Four-wheel abdomen building device with reset function

Abstract

The utility model relates to the technical field of fitness equipment, particularly provides a four-wheel abdomen exercising device with a reset function, and aims to solve the problems that an abdomen exercising wheel in the prior art is complex in structure, high in production cost and not easy to control. The device comprises a supporting plate assembly and two rotating assemblies which are arranged at the front end and the rear end of the supporting plate assembly respectively. Each rotating assembly comprises two rolling wheels rotationally arranged on the left side and the right side of the supporting plate assembly. The reset assembly is arranged between the at least one set of rotating assembly and the supporting plate assembly; when the rotating assembly rotates in the forward direction, the reset assembly exerts reverse twisting force on the rotating assembly. The abdomen exercising device is formed by the supporting plate assembly and the four small rollers, so that the structure is simplified, and the production cost is reduced; and the four rollers form a very stable quadrilateral structure, so that the problem that an exerciser is difficult to master balance when using the abdomen exercising device is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fitness equipment, and in particular relates to a four-wheeled abdominal fitness device with a resetting function. Background Art

[0002] The ab wheel is a push-type fitness equipment. The exerciser's body stretches and contracts as the ab wheel rolls back and forth, thereby exercising the muscles in the abdomen or back. However, the use of the ab wheel has high requirements for the exerciser. When the exerciser applies force to the ab wheel to make it roll forward, the wheel is difficult to control, causing it to roll forward quickly. At this time, the exerciser's body also stretches quickly with the wheel, which can easily strain muscles. In addition, in order to keep the exerciser balanced during use, some ab wheels on the market use two rollers with wide wheel surfaces arranged side by side left and right or front and back, which increases production costs and increases the size and weight of the ab wheel. Utility Model Content

[0003] The utility model provides a four-wheeled abdominal fitness device with a resetting function, aiming to solve the problems in the prior art that the abdominal fitness wheel has a complex structure, a high production cost and is not easy to control.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] The utility model provides a four-wheeled abdominal strengthening device with a resetting function, comprising:

[0006] Support plate assembly;

[0007] Two groups of rotating components are respectively arranged at the front end and the rear end of the support plate component; each group of the rotating components includes two rollers rotatably arranged on the left and right sides of the support plate component;

[0008] The reset component is arranged between at least one group of the rotating components and the support plate component; when the rotating components rotate in the forward direction, the reset component applies a reverse torsional force to the rotating components.

[0009] A further solution: the support plate assembly includes a top plate; the two rollers in the rotating assembly located at the front end of the support plate assembly are respectively arranged on the left and right sides of the bottom of the top plate, and the two rollers in the rotating assembly located at the rear end of the support plate assembly are respectively arranged on the left and right sides of the bottom of the top plate.

[0010] Based on the above scheme, the top plate can be used to support the arms of the exerciser; two rollers are provided at the front end of the top plate, and two rollers are provided at the rear end of the top plate, thereby forming an abdominal fitness device with a relatively simple structure; and the four rollers are in a stable quadrilateral structure, which makes it easier for the exerciser to maintain balance and be more stable when using the abdominal fitness device; in addition, this scheme has a simple structure and is the lowest cost scheme.

[0011] A further solution: the support plate assembly includes a top plate and a bracket disposed below the top plate;

[0012] The two rollers in the rotating assembly at the front end of the support plate assembly are respectively arranged on the left and right sides of the front end of the bracket, and the two rollers in the rotating assembly at the rear end of the support plate assembly are respectively arranged on the left and right sides of the rear end of the bracket.

[0013] Based on the above solution, the bracket is used to support the top plate; in addition, the added bracket not only does not increase the complexity of the structure of the abdominal fitness device, but also allows the rotating component to be installed on the top plate and on the bracket, with low assembly cost.

[0014] A further solution: the bracket is composed of a group of support rod assemblies, and the support rod assembly is located below the middle part of the top plate;

[0015] Alternatively, the bracket is composed of two groups of support rod assemblies, and the two groups of support rod assemblies are respectively located on the left and right sides below the top plate.

[0016] Based on the above solution, the bracket is composed of one or two groups of support rods, which reduces the production cost.

[0017] A further solution: each group of the support rod assemblies includes at least one support rod or support tube arranged in the front-to-back direction; or each group of the support rod assemblies includes an I-beam arranged in the front-to-back direction.

[0018] Based on the above solution, the support rod assembly adopts the above structural solution to reduce costs.

[0019] A further solution: each group of the rotating components further includes a rotating shaft rotatably arranged below the top plate or on the bracket, and both ends of the rotating shaft are respectively circumferentially fixedly connected to the two rollers; the reset component is arranged between the rotating shaft and the top plate or the bracket;

[0020] When the reset assembly is provided in one group, the reset assembly is located in the middle of the bottom of the top plate;

[0021] When two groups of the reset components are provided, the reset components are respectively located at the left and right sides of the bottom of the top plate.

