JPH06127453A - Damping force regulating device for suspension for motorcycle - Google Patents

Abstract

PURPOSE:To perform regulation of the damping force of suspension in a state that a riding-on posture is kept by disposing in alignment a damping force adjuster to regulate the damping force of the suspension and an operation part on the same side of a car body and interconnecting the two devices through a remote control member. CONSTITUTION:In the front fork of a motorcycle, damping force adjusters 23L and 23R to regulate a damping force through regulation of a passage area by displacement of a valve body in a vertical direction are arranged to a pair of right and left outer tubes with which a front wheel is nipped and a damping force adjuster 50 is arranged to a rear shock absorber related to a swing arm to support a rear wheel in a swinging state. Operation parts 25, 26, and 52 are arranged at a portion, which is visible and operable by a rider in a riding-on posture, for example, on the same side as the side, where the adjusters 23L, 23R, and 50 are disposed to a handle bar 8, and corresponding to the respective adjusters. The operation parts 25, 26, and 52 are remotely controllably connected to the adjusters 23L, 23R, and 50, respectively, through a control cable 51.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a damping force adjusting device for a motorcycle suspension.

[0002]

2. Description of the Related Art As is well known, a hydraulic damper is incorporated in a front fork and a rear shock absorber of a motorcycle. In recent years, many motorcycle front forks and rear shock absorbers are equipped with a damping force adjuster that allows the damping force of the hydraulic damper to be adjusted strongly and weakly, and the suspension characteristics can be arbitrarily selected. .

Generally, the damping force adjuster of the front fork is provided near the tip portions of the left and right fork tubes, and the damping force adjuster of the rear shock absorber is provided at one end of the rear shock absorber or an attached reservoir tank. There is.

[0004]

However, such a damping force adjuster cannot be adjusted when the rider of the motorcycle is in the riding posture, and must be adjusted after getting off the vehicle. It ’s inconvenient and
Since it is not possible to check how the damping force adjuster is set while the motorcycle is running, it is necessary to check it before running, which is troublesome.

In order to solve this problem, there has been seen a remote control member such as a control cable which enables remote control of each damping force adjuster in a riding posture. Depending on the method, the radius of curvature of the remote control member becomes smaller, friction loss increases and the operability deteriorates, the remote control member becomes an obstacle during steering operation, and the assembly to the vehicle body deteriorates and the cost increases. Problems such as doing occur.

The present invention has been made to solve the above-mentioned problems, and enables the rider of a motorcycle to reliably operate or confirm each damping force adjuster while the rider is in the riding posture, and at the same time, to operate the steering by the remote operation member. It is an object of the present invention to provide a damping force adjusting device for a suspension for a motorcycle, which can eliminate the possibility that the operation is alienated and can improve the assembling property of a remote control member to a vehicle body.

[0007]

To achieve the above object, in a damping force adjusting device for a motorcycle suspension according to the present invention, a damping force adjuster for adjusting the damping force of the suspension is applied to a front fork and a rear shock absorber. In each motorcycle provided,
The operating parts of the damping force adjusters described above are individually installed at locations where the rider can visually check and operate in the riding posture, and these operating parts are connected to the damping force adjusters by remote operation members, respectively. The remote control member connected to these is arranged on the vehicle body in alignment with the side where the corresponding damping force adjuster is provided.

[0008]

With the above construction, it becomes possible to operate or confirm each damping force adjuster while the rider of the motorcycle is in the riding posture.

Further, since each remote operation member is arranged along one side of the vehicle body, the radius of curvature of each remote operation member is increased, friction loss is reduced, the operation is ensured, and the remote operation member is provided. Does not hinder the steering operation, and the assembling property of the remote control member is improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a left side view of a motorcycle to which an embodiment of the present invention is applied. In this motorcycle 1, an engine 3 is mounted on a lower front portion of a vehicle body frame 2, a fuel tank 4 is disposed on an upper front portion of the vehicle body frame 2, and a seating seat 5 and the like are disposed behind the fuel tank 4.

A front fork 7 for rotatably supporting a front wheel 6 is pivotally attached to a front head of the body frame 2 together with a handlebar 8, an instrument lighting and lighting unit 9, a front fender 10 and the like so as to be rotatable left and right. There is. In addition, the pivot shaft 12 installed at the lower center of the body frame 2
A swing arm 14 that supports the rear wheel 13 is pivotally mounted in a vertically rotatable manner. In addition, 15 is an exhaust muffler, 16
Is a rear fender, and 17 is a side cover.

The front fork 7 is of a general telescopic type and has a pair of left and right outer tubes 19 sandwiching the front wheel 6 and a pair of left and right inner tubes 20.
Are slidably inserted, and the left and right inner tubes 20 have upper bracket 21 and lower bracket 2 respectively.
It is fixed in parallel by 2.

