JP2001287588A - Fitting structure of horn for vehicle - Google Patents

Abstract

(57) [Problem] To mount a vehicle horn (H) without a stay and without a shield, so that it does not hinder the inflow of cooling air as in the case of mounting on a front grille (F). To SOLUTION: A flange portion 1e of a horn H is attached to a bumper B located below a front grille F by a mounting portion 10 provided.
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Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a vehicle horn mounting structure.

[0002]

2. Description of the Related Art Generally, a horn for a vehicle is often mounted on a space between an engine room and a bumper mounted in front of the engine room via a stay.
In such a case, a bumper is present in front of the horn as an obstacle that blocks sound emitted from the horn, resulting in a decrease in sound pressure. For this reason, conventionally, in order to satisfy the sound pressure standard at a predetermined position in front of the vehicle body, it is necessary to find and set the horn mounting position, which is not only troublesome and complicated, but also requires a large number of parts for mounting the stay. There's a problem.

[0003]

SUMMARY OF THE INVENTION
As disclosed in Japanese Patent Publication No. 3238, a horn having a versatile flat horn is attached to a front grill having an opening. However, in this case, the mounting area of the horn reduces the opening area of the front grill, and as a result, there is a problem that the inflow of the cooling air is hindered and the cooling of the radiator and the condenser is hindered. Further, when the flange portion of the horn case body to which the peripheral portion of the diaphragm is fixed is directly fixed (fixed) with an annular stopper member, the vibration of the diaphragm is inevitably attenuated, and the flange portion is wrapped with a cushion member. The cushion member is fastened by an annular stopper member. As a result, not only is the number of parts increased, the assembling is troublesome, but also the horn cannot be stably supported due to the interposition of the cushion material.
On the other hand, as installation without the stay, 4-9
As disclosed in Japanese Patent Publication No. 227, there is a type in which a spiral sound tube is attached to the back surface of a bumper such that a sound emission opening faces downward so that there is no shield in front of the sound emission opening. However, this type can only be used for a special type of spiral horn, and when installing the sound tube on the back of the bumper, the sound tube must be tightly closed to the bumper to prevent sound leakage. However, this requires not only accurate positioning of the back of the bumper and the acoustic tube, but also requires careful installation work, resulting in poor workability. There are issues to be addressed.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve these problems in view of the above situation, and is formed in a case opening of a horn.
An installation structure for a vehicle horn, wherein an opening is formed in a front bumper of a vehicle when the flange to which a peripheral portion of the diaphragm is fixed is attached to the vehicle, and the flange is attached to the opening. And by doing this, a versatile flat horn can be attached to the opening in the bumper, so that it can be installed on the front grill without obstructing the flow of cooling air and without using a stay Can be. In this case, the flange portion can be characterized in that it is attached to the bumper opening by a plurality of attachment portions arranged at intervals, and in this case, the horn is attached without using a stay. However, since the entire flange is not attached, the vibration attenuation of the diaphragm can be suppressed. Further, in this device, the intervals between the mounting portions can be characterized by being equal intervals. In such a case, the mounting position and strength are balanced, so that the horn can be stably mounted, Stabilization can be measured.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a first embodiment of the present invention will be described with reference to FIGS. In the drawing, 1
Is a cylindrical case body with a bottom constituting a flat horn for a vehicle, wherein the case body 1 has a small-diameter small-diameter tube portion 1b located on the bottom surface portion 1a side and a step portion formed from the small-diameter cylindrical portion 1b. The large-diameter large-diameter cylindrical portion 1d is integrally formed concentrically with the large-diameter large-diameter cylindrical portion 1d via the state 1c. Further, a flange 1e is formed on the peripheral edge of the large-diameter cylindrical portion 1d, and the flange 1e is formed on the outer diameter side, and the peripheral edge 2a of the diaphragm 2 that covers the opening edge is crimped and fixed. . The base end of the fixed iron core 3 is screwed to the bottom 1a of the case body 1 via a fixing nut 3a in a state of being concentric with the case body 1, but the distal end of the fixed iron core 3 has a bottom part. 1a, and protrudes so as to face the movable iron core 4 with an air gap G therebetween. A coil bobbin 5 fixed to the case body bottom portion 1a and housed in the small-diameter cylindrical portion 1b is externally fitted to the fixed iron core 3. The coil bobbin 5 is wound with an exciting coil 6. ing.

[0006] On the other hand, the movable iron core 4 is formed of a base end 4a provided integrally with the center of the diaphragm 2 and a front end 4c via a step 4b. The tip 4c of the movable core 4 is opposed to the fixed core 3 with the air gap G as described above. Further, the base end of the fixed contact 7 and the movable contact 8 are respectively supported by the case body 1, but the distal end of the contact plate 8 a of the movable contact 8 is pushed down by the step 4 b of the movable iron core 4. This is set so that the circuit is turned off by separating from the fixed contact 7. The fixed contact 7 and the movable contact 8 are wired and connected to an external power supply (not shown) and the exciting coil 6, respectively.
Based on the (contact-separation) switching, the exciting coil 6 is switched to the energized / de-energized state, and accordingly, the fixed iron core 3 is set to be in the magnetized-demagnetized state. Thus, a vehicle horn H is configured. In addition, 9
Is a resonance plate, and 9a is a gasket.