[0022] Based on the above solution, the rotating shaft makes the four rollers in a quadrilateral structure arranged below the top plate, which is more stable when combined with the position arrangement of the reset assembly.

[0023] A further solution: the reset assembly includes a coil spring or a disc spring, the coil spring or the disc spring is sleeved on the rotating shaft, and one end of the coil spring or the disc spring is connected to the rotating shaft, and the other end is connected to the top plate or the bracket; when the roller drives the rotating shaft to rotate in the forward direction, the coil spring or the disc spring applies a reverse torsional force to the rotating shaft.

[0024] Based on the above scheme, the rotating shaft rotates relative to the top plate or the bracket, thereby causing the coil spring or the disc spring connected to the rotating shaft and the top plate or the bracket to deform, thereby applying a reverse torsional force to the rotating shaft, thereby exerting a certain resistance effect on the roller rotating in the forward direction.

[0025] A further solution: each group of the rotating components also includes a rotating shaft fixedly arranged below the top plate or on the bracket; both ends of the rotating shaft are respectively rotatably connected to two rollers; and the reset component is provided between each rotating shaft and the roller.

[0026] Based on the above scheme, this scheme provides another structure for the installation of the reset component, and the reset component is located between the rotating shaft and the roller, so that when the roller rotates relative to the rotating shaft, the reset component located between the two applies a reverse torsional force to the roller, thereby exerting a certain resistance effect on the roller rotating in the forward direction.

[0027] A further solution: the support plate assembly further includes two handles, and the two handles can be respectively stored or fixedly arranged on the left and right sides of the top plate, or the two handles can be respectively stored or fixedly arranged on the left and right sides of the bracket.

[0028] Based on the above solution, the handle provides another way to support the exerciser, making it convenient for the exerciser to use the abdominal fitness device. In addition, the handle can be stored, which can reduce the floor space of the abdominal fitness device and reduce packaging and transportation costs.

[0029] A further solution: when the two handles can be respectively stored on the left and right sides of the top plate or the bracket, each handle includes an expanded state and a stored state, and each handle is switched between the expanded state and the stored state through a linkage component.

[0030] Based on the above scheme, the handle in the unfolded state can be convenient for the exerciser to hold; the handle in the retracted state can be conveniently retracted, so that the functions of the abdominal fitness device are diversified.

[0031] A further solution: the linkage assembly includes a connecting seat, a linkage rod and a driver;

[0032] The connecting seat is arranged at the bottom of the top plate or on the bracket; the connecting seat is provided with a positioning groove and a positioning portion;

[0033] The handle is rotatably arranged on the connecting seat, a positioning protrusion is arranged at one end of the linkage rod, and the positioning protrusion passes through the handle and is slidably arranged on the handle; a reset spring for resetting the positioning protrusion is also arranged on the linkage rod;

[0034] The driver is arranged outside the handle;

[0035] When the driver is pulled, the positioning protrusion is disengaged from the positioning groove or the positioning portion through the linkage rod, and the handle is switched between the unfolded state and the retracted state;

[0036] When the driver is released, the return spring drives the positioning protrusion to be located in the positioning groove or at the positioning portion;

[0037] When the positioning protrusion is located in the positioning groove, the handle is in an unfolded state;

[0038] When the positioning protrusion is located at the positioning portion, the handle is in a stored state.

[0039] Based on the above scheme, when the positioning protrusion is located in the positioning groove or at the positioning portion, the connecting seat can play a locking position, so that the handle is locked in the expanded state or the stored state, preventing the handle from shaking when in the expanded state and causing danger.

[0040] A further solution: a first return spring positioning portion is provided in the handle; a second return spring positioning portion is provided on the outer side wall of the linkage rod; the return spring is located between the first return spring positioning portion and the second return spring positioning portion;

[0041] The driver comprises a handle, which is hingedly arranged outside the handle and connected to the linkage rod; when the handle is tightly gripped, the handle drives the linkage rod to move outward, and the return spring is compressed;

[0042] When the handle is released, the return spring drives the positioning protrusion to be located in the positioning groove or at the positioning portion;

[0043] Alternatively, the driver includes a pull ring, which is connected to the linkage rod; when the pull ring is pulled, the pull ring drives the linkage rod to move outward, and the return spring is compressed;

[0044] When the pull ring is released, the return spring drives the positioning protrusion to be located in the positioning groove or at the positioning portion.

[0045] Based on the above solution, the driver is designed to be the handle or the pull ring with a simple structure, which simplifies the manufacturing process and can reduce costs.

[0046] The beneficial effects of the utility model are:

[0047] The utility model forms an abdominal fitness device through the support plate assembly and four small rollers, which simplifies the structure and reduces the production cost; and the four rollers form a very stable quadrilateral structure, which solves the problem that it is difficult for exercisers to maintain balance when using the abdominal fitness device.

