Technical Field

The invention relates to fitness equipment, in particular an abdominal exercise wheel.

Background

Existing abdominal exercise wheels are mostly composed of a supporting shaft and a wheel. The center of the wheel is mounted at the center of the supporting shaft and can rotate relative to the supporting shaft. When in use, the user grasps both ends of the supporting shaft and gradually bends forward to roll the wheels away from a starting position. Once the user has reached a limit, he/she then gradually returns to a stand-up position for the purpose of exercising the arms, waist, abdomen, and back. However, with the increase in exercise intensity, existing exercise wheels with simple structures cannot provide users with exercise methods of different intensities. In addition, existing exercise wheels are mostly fitted with a single wheel or two side-by-side wheels. For beginners, their body strength is relatively low, so it is difficult to master the balance, and they often fall onto the ground due to loss of balance.

Summary

The purpose of the invention is to provide an abdominal exercise wheel in which training intensity can be easily changed.

The technical solution for achieving the purpose of the present invention is: an abdominal exercise wheel, comprising: a supporting shaft; and two wheels mountable adjacently on the supporting shaft, wherein: the two wheels each have a first side surface and a second side surface, the first side surface and the second side surface of each of the two wheels extending generally perpendicularly to the axial direction of the supporting shaft when the respective wheels are mounted on the supporting shaft, the first side surfaces of the two wheels being configured to abut with each other when in use in a first configuration of the abdominal exercise wheel, the second side surfaces of the two wheels being configured to abut with each other when in use in a second configuration of the abdominal exercise wheel; and at least one or both of the first side surfaces is fitted with a barrier component, the barrier component(s) being configured such that the distance between the two wheels in the first configuration is greater than the distance between the two wheels in the second configuration.

The barrier component on the said first side surface of the wheel is a circular structure arranged coaxially with the wheel.

The barrier component on the said first side surface of the wheel is the first connecting tube coaxially arranged and has the same central aperture as the wheel.

When the two wheels are mounted on the supporting shaft in such a way that their second side surfaces are adjacent to each other, the second side surfaces of the two wheels are attached together.

The second side surface of the wheel has a groove surrounding the center of the second side surface, and the center of the second side surface has a second connecting tube, which has the same cross-sectional shape as the first connecting tube; the axial length of the said second connecting tube is not greater than the depth of the groove; the outer end surfaces of the said first connecting tube and the second connecting tube are both provided with a locking part; the two adjacent locking parts of the said two wheels are fitted to restrain circumferential rotation between the two wheels.

The locking part is the positioning teeth arranged equidistantly along the circumferential direction, and the circumferential distance between adjacent positioning teeth is the same as the circumferential length of the positioning teeth.

An anti-slip groove is provided on the outer peripheral surface of the wheel.

The two ends of the said supporting shaft are provided with detachable anti-slip sheaths. By adopting the technical solution provided herein, the present invention has the following beneficial effects:

(1) The wheels of this invention can be disassembled freely and mounted on the supporting shaft in different combinations. When both wheels are joined together with their first side surfaces adjacent to each other, there is a larger distance between them, which is suitable for beginners who cannot easily master the balance. When both wheels are joined together with their second side surfaces adjacent to each other, there is a smaller distance between them, which increases training intensity and is suitable for more advanced users. The abdominal exercise wheel is easy to adjust, since it does not need to be replaced as training intensity increases, and it can be widely applied.

(2) The barrier component of the present invention is a circular structure coaxially arranged with the wheel. The structure is simple and reliable, and the cost is low.

(3) The barrier component of the present invention is the first connecting tube which is arranged coaxially with the wheel and has the same central aperture. This can increase the contact area of the wheel with the supporting shaft and prevent the inner hole of the wheel from being deformed.

(4) When the two wheels of the present invention are mounted on the supporting shaft with the second side surfaces adjacent to each other, the second side surfaces of the two wheels are attached to each other, so that the two wheels are combined into a single wheel. This gives a more appealing appearance and enables more intense training.

(5) The outer end surfaces of the first connecting tube and the second connecting tube of the present invention are both provided with locking parts. After the two adjacent locking parts of the two wheels make contact and fit together, circumferential rotation between the two wheels are limited. This enables the two wheels to rotate synchronously when in use, which makes exercises more convenient.

(6) The locking parts of the present invention are equipped with equidistant positioning teeth, and the circumferential distance between adjacent positioning teeth is the same as the circumferential length of the positioning teeth. This can achieve multi-angle locking, and the locking method is simple and easy to operate.