Next, the horn H for a vehicle constructed as described above.
Will be described with reference to a mounting structure to a bumper B provided in a front part of an engine room of a vehicle. Front (front) bumper B
Is disposed below the front grille F. The bumper B is formed using a resin material, and a horn mounting portion 10 including a fin 10a is opened in a frame shape.
Here, the horns H are respectively attached (note that the number of the attached horns H need not be two, but may be one). Since the mounting structure of the left and right horn mounting portions 10 is the same, one mounting structure will be described below. In other words, in the present embodiment, the horn mounting portion 10 is a cylindrical frame 11 formed by folding back the bumper B, and a locking claw 11a forcibly fitting and locking the flange portion 1e is provided at the rear end of the bending. Is formed. In the present embodiment, the locking claws 11a are formed so as to be spaced apart at an equal angle of 60 degrees so that six locking claws 11a are spaced apart. Further, the locking claw 11a has a tapered surface 11b formed so as to have a larger diameter toward the entrance side (rear side), and a notch 11c is formed so that the locking claw 11a is easily elastically deformed. Care has been taken to make it easy to incorporate. In this case, the locking of the flange portion 1e by the locking claw 11a is performed by being forcibly fitted and supported in the locking groove 11f formed at the inclined upper end of the locking claw 11a. Are separated from each other with a gap behind the cylindrical frame end face 11e.

[0008] In the apparatus constructed as described above, the horn H is attached to the bumper B by supporting the flange portion 1e with substantially no shield in front while being flat. As a result, unlike the conventional case in which the cooling wind is attached to the front grille F, the cooling air is not taken in from the front grille F and the cooling effect is not reduced. Further, the stay is not required and the sound pressure is reduced. Although the attachment can be suppressed, as a specific attachment structure, a plurality of (six in the present embodiment) members arranged at intervals without fixing the entire flange portion 1e in an annular shape. Since the attachment is performed with the pawls 11a, the attachment can be performed so as to reduce the vibration attenuation of the diaphragm 2 without using a cushion material. Making it possible to direct attachment you waste, stable mounting of the horn H is Oseru. The locking claws 11a for mounting the horn H are arranged at equal intervals (equal angles), so that not only can the balance be mounted and the mounting strength can be stabilized, but also the horn can be stabilized. Stabilization of the sound emitted from H can also be measured. In addition, in this case, the fin 10a is provided in front of the horn mounting portion 10 opened in the bumper B, and the horn H is protected, which is convenient.

It should be noted that the present invention is not limited to the above-described embodiment, and the second embodiment shown in FIG.
The third embodiment shown in FIG. First, in the second embodiment, the fixing portion 11g is formed by changing the fixing of the flange portion 1e to the locking claw 11a formed in advance and melting the same by heat or the like to deform the frame 11. It was done. In the third embodiment, a bellows-shaped mounting member 12 is mounted via a locking claw 12a. In this case, the mounting member 12
The fixing hole 1 formed in the frame body 11 is attached to the frame body 11.
The locking is performed by locking the locking claw 12b at 1h.

[Brief description of the drawings]

FIG. 1 is a sectional view of a horn.

FIG. 2 is a side cross-sectional view of a front grille showing the first embodiment.

3A is a cross-sectional side view showing a horn mounted state, and FIG. 3B is a rear view showing a horn mounted state.

FIG. 4 is an enlarged sectional side view showing a horn mounted state.

FIG. 5 is a sectional side view showing a horn mounted state according to the second embodiment.

FIG. 6 is a sectional side view showing a horn mounted state according to the third embodiment.

FIG. 7 is a side view showing a state before the horn is attached.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case main body 1e Flange part 2 Diaphragm 10 Horn attachment part 11 Frame 11a Locking claw B Bumper

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toru Hagi 1-4-1, Chuo, Wako-shi, Saitama Pref. Honda Technology Laboratory Co., Ltd. (72) Inventor Kiyofumi Nakayama 1-26, Hirosawacho, Kiryu-shi, Gunma Hachibanchi Mitsuba Co., Ltd. Address Mitsuba Co., Ltd.

Claims (3)

[Claims] In mounting a flange portion formed in a case opening of a horn and fixing a peripheral portion of a diaphragm to a vehicle, an opening is formed in a front bumper of the vehicle, and the flange portion is mounted in the opening. Vehicle horn mounting structure characterized by the following. 2. The vehicle horn mounting structure according to claim 1, wherein the flange portion is mounted on the bumper opening by a plurality of mounting portions arranged at intervals. 3. The vehicle horn mounting structure according to claim 2, wherein the intervals between the mounting portions are equal.