[0048] In addition, a reset component is provided in the utility model, so that when the exerciser pushes the abdominal fitness device forward and drives the rotating component to rotate forward, the reset component applies a reverse torsional force to the rotating component and provides resistance to the rotating component that can rotate forward, so that the forward rotation rate of the rotating component decreases, thereby allowing the exerciser's body to slowly stretch forward with the abdominal fitness device, and the exerciser will not suddenly fall to the ground due to inability to control the abdominal fitness device, thereby avoiding the exerciser's muscle strain. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0050] Figure 1 This is a schematic structural diagram of a four-wheeled abdominal fitness device with a reset function according to the utility model;

[0051] Figure 2 This is a schematic diagram of the structure of the bottom of a four-wheeled abdominal fitness device with a reset function of the utility model;

[0052] Figure 3 This is a schematic diagram of the exploded structure of a four-wheeled abdominal fitness device with a reset function of the utility model;

[0053] Figure 4 It is a schematic diagram of the structure in which the reset assembly in the utility model is assembled in the support seat;

[0054] Figure 5 This is a schematic diagram of the structure of a four-wheeled abdominal fitness device with a resetting function when it is stored;

[0055] Figure 6 It is a cross-sectional schematic diagram of the switching assembly in the utility model;

[0056] Figure 7 yes Figure 6 A schematic diagram of the enlarged structure at A in the middle;

[0057] Figure 8 It is a structural schematic diagram of the handle of the second solution of the present invention when it is in an unfolded state;

[0058] Fig. 9 It is a structural schematic diagram of the handle of the utility model when it is in the storage state;

[0059] Fig.10 It is a structural schematic diagram of the handle of the first solution of the present utility model when it is in an unfolded state;

[0060] Fig.11 It is a cross-sectional schematic diagram of the linkage assembly when the handle of the utility model is in an unfolded state.

[0061] Description of the numbers in the figure:

[0062] 1-top plate; 11-arc-shaped enclosure; 2-support rod; 21-socket; 3-support seat; 4-connector; 41-slot; 5-roller; 6-rotating shaft; 7-coil spring; 8-handle; 81-connecting seat; 811-positioning groove; 812-positioning part; 82-rotating rod; 83-button; 84-linkage rod; 841-blocking ring; 842-linkage rod head; 85-reset spring; 86-accommodating groove; 87-V-shaped elastic plate; 88-positioning protrusion; 89-slide groove; 90-sleeve; 10-handle; 101-baffle. DETAILED DESCRIPTION

[0063] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the utility model.

[0064] like Figure 1-4 As shown, this embodiment provides a four-wheeled abdominal fitness device with a resetting function, comprising:

[0065] Support plate assembly;

[0066] Two groups of rotating components are respectively arranged at the front end and the rear end of the support plate component; each group of the rotating components includes two rollers 5 rotatably arranged on the left and right sides of the support plate component;

[0067] A reset component is arranged between at least one group of the rotating components and the support plate components; for example, the reset component is arranged only between the rotating component and the support plate component at the front end of the arm support plate; or, the reset component is arranged only between the rotating component and the support plate component at the rear end of the arm support plate; or, the reset component is arranged between the rotating component and the support plate component at the front end of the arm support plate and between the rotating component and the support plate component at the rear end of the arm support plate.

[0068] When the rotating component rotates in the forward direction, the resetting component applies a reverse torsional force to the rotating component.

[0069] The first design scheme for the specific structure of the abdominal strengthening device is:

[0070] like Figure 2 and Figure 3 As shown, the support plate assembly includes a top plate 1 and a bracket arranged below the top plate 1; the two rollers 5 in the rotating assembly located at the front end of the support plate assembly are respectively arranged on the left and right sides of the front end of the bracket, and the two rollers 5 in the rotating assembly located at the rear end of the support plate assembly are respectively arranged on the left and right sides of the rear end of the bracket.

[0071] The front and rear ends of the bracket are connected to a support seat 3 disposed transversely below the top plate 1, and the two rollers 5 in each set of the rotating assembly are respectively located at the left and right ends of the corresponding support seat 3. Each support seat 3 is provided with at least one connecting member 4, and the connecting member 4 is connected to the top plate 1; the bracket is connected to the support seat 3 through the connecting member 4, and the bracket is connected to the top plate 1 through the connecting member 4.

[0072] One example of the structure of the bracket is:

[0073] The bracket is composed of two groups of support rod assemblies, which are respectively located on the left and right sides below the top plate 1. As a preferred embodiment, each group of the support rod assemblies includes at least one support rod 2 or support tube arranged in the front-to-back direction. In order to reduce costs, the support tube or support rod 2 is preferably made of metal; as another preferred embodiment, each group of the support rod assemblies includes an I-beam arranged in the front-to-back direction.

