An abdominal wheel

Abstract

The present invention provides an abdominal wheel. The abdominal wheel comprises a wheel axle, a wheel body, a travel limit device and a resistance device. The travel limit device and the resistance device are arranged on the wheel axle and wrapped by the wheel body. After the wheel axle is rotated, the wheel body can rotate accordingly. The travel limit device comprises a limit sleeve and a guide sleeve. The limit sleeve is fixed to the wheel axle. A spiral track groove is arranged on the outer wall of the limit sleeve. The guide sleeve is provided with a central through hole. Two guide blocks extending from the inner wall of the central through hole of the guide sleeve are opposite and inserted into the spiral track groove. The guide blocks can move along the spiral track groove. The guide blocks are fixed to the wheel body and driven to rotate by the wheel body. The resistance device is provided with a coil spring fixing sleeve on the basis of the existing coil spring. The inner end of the coil spring is fixed to the arc-shaped clamping block of the coil spring fixing sleeve, which can effectively prevent the coil spring from breaking when it is stretched to the maximum stroke, thereby extending the service life of the abdominal wheel.

Description

Technical Field

[0001] The invention relates to a fitness device, in particular to an abdominal wheel. Background Art

[0002] The abdominal wheel is a small fitness device used to exercise the muscles of various parts of the body such as the abdomen, waist and buttocks, and arms. It is popular among people due to its good exercise effect, easy to carry, and not limited by the exercise venue. However, the traditional abdominal wheel is often not suitable for beginners to exercise because it has no travel limit and resistance function. In order to adapt to the exercise use of a wider group, some new abdominal wheels are also provided with travel limit and resistance functions, but their limit devices are mostly disc limit devices arranged on the wheel cover, which have complex structures and lack stability; and the central end of the coil spring of the existing resistance device is directly clamped on the axle of the abdominal wheel, but the clamping groove wall on the axle is thin, and the metal coil spring is directly connected to the clamping groove of the metal axle. When the coil spring is stretched to the maximum extent, it is easy to break the clamping part of the coil spring, which affects the service life of the abdominal wheel. Summary of the invention

[0003] In view of the defects of the existing abdominal wheel, the technical problems to be solved by the present invention are: the problem that the limiting sleeve in the existing abdominal wheel has a complex structure and weak stability; and the problem that the abdominal wheel has a short service life also needs to be solved.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, the present invention is implemented through the following technical measures: an abdominal wheel, comprising: a wheel axle, a wheel body, a stroke limit device and a resistance device, the stroke limit device and the resistance device are arranged on the wheel axle, the wheel body wraps the stroke limit device and the resistance device, the stroke limit device and the resistance device are used to control the stroke of the wheel body rotation and the size of the resistance of the rotation, and the wheel body can rotate after the wheel axle is rotated at the same time, the stroke limit device comprises a limit sleeve and a guide sleeve, the limit sleeve is fixed to the wheel axle, a spiral track groove is provided on the outer wall of the limit sleeve, the guide sleeve is provided with a center through hole, and two guide blocks extending from the inner wall of the center through hole of the guide sleeve are opposite to each other and inserted in the spiral track groove, the guide block can move along the spiral track groove, the guide block is fixed to the wheel body, and is driven to rotate by the wheel body.

[0005] The abdominal wheel is provided with a guide block on the guide sleeve, and the moving distance is set by the cooperation between the guide block and the spiral track groove on the limiting sleeve. The travel limiting device of this structure is very simple and reasonable.

[0006] Furthermore, the spiral track groove is open on one side and closed on the other side, and a limit pin is movably inserted into the open end of the spiral track groove.

[0007] Furthermore, the wheel body is fixed in sequence by a left wheel cover, an annular connector and a right wheel cover, and a center hole is provided in the center of the left wheel cover, the annular connector and the right wheel cover, and a bearing fixed to the wheel axle is provided in one of the center holes of the left wheel cover and the right wheel cover, and two opposing sliding strips are provided in the other center hole, and a sliding groove for the sliding strip to be engaged is provided on the outer wall of the guide sleeve.

[0008] Furthermore, the slide groove is opposite to the guide block inside and outside.

