TENSION ADJUSTMENT STRUCTURE OF BOXING TRAINING DEVICE

Abstract

A tension adjustment structure of a boxing training device contains: a base, at least one control module for controlling a tension of a spring, and an impact module. The base includes a first fitting tube and a first screwing element. The impact module includes a coupling stem. The at least one control module includes a first support post, the spring, a second support post, a second fitting tube, and a second screwing element. The coupling stem is inserted through the first support post and the second fitting tube, and the second screwing element is screwed into a locking orifice of the first support post to fix the coupling stem in the first support post and the second fitting tube. The spring is partially fitted on the first and second support posts, and a height of each of the first support post and the second support post is adjustable.

Description

FIELD OF THE INVENTION

The present invention relates to a tension adjustment structure for a boxing training device which is capable of adjusting a height of the second support post, the tension of the spring, and a gravity center of the tension adjustment structure.

BACKGROUND OF THE INVENTION

A conventional elasticity adjustment structure of physical training device is disclosed in U.S. Pat. No. 8,931,767 and contains: a base, an elastic buffer area formed on the base, a spring or a rubber accommodated in the elastic buffer area, wherein the spring is fitted on a column of the elastic buffer area.

When a number of coils of the spring increases, the column is adjusted to move downward and bounces upward by using the spring. When a number of coils of the spring decreases, the column bounces quickly, the spring has a using fatigue after a period of using time.

The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.

SUMMARY OF THE INVENTION

The primary aspect of the present invention is to provide a tension adjustment structure for a boxing training device which is capable of adjusting a height of the second support post, the tension of the spring, and a gravity center of the tension adjustment structure.

To obtain the above aspect, a tension adjustment structure for a boxing training device provided the present invention contains: a base, at least one control module for controlling a tension of a spring, and an impact module.

The at least one control module is connected between the base and the impact module.

The base includes a first fitting tube and a first screwing element, the impact module includes a coupling stem extending from a bottom of the impact module, and the at least one control module includes a first support post, the spring, a second support post, a second fitting tube, and a second screwing element.

The coupling stem of the impact module is inserted through the first support post and the second fitting tube, and the second screwing element is screwed into a locking orifice of the first support post so as to fix the coupling stem in the first support post and the second fitting tube. The spring is partially fitted on the first support post and the second support post, and a height of each of the first support post and the second support post is adjustable to adjust a tension of the spring and a gravity center of the tension adjustment structure.

Preferably, the base includes a connection portion formed on a center thereof, and the base includes the first fitting tube connected on the connection portion.

Preferably, the first support post and the second support post are hollow, and the spring is internally formed on the first support post and the second support post.

Preferably, the impact module includes a body and a coupling stem, wherein the body is hit by a user, and the coupling stem is connected on a bottom of the body.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view showing the exploded components of a tension adjustment structure for a boxing training device according to a preferred embodiment of the present invention.

FIG. 2 is a perspective view showing the assembly of the tension adjustment structure for the boxing training device according to the preferred embodiment of the present invention.

FIG. 3 is a cross sectional view showing the assembly of a part of the tension adjustment structure for the boxing training device according to the preferred embodiment of the present invention.

FIG. 4 is another cross sectional view showing the assembly of a part of the tension adjustment structure for the boxing training device according to the preferred embodiment of the present invention.

FIG. 5 is a perspective view showing the operation of the tension adjustment structure for the boxing training device according to the preferred embodiment of the present invention.

FIG. 6 is another perspective view showing the assembly of the tension adjustment structure for the boxing training device according to the preferred embodiment of the present invention.

FIG. 7 is also another perspective view showing the assembly of the tension adjustment structure for the boxing training device according to the preferred embodiment of the present invention.

FIG. 8 is a side plan view showing the assembly of the tension adjustment structure for the boxing training device according to the preferred embodiment of the present invention.

FIG. 9 is another side plan view showing the assembly of the tension adjustment structure for the boxing training device according to the preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

With reference to FIGS. 1 to 9, a tension adjustment structure of a boxing training device according to a preferred embodiment of the present invention comprises: a base 1, at least one control module 2 configured to control a tension of a spring 22, and an impact module 3.

Referring to FIGS. 1 to 9, the base 1 is configured to support the at least one control module 2 and the impact module 3, wherein the base 1 includes a connection portion 11 formed on a center thereof, and the base 1 includes a first fitting tube 12 connected on the connection portion 11 by using at least one screw bolts, as illustrated in FIG. 1.