(7) The outer peripheral surface of the wheels of the present invention is equipped with anti-slip grooves. This increases the friction between the wheels and surfaces, prevents injuries caused by accidental sliding when used on smooth tiles and other surfaces, and is more convenient and safer to use.

(8) The supporting shaft of the present invention is equipped with anti-slip sheaths, which not only increases friction and disperses pressure, but also restricts the position of the wheels. This prevents the wheels from sliding on the supporting shaft, and therefore prevents accidental injuries caused by sliding wheels. It is more convenient and safer to use.

Brief Description of Drawings

The invention may be performed in various ways, and an embodiment thereof will now be described by way of example only, reference being made to the accompanying drawings, in which:

Fig. 1 is a schematic diagram of the structure of the present invention.

Fig. 2 is a schematic diagram of the structure of the wheel of the present invention. Fig. 3 is a schematic diagram of the invention in use.

The numbered labels in the drawings are: Supporting shaft - 1, wheels - 2, first connecting tube - 3, second connecting tube - 4, positioning teeth - 5, anti-slip grooves - 6, and anti-slip sheath - 7.

Detailed Description

Referring to Figs. 1 to 3, the present embodiment of the abdominal exercise wheel includes a supporting shaft 1 and two wheels 2 adjacently mounted on the supporting shaft 1. Each wheel 2 has a first side surface and a second side surface perpendicular to the axial direction. A barrier component is provided on the first side surface. The barrier component is suitable for: the distance between the first side surfaces of the two wheels 2 when both wheels 2 are mounted on the shaft 1 with their first side surfaces adjacent to each other > the distance between the second side surfaces of the two wheels 2 when both wheels 2 are mounted on the shaft 1 with their second side surfaces adjacent to each other. In other words, the barrier components being configured such that the distance between the two wheels 2 in the first configuration is greater than the distance between the two wheels 2 in the second configuration.

In order to conveniently mount the wheels 2 on the supporting shaft 1, the barrier component on the first side surface of the wheel 2 is a circular structure coaxially arranged with the wheel 2. The structure is simple and reliable, with a low cost.

The barrier component on the first side surface of the wheel 2 is the first connecting tube 3, which is coaxially arranged with the wheel 2 and has the same central aperture. This lowers production cost, and the contact area between the wheels 2 and the supporting shaft

1 is increased to prevent the inner hole of wheel 2 from being deformed.

The preferred solution is: when the two wheels 2 are mounted on the supporting shaft 1 with their second side surfaces adjacent to each other, the second side surfaces of the two wheels 2 are attached to each other, so that both wheels 2 are combined into a single wheel. This gives a more appealing appearance and enables more intense training.

The second side surface of the wheel 2 is equipped with grooves surrounding the center of the second side surface, and the center of the second side surface is equipped with a second connecting tube 4 with the same cross-sectional shape as the first connecting tube tube 3. The axial length of the second connecting tube 4 is not greater than the depth of the groove. The outer end surfaces of the first connecting tube 3 and the second connecting tube 4 are both equipped with locking parts 5. After the two adjacent locking parts 5 of the two wheels

2 make contact and fit together, circumferential rotation between the two wheels 2 are limited. This enables the two wheels 2 to rotate synchronously when in use, which makes exercises more convenient.

The locking part 5 is the positioning teeth 5-1 arranged equidistantly in the circumferential direction, and the circumferential distance between adjacent positioning teeth 5-1 is the same as the circumferential length of the positioning teeth 5-1. This can achieve multi-angle locking, and the locking method is simple and easy to operate. The outer peripheral surface of the wheels of the present invention is equipped with antislip grooves 2-1. This increases the friction between the wheels 2 and surfaces, prevents injuries caused by accidental sliding when used on smooth tiles and other surfaces, and is more convenient and safer to use.

Both ends of the supporting shaft 1 are equipped with detachable anti-slip sheaths 1-1, which not only increases friction and disperses pressure, but also restricts the position of the wheels 2. This prevents the wheels 2 from sliding on the supporting shaft 1, and therefore prevents accidental hand injuries caused by sliding wheels 2. It is more convenient and safer to use.

The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the present invention. The invention, any modification, equivalent replacement and improvement, etc. made within the scope of the invention shall be included in the protective scope of the invention.

For example, instead of using a groves on the first and second side surfaces, other way so locking the two surfaces together can be implemented. For example, arrangements of magnets can be used so that the abutted first side surfaces and/or the abutted second side surfaces can be limited in their relative rotation and/or angular separation.

Various different barrier components can be used instead of connecting tubes. For example, an individual stalk (or a plurality of stalks) could be used to separate the first side surfaces of the respective wheels 2 from each other.

Further disclosure is provided: 