At the lower ends of the left and right outer tubes 19,
Damping force adjusters 23L and 23R are provided respectively, and these damping force adjusters 23L and 23R are individually provided with operating portions 25 and 26 by remote control members such as bendable control cables 24L and 24R.
It is connected to the. The operation units 25 and 26 will be described in detail later.

As shown in FIG. 2, a hydraulic damper 27 is provided inside the front fork 7. The hydraulic damper 27 is configured as follows, for example.

A cylinder 2 is provided inside the outer tube 19.
8 is fixed by a bolt 29, and the inner tube 20 is inserted between the cylinder 28 and the outer tube 19. The seal portion 30 provided at the lower end of the inner tube 20 liquid-tightly seals between the inner peripheral surface of the outer tube 19 and the outer peripheral surface of the cylinder 28.

At the lower end of the outer tube 19, oil passages 32 and 33 communicating with the damping force adjusters 23L and 23R are provided, and one oil passage 3 is provided.
2 is the inner peripheral surface of the outer tube 19 and the inner tube 20.
To the oil chamber 34 formed between the outer peripheral surface of the cylinder 28 and the other oil passage 33, and the other oil passage 33 communicates with the oil chamber 35 in the cylinder 28.

A valve body 36 is provided in the damping force adjusters 23L and 23R so as to be movable in the vertical direction. When the valve body 36 moves up, the passage area of the communication passage 37 connecting the oil passages 32 and 33 is increased. When the valve body 36 becomes larger and the valve body 36 descends, the passage area of the communication passage 37 becomes smaller.

The oil chambers 34 and 35 are filled with oil, and when the inner tube 20 slides between the outer tube 19 and the cylinder 28, the oil flows between the oil chambers 34 and 35, At the time of communication 37
Therefore, the flow resistance of the oil can be varied and the damping force of the front fork 7 can be adjusted by moving the valve body 36 up and down to change the passage area of the communication passage 37.

For example, the pusher 40 provided above the valve body 36 moves up and down while rotating by the screw action, and the rotor 41 integrally provided with the pusher 40 is provided.
The inner cables 42 of the control cables 24L and 24R are connected to the outer cable 43 of the control cables 24L and 24R, and are fixed to the casings of the damping force adjusters 23L and 23R. The inner cable 42 is resistant to twisting and can smoothly rotate in the outer cable 43.

On the other hand, the rear end of the swing arm 14 has a rear shock absorber 44 and a link 45,
A rear suspension mechanism 47 composed of 46 is provided.

Inside the rear shock absorber 44,
An unillustrated hydraulic damper having the same action as the hydraulic damper 27 in the front fork 7 described above is installed,
A reservoir tank 48 is provided near the rear shock absorber 44, and is connected to the rear shock absorber 44 by a pressure resistant hose 49. This reservoir tank 48
Is arranged on the left side of the vehicle body, for example. Then, the damping force adjuster 50 provided in the reservoir tank 48.
Is connected to the operation unit 52 by a control cable 51.

The damping force adjusting apparatus according to the present invention includes the damping force adjuster 50, the control cable 51, the operating section 52, the damping force adjuster 23L, and the damping force adjuster 23L.
23R, control cables 24L and 24R, and operation units 25 and 26.

FIG. 3 is a longitudinal sectional view showing one structural example of the reservoir tank 48 and the damping force adjuster 50.
The inside of the reservoir tank 48 is divided into an oil chamber 54 and an air chamber 55 by an elastic diaphragm 53.
4 is filled with oil, and the air chamber is filled with compressed air or gas.

The oil chamber 54 has a damping force adjuster 5
0 through an orifice 57, which communicates with the hydraulic damper within the rear shock absorber 44.
The opening amount of No. 7 is adjusted by the needle valve 58.
The needle valve 58 has a spring 59 for pressing the pusher 6
It is urged to the 0 side. The pressing element 60 is configured to move in the axial direction while rotating by a screw action, and the pressing element 60 is integrally provided with a rotor 61 for rotation. The inner cable 62 of the control cable 51 is connected to the rotor 61, and the outer cable 63 is fixed to the damping force adjuster 50 side.

When the inner cable 62 rotates, the rotor 61, the pressing element 60, and the needle valve 58 rotate together, the pressing element 60 and the needle valve 58 move in the axial direction, and the opening amount of the orifice 57 changes. For this reason,
The flow resistance of the oil flowing between the rear shock absorber 44 and the reservoir tank 48 changes, and the damping force of the rear shock absorber 44 changes.

FIG. 4 is a plan view of the periphery of the handlebar as seen from the arrow IV in FIG. The damping force adjusters 23L,
The operation parts 25, 26, 52 provided individually corresponding to 23R and 50 are the parts which the rider of the motorcycle 1 can visually observe and operate in the riding posture, for example, the handlebar 8 or the fuel tank 4 or the instrument. Lights unit 9
Etc.

