JP2010041386A - Convex type cone - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cone in which improvement of a degree of spreading, reduction or removal of cross-modulation and improvement of conversion efficiency are attained. <P>SOLUTION: The shape of the cone is made into the convex shape from a bell-shaped concave cone. Since the convex cone generates vibration outward, sound of all the frequencies are spread close to natural propagation, widely and in average. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

      The present invention relates to a device for converting electrical vibration using a cone into physical vibration and transmitting the same to the outside, for example, a cone such as a cone speaker.

As an easy-to-understand example of an audible frequency converter, a corn speaker is an example of a morning glory concave corn speaker audio converter that has been used so far.
1. Directivity distortion that the directivity becomes narrower as the frequency increases. The higher the frequency, the lower the generation efficiency.
2. The connection part divided into high and low for efficiency of high and low frequency reproduction has a defect of phase distortion.
3. Since this occurs at the center of a conventional concave cone, the regenerative waveforms of each other have been distorted along with their strength. This is called cross modulation distortion.
These three phenomena were the disadvantages of the concave cone so far.

In order to improve the performance of the title as an improvement measure, it was necessary to use a convex cone. .

The problem to be solved is a conventional electric voice frequency generator for the outside world. For example, a conventional morning glory concave cone speaker is
1. The spread of pronunciation was concentrated at the center as the frequency gradually increased, and inevitably diffused. Therefore, there was a drawback that it did not spread evenly on the front.
2.In order to improve the efficiency of frequency reproduction, when separated into two large and small cones, the reproduced waveforms near the switching contact point, and both cones are concentric, concentric, and close to avoid phase distortion. I made it.
3.Because it is concave so far, if it is strongly generated in the center of the cone, the mixing volume is narrow, so the waveform is affected and it becomes deformed and turbid, so the sound diffusion area angle is made wide and convex to avoid this effect I want it to spread widely and to reduce deformation turbidity significantly.

      The present invention improves this drawback by making the conventional cone shape and the morning glory concave cone convex. For example, in the conventional concave cone generator speaker, we realized the disadvantage that each frequency could not be spread evenly, and the higher the reproduction frequency, the sharper the directivity due to its form, and the reproduction In order to improve the shortcomings of the generation of sound intermodulation distortion, the necessity of changing the shape of the cone has been required.

Since this convex cone vibrates outward, the sound of all frequencies is close to natural propagation and spreads widely on the average. In addition, in the case of strong sound generation, the sound waveform does not mix excessively from the shape of the sounding body, and it can no longer be deformed and distorted. Therefore, the correct waveform can be generated.
In order to eliminate conventional corn from the degree of diffusion and the damage of intermodulation, it was inevitably decided to be the current form as a result of a fundamental re-examination.
Other examples

Although FIG. 1 is a cross-sectional view of an embodiment of the present invention device, a speaker will be described as an example for easy understanding.
FIG. Fig. 1b is a cross-sectional view and cone of the device of the present invention. Is equipped with a high-frequency cone attachment, and the high frequency is fast and fine, so the mass of the cone is high. In order to prevent the conversion efficiency from being reduced by reducing the mass of this cone and reducing the size and weight, the two cones for the natural connection of the same phase in the waveform are also used. It is sectional drawing divided and installed in the same surface.
FIG. 2 is a plan view.
FIG. 3 is a side view.
In the present invention, as a measure for improving the conventional speaker cone of the sound generator, the diffusion range of the speaker is expanded by changing the conventional morning glory concave cone to a convex shape (mountain shape). In addition, the simultaneous reproduction of strong and weak sound from the speaker so far does not become turbid in a narrow space even if the sound is particularly strong, so the output is not turbid and this defect can be improved. In devices that convert electrical vibrations into physical vibrations to the outside world, it improves the sound generation characteristics of all transmission devices of this style, such as the generation of ultrasonic waves that exceed the audible frequency than the audio frequency, and the generation of higher frequencies. is there.

      This form, which can prevent the conventional cone from naturally spreading from the diffusivity and the cross modulation from the collapse of the sound wave waveform from the generator, is the best form.

FIG. Fig. 1 is a drawing of one embodiment of the device of the present invention, which is a single cone of all generated frequencies.

Figure 1b. Is a concentric cone-and-small cone separation type with low distortion of both frequency waveforms for low frequency, high frequency, two separation type high frequency high efficiency.

It is a highly efficient generator that is easily attached to the box.

a. is a cross-sectional view of the device of the present invention and a cone b. With high frequency cone attachment It is a top view. It is a side view.

Explanation of symbols

1． a. Single cone for generation of all frequencies.
b. Double core with a small cone to increase high frequency efficiency
N
2 .. Magnet for generating electrical signals into physical signals
3. Vibration coil for generating physical signals
4. Input point for sending electrical signal to generating coil
5. A damper that supports the physical vibration of the generator coil
6. Efficiently supports the signal transmitted from the generated coil signal without side-to-side movement of the cone
A flexible edge to prevent vibration loss

Claims (1)

          Improves the generation characteristics of all transmission devices of this style, such as the generation of ultrasonic and higher frequencies beyond the audible wave in devices that convert electrical vibrations into physical vibrations to the outside world. Is.