Fitness pole

Abstract

To provide a fitness stick that is not only advantageous for a common grip design but also has a comfortable, strong grip when in use and is difficult to come off. [Solution] A fitness rod comprising a rod body 1 and a grip 2, the rod body having a coil spring structure and integrally molded with a vibrating section, a transition section, and a connecting section, the vibrating section and the connecting section both being cylindrical coil spring shaped, the transition section being conical coil spring shaped tapering from the vibrating section to the connecting section, the grip being fixedly connected to the connecting section, and when the fitness rod is swung or rocked by holding the grip, the vibrating section can be elastically vibrated in the direction of the swing or rocking. The fitness rod's tapered design at the connecting section is not only advantageous for a standardized grip design, but also makes the grip comfortable, strong, and difficult to come off during use.

Description

[Technical Field]

[0001] The present invention relates to the field of fitness equipment, and more particularly to fitness bars. [Background technology]

[0002] Chinese Patent Publication CN222163177U discloses a connecting structure for a fitness device. It comprises a detachable grip and an elastic rod with a spring part connected to the grip. The grip has a mounting boss with a spiral groove on its outer periphery. The spring part is fitted into the mounting boss and engages with the spiral groove. The spring part engages with the spiral groove to fix the grip and the elastic rod relative to each other. The reciprocating motion of the grip is controlled by the spring part, which vibrates the grip.

[0003] This structure, in which the elastic rods are designed with a single, uniform diameter, has the following drawbacks: First, the grips cannot be standardized between elastic rods of different diameters, making replacement and maintenance inconvenient and wasting resources. Second, the grips are too thick, especially for fitness bars with large elastic rod diameters, which can make the user's grip uncomfortable, reduce grip strength, cause deformation in movement, and reduce exercise efficiency. Third, the length of the connection between the elastic rod and the grip is too short, resulting in a small contact area between the two and a weak connection, making it easy for the rod to come loose during use. Summary of the Invention [Problem to be solved by the invention]

[0004] The purpose of this invention is to overcome the shortcomings of the prior art by providing a fitness rod that uses an integrated coil spring structure design with different diameters, which is not only advantageous for standardizing the grip design, but also makes the fitness rod comfortable to hold when in use, powerful, and the grip connection is strong and difficult to come off. [Means for solving the problem]

[0005] The objective of this invention is achieved by the following technical solutions.

[0006] A fitness rod is provided that includes a rod body and a grip, wherein the rod body has a coil spring structure and is integrally molded with a vibrating section, a transition section, and a connecting section that are connected in sequence, the vibrating section and the connecting section both being cylindrical coil spring-shaped, the outer diameter and pitch dimensions of the connecting section being smaller than the outer diameter and pitch dimensions of the vibrating section, respectively, the transition section being conical coil spring-shaped that narrows from the vibrating section to the connecting section, the grip being detachably or non-detachably fixedly connected to the connecting section, and when the fitness rod is swung or rocked by holding the grip, the vibrating section can be elastically vibrated in the direction of the swinging or rocking.

[0007] Furthermore, the pitch dimension of the transition portion is the same as the pitch dimension of the connecting portion, and the length dimension of the vibration portion is at least twice the length dimension of the connecting portion, and the length dimension of the transition portion is smaller than the length dimension of the connecting portion.

[0008] Furthermore, the vibration part, the transition part, and the connecting part are integrally made of a metal spring wire, the pitch dimension of the transition part and the connecting part is the same as the diameter dimension of the metal spring wire, and the pitch dimension of the vibration part is at least twice the diameter dimension of the metal spring wire.

[0009] In one embodiment, the grip includes a grip tip, a grip body, and a grip rear end that are integrally molded and connected in sequence, the grip tip, the grip body, and the grip rear end are all located on the same axis, and the outer diameter dimension of the grip body is smaller than the outer diameter dimensions of the grip tip and the grip rear end.

[0010] Furthermore, the grip has a hollow cavity that opens to the grip tip, the hollow cavity is located at the open end and has a first chamber for accommodating the transition portion and a second chamber for accommodating the connecting portion, the shape of the first chamber matches the outer shape of the transition portion, the first chamber is in communication with the second chamber and is located on the same axis.

