper side of the frame 20, and the flexible rod 30 and the sleeve 26 are squeezed to the B position. At this time, the tension force of the flexible rod 30 on the bouncing mat 10 is relatively large, and the elasticity of the bouncing mat 30 is relatively high. When the elastic member 27 is inserted into the B position, that is, the position where the upper insertion hole 24 is close to the outside of the frame 20, the flexible rod 30 and the sleeve 26 are squeezed to the A position, the tension force on the bouncing mat 10 is relatively small, and the elasticity of the bouncing mat 30 is relatively low.

[0092] Preferably, refer to Figure 5 The upper plug hole 24 has two symmetrically-digging limit grooves 28 in the middle of the hole wall. Figure 5 The side of the elastic member 27 close to the sleeve 26 is the inner side 271, and the side close to the hole wall is the outer side 272. The inner and outer sides 271 and 272 are both set as arc surfaces, and a clamping block 273 is provided at the intersection of the two arc surfaces. The shapes of the clamping block 273 and the limiting groove 28 match each other and can be clamped to each other.

[0093] Preferably, an upper protrusion 274 extends from the intersection of the block 273 and the outer side surface 272. A lower protrusion 275 extends from the bottom of the outer side surface 272 of the elastic member 27. When the elastic member 27 is inserted into the upper plug hole 24, the upper protrusion 274 and the lower protrusion 275 respectively clamp the periphery of the hole wall of the upper plug hole 24 from the upper and lower directions of the upper plug hole 24, thereby preventing it from falling off from the upper plug hole 24.

[0094] Preferably, refer to Figure 1 , Figure 7 and Fig.11 In order to facilitate the installation of the top of the flexible rod 30, a plurality of buckle structures 70 are provided around the jumping mat 10. The buckle structures 70 correspond to the flexible rods 30 one by one. The top 31 of the flexible rod 30 can be detachably installed at a predetermined position around the jumping mat 10. The installation method is labor-saving and convenient. Figure 3 The buckle structure 70 includes a mounting member 71, a flexible belt 72, and at least one clamping member 73 fixedly arranged on the flexible belt 72. The flexible belt 72 is fixedly installed at the bottom of the bouncing mat 10. The mounting member 71 is provided with a through hole 723. The clamping member 73 and the belt 72 can pass through the through hole 723. After passing through, the clamping member 73 is rotated to be fixedly clamped at the opening of the through hole 723 to prevent the belt 72 from being pulled back from the through hole 723 under the action of tension; the top of the flexible rod 30 is accommodated in the mounting member 71 so that the top 31 of the flexible rod 30 is installed at a predetermined position of the bouncing mat 10.

[0095] Preferably, refer to Fig. 9 In one embodiment of the present invention, a receiving groove (not shown) is provided at the bottom of the mounting member 72, and the top portion 31 of the flexible rod 30 is fixedly disposed in the receiving groove. Preferably, the receiving groove is disposed in the extending direction of the top portion 31 of the flexible rod, so as to facilitate the insertion and matching of the top portion 31 of the flexible rod 31. Figure 3 In the embodiment shown, the mounting member 72 is in a cube-like shape. It should be understood that the shape of the mounting member 72 is not limited to the shape shown in the figure, and it can also be spherical, polyhedral or any other shape. The present invention does not specifically limit the shape of the mounting member 72. Under the premise of not departing from the basic concept of the present invention, any change in the external shape of the mounting member 72 should be regarded as within the protection scope defined by the present invention.

[0096] Preferably, refer to Fig. 9 , Fig.10 and Fig.11 The mounting member 72 has a thin tube portion 721 and an enlarged head portion 722 disposed at the top of the thin tube portion 721. The top end 31 of the flexible rod 30 is inserted into the thin tube portion 721 and fixedly connected thereto. The thin tube portion 721 is disposed in the extending direction of the top portion 31 of the flexible rod, so as to facilitate the top portion 31 of the flexible rod 31 to be inserted and matched therewith. The through hole 723 is disposed on the side of the head portion 722.

[0097] Reference Fig. 9The transverse diameter of the head portion 722 is larger than that of the thin tube portion 721 , thereby increasing the contact area between the mounting member 71 and the bouncing mat 10 and supporting the bouncing mat 10 more stably.

[0098] Preferably, a blocking piece 724 protrudes from the head 722 at the exit of the through hole 723. The blocking piece 724 can block the clamping member 73, thereby preventing the clamping member 73 from sliding and retracting into the through hole 723.

