JPH04133886A - Fairing mount construction for motorcycle - Google Patents

Abstract

PURPOSE:To reduce vibration of mirrors with low cost by floatingly supporting a cowling brace supporting a fairing provided with mirrors with the upper part of a head pipe, and fixedly supporting it with the lower part of the head pipe. CONSTITUTION:In the construction in which the upper cowl 11 of a fairing 10 is supported with a head pipe 5 through a cowling brace 14, the cowling brace 14 is constituted out of a pair of right and left brace tubes 15 nearly curved in a U-shape, a brace upper bridge 16 hung over between the brace tubes 15, and a brace lower bridge 18 hung over between the brace tubes 15 through a reinforcement 17. The bridges 16, 18 are fixed to the head pipe 5 through an upper tube 19A and a lower tube 19B, an upper holder 20 and a lower holder 21, and the like. On the upper end parts of a pair of right and left brace tubes 15, mirror fitting brackets 22 are provided, and mirrors 39 are fitted on them.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a fairing mount structure that covers the front of a motorcycle.

(Conventional technology) Motorcycles have a fairing that covers the front of the vehicle.
Some have reduced air resistance. Such a fairing is supported by a head pipe of a vehicle body frame using a cowling brace, and a mirror for rear confirmation is floatingly supported on this fairing.

However, with this kind of fairing mount device,
Large vibrations in the upper part of the head pipe are transmitted to the fairing via the cowling brace, and as a result, there is a risk that the vibrations in the mirror will increase.

On the other hand, some models have rearward confirmation mirrors floatingly supported by mirror mounting stays fixed to the head pipe. However, in this case, the mirror mounting stay is installed outside the cowling brace that supports the fairing, which has the disadvantage of increasing costs.

(Problems to be Solved by the Invention) As described above, with the conventional fairing mount device and mirror mounting device, there is a risk that the vibration of the rear confirmation mirror increases and the cost increases.

The present invention has been made in consideration of the above-mentioned circumstances, and an object of the present invention is to provide a fairing mount device for a motorcycle that can reduce vibrations of a mirror installed in a fairing at low cost.

[Structure of the invention]

(Means for Solving the Problems) This invention provides a fairing mount for a motorcycle in which a mirror is installed on a fairing that covers the front of the vehicle, and the fairing is supported by a head pipe of a body frame via a cowling brace. In the structure, the cowling brace is floatingly supported on the top of the head pipe,
It is characterized by being fixedly supported at the bottom of the head pipe.

(Function) Generally, the vibration of the head pipe is large at the top and small at the bottom. Therefore, according to the fairing mount structure for a motorcycle according to the present invention, the cowling brace that supports the fairing is floatingly supported on the upper part of the head pipe, so it is possible to reduce the vibration transmitted from the upper part of the head pipe to the cowling brace. . At the same time, since the cowling brace is fixedly supported at the lower part of the head pipe, the mounting strength of the cowling brace can be improved. For these reasons, the rigidity and vibration isolation of the fairing can be ensured, and the vibration of the mirror installed in this fairing can be reduced.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a partial sectional view of a motorcycle, showing an embodiment of a motorcycle fairing mount structure according to the present invention, with a part thereof shown in cross section, and with a front fork omitted. FIG. 2 is an overall side view of a motorcycle to which the embodiment of FIG. 1 is applied.

As shown in FIG. 2, a motorcycle has a front wheel 1 and a rear wheel 2 disposed at the front and rear of the vehicle, and the front wheel 1 is pivotally supported by the lower end of a front fork 3.
is rotatably supported by a head pipe 5 of a vehicle body frame 4, and the front wheels 1 are steered. Reference numeral 6 denotes a handle fixed to the upper end of the front fork 3.

The rear wheel 2 is pivotally supported via a swing arm 7 so as to be swingable in the vertical direction of the vehicle, and is buffer-suspended by a reaction unit (not shown). This rear wheel 2 is driven by an engine (not shown) mounted on a vehicle body frame 4. A fuel tank 8 is arranged above the engine, and a seat 9 is arranged behind the fuel tank 8.

A fairing 10 is arranged in a region in front of the vehicle from the front fork 3 to the engine 4.

The fairing 10 includes an upper cowl 11, a center cowl 12, and a lower cowl 13, of which the upper cowl 11 is supported by the head pipe 5 of the vehicle body frame 4 by a cowling brace 14.

Next, the mounting structure of the upper cowl 11 on the head pipe 5 will be explained.

First, as shown in FIGS. 6 to 8, the cowling brace 14 has a pair of left and right place tubes 15 that are curved toward the front of the vehicle in a substantially U-shape, and a hook is passed between these place tubes 15. It is configured to include a place upper bridge 16 and a place lower bridge 18 which is extended between a pair of left and right place tubes 15 via a lower bridge reinforcement 17.

A place upper tube 19A and a place lower tube 19B are provided at the center positions of the place upper bridge 16 and the place lower bridge 18 in the left-right direction of the vehicle, respectively.
are fixed to each other, and a place upper holder 20 and a place lower holder 21 are respectively fixed to their respective tips. These upper place holder 20 and lower place holder 21 are formed to have a U-shaped cross section.

