JPH06327078A - Thin box speaker - Google Patents

Abstract

PURPOSE:To reduce the degradation of the performance of a speaker and to thin the thickness of a speaker box by providing a speaker field part on the outer side of the speaker box. CONSTITUTION:The speaker field part 5 is provided on the outer side of the speaker box 2. The reason for doing this is that the performance is not degraded even when the speaker field part 5 is at the outer side of the speaker box 2 when air on the surface side of a diaphragm 3 and the air on a back side are shut off by the speaker box 2 in a thin box speaker. Thus, a speaker box projected part 2a which was present at the back surface of the speaker field part 5 before is unnecessitated. Also, by providing the speaker filed part 5 on the outer side of the speaker box 2, the need of forcibly thinning a speaker frame 4 and the speaker field part 5 as before is reduced and the degradation of the performance can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin box speaker mounted on a vehicle, and in particular, the present invention makes the speaker as thin as possible in order to improve the design, entry / exitability and habitability of the vehicle without deteriorating the performance of the speaker. Regarding what to do.

[0002]

2. Description of the Related Art Conventionally, there are techniques described in the following fields. FIG. 4 is a sectional view showing a conventional thin box speaker. As shown in FIG. 1A, the thin box speaker includes a speaker unit 1 and a speaker box 2 surrounding the back surface of the speaker unit 1. The speaker unit 1 includes a diaphragm 3 for outputting sound, and a speaker frame 4 supporting the diaphragm 3 and the like.
And a speaker field unit 5 for driving the diaphragm 3. The speaker box 2 is necessary in order to prevent the sound emitted from the front surface of the diaphragm 3 from interfering with the sound emitted from the rear surface thereof and preventing the sound emitted from the front surface from disappearing. When a speaker is mounted on a vehicle, the speaker is made thinner in order to improve the vehicle design, ease of getting on and off, and comfort. That is, if the speaker frame 4 and the speaker field portion 5 are made thin, the performance of the speaker deteriorates. Therefore, as shown in FIG. 1B, the speaker box 2 near the speaker field portion 5 is shaped along the shape of the speaker unit 1. The speaker box 2 as a whole is thinned with only the convex portion 2a.

[0003]

However, when it becomes necessary to further reduce the thickness of the speaker box 2, the reduction of the thickness has already reached its limit. There has been a problem that the magnetic portion 5 has to be made thin, which deteriorates the performance.

Therefore, in view of the above problems, it is an object of the present invention to provide a thin box speaker in which the deterioration of the speaker performance can be minimized and the thickness of the speaker box 2 can be minimized.

[0005]

In order to solve the above problems, the present invention is a thin type having a speaker box which surrounds a back surface of a diaphragm and has a thin thickness, and a speaker field portion which drives the diaphragm. In the box speaker, the speaker field portion is provided outside the speaker box. Further, a speaker unit including at least the diaphragm and the speaker field unit is clamped and clamped by a speaker box that divides the speaker box. Further, the partial space of the speaker box is enlarged according to the size of the space in which it is installed.

[0006]

According to the thin box speaker of the present invention, by providing the speaker field portion outside the speaker box, the speaker field portion is not surrounded by the speaker box, so that the thickness of the speaker box is larger than that of the case. It is possible to make it thinner by the amount of time, which is why the vehicle design
The habitability can be improved. It is very effective when installed in a narrow space such as a vehicle door. Even if the speaker field portion is placed outside the speaker box in this way, the air on the front side and the air on the back side of the diaphragm are blocked by the speaker box, so that the performance does not deteriorate. Further, the speaker unit including at least the diaphragm and the speaker field unit is clamped and clamped by the speaker box that divides the speaker box into two parts, which facilitates the assembly. In addition, the speaker performance can be improved by increasing the partial space of the speaker box according to the size of the space in which the speaker box is installed. In this way, the mountability on the vehicle can be improved.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an example of a thin box speaker according to an embodiment of the present invention. In this figure, the difference from FIG. 4 is that the speaker field unit 5 is outside the speaker box 2. In the thin box speaker, if the air on the front side of the diaphragm 3 and the air on the back side of the diaphragm 3 are blocked by the speaker box 2, the speaker field unit 5 is exposed outside the speaker box 2. This is because the performance does not deteriorate. Therefore, the conventional speaker field unit 5
Speaker box convex portion 2a on the back of the speaker (Fig. 4 (b))
(See) becomes unnecessary. Conventionally, the thickness of the speaker box convex portion 2a is about 3 mm, which is about 7 mm, and the reinforcing material in the shape of cross girder is used for this. In the case of a speaker used by being embedded in a vehicle door, the thickness of about 10 mm increases the possibility of mounting even in a narrow space of the mounting space due to interference with the design of the vehicle and other parts, and thus getting on and off the vehicle. It has a great effect on the improvement of sex and habitability. Further, by placing the speaker field portion 5 outside the speaker box 2, it is not necessary to forcibly make the speaker frame 4 and the speaker field portion 5 thin as in the conventional case, and performance deterioration can be prevented. .

