A quick-folding hula hoop

Abstract

The present invention proposes a quick-folding hula hoop, comprising a plurality of arc-shaped rods, wherein connecting pieces are provided at the end positions of two adjacent arc-shaped rods, and the two ends of the connecting pieces are rotatably connected to the adjacent arc-shaped rods. When the arc-shaped rods are rotated to one extreme state relative to the connecting pieces, the arc-shaped rods and the connecting pieces are combined to form a circular ring structure. When the arc-shaped rods are rotated to another extreme state relative to the connecting pieces, all the arc-shaped rods are folded and gathered. A locking structure is provided between the arc-shaped rods and the connecting pieces for keeping the arc-shaped rods and the connecting pieces in relative stillness under the two extreme states. The present invention has a simple design structure and is easy to use. It adopts a one-piece structure to replace the existing segmented hula hoop structure, which reduces the difficulty in unfolding or folding the hula hoop and is simple to operate. It can not only achieve the purpose of folding and storing when idle and reducing space occupancy, but also avoid the problem of loss or wear of parts after storage.

Description

Technical Field

[0001] The present invention relates to the technical field of fitness equipment, in particular to a quick-folding hula hoop. Background Art

[0002] The hula hoop is a circular fitness equipment. It is easy to use, requires little exercise, and can effectively reduce abdominal fat. Therefore, it is very popular among people. Many people like to shake the hula hoop when they have nothing to do, which not only exercises the body but also helps lose weight.

[0003] Currently, most existing hula hoops are of an integral structure, which has the disadvantage of being inconvenient to carry and store. To solve this problem, the existing technology adopts a segmented structure to improve portability. However, most existing segmented hula hoops are installed in a splicing manner. On the one hand, it has high requirements on the user's disassembly and assembly capabilities, is difficult to install, and on the other hand, after the hula hoop is installed, it is difficult to store and takes up space. In addition, it is easy to cause loss and wear after being disassembled. Summary of the Invention

[0004] The present invention provides a quick-folding hula hoop to solve the problems of the existing segmented hula hoop mentioned in the above background art, such as being inconvenient to assemble and disassemble, difficult to store, taking up space, and being easy to be lost and worn.

[0005] The technical solution of the present invention is achieved as follows: a fast-folding hula hoop includes several arc-shaped rods, and connecting pieces are provided at the end positions of two adjacent arc-shaped rods. The two ends of the connecting pieces are rotatably connected to the adjacent arc-shaped rods. When the arc-shaped rods are rotated to one extreme state relative to the connecting pieces, the arc-shaped rods and the connecting pieces are combined to form a circular ring structure. When the arc-shaped rods are rotated to another extreme state relative to the connecting pieces, all the arc-shaped rods are folded and gathered to make the hula hoop as a whole form a rugby ball shape for storage. A locking structure is provided between the arc-shaped rods and the connecting pieces for keeping the arc-shaped rods and the connecting pieces in relative stillness under the two extreme states.

[0006] Preferably, a rotating shaft is provided at both ends of the arc rod, and the rotating shaft is rotatably connected to the connecting piece. The locking structure includes a clamping block arranged at the outer wall position of the rotating shaft, and a circumferentially distributed clamping groove is provided on the inner wall of the inner hole where the connecting piece and the rotating shaft cooperate. When the arc rod rotates around the rotating shaft, the clamping block on the rotating shaft can be placed in the clamping groove at different positions, thereby realizing the expansion or storage of the arc rod.

[0007] Preferably, the rotating shaft is a rotating sleeve that is arranged at both ends of the arc rod and protrudes outward, and the clamping block includes a first convex strip that is arranged on the outer wall of the rotating sleeve and protrudes along its axial direction; the inner hole of the connecting piece is an axial hole that is arranged at both ends of the connecting piece and can facilitate the insertion of the rotating sleeve, and the inner wall of the axial hole has a first groove that is concave and convenient for moving the first convex strip, and the clamping groove includes a clamping groove 1 and a clamping groove 2 that are arranged at both ends of the first groove and further concave inward, and the edge positions of both sides of the first convex strip, the edge position of the clamping groove 1 close to the center of the first groove, and the edge position of the clamping groove 2 close to the center of the first groove are all provided with transition arcs.