FIG. 5 is a plan view of the operating portions 25, 26, 52, and FIG. 6 is a sectional view taken along the line VI-VI of FIG. The operation portions 25, 26, 52 are provided with, for example, an operation knob 66 rotatably provided on a base portion 65, and a drive gear 67 is provided on the operation knob 66.
Is integrally attached to the drive gear 67, and the inner cables 42 and 62 of the control cables 24L, 24R, and 51 are connected to the driven gear 68 that meshes with the drive gear 67 so as to rotate integrally, and the outer cables 43 and 63 are attached to the base portion 65. It is fixed.

Therefore, when the operation knob 66 is twisted,
The inner cables 42 and 62 are rotationally driven to rotate the rotor 41 in the damping force adjusters 23L and 23R and the rotor 61 in the damping force adjuster 50, and the valve element 36 or the needle valve 58 moves to move the front-rear suspension. The damping force of is adjusted.

As shown in FIGS. 1 and 4, the individual operating portions 25, 26, 52 and the control cables 24L, 24R, 51 connected to them are provided with corresponding damping force adjusters 23L, 23R, 50. It is arranged on the vehicle body in line with one side.

That is, the operating portion 25 corresponding to the damping force adjuster 23L provided on the left side of the front fork 7.
The control cable 24L and the control cable 24L are arranged on the left side with respect to the center of the vehicle body (body frame 2), and the damping force adjuster 23R is provided on the right side of the front fork 7.
Operation unit 26 and control cable 24 corresponding to
The R is arranged on the right side with respect to the center of the vehicle body.

Further, since the reservoir tank 48 is arranged on the left side of the vehicle body, the operating portion 52 and the control cable 51 corresponding to the damping force adjuster 50 provided on the reservoir tank 48 are also arranged on the left side of the vehicle body. ing. Here, the operation section 52 is arranged, for example, on the right side of the operation section 25.

With this construction, the rider of the motorcycle 1 is kept in the riding posture and each damping force adjuster 2 is used.
It is possible to operate or confirm 3L, 23R, 50.

Further, each control cable 24L, 2
Since 4R and 51 are respectively arranged along one side of the vehicle body, the bending radius of the control cables 24L, 24R and 51 is increased, friction loss is reduced and the operation is ensured.
There is no fear that the steering operation will be hindered by R, 51, and the control cables 24L, 24R,
The assembling property of 51 becomes good, and the cost can be reduced.

[0035]

As described above, in the damping force adjusting device for a motorcycle suspension according to the present invention, a damping force adjuster for adjusting the damping force of the suspension is provided in each of the front fork and the rear shock absorber. In a two-wheeled vehicle, the operating parts of the respective damping force adjusters are individually installed at locations where the rider can visually check and operate in the riding posture, and these operating parts are connected to the respective damping force adjusters by remote operation members, and The operation section and the remote operation member connected to these are arranged on the vehicle body in alignment with the side on which the corresponding damping force adjuster is provided.

Therefore, it is possible to operate or check each damping force adjuster while the rider of the motorcycle is in the riding posture.

Further, since each remote operation member is arranged along one side of the vehicle body, the radius of curvature of each remote operation member is increased, friction loss is reduced, and the operation is ensured. Does not hinder the steering operation, and the assemblability of the remote control member is greatly improved.

[Brief description of drawings]

FIG. 1 is a left side view of a motorcycle showing an embodiment of the present invention.

FIG. 2 is a vertical sectional view of a front fork and a damping force adjuster.

FIG. 3 is a vertical sectional view of a reservoir tank and a damping force adjuster.

FIG. 4 is a plan view of the periphery of the handlebar as seen from the arrow IV in FIG.

FIG. 5 is a plan view of an operation unit.

6 is a sectional view taken along line VI-VI of FIG.

[Explanation of symbols]

1 Motorcycle 2 Body Frame 6 Front Wheel 7 Front Fork Serving as Front Wheel 13 Rear Wheel 14 Swing Arms 23L, 23R, 50 Damping Force Adjusters 24L, 24R, 51 Control Cables 25, 26, 52 Operating Parts 42 , 62 Inner cable 43, 63 Outer cable 44 Rear shock absorber 47 Rear suspension mechanism 48 Reservoir tank

Claims (1)

[Claims] 1. In a motorcycle in which a damping force adjuster for adjusting a damping force of a suspension is provided on a front fork, a rear shock absorber, etc., a rider can visually check and operate the damping force adjuster at a position in which the rider can ride. The operating sections are individually installed, and these operating sections are connected to the respective damping force adjusters by remote control members, and the individual operating sections and the remote control members connected thereto are provided with corresponding damping force adjusters. A damping force adjusting device for a suspension for a motorcycle, wherein the damping force adjusting device is arranged on the vehicle body so as to be aligned with the side on which the vehicle is provided.