JPH11143475A - Horn - Google Patents

Abstract

PROBLEM TO BE SOLVED: To freely regulate the turning between a vibration generating unit and a resonator in assembling the vibration generating unit and a resonator unit with which a clamp for fitting to a body is integrated. SOLUTION: In a sealing material 11 to seal a sound outlet 6b formed in a cover body 6 of a vibration generating unit 2 and a sound inlet 10b formed in a base body 10 of a resonator unit 7, a cover body side 11a is adhered to the cover body 6, and a base body side is slidably abutted on the base body 10 so that the resonator unit 7 is turnably regulated relative to the vibration generating unit 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention belongs to the technical field of a horn mounted on a vehicle or the like.

[0002]

2. Description of the Related Art In general, a horn of this type is provided with a case body provided with a stay for mounting a frame and integrally provided with a vibration generating portion, and a diaphragm mounted on the case body in a state of covering the opening of the case body. A cover body facing the outer surface of the diaphragm and having a sound output opening, a frame having an open sound path bottom surface, and a base body covering the sound path bottom surface and having a sound entrance opening formed therein. In such a case, the sound output port of the cover body and the sound input port of the base body are integrally incorporated so as to be sealed.

[0003]

When this is mounted on a frame, the frame is mounted via a frame mounting clamp. The clamp is integrally protruded from the case body in the outer diameter direction. The projecting end is fixed to the frame on the skeleton side by means such as screwing. On the other hand, the horn is preferably attached to the skeleton side bracket in a state in which the sound-generating portion formed in the frame as a trumpet faces downward in order to prevent rainwater or the like from entering the frame. Brackets are not uniform depending on the vehicle type, so the frame side bracket and the projection direction of the clamp do not match well,
There is a problem that the sounding part may be turned sideways, and in order to avoid this, there is a problem that a plurality of specifications of horns having clamps with various protruding directions must be prepared. There was a problem to be solved.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has been created for the purpose of solving these problems, in which a stay for mounting a frame is integrally provided, A case body provided with the vibration generating section, a diaphragm attached to the case body in a state of covering the case body opening, a cover body facing the outer surface of the diaphragm and having a sound output port formed, and a sound path bottom opening; In forming a horn comprising a frame having a cover and a base body covering the sound path bottom surface and having a sound inlet formed therein, the cover body and the base body are assembled so as to be freely rotatable. It is assumed that. By doing so, the positional relationship between the clamp on the cover body side and the sounding section on the base body side can be freely changed.

[0005]

Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a horn mounted on a vehicle or the like, and a vibration generating unit 2 constituting the horn 1 is housed in a case body 3. The case body 3 is formed in a bottomed cylindrical shape. A vibration generating unit 4 is provided inside the unit 3a. The vibration generating section 4 is composed of members such as a coil 4a, a moving plate 4b, and a point 4c. On the other hand, reference numeral 5 denotes a diaphragm provided so as to close the opening of the case body 2, and the diaphragm 5 is connected with the moving plate 4b of the vibration generating unit 4 in an interlocking manner.
It is set to vibrate as the vibration generating section 4 vibrates, and this constitutes a horn body. Further, a cover body 6 is provided on the outer surface of the diaphragm 5 and is set so that an air vibration chamber is formed in the case body 3, whereby the vibration generating unit 1 is configured.

The cover body 6 is formed in a funnel shape, and a sound output port for discharging a sound generated by the vibration of the diaphragm 5 to a later-described resonator unit 7 is provided at a central portion of the slightly inclined bottom surface 6a. 6b has been established. The outer peripheral edge portion 6c of the cover body 6 is caulked while sandwiching the outer peripheral edge portion 5a of the diaphragm 5 and the flange portion 3b formed at the cylindrical end of the case body 3. It is set so that the outer peripheral edge of the case 6 and the case body 3 is sealed. Further, a rim portion 6d protruding outward is formed at a peripheral portion of the sound output opening 6b. Reference numeral 8 denotes a clamp fixed to the bottom surface 3c of the case body 3 using screws 3d. The horn 1 is fixed to the bracket 8 on the frame side (not shown) by a fixing means such as a screw. It is set so that it can be attached to the frame.

On the other hand, the resonator unit 7 resonates the vibration sound of the diaphragm 5 generated by the vibration generation unit 2 and emits the sound to the outside. The sound path wall 9a is formed to form a spiral sound path. The frame 9 has a sound path bottom surface and an opening, and a base body 10 fixed to the bottom surface of the frame 9. The base body 10 is formed in a cylindrical shape with a bottom, and the bottom surface 10a is set so as to seal the sound path bottom surface where the frame 9 is opened in a sealed (airtight) manner. Here, the frame 9 and the base body 10 are
It is molded from a resin material of the same quality and is integrally fixed by, for example, ultrasonic welding, so that the adhesive material does not protrude and a sound path with excellent airtightness is formed.

Further, on the bottom surface 10a of the base body 10,
A sound inlet 10b communicating with the cover sound outlet 6b and receiving sound from the vibration generating unit 1 side is opened at a central portion, and an annular stepped portion 10c is formed at a periphery of the sound inlet 10b. Further, an annular fitting groove 10d for fitting a sealing material (airtight material) 11, which will be described later, is formed on the outer peripheral side of the step portion 10c. On the other hand, the outer peripheral edge portion 6c of the cover body is rotatably (slidably) internally fitted to the cylindrical portion 10e of the base body 10. That is, the protrusion 10f is formed at a plurality of circumferential positions on the inner peripheral surface of the cylindrical portion 10e,
The outer peripheral edge portion 6c of the cover body is set so as to be fitted inside by press-fitting and pushing into the cylindrical portion 10e so as to elastically deform the projections 10f in an expanded manner. The unit 2 is set so as to be fitted and assembled in a retaining shape. In this fitting state, the cover body rim portion 6d is set to abut against the base body step portion 10c in this state, and in this state, the inclined peripheral portion of the cover body sound opening 6b and the base A gap is formed between the body entrance opening 10b and the peripheral edge. Reference numeral 9b denotes a sound generator of the frame 9, and the sound generator 9b constitutes a sound path continuing from the sound inlet 10b.