[0008] Preferably, the locking structure also includes a second ridge arranged on the outer wall of the rotating sleeve and symmetrically arranged relative to the first ridge, and a second groove is provided on the inner wall of the shaft hole of the connecting member at a position symmetrical to the first groove, and the second ridge is slidably arranged in the second groove.

[0009] Preferably, outwardly protruding center columns are provided on both sides of the connecting member at the center of the shaft hole. The center columns pass through the center hole of the rotating sleeve and are connected to the locking member installed on the arc rod.

[0010] Preferably, the locking structure includes locking blocks installed at both ends of the connecting piece and rotating synchronously with the connecting piece, and the outer wall of the locking block has outward-extending locking blocks on both sides, and spring pieces matching the locking blocks are provided at both ends of the arc rod. The spring piece is a wavy structure, and at least three recessed locking areas are provided on the inner side of the spring piece. When the locking block is inserted into the locking area at both ends of the spring piece, the arc rod is in an unfolded or folded state relative to the connecting piece.

[0011] Preferably, the number of the arc-shaped rods and the connecting members is the same, namely four, six, eight or ten.

[0012] Preferably, the rotation center lines at both ends of the connecting member are symmetrically arranged relative to the center of the connecting member, and the angle α between the two rotation center lines is 30°-90°.

[0013] Preferably, when the number of arc-shaped rods is four, the angle α is 90°; when the number of arc-shaped rods is six, the angle α is 60°; when the number of arc-shaped rods is eight, the angle α is 45°; when the number of arc-shaped rods is ten, the angle α is 36°.

[0014] Preferably, the arc-shaped rod includes an inner rod, an outer rod and an intermediate rod, and the intermediate rod is detachably connected to the inner rod and the outer rod respectively.

[0015] Preferably, anti-slip protrusions protruding inward are evenly arranged on the inner wall of the inner rod.

[0016] By adopting the above technical solution, the beneficial effects of the present invention are as follows: the present invention has a simple design structure and is easy to use. It adopts a one-piece structure to replace the existing segmented hula hoop structure, which reduces the difficulty of unfolding or folding the hula hoop, is simple to operate, and can be folded and stored when idle to reduce space occupancy, while avoiding the problem of parts being lost or worn after storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A perspective view of a first embodiment of the present invention;

[0019] Figure 2 It is a partial exploded view of the present invention;

[0020] Figure 3 A partial perspective view of the arc rod of the present invention;

[0021] Figure 4 An exploded view of the arc rod of the present invention;

[0022] Figure 5 is a cross-sectional view of the arc rod of the present invention;

[0023] Figure 6 is a perspective view of a connector according to the present invention;

[0024] Figure 7 It is a front view of the connecting piece of the present invention;

[0025] Figure 8 is a schematic plan view of the end portion of the connector of the present invention;

[0026] Figure 9 This is a structural diagram of the connection portion between the connector and the arc rod of the present invention;

[0027] Figure 10 This is an exploded view of another embodiment of the latching structure of the present invention;

[0028] Figure 11 A cross-sectional view of another embodiment of the latching structure of the present invention;

[0029] Figure 12 This is a structural diagram of a spring in another embodiment of the locking structure of the present invention;

[0030] Figure 13This is a structural diagram of a hula hoop in a semi-folded state according to an embodiment of the present invention;

[0031] Figure 14 This is a structural diagram of a hula hoop in a folded state according to an embodiment of the present invention;

[0032] Figure 15 This is a three-dimensional diagram of a hula hoop in an unfolded state according to a second embodiment of the present invention;

[0033] Figure 16 This is a three-dimensional diagram of a hula hoop in a semi-folded state according to a second embodiment of the present invention;

[0034] Figure 17 This is a three-dimensional diagram of a hula hoop in a folded state according to a second embodiment of the present invention;

[0035] Figure 18 This is a three-dimensional diagram of a hula hoop in an unfolded state according to a third embodiment of the present invention;

[0036] Figure 19 This is a three-dimensional diagram of a hula hoop in a semi-folded state according to a third embodiment of the present invention;

[0037] Figure 20 This is a three-dimensional diagram of a hula hoop in a folded state according to a third embodiment of the present invention;

[0038] Figure 21 This is a three-dimensional diagram of embodiment 4 of the present invention.

