| 摘要 |
The present invention has been made to solve a problem in that the conventional stick which absorbs a shock by using elastic force has a danger of disrupting the balance of a user. The present invention relates to an articular type stick which mimics the articular structure of a human spine, and the articular type stick has a structure in which multiple cylindrical members having a penetration hole formed in the center thereof are connected to each other in a line and the cylindrical members at both ends are strongly tied with a flexible string with little elasticity. The connected cylindrical members of the stick are instantly disrupted horizontally when receiving a shock from the outside, thereby preventing the vertical transfer of the shock and being promptly restored to its original state by the tension of the string. Moreover, holes, protrusions and grooves are formed in the shape of a regular polygon around the penetration hole, and a string is connected to the holes, protrusions and grooves to improve a buffer function and prevent the deviation of the cylindrical members. Therefore, the stick is capable of absorbing shocks without deformation in the shape in a vertical direction (stretching), thereby enabling the old and weak to safely use the stick. |