[0074] The following takes the example that each group of the support rod assembly includes two support rods 2 arranged in the front-to-back direction, and the two support rods 2 are arranged in the up-down direction to explain the connection structure between the bracket and the support seat 3 and the connection structure between the bracket and the top plate 1:

[0075] like Figure 2 As shown, the connection structure between the bracket and the support seat 3 is specifically as follows: the four support rods 2 are respectively an upper left support rod, a lower left support rod, an upper right support rod and a lower right support rod. The two support seats 3 are respectively located at the front and rear ends of the four support rods 2, and the left and right ends of each support seat 3 are respectively connected to a connecting piece 4, the connecting piece 4 located at the left end of the support seat 3 is a left connecting piece, and the connecting piece 4 located at the right end of the support seat 3 is a right connecting piece; the two left connecting pieces are respectively connected to the front and rear front ends of the lower left support rod, and the two right connecting pieces are respectively connected to the front and rear ends of the lower right support rod.

[0076] like Figure 3 As shown, a more specific example of the above scheme is: each of the connecting members 4 is provided with a support seat mounting hole, and the end of the support seat 3 is inserted into the support seat mounting hole; each of the connecting members 4 is provided with a slot 41 at one end close to the support rod 2, and the end of the support rod 2 is inserted into the slot 41 and fixed by bolts or pins.

[0077] like Figure 2 As shown, the connection structure between the bracket and the top plate 1 is specifically as follows: the front and rear ends of the top plate 1 are provided with arc-shaped enclosure plates 11 opening downward, and the support seat 3 and the rollers 5 respectively arranged on the left and right sides of the support seat 3 are respectively located below the corresponding arc-shaped enclosure plates 11.

[0078] A more specific example of the above solution is: the upper left support rod is located between the corresponding connecting member 4 and the lower surface of the arc-shaped enclosure 11, and the connecting member 4, the arc-shaped enclosure 11 and the upper left support rod are fixed together by bolts or latches. The upper right support rod is located between the corresponding connecting member 4 and the lower surface of the arc-shaped enclosure 11, and the connecting member 4, the arc-shaped enclosure 11 and the upper right support rod are fixed together by bolts or latches.

[0079] Alternatively, each of the arc-shaped enclosure panels 11 is provided with two grooves opening upward, and each of the connecting members 4 is provided with a groove opening downward, the grooves opening downward on the connecting members 4 are arranged above the corresponding grooves opening upward on the upper enclosure of the arc-shaped enclosure panel 11, and form a support rod mounting groove for mounting the support rod 2, the ends of the upper left support rod and the upper right support rod are respectively inserted into the support rod mounting grooves, and the connecting members 4, the arc-shaped enclosure panels 11 and the support rod 2 are fixed together by bolts or pins.

[0080] Another example of the structure of the bracket is:

[0081] The bracket is composed of a group of support rod assemblies, and the support rod assemblies are located below the middle of the top plate 1. As a preferred embodiment, each group of the support rod assemblies includes at least one support rod 2 or support tube arranged in the front-to-back direction; as another preferred embodiment, each group of the support rod assemblies includes an I-beam arranged in the front-to-back direction.

[0082] Specifically, each of the support seats 3 is provided with a connecting member 4, and the support seat 3 passes through the support seat mounting hole on the connecting member 4 so that the connecting member 4 is arranged in the middle of the support seat 3, and the connecting member 4 is respectively connected to the bracket and the top plate 1, and the connection structure between the bracket and the support seat 3 and the connection structure between the bracket and the top plate 1 can refer to the above case content.

[0083] In addition, the structure of the bracket and the connection structure between the support seat 3 and the top plate 1 are not limited to the above two cases, but may also include cases of other structures. As long as the bracket can be fixed under the top plate 1 and can provide a structure that supports the top plate 1, it is within the protection scope of this application.

[0084] like Figure 4 As shown, based on any of the above solutions, one of the cases for the installation position of the reset component is:

[0085] Each group of the rotating components also includes a rotating shaft 6 rotatably arranged below the top plate 1, and the two rotating shafts 6 are rotatably arranged in the corresponding supporting seats 3, and both ends of each rotating shaft 6 pass through the supporting seats 3, and both ends of each rotating shaft 6 are respectively circumferentially fixedly connected to the two rollers 5; the reset component is arranged between the rotating shaft 6 and the supporting seats 3;

[0086] A more specific example of the above scheme is: when the reset component is provided in one group, the reset component is located in the middle position of the bottom of the top plate 1; it should be noted that the middle position of the bottom of the top plate 1 is the middle position of the bottom of the top plate 1 in the left-right direction.

