JP2006027523A - Horn mounting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive horn mounting structure capable of securing horn sound pressure and reducing restriction on a design of a car body front part. <P>SOLUTION: This horn mounting structure 1 is constituted by mounting a horn 4 to generate alarming sound on the car body front part of an automobile having a front bumper 2 and a front grill 3 provided with a grill opening part 31 arranged above the front bumper 2. The horn 4 is arranged in the rear of the front grill 31. The horn mounting structure 1 has a sound pressure reflecting cover 5 arranged in the rear toward an outer periphery of the horn 4 from a back surface 32 of the front grill 3. The sound pressure reflection cover 5 is constituted with at least one of a part of a radiator support seal 6, a part of the front grill 3 and a part of the front bumper 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a horn mounting structure in which a horn that generates a warning sound is mounted on the front of a vehicle body.

  A horn for generating a warning sound is attached to the front of the vehicle body (see Patent Document 1). The horn for automobiles is required to have a sound pressure of 93 to 112 dB in accordance with vehicle regulations (Article 43 of Safety Standards for Road Transport Vehicles). In order to secure this horn sound pressure, the horn is sufficiently exposed from the grill opening of the front grill so as not to block the front of the horn. For example, the horn opening ratio, which is the ratio of the area of the horn exposed from the grill opening in front view, is set to 50% or more.

However, if an attempt is made to increase the grill opening to ensure a horn opening ratio of 50%, there may be restrictions on the design of the front grill, making it difficult to perform a desired design.
On the other hand, increasing the sound pressure of the horn itself may lead to an increase in the size and cost of the horn. Also, adding a special configuration only for improving the horn sound pressure is disadvantageous in terms of manufacturing cost.

Japanese Patent Laid-Open No. 11-34737

  The present invention has been made in view of such conventional problems, and an object of the present invention is to provide an inexpensive horn mounting structure capable of ensuring horn sound pressure and reducing the design restrictions of the front of the vehicle body. .

The present invention relates to a horn mounting structure in which a horn that generates a warning sound is mounted on the front of a vehicle body having a front bumper and a front grill provided with a grill opening disposed above the front bumper.
The horn is disposed behind the front grille,
The horn mounting structure has a sound pressure reflection cover disposed from the rear surface of the front grill toward the outer periphery of the horn.
The sound pressure reflection cover prevents a hot air from the engine from flowing around to the front of the radiator and prevents a part of the radiator support seal, a part of the front grill, and a part of the front bumper. The horn mounting structure is characterized by comprising at least one of the parts (claim 1).

Next, the effects of the present invention will be described.
The horn is disposed behind a front grill provided with the grill opening. The sound pressure reflection cover is disposed from the rear surface of the front grill toward the outer periphery of the horn. Therefore, the warning sound generated from the horn is guided to the front grill while being prevented from spreading by the sound pressure reflection cover. Therefore, a sufficient horn sound pressure can be secured in front of the vehicle.

This also ensures a sufficient horn sound pressure even if the horn aperture ratio decreases. Therefore, the grill opening of the front grill can be made small, and the restriction on the design of the front grill can be reduced.
The sound pressure reflection cover is configured by at least one of a part of the radiator support seal, a part of the front grille, and a part of the front bumper. Therefore, the horn sound pressure can be improved as described above without adding a new member as the sound pressure reflection cover. Thereby, the manufacturing cost can be reduced and an inexpensive horn mounting structure can be obtained.

  As described above, according to the present invention, it is possible to provide an inexpensive horn mounting structure that can secure the horn sound pressure and reduce the restriction on the design of the front portion of the vehicle body.

  In the present invention (Claim 1), the distance between the horn and the sound pressure reflection cover can be 8 to 30 mm. In this case, it is possible to secure horn sound pressure and save space, and to prevent interference between the horn and the sound pressure reflection cover.

The sound pressure reflection cover is preferably disposed at a position corresponding to the entire circumference of the horn in front view.
In this case, it is possible to effectively prevent the warning sound from spreading vertically and horizontally and to secure the horn sound pressure.

Further, it is preferable that the sound pressure reflection cover is also disposed behind the horn.
In this case, the horn sound pressure can be improved by reflecting the warning sound directed backward from the horn to the front.

Moreover, it is preferable that the space | interval of the front surface of the said horn and the rear surface of the said front grill is 8-30 mm.
In this case, the alarm sound can be more easily removed from the grill opening, and the alarm sound can be more reliably guided to the front of the vehicle body, and interference between the horn and the front grill can be prevented.
If the distance is less than 8 mm, the horn and the front grille may interfere with each other due to manufacturing variations, vibrations during vehicle travel, and the like, and the horn and the front grille may be damaged. On the other hand, if the distance exceeds 30 mm, it may be difficult to efficiently guide the alarm sound from the horn to the front of the vehicle body through the front grille.

