US20090247374A1

US20090247374A1 - Striking apparatus

Info

Publication number: US20090247374A1
Application number: US12/078,361
Authority: US
Inventors: Yi-Lin Chen
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-03-31
Filing date: 2008-03-31
Publication date: 2009-10-01

Abstract

A striking apparatus mainly includes a base, a plastic rod body formed by way of blow molding, and a striking portion. The rod body is integrally and transversally extended to form a connection rod. A helical spring is disposed between the connection rod and the striking portion. The striking portion externally forced can rapidly restore to its original state by the restoring resilience of the helical spring.

Description

BACKGROUND OF THE INVENTION

(1) Field of the Invention
The invention relates to an exercise product, and more particularly to a striking apparatus used for boxing and kicking.
(2) Description of the Prior Art
Taiwan Patent No. M293059 discloses a striking apparatus, which is available in the market and includes a base. A primary rod is disposed at a center of the base. A top end of the primary rod is connected to an elastomer, and a secondary rod is further connected to the elastomer. A top end of the secondary rod is connected to a primary striking body. The primary rod is extended to form a branch. The surface of a connection portion of an end portion of the branch is formed with an engaging tooth. The engaging tooth may engage with an engaging tooth formed on a surface of a fitting portion of a secondary striking body, and a screwing element, which may be rotated to get tight or loose, penetrates through the secondary striking body to fix the secondary striking body. The screwing element can adjust an angle between the secondary striking body and the connection portion.
Using the secondary striking body can adjust the swinging angle of the structure so that the striking range can be enlarged and different striking positions can be obtained. Thus, the exercise can proceed without the boring feeling. In addition, the base is formed with a through hole, into which fillers may be placed. When a lot of fillers are filled into the base, the base can be positioned more firmly. If the striking apparatus has to be moved, the fillers may be extracted out to reduce the weight so that the striking apparatus may be moved more easily. However, no buffer restoring structure, such as the elastomer, is disposed between the secondary striking body and the branch, and the secondary striking body is usually made of a metal material or a plastic material by way of filling molding. If the user strikes the secondary striking body too heavy, the secondary striking body tends to bend and deform or even break.
In view of this, the invention provides a novel striking apparatus to solve the conventional problems.

SUMMARY OF THE INVENTION

A main object of the invention is to provide a striking apparatus, which has an intensified structure and can immediately restore to its original state.
To achieve the above-identified object, the invention is composed of a blow-molded plastic rod body and a striking portion. A base is formed with a chamber to be filled with fillers. The rod body is integrally and transversally extended to form a connection rod. An external thread is formed on a surface of the connection rod. Thus, the rod body is a hollow plastic structure, which is integrally formed.
Next, the external thread is connected to one end of a helical spring. The other end of the helical spring may be connected to the striking portion. The striking portion includes a link and a striking block. The striking block is also formed by way of plastic blow molding. An extended end portion of the striking block is formed with a two-side toothed portion. One end of the link serves as a connection portion for connecting the striking portion to the helical spring. A surface of the other end of the link is formed with an engaging tooth to be engaged with the two-side toothed portion. The engaging tooth may be engaged with any toothed surface of the two-side toothed portion. An adjusting bolt is inserted between the engaging tooth and the two-side toothed portion. The vertical up and down swinging angles of the striking block may be adjusted and fixed according to the personal requirements by rotating the adjusting bolt to get tight or loose.
The structure of the invention has the following effects.
First, the rod body and the connection rod of the invention are integrally formed by way of plastic blow molding. Thus, the structure intensity of the product is increased, and the costs of manufacturing and assembling the elements can be decreased.
Second, the invention utilizes the property of the restoring resilience of the helical spring so that the striking portion is forced to swing backwards greatly, and the helical spring immediately pulls the striking portion back. Thus, as long as the force does not exceed the allowable range of the helical spring, the striking portion may restore to its original state. Therefore, the striking portion is free from being bent or even broken, and the striking portion may also be integrally formed by way of plastic blow molding. Thus, the hollow structure can generate the larger sound and the entertainment of use may be enhanced.
Further aspects, objects, and desirable features of the invention will be better understood from the detailed description and drawings that follow in which various embodiments of the disclosed invention are illustrated by way of examples.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded view showing the invention.

FIG. 2 is a cross-sectional view showing the invention.

FIG. 3 shows that a striking portion of the invention swings up and down.

FIG. 4 shows a stationary state of the invention.

FIG. 4A shows a forced state of the invention.