[0011] Preferably, the inner wall of the second chamber is provided with a first spiral groove that fits onto the outer circumferential surface of the coupling portion to achieve threaded engagement between the grip and the coupling portion. Preferably, the hollow cavity further includes a third chamber located within the rear end of the grip, communicating with the second chamber and positioned on the same axis, and a first connecting post is integrally molded within the third chamber and extending toward the second chamber, the first connecting post being fitted into the inner diameter of the connecting portion, and the outer wall of the first connecting post being provided with a second spiral groove that fits into the inner surface of the connecting portion to achieve threaded engagement between the grip and the connecting portion.

[0012] In another embodiment, the grip includes a grip tip, a grip body, and an end cap that are arranged sequentially and positioned on the same axis, the grip tip is integrally molded with the grip body, the end cap is arranged separately from the grip body, the outer diameter dimension of the grip body is smaller than the outer diameter dimensions of the grip tip and the end cap, the grip tip is exteriorly mounted on the transition portion, and the grip body is exteriorly mounted on the connection portion.

[0013] Preferably, the end cap is provided with a second connecting post extending toward the tip of the grip, the second connecting post being fitted within the inner diameter of the connecting portion, and the outer wall of the second connecting post is provided with a third spiral groove that fits into the inner surface of the connecting portion to threadably engage the end cap with the connecting portion, and the inside of the end cap is pressed against the grip body, preventing the grip body from coming off the connecting portion.

[0014] Preferably, the end of the connecting portion protrudes from the rear end of the grip body, and the inner wall of the end cap is provided with a fourth spiral groove that fits the outer surface of the protruding portion of the end of the connecting portion to threadably engage the protruding portion of the end of the connecting portion with the end cap, and the inside of the end cap is pressed against the grip body to prevent the grip body from coming off the connecting portion. [Effects of the Invention]

[0015] Compared with the prior art, the present invention has the following beneficial effects: The rod body of the fitness bar of this invention employs a one-piece coil spring structure design with different diameters, which is more rational and reliable than the prior art. Specifically, the transition section employs a tapered structure from the vibrating section to the connecting section. Therefore, to accommodate the needs of fitness bars with different diameters, it is sufficient to design multiple vibrating sections with different diameters, while the connecting sections can be made of the same diameter. By designing a grip that matches the connecting sections, it can be used for a variety of different diameters of fitness bars, thereby saving resources, reducing costs, and improving product maintenance. Meanwhile, the grip can be made more reasonable in thickness to match the tapered design of the connecting section, which is beneficial for improving the comfort of the fitness bar, ensuring grip strength, and minimizing adverse effects on movement. Furthermore, the axial connection length between the rod body and the grip is longer, which increases the contact area between the grip and the rod body, improving the connection strength between the grip and the rod body and preventing loosening during use. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a cross-sectional view of a fitness bar according to the present invention; [Figure 2] FIG. 2 is a schematic diagram of the rod body of the present invention. [Figure 3] FIG. 2 is a schematic diagram of a partially enlarged cross-sectional view of the vibrating part of the rod body of the present invention. [Figure 4] FIG. 2 is a schematic diagram of a cross-sectional view of the transition section of the rod body of the present invention, partially enlarged. [Figure 5] FIG. 2 is a schematic diagram of a partially enlarged cross-sectional view of the connecting portion of the rod body of the present invention. [Figure 6] 1 is a cross-sectional view of a grip according to a first embodiment of the present invention; [Figure 7] 1 is a cross-sectional view of a fitness bar according to a second embodiment of the present invention; [Figure 8] FIG. 8 is a partially enlarged schematic view of A in FIG. 7. [Figure 9] 10 is a cross-sectional view of a fitness bar according to a third embodiment of the present invention; FIG. [Figure 10] FIG. 10 is a partially enlarged schematic view of B in FIG. 9. [Figure 11] 10 is a cross-sectional view of a fourth embodiment of the fitness bar of the present invention; FIG. DETAILED DESCRIPTION OF THE INVENTION

[0017] The present invention will be described in more detail below based on the embodiments shown in the accompanying drawings.