[0009] Furthermore, a plurality of screw fixing columns are arranged around the inner circle of the annular connector, and bolt fixing columns opposite to the screw fixing columns are arranged in the left wheel cover and the right wheel cover, and are fixed by screws passing through the bolt fixing columns and the screw fixing columns at the same time. The resistance device includes a coil spring fixing sleeve, a coil spring and a coil spring housing, and the coil spring housing is composed of a left baffle plate, a right baffle plate and an annular cavity therebetween, the left and right baffle plates are used to close the two ends of the annular cavity, and the diameters of the left and right baffle plates are larger than the diameter of the annular cavity, the left baffle plate and the right baffle plate are provided with a center hole in the center, and a plurality of screw fixing columns are arranged around the outer circle. The coil spring housing is provided with a semicircular slot evenly distributed therein, and a coil spring fixing slot is provided on the side wall of the annular cavity. The coil spring housing is provided in the annular connector, and the semicircular slots on the two baffles of the coil spring housing are tightly clamped on the screw column in the annular connector, so that the coil spring housing is fixed to the annular connector. The coil spring fixing sleeve is a sleeve seat with openings at both ends and a hollow interior, which passes through the axle and is fixed on the axle. An arc-shaped clamping block is provided on the outer wall of the coil spring fixing sleeve, and the coil spring fixing sleeve is placed in the center of the coil spring housing. The coil spring is provided in the coil spring housing, and the outer end of the coil spring is fixed in the coil spring fixing slot, and the inner end of the coil spring is fixed on the arc-shaped clamping block. The above structural design, a coil spring fixing sleeve was once provided on the existing abdominal wheel resistance device, and the inner end of the coil spring passed through the strip slot and then inserted into the arc slot and fixed on the arc-shaped clamping block, which can effectively prevent the coil spring from breaking when it is stretched to the maximum stroke, thereby extending the service life of the abdominal wheel.

[0010] Furthermore, an axial strip groove is provided on the outer wall of the coil spring fixing sleeve, and an arc groove is provided on the bottom of the strip groove in a circumferential direction on one side. An arc-shaped clamping block is formed on the coil spring fixing sleeve through the strip groove and the arc groove, and the inner end of the coil spring passes through the strip groove and then is inserted into the arc groove for fixation.

[0011] Compared with the prior art, the advantages of the present invention are: by setting the travel limit device as a guide sleeve that rotates and slides back and forth along the limit sleeve, its structure is simple and stable. At the same time, a coil spring fixing sleeve is provided on the existing abdominal wheel resistance device. The inner end of the coil spring passes through the strip groove and then is inserted into the arc groove and fixed on the arc clamping block. This can effectively prevent the coil spring from breaking when it is stretched to the maximum stroke, thereby extending the service life of the abdominal wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 This is an exploded view of the parts of the abdominal wheel described in the present invention.

[0014] Figure 2 It is a schematic structural diagram of the travel limit device described in the present invention.

[0015] Figure 3 This is a schematic diagram of the structure of the resistance device described in the present invention.

[0016] Explanation of the accompanying drawings: 1. axle; 2. wheel body; 3. travel limit device; 4. resistance device; 5. limit sleeve; 6. guide sleeve; 7. spiral track groove; 8. guide block; 9. limit pin hole; 10. slide groove; 11. left wheel cover; 12. annular connector; 13. right wheel cover; 14. bearing; 15. slide bar; 16. screw fixing column; 17. bolt fixing column; 18. coil spring fixing sleeve; 20. coil spring housing; 21. left baffle; 22. right baffle; 23. annular cavity; 24. semicircular slot; 25. coil spring fixing slot; 26. strip slot; 27. arc slot; 28. handle. DETAILED DESCRIPTION

[0017] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0018] In the description of the present invention, it is necessary to understand that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "bottom", "top", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example

[0019] Please refer to Figure 1The present embodiment provides an abdominal wheel including a wheel body 2, a wheel axle 1, a handle 28, a resistance device 4 and a stroke limit device 3. The wheel body 2 includes a left wheel cover 11, a right wheel cover 13 and an annular connector 12 therebetween. A plurality of screw fixing columns 16 are fixed around the inner circle of the annular connector 12. A center hole is opened in the center of the left wheel cover 11 and the right wheel cover 13. Bolt fixing columns 17 corresponding to the screw fixing columns 16 are fixed around the outer circle of the center hole. The left wheel cover 11 and the right wheel cover 13 are respectively fixed to the screw fixing columns 16 of the annular connector 12 by passing screws through the bolt fixing columns 17. A shaft sleeve extends outward from the center hole of the right wheel cover 13. Two symmetrical slide strips 15 extend toward the center of the circle on the inner side wall of the shaft sleeve. The center hole of the left wheel cover 11 is fixed to the wheel axle 1 through a bearing 14, and handles 28 are fixed to both ends of the wheel axle 1 outside the two wheel covers.