[0087] When two groups of reset components are provided, the reset components are respectively located on the left and right sides of the bottom of the top plate 1. The reverse torsional force applied to the rotating shaft 6 by the two groups of reset components is greater than the reverse torsional force applied to the rotating shaft 6 by one group of reset components.

[0088] Preferably, the reset assembly can be a coil spring 7 or a disc spring; the coil spring 7 or the disc spring is located in the support seat 3 and sleeved on the rotating shaft 6, and one end of the coil spring 7 or the disc spring is connected to the rotating shaft 6, and the other end is connected to the inner wall of the support seat 3. When the roller 5 drives the rotating shaft 6 to rotate in the forward direction, the coil spring 7 or the disc spring applies a reverse torsional force to the rotating shaft 6.

[0089] Based on any of the above solutions, another example of the installation position of the reset component is:

[0090] Each group of the rotating components also includes a rotating shaft 6 fixedly arranged below the top plate 1; the two rotating shafts 6 are horizontally penetrated and fixed in the corresponding supporting seats 3, and both ends of each rotating shaft 6 pass through the supporting seats 3, and both ends of each rotating shaft 6 are respectively rotatably connected to the two rollers 5; and the reset component is provided between the rotating shaft 6 and the roller 5.

[0091] A more specific example of the above solution is that the reset component can be a coil spring 7 or a disc spring; the coil spring 7 or the disc spring is located in the connecting member 4 and sleeved on the rotating shaft 6, and one end of the coil spring 7 or the disc spring is connected to the end of the rotating shaft 6, and the other end is connected to the roller 5. When the roller 5 rotates forward relative to the rotating shaft 6, the coil spring 7 or the disc spring applies a reverse torsional force to the connected roller 5.

[0092] Based on any of the above schemes, the support plate assembly also includes two handles 8, which can be respectively stored or fixedly arranged on the left and right sides of the top plate 1, or the two handles 8 can be respectively stored or fixedly arranged on the left and right sides of the bracket.

[0093] When the two handles 8 are stowed on the top plate 1 or the support rod 2, each handle 8 includes an unfolded state and a stowed state, and each handle 8 switches between the unfolded state and the stowed state through a linkage assembly. The specific implementation structure includes the following two solutions:

[0094] Option 1: If Fig.10 and Fig.11 As shown, the linkage assembly includes a connecting seat 81, a linkage rod 84 and a driver; the connecting seat 81 is arranged at the bottom of the top plate 1 or the support rod 2; a positioning groove 811 and a positioning portion 812 are arranged on the connecting seat 81; the handle 8 is rotatably arranged on the connecting seat 81, one end of the linkage rod 84 is provided with a positioning protrusion 88, and the positioning protrusion 88 passes through the handle 8 and is slidably arranged on the handle 8; the linkage rod 84 is also provided with a reset spring 85 for resetting the positioning protrusion 88; the driver is arranged outside the handle 8;

[0095] Specifically, the connecting seat 81 is provided with a support rod mounting groove and a handle placement groove; the upper left support rod and the lower left support rod are arranged in the support rod mounting groove of the connecting seat 81 on the left side, and the upper right support rod and the lower right support rod are arranged in the support rod mounting groove of the connecting seat 81 on the right side, and the two handles 8 are respectively rotatably set on the corresponding connecting seat 81 through the rotating rod 82.

[0096] A sliding groove 89 is provided on the outer wall of the linkage rod 84 . When the handle 8 is in the unfolded state, the sliding groove 89 corresponds to the positioning groove 811 , and the positioning protrusion 88 is slidably disposed in the sliding groove 89 .

[0097] When the driver is pulled, the positioning protrusion 88 is disengaged from the positioning groove 811 or the positioning portion 812 through the linkage rod 84, and the handle 8 is switched between the unfolded state and the retracted state.

[0098] When the driver is released, the return spring 85 drives the positioning protrusion 88 to be located in the positioning groove 811 or at the positioning portion 812;

[0099] When the positioning protrusion 88 is located in the positioning groove 811, the handle 8 is in an unfolded state; the handle 8 is transversely located on the handle placement groove of the connecting seat 81 and extends outward relative to the top plate 1 or the support rod 2;

[0100] When the positioning protrusion 88 is located at the positioning portion 812, the handle 8 is in a retracted state; the left handle 8 is located between the upper left support rod and the lower left support rod, and the right handle 8 is located between the upper right support rod and the lower right support rod.

[0101] A more specific example of the above scheme is as follows: a first return spring positioning portion 812 is provided in the handle 8; a second return spring positioning portion 812 is provided on the outer wall of the linkage rod 84; and the return spring 85 is located between the first return spring positioning portion 812 and the second return spring positioning portion 812. The first return spring positioning portion 812 can be a sleeve 90 provided inside the handle 8, and one end of the linkage rod 84 away from the connecting seat 81 passes through the sleeve 90 and is provided outside the handle 8 and is provided with a linkage rod head 842. The second return spring positioning portion 812 can be a retaining ring 841 provided on the outer wall of the linkage rod 84; one end of the return spring 85 abuts against the outer wall of the sleeve 90, and the other end abuts against the retaining ring 841.