FIG. 2 is a view for explaining the assembly of the thin box speaker shown in FIG. As shown in the figure, the speaker box 2 is attached to the speaker unit 1 by 2A and 2B.
And an opening 21 for fixing the front edge 11 of the frame 27 that holds the diaphragm 3 in the speaker unit 1 is provided in each of the two parts. Porcelain part 5
An opening 22 is provided to secure the rear edge 12 that joins with. The front edge 11 of the frame 27 is provided with a plurality of ears 12 and mounting holes are provided therein. Further speaker box 2
The speaker unit 1 is hermetically sealed 2 in A and 2B.
A plurality of holes 23 are provided at positions corresponding to the holes of the ear portion 12 when sandwiched via 4, and the speaker boxes 2A and 2B and the speaker unit 1 are fixed by speaker mounting screws 25. Further, the speaker boxes 2A and 2B are provided with a plurality of fastening portions 22, and these are fixed to each other by box assembling screws 26. Thus, the thin box speaker can be easily assembled even if the speaker field unit 5 is provided outside the speaker box 2.

FIG. 3 is a side view of a thin box speaker according to an embodiment of the present invention, showing a modification of the speaker box. As shown in the figure, a thin box speaker is installed in a vehicle door by embedding it. The vehicle door has a door outer plate 10 on the outer side and a door inner plate 11 on the inner side.
And the door trim 1 inside the door inner plate 11
2 and a device 13 such as a motor for moving a window glass, which is built in inside the door. Further, a thin box speaker is attached to the door inner plate 11, and a speaker grill 14 is located in front of the speaker unit 1 of the thin box speaker.
The sound is passed through the speaker grill 14 and reproduced in the vehicle.

Normally, the thin box speaker is installed at a position as high as possible at the door in relation to the position of the driver's ears. However, since the motor 13 and the like are also often installed near the upper part of the door, they interfere with them. Therefore, the thin box speaker of the present invention is effective in such a case and can be thinned without deteriorating the performance of the speaker, that is, it is not necessary to thin the speaker frame 4 and the speaker field portion 5 as in the conventional case. Become. For this reason, the design margin of the door of the vehicle is increased without sacrificing the performance of the speaker, which contributes to the improvement of the entry / exitability from the vehicle interior and the habitability in the vehicle interior.

Since there is generally a large space below the door of the vehicle, a space 2C in which the space of the speaker box 2 is partially enlarged may be provided correspondingly. As a result, the diaphragm 3 can be easily moved back and forth, and the performance of the speaker can be further improved.

[0012]

As described above, according to the present invention, the speaker field portion is provided outside the speaker box.
Compared with the case where the speaker field part is surrounded by the speaker box, the thickness of the speaker box can be further reduced, and the vehicle design, the entry / exitability, and the habitability can be improved. Furthermore, by increasing the partial space of the speaker box according to the size of the space in which it is installed,
Speaker performance can be improved. In this way, the mountability on the vehicle can be improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of a thin box speaker according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating an assembly of the thin box speaker of FIG.

FIG. 3 is a side view of a thin box speaker according to an embodiment of the present invention, showing a modification of the speaker box.

FIG. 4 is a sectional view showing a conventional thin box speaker.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Speaker unit 2, 2a, 2A, 2B, 2C ... Speaker box 3 ... Diaphragm 4 ... Speaker frame 5 ... Speaker field part

Claims (3)

[Claims] 1. A thin box speaker having a speaker box (2) surrounding a back surface of a diaphragm (3) and having a thin thickness, and a speaker field unit (5) for driving the diaphragm (3), A thin box speaker, wherein the speaker field part (5) is provided outside the speaker box (2). 2. A speaker box (2) which is a speaker unit (1) comprising at least the diaphragm (3) and a speaker field section (5), which is obtained by dividing the speaker box 2 into two.
The thin box speaker according to claim 1, wherein the thin box speaker is sandwiched and fastened by (A, 2B). 3. The thin box speaker according to claim 1, wherein a partial space of the speaker box (2) is enlarged according to a size of a space in which the speaker box (2) is installed.