JPH0433191Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a vehicle height detection device for a motorcycle having a vehicle height adjustment device, particularly to a vehicle height detection device provided on the front wheel side.

(Prior Art) In general, in motorcycles, if the vehicle height is not adjusted according to changes in the rider's weight, sitting height, road surface running conditions, and other load loads, the ride will be uncomfortable and the riding posture will be affected. Not only does it worsen, but it also significantly impairs driving safety. for example,
When you brake suddenly, your center of gravity moves forward,
As the front fork compresses, the rear wheel cushion unit expands, making the riding posture worse. This makes it possible to adjust the vehicle height according to changes in the live load, the weight, height, and preferences of the driver even when the load is stationary. Or, it is desirable to incorporate a device that automatically detects changes in vehicle height during cornering and adjusts the vehicle height so that the vehicle height can be corrected.

(Problem that the invention aims to solve) In order to incorporate a vehicle height adjustment device into a motorcycle, it is necessary to detect the vehicle height at the front and rear of the vehicle body, but when trying to apply it to the front suspension, the steering shaft member usually It is integrated with the front fork, and since the front fork swings about 40 degrees in the positive and negative directions around the steering axis,
There is a problem in that the vehicle height detection device cannot be directly attached. For this reason, at present, a motorcycle equipped with a vehicle height detection device using a fork has not yet been put into practical use.

An object of the present invention is to provide a vehicle height detection device for a motorcycle that solves the above-mentioned problems.

(Means for Solving the Problems) As a means for solving the above problems, the present invention provides a support shaft for the front fork side vehicle height detection device support member when configuring a vehicle height detection device for a motorcycle. It is installed on the axis of the steering shaft, and the support shaft of the frame side vehicle height detection device support member is installed approximately horizontally, and the front fork side end of the vehicle height detection device is attached rotatably around the steering shaft. The frame side end of the device is attached so that it can rotate freely in the vertical direction.

(Function) With the above configuration, the present invention locates the support point of the front fork side end of the vehicle height detection device on the axis of the steering shaft, eliminates the influence of steering on the vehicle height detection device, and eliminates the influence of steering on the vehicle height detection device. Shaking is prevented and only the vehicle height can be detected.

(Example) Hereinafter, illustrated embodiments of the present invention will be described.

As shown in FIGS. 1 to 3, the outer tube 2 of the front fork 1 has a vehicle height detection device support member 3 extending between the outer tubes 2 at the upper end thereof. At the center of the vehicle height detection device support member 3,
The axis of the support shaft 7 of the vehicle height detection device 6 is aligned with the axis 5 of the steering shaft 4 at a position where the axis 5 of the steering shaft 4 intersects when extended downward, and the support shaft 7 is moved to the vehicle height detection device support member 3. Provided for. A vehicle height detection device support member 10 is mounted on the down tube 9 of the vehicle body frame 8 on the vehicle body center line on the front fork side.
is attached by drilling a hole 12 for horizontally attaching the support shaft 11.

As shown in FIG. 3, the vehicle height detection device 6 has a rod-shaped sliding body 16 slidably fitted into a cylindrical main body 15. Main body side tip 17 of rod-shaped sliding body 16
is formed into a flat plate shape, and a connecting portion 18 with a supporting member is formed at the other end. Photo couplings 19 and 20 are assembled in the center of the cylindrical body 15 in close proximity to the flat surface of the body-side tip 17 of the rod-shaped sliding body 16, and a support member and a support member are attached to the end opposite to the rod-shaped sliding body fitting side. A connecting portion 21 is formed. The support shaft fitting holes 18a and 21a formed in the connection part 18 of the rod-shaped sliding body 16 and the connection part 21 of the cylindrical body 15 are arranged so that their axes are shifted by 90 degrees from each other so that they can be attached to the respective support members.