The horn mounting structure preferably has a horn opening ratio of 35% or less, which is a ratio of an area of the horn exposed from the grill opening when viewed from the front.
In this case, variations in the design of the front grill can be ensured sufficiently.
When the horn opening ratio exceeds 35%, there is a possibility that the design restriction of the front grill becomes large.
From the viewpoint of securing the horn sound pressure, for example, the horn opening ratio is preferably set to 10% or more.

(Example)
A horn mounting structure according to an embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the horn mounting structure 1 of the present example has a front bumper 2 and a front grille 3 provided with a grille opening 31 disposed above the front bumper 2 at the front of a vehicle body. A horn 4 that generates sound is attached.

The horn 4 is disposed behind the front grille 3 as shown in FIGS.
The horn mounting structure 1 has a sound pressure reflecting cover 5 disposed from the rear surface 32 of the front grill 3 toward the outer periphery of the horn 4.
The sound pressure reflection cover 5 includes at least one of a part of the radiator support seal 6, a part of the front grill 3, and a part of the front bumper 2. In this example, the sound pressure reflection cover 5 is constituted by a part of the radiator support seal 6 and a part of the front bumper 2.

  As shown in FIG. 3, the radiator support seal 6 is a member for preventing hot air from the engine from flowing around the radiator 11 and preventing the radiator 11 from being exposed and improving its appearance. That is, the radiator support seal 6 is disposed so as to cover the gap between the upper surface portion of the radiator support 12 that fixes the radiator 11 and the upper surface portion of the front grill 3.

As shown in FIG. 4, the sound pressure reflection cover 5 is disposed at a position corresponding to the entire circumference of the horn 4 when viewed from the front. As shown in FIGS. 1 and 2, the sound pressure reflection cover 5 is also disposed behind the horn 4.
That is, the sound pressure reflection cover 5 is formed so as to cover the upper, left, right, and rear sides of the horn 4, and these are formed by a part of the radiator support seal 6. In addition, the sound pressure reflection cover 5 is formed below the horn 4 by extending a part of the front bumper 2 to the position of the front surface of the horn 4. Thus, the sound pressure reflection cover 5 is integrally formed as a part of the radiator support seal 6 or the front bumper 2.

Further, as shown in FIG. 2, the horn 4 is fixed to the radiator support 12 via an attachment member 42 fixed to the back surface. The sound pressure reflection cover 5 is provided with an opening 51 through which the attachment member 42 is inserted.
Further, as shown in FIG. 1, a front hood 13 is disposed above the front grill 3.

As shown in FIGS. 1 and 2, the distance d1 between the front surface 41 of the horn 4 and the front grill 3 is about 10 mm. The distance d2 between the horn 4 and the sound pressure reflection cover 5 is about 10 mm.
As shown in FIG. 4, the horn mounting structure 1 has a horn opening ratio of about 16%, which is a ratio of an area of the horn 4 exposed from the grill opening 31 when viewed from the front.
Here, the horn aperture ratio is defined as follows. That is, the area of the front surface 41 of the horn 4 in front view (the area of the hatched portion in FIG. 4) is S1, and the area of the portion where the front surface 41 of the horn 4 is visible from the grill opening 31 (dot hatching in FIG. 4). When the area is S2, the horn aperture ratio is S2 / S1.

Next, the function and effect of this example will be described.
The horn 4 is disposed behind the front grill 3 provided with the grill opening 31. A sound pressure reflection cover 5 is disposed from the rear surface 32 of the front grill 3 toward the outer periphery of the horn 4. Therefore, the warning sound generated from the horn 4 is guided to the front grill 3 while being prevented from spreading by the sound pressure reflecting cover 5. Therefore, a sufficient horn sound pressure, that is, a horn sound pressure that can satisfy vehicle regulations can be secured in front of the vehicle.

This also ensures a sufficient horn sound pressure even if the horn aperture ratio decreases. Therefore, the grill opening 31 of the front grill 3 can be made small, and the design restriction of the front grill 3 can be reduced.
That is, as in the present example, the horn aperture ratio can be set to about 16%, and thereby sufficient variations in the design of the front grill 3 can be ensured.

  The sound pressure reflecting cover 5 is constituted by a part of the radiator support seal 6 and a part of the front bumper 2. Therefore, the horn sound pressure can be improved as described above without adding any new member as the sound pressure reflection cover 5. Thereby, reduction of manufacturing cost can be aimed at and the cheap horn mounting structure 1 can be obtained.

