JPS6019029Y2 - Motorcycle body suspension characteristics adjustment device - Google Patents

Description

[Detailed Description of the Invention] It is necessary to adjust the characteristics of the rear suspension system of a two-wheeled vehicle depending on the number of passengers, the condition of the road surface, etc.

For this reason, a hydraulic shock absorber for suspending a vehicle body is provided with an adjustment mechanism for exchanging or changing its damping force generating orifice.

However, conventionally, driving was temporarily stopped in order to make this adjustment.
Another drawback was that the operator had to get off the vehicle to operate it.

The present invention eliminates this drawback and provides a device that can easily adjust the suspension characteristics of the vehicle even while the vehicle is running.

Fig. 1 is a sectional view of the embodiment of the present invention, Fig. 2 is a front view of a part of Fig. 1, Fig. 3 is a sectional view taken along line AA in Fig. 2, and Fig. 4
The figure is a front view of a part of the hydraulic shock absorber for vehicle body suspension, part of which is a sectional view taken along the line B-B in FIG. 1, and FIG. It is a sectional view corresponding to a part.

The hydraulic shock absorber 1 has a cylinder body 2 filled with oil tied to the shaft of the rear wheel of a two-wheeled vehicle, a damping force generating mechanism is provided on a piston fitted to the cylinder body, and the upper end of the piston rod 3 is attached to a mounting bracket. 4 is attached to the rear of the vehicle body, and a vehicle body suspension spring 5 is stretched between the mounting bracket 4 and the lower part of the cylindrical body 2.

In addition, the damping force generating mechanism can adjust the damping force characteristics by rotating an adjustment rod passing through the piston rod 3 to replace the orifice.

As shown in the lower part of FIG. 1, a serrated pinion gear 6 is attached to the upper end of the adjustment rod, a serrated rack 7 is engaged with the gear, and one end of the rack is returned to the spring 8.
An arcuate plate spring 9 is provided for indexing the rack and pressing the rack against the gear 6.

Also, a housing 11 of an operating device attached to a bundle 10 of a two-wheeled vehicle.
An operator such as the lever 12 shown in FIG. 1 or the push button 13 shown in FIG.
5 and the shock absorber rack 7 are connected by a flexible cable 16.

The sheath 17 of the flexible cable 16 has one end tied to the mounting bracket 4 and the other end tied to the housing 11 with a screw 18 and a lock nut 19 to prevent loosening.

and a serrated gear 20 is engaged with the rack 15,
A display drum 21 is directly connected to this gear, and the number 22 corresponding to the orifice set at a predetermined position is displayed on the surface of the display drum 21 to face the window 23 of the housing 11, and a circle is formed to press the rack 15 against the gear 20. An arcuate leaf spring 24 is provided.

The gear 6 also has a positioning hole 25 for stopping the gear when an arbitrary orifice is set at a predetermined position.
A steel ball (not shown) pressed by a spring fits into the hole.

In the above-described device, the lever 12 or the fifth lever of FIG.
When the push button 13 in the figure is pushed in the direction of arrow a, the visible image 16 is indexed through the rack 15 because the spring 14 is strong enough.

Therefore, the rack 7 moves to the left in FIG. 1 against the elasticity of the spring 8, and the gears 6 and 20 rotate to the left accordingly.

When the rack 7 hits the inner surface of the mounting bracket 4, the spring 14 expands to prevent the visible image 16 from being cut.

Next, when the lever 12 or push button 13 is released, the rack 7 is indexed to the right in FIG. 1 by the force of the spring 8, and the rack 15 is moved downward and returned. A slip occurs between the rack and the gear 6 or 20, and the gear remains stationary.

Therefore, if the lever 12 or push button 13 is pressed multiple times,
The gears 6 and 20 rotate by a predetermined angle, and the shock absorber 1
The next orifice in moves to a predetermined position, and at the same time the steel ball fits into the positioning hole 25 of the gear 6, which is sensed by touch.

- Also at the same time the next number 22 marks the orifice opposite the window 23.

As described above, in the device of the present invention, the damping force generating orifice of the hydraulic shock absorber can be replaced by an operating device attached to the bundle, thereby adjusting the damping force characteristics and therefore the suspension characteristics of the vehicle body.

Therefore, it can be operated even while driving, and by simply pressing the controller multiple times while monitoring the display that appears on the window 23 etc.
Since there is no need to align the position of the operator with the scale, handling is extremely easy.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the embodiment of the present invention, Fig. 2 is a front view of a part of Fig. 1, Fig. 3 is a sectional view taken along line AA in Fig. 2, and Fig. 4
The figure is a front view of a part of the hydraulic shock absorber for suspension of a vehicle body, and FIG. 5 is a sectional view corresponding to the section CC in FIG. 3 in another embodiment of the present invention. In the figure, 1 is a hydraulic shock absorber, 6 is a gear, 7 is a rack, 8 and 9 are springs, 10 is a bundle, 11 is a housing, and 12
．． 13 is an operator, 14 is a spring, 15 is a rack, 16 is a visible image, and 20 is an adjustment position display gear.

Claims (1)

[Scope of utility model registration request] A hydraulic shock absorber for suspending a vehicle body is provided with a sawtooth damping force adjustment gear, a sawtooth rack is engaged with the gear, and a spring for pressing the rack into contact with the gear and a return spring for the rack are provided. an operating device attached to the bundle; a serrated adjustment position display gear; a serrated operation rack that meshes with the display gear; a spring that presses the operation rack against the display gear; and an operation that drives the operation rack. the rack in the hydraulic shock absorber and the operating rack are connected by a flexible cable, and when the operating element is operated, the rack rotates the gear, and when the operating element is released, the spring is bent. This is a two-wheeled vehicle body suspension characteristic adjustment device configured to cause slippage between the rack and gears and only the rack to return to its original position.