An annular sealing material 11 formed to correspond to the shape of the gap is interposed in the gap. That is, the surface portion 11a on the cover body 6 side forming the sealing material 11 is formed with a slight inclined surface corresponding to the cover body 6, and the surface portion 11b on the base body 10 side is formed with a step portion 10c.
A first projection 11c corresponding to the gap formed by the ridges 6d and the second projection 11d corresponding to the fitting groove 10d are formed. The sealing member 11 is integrally fixed to the cover member 6 by a fixing means such as an adhesive between the cover member 6 and the cover member side surface portion 11a of the sealing member 11. The vibration generating unit 2 is incorporated in the resonator unit 7 in a state where the vibration generating unit 2 is slidably in contact with the body side surface portion 11b.
The resonator unit 7 is set to be freely rotatable with respect to the vibration generating unit 2 about the sound output port 6b and the sound input port 10b. Furthermore, the sealing material 1 of the present embodiment
1 is formed to be slightly thicker than the gap, and when the cover outer peripheral edge 6c is fitted in the base body cylinder 10e, the sealing material 11 is in contact with the cover body sound opening 6b peripheral edge. The sound input opening 10b is set so as to lightly suppress the peripheral edge of the sound input opening 10b, so that the sealing function between the sound output opening 6b and the sound input opening 10b is further enhanced. Here, the light elastic pressure of the sealing material 11 is caused by the rotation (sliding) between the vibration generating unit 2 and the resonator unit 7.
It is needless to say that is not to be impaired.

In the embodiment of the present invention configured as described above, the horn is assembled by incorporating the vibration generating unit 2 and the resonator unit 7 in a state where the outer peripheral edge portion 6c of the cover body is fitted inside the base cylindrical portion 10e. 1 can be formed. In this case, the vibration generating unit 2 and the resonator unit 7 can inspect the quality of the product and the defect in a single state, thereby increasing the product yield and reducing the cost. Can be measured. Moreover, in this case, since the resonator unit 7 is slidable with respect to the sealing material 11 that seals the space between the vibration generating unit 2 and the resonator unit 7, resonance occurs in the assembled state. By adjusting the rotation of the resonator unit 7, the direction in which the clamp 8 fixed to the vibration generating unit 2 with respect to the direction of the sound generator 9b of the frame 9 of the resonator unit 7 can be freely changed. As a result, the arrangement position of the skeleton side bracket which differs depending on the vehicle does not match well with the projecting direction of the clamp 8, and there is no problem that the sound source must be attached with the sounding part facing sideways. It can correspond to various vehicles.

Further, in this case, the sealing material 11 is adhered to the vibration generating unit 2 side so as to be slidable between the resonator unit 7. Is a ring-shaped stepped portion 10 on the periphery of the sound entrance 10b.
c and the fitting groove 10 d are formed, and the sealing member 11 is formed with the first and second protrusions 11 c and 11 d corresponding thereto, so that the resonator unit 7 includes the first and second protrusions. Part 11
There is an advantage that it can be rotated while being guided by c and 11d.

The present invention is, of course, not limited to the above-described embodiment, and since the sealing material is for preventing sound from leaking and lowering the volume, the case body and the base body are relatively opposed to each other. Although it is not always necessary to adjust the rotation, it is needless to say that a horn is preferable. And when providing a sealing material, it is not limited to comprising between a sealing material and a base body so that it can slide freely like the said embodiment, It is needless to say that the slidable structure or the slidable structure with respect to both may be employed. Also, the shape of the sealing material is not as described in the above-described embodiment, and does not seal over a wide range of the peripheral portion of the sound inlet, but as in the second embodiment shown in FIG. A ring-shaped sealing material 12 such as an O-ring and a sheet-shaped ring-shaped sealing material 13 as in the third embodiment shown in FIG. 4B may be used. Also, it is only necessary to be configured so as to slidably abut on at least one of the cover body 6 and the base body 10 while sealing between the output / sound inlets 6b and 10b.

[Brief description of the drawings]

FIG. 1 is a sectional view of a horn.

FIG. 2 is an enlarged sectional view of a main part.

FIG. 3 is a plan view illustrating the invention.

FIGS. 4A and 4B are enlarged sectional views showing a second embodiment and a third embodiment, respectively.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Horn 2 Vibration generating unit 3 Case body 4 Vibration generating part 5 Diaphragm 6 Cover body 7 Resonator unit 8 Clamp 9 Frame 10 Base body 11 Sealing material

Claims (1)

[Claims] 1. A case in which a stay for attaching a frame is integrally provided, a case body provided with a vibration generating section, a diaphragm attached to the case body in a state of covering the case body opening, and an outer surface of the diaphragm facing the case body. A horn including a cover body in which a sound output port is formed, a frame in which a sound path bottom face is opened, and a base body that covers the sound path bottom face and in which a sound entrance port is formed. A horn characterized in that a body and a base body are assembled to be freely rotatable.