KR880003790Y1 - Structure of plane speaker - Google Patents

Abstract

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Description

Structure of flat speaker

1 is a planar speaker structure to which the present invention is applied.

FIG. 2 (a) and FIG. 2 (b) show a planar speaker structure according to the prior art.

Third (a), third (b), third (c), third (d), third (e), third (f), third (g), third 3 (h) is a divided vibration mode state diagram of a flat speaker having a circular diaphragm.

(The dotted line shows the part without vibration due to the supporting structure.)

4 is a mid-range reproduction characteristics of the present invention and the conventional design.

* Explanation of symbols for main parts of the drawings

1: speaker 2: bobbin

3: drive cone 4: central drive

5: diaphragm

The present invention improves the structure of supporting the diaphragm of the speaker in order to pursue the front driving method in which the front surface of the diaphragm drives the vibration state of the diaphragm left and right for the sound quality reproduced in the flat speaker. It is related to the structure of a flat speaker that increases the effect.

In general, various conditions are required to increase the sound quality reproduced by the speaker, but the effect of the vibration plate is greatly dependent on the vibration mode. The most ideal vibration plate vibration mode is the front surface of the diaphragm driving the same phase in the case of a flat vibration plate. The driving method is required, and the factors for determining the vibration mode of the speaker are dependent on the support conditions of the diaphragm and the characteristics and shape of the diaphragm material.

As described above, a speaker structure as shown in FIG. 2 (a) and FIG. 2 (b) is introduced as a conventional speaker structure in relation to the support condition of the diaphragm among various conditions that influence the effect of the reproduction sound quality. In the case of FIG. 2 (a), the savior which supports the diaphragm 5 by using the drive cone 3 for normal light charge in the bobbin 2 located inside the speaker 1, The vibration mode of the diaphragm 5 at the time of regeneration of the vibration plate 5 is a state in which the driving point support state by the drive cone 3 is supporting a wide circumferential point, and has a vibration vibration mode which is not a front driving mode. The pattern of the divided vibration mode is shown in FIG. The divided vibration mode of the circular diaphragm is shown in FIG. 3 (a), 3 (c), 3 (e), 3 (f), 3 (g) and The same main divided vibration mode, while the third (b), the third (d) also has the secondary divided vibration mode as shown in the third (h), which shows the reproduction characteristics as shown in Figure 4 b As a result, the structure of the speaker 1 in which the diaphragm cannot bring the vibration mode driven in the front and the narrow bobbin 2 directly adhered to the diaphragm 5, as shown in FIG. Since the bobbin 2 having the diaphragm 5 is symmetric about the center point with respect to the diaphragm 5, the center of FIG. 3 (b), 3 (d), and 3 (h) is the same. The symmetrical split vibration mode is mainly shown, but the split vibration modes in the radial direction such as the third (a), third (c), third (e), third (f), and third (g) degrees are secondary. 3 (b), 3 (d), and 3 ( When the sound of the frequency corresponding to the divided vibration mode as shown in h) is shown in FIG. 4, the reproduction characteristic diagram as shown in FIG.

In other words, the second speaker (a) of the conventional speaker structure having the same structure as the second (b) also has the divided vibration mode of the diaphragm as described above, and thus the front driving mode which brings about the optimal sound reproduction effect. There was a limit to the expectation of negative parasitic effects due to the support structure of the diaphragm.

Therefore, the present invention was designed in such a manner that the vibration mode of the diaphragm can be approached to the ideal front driving method as much as possible in parallel with the conventional two types of speaker diaphragm support structures, according to the accompanying drawings showing the embodiments thereof. And the effect of the operation will be described in detail as follows.

In the structure of a general flat speaker which is connected between the bobbin 2 and the diaphragm 5 of the speaker 1 through the drive cone 3, the center between the upper circumference of the inner circumference of the bobbin 2 and the center of the diaphragm 5 is provided. Referring to the effect of the present invention is configured as a configuration having a support structure attached to the drive (4) as follows.

As shown in FIG. 1, the support structure of the diaphragm 5 is supported by the support of the diaphragm 5 by the drive cone 3 of the upper and lower narrow shafts and the center of the diaphragm drive 4. 2 (a) also has the effect of suppressing the split vibration mode as shown in FIG. 3 while maximizing the support structure of two conventional diaphragms 5 as shown in FIG. Since the vibration mode brings the state closest to the front driving method, the vibration mode has the state of FIG. 4C which is a flat reproducing characteristic over a fairly wide frequency band of the mid-to-high range. Therefore, by improving the support structure of the diaphragm 5, the regeneration efficiency of sound is increased by minimizing the divided vibration mode that hinders the front driving mode.

Claims (1)

In the flat speaker which is connected between the bobbin 2 of the speaker 1 and the diaphragm 5 through the drive cone 3, the pentagon drive 4 is attached to the inside of the bobbin 2 and the center of the diaphragm 5, Of stylish flat speakers.