JPS6315113Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a fairing device provided for the purpose of windshield, flow rectification, etc. of a motorcycle or the like.

2. Description of the Related Art A fairing is provided at the front of a vehicle body such as a motorcycle for the purpose of windshielding, rectifying air flow, and the like. Incidentally, in a motorcycle, a steering stem of a front fork, which constitutes a front wheel suspension device, is pivotally supported by a head tube at the front end of the frame, the upper end of the steering stem is connected to a top bridge, and a handlebar is provided so as to be suspended horizontally on the top bridge. When such a conventional steering device is provided, a steering wheel faces above the steering stem, and the steering wheel rotates back and forth in a plane about the steering stem during maneuvering. When installing a fairing for
The fairing bulges out to the left and right to avoid the rotational trajectory of the bar handle, and the windshield of the fairing is located at the front, and the windshield parts such as the legs also hang left and right from the fairing body, so they face forward. becomes. As a result, each part of the windshield faces forward from the occupant's body, and in order to protect the occupant from the wind, each part of the windshield is separated from the body.Improvements are desired in order to achieve an effective windshield. In order to do this effectively, this part goes around the sides, and the overall shape of the fairing becomes larger due to the bulging of the side part of the windshield and the placement of the screen part in the front. There is room for improvement, such as an increase in vehicle weight.

The present invention was devised in view of the above, and its purpose is to configure the steering stem with members on the front wheel suspension side and the handlebar side, and connect the stems to each other by tilting the handlebar side toward the rear of the vehicle body. As a result, the fairing can be installed near the steering stem of the front wheel suspension system, and each part of the fairing can be brought as close to the occupant's body as possible without interfering with steering operation, and the fairing can be made smaller and lighter. Furthermore, it is an object of the present invention to provide a fairing device for a motorcycle, etc., in which both sides of a screen portion can be raised to improve wind protection and flow rectification.

Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic side view of a motorcycle 1, in which a fuel tank 3 is arranged on the front part of a frame 2, a seat 4 is arranged behind this, and an engine 5 is mounted below the fuel tank 3. A rear wheel 6 is provided at the rear lower part of the frame.

An upper backbone frame member 2a is extended behind the head tube 7 at the front end of the frame 2, and a lower down tube 2b is extended rearward and downward. The portion 8a projects downward from the head tube 7 and is connected to a bridge 10 at the upper end of a front fork 9 forming a front wheel suspension device, so that the front fork 9 supports the front wheel 11 in a freely steerable manner.
The center line N of the stem 8 is tilted upward and backward due to the caster angle of the front fork 9. Stem 8 above
is rotatably supported by thrust and radial bearings 12, 12 provided at the upper and lower ends of the head tube 7.

The upper end of the stem 8 protrudes above the head tube 7, and a top plate 13 corresponding to a top bridge is connected to this protrusion.
is connected to the stem 8 by a cap nut 14 screwed into a threaded portion 8b formed at the upper end of the stem, and rotates together with the stem 8.

The base of the support stay 15, which has a substantially L-shaped side surface with a large angle, is connected to the front middle part of the head tube 7.
The upper part 15a of the support stay 15 is aligned with the axis N of the stem 8.
The head tube 7 is located at the upper end of the head tube 7, and its axis is parallel to the axis N of the stem 8.
The upper part of the support cylinder 16 tilted upward and backward at _N1 is pivotally connected via a bracket 16a and a pin 16b. Support tube 1
A second steering stem 17 is inserted into the support cylinder 16, and its axis _N1 is tilted upward and backward with respect to the axis N of the first steering stem 8, as described above, and is provided at the upper and lower ends of the support cylinder 16. It is rotatably supported by bearings 21, 21.

