JPS61123238U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional view showing one embodiment of the shock absorber damping force adjustment structure according to the present invention, Fig. 2 is a longitudinal cross-sectional view showing another embodiment, and Fig. 3 is a shock absorber according to a conventional proposal. FIG. 4 is a longitudinal cross-sectional view showing the damping force adjustment structure of FIG. 11...Cylinder, 12...Piston rod,
13... Piston body, 14... Set nut,
14a'... Orifice, 15... Leaf valve, 15a... Plate valve, 15b... Spring, 17
...control valve, 18...rebound side valve,
A... Upper chamber, B... Lower chamber, C... Side passage, D...
...second side channel, d...circular groove.

Amendment April 21, 1986 The scope of claims for utility model registration is amended as follows.

[Claims for Utility Model Registration] (1) It has a leaf valve disposed at the lower end opening of the extension port of the piston body that allows communication between the upper chamber and the lower chamber in the cylinder, and the upper chamber in the cylinder and the lower chamber. In a damping force adjustment structure for a shock absorber having an orifice installed at the lower chamber side opening of a side channel that allows communication with the lower chamber, the leaf valve is attached by a plate valve supported by a spring. The spring biasing the leaf valve is configured to be biased to generate a predetermined high rebound damping force, and the spring biasing the leaf valve is configured such that when the oil from the upper chamber flows into the lower chamber after passing through the side passage, the spring biases the leaf valve. A damping force adjustment structure for a shock absorber, characterized in that it is formed so as to enable generation of a predetermined low rebound damping force depending on the set load. (2) Formed so that the side passage and the back of the leaf valve communicate with each other, and also formed so that a predetermined low damping force can be generated by oil from the side passage lowering the plate valve. A damping force adjustment structure for a shock absorber as claimed in claim 1 of the registered utility model. (3) A second side passage that allows communication between the side passage and the lower chamber is formed in the set nut that fixes the piston body to the tip of the piston rod, and is provided at the opening of the second side passage on the lower chamber side. The damping force of the shock absorber according to claim 1, wherein the shock absorber has an extension valve with a rear end and a lower end of a spring that biases the leaf valve is in contact with the rear of the valve. Adjustment structure. (4) A second side passage that allows communication between the side passage and the lower chamber is formed in the set nut that fixes the piston body to the tip of the piston rod, and is provided at the opening of the second side passage on the lower chamber side. Damping force of the shock absorber according to claim 1 of the patent registration claim, comprising a plate valve having a leaf valve, and a lower end of a spring that urges a leaf valve is abutted behind the plate valve. Adjustment structure. The brief description of the drawing has been amended as follows. On page 17, lines 9 to 10 of the specification, the phrase "Figure 2" is corrected to read "Figures 2 and 3." On page 17, line 10 of the specification, "Fig. 3" is corrected as "Fig. 4," and on line 12, "Fig. 4" is corrected as "Fig. 5."

Claims (1)

[Claims for Utility Model Registration] (1) It has a leaf valve disposed at the lower end opening of the extension port of the piston body that allows communication between the upper chamber and the lower chamber in the cylinder, and the upper chamber in the cylinder and the lower chamber. In a damping force adjustment structure for a shock absorber having an orifice installed at the lower chamber side opening of a side channel that allows communication with the lower chamber, the leaf valve is attached by a plate valve supported by a spring. The spring biasing the leaf valve is configured to be biased to generate a predetermined high rebound damping force, and the spring biasing the leaf valve is configured such that when the oil from the upper chamber flows into the lower chamber after passing through the side passage, the spring biases the leaf valve. A damping force adjustment structure for a shock absorber, characterized in that it is formed so as to enable generation of a predetermined low rebound damping force depending on the set load. (2) Formed so that the side passage and the back of the leaf valve communicate with each other, and also formed so that a predetermined low damping force can be generated by oil from the side passage lowering the plate valve. A damping force adjustment structure for a shock absorber as claimed in claim 1 of the registered utility model. (3) A second side passage that allows communication between the side passage and the lower chamber is formed in the set nut that fixes the piston body to the tip of the piston rod, and is arranged at the opening of the second side passage on the lower chamber side. The shock absorber according to claim 1, wherein the shock absorber has an extension valve with a leaf valve, and the lower end of the extension valve is brought into contact with the lower end of a spring that urges a leaf valve. Damping force adjustment structure.