Further, as shown in FIG. 4, the sound pressure reflection cover 5 is disposed at a position corresponding to the entire circumference of the horn 4 when viewed from the front, so that it is possible to effectively prevent the warning sound from spreading vertically and horizontally, The horn sound pressure can be ensured.
Further, since the sound pressure reflection cover 5 is also disposed behind the horn 4, the sound pressure toward the rear from the horn 4 is also reflected forward to improve the horn sound pressure. it can.

Further, the distance d1 between the front face 41 of the horn 4 and the front grill 3 is about 10 mm. As a result, the alarm sound from the grill opening 31 is improved, and the alarm sound can be guided more reliably to the front of the vehicle body, and interference between the horn 4 and the front grill 3 can be prevented.
That is, it is possible to eliminate the possibility of damaging the horn 4 and the front grille 3 due to interference caused by vibrations when the vehicle is running, and to efficiently guide the alarm sound from the horn 4 forward through the front grille 3. it can.

  Further, since the distance d2 between the horn 4 and the sound pressure reflecting cover 31 is about 10 mm, the horn sound pressure can be secured and the interference between the horn 4 and the sound pressure reflecting cover 5 can be prevented.

  As described above, according to the present example, it is possible to provide an inexpensive horn mounting structure that can secure the horn sound pressure and reduce the restriction on the design of the front portion of the vehicle body.

(Experimental example)
In this example, as shown in FIG. 5, the improvement of the horn sound pressure by the horn mounting structure of the present invention was evaluated.
As a measuring method, the measuring device 72 is moved within a height of 0.5 to 1.5 m at a position 7 m ahead of the front part 710 of the automobile 71 in accordance with vehicle regulations (Article 43 of Safety Standards for Road Transport Vehicles). The horn sound pressure was measured. And the maximum horn sound pressure in it was evaluated as a measured value.
This test was performed for the horn mounting structure of the present invention shown in the examples and the horn mounting structure of the comparative example. The horn mounting structure of the comparative example is a structure in which the sound pressure reflection cover 5 shown in the embodiment is not provided, and the rest is the same as the embodiment.

As a result of the above measurement, in the case of the horn mounting structure of the comparative example, the horn sound pressure was about 95 dB, whereas in the case of the horn mounting structure of the example, the horn sound pressure was about 101 dB, and the sound pressure was about 6 dB. Improvement was achieved.
As vehicle regulations, horn sound pressure needs to satisfy 93 to 112 dB.

  From the above results, the following is considered. That is, in the case of the horn mounting structure of the comparative example, the vehicle regulations are barely satisfied, but it cannot be said that it is sufficient in consideration of the fluctuation of the horn sound pressure by 2 to 3 dB due to the variation of the vehicle and the horn. . On the other hand, by adopting the horn mounting structure of the embodiment, the horn sound pressure can be improved, and the vehicle regulations can be sufficiently satisfied even when the above variation is taken into consideration.

The longitudinal cross-sectional view of the horn attachment structure in an Example. The horizontal sectional view of the horn attachment structure in an Example. Plane explanatory drawing of the vehicle body front part in an Example. The front view of the vehicle body front part in an Example. Explanatory drawing of the measuring method of a horn sound pressure in an experiment example.

Explanation of symbols

1 Horn mounting structure 2 Front bumper 3 Front grill 31 Grill opening 4 Horn 5 Sound pressure reflection cover 6 Radiator support seal

Claims (5)

In a horn mounting structure in which a horn that generates a warning sound is attached to the front of a vehicle body having a front bumper and a front grill provided with a grill opening disposed above the front bumper,
The horn is disposed behind the front grille,
The horn mounting structure has a sound pressure reflection cover disposed from the rear surface of the front grill toward the outer periphery of the horn.
The sound pressure reflection cover prevents a hot air from the engine from flowing around to the front of the radiator and prevents a part of the radiator support seal, a part of the front grill, and a part of the front bumper. A horn mounting structure comprising at least one of the parts.   The horn mounting structure according to claim 1, wherein the sound pressure reflection cover is disposed at a position corresponding to the entire circumference of the horn in a front view.   3. The horn mounting structure according to claim 1, wherein the sound pressure reflection cover is also disposed behind the horn.   The horn mounting structure according to any one of claims 1 to 3, wherein a distance between a front surface of the horn and a rear surface of the front grill is 8 to 30 mm.   5. The horn mounting structure according to claim 1, wherein the horn mounting structure has a horn opening ratio of 35% or less, which is a ratio of an area of the horn exposed from the grill opening in a front view. Horn mounting structure.

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