[0099] Specifically, refer to Fig. 9 The head 721 is in a rectangular parallelepiped shape, and the thin tube portion 721 is integrally formed on its bottom surface. The side of the through hole 723 is provided with a large end and a small end, and is reduced from the large end to the small end. The through hole 723 is provided in a flat hole. The belt 72 and the clamping member 73 are both in a sheet shape, so that they can pass through the through hole 723 in cooperation with the through hole. After passing through the through hole 723, the clamping member 73 rotates a certain angle, so as to be clamped at the opening of the through hole 723.

[0100] The clamping member 73 can pass through one side of the through hole 713 and be clamped at the opening of the other side of the through hole 713. In the embodiment of the present invention, the clamping member 73 has a smaller short side and a longer long side. The short side of the clamping member 73 is slightly smaller than the hole width of the through hole 713, and the long side of the clamping member 73 is slightly larger than the hole width of the through hole 713. Such a structural arrangement enables the clamping member 73 to pass from one side of the through hole 713 to the other side, and after passing through, the clamping member 73 is rotated to be clamped at the opening of the through hole 713.

[0101] It should be understood that the shape of the clamping member 73 matches that of the through hole 713. For example, when the clamping member 73 is configured in an elongated cylindrical shape, the through hole 713 should also be configured in an elongated cylindrical shape; when the clamping member 73 is configured in an elongated cube shape, the through hole 713 must also be configured in an elongated cube shape accordingly. Figure 8 , Fig. 9 and Fig.12 In a preferred embodiment of the present invention, the clamping member 73 is configured as a long cube-shaped thin metal card. The through hole 713 is also configured as a long cube-shaped flat mouth. Preferably, the clamping member 73 of the present invention is configured as a Japanese character. Preferably, the tail of the Japanese character-shaped clamping member is provided with a hook.

[0102] After the clamping member 73 passes through the through hole 713, the clamping member 73 is clamped at the hole opening on the other side of the through hole 713 along the long diameter direction, thereby fixing the belt 72 and preventing the belt 72 from retracting under the action of tension, thereby clamping the top end of the flexible rod 30 at a predetermined position at the bottom of the periphery of the bouncing mat 10.

[0103] It should be understood that the position of the clamping member 73 on the strap 72 must meet the design purpose of "installing the top end of the flexible rod 30 at a predetermined position around the bouncing mat 10". Therefore, the clamping member 73 should be installed at an appropriate position on the strap 72. If the clamping member 73 is too far or too close to the bouncing mat 10, the design purpose cannot be achieved.

[0104] The strap 72 is fixedly arranged on the jumping mat 10. It should be understood that there are many ways to fix the flexible strap 72 on the bottom of the jumping mat 10, for example, it can be fixed by welding, snapping, buckling, etc. In the preferred embodiment of the present invention, the flexible strap 72 is sewn on the bottom of the jumping mat.

[0105] Reference Fig.10 , the mounting member 72 can be directly arranged on the top of the flexible rod 30. During the installation process, the bottom end 32 of the flexible rod 30 is first inserted into the sleeve 26 of the support seat tube 20, and then the belt 72 is passed through the through hole 723, and the top 31 of the flexible rod 30 and the mounting member 72 are pushed to a predetermined position around the bouncing mat 10, and the clamping member 73 is pulled out of the through hole 723, and the clamping member 73 is rotated to clamp it at the through hole 723, so as to achieve the purpose of installing the top 31 of the flexible rod 30 and the head 722 at the bottom of the periphery of the bouncing mat 10.

[0106] The mounting member 72 may also be directly inserted into the belt 71. During the installation process, the bottom end 32 of the flexible rod 30 is first inserted into the sleeve 26 of the support seat tube 20, the mounting member 72 is adjusted to a suitable position of the belt 71, the top 31 of the flexible rod 30 is inserted into the mounting groove or the thin tube portion of the mounting member 72, the top 31 of the flexible rod 30 and the mounting member 72 are pushed to a predetermined position around the bouncing mat 10, the clamping member 73 is pulled out of the through hole 723, and the clamping member 73 is rotated to clamp it at the through hole 723, so as to achieve the purpose of mounting the top 31 of the flexible rod 30 and the head 722 at the bottom of the periphery of the bouncing mat 10.