[0039] Among them: 1. Arc rod; 101. First convex strip; 102. Second convex strip; 103. Rotating sleeve; 104. Transition arc; 105. Inner rod; 106. Middle rod; 107. Outer rod; 108. Anti-slip protrusion; 109. T-shaped column; 2. Connector; 201. Shaft hole; 202. Slot 1; 203. First groove; 204. Slot 2; 205. Center column; 206. Second groove; 3. Locking piece; 4. Mounting slot; 5. Locking block; 6. Block; 7. Spring piece; 8. Mounting position; 9. First clamping area; 10. Second clamping area; 11. Third clamping area. Implementation Method

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention. Example 1:

[0041] See Figure 1-14, a quick-folding hula hoop, comprising several arc-shaped rods 1. In this example, the number of the arc-shaped rods 1 is six, and connecting parts 2 are provided at the end positions of two adjacent arc-shaped rods 1. The two ends of the connecting parts 2 are rotatably connected to the adjacent arc-shaped rods 1. When the arc-shaped rods 1 rotate to an extreme state relative to the connecting parts 2, the arc-shaped rods 1 and the connecting parts 2 are combined to form a circular ring structure. When the arc-shaped rods 1 rotate to another extreme state relative to the connecting parts 2, all the arc-shaped rods 1 are folded and retracted to make the hula hoop as a whole form a rugby ball shape for storage. At this time, the two adjacent connecting parts 2 originally in the circular ring state are respectively located at the two end positions of the rugby ball-shaped structure. In this retracted state, it is convenient for the user to quickly unfold the hula hoop. A locking structure is provided between the arc-shaped rods 1 and the connecting parts 2 for keeping the arc-shaped rods 1 and the connecting parts 2 relatively stationary in the two extreme states.

[0042] In the first extreme state mentioned above, the hula hoop unfolds into a circular structure, and the user can use the hula hoop for fitness. During this process, the locking structure can ensure that the arc rod 1 and the connecting part 2 on the hula hoop remain relatively stable; in the second extreme state mentioned above, the hula hoop is in a folded state. In this state, it can replace the segmented split structure in the existing technology, avoid the loss and wear of various components, and has the advantages of portability and reduced space occupancy.

[0043] The arc rod 1 is provided with a rotating shaft at both ends, and the rotating shaft is rotatably connected to the connecting member 2. The locking structure includes a clamping block arranged at the outer wall position of the rotating shaft, and a circumferentially distributed clamping groove is provided on the inner wall of the inner hole where the connecting member 2 and the rotating shaft cooperate. When the arc rod 1 rotates around the rotating shaft, the clamping block on the rotating shaft can be placed in the clamping groove at different positions, thereby realizing the expansion or storage of the arc rod 1.

[0044] More specifically, the rotating shaft is a rotating sleeve 103 protruding outwardly and arranged at both ends of the arc rod 1, and the clamping block includes a first ridge 101 arranged on the outer wall of the rotating sleeve 103 and protruding along its axial direction; the inner hole of the connecting member 2 is an axial hole 201 arranged at both ends of the connecting member 2 and capable of facilitating the insertion of the rotating sleeve 103, and the inner wall position of the axial hole 201 has a first groove 203 with an inward concave setting and facilitating the movement of the first ridge 101, and the clamping groove includes a clamping groove 1 202 and a clamping groove 204 arranged at both ends of the first groove 203 and further concave inwardly, as shown in FIG. Figure 3 、 6 As shown in Figure 9, after the connecting member 2 and the arc rod 1 are assembled, the arc rod 1 can rotate relative to the connecting member 2. During this process, the first protrusion 101 can move in the first groove 203. When the first protrusion 101 slides to the position of the first slot 202, the hula hoop is in an unfolded ring state. When the first protrusion 101 slides to the position of the second slot 204, the hula hoop is in a folded and closed state.