[0018] As shown in Figures 1 to 6, the first embodiment of the fitness bar of the present invention includes a rod body 1 and a grip 2. The rod body 1 has a coil spring structure, and the rod body 1 is integrally molded with a vibrating section 11, a transition section 12, and a connecting section 13, which are connected in series. The vibrating section 11 and the connecting section 13 are both cylindrical coil springs, and the outer diameter D1 and pitch T1 of the connecting section 13 are smaller than the outer diameter D2 and pitch T2 of the vibrating section 11, respectively. The transition section 12 has a conical coil spring shape that tapers from the vibrating section 11 to the connecting section 13, and the grip 2 is fixedly connected to the connecting section 13 in a detachable or non-detachable manner. Removable connections include methods such as threading and engagement, which are used in the present invention (not shown). Non-detachable fixed connections can be made by welding, integral injection molding, or other methods (not shown). When the fitness bar is swung or rocked by gripping the grip 2, the vibration part 11 can be elastically vibrated in the direction of the swinging or rocking.

[0019] The pitch dimension T3 of the transition portions 12 is the same as the pitch dimension T1 of the connecting portions 13. The length dimension of the vibrating portions 11 is at least twice the length dimension of the connecting portions 13, and the length dimension of the transition portions 12 is smaller than the length dimension of the connecting portions 13.

[0020] The grip 2 is made of plastic, and the vibration section 11, transition section 12, and connecting section 13 are integrally formed from metal spring wire. The pitch dimension T1 of the connecting section 13 and the pitch dimension T3 of the transition section 12 are both equal to the diameter dimension D of the metal spring wire, meaning that two adjacent coils of the connecting section 13 and the transition section 12 are stacked, which increases the structural strength of these two sections and increases the contact area between the grip 2 and the rod body 1, making it less likely that the rod body 1 and the grip 2 will come off.

[0021] The pitch dimension T2 of the vibrating part 11 is at least twice the diameter dimension D of the metal spring wire. The pitch dimension T2 of the vibrating part 11 is preferably between three and eight times the diameter dimension D of the metal spring wire, which provides better bending and inertia in the vibrating part 11 when a fitness bar is used.

[0022] The grip 2 includes a grip tip 21, a grip body 22, and a grip rear end 23, which are integrally molded and connected in sequence. The grip tip 21, the grip body 22, and the grip rear end 23 are all located on the same axis. The outer diameter of the grip body 22 is smaller than the outer diameters of the grip tip 21 and the grip rear end 23. This prevents the hand from slipping off the grip 2 when using the fitness bar, improving product safety.

[0023] The grip 2 has a hollow cavity that opens to the grip tip 21. The hollow cavity includes a first chamber 24 located at the open end for accommodating the transition portion 12, and a second chamber 25 for accommodating the connecting portion 13. The shape of the first chamber 24 matches the outer shape of the transition portion 12, and the first chamber 24 communicates with the second chamber 25 and is located on the same axis.

[0024] A first spiral groove 221 that fits the outer circumferential surface of the connecting portion 13 is provided on the inner wall of the second chamber 25 in order to allow the grip 2 and the connecting portion 13 to be screwed together.

[0025] The end of the vibrating part 11 away from the transition part 12 is the free end 14, which is covered with a soft rubber cover 3. The soft rubber cover 3 protects the free end 14 from damage, extends its lifespan, and improves the aesthetics of the fitness bar. The pitch dimension T4 of the free end 14 is equal to the diameter dimension D of the metal spring wire, which increases the inertia of the vibrating part 11 when the fitness bar is in use. Furthermore, the free end 14 is molded integrally with the vibrating part 11, preventing it from falling off and providing a more stable structure. A strap 4 is connected to the grip 2, which can be worn around the wrist during training, preventing the grip 2 from slipping out of the hand and further protecting the user's safety.

[0026] As described above, the principle of attachment and detachment of the first embodiment of the present invention is as follows: The end of the connecting portion 13 of the rod 1 is fitted into and abuts the second chamber 25 in the grip 2, and the rod 1 and grip 2 are rotated relative to each other, thereby threading the connecting portion 13 of the rod 1 into the first spiral groove 221 of the grip 2, thereby achieving attachment of the rod 1 and grip 2. This makes attachment of the rod 1 and grip 2 very convenient. Similarly, the rod 1 and grip 2 can be detached by rotating the rod 1 and grip 2 in the opposite direction relative to each other.

