JPH01172092A - Damping force adjusting device for motorcycle - Google Patents

Abstract

PURPOSE:To enhance the manipulating easiness and the safety by installing a switching means, wherefrom the output varies in accordance with the rotational position of a grip, between the grip and a holder, and by adjusting the damping force to any desired value without separating the hand from the grip. CONSTITUTION:A grip 2 is inserted in a handle pipe 1 rotatably through an interior fitted pipe 3. The inside and outside of a flange 7 at a holder 4 fixed to the handle pipe 1 are pinched by the roots of the grip 2 and interior fitted pipe 3. A plurality of contacts 11a-11d are arranged inside the holder 4 at a certain spacing in the circumferential direction, and a brush 12 in contact selectively with these contacts 11a-11d at the end face of the interior fitted pipe 3, and thereby a damping force adjusting switching means is formed. The contacts 11a-11d and the brush 12 are connected to a control circuit 16 through leads 13, 14. This control circuit 16 controls a damping force adjusting means 17.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a damping force adjustment device for a motorcycle shock absorber.

(Prior Art) The applicant of the present invention has already proposed a number of devices that optimally adjust the damping force of a shock absorber for a two-wheeled vehicle depending on driving conditions, etc. so that the shock absorber comes off.

In this case, the damping force can be adjusted by controlling the opening degree of the solenoid valve installed in the front fork or rear suspension in multiple stages according to the request, so that the damping force can be adjusted against the hydraulic fluid that moves as the front fork, etc. expands and contracts. By continuously changing the resistance of the material, it is possible to provide the optimal tearing force characteristics according to the requirements.

(Problem to be solved by the invention) In this case, in order to adjust the damping force value in multiple stages, the driver operates a plurality of switches provided according to the range of selection, but the number of switches is The larger the damping force adjustment range is, the more the damping force increases.

However, in vehicles such as motorcycles, where there is limited space to install switches and instruments necessary for operation,
It is practically very difficult to install a large number of rupture force adjustment switches near the handle that can be operated while holding the handle.

In particular, there are many switches for the starter, horn, directional support nail, headlight, etc. near the handle grip, which is the easiest position to operate, and it is difficult to install many rupture force adjustment switches.

The present invention aims to solve such problems.

(Means for Solving the Problems) Therefore, the present invention provides a damping force adjustment for two-wheeled vehicles, which is equipped with an adjusting means for changing the damping force generated by the front 7 oak or the rear suspension in stages based on a damping force adjustment signal. In the device, a grip is provided to be rotatable within a predetermined angular range with respect to the handle pipe, and a switch means is provided in which an output signal changes continuously or stepwise in accordance with the rotational position of the grip, and the switch means The adjusting means is configured to be driven based on the output of the controller.

(Function) The output of the switch means changes by rotating the grip, and as the amount of rotation increases, the adjustment range of the damping force also increases. Therefore, the damping force can be adjusted freely without taking your hands off the steering wheel while driving.

(Example) v; In Figure i, a grip 2 is rotatably inserted into a handle pipe 1 fixed to the handle side via an interior pipe 3.

The grip 2, which is molded from rubber, synthetic resin, etc., is tightly fitted to the interior pipe 3 so that it will not come off. The base portions of the grip 2 and the interior pipe 3 are held between the inside and outside of the collar part 7 of the cylindrical holder 4 fixed to the handle pipe 1 so as not to come out from the handle pipe 1.

Further, as shown in FIG. 2, a stopper 5 is protruded from a part of the holder 4, and this stopper 5 is arranged inside a notch 6 formed in the circumferential direction of the internal pipe 3. The grip 2 can be rotated until both sides hit the stoppers 5.

However, to prevent the stopper 5 from rotating freely, the holder 4
A day tent mechanism 8 is provided between the inner pipe 3 and the inner pipe 3. This day tent mechanism 8 positions the grip 2 by selectively fitting a check ball 9 housed in the holder 4 into a plurality of small holes 10 formed at predetermined intervals on the end surface of the pipe 3 using the biasing force of a spring. It is something.

Next, inside the holder 4, there are a plurality of contacts 11. at predetermined intervals in the circumferential direction. a, 11b, 11c,
11d, and a brush 12 that selectively contacts these contacts 11n to lid is formed on the end surface of the internal pipe 3, and these constitute a damping force adjustment switch means. Note that instead of the brush 12, magnets and contacts 11a to 1-1d are used.
Instead, a magnetically responsive element such as a reed switch may be provided.

13 is a lead wire connected to each of the contacts 11a to lid, and 14 is a lead wire connected to the brush 12. The brush 12 is connected to the lead wire 14 via an internal pipe 3 made of a conductive material and a wire that contacts this via a brush 15.

The signals taken out through these lead wires 13 and 14 are input to the control circuit 16, which controls the damping force of the front fork or rear suspension. It is converted into a drive signal for the adjustment actuator 17.

The system is constructed as described above, and its operation will be explained next.

The grip 2 is held at an arbitrary rotational position with respect to the holder 4 by a detent mechanism 8 with an appropriate sense of moderation. When this grip 2 is rotated, the brush 12 attached to the internal pipe 3 integrated with the grip 2 and the contact point 11 of the holder 4
The contact position for a to lid changes, and the signal output to the control circuit 16 changes based on this. Based on this signal, the control circuit 16 changes the drive signal to the reducing force adjusting actuator 17 to increase or decrease the generated reducing force.

Since the switch means for adjusting the damping force in this manner is housed inside the fitting between the grip 2 and the holder 4, it can be placed without interfering with other switches attached near the grip 2.

FIG. 3 shows another embodiment, in which a resistor 20 extending in an arc shape is provided instead of the plurality of contacts 11a to 11d attached to the holder 4, and the brush 12 is constantly in sliding contact with the resistor 20. In this way, a variable resistor is constructed.

According to this, the output of the switching means can be changed continuously.

(Effects of the Invention) As described above, according to the present invention, since the switch means that changes the output according to the rotational position of the grip is provided between the grip and the holder, the output can be attenuated without removing the hand from the handle grip. The force can be adjusted arbitrarily, improving operability and driving safety. Further, since the switch means for adjusting the damping force is housed inside the fitting between the grip and the holder, there is an advantage that it can be arranged without interfering with other switches attached near the grip.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of tIrJl of the present invention, FIG. 2 is a sectional view taken along the line A-A#X in FIG. 1, and FIG. 3 is a sectional view taken along the line A-A of another embodiment. 1...handle pipe, 2...grip, 3...
Internal pipe, 4... Holder, 5... Stopper, 6...
...Notch, 8...Daytent mechanism, 111i~1.1
d...Contact, 12...Brush, 20...Resistor. February 24, 1986

Claims (1)

[Claims] A damping force adjustment device for two-wheeled vehicles equipped with an adjusting means for changing the damping force generated by a front fork or rear suspension in stages based on a damping force adjustment signal, in which a grip can be freely rotated within a predetermined angular range with respect to a handle pipe. In addition, a switch means is provided in which the output signal changes continuously or stepwise in accordance with the rotational position of the grip, and the adjustment means is driven based on the output of the switch means. Features damping force adjustment device for motorcycles.