[0045] Among them, the connecting member 2 is a plastic part as a whole, the outer wall of the first protrusion 101 fits tightly with the inner wall of the first groove 203, and can cause the rotating sleeve 103 on the connecting member 2 to produce local deformation, so that the first protrusion 101 can move. When it moves to the slot 1 202 or the slot 2 204 on both sides, the local deformation generated returns to the initial state, and the first protrusion 101 is limited by the slot 1 202 and the slot 2 204.

[0046] Transition arcs 104 are provided on both side edges of the first protrusion 101, the edge of the card slot 1 202 close to the center of the first groove 203, and the edge of the card slot 2 204 close to the center of the first groove 203. The purpose of this arrangement is to enable the first protrusion 101 to be disengaged from the card slot 1 202 or the card slot 2 204 with a slight force at the moment of expansion or contraction, thereby avoiding the situation where the first protrusion 101 cannot be moved.

[0047] More specifically, the locking structure also includes a second ridge 102 arranged on the outer wall of the rotating sleeve 103 and symmetrically arranged relative to the first ridge 101, and a second groove 206 is provided on the inner wall of the shaft hole 201 of the connecting member 2 at a position symmetrical to the first groove 203, and the second ridge 102 is slidably arranged in the second groove 206; since the two side edges of the first ridge 101 both have a transition arc 104, the second ridge 102 without the transition arc 104 structure is provided to further play a role in stabilizing the limiting effect, thereby avoiding the problem of damage to the connecting member 2 and the arc rod 1 caused by excessive force.

[0048] Specifically, on both sides of the connecting member 2, a center column 205 protruding outward is provided at the center of the shaft hole 201. The center column 205 passes through the center hole of the rotating sleeve 103 and is connected to the locking member 3 installed on the arc rod 1. The edge of the locking member 3 has a convex ring, which can be clamped inside the arc rod 1 and has the freedom of rotation. More specifically, a screw is passed through the locking member 3 to connect the locking member 3 to the center column 205, thereby preventing the connecting member 2 from detaching from the arc rod 1. This structure belongs to the conventional technology in the prior art and will not be elaborated on here.

[0049] In addition, a bearing may be installed between the central column 205 and the rotating sleeve 103 to make the rotation more flexible.

[0050] Specifically, in another embodiment of the latching structure, Figure 10-12As shown, the locking structure includes locking blocks 5 installed at both ends of the connecting member 2 and rotating synchronously with the connecting member 2, and the outer wall of the locking block 5 has outwardly extending locking blocks 6 on both sides, wherein the two ends of the connecting member 2 have an annular rotating shaft, and the rotating shaft is provided with a mounting groove 4, the locking block 6 is located in the mounting groove 4 and extends to the outside of the mounting groove 4, when the connecting member 2 is docked with the arc rod 1, the locking block 5 and the connecting member 2 are in a relatively static connection structure.

[0051] At both ends of the arc rod 1, there are spring pieces 7 that match the block 6. Specifically, the spring piece 7 can be made of metal materials such as copper and stainless steel and has the ability to deform. It is installed at the installation position 8 at the end of the arc rod 1. After the connector 2 is docked with the arc rod 1, the spring piece 7 and the arc rod 1 are in a relatively static state. Figure 12 As shown, the spring piece 7 has a wavy structure, and at least three recessed locking areas are provided on the inner side of the spring piece 7. In this example, there are three locking areas, namely the first locking area 9, the second locking area 10 and the third locking area 11. The vertical distance between the intersection of two adjacent locking areas and the center of the locking block 5 is less than the vertical distance between the locking block 6 and the center of the locking block 5. When the locking block 6 is clamped into the locking areas at both ends of the spring piece 7, that is, in this example, the locking block 6 is clamped into the first locking area 9 and the third locking area 11, the arc rod 1 is in an unfolded or folded state relative to the connecting member 2.

