JPS601089A - Self-levelling damper for two-wheel barrow - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a self-leveling damper for a two-wheeled vehicle that prevents changes in vehicle height when the two-wheeled vehicle is parked.

This type of self-leveling damper is equipped with a hydraulic spring adjuster that controls the pressure oil generated in the oil chamber in the cylinder through a check valve and adjusts the spring load using the pressure oil. The spring load is increased by the action of the spring adjuster when a passenger is riding or when cargo is loaded.

By the way, with conventional dumpers of this type, it is difficult to get off the vehicle from the loaded state at 9 o'clock when two people are riding, or to take the luggage at 9 o'clock.
If the damper is completely extended, the pressure oil in the spring adjuster will gradually return to the oil chamber in the cylinder, which will cause the vehicle height to drop over time.
This is particularly problematic when the vehicle is parked with the side stand on.

That is, when the motorcycle is parked on the side stand, the height of the vehicle decreases over time, which reduces the stability of the vehicle's posture during parking, and may even cause the motorcycle to fall over depending on road conditions.

The present invention has been made to effectively solve this problem, and its purpose is to prevent changes in vehicle height when parking a two-wheeled vehicle, and to stabilize the posture of the vehicle even when parked on the side stand. To provide a self-leveling damper for 211 to 16 cars that maintains its performance and achieves 4G.

In order to achieve the objective, the present invention provides a two-wheeled vehicle equipped with a hydraulic spring adjuster that introduces pressure oil generated in an oil chamber in a cylinder via a check valve and adjusts a spring load using the pressure oil. A self-leveling damper for use in a motorcycle is provided with a check valve opening mechanism that opens the check valve when the side stand of a two-wheeled vehicle is used.

A preferred embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

The drawing is a longitudinal 1st r full 11 side view of the self-leveling damper according to the present invention, in which 1 indicates the inner and outer cylinders 2 and 3.
It is a cylinder with a double cylindrical structure, and the inner cylinder 2 of this
As shown in the figure, a piston rod 4 is inserted from one side, and a piston 5 is connected to the lower part of the piston rod 4, and is fitted into the inner cylinder 2 so as to be vertically slidable. The piston 5 is provided with a valve mechanism 6 that generates a damping force.

has been done.

On the other hand, a pipe 9 is installed at the bottom of the cylinder 1.
As shown in the figure, the upper end of the pipe 9 is slidably fitted into a fitting hole 4a formed in the piston rod 4.

An oil chamber A is formed at the lower end of the cylinder 1, and the core oil chamber A is intermittently communicated with the oil passage 9a in the pipe 9 through a check valve 10 provided therein.

The inside of the cylinder 1 is divided into an internal cylinder oil chamber B and a reservoir chamber C, and each chamber B and C contains hydraulic oil, and in particular, the reservoir chamber C is occupied by the oil. ing.

By the way, an upper metal 11 is bound to the upper end of the piston rod 4 as shown in the figure 9, and a spring seat 12 is bound to the circumference of the metal 11. In addition, 1 in the figure
3 is Stotsu no Ku Ranoku.

In addition, a lower metal 14 is attached to the lower part of the cylinder 1, and the bolts are attached to the top of the piston rod 4.
jh1 connects to the vehicle body 11 of the 24-car through the upper metal 11! lI, and is connected to the wheel 1111 via the T-section lower joint 14 of the cylinder 1.
t, piston rod 4 and 7 cylinder 1 are Japanese ') ('
l” Rk6 moves.

Incidentally, a hydraulic spring adjuster 20 is provided on the lower outer periphery of the cylinder 1. In this spring adjuster 20, 21 is below! 1'r11 is a guide member which is fixed to the outer periphery of the cylinder 1, and the upper blade 1) is a guide member, and an adjuster 22 is fitted to the guide member 21 and the outer periphery of the cylinder 1 so as to be slidable up and down. ing.