[0107] In the trampoline structure, the plurality of flexible rods 30 are evenly distributed at the bottom of the support seat tube 20 and the periphery of the bouncing mat 10 to support the bouncing mat 10, so that the bouncing mat 10 is subjected to balanced forces in all directions. During the installation of the trampoline, if the plurality of flexible rods 30 are installed in sequence, the bouncing mat on the side where the flexible rods 30 are not installed will be subjected to uneven forces, making the installation of the flexible rods on this side more difficult, and even affecting the molding structure of the final product. To avoid this phenomenon, refer to Fig.12and 13 The clamping members 73 on the strap 72 of the present invention are provided in two pieces, and the first clamping member 73 enables the top of the flexible rod 30 and the head 722 to be installed at a pre-installed position, for example, near the periphery of the bouncing mat 10. The second clamping member 73 enables the top of the flexible rod 30 and the head 722 to be installed at the installation position, i.e., the periphery of the bouncing mat 10. During the installation process, the bottom end of the flexible rod 30 is first fixed to the support seat tube 20, and the strap 72 is pulled so that the first clamping member 73 passes through the through hole 713 of the head, and the clamping member 73 is clamped at the through hole 713 along the long diameter direction. At this time, the top of the flexible rod 30 and the head are installed at a pre-installed position, for example: the periphery of the bouncing mat. When the tops of all the flexible rods 30 are installed at the pre-installation position, the belt 72 is pulled in sequence so that the second clamping member 73 passes through the through hole 723 and is clamped at the through hole 723 along the long diameter direction. The flexible rod 30 is further bent and the top of the flexible rod 30 is installed at the installation position, that is, the periphery of the bouncing mat 10.

[0108] Generally, for the convenience of transportation, the frame 20 is a circle formed by connecting several segments of arc-shaped steel pipes 24 end to end. The joints 25 of the adjacent arc-shaped steel pipes 24 are respectively provided with a first plug-in cylinder and a first plug connector (not shown) that cooperate with each other. The first plug connector is inserted into the first plug-in cylinder, and the two are fixedly connected by a pin. In the conventional structure of the trampoline, the bottom end of the flexible rod 30 is mounted on the frame 20, and the top end of the flexible rod 30 is supported on the periphery of the mat 10. The mat 10 presses the flexible rod 30 downward, so that it bends toward the center of the mat 10. During the installation of the trampoline, when one of the arc-shaped steel pipes 24 is connected to the mat 10 through a plurality of the flexible rods 30, under the pressure of the mat 10, the flexible rods 30 bend toward the center of the mat 10 and pull the arc-shaped steel pipe 24 upward toward the center of the mat 10, so that each section of the arc-shaped steel pipe 24 is high in the middle and low on both sides, causing the adjacent arc-shaped steel pipes 24 to fall off or collapse from the connection, thereby destroying the stability of the frame 20.

[0109] Reference Fig.13 and Fig.14 In order to more stably support the frame 20, the leg structure 40 has a horizontal rod 41, a first vertical rod 42 and a second vertical rod 43 arranged at both ends of the horizontal rod 41, and a third vertical rod 44 arranged in the middle of the horizontal rod 41, the first vertical rod 42 and the second vertical rod 43 are inclined toward the center of the trampoline mat relative to the third vertical rod 44, and the tops 421 and 431 of the first vertical rod 42 and the second vertical rod 43 are bent in opposite directions.

[0110] The frame 20 is provided with a matching cylinder 21 that matches with the tops 421 and 431 of the first vertical rod 42 and the second vertical rod 43, respectively. The mounting direction of the matching cylinder 21 on the frame 20 must be in the extending direction of the tops 421 and 431 of the first vertical rod 42 and the second vertical rod 43, so as to facilitate the mounting of the leg structure 40. Furthermore, in order to achieve a stable mounting of the two, the matching cylinder 21 and the tops 421 and 431 are fixedly connected by a pin 22.

[0111] After the first vertical rod 42 and the second vertical rod 43 are inserted into the matching tube 21 , a force in the opposite direction of the flexible rod 30 is applied to the arc-shaped steel tube 24 , thereby keeping the arc-shaped steel tube 24 balanced and preventing the arc-shaped steel tube 24 from being high in the middle and low at both ends.

[0112] In order to more stably support the frame 20, the arc-shaped steel pipe 24 is provided with a second plug-in tube 23 at the connection, and the second plug-in tube 23 is located in the extension direction of the top of the third vertical rod 44. The top of the third vertical rod 44 is inserted into the second plug-in tube 23, thereby supporting the connection 25 of the arc-shaped steel pipe 24 and preventing the adjacent arc-shaped steel pipe 24 from falling off or collapsing from the connection.

[0113] A third plug-in tube 46 is provided in the middle of the horizontal rod 41 , and the bottom end of the third vertical rod 44 is inserted into the third plug-in tube 46 , so as to facilitate the disassembly and installation of the third vertical rod 44 .

