1. Field of the Invention
The present invention relates to a boxing training device, more particularly to an adjustable and safe device that the extent of sway can be adjusted and the way to use is changeable.
2. Description of the Prior Art
A typical boxing training device is as disclosed in TW510239. The boxing training device includes a base, a shaft disposed on the base, and a hit portion disposed on the upper end of the shaft. Wherein, an elastic element, such as a spring, is disposed between the base and the shaft.
But the device as mentioned above can sway at only one mode so that the device can not provides more ways to use. Also, the device is easy to sway when transported or moved without disassembling so that it makes transporting more dangerous and inconvenient.
The present invention, therefore, makes improvements on the disadvantages as mentioned above.
The main object of the present invention is to provide a training device which is adjustable and safe to use.
To achieve the above and other objects, a boxing training device of the present invention includes a base portion, a support portion and a hit portion, wherein the support portion includes a hollow shaft, two sliders, and two hollow elastic elements. A longitudinal axis is defined along the extending direction of the shaft. Two ends of the shaft connected to the two elastic elements respectively. Two slots which extend along the longitudinal axis locate on wall of the shaft. The two slots locate near two opposite ends of the shaft. The sliders are columns and are slidably disposed in the shaft. The sliders have fixing members and part of the fixing elements is exposed out of the shaft. The fixing members connect to the sliders through the slots. The slider can be moved into the elastic element in order to limit the action of the elastic element.
Thereby, the extent of sway is able to be adjusted, so the way of use is changeable. Also, the device may not sway when all the elastic elements are fixed so that transporting or moving the device without disassembling may be much easier and safer.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment(s) in accordance with the present invention.
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The base portion 1 has lower fixing element 11 which is a hollow tube with a blind end. Said blind end on the lower fixing element 11 locates on an end near the base portion 1. The lower fixing element 11 is fixed to the base portion 1 by screws. The lower fixing element 11 is threaded on its inner wall. Moreover, an inner tube 111 is disposed in the lower fixing element 11.
The support portion 2 includes a shaft 21, a first slider 24, a second slider 24′, a hollow first elastic element 22 and a hollow second elastic element 22′ . A longitudinal axis is defined along the extending direction of the shaft 21. The shaft 21 of the support portion 2 is composed of two hollow tubes having different external diameters, and the hollow tube with smaller diameter is partly received in adjacent hollow tube. The hollow tube with larger diameter has a threaded hole on its wall. The shaft 21 has an adjustment element 25 which is used for adjusting a length of the shaft 21. One end of the adjustment element 25 has a bolt to be engaged to the threaded holes of the outer tubes of the shaft 21. One end of the shaft 21 is engaged to the first elastic element 22, and the other end of the shaft 21 is engaged to the second elastic element 22′. A protection element 221, 221′ is disposed around the connection between each elastic element 22, 22′ and the shaft 21. A first slot 23 and a second slot 23′ are formed on different positions on the shaft 21 wall respectively, and each slot 23, 23′ extends along the longitudinal axis. Moreover, the two slots 23, 23′ locate on two ends of the shaft 21 respectively. Each of the first slider 24 and the second slider 24 is a column and is slidably received in the shaft 21. The first slider 24 has a first fixing member 241, and the second slider 24′ has a second fixing member 241′. Each of the fixing members 241, 241′ is partly exposed out of the shaft 21. Each slider 24, 24′ has a threaded hole, and each fixing member 241, 241′ has a bolt at one end. The first fixing member 241 is engaged to the threaded hole of the first slider 24 via the first slot 23, and the second fixing member 241′ is engaged to the threaded hole of the second slider 24′ via the second slot 23′. Wherein, each fixing member 241, 241′ has a protrusion 2411, 2411′ whose diameter is larger than the diameter of the bolt of the fixing member 241, 241′. Each slot 23, 23′ has ends whose widths are not smaller than the diameter of the protrusion 2411, 2411′ of the corresponding fixing member 241,241′, and a width between the two ends of each slot 23, 23′ is smaller than the diameter of the protrusion 2411, 2411′ of the corresponding fixing member 241, 241′.
The hit portion 3 has an upper fixing element 31 which is a hollow tube with a blind end. The blind end locates on an end on the upper fixing element 31 near the hit portion 3. The inner wall of the upper fixing element 31 is threaded. An inner tube is disposed in the upper fixing element.
The first elastic element 22 is screwed to the inner wall of the lower fixing element 11, and the second elastic element 22′ is screwed to the inner wall of the upper fixing element 31. The first slider 24 is able to be received in the inner tube of the lower fixing element 11, and the second slider 24′ is able to be received in the inner tube of the upper fixing element 31.
About the action mechanisms of the sliders 24, 24′, the first slider 24 is considered as an example. Please refer to
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The action mechanism of the second slider 24′, the second slot 23′, and the second elastic element 22′ is similar to the example mentioned above.
In respect of the usage, please refer to
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In conclusion, the present invention has the following advantages:
1. The extent of the sway is adjustable so that more ways of using are provided.
2. The height of the device is adjustable.
3. Transporting becomes easier and safer.