The area surrounded by the guide i'511 *J' 21 and the adjuster 22 constitutes a pressure chamber D-i as shown in the figure, and this pressure chamber is bored in the side wall of the outer cylinder 3 and filled with λt pressure oil ( Shi3a
and υξ oil hole 15a drilled in the side wall of fixed capital 4A15...
・Do jf! ? ! J; communicates with f12 oil chamber A. In the figure, 231'L is a bar.

Then, on the top surface of the adjuster 22, there is a
Two slidably fitted spring seats 16 are in contact with each other, and a coil spring 17 is stretched between the spring seats 16 and the Ail striped spring seat 12.

On the other hand, a check valve opening mechanism 30 is provided at the bottom of the cylinder 1. In this check valve opening mechanism 30, reference numeral 31 denotes an arm that is pivotally attached to the middle part of the stay 32V that protrudes from the lower end of the cylinder so as to be able to swing vertically. The other end is connected to the check valve 10 via the rod 34.

Therefore, when riding with two people or loading luggage, pipe 9
enters the fitting hole 4a of the piston rod 4, and the pressure oil generated thereby flows through the pipe oil passage 9a, the check valve 10, the chamber A,
The oil is introduced into the pressure chamber of the spring adjuster 20 through the oil extraction holes 5a..., 3a. The pressure of the pressure oil introduced into the pressure chamber causes the gear caster 22 to move upward, compressing the spring 17 and increasing its load.

After that, if you get off the vehicle or remove your luggage, the damper will temporarily become fully extended, but if you put the side stand 50 on, the wire cable 33 will cause the arm 31 to swing in the direction of the arrow shown in the figure (counter-time direction). This swing movement causes the rod 34 connected to one end of the arm 31 to move downward, and the downward movement of the rod 34 forces the check valve 10 to open. When the check valve 10 is opened, the pressure oil in the pressure chamber of the spring adjuster 20 passes through the check valve 10 and instantly returns to the oil chamber B in the cylinder 1, and as a result, the seven load of the spring 17 is also reduced. It instantly returned to its original position, and the damper, which had been fully extended, roared to its lowest point.
The vehicle height is adjusted lower.

With the side stand 50 tilted as shown above! kL
In the case of 11LIy, the vehicle height can be lowered instantly,
The stability of the motorcycle's body posture is maintained, and the worst-case scenario, such as the motorcycle falling over, is avoided.

In the above embodiments, a wire type check valve opening mechanism was used, but other types such as hydraulic or electric types may also be used as the mechanism.

As is clear from the above description, according to the present invention, a self-leveling damper is provided with a check valve release mechanism so that when parking using the side stand, the pressure oil in the spring adjuster is instantly returned to the oil chamber in the cylinder. Because of this,
This prevents changes in vehicle height when a two-wheeled vehicle is parked, and ensures stability of the vehicle even when parked on the side stand.

[Brief explanation of the drawing]

The drawing is a longitudinal cross-sectional diagram of a self-leveling device according to the present invention. In the drawings, 1 is a cylinder, 4 is a piston rod, 5 is a piston, 9 is a pipe, 10 is a check valve, 17 is a coil spring, 20 is a hydraulic spring adjuster, 21 is a guide sound I2, 22 is an ajan teri, 30 is a check valve opening mechanism, 31 is an arm, 33 is a wire cable cable, 34 is a rod, and 50 is a side stand.

Claims (2)

[Claims] (1) A self-leveling damper for two-wheeled vehicles that is equipped with a hydraulic spring adjuster that uses the pressure oil generated in the oil chamber in the cylinder through a check valve to adjust the spring load. A self-leveling damper for a two-wheeled vehicle, comprising a check valve opening mechanism that opens the check valve when in use. (2) The check valve opening mechanism has an arm pivotally attached to the damper body, one end of which is connected to the side stand via a wire cable, and the other end of the arm is connected to the check valve via a rond. Self-leveling damper for two-wheeled vehicles as described in Patent No. 1, characterized in that it is configured by being connected to