Patent ID: 7628253
Filing Date: 2009-12-08
Classification: B60G,F16F,G01D,G01R

Abstract:
1. A damper comprising: a cylinder which is formed with a hollow portion therein; a piston rod which is inserted through an upper portion of the cylinder; a piston valve which is connected with an end of the piston rod so as to reciprocate in the cylinder, the piston valve including a fluid passing hole; a rod guide which air-tightly closes an upper end of the cylinder and has a though-hole in which the piston rod is inserted; and a sensor module which is provided with an acceleration sensor for detecting an acceleration at least in a z-axial direction and a displacement sensor for detecting a displacement of the piston rod and which is coupled with the rod guide, wherein the rod guide is formed with a coupling hole which is communicated from an outer surface of the rod guide to the through-hole, and the sensor module is inserted into the coupling hole, and wherein the coupling hole is formed with an expanded portion which is wider than an entrance formed at the outer surface of the rod guide, and a housing of the sensor module is formed with a protruded portion which is inserted into the expanded portion so as to prevent the sensor module from being separated from the rod guide.