[0052] The working principle of the above-mentioned locking structure is: when the arc rod 1 or the connecting member 2 is rotated, the locking block 5 can rotate relative to the spring piece 7, so that the locking block 6 moves from the locking area of ​​the initial position to the adjacent locking area. During this process, the locking block 6 can contact the intersection of the two adjacent locking areas and squeeze the spring piece 7, causing the spring piece 7 to produce local deformation. After continuing to rotate, the locking block 6 moves to the locking area at the end position, thereby realizing the folding, semi-folding and unfolding states of the hula hoop.

[0053] In order to save the hula hoop from the consumption of more force during the folding process, a rounded corner structure is provided on the clamping block 6 near one end of the spring 7 .

[0054] Specifically, the number of the arc-shaped rods 1 and the number of the connecting members 2 are the same, namely four, six, eight or ten. In this example, the number of the arc-shaped rods 1 and the number of the connecting members 2 are both six.

[0055] Specifically, the rotation center lines at both ends of the connecting member 2 are symmetrically arranged relative to the center of the connecting member 2, and the angle α between the two rotation center lines is 30°-90°. In this example, when the number of arc-shaped rods 1 is six, the angle α is 60°. At this angle, it is the optimal angle for the six arc-shaped rods 1, making rotation and folding more convenient.

[0056] Among them, the arc rod 1 includes an inner rod 105, an outer rod 107 and an intermediate rod 106, and the intermediate rod 106 is detachably connected to the inner rod 105 and the outer rod 107 respectively; more specifically, upwardly protruding T-shaped columns 109 are evenly arranged on the outer wall of the intermediate rod 106, and the middle of the T-shaped column 109 has an opening, and the outer rod 107 is connected to the T-shaped column 109 through a locking piece 3. This arrangement makes the overall structure of the arc rod 1 more stable. In addition, the arc rod 1 can also adopt other methods, such as an integrated structure.

[0057] The inner wall of the inner rod 105 is evenly provided with anti-slip protrusions 108 protruding inward, which can better increase the friction between the hula hoop and the human body during fitness and make the hula hoop rotate. Example 2:

[0058] like Figure 15-17 As shown, the only difference between this embodiment and the first embodiment is that the number of the arc-shaped rods 1 and the number of the connecting members 2 are both four. When the number of the arc-shaped rods 1 is four, the optimal angle α is 90°. Example 3:

[0059] like Figure 18-20 As shown, the only difference between this embodiment and the above two embodiments is that the number of the arc-shaped rods 1 and the number of the connecting members 2 are both eight. When the number of the arc-shaped rods 1 is eight, the optimal angle α is 45°. Example 4:

[0060] like Figure 21 As shown, the difference between this embodiment and the above two embodiments is that the number of the arc-shaped rods 1 and the number of the connecting members 2 are both ten. When the number of the arc-shaped rods 1 is ten, the angle α is 36°.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A quick-folding hula hoop, characterized by: The invention comprises a plurality of arc-shaped rods (1), wherein connecting members (2) are provided at the end positions of two adjacent arc-shaped rods (1), and a locking structure for keeping the arc-shaped rods (1) and the connecting members (2) relatively stationary in two extreme states is provided between the arc-shaped rods (1) and the connecting members (2), and the two ends of the connecting members (2) are rotatably connected to the adjacent arc-shaped rods (1). When the arc-shaped rods (1) are rotated relative to the connecting members (2) to one extreme state, the arc-shaped rods (1) and the connecting members (2) are combined to form a circular ring structure. When the arc-shaped rods (1) are rotated relative to the connecting members (2) to another extreme state, all the arc-shaped rods (1) are folded and gathered, so that the hula hoop is formed into a rugby shape as a whole for storage.