[0114] Reference Fig.13 and Fig.14 , a sleeve 45 is welded at the bend of the first vertical rod 42, and the installation direction of the barrel mouth 451 of the sleeve 45 is located in the extension direction of the bottom end 61 of the support rod 60, and the bottom end 61 of the support rod 60 is inserted into the sleeve 45. The barrel mouth 451 of the sleeve 45 and the bottom end 61 of the support rod 60 match each other in shape. Preferably, the barrel mouth 451 of the sleeve 45 is set as a flat mouth. For example, the barrel mouth 451 of the sleeve 45 is an elliptical flat mouth, and the bottom end 61 of the support rod 60 is also elliptical. The barrel mouth 451 of the sleeve 45 is a rectangular flat mouth, and the bottom end 61 of the support rod 60 is also rectangular. The flat mouth can prevent the support rod from rotating, thereby increasing the stability of the support 60.

[0115] Further, refer to Fig.15The bottom of the sleeve 45 is set as a cylinder 452, and the diameter of the cylinder 452 is slightly smaller than the diameter of the barrel opening 451. After the bottom end 61 of the support rod 60 is inserted into the barrel opening 451, it may also squeeze into the cylinder 452 under the action of pressure. Since the diameter of the cylinder 452 is slightly smaller than the diameter of the bottom end 61, it will tightly wrap the bottom end 61, increase the binding force between the two, and make it difficult for the bottom end 61 to fall off from the sleeve 45, thereby further increasing the installation stability of the support rod 60.

[0116] Preferably, the support rod 60 is a large arc rod formed by splicing two small arc steel pipes 62. Specifically, the connection between the upper and lower sections of the small arc steel pipes 62 is also provided with a matching fourth plug-in cylinder 621 and a fourth plug connector 622. The fourth plug connector 622 is inserted into the fourth plug-in cylinder 621, and the two are fixedly connected by a pin 63. The upper and lower sections of the arc steel pipe 62 are spliced ​​into a large arc rod, which is convenient for transporting the support rod. The upper and lower sections of the arc steel pipe are plug-in connected and fixedly connected with the pin 63, which is convenient for installation and has a stable structure.

[0117] Preferably, the fourth plug-in barrel 621 has the same structure as the barrel opening of the sleeve 45. The fourth plug connector 622 has the same structure as the bottom end 61 of the support rod 60, and its functions and effects are also the same, which will not be described in detail.

[0118] The above content is a further detailed description of the present invention in combination with specific preferred implementation methods, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, without departing from the concept of the present invention, its architecture can be flexible and can derive a series of products. Just making a few simple deductions or substitutions should be regarded as belonging to the scope of patent protection of the present invention determined by the submitted claims.

Claims

1. An adjustable safety trampoline, comprising: Bounce pad, framework, and A flexible rod, the top end of which is located around the bouncing mat, and the bottom end of which is mounted on the frame, so that the bouncing mat is erected above the frame; A leg structure, wherein a plurality of the leg structures are supported below the frame to lift it off the ground; Support rods, a plurality of support rods are arranged around the bouncing mat, a protective net is spread above the bouncing mat, and the bottom of the protective net is arranged around the bouncing mat; The feature is that the flexible rod is a rod-shaped structure with a thicker bottom and a thinner top, and the bending stiffness of the flexible rod is greater than 500 N / m and less than 1200 N / m; The bottom end of the flexible rod is fixedly mounted on the frame via a bottom end mounting structure, and the top end of the flexible rod is fixedly mounted on the periphery of the bouncing mat via a buckle structure; The buckle structure is arranged on the bouncing mat of the trampoline, and the top of the flexible rod is installed at a predetermined position around the bouncing mat; the buckle structure includes a mounting piece, a flexible belt, and at least one clamping piece; one end of the belt is fixedly arranged on the bouncing mat, the clamping piece is fixedly arranged on the belt, and the mounting piece is provided with a through hole; the belt and the clamping piece can pass through the through hole, and then the clamping piece is rotated to clamp at the opening of the through hole, so that the belt cannot be pulled back from the through hole; the top of the flexible rod is accommodated in the mounting piece, so that the top of the flexible rod is installed at a predetermined position around the bouncing mat.

2. The adjustable safety trampoline according to claim 1, characterized in that: The bottom mounting structure includes an upper plug hole on the upper side of the frame and a lower plug hole on the lower side of the frame arranged in pairs, and each pair of the upper plug hole and the lower plug hole are staggered; The bottom end mounting structure also has a sleeve corresponding to each pair of the upper plug holes and the lower plug holes, the sleeve is inserted into a pair of the upper plug holes and the lower plug holes, and the bottom end of the flexible rod is inserted into the sleeve.