[0102] As a preferred solution, Fig.10As shown, the driver includes a handle 10, which is hingedly arranged outside the handle 8, and a baffle 101 is provided on the handle 10. The linkage rod 84 passes through the baffle 101, and the linkage rod head 842 is located outside the baffle 101; when the handle 10 is tightly gripped, the baffle 101 moves outward, driving the linkage rod head 842 to move outward, and driving the linkage rod 84 to move outward;

[0103] When the handle 10 is tightly gripped, the handle 10 drives the linkage rod 84 to move outward through the linkage rod head 842, the return spring 85 is compressed, the positioning protrusion 88 moves along the slide groove 89, and slides out of the positioning groove 811 or disengages from the positioning portion 812, and the handle 8 switches between the unfolded state and the stored state;

[0104] When the grip 10 is released, the return spring 85 drives the positioning protrusion 88 to move along the slide groove 89 and slide into the positioning groove 811 or locate at the positioning portion 812, thereby locking the handle 8 in the unfolded state or the retracted state.

[0105] As another preferred solution, the driver includes a pull ring, and the pull ring is connected to the linkage rod head 842;

[0106] When the pull ring is pulled, the pull ring drives the linkage rod 84 to move outward through the linkage rod head 842, the return spring 85 is compressed, the positioning protrusion 88 moves along the slide groove 89, and slides out of the positioning groove 811 or disengages from the positioning portion 812, and the handle 8 switches between the unfolded state and the stored state.

[0107] When the pull ring is released, the return spring 85 drives the positioning protrusion 88 to move along the slide groove 89 and slide into the positioning groove 811 or locate at the positioning portion 812, thereby locking the handle 8 in the unfolded state or the retracted state.

[0108] It should be noted that the positioning portion 812 may be a positioning groove or a friction surface located on the inner wall of the connecting seat 81. When the positioning portion 812 is a friction surface, the positioning protrusion 88 abuts against the friction surface, thereby keeping the handle 8 in the storage state.

[0109] Option 2: If Figure 2 and Figure 5As shown, one end of the two handles 8 is provided with a connecting seat 81, and the connecting seat 81 is arranged on the support rod 2. The connecting seat 81 is provided with a support rod mounting groove and a handle placement groove; the upper left support rod and the lower left support rod are arranged in the support rod mounting groove of the connecting seat 81 on the left side, and the upper right support rod and the lower right support rod are arranged in the support rod mounting groove of the connecting seat 81 on the right side, and the rotating ends of the two handles 8 are respectively rotatably set on the corresponding connecting seats 81 through rotating rods 82.

[0110] The connection seat 81 is provided with a positioning groove 811 for placing the handle 8 in an unfolded state and a socket 21 for placing the handle 8 in a retracted state.

[0111] like Figure 6-9 As shown, in order to realize that the handle 8 can be switched between the unfolded state and the stored state, a switching component for switching the handle 8 between the positioning groove 811 and the plug hole 21 is added to the handle 8. The switching component includes a plug-in portion and a pressing portion, the plug-in portion includes a locked state and an unlocked state, and the plug-in portion is switched between the locked state and the unlocked state by the pressing portion.

[0112] A more specific example of the above scheme is: the pressing part includes a pressing end located at the outer end of the handle 8 and a linkage end located inside the handle 8; an end of the linkage end away from the pressing end is provided with a receiving groove 86 opening toward the plug-in part; wherein, the pressing end can be a button 83 arranged at the outer end of the handle 8, the linkage end can be a linkage rod 84 arranged in the handle 8, and one end of the linkage rod 84 is connected to the button 83, and the receiving groove 86 is arranged on the end of the linkage rod 84 away from the button 83.

[0113] like Figure 6 and Figure 7 As shown, the plug-in portion includes a V-shaped elastic plate 87 located in the handle 8; the V-shaped elastic plate 87 includes two connecting plates, and the outer side walls of the two connecting plates are provided with a positioning protrusion 88 at one end close to the opening of the V-shaped elastic plate 87; the positioning protrusion 88 passes through the outer side wall of the handle 8, and the end of the two connecting plates on the V-shaped elastic plate 87 connected is set in the receiving groove 86;

[0114] The socket 21 is provided on the opposite side of the upper left support rod and the lower left support rod; when the handle 8 is in the storage state, the handle 8 is located in the socket 21; the socket 21 is provided on the opposite side of the upper right support rod and the lower right support rod. Each of the connecting seats 81 is provided with a positioning groove 811, and when the handle 8 is in the unfolded state, the two positioning protrusions 88 on the V-shaped elastic plate 87 are respectively detachably inserted into the positioning groove 811.