[0027] 7 and 8, the second embodiment of the present invention differs from the first embodiment as follows: the hollow cavity further includes a third chamber 26 located within the rear end 23 of the grip, the third chamber 26 is coaxial with and communicates with the second chamber 25, and the third chamber 26 has a first connecting post 27 integrally formed therewith and extending to the second chamber 25, the first connecting post 27 being fitted into the inner diameter of the connecting part 13. A second spiral groove 271 is formed on the outer wall of the first connecting post 27, matching the inner circumferential surface of the connecting part 13 to allow the grip 2 and the connecting part 13 to be threadedly engaged.

[0028] As described above, the principle of attachment and detachment in the second embodiment of the present invention is that the end of the connecting part 13 of the rod 1 is inserted into the grip body 22 and abuts against the end face of the first connecting post 27 in the grip 2. By rotating the rod 1 and the grip 2 relative to each other, the connecting part 13 is screwed into the second spiral groove 271 of the first connecting post 27, thereby attaching the rod 1 to the grip 2. Similarly, by rotating the rod 1 and the grip 2 in the opposite direction, detachment can be completed.

[0029] The third embodiment of the present invention, as shown in Figures 9 and 10, differs from the first embodiment in that the grip 2 includes a grip tip 21, a grip body 22, and an end cap 28, which are arranged sequentially on the same axis. The grip tip 21 is integrally molded with the grip body 22. The end cap 28 is provided separately from the grip body 22. The outer diameter of the grip body 22 is smaller than that of the grip tip 21 and the end cap 28. The grip tip 21 is fitted over the transition section 12, and the grip body 22 is fitted over the connecting section 13. The end cap 28 has a second connecting post 29 extending toward the grip tip 21 and fitted into the inner diameter of the connecting section 13. A third spiral groove 291 is provided on the outer wall of the second connecting post 29, which fits into the inner surface of the connecting section 13 to thread the end cap 28 and the connecting section 13. The inside of the end cap 28 is pressed against the grip body 22 to prevent the grip body from coming off the connecting part 13 to the outside.

[0030] As described above, the operating principle for attachment and detachment of the third embodiment of the present invention is as follows: The end of the connecting portion 13 of the rod 1 is inserted into the grip body 22. The second connecting post 29 of the end cap 28 abuts against the end face of the connecting portion 13. By rotating the rod 1 and the end cap 28 relative to each other, the connecting portion 13 is threaded into the third spiral groove 291 of the end cap 28, and then rotating the end cap 28 until the inside of the end cap 28 is pressed against the grip body 22, thereby attaching the rod 1 to the grip 2. Similarly, by rotating the rod 1 and the end cap 28 relative to each other in the opposite direction, the rod 1 and the grip 2 can be detached.

[0031] 11, the fourth embodiment of the present invention differs from the third embodiment in the following respects: the end of the connecting part 13 protrudes from the rear end of the grip body 22, and the inner wall of the end cap 28 is provided with a fourth spiral groove 281 that fits onto the outer periphery of the protruding end of the connecting part 13 to allow the end cap 28 to threadably engage with the protruding end of the connecting part 13. The inside of the end cap 28 is pressed against the grip body 22, preventing the grip body from slipping outward from the connecting part.

[0032] As described above, the attachment and detachment operation principle of the fourth embodiment of the present invention is as follows: The end of the connecting portion 13 of the rod 1 is inserted into and protrudes from the grip body 22, and the end cap 28 is rotated so that the fourth spiral groove 281 screws into the outer periphery of the protruding end of the connecting portion 13. The rod 1 and grip 2 are attached by rotating the end cap 28 until the inside of the end cap 28 is pressed against the grip body 22. Similarly, the rod 1 and grip 2 can be detached by rotating the end cap 28 in the opposite direction.

[0033] In the third and fourth embodiments, the grip tip 21 and the grip body 22 can be integrally molded from a soft rubber material, and the end cap 28 can be made from a hard plastic material.

