JPH0442941U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a half-cut sectional view of a damper showing an embodiment of this invention, Fig. 2 is a characteristic diagram of damping force, Fig. 3 is a half-cut sectional view of a damper showing another embodiment, and Fig. 4 is a vibration system. Figure 5 is a characteristic diagram of vibration transmissibility. 1... Damper, 11... Valve guide, 12...
...poppet valve, 13...electromagnetic solenoid, 16...
...Valve seat, 17...Return spring.

Amendment 2.12.13. The name of the invention is amended as follows. Title of the invention: Hydraulic damper The scope of the utility model registration claim and the brief description of the drawings are amended as follows.

[Claims for Utility Model Registration] A base valve is disposed below a cylinder housed in an outer tube, a piston coupled to a piston rod is slidably inserted into the cylinder, and an oil reservoir is provided between the outer tube and the cylinder. In a hydraulic damper having a chamber, a valve guide is provided above the cylinder with a port that connects the oil chamber on the side opposite to the piston rod and the oil reservoir chamber, and this port is normally closed by a spring while energizing the electromagnetic solenoid. 1. A hydraulic damper comprising: a poppet valve which is opened by a poppet; the electromagnetic solenoid is fixed to an outer tube; and the piston rod is slidably guided by an inner periphery of a bobbin of the electromagnetic solenoid.

[Brief Description of the Drawings] Fig. 1 is a half-cut sectional view of a damper showing an embodiment of this invention, Fig. 2 is a characteristic diagram of damping force, and Fig. 3 is a half-cut sectional view of a damper showing another embodiment. , FIG. 4 is a model diagram of the vibration system, and FIG. 5 is a characteristic diagram of the vibration transmissibility. 1... Damper, 11... Valve guide, 12...
...poppet valve, 13...electromagnetic solenoid, 16...
...Valve seat, 17...Return spring.

Claims (1)

[Scope of utility model registration request] In a hydraulic damper used as a vibration isolator for a vibration system, a sliding guide type poppet valve is provided in a passage through which hydraulic oil flows on at least one side when the damper is operating on the expansion side and the compression side, and the poppet valve is set in the closed position. What is claimed is: 1. A hydraulic damper comprising: a return spring that biases the poppet valve;