[0115] In the positioning groove 811, when the pressing end is not pressed, the two connecting plates on the V-shaped elastic plate 87 are away from each other, and the two positioning protrusions 88 are inserted into the positioning groove 811;

[0116] When the pressing end is pressed, the linkage end (linkage rod 84 ) moves downward and drives the two connecting plates on the V-shaped elastic plate 87 to approach each other, and the two positioning protrusions 88 are disengaged from the positioning grooves 811 .

[0117] In addition, a return spring 85 is sleeved on one end of the linkage rod 84 close to the button 83, and one end of the return spring 85 abuts against the lower surface of the button 83. When the button 83 is not pressed, the button 83 is reset under the elastic force of the return spring 85.

[0118] When the two handles 8 are fixedly disposed on the top plate 1 or the support rod 2 , the two handles 8 can be fixedly disposed on both sides of the top plate 1 or the support rod 2 by bolts.

[0119] In addition, the method of fixing the two handles 8 on the left and right sides of the top plate 1 or the bracket is not limited to the above case, and there may be other cases: for example, the handles 8 are integrally formed with the top plate 1 or the bracket. As long as the two handles 8 are arranged on the left and right sides of the top plate 1 or the bracket, they are all within the protection scope of this application.

[0120] The second design scheme for the specific structure of the abdominal fitness device is:

[0121] The support plate assembly includes a top plate 1; the two rollers 5 in the rotating assembly located at the front end of the support plate assembly are respectively arranged on the left and right sides of the bottom of the top plate 1, and the two rollers 5 in the rotating assembly located at the rear end of the support plate assembly are respectively arranged on the left and right sides of the bottom of the top plate 1.

[0122] Specifically, the front and rear ends of the top plate 1 are provided with arc-shaped enclosure plates 11 with openings facing downward, and the four rollers 5 are respectively located below the corresponding arc-shaped enclosure plates 11. Two rotating shafts 6 are fixedly connected to the bottom of each arc-shaped enclosure plate 11, and the two rotating shafts 6 are respectively rotatably connected to the two rollers 5; the reset assembly is provided between the rotating shaft 6 and the roller 5 below at least one arc-shaped enclosure plate 11.

[0123] The reset assembly may be a coil spring or a helical spring; one end of the helical spring 7 or the helical spring is connected to the rotating shaft 6, and the other end is connected to the roller 5. When the roller 5 rotates forward relative to the rotating shaft 6, the coil spring 7 or the helical spring applies a reverse torsional force to the connected roller 5.

[0124] On the basis of the above solution, the support plate assembly further includes two handles 8 , which are respectively arranged on the left and right sides of the top plate 1 .

[0125] The utility model is further described below in conjunction with the working principle:

[0126] When using the abdominal fitness device for exercise, the exerciser's arms can be supported on the top plate 1 or the exerciser's hands can be held on the two handles 8 to push the abdominal fitness device forward. The four rollers 5 on the abdominal fitness device rotate in the forward direction. The reset component applies a reverse torsional force to the forward rotating rollers 5. The exerciser's body slowly stretches forward with the abdominal fitness device. The four rollers 5 on the abdominal fitness device are arranged in a quadrilateral, which can help the exerciser to maintain balance well.

[0127] The training includes but is not limited to the following modes:

[0128] Mode 1: You can support your arms on the top plate 1 and use it as an abdominal wheel.

[0129] Mode 2: You can hold the handle 8 and use it as an abdominal wheel.

[0130] Mode 3: You can put your knees or feet on the top plate 1, support your arms on the ground, and do sit-ups.

[0131] The present utility model is not limited to the above optional implementation modes. Under the premise of not conflicting with each other, the various schemes can be combined arbitrarily. Anyone can derive other forms of products under the inspiration of the present utility model. However, no matter what changes are made in their shapes or structures, all technical schemes that fall within the scope defined by the claims of the present utility model fall within the protection scope of the present utility model.

Claims

1. A four-wheeled abdominal fitness device with a reset function, characterized in that: include: A support plate assembly, with a support portion provided on the top; Two groups of rotating components are respectively arranged at the front end and the rear end of the support plate component; each group of the rotating components includes two rollers rotatably arranged on the left and right sides of the support plate component; The reset component is arranged between at least one group of the rotating components and the support plate component; when the rotating components rotate in the forward direction, the reset component applies a reverse torsional force to the rotating components.

2. The four-wheeled abdominal fitness device with a reset function according to claim 1, characterized in that: The support plate assembly includes a top plate, and the support portion is arranged on the top plate; the two rollers in the rotating assembly located at the front end of the support plate assembly are respectively arranged on the left and right sides of the bottom of the top plate, and the two rollers in the rotating assembly located at the rear end of the support plate assembly are respectively arranged on the left and right sides of the bottom of the top plate.