[0034] In the present invention, the length of the rod body 1 is 330-450 mm, and the length of the vibrating part 11 is 300-400 mm. [Explanation of symbols]

[0035] 1. Rod 2 Grip 11 Vibration unit 12 Transition section 13 Connecting part 21 Grip tip 22 Grip body 23 Rear end of grip 24 First Chamber 25 Second Chamber 221 First spiral groove 14 Free end 3 soft rubber covers 4 Straps 26 Third Chamber 27 First connecting post 271 Second spiral groove 22 Grip body 28 End Cap 29 Second connecting post 291 Third Spiral Groove 281 Fourth Spiral Groove

Claims

1. A fitness rod comprising a rod body and a grip, the rod body having a coil spring structure and comprising a vibrating section, a transition section, and a connecting section which are integrally molded and connected in sequence, the vibrating section and the connecting section both having a cylindrical coil spring shape, the outer diameter dimension and pitch dimension of the connecting section being smaller than the outer diameter dimension and pitch dimension of the vibrating section, respectively, the transition section having a conical coil spring shape which narrows from the vibrating section to the connecting section, the grip being fixedly connected to the connecting section either detachably or non-detachably, and when the fitness rod is swung or rocked by holding the grip, the vibrating section can be elastically vibrated in the direction of the swinging or rocking.

2. The fitness rod of claim 1, characterized in that the pitch dimension of the transition portion is the same as the pitch dimension of the connecting portion, and the length dimension of the vibration portion is at least twice the length dimension of the connecting portion, and the length dimension of the transition portion is smaller than the length dimension of the connecting portion.

3. The fitness rod of claim 2, wherein the vibrating portion, the transition portion, and the connecting portion are integrally made of metal spring wire, the pitch dimension of the transition portion and the connecting portion is the same as the diameter dimension of the metal spring wire, and the pitch dimension of the vibrating portion is at least twice the diameter dimension of the metal spring wire.

4. The fitness rod of claim 1, characterized in that the grip comprises a grip tip, a grip body, and a grip rear end that are integrally molded and connected in sequence, the grip tip, the grip body, and the grip rear end are all located on the same axis, and the outer diameter dimension of the grip body is smaller than the outer diameter dimensions of the grip tip and the grip rear end.

5. The fitness rod of claim 4, characterized in that the grip has a hollow cavity that opens to the grip tip, the hollow cavity is located at the open end and has a first chamber for accommodating the transition portion and a second chamber for accommodating the connecting portion, the shape of the first chamber conforms to the outer shape of the transition portion, the first chamber is connected to the second chamber and is located on the same axis.

6. The fitness rod of claim 5, wherein the inner wall of the second chamber is provided with a first spiral groove that fits the outer surface of the connecting portion to realize threaded engagement between the grip and the connecting portion.

7. The fitness rod of claim 5, characterized in that the hollow cavity further includes a third chamber located within the rear end of the grip, communicating with the second chamber and positioned on the same axis, and a first connecting post integrally molded within the third chamber and extending toward the second chamber, the first connecting post being fitted into the inner diameter of the connecting portion, and the outer wall of the first connecting post being provided with a second spiral groove that fits into the inner surface of the connecting portion to realize threaded engagement between the grip and the connecting portion.

8. The fitness rod of claim 1, characterized in that the grip includes a grip tip, a grip body, and an end cap that are arranged sequentially and positioned on the same axis, the grip tip is integrally molded with the grip body, the end cap is arranged separately from the grip body, the outer diameter dimension of the grip body is smaller than the outer diameter dimensions of the grip tip and the end cap, the grip tip is exteriorly mounted on the transition portion, and the grip body is exteriorly mounted on the connection portion.

9. The fitness bar of claim 8, characterized in that the end cap is provided with a second connecting post extending toward the tip of the grip, the second connecting post being fitted into the inner diameter of the connecting portion, and the outer wall of the second connecting post is provided with a third spiral groove that fits into the inner surface of the connecting portion to threadably engage the end cap and the connecting portion, and the inside of the end cap is pressed against the grip body to prevent the grip body from coming off the connecting portion.

10. The fitness rod of claim 8, characterized in that the end of the connecting portion protrudes from the rear end of the grip body, and the inner wall of the end cap is provided with a fourth spiral groove that fits to the outer surface of the protruding portion of the end of the connecting portion to realize screwing of the protruding portion of the end of the connecting portion with the end cap, and the inside of the end cap is pressed against the grip body to prevent the grip body from coming off the connecting portion.

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