As shown in FIGS. 1 and 2, the at least one control module 2 includes a first support post 21, the spring 22, a second support post 23, a second fitting tube 24, and a second screwing element 25. The first support post 21 and the second support post 23 are hollow, the spring 22 is integrally formed on the first support post 21 and the second support post 23, as shown in FIG. 3, wherein the second support post 23 is inserted into and is fixed in the first fitting tube 12 by ways of a first screwing element 13, as illustrated in FIGS. 3 and 5-7, a height of the second support post 23 is adjustable based on using requirements, and the tension of the spring 22 and a gravity center of the tension adjustment structure are adjustable.

With reference to FIGS. 1 and 2, the impact module 3 includes a body 31 and a coupling stem 32, wherein the body 31 is hit by a user, and the coupling stem 32 is connected on a bottom of the body 31, as illustrated in FIGS. 2, 4, 6, and 7, wherein the coupling stem 32 is inserted through the first support post 21 and the second fitting tube 24, and the second screwing element 25 is screwed into a locking orifice 211 of the first support post 21 so as to fix the coupling stem 32 in the first support post 21 and the second fitting tube 24. In addition, a height of the first support post 21 is adjustable to obtain a desired bouncing speed and force of the impact module 3.

Referring to FIGS. 4-7, in operation, the first support post 21 is adjusted to a desired height along the second support post 23 and is fixed on the second support post 23 by using the first screwing element 13 and the second screwing element 25, such that the user hits the impact module 3 to swing and bounce reciprocately at three swinging positions by using the spring 22.

As shown in FIG. 8, the first support post 21 and the second support post 23 of the at least one control module 2 are respectively lifted upward and are fixed by using the first screwing element 13 and the second screwing element 25 so that the coupling stem 32 and the first support post 21 are driven by the body 31 to bend the spring 22 after the body 31 is hit by the user. In the meantime, the gravity center of the tension adjustment structure is high, and the tension of the spring is small. Thereby, the impact module 3 bounces greatly so that the user hits and shirks the impact module 3.

As illustrated in FIG. 9, the first support post 21 and the second support post 23 of the at least one control module 2 are respectively descend downward and are fixed by using the first screwing element 13 and the second screwing element 25 so that the coupling stem 32 and the first support post 21 are driven by the body 31 to bend the spring 22 after the body 31 is hit by the user. In the meantime, the gravity center of the tension adjustment structure is low, and the tension of the spring 22 is large. Thereby, the impact module 3 bounces slightly so that the user hits the impact module 3 only.

Accordingly, the user exactly exercises boxing skills by using the tension adjustment structure of the boxing training device.

When the impact module 3 is adjusted to 150 cm and the second support post 23 is moved away from the base 1, the impact module 3 bounces greatly. When the impact module 3 is adjusted to 150 cm and the second support post 23 is moved close to the base 1, the impact module 3 bounces slightly. Accordingly, the impact module 3 bounces greatly or slightly, when the impact module 3 is adjusted to a fixed height. Preferably, the first support post 21, the spring 22, and the second support post 23 are fixed by ways of the first fitting tube 12, the first screwing element 13, the second fitting tube 24, and the second screwing element 25, thus avoiding a height limitation and a fatigue of the spring 22.

No matter the first support post 21 and the second support post 23 are adjusted to any heights, the spring 22 has a fixed tension.

While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention as well as other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention

Claims

1. A tension adjustment structure of a boxing training device comprising:

a base, at least one control module configured to control a tension of a spring, and an impact module, the at least one control module being connected between the base and the impact module;

wherein the base includes a first fitting tube and a first screwing element, the impact module includes a coupling stem extending from a bottom of the impact module, and the at least one control module includes a first support post, the spring, a second support post, a second fitting tube, and a second screwing element;

wherein the coupling stem of the impact module is inserted through the first support post and the second fitting tube, and the second screwing element is screwed into a locking orifice of the first support post so as to fix the coupling stem in the first support post and the second fitting tube; wherein the spring is partially fitted on the first support post and the second support post, and a height of each of the first support post and the second support post is adjustable to adjust a tension of the spring and a gravity center of the tension adjustment structure.

2. The tension adjustment structure as claimed in claim 1, wherein the base includes a connection portion formed on a center thereof, and the base includes the first fitting tube connected on the connection portion.

3. The tension adjustment structure as claimed in claim 1, wherein the first support post and the second support post are hollow, and the spring is internally formed on the first support post and the second support post.

4. The tension adjustment structure as claimed in claim 1, wherein the impact module includes a body and a coupling stem, wherein the body is hit by a user, and the coupling stem is connected on a bottom of the body.