[0020] Please refer to Figure 2 The travel limit device 3 includes a limit sleeve 5 and a guide sleeve 6. The limit sleeve 5 is fixed on one side of the center of the wheel axle 1. A spiral track groove 7 extending along the outer wall is opened on the outer wall of the limit sleeve 5. The left end of the spiral track groove 7 is closed and the right end is open. A limit pin hole 9 is opened at the bottom of the open end groove, and a limit pin is inserted in the limit pin hole 9. Two opposite guide blocks 8 are arranged on the inner wall of the guide sleeve 6. A slide groove 10 opposite to the guide block 8 inside and outside is opened on the outer wall of the guide sleeve 6. The guide sleeve 6 is sleeved outside the limit sleeve 5, and the guide block 8 on the inner wall of the guide sleeve 6 is inserted in the spiral track groove 7 of the limit sleeve 5. At the same time, the guide sleeve 6 is inserted in the sleeve of the right wheel cover 13. The two slide grooves 10 on the outer wall of the guide sleeve 6 are clamped on the two slide bars 15 of the sleeve and can slide back and forth along the slide bar 15.

[0021] Please refer to Figure 3, a resistance device 4 is fixed on the other side of the center of the wheel shaft 1, and the resistance device 4 includes a coil spring fixing sleeve 18, a coil spring and a coil spring housing 20. The coil spring housing 20 is composed of a left baffle 21, a right baffle 22 and an intermediate annular cavity 23. The left baffle 21 and the right baffle 22 respectively close the two ends of the annular cavity 23, and the diameters of the left and right baffles are larger than the diameter of the annular cavity 23. The left baffle 21 and the right baffle 22 have a center hole in the center, and a plurality of evenly distributed semicircular grooves 24 are opened around the periphery. A coil spring fixing groove 25 is opened on the side wall of the annular cavity 23. The coil spring fixing groove 25 is used to fix the outer end of the coil spring. The coil spring housing 20 is arranged in the annular connector 12, and the semicircular grooves on the two baffles of the coil spring housing 20 are The clamping groove 24 is tightly clamped on the screw fixing column 16 on the inner ring side wall of the annular connector 12, so that the coil spring housing 20 is fixed to the annular connector 12. The above-mentioned coil spring fixing sleeve 18 is a sleeve seat with openings at both ends and a hollow interior, which is fixed to the wheel axle 1. An axial strip groove 26 is opened on the top outer wall of the coil spring fixing sleeve 18, and an arc groove 27 is cut in the circumferential direction of one side at the bottom of the strip groove 26, so that one side of the strip groove 26 on the side wall of the coil spring fixing sleeve 18 forms an arc-shaped clamping block. The above-mentioned coil spring fixing sleeve 18 passes through the center hole of the right baffle 22 and is placed in the center of the coil spring housing 20. The above-mentioned coil spring is placed in the coil spring housing 20, and the inner end of the coil spring passes through the strip groove 26 and then inserted into the arc groove 27 to be fixed on the arc-shaped clamping block.

