JPH04132892U - Motorcycle steering wheel correction device - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a steering wheel correction device for a motorcycle whose weight is unbalanced from left to right, which can shift the neutral position of the front fork from the center of the vehicle body and hold it with a spring, thereby ensuring straight-line performance. . [Configuration] The steering shaft 3 of the front fork is rotatably supported on the head pipe 5 at the front end of the frame, and a bar handle extending left and right is attached to the upper end of the front fork.
A spring 9 in the rotational direction is connected between the outer ring 7 and the inner ring 8, and the inner ring 8 is fixed to the steering shaft 3.
can be fixed to the head pipe 5 at an appropriate position.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a steering wheel correction device for a motorcycle.

0002

[Conventional technology]

Motorcycles have a front fork steering shaft attached to the head pipe at the front end of the frame. The foot is rotatably supported, and a bar handle extending left and right is attached to the upper end of the front fork. The bar handle is used to rotate the front fork left and right for steering. Motorcycle In a car, the weight on the left and right sides of the car body is balanced, and the center of gravity is located at the center of the car body. is desirable. However, depending on the installation location of heavy batteries, etc., the center of gravity may The position may shift to one side. A motorcycle whose center of gravity has shifted to one side in this way, The steering wheel is turned in a direction that shifts the center of gravity, and the vehicle does not drive straight. Also, the previous Hawk Similarly, objects whose center of gravity is off-center will not run straight. Furthermore, the key of the previous Hawk Motorcycles with large trail dimensions and flattened caster angles are prone to hand-holding when riding at low speeds. The handles tend to cut into each other on their own, which is inconvenient as it requires a lot of force to operate the handle. be. A damper was attached to the handle to adjust the steering force to an appropriate level. There is something. For example, see Japanese Utility Model Application Publication No. 56-116291.

0003

[Problem that the idea aims to solve]

The steering wheel damper maintains the steering force at an appropriate level and balances the left and right weight. It does not correct the lance.

0004 In view of these points, this invention was developed for a motorcycle with unbalanced weight on the left and right sides. The neutral position of the brake can be shifted from the center of the vehicle body and held by a spring, improving straight-line performance. The purpose of the present invention is to obtain a steering wheel correction device for a motorcycle that can ensure the following.

[0005]

[Means to solve the problem]

In order to achieve the above purpose, the motorcycle steering wheel correction device of this invention The steering shaft of the front fork is rotatably supported on the head pipe at the front end of the frame. A bar handle that extends left and right is attached to the upper end of the front fork, and the outer ring and inner ring A spring in the rotational direction is connected between the wheels, and the inner ring is fixed to the steering shaft. The reason is that the outer ring can be fixed to the head pipe at an appropriate position.

[0006]

[Effect]

A motorcycle whose center of gravity has shifted to one side, and the handlebars are initially on the opposite side of the direction in which the center of gravity has shifted. The free position of the spring connected between the outer ring and the inner ring prevents the spring from breaking when the center of gravity shifts. Fix the outer ring to the head pipe while turning the handle so that it is facing in the opposite direction. By doing this, it is possible to balance the shift in the center of gravity and the steering wheel, improving straight-line performance. can be kept.

[0007]

【Example】

Embodiments of the present invention will be described below with reference to FIGS. 1 to 5. The steering shaft 3 of the front fork 2 rotatably supports the front wheel 1 at its lower end. It is inserted into the head pipe 5 of the frame 4 and rotatably supported. And the front ho A bar handle 6 extending left and right is attached to the upper end of the rack 2. The front wheel 1 is steered by rotating the Hawk 2 left and right.

[0008] A spiral spring 9 is arranged between the outer ring 7 and the inner ring 8, and both ends of the spring 9 are connected to the outer ring. 7 and the inner ring 8. Then, insert it into the head pipe 5 and The inner ring 8 is fixed to the pin 10 of the shaft 3. In addition, the outer ring 7 has a groove 11 at the center of the outer circumference. It can be fixed to the head pipe 5 with the screw 12 screwed into the head pipe 5. It's there. Further, cover plates 13 are attached to the top and bottom of the outer ring 7, and stoppers 14 are attached to the top and bottom of the outer ring 7. It is fixed in place. The spring 9 has a spiral shape, but the outer ring 7 and the inner ring A plurality of coil springs may be arranged radially between the rings 8.

[0009] As shown in Figure 6, in a motorcycle whose center of gravity G is shifted to the right by a dimension A, the motorcycle When you take your hands off the motorcycle and drive it, the motorcycle tilts to the right of the center of gravity G, and the bar handle 6 The motorcycle first curves to the left, then the motorcycle attempts to curve to the right. Therefore When the bar handle 6 is rotated to the right by an angle of θ, the spring 9 is released. Then, fix the outer ring 7 to the head pipe 5 with the screws 12. This initially resulted in The spring 9 can even out the tendency of the handle 6 to turn to the left, and the automatic rotation You will be able to drive the wheeled vehicle straight ahead by hand.

0010

[Effect of the idea]

As explained above, this invention is configured as described above, so A spring inserted between the tearing shaft and head pipe that acts in the direction of rotation of the bar The steering wheel can be balanced to one side, and the center of gravity is shifted to one side. You can make a wheeled vehicle go straight. Also, for motorcycles with large trail dimensions, The spring works to prevent the handle from cutting at low speeds and restore it, making it easier to operate the handle. can be made lighter. Since it is installed inside the head pipe, it does not interfere with other parts. You can avoid it, and you can do it in a nice manner without being visible.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing an embodiment of the present invention.

FIG. 3 is a longitudinal sectional view showing an embodiment of the present invention.

FIG. 4 is a side view of the entire motorcycle showing an embodiment of the present invention.

FIG. 5 is a plan view showing how the outer ring with the spring attached thereto is fixed to the head pipe according to the embodiment of the present invention.

[Explanation of symbols]

2 front hawk 3 Steering shaft 4 frames 5 Head pipe 6 bar handle 7 Outer ring 8 Inner circle 9 spring

Claims (1)

[Scope of utility model registration request] Claim 1: A steering shaft of the front fork is rotatably supported on a head pipe at the front end of the frame, and a bar handle extending left and right is attached to the upper end of the front fork,
A steering wheel correction device for a motorcycle, characterized in that a spring in the rotational direction is connected between an outer ring and an inner ring, the inner ring is fixed to a steering shaft, and the outer ring is fixed to a head pipe at an appropriate position.