JP3327014B2 - Speaker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a loudspeaker which is mainly attached to a car door and used for waterproofing.

[0002]

2. Description of the Related Art A conventional speaker of this type will be described with reference to the accompanying drawings.

FIG. 6 is an exploded perspective view showing the structure of a conventional speaker used for a vehicle (for door mounting). In FIG.
The spacer 2 is configured to have an arc-shaped standing wall on the upper side in a mounted state. Reference numeral 3 denotes an adhesive used for connecting the spacer 2 to the speaker unit 1, and reference numeral 4 denotes a sealing cushion attached to the back surface of the spacer 2, and these components are assembled to constitute a speaker.

[0004] An attached state of a conventional speaker having such a configuration will be described with reference to FIGS. 7 (a) and 7 (b).

FIG. 7A shows a state in which a speaker is attached to a left door, and FIG. 7B shows a state in which the speaker is attached to the right door. In FIG. Vehicle right side door for mounting 5, 7
Is a speaker to which a spacer is attached, and 8 is a vehicle left door to which the speaker 7 is attached. The conventional loudspeakers 5 and 7 configured as described above are configured such that the arc-shaped upright wall is positioned upward when viewed from the mounting direction and the drainage cutouts 5a and 7a of the frame are positioned downward. Even if rainwater or the like enters the door and falls on the speakers 5 and 7, the arc-shaped upright wall prevents rainwater or the like from being directly applied to the speakers 5 and 7, especially the vibration system members. Play a role, speakers 5,7
It was configured to improve the waterproof resistance of the device.

[0006]

However, in the above-mentioned conventional configuration, although the speakers 5 and 7 have a water-proof effect against water falling down from above, the water-proof effect against water rising from below is low. And speaker unit 1
The spacer 2 having the arc-shaped standing wall on the back of the
Processing costs are incurred.

[0007] In addition, in the case of a vehicle-mounted door speaker with many mounting restrictions, the left speaker 7 and the right speaker 5 are often symmetrical in shape, and the spacer 2 is exclusively used for the right door. On the other hand, a symmetrical spacer is set and the left exclusive speaker 7 is attached to the left door 8, but the speakers 5 and 7 having substantially the same structure must be separately set on the left and right sides. It took extra time, which was uneconomical.

An object of the present invention is to solve the above-mentioned conventional problems and to provide a speaker having a structure excellent in waterproof performance at low cost.

[0009]

In order to solve the above-mentioned problems, a speaker according to the present invention comprises a magnetic circuit having a magnetic gap formed therein and an arc-shaped standing wall provided on at least an upper part and a lower part on a back side in a mounted state. A frame coupled to an upper surface of the magnetic circuit and a diaphragm coupled to a voice coil that fits in the magnetic gap and having an outer peripheral portion coupled to a peripheral edge of the frame.

[0010]

With this structure, the arc-shaped upright wall is integrally formed on the back side of the frame in the mounted state, so that the work of mounting the spacer with the upright wall by post-processing can be eliminated, and the work can be rationalized. Also,
By installing the arc-shaped upright wall at the upper and lower portions, one speaker can be used for both the left and right doors of the vehicle, thereby reducing the amount of die investment and the number of parts.

[0011]

【Example】

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an exploded perspective view of a loudspeaker according to the embodiment, in which arc-shaped standing walls 10a and 10b integrally formed on the back side of a frame portion of a loudspeaker unit 9 are provided.
A cushion 11 for waterproofly sealing the gap between the mounting member (vehicle door) and the sealing surface is attached to the rear side of the frame portion. With this configuration, the frame and the arc-shaped standing walls 10a and 10b are integrated. It can be seen that post-processing does not occur because of molding.

FIGS. 2 (a) and 2 (b) are a perspective view and a sectional view of a main part showing a state where the speaker of FIG. 1 is mounted on a door of a vehicle. The loudspeaker 12 according to the present embodiment can be mounted on either the left or right door due to its vertically symmetrical shape.

(Embodiment 2) Hereinafter, a second embodiment of the present invention will be described with reference to the drawings.