[0022] The abdominal wheel provided in this embodiment has a limiting sleeve 5 fixed on one side of the center of the wheel shaft 1, and a spirally extending spiral track groove 7 is provided on the limiting sleeve 5. One end of the spiral track groove 7 is closed and the other end is open. A guide sleeve 6 is arranged outside the limiting sleeve 5, and a guide block 8 inserted in the spiral track groove 7 is arranged inside the guide sleeve 6. The guide block 8 rotates from the open end of the spiral track groove 7 to enter the spiral track groove 7, and then the opening of the spiral track groove 7 is closed by inserting a limiting pin in a limiting pin hole 9 at the open end of the spiral track groove 7. The two slide bars 15 on the right wheel cover 13 are clamped in the two slide grooves 10 on the outer wall of the guide sleeve 6. After the wheel body 2 rolls on the ground, it simultaneously drives the guide The guide sleeve 6 rotates, and the guide block 8 of the guide sleeve 6 spirally moves along the spiral track groove 7 of the limiting sleeve 5. When it hits the limit pins at the closed end and the open end of the spiral track groove 7, the wheel body 2 has a maximum rolling stroke. When the guide sleeve 6 rotates back and forth along the spiral track groove 7 of the limiting sleeve 5, the guide sleeve 6 slides back and forth along the slide bar 15 at the same time. It has a simple structure and strong stability. At the same time, the resistance device 4 is provided with a coil spring fixing sleeve 18 on the existing abdominal wheel resistance device. The inner end of the coil spring passes through the strip groove 26 and then is inserted into the arc groove 27 and fixed on the arc clamping block, which can effectively prevent the coil spring from breaking when it is stretched to the maximum stroke, thereby extending the service life of the abdominal wheel.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An abdominal wheel, comprising: A wheel axle, a wheel body, a stroke limit device and a resistance device, wherein the stroke limit device and the resistance device are arranged on the wheel axle, the wheel body wraps the stroke limit device and the resistance device, the stroke limit device and the resistance device are used to control the stroke of the wheel body rotation and the size of the rotation resistance, and the wheel body can rotate with the wheel axle after the wheel axle is rotated, characterized in that: the stroke limit device includes a limit sleeve and a guide sleeve, the limit sleeve is fixed to the wheel axle, a spiral track groove is arranged on the outer wall of the limit sleeve, the guide sleeve is provided with a central through hole, and two guide blocks extending from the inner wall of the central through hole of the guide sleeve are opposite and inserted in the spiral track groove, the guide block can move along the spiral track groove, the guide block is fixed to the wheel body, and is driven to rotate by the wheel body; The wheel body is fixed by a left wheel cover, an annular connector and a right wheel cover in sequence. The left wheel cover, the annular connector and the right wheel cover are all provided with a center hole in their centers. A bearing fixed to the wheel axle is provided in one of the center holes of the left wheel cover and the right wheel cover, and two opposing slide bars are provided in the other center hole. A slide groove for the slide bar to be engaged is provided on the outer wall of the guide sleeve. A plurality of screw fixing columns are arranged around the inner circle of the annular connector, and bolt fixing columns opposite to the screw fixing columns are arranged in the left wheel cover and the right wheel cover, and are fixed by screws passing through the bolt fixing columns and the screw fixing columns at the same time. The resistance device includes a coil spring fixing sleeve, a coil spring and a coil spring housing, and the coil spring housing is composed of a left baffle plate, a right baffle plate and an annular cavity therebetween. The left and right baffle plates are used to close the two ends of the annular cavity, and the diameters of the left and right baffle plates are larger than the diameter of the annular cavity. A center hole is arranged in the center of the left baffle plate and the right baffle plate, and a plurality of uniform plates are arranged around the periphery. The semicircular grooves are distributed, and the side wall of the annular cavity is provided with a coil spring fixing groove. The coil spring housing is arranged in the annular connecting body, and the semicircular grooves on the two baffles of the coil spring housing are tightly clamped on the screw columns in the annular connecting body to fix the coil spring housing and the annular connecting body. The coil spring fixing sleeve is a sleeve seat with openings at both ends and a hollow interior. It passes through the wheel axle and is fixed on the wheel axle. An arc-shaped clamping block is provided on the outer wall of the coil spring fixing sleeve. The coil spring fixing sleeve is placed in the center of the coil spring housing. The coil spring is arranged in the coil spring housing, the outer end of the coil spring is fixed in the coil spring fixing groove, and the inner end of the coil spring is fixed on the arc-shaped clamping block.

2. The abdominal wheel according to claim 1, characterized in that: The spiral track groove is open on one side and closed on the other side, and a limit pin is movably inserted at the open end of the spiral track groove.

3. The abdominal wheel according to claim 1, characterized in that: The sliding groove is opposite to the guide block inside and outside.

4. The abdominal wheel according to claim 1, characterized in that: An axial strip groove is provided on the outer wall of the coil spring fixing sleeve, and an arc groove is provided on the bottom of the strip groove in a circumferential direction on one side. An arc-shaped clamping block is formed on the coil spring fixing sleeve through the strip groove and the arc groove. The inner end of the coil spring passes through the strip groove and then is inserted into the arc groove for fixation.

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