A mirror mounting bracket 22 is installed at the upper ends of the pair of left and right place tubes 15. Each place tube 15
A place tube reinforcement 23 is fixed near the joint between the upper bridge 16 and the place upper bridge 16.

Further, a headlamp upper bracket 24 and a headlamp lower bracket 25 (not shown) for mounting headlamps are respectively fixed to the place upper bridge 16 and the place lower bridge 18. The cowling brace 14 is constructed as described above.

Now, as shown in FIG. 2, an upper bracket 26 and a lower bracket 27 are fixed to the head pipe 5 at its axially central upper and lower parts, respectively. A connecting piece 28 is fixed to these upper and lower brackets 26 and 27 with bolts 29 or the like (FIG. 3).

Connecting piece 281, fairing 10
An upper hole 30 and a lower hole 31 are respectively bored on the sides. An elastic bushing 3 is inserted into the upper hole 30 as shown in FIG.
2 is fitted, and a spacer 33 is interposed inside this elastic bush 32. Connecting piece 2 in this state
8 is fitted into the place upper holder 20 and place lower holder 21 of the cowling brace 14. Then, insert the bolt 34 into the lower hole 31 of the place lower holder 21 and the connecting piece 28, and then tighten the nut 35.
By tightening it, it is fixedly supported at the lower part of the head pipe 5 via the cowling brace 14 or the connecting piece 28.

In addition, the place upper holder 20 and the spacer 33
By inserting the bolt 36 therein and tightening it with the nut 37, the cowling brace 14 is floatingly supported on the upper part of the head pipe 5 using the elastic bushing 32. The elastic bushing 32 has a cylindrical shape as shown in FIG. 5, and has flanges 38 projecting from both outer ends thereof to prevent the bushing from being pulled out.

As shown in FIG. 1, the upper cowl 11 is installed on the cowling brace 14 supported by the head pipe 5 as described above. A mirror 39 for rear confirmation is attached to the cowling brace 14 from the outside of the upper cowl 11.
It is fixed to the mirror mounting bracket 22 with bolts (not shown) or the like.

Generally, the vibration of the head pipe 5 of the vehicle body frame 4 is greater in the upper part than in the lower part. Therefore, according to the above embodiment, the place upper tube 19A of the cowling brace 14 is floatingly supported at the upper center of the head pipe 5 by the elastic bushing 32, so that vibrations from the upper center of the head pipe 5 are absorbed by the elastic bushing 32. Can be attenuated. As a result, vibration of the mirror 39 attached to the mirror attachment bracket 22 of the cowling brace 14 can be reduced.

Furthermore, the headlamp upper bracket 24 and the headlamp lower bracket 2 of the cowling brace 14 are
When a headlamp (not shown) is installed in 5, since the vibration of the cowling brace 14 is reduced by the elastic bushing 32, the frequency of headlamp breakage can also be reduced.

Also, place lower tube 1 of cowling brace 14
9B is fixedly supported at the lower part of the head pipe 5, the mounting strength of the cowling brace 14 is improved, and as a result, the rigidity of the fairing 10 can also be improved.

Furthermore, since the mirror 39 is attached to the mirror attachment bracket 22 formed on the upper part of the place tube 15 of the cowling brace 14, there is no need to attach the attachment stay for the mirror 39 to the head pipe 5, which can reduce costs. .

〔Effect of the invention〕

As described above, according to the motorcycle fairing mount structure according to the present invention, the cowling brace that supports the fairing in which the mirror is installed is floatingly supported on the upper part of the head pipe, and fixedly supported on the lower part of the head pipe. Therefore, the vibration of the mirror can be reduced at low cost.

[Brief explanation of drawings]

FIG. 1 is a partial side view of a motorcycle showing an embodiment of the fairing mount structure for a motorcycle according to the present invention, with a part thereof shown in cross section and the front fork omitted; FIG. 3 is an assembled perspective view showing the installed state of the cowling brace shown in FIG. 1; FIG. 4 is a sectional view taken along the TV-TV line in FIG. 1; 5 is a half-folded side view showing the elastic bushing shown in FIG. 4, FIG. 6 is a side view of the cowling brace shown in FIG. 1,
7 and 8 are a view in the direction of the ■ arrow and a view in the direction of the ■ arrow in FIG. 6, respectively. 5... Head pipe, 10... Fairing, 11
... Upper cowl, 14... Cowling brace,
15... Place tube, 19A... Place upper tube, 19B... Place lower tube, 2
0... Place upper holder, 21... Place lower holder, 22... Mirror mounting bracket, 28...
・Connecting bead, 32...Elastic bushing, 3
4...Bolt, 35...Nut, 36...Bolt, 37...Nut, 39...Mirror

Claims (1)

[Claims] In a motorcycle fairing mount structure in which a mirror is installed on a fairing that covers the front of the vehicle, and the fairing is supported by a head pipe of a body frame via a cowling brace, the cowling brace is attached to the upper part of the head pipe. A motorcycle fairing mount structure characterized by floating support and fixed support at the bottom of a head pipe.