2. A quick-folding hula hoop according to claim 1, characterized in that: The arc rod (1) is provided with a rotating shaft at both ends, and the rotating shaft is rotatably connected to the connecting member (2). The locking structure includes a clamping block arranged at the outer wall position of the rotating shaft, and a circumferentially distributed clamping groove is provided at the inner wall of the inner hole where the connecting member (2) and the rotating shaft match. When the arc rod (1) rotates around the rotating shaft, the clamping block on the rotating shaft can be placed in the clamping groove at different positions, thereby realizing the expansion or storage of the arc rod (1).

3. A quick-folding hula hoop according to claim 2, characterized in that: The rotating shaft is a rotating sleeve (103) that is arranged at both ends of the arc rod (1) and protrudes outward, and the clamping block includes a first protrusion (101) that is arranged on the outer wall of the rotating sleeve (103) and protrudes along its axial direction; the inner hole of the connecting member is an axial hole (201) that is arranged at both ends of the connecting member (2) and can facilitate the insertion of the rotating sleeve (103), and the inner wall of the axial hole (201) has a first groove (203) that is concave and facilitates the movement of the first protrusion (101), and the clamping groove includes a first clamping groove (202) and a second clamping groove (204) that are arranged at both ends of the first groove (203) and further concave inward, and transition arcs (104) are provided at both side edges of the first protrusion (101), an edge position of the first clamping groove (202) close to the center of the first groove (203), and an edge position of the second clamping groove (204) close to the center of the first groove (203).

4. A quick-folding hula hoop according to claim 3, characterized in that: The clamping block further comprises a second convex strip (102) arranged on the outer wall of the rotating sleeve (103) and symmetrically arranged relative to the first convex strip (101); a second groove (206) is provided on the inner wall of the shaft hole (201) of the connecting member (2) at a position symmetrical to the first groove (203); and the second convex strip (102) is slidably arranged in the second groove (206).

5. The fast-folding hula hoop according to claim 3, characterized in that: Outwardly protruding center columns (205) are provided on both sides of the connecting member (2) at the center of the shaft hole (201). The center columns (205) pass through the center hole of the rotating sleeve (103) and are connected to the locking member (3) installed on the arc rod (1).

6. The fast-folding hula hoop according to claim 1, characterized in that: The locking structure comprises locking blocks (5) mounted at both ends of the connecting member (2) and rotating synchronously with the connecting member (2); the locking blocks (5) are provided with outwardly extending locking blocks (6) at both sides of the outer wall; and spring pieces (7) matching the locking blocks (6) are provided at both ends of the arc-shaped rod (1); the spring pieces (7) are of a wave-shaped structure, and at least three recessed locking areas are provided on the inner side of the spring piece (7); when the locking blocks (6) are locked into the locking areas at both ends of the spring piece (7), the arc-shaped rod (1) is in an unfolded or folded state relative to the connecting member (2).

7. The fast-folding hula hoop according to claim 1, characterized in that: The number of the arc-shaped rods (1) and the connecting members (2) is the same, namely four, six, eight or ten; the rotation center lines at both ends of the connecting member (2) are symmetrically arranged relative to the center of the connecting member (2), and the angle α between the two rotation center lines is 30°-90°.

8. The fast-folding hula hoop according to claim 7, characterized in that: When the number of the arc-shaped rods (1) is four, the included angle α is 90°; When the number of the arc-shaped rods (1) is six, the included angle α is 60°; When the number of the arc-shaped rods (1) is eight, the included angle α is 45°; When the number of the arc-shaped rods (1) is ten, the included angle α is 36°.

9. The fast-folding hula hoop according to claim 1, characterized in that: The arc-shaped rod (1) comprises an inner rod (105), an outer rod (107), and an intermediate rod (106); the intermediate rod (106) is detachably connected to the inner rod (105) and the outer rod (107), respectively; and anti-slip protrusions (108) protruding inwardly are evenly arranged on the inner wall of the inner rod (105).

Images