3. The four-wheeled abdominal fitness device with a reset function according to claim 1, characterized in that: The support plate assembly comprises a top plate and a bracket arranged below the top plate, and the support portion is arranged on the top plate; The two rollers in the rotating assembly at the front end of the support plate assembly are respectively arranged on the left and right sides of the front end of the bracket, and the two rollers in the rotating assembly at the rear end of the support plate assembly are respectively arranged on the left and right sides of the rear end of the bracket.

4. The four-wheeled abdominal fitness device with a reset function according to claim 3, characterized in that: The support is composed of a group of support rod assemblies, and the support rod assembly is located below the middle part of the top plate; Alternatively, the bracket is composed of two groups of support rod assemblies, and the two groups of support rod assemblies are respectively located on the left and right sides below the top plate.

5. The four-wheeled abdominal fitness device with a resetting function according to claim 4, characterized in that: Each group of the support rod assemblies includes at least one support rod or support tube arranged in the front-to-back direction; or each group of the support rod assemblies includes an I-beam arranged in the front-to-back direction.

6. The four-wheeled abdominal fitness device with a resetting function according to claim 3, characterized in that: Each group of the rotating components also includes a rotating shaft rotatably arranged below the top plate or on the bracket, and the two ends of the rotating shaft are respectively circumferentially fixedly connected to the two rollers; the reset component is arranged between the rotating shaft and the top plate or the bracket; When the reset assembly is provided in one group, the reset assembly is located in the middle of the bottom of the top plate; When two groups of the reset components are provided, the reset components are respectively located at the left and right sides of the bottom of the top plate.

7. The four-wheeled abdominal fitness device with a reset function according to claim 6, characterized in that: The reset assembly includes a disc spring or a coil spring, which is sleeved on the rotating shaft, and one end of the disc spring or the coil spring is connected to the rotating shaft, and the other end is connected to the top plate or the bracket or a support seat arranged on the bracket; when the roller drives the rotating shaft to rotate in the forward direction, the coil spring or the disc spring applies a reverse torsional force to the rotating shaft.

8. The four-wheeled abdominal fitness device with a reset function according to claim 3, characterized in that: Each group of the rotating components also includes a rotating shaft fixedly arranged below the top plate or on the bracket; both ends of the rotating shaft are rotatably connected to two rollers respectively; and the reset component is arranged between each rotating shaft and the roller.

9. The four-wheeled abdominal fitness device with a resetting function according to claim 3, characterized in that: The support plate assembly also includes two handles, which can be stored or fixedly arranged on the left and right sides of the top plate, or the two handles can be stored or fixedly arranged on the left and right sides of the bracket.

10. The four-wheeled abdominal fitness device with a resetting function according to claim 9, characterized in that: When the two handles are respectively storable on the left and right sides of the top plate or the bracket, each handle includes an expanded state and a stored state, and each handle is switched between the expanded state and the stored state through a linkage component.

11. The four-wheeled abdominal fitness device with a resetting function according to claim 10, characterized in that: The linkage assembly comprises a connecting seat, a linkage rod and a driver; The connecting seat is arranged at the bottom of the top plate or on the bracket; the connecting seat is provided with a positioning groove and a positioning portion; The handle is rotatably arranged on the connecting seat, a positioning protrusion is arranged at one end of the linkage rod, and the positioning protrusion passes through the handle and is slidably arranged on the handle; a reset spring for resetting the positioning protrusion is also arranged on the linkage rod; The driver is arranged outside the handle; When the driver is pulled, the positioning protrusion is disengaged from the positioning groove or the positioning portion through the linkage rod, and the handle is switched between the unfolded state and the retracted state; When the driver is released, the return spring drives the positioning protrusion to be located in the positioning groove or at the positioning portion; When the positioning protrusion is located in the positioning groove, the handle is in an unfolded state; When the positioning protrusion is located at the positioning portion, the handle is in a stored state.

12. The four-wheeled abdominal fitness device with a reset function according to claim 11, characterized in that: A first return spring positioning portion is provided in the handle; a second return spring positioning portion is provided on the outer side wall of the linkage rod; the return spring is located between the first return spring positioning portion and the second return spring positioning portion; The driver comprises a handle, which is hingedly arranged outside the handle and connected to the linkage rod; when the handle is tightly gripped, the handle drives the linkage rod to move outward, and the return spring is compressed; When the handle is released, the return spring drives the positioning protrusion to be located in the positioning groove or at the positioning portion; Alternatively, the driver includes a pull ring, which is connected to the linkage rod; when the pull ring is pulled, the pull ring drives the linkage rod to move outward, and the return spring is compressed; When the pull ring is released, the return spring drives the positioning protrusion to be located in the positioning groove or at the positioning portion.

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