3. The adjustable safety trampoline according to claim 2, characterized in that: The hole diameter of the lower plug hole is larger than the diameter of the bottom end of the sleeve and smaller than the diameter of the main body of the sleeve, thereby preventing the sleeve from falling off from the lower plug hole.

4. The adjustable safety trampoline according to claim 2, characterized in that: The bottom mounting structure also has an elastic member, which is inserted between the hole wall of the upper plug hole and the flexible rod, so as to adjust the position of the flexible rod in the frame; the upper plug hole is set as an elliptical hole, and the two ends of the elliptical hole are marked as end A and end B, which are respectively located on the inner side and outer side of the upper side of the frame; the elastic member is inserted into the A end or the B end of the elliptical hole, so as to adjust the position of the flexible rod passing through the upper side of the frame.

5. The adjustable safety trampoline according to claim 1, characterized in that: The bottom of the mounting piece is provided with a receiving groove, the top of the flexible rod is fixedly arranged in the receiving groove, and the receiving groove is arranged in the extending direction of the top of the flexible rod.

6. The adjustable safety trampoline according to claim 1, characterized in that: The mounting piece comprises a thin tube portion and an enlarged head portion arranged at the top end of the thin tube portion; the top end of the flexible rod is inserted into the thin tube portion and fixedly connected thereto; the through hole is arranged on the side of the head portion.

7. The adjustable safety trampoline according to claim 1, characterized in that: The clamping member has a short side and a long side, the short side of the clamping member is shorter than the hole width of the through hole, and the long side of the clamping member is larger than the hole width of the through hole, so that the clamping member can pass through the through hole and be clamped at the through hole along the long side direction.

8. The adjustable safety trampoline according to claim 1, characterized in that: The belt is provided with two clamping parts.

9. The adjustable safety trampoline according to claim 1, characterized in that: The bending rigidity of the flexible rod is 1000-1150 N / m; the rod diameter at the bottom of the flexible rod is 0.5-3 cm, and gradually tapers to a rod diameter of 0.03-2.5 cm at the top; the length of the flexible rod is 0.05-1.5 m.

10. The adjustable safety trampoline according to claim 1, characterized in that: The cross section of the flexible rod is circular, elliptical, triangular, quadrilateral, pentagonal or hexagonal, deformed or amorphous.

11. The adjustable safety trampoline according to claim 1, characterized in that: Several of the leg structures are arranged at the bottom of the frame to support the frame; the leg structure has a horizontal rod, a first vertical rod and a second vertical rod arranged at both ends of the horizontal rod, and a third vertical rod arranged in the middle of the horizontal rod, the first vertical rod and the second vertical rod are respectively inclined toward the center of the trampoline mat relative to the third vertical rod, and the tops of the first vertical rod and the second vertical rod are bent in the opposite direction; the frame is provided with a matching tube that matches the tops of the first vertical rod and the second vertical rod, and the installation direction of the matching tube on the frame is the extension direction of the tops of the first vertical rod and the second vertical rod.

12. The adjustable safety trampoline according to claim 11, characterized in that: The frame is a circle formed by connecting several sections of arc-shaped steel pipes end to end, and the connecting parts of adjacent arc-shaped steel pipes are respectively provided with matching first plug-in cylinders and first plug-in joints; the first plug-in joint is inserted into the first plug-in cylinder, and the two are fixedly connected by pins; the arc-shaped steel pipe is provided with a second plug-in cylinder at the connecting part, and the second plug-in cylinder is located in the extension direction of the top of the third vertical rod, and the top of the third vertical rod is inserted into the second plug-in cylinder.

13. The adjustable safety trampoline according to claim 11, characterized in that: Another sleeve is welded at the bending part of the first vertical rod, and the mouth of the other sleeve is located in the extension direction of the bottom end of the support rod, and the bottom end of the support rod is inserted into the other sleeve; the mouth of the other sleeve is a flat mouth, and the shape and size of the bottom end of the support rod and the mouth of the other sleeve match each other; the bottom of the other sleeve is set as a cylinder, and the diameter of the cylinder is slightly smaller than the diameter of the mouth of the cylinder.

14. The adjustable safety trampoline according to claim 13, characterized in that: Each of the support rods is a large arc rod formed by splicing two small arc steel pipes, upper and lower; the connection between the two small arc steel pipes is also respectively provided with a matching fourth plug-in cylinder and a fourth plug connector, the fourth plug connector is inserted into the fourth plug-in cylinder, and the two are fixedly connected by a pin; the structure of the fourth plug-in cylinder is the same as that of the tube mouth of the other sleeve; the structure of the fourth plug connector is the same as that of the bottom end of the support rod.

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