An arm 18 is fixed to the lower end protrusion of the support tube 16 of the second steering stem 17, and the arm 18 has arm portions 18a, 18a extending left and right.
On the other hand, the top plate 13 described above is provided with arm parts 13a, 13a extending left and right, and parallel left and right rods are connected between the outer ends of each arm part 18a, 13a via ball joints 19... 20,
Connect with 20. A skirt member 22 extends below the front of the support tube 16, a bent spring receiving portion 22a is formed below the skirt member 22, and a spring 23 is interposed between the spring receiving portion 22a and the lower part of the support stay 15. , the support tube 16 is rotated clockwise in FIG. 4 with the pin 16b as a fulcrum.

The upper end of the second steering stem 17 is made to protrude from the upper end of the support tube 16 tilted upward and backward, and a screw 17c is formed in the protruding part, and the handle 2 is attached to the screw 17c.
4, and screw them together with a cap nut 25.

As a result of the above, the handle 24 does not face an extension of the axis N of the first steering shaft 8 that constitutes a normal steering shaft, and the second steering shaft 8 is tilted upward and backward.
The steering wheel is placed at the end of the steering shaft 17 in a state where it lies at the rear of the vehicle body relative to the normal steering wheel position.

The operation of the handle 24 is the same as usual, and its rotation is controlled by the second steering shaft 17 and the arm 1.
8, the front fork 9 via the rod 20, the top plate 13, and the first steering stem 8.
is communicated to the pilot and steers the vehicle.

Fairing 25 at the front of the motorcycle 1
will be established. The fairing 25 includes an upper part 26a of the main body 26 facing in front of the handle 24, and side parts 26b extending from the left and right sides to both sides of the front part of the fuel tank 3.
etc., and a wind screen 27 erected above the front part of the main body 26. The conventional steering wheel faces above the front fork, that is, the first steering stem. Therefore, when considering the steering wheel handling, the windscreen B is located at the front as shown by the chain line A in Figure 1, and the steering wheel layout is Therefore, the lower side portions C of the windscreen B are cut downward. However, in the present invention, since the steering wheel 24 is lying down and is arranged at the rear, the wind screen 27 is as close as possible to the extension of the first steering stem 8 at the rear, and since the steering wheel is at the rear, the wind screen 27 is placed at the rear. There is no need to cut between the lower part of the screen 27 and the side part 26b, and the side part 26b can be merged with the rear end of the screen and can be made to stand up 26c continuously from side to side. Therefore, the entire fairing, especially the screen 27, approaches the passenger, and the lower left and right sides of the fairing stand up and are continuous with the screen, improving the windshield and rectification functions, and also shortening the front and rear dimensions of the fairing, making it easier to use. The overall shape can be made more compact.

Although the embodiments have been described in detail above, the specific shape and structure of the fairing may be arbitrary, and although the embodiments have been shown for motorcycles, the present invention can be applied to a tricycle having a similar front structure.

As is clear from the above, according to the present invention, it is possible to bring the fairing as close as possible to the passenger and to provide an upright portion upward to the left and right, thereby improving the windshield, function, and
It has many advantages such as further improving the rectifying function, shortening the front and rear dimensions of the fairing, making the fairing more compact, and making it lighter.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a schematic side view of the motorcycle, Fig. 2 is a perspective view of the handle mechanism, Fig. 3 is a side view of the same, and Fig. 4 is a longitudinal sectional side view of the same. It is. In the drawing, 8 is a steering stem of the front wheel suspension system 9, 17 is a steering stem of a handlebar 24, and 25 is a fairing.

Claims (1)

[Scope of utility model registration request] In a motorcycle, the steering stem has one end connected to a handlebar and the other end connected to a front wheel suspension system connected to a head tube, and a fairing attached to and supported by a body frame erected in front of the handlebar. The suspension system side and the steering wheel side are constructed separately, and the steering stem on the handle side is inserted into a support tube provided in the center of the vehicle body and tilted toward the rear of the vehicle body,
The steering stem is inserted into the head tube and has a larger angle of inclination than the steering stem on the front wheel suspension side to connect both steering stems to each other, and the fairing is provided near the steering stem on the front wheel suspension side, A fairing device for a motorcycle or the like, characterized in that the support tube extends rearward, and the handle is provided at an end of the extended portion.