JPS6213908Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mounting structure for a speaker for a motorcycle.

Recently, there has been a trend toward luxury motorcycles, and motorcycles equipped with audio equipment such as radio receivers are already known. When installing this audio equipment, if a speaker is used alone, the sounds in front and behind the speaker will interfere and cancel out the bass.
Furthermore, if the system is used by being attached to a speaker cabinet, the system becomes large, the mounting structure becomes complicated, and the load acting on the mounting portion becomes large. Furthermore, when mounted on a motorcycle, the speaker device will be exposed to the outside air, so protection measures against rainwater and the like are also required.

Therefore, an object of the present invention is to provide a mounting structure for a motorcycle speaker that has the same acoustic function as that used without using a speaker cabinet.

According to the present invention, a chamber having a predetermined volume is defined on the inner plate of the front cowl located in front of the steering wheel and on the lower inner side of the windscreen provided on the upper part of the front cowl, and is attached to the rear surface of this chamber in the longitudinal direction of the vehicle body. A standing wall portion with holes formed therein is provided,
A speaker is mounted in the mounting hole facing toward the rear of the vehicle body, and a porous cover is attached to the outside of the mounting hole to cover the speaker with a predetermined space between it and the front surface of the speaker. The front cowl doubles as a speaker cabinet,
Further, a duct for communicating the chamber with the outside is formed by an integral member at the lower part of the upright wall, and the duct opens upward in the chamber.

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a front view of a motorcycle according to the present invention as seen from a riding position, and FIGS. 2 and 3 show left and right side views. In the figure, reference numeral 1 denotes a front cowl equipped with a screen 2. The cowl 1 consists of an outer plate and an inner plate, and is constructed integrally with the vehicle body, and is, of course, separate from the handlebar 3. A space is defined by the outer and inner plates of the front cowl 1, and the space located on the right side of the vehicle body accommodates audio equipment such as a radio unit body 4, a transceiver unit body 5, and a power amplifier 6. A cassette player 12 is stored in the space located on the left side of the vehicle body, along with a radio controller 7, a transceiver controller 8, an intercom controller 9, an antenna distributor 10, and a multi-changer 11, near the bottom of the left grip 3A of the steering wheel 3. has been done.

The cassette player 12, as shown in FIG.
It is installed at an angle to the vehicle body in the direction of travel. Furthermore, as shown in FIG. 1, the eject button 13 of the cassette player 12 is arranged outside the cassette insertion opening 14 with respect to the vehicle body, thereby improving the operability of the cassette player 12. That is, when the eject button 13 is pressed with the middle finger of the left hand, the ejected cassette half (not shown) is always returned to the palm of the left hand, thereby preventing it from flying out.

15 and 16 are a radio select switch and a transceiver talk switch attached near the left grip 3A of the handle 3, and 17 is a fuel tank. 18 is an air duct hole, 19L and 19R are left and right speakers, and 20 is a meter panel equipped with various indicators, which are installed in the front cowl 1.

Figure 4 shows the speaker mounting structure.
The speakers 19L and 19R are attached to the front cowl 1, and the front cowl 1 is also used as a speaker cabinet. That is, a speaker rear chamber 22 having a predetermined volume is defined on the inner plate 1a of the front cowl 1 located in front of the steering wheel 3 and on the lower inner side of the windscreen 2. An upright wall portion 24 in which a mounting hole 21 is formed is provided integrally with, for example, the inner plate 1a. Speakers 19L and 19R are installed in the mounting hole 21 so as to face the rear of the vehicle body, and a porous cover is provided outside the mounting hole 21 to cover the speakers 19L and 19R, leaving a predetermined space in front of the speaker. 25 is installed. With the above configuration, the front cowl 1 (inner plate 1a) plays the role of a speaker cabinet (acoustic functions such as the buffling effect). Note that 1b is the outer plate of the front cowl 1.

In addition, in the speaker mounting portion of the front cowl 1, a duct 2 is provided at the bottom of the upright wall portion 24 as an integral member to communicate the speaker rear chamber 22 with the outside.
3 is formed, and this duct 23 has a structure that opens upward within the speaker rear chamber 22. Therefore, the bass part of the sound coming from the rear of the speaker is phase inverted and radiated through the duct 23 in the same phase as the sound coming from the front. That is, the resonance frequency is determined by the air in the speaker rear chamber 22 and the air in the duct 23, and the phase is inverted. This improves the speaker characteristics for bass sounds. Moreover, since the duct 23 opens upward in the speaker rear chamber 22, not only moisture and the like inside the speaker can be discharged, but also rain and wind can be prevented from entering from the outside.

As described above, according to the present invention, the speaker is attached to the front cowl, and this front cowl is also used as a speaker cabinet, so the number of parts is reduced, the mounting structure is simplified, and the speaker mounting part is an integral member. This improves durability and also improves the strength of the front cowl itself. Furthermore, since the front cowl itself, which has a large mass, serves as a speaker cabinet, the resonance effect for bass sounds is improved.

Furthermore, since the speakers are arranged in front of the handlebars so as to face the rider, the sound from the speakers is effectively transmitted to the rider and can be heard without any problem even when riding.
Furthermore, since the speaker is provided upright below the windscreen and is covered on the outside with a cover, the speaker can be protected from rainwater, freezing, and the like.

Furthermore, by the action of the duct formed at the bottom of the standing wall, the speaker characteristics for bass sounds can be further improved, and the moisture inside the speaker can be efficiently discharged to the outside. This prevents rain and wind from entering from outside.

[Brief explanation of the drawing]

Fig. 1 is a front view of the motorcycle according to the present invention seen from the riding position, Fig. 2 is its left side view, and Fig. 3 is a front view of the motorcycle according to the present invention.
The figure is a right side view thereof, and FIG. 4 is a sectional view showing the speaker mounting structure. Explanation of symbols of main parts: 1...Front cowl, 3...Handle, 4...Radio unit body, 19R, L...Speaker, 22...Speaker rear chamber, 23...Duct.

Claims (1)

[Scope of utility model registration request] In a motorcycle in which an audio device is installed in the front cowl, a chamber having a predetermined volume is defined on the inner plate of the front cowl, which is located in front of the handlebars and inside the lower part of the windscreen provided at the top of the front cowl. An upright wall portion with a mounting hole is provided on the rear surface of this chamber in the longitudinal direction of the vehicle body, and a speaker is mounted in the mounting hole facing toward the rear of the vehicle body, and a predetermined space is provided between the front surface of the speaker and the outside of the mounting hole. A porous cover is attached to cover the speaker with a space of 1. A speaker mounting structure, wherein a duct is formed, and the duct opens upward in the room.