FIG. 5 shows another embodiment of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The invention relates to a striking apparatus. Illustrations regarding to the adopted technological means and the effects to achieve the above-identified objects and features of the invention will be made with reference to FIGS. 1 and 2.
The striking apparatus according to the invention mainly includes a base 10 and a rod body 20. The base 10 has a chamber 11, into which fillers 60 may be filled to prevent the base 10 from being moved by an external force. The rod body 20 is a two-stage assembled structure including an upper rod 21 and a lower rod 22, each of which is an integrally formed plastic and hollow structure manufactured by way of blow molding. Connection portions between the upper and lower rods 21 and 22 are fixed by several screws 70. The other end of the lower rod 22 is formed with an external thread so that the other end of the lower rod 22 may be directly screwed into a disk body. Then, the disk body is fixed to the base 10. A ball body 30 is disposed on the other end of the upper rod 21, and the upper rod 21 is integrally and transversally extended to form a connection rod 211. The surface of the connection rod 211 is formed with an external thread. Because each of the upper rod 21 and the connection rod 211 is integrally formed by way of plastic blow molding, the used elements may be simplified, and the manufacturing and assembling costs may be decreased.
Next, the external thread may be directly screwed to one end of a helical spring 40. The other end of the helical spring 40 may be connected to a striking portion 50, which includes a link 51 and a striking block 52. The striking block 52 is a plastic hollow structure integrally formed by way of blow molding, and has an extended end portion formed with a two-side toothed portion 521. One end of the link 51 serves as a connection portion between the striking portion 50 and the helical spring 40. A surface of the other end of the link 51 is formed with an engaging tooth 511 to be engaged with the two-side toothed portion 521. The engaging tooth 511 may be engaged with any one of the tooth surfaces of the two-side toothed portion 521. An adjusting bolt 53 is inserted between the engaging tooth 511 and the two-side toothed portion 521. An anti-release screw rod 531 is provided to make the adjusting bolt 53 be fixed. As shown in FIG. 3, the adjusting bolt 53 is rotated so that the up and down swinging angles of the striking block 52 may be adjusted and fixed according to the personal preferred requirement.
In addition, the screws 70 are screwed to connection portions between the helical spring 40 and the connection rod 211 and between the helical spring 40 and the link 51 to prevent the helical spring 40 from separating from the connection rod 211 or the link 51. A soft pad 54 is disposed on each of two sides of the striking block 52. A projecting positioning body 522 is disposed on the surface of the striking block 52. The positioning body 522 can penetrate through a through hole 541 of the soft pad 54. In addition, a protection sheath 55 covers the surfaces of the striking block 52 and the soft pad 54 so that the soft pad 54 can be reliably combined with the striking block 52.
FIG. 4 shows a stationary state of the invention. FIG. 4A shows a forced state of the invention. As shown in FIGS. 4 and 4A, when the user applies a force to the striking portion 50 so that the striking portion 50 is externally forced to swing backward. However, the resilience of the helical spring 40 makes the striking portion 50 immediately restore to its original state. Because the structure thereof is integrally formed by way of plastic blow molding, it can withstand the larger force. The conventional problems that the striking portion 50 is deformed or broken into fragments to hurt a person due to the too large force can be eliminated so that the usage thereof become safer. In addition, the striking portions 50 and the connection rods 211 may be disposed on the upper rod 21, and the lower rod 22, as shown in FIG. 5. In addition, the numbers of the striking portions 50 and the connection rods 211 may be adjusted according to the personal preferred requirement so that the difficulty of striking can be indirectly adjusted and the striking range of the user and the ability of the user can be greatly enhanced.
New characteristics and advantages of the invention covered by this document have been set forth in the foregoing description. It is to be expressly understood, however, that the drawings are for the purpose of illustration only and are not intended as a definition of the limits of the invention. Changes in methods, shapes, structures or devices may be made in details without exceeding the scope of the invention by those who are skilled in the art. The scope of the invention is, of course, defined in the language in which the appended claims are expressed.

Claims

1. A striking apparatus, mainly comprising:

a base having a chamber; and

a rod body disposed on the base, wherein the rod body is integrally formed by way of plastic injection molding and is integrally and transversally extended to form at least one connection rod, a surface of the connection rod is integrally injection molded to form an external thread to be screwed to one end of a helical spring, and the other end of the helical spring is to be connected to a striking portion.

2. The striking apparatus according to claim 1, wherein the rod body is integrally formed by way of plastic blow molding, the striking portion comprises a link and a striking block, one end of the link is connected to the helical spring and is fixed by a screw, the other end of the link is formed with an engaging tooth, the striking block is a hollow plastic structure formed by way of blow molding, the striking block has an extended end portion formed with a two-side toothed portion, each of surfaces of the two-side toothed portion may be engaged with the engaging tooth of the link, an adjusting bolt is disposed between the two-side toothed portion and the engaging tooth, and the adjusting bolt is rotated so that up and down swinging angles of the striking block may be adjusted and fixed.

3. The striking apparatus according to claim 2, wherein the rod body is a multi-stage assembled structure, a soft pad having a through hole is disposed on each of two sides of the striking block, a projecting positioning body is disposed on the striking block, the positioning body may penetrate through the through holes of the soft pads, and a protection sheath covers surfaces of the striking block and the soft pad.