In FIG. 1, a connection portion 21 of a cylindrical body 15 is connected to a vehicle height detection device support member 10 provided on a down tube 9.
The support shaft 11 is rotatably fitted and attached to the support shaft fitting hole 21a, and the connecting portion 18 of the rod-shaped sliding body 16 is attached to the vehicle height detection device support member 3 provided on the outer tube 2 of the front fork 1. A rod-shaped sliding body 16 is connected to the support shaft 7 with a spherical bearing 22 interposed between the support shaft 7 and the support shaft fitting hole 18a.
is attached so as to be swingable about an axis perpendicular to the axis of the support shaft 7.

In such an embodiment, the front fork 1 swings around the axis 5 of the steering shaft 4 to change the direction of travel when the steering wheel is operated while driving. Since its axis coincides with the axis of the steering shaft 4, the vehicle height detection device 6 does not sway horizontally. In response to vertical movement of the wheels due to unevenness of the road surface, the vehicle height detection device can swing up and down between the support shaft 7 and the support shaft fitting hole 18a, which are connected via the spherical bearing 22, and the support shaft 11 is The front fork 1 can be shortened because it can swing up and down between the fitted vehicle height detection device support member 10 and the connecting part 21, and the rod-shaped sliding body 16 can move in the axial direction with respect to the cylindrical main body 15. In this case, when the front fork 1 is extended as shown by the two-dot chain line in FIG. 1, the vehicle height detection device 6 moves as shown by the solid line in FIG.

In this embodiment, it is possible to avoid the influence of steering wheel operation, and it is possible to detect the vehicle height on the front wheel side of the vehicle height detection device with high accuracy. Since the outer tube 2 of the front fork 1 is connected at both the left and right upper ends by the vehicle height detection device support member 3, the rigidity of the front fork is increased. Since the length change of the vehicle height detecting device 6 is small with respect to the stroke of the front fork 1, the overall length of the vehicle height detecting device 6 can be shortened and the vehicle can be miniaturized.

(Effect of the invention) As described above, in the present invention, the support shaft of the front fork side vehicle height detection device support member is provided on the axis of the steering shaft, and the front fork side end of the vehicle height detection device is rotated around the steering shaft. Because it is movably mounted, it is possible to avoid the vehicle height detection device from lateral shaking during steering, and the vehicle height detection device can be mounted using the front fork, allowing for highly accurate vehicle height detection. In addition, the support shaft of the frame side vehicle height detection device support member is installed approximately horizontally, and the frame side end of the vehicle height detection device is attached so as to be rotatable in the vertical direction, so that the vehicle height detection device is always bent. The orientation can be changed to avoid stress. Since the vehicle height detection device is provided between the front fork and the frame, the amount of displacement of the vehicle height detection device with respect to the stroke of the front fork becomes small, and the vehicle height detection device can be made smaller.

[Brief explanation of the drawing]

Fig. 1 is an explanatory side view showing a motorcycle equipped with a vehicle height detection device according to the present invention, Fig. 2 is a front view showing a frame of a motorcycle equipped with a vehicle height detection device according to the present invention, and Fig. 3 is a side view showing a motorcycle equipped with a vehicle height detection device according to the present invention. FIG. 2 is a longitudinal cross-sectional view of a vehicle height detection device used in the invention. 1...Front fork, 2...Outer tube, 3...(Front fork side) vehicle height detection device support member, 4...Steering shaft, 5...Axis (of the steering shaft), 6...Vehicle height detection device, 7...
... (Front fork side) Support shaft, 8 ... Body frame, 9 ... Down tube, 10 ... (Frame side) Vehicle height detection device support member, 11 ... (Frame side) Support shaft, 15 ... Tube Shape body, 16...
Rod-shaped sliding body, 18... (of the rod-shaped sliding body) connection part,
19, 20...Photo cutlet plastic, 21...Connection part (of the cylindrical body).

Claims (1)

[Scope of utility model registration request] The support shaft of the front fork side vehicle height detection device support member is provided on the axis of the steering shaft, the support shaft of the frame side vehicle height detection device support member is provided approximately horizontally, and the front fork side end of the vehicle height detection device is connected to the steering shaft. A vehicle height detection device for a motorcycle, characterized in that the vehicle height detection device is rotatably mounted around an axis, and the frame side end of the vehicle height detection device is rotatably mounted in the vertical direction.