Patent ID: 7967117
Filing Date: 2011-06-28
Classification: F16F

Abstract:
1. A suspension spring adjusting apparatus of a hydraulic shock absorber comprising: a piston rod inserted into a cylinder; a spring adjusting jack provided in an outer periphery of the cylinder; a jack chamber provided in a spring adjusting case in which the spring adjusting jack is fixed to the outer periphery of the cylinder, wherein a plunger is provided in the jack chamber, a pump supplying a hydraulic pressure to the jack chamber installed in the spring adjusting case, a motor driving the pump provided in the spring adjusting case, and the motor is covered by a case cover attached to the spring adjusting case; and a suspension spring interposed between a spring receiver supported by the plunger of the spring adjusting jack and a spring receiver provided on a side of the piston rod, wherein a mounting structure of the motor to the spring adjusting case is constituted by a three-point support structure in a plan view including a motor shaft of the motor; two points of the three-point support structure are located at a leading end side of a direction along the motor shaft of the motor and one point of the three-point structure is located at a terminal end side of the direction along the motor shaft of the motor; wherein the two points of the three-point support structure located at the leading end side of the motor are constituted by a structure of fixing two mounting bosses provided in a speed reducer arranged in the leading end side of the motor in the direction along the motor shaft of the motor to the spring adjusting case by a bolt, and the one point of the three-point support structure is constituted by a structure of screwing a mounting holder wound around a mounting protrusion provided in the terminal end side of the motor in the direction along the motor shaft of the motor to a mounting stay provided in a rising manner on the spring adjusting case; wherein a center of gravity of the motor is arranged in a triangle obtained by connecting three points of the three-point support structure of the motor.