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hydraulic buffer

A technology of hydraulic buffers and regulators, applied in the field of hydraulic buffers, can solve the problems of limiting the longest elongation stroke, changes, etc.

Active Publication Date: 2016-12-07
HITACHI ASTEMO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, in the hydraulic shock absorber described in Patent Document 1, a rebound spring is disposed around the piston rod located in the rod-side oil chamber inside the inner pipe, and is set on the piston rod when the outer pipe and the inner pipe are at their maximum elongation. Rebound springs supported on the back of the piston on the rod butt against a bulkhead member located on the inner tube limit the maximum extension stroke and consequently limit the full length of the outer and inner tubes to full extension
[0005] However, in the hydraulic shock absorber described in Patent Document 1, the piston of the piston rod that limits the longest extension stroke moves up and down relative to the outer tube when the spring load is adjusted by the screw motion of the adjuster, and as a result, the distance between the outer tube and the inner tube full length change at full elongation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0054] (Example 1) ( Figure 1 to Figure 6 )

[0055] figure 1 The shown hydraulic shock absorber 10A constitutes at least one of the left and right legs of a front fork of a motorcycle or the like, and is a spring leg having a built-in suspension spring 35 without a built-in damper. At this time, the other of the left and right legs of the front fork is constituted by a damper leg having a built-in damper. However, the left and right legs can also be spring legs.

[0056] The hydraulic shock absorber 10A constitutes an inverted front fork with a vehicle body side tube as an outer tube 11 and a wheel side tube as an inner tube 12 . However, the hydraulic shock absorber 10A may also be configured as an upright type front fork having a vehicle body side tube as an inner tube and a wheel side tube as an outer tube.

[0057] Hydraulic shock absorber 10A as Figure 1 ~ Figure 3 As shown, through the lower guide sleeve 11A fixed on the inner circumference of the lower end openi...

Embodiment 2）

[0088] (Example 2) ( Figure 7 , Figure 8 )

[0089] Figure 7 , Figure 8 The hydraulic shock absorber 10B of Embodiment 2 shown with Figure 1 to Figure 6 The hydraulic shock absorber 10A of the first embodiment shown is substantially different in that the operating oil chamber 21 is divided into the lower part than the partition wall part 19A of the partition wall member 19 provided on the inner periphery of the upper end side of the inner pipe 12, and the upper part The zoned oil storage chamber 22 is in fixed sliding contact with the piston 26 on the inner circumference of the inner tube 12 on the front end of the hollow rod 23 . Hereinafter, the hydraulic shock absorber 10B will be described in detail, and in the hydraulic shock absorber 10B, the same components as in the hydraulic shock absorber 10A are given the same reference numerals.

[0090] The shock absorber 10B is an inverted front fork in which the outer tube 11 is arranged on the vehicle body side and th...

Embodiment 3）

[0112] (Example 3) ( Figure 9 ~ Figure 12 )

[0113] Figure 9 ~ Figure 12 The hydraulic shock absorber 100 of the third embodiment shown constitutes a front fork of a motorcycle or the like. The hydraulic shock absorber 100 constitutes an inverted front fork with a vehicle body side tube as an outer tube 111 and a wheel side tube as an inner tube 112 . However, the hydraulic shock absorber 100 may also be configured as an upright type front fork having a vehicle body side tube as an inner tube and a wheel side tube as an outer tube.

[0114] Hydraulic shock absorber 100 such as Figure 9 ~ Figure 12 As shown in FIG. It fits freely inside the outer tube 111 . 111B is an oil seal, and 111C is a dust seal. The outer cylinder portion 113A of the cap 113 is screwed and fixed to the upper end opening of the outer tube 111 in a sealed state by an O-ring, and a vehicle body side mounting member is provided on the outer periphery of the outer tube 111 . A bottom bracket 115 is...

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Abstract

The invention provides a hydraulic shock absorber. In the hydraulic shock absorber (10), a spring load adjusting device (30) is provided with an adjuster (31) at the upper end of the side tube (11) of the vehicle body. ) The push rod (33) moving up and down is arranged through the hollow part of the hollow rod (23), and is suspended by the push rod (33) protruding from the hollow part of the hollow rod (23) to the inner side of the wheel side pipe (12). The suspension spring (35) is pressurized, and the spring load of the suspension spring (35) can be adjusted by the up and down movement of the push rod (33) brought by the adjuster (31).

Description

technical field [0001] The present invention relates to a hydraulic shock absorber suitable for use in front forks for motorcycles and the like. Background technique [0002] As a hydraulic shock absorber such as a front fork for a motorcycle, as described in Japanese Patent Application Laid-Open No. 2004-44669 (Patent Document 1), the inner tube on the wheel side is slidably inserted into the outer tube on the side of the vehicle body, and A partition wall member is provided on the inner circumference of the tube. The lower part of the partition wall member defines the operating oil chamber, and the upper part defines the oil storage chamber. The piston rod installed on the outer pipe side penetrates the partition wall member and is inserted into the operating oil chamber. The front end of the piston rod is provided with a piston that slides in the operating oil chamber. With the piston, the operating oil chamber is divided into a rod-side oil chamber that accommodates the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F13/00F16F9/32B62K25/04
CPCB60G15/061B60G2202/30B62K25/08F16F1/121F16F2230/186B62K2025/048B60G15/06F16F9/00
Inventor 岛崎正雄佐藤公俊大内悠嗣桑原正和高桥龙也近江隆敏蜂须贺正村上阳亮
Owner HITACHI ASTEMO LTD
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