FIG. 3 is an exploded perspective view showing the loudspeaker according to the embodiment, in which 16 is a loudspeaker unit, and an arc-shaped standing wall 17 is provided on the back side of the frame of the loudspeaker unit 16. And its standing wall 17
Are formed with concave portions 18a and 18b protruding in the center direction, and a cushion 19 for waterproofly sealing a gap with a sealing surface of an object to be mounted (vehicle door) is attached to the rear side of the frame portion. .

FIG. 4A is a perspective view mainly showing an upright wall 17 and recesses 18a and 18b provided on the back side of the speaker unit 16, and FIG. 4B is a view from the direction of arrow A in FIG. FIG. 5 is a view as viewed from the direction of the arrow A, wherein the recesses 18a and 18b are provided so as to be respectively disposed at an upper portion and a lower portion in a mounted state, and a groove 20a extending in the front-rear direction of the speaker unit 16 is provided on the outer peripheral tangent of the recesses 18a and 18b , 20b respectively, water 22 etc., which have entered the inner periphery of the standing wall 17 on the circular arc attached to the back surface of the speaker unit 16, are provided in the recesses 18a, 18b with holes 21 extending in the front-rear direction of the speaker. It flows down in the direction of arrow 23 in the figure through the grooves 20a and 20b.

The water 24 flowing down from the upper side of the arc-shaped upright wall 17 with respect to the mounting direction is subjected to the recesses 18a, 18a.
b by the blocking wall 25 at the bottom of the speaker unit 16.
As a result, it flows down to the rear side without entering the vibration system side, and an excellent waterproof structure can be provided.

FIG. 5 is a sectional view of the loudspeaker according to the present embodiment taken along a concave portion.

[0019]

As described above, in the speaker according to the present invention, the frame and the arc-shaped upright wall formed on the rear surface thereof are integrally formed, and the speaker assembly process is rationalized.
Since it has a symmetrical shape that can be shared by the left and right, the number of product models can be reduced, and high reliability against water and the like is ensured such that water or the like is less likely to enter and the entered water is easy to escape.

It should be noted that the present invention can provide a highly reliable speaker that can effectively exhibit space efficiency particularly in an in-vehicle door speaker or the like in which mounting conditions are restricted.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a configuration of a speaker according to a first embodiment of the present invention.

FIG. 2A is a perspective view showing a use state according to the embodiment; FIG.

FIG. 3 is an exploded perspective view showing a configuration of a speaker according to a second embodiment of the present invention.

FIG. 4A is a perspective view showing the back surface side of the frame according to the embodiment. FIG.

FIG. 5 is a sectional view of the speaker according to the embodiment.

FIG. 6 is an exploded perspective view showing a configuration of a conventional speaker.

FIG. 7 is a perspective view showing a use state of a conventional speaker.

[Explanation of symbols]

 Reference Signs List 9 speaker unit 10a, 10b standing wall 11 sealing cushion 12 speaker 13 vehicle door 14 sealing cushion 16 speaker unit 17 standing wall 18a, 18b recess 19 sealing cushion 20a, 20b groove 21a, 21b hole 22, 23, 24 water path 25 Blocking Wall

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04R 9/02 101 B60R 11/02 H04R 1/00 311 H04R 1/02 102

Claims (3)

(57) [Claims] 1. A magnetic circuit having a magnetic gap formed therein, a frame provided with arc-shaped standing walls at least on an upper part and a lower part on a back side in a mounted state and coupled to an upper surface of the magnetic circuit, and a frame fitted into the magnetic gap. A speaker comprising a diaphragm coupled to a voice coil to be inserted into the center and having an outer peripheral portion coupled to a peripheral edge of the frame. 2. An arc-shaped standing wall is provided with a concave portion protruding in the center direction in a part thereof, and a groove portion extending in the front-rear direction of the speaker is provided on an inner peripheral surface side of the arc-shaped standing wall in a portion where the concave portion is provided. The speaker according to claim 1. 3. The loudspeaker according to claim 1, wherein a groove portion of the loudspeaker in the front-rear direction has an angle such that a cross-sectional area is larger on a back side than on a front side of the loudspeaker.