JPH0221785Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a sound device for a motorcycle, and more particularly to a location where a noise detector for detecting external noise is installed.

In recent years, even motorcycles are being equipped with sound devices such as radios. However, since the body structure of motorcycles is completely different from that of ordinary four-wheeled vehicles, when the volume of the sound device is kept constant, it is difficult to adjust the volume when the vehicle is stopped or when the wind is turned off while driving, or when the vehicle is on a truck or the like. There is a large difference in the volume perceived by the driver when the vehicle is close to another vehicle. That is,
In a motorcycle, the volume perceived by the driver is easily affected by external noise.

Therefore, the audio device is usually provided with an automatic volume control device and a noise detector for detecting external noise is provided in the vehicle body, so that the volume is adjusted according to the external noise. It is preferable to arrange the noise detector in a place close to the speaker of the audio device, but if the noise detector is arranged in such a place, it will mainly detect the speaker sound rather than the external noise, and as a result, There is a problem in that the volume is not sufficiently adjusted according to external noise.

The present invention was developed in view of the above points, and its purpose is to minimize the influence of the sound source of the motorcycle's acoustic device and to install a noise detector at a location where external noise can be effectively detected. do.

In order to achieve this purpose, in this invention,
A sound device for a motorcycle that automatically adjusts the volume according to the noise detected by a noise detector, which is separated from the sound source of the sound device by another member, and which is attached to the motorcycle and covers the front and sides of the vehicle. The present invention provides an acoustic device for a motorcycle in which the noise detector is disposed at a location close to the outer panel of a surrounding fairing.

An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

1 and 2, a front fork 5 that pivotally supports a front wheel 4 is rotatably supported on a head pipe 3 of a body frame 2 of a motorcycle 1, and a handle 6 is attached to the upper part of this front fork 5. ing. A rear wheel 7 is installed at the rear of the vehicle body frame 2.
A rear fork 8 that pivotally supports the rear fork 8 is swingably mounted with a pivot bolt (not shown). An engine 9 is mounted at the lower center of the vehicle body frame 2.
The rotation of the engine 9 is transmitted to the rear wheels 7 via a chain (not shown). A seat 10 is disposed approximately in the upper center of the vehicle body frame 2, and a fuel tank 11 is provided between the head pipe 3 and the seat 10.

A fairing 12 that surrounds both sides from the front of the vehicle body is attached to the vehicle body frame 2 via a fairing frame 30. The upper part 12a of the fairing 12 surrounds a headlight case and a headpipe 3 (not shown), and The lower side part (under fairing) 12b surrounds the front side part of the vehicle body frame 2. A wind screen 13 is screwed and fixed to the upper part 12a of the fairing 12 at a position in front of the handle 6 by bolts (not shown).

At a predetermined position inside the upper part 12a of the fairing 12, for example, below the windscreen 13 and in front of the steering wheel 6, as shown in FIG. A pair of speakers 22 and 23 are arranged on both left and right sides of the vehicle 21 so as to face the driver. The volume setting and channel selection of the radio 21 are appropriately performed using knobs 21a and 21b, respectively. This radio 21 has a built-in automatic volume adjustment device, and automatically adjusts the volume output from speakers 22 and 23 in accordance with noise detected by a noise detector such as a microphone (both not shown).

As described above, the fairing 12 surrounds the vehicle body from the front to the sides. Therefore, the fairing 12 is used as a partition plate that separates the sound from the speakers 22 and 23 from external noise, and a microphone is installed in the fairing 12.

The location of the external noise detection microphone is shown in FIGS. 1 and 2 with a dashed mouth mark or O mark. The microphones in the upper part 12a of the fairing 12 can be placed inside the fairing 12 and above or below the headlight 14.
There are rear positions 12c, 12d, and 12e, or inside the side pocket 12f of the fairing 12, for example, position 12g. Each of these positions is separated from the sound source of the audio device by other members mounted on the vehicle, such as a headlight and a coupler box, so that the influence of the audio device is small.

For example, when installing a microphone inside the fairing 12 and below the headlight 14, that is, at position 12d, as shown in FIG. A microphone 33 is fixed to this bracket 31 via an elastic support member 32. On the other hand, fairing 1
2, when installing it at the inner position 12g of the side pocket 12f (Fig. 2), as shown in Figs. Similarly, the microphone 36 is fixed via the elastic support member 35. At this time, in order to prevent the microphone 36 from detecting reflected sounds from sound sources such as the engine, the direction of the microphone 36 is approximately perpendicular to the direction of sound from these sound sources, as shown in FIG. In other words, it is made to be approximately parallel to the wall surface of the fairing 12.

Furthermore, if a microphone is to be disposed at the lower part of the fairing 1, that is, at the inner position 12h of the underfairing 12b, a mounting hole is bored in the wall surface of the underfairing 12b as shown in FIG. Insert the microphone 37 into the hole through the grommet 38 and tighten the threaded part 37 on the back.
Tighten and fix a with nut 39.

In addition to the above-mentioned fairing 12, FIGS.
As shown by the △ mark in the figure, the inner side of the fairing 12 and the approximately central part 5 of the front fork 5
A microphone may be disposed on the side of the coupler box 15 attached to the front fork 5 via the bracket 40, for example at position 15a. When placing microphones at each of these positions, there is no need to take any special measures against speaker noise or wind noise. In addition, when it is attached to the center part of the front fork 5, it is preferable to attach it via an elastic member such as rubber, and to take anti-vibration measures to prevent vibrations from the vehicle body.

In addition, when the microphone is installed in a position where wind noise is easily exposed to water while the vehicle is running, it is preferable to take appropriate measures such as measures against wind noise or water exposure.

Therefore, the microphone can be disposed at a position that is separated from the sound source of the audio device 21, that is, the speakers 22 and 23, and close to an external noise source caused by another vehicle or the like.

As explained above, according to the present invention, in an acoustic device for a motorcycle that automatically adjusts the volume according to noise detected by a noise detector, the acoustic device is separated from the sound source by another member, and is connected to the motorcycle. Since the noise detector is located close to the outer panel of the fairing that surrounds the front and sides of the vehicle, the influence of the sound source of the on-vehicle audio device is reduced, and external noise is effectively controlled. This allows the driver to always adjust the volume to the optimum level for the driver.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of a motorcycle equipped with a built-in acoustic device according to the present invention, FIG. 2 is a top view of FIG. 1, and FIG. FIGS. 4 to 7 are enlarged views of essential parts showing an example of the attached state of the microphone shown in FIGS. 1 and 2. FIGS. 5...Front fork, 5a, 15a...Microphone mounting position on front fork, 1
2... Fairing, 12c to 12e, 12g,
12h... Microphone mounting position on the fairing, 21... Sound device, 22, 23... Speaker, 33, 36, 37... Microphone.

Claims (1)

[Scope of utility model registration request] A sound device for a motorcycle that automatically adjusts the volume according to the noise detected by a noise detector, which is separated from the sound source of the sound device by another member, and which is attached to the motorcycle and covers the front and sides of the vehicle. A sound device for a motorcycle, characterized in that the noise detector is disposed at a location close to an outer panel of a surrounding fairing.