Kendo Dummy With Oscillating Sword

This invention relates to a kendo dummy capable of mechanically operating to replace the human body for practicing kendo.

On kendo practicing, an instructor is needed for practicing attack and defence. However, human body is not suitable for practicing such dangerous movements as straight thrust at throat, breast or stomach. Furthermore, in the absence of an instructor, the kendo exerciser alone can not do the practicing. The kendo dummy provided by the inventor is aimed to obviate the disadvantage of these two respects.

This invention relates to a kendo dummy capable of mechanically operating to replace the human body for practicing kendo.

Accordingly, one object of this invention is to provide a kendo dummy comprising an oscillating means which may do defencing and attacking for the kendo exerciser.

Another object of this invention is to provide a kendo dummy comprising at least three buzzers respectively behind a throat piece, a breast plate and a stomach plate whereby the buzzers will make sound when the kendo exerciser effect a mortal thrust at the throat piece, the breast plate and stomach.

This invention will be further described with reference to the accompanying drawings, the description being given by way of example only, not by way of limitation.

FIG. 1 is a perspective view of a preferable embodiment of this invention;

FIG. 2 is a side view of a preferable embodiment of this invention, partly sectioned; and

FIG. 3 is an exploded view of parts of a preferable embodiment of this invention.

As shown in FIG. 1, the kendo dummy of this invention comprises a trunk means 1 and an oscillating means 2. The trunk means 1 supported by a supporting frame comprises a head portion 15, a shoulder portion 14, a breast-stomach portion 13 and two arm portions 16a and 16b. The supporting frame 10 comprises a plurality of legs 103, an outer cylinder 11 connected to the upper ends of the legs 103, a spring member 111 (as shown in FIG. 3) within the hollow cylinder 11, an inner cylinder 12 partly inserted in the outer cylinder 11 to butt against the spring member 111 with the lower end thereof, and a fastening member 121 with which the relative position between the outer cylinder 11 and the inner cylinder 12 is adjustable. A plurality of rollers 101 are provided at the lower ends of the legs 103 for facilitating in moving the kendo dummy of this invention. A plurality of bolts 102 are further provided at the lower ends of the legs 103 for securing the kendo dummy of this invention to a desired place. The trunk means 1 further comprises a throat piece 17, a breast plate 18 and a stomach plate 19.

As shown in FIG. 1, an oscillating means 2 of this invention is connected to the supporting frame 10 by means of a stationary member 20. As referred in FIGS. 2 and 3, the oscillating means 2 comprises a shaft 21 secured to the stationary member 20, an oscillating arm 26 pivotally mounted on the shaft 21, a suspending bar 221 extending downward from the oscillating arm 26, a weight 23 secured to the suspending bar 221 by means of a bolt 231, a rotating member 22 sleeved on the shaft 21, a holder 25 connected to the rotating member 22 by means of a bolt 251, and a bamboo sword 24 inserted in the holder 25. The bamboo sword 24 is fastened within the holder 25 by means of a fastening member. The stationary member 20 is provided with an upright board 201 cut with a longitudinal bore 202. The oscillating arm 26 which is cut with a longitudinal bore 261 corresponds to the upright board 201 in structure. A fastening member 271 extends through the bores 202 and 261; both ends of the fastening member 271 expose outside the bores 202 and 261. A torsion spring 27 sleeved on the fastening member 271 is confined between the upright board 201 and oscillating arm 26. The torsion spring 27 is adjustable by adjusting the fastening member 271 within the bores 202 and 261. As shown in FIG. 2, the inclination of the bamboo sword 24 is adjustable by means of the bolt 251. The oscillating speed of the bamboo sword 24 depends on the position of the weight 23 in relation to the suspending bar 221. If a higher oscillating speed is desired, the weight 23 must be fastened on the upper portion of the suspending bar 221. However, in a case where a lower oscillating speed is desired, the weight 23 must be fastened to the lower portion of the suspending bar 221. When the bamboo sword 24 is hit sidewise, the weight 23 will swing to effect a great tension on the torsion spring 27. The torsion spring member 27 and the weight 23 will combine to swing back the bamboo sword 24.

As shown in FIG. 3. the throat piece 17, the breast plate 18 and stomach plate 19 are pivotally provided on the trunk means 1. The throat plate 17, the breast plate 18 and stomach plate 19 are respectively supported by coil springs 171, 181 and 191. Three buzzers 172, 182 and 183 are respectively provided behind the throat plate 17, the breast plate 18 and stomach plate 19. If the straight thrust done by the kendo exerciser effects to push the throat piece 17, the breast plate 18 and the stomach plate 19 in contact with the top ends of the buzzers 172, 182 and 192, a sound will then be made. Thus, the kendo exerciser may know whether his thrust is effective or not.

As many apparently widely different embodiments of this invention may be made without departing from the spirit and scope thereof, it is to be understood that the invention is not limited to the specific embodiments thereof except as defined in the appended claims.