| 摘要 |
The present invention relates to a vibration generating device. The vibration generating device includes: a first cylinder block (10) having an internal cylinder bore (12) therein, an intake hole (13) through which a working fluid flows in, and a discharge hole opened in a longitudinal direction of the cylinder bore (12) in one end of the cylinder bore (12) and through which the working fluid flows out to the outside; a second cylinder block (30) connected to the first cylinder block (10), covering one side of the cylinder bore (12), and having an internal fluid chamber connected to the cylinder bore (12); a piston (40) installed to be able to reciprocate linearly inside the cylinder bore (12), selectively connecting the intake hole (13) to the fluid chamber (32) and the fluid chamber (32) to the cylinder bore (12) to discharge the working fluid received in the fluid chamber (32) through the intake hole (31) through the discharge hole to the outside via the cylinder bore (12); and a buffering member (50) made of an elastic material, formed in at least one among one end of the piston (40) and a bottom unit of the fluid chamber (32) facing each other, and colliding with the piston (40) during the linear reciprocating process of the piston (40). In the present invention, the buffering member (50) equipped in the vibration generating device is positioned in a movement passage of the piston (40). The buffering member (50) relieves a shock by colliding with the piston (40) during the reciprocating process of the piston (40), thereby reducing a hitting sound. |
