CN201781610U - Audio speaker diaphragm device - Google Patents

Abstract

The utility model discloses a diaphragm device for an acoustic speaker, which is provided with a diaphragm support, a voice coil and a diaphragm, wherein the diaphragm support is provided with a through hole at the center, the diaphragm support is provided with an annular groove at the outer periphery of the through hole, the voice coil is sleeved in the through hole of the diaphragm support and the front and rear ends extend out of the front and rear sides of the diaphragm support respectively, the voice coil is provided with a coil wound on the outer surface extending out of the rear side of the diaphragm support, the diaphragm is sleeved inside the front end of the voice coil and is connected with the inside of the voice coil and the through hole of the diaphragm support, the diaphragm is coated with a diamond film layer on the outside, thereby providing an acoustic speaker diaphragm device with good sound quality and capable of reproducing the original sound.

Description

Audio speaker diaphragm device

technical field

The utility model relates to an audio horn diaphragm device, in particular to an audio horn diaphragm device which has good sound quality and can reproduce the original sound.

Background technique

With the rapid development of science and technology, the quality of existing audio speaker devices is becoming more and more refined. The existing audio speaker devices are mainly composed of a speaker, at least one speaker, a frequency divider and related wires and terminals. The speaker can provide an effect of converting electrical energy into mechanical vibration and then disturbing the air to turn it into sound. The existing speaker can mainly be a two-way speaker composed of two treble and woofer units or a three-way unit composed of high, middle and bass units. three-way speaker;

The existing monomer can provide sounds in different ranges and is mainly composed of a suspension device, a magnet set, a voice coil and a diaphragm. The voice coil is set on the magnet set and is electrically connected to the magnet set The coil, and the diaphragm is combined with the suspension device and located inside the voice coil. When the existing speaker is in operation, the current signal mainly enters the voice coil of the monomer, so that the voice coil generates a magnetic field and communicates with the voice coil. The vibration phenomenon of mutual attraction or repulsion occurs between the magnets. This vibration phenomenon will cause the diaphragm to vibrate and push the air in front, and instantly generate a sound wave or airflow with a contraction or expansion rhythm, and then emit a sound that can be heard by the user's ears. Its application The principle is similar to the effect of human beings using throat vibration to produce sound;

However, the sound quality of the sound produced by the existing speaker unit is closely related to the material and characteristics of the diaphragm. Among them, the materials used as the diaphragm can be roughly divided into two categories: soft diaphragm and hard diaphragm. Among them, the soft diaphragm has insufficient rigidity due to its soft texture. The existing soft diaphragm is affected by the sound wave reaction force rebounded from the rear and causes a clapping phenomenon, which will produce another kind of delicate sound. Although it will not produce unpleasant sounds, it will Different from the real sound, some frequencies are prone to distortion. Although the hardness of the hard diaphragm is higher than that of the soft diaphragm, it still cannot effectively express the details of the sound. Therefore, how to Developing a diaphragm with light weight and good hardness is an urgent goal for the industry at present.

Contents of the invention

Therefore, the designer aims at the light weight but poor hardness of the existing audio speaker diaphragm device, which affects the lack and insufficiency of the sound output quality. After continuous research and testing, he finally developed a Improve the existing missing utility models.

The utility model relates to an audio horn diaphragm device, which mainly uses a diaphragm device with light weight and good hardness to provide an audio horn diaphragm device with good sound quality and reproducible original sound.

In order to achieve the above object, the utility model provides an audio horn diaphragm device, which includes a diaphragm support, a voice coil and a diaphragm, wherein:

The diaphragm support is provided with a perforation at the center, and the diaphragm support is provided with an annular groove on the outer periphery of the perforation;

The voice coil is sleeved in the perforation of the diaphragm support and the front and rear ends protrude from the front and rear sides of the diaphragm support respectively, and a coil is wound on the outer surface of the voice coil protruding from the rear side of the diaphragm support ;as well as

The diaphragm is sheathed inside the front end of the voice coil and communicates with the interior of the voice coil and the perforation of the vibrating film support, and the diaphragm is coated with a diamond film layer on the outside.

Further, the membrane is a semicircular membrane body made of titanium, aluminum or magnesium light metal.

Still further, the diaphragm is additionally provided with a sound film fixing frame, which is arranged in the groove on the front side of the diaphragm support and abuts against the outer surface of the voice coil, and the sound film fixing frame is in contact with the voice coil A sound film hanging edge is arranged at the adjacent position.

Preferably, the diaphragm is annularly provided with a ring surface abutting against the inner surface of the voice coil at the rear end.

Preferably, a plurality of connection terminals are convexly formed on the rear side of the diaphragm support.

With the above-mentioned technical means, the speaker diaphragm device of this creation not only has the characteristics of light weight, but also forms a diamond film on the outside of the diaphragm, which can effectively reduce the weight of the diaphragm without greatly increasing the weight of the diaphragm. The hardness of the entire diaphragm is increased, so that the diaphragm can produce better sound quality after being driven by the voice coil and the magnet group, thereby providing an audio speaker diaphragm device with good sound quality and reproducible original sound.

Description of drawings

Fig. 1 is the three-dimensional appearance schematic diagram of the speaker diaphragm device of the present invention installed on a sound box;

Fig. 2 is a three-dimensional schematic diagram of the appearance of the speaker unit of the present invention;

Fig. 3 is a three-dimensional exploded view of the speaker unit of the present invention;

Fig. 4 is a perspective view of the appearance of the speaker diaphragm device of the present invention;

Fig. 5 is a schematic diagram of an enlarged partial cross-sectional side view of the speaker diaphragm device of the present invention;

Fig. 6 is a schematic diagram of a partially enlarged cross-sectional side view of the speaker diaphragm device of the present invention;

Fig. 7 is a comparison diagram of sound output results between the speaker diaphragm device of the present invention and a soft silk diaphragm;

Fig. 8 is a comparison diagram of sound output results between the speaker diaphragm device of the present invention and an aluminum-magnesium alloy diaphragm; and

Fig. 9 is a comparison diagram of sound output results between the speaker diaphragm device of the present invention and the soft silk diaphragm and aluminum-magnesium alloy diaphragm.

Detailed ways

The utility model mainly provides an audio horn diaphragm device, please refer to Fig. 1 to Fig. 4, it can be seen from the figure that the audio horn diaphragm device 10 of the present invention is installed on a sound box 50 and located in a In the monomer 60, it includes a diaphragm support 20, a voice coil 30 and a diaphragm 40, wherein:

The diaphragm support 20 is fixed inside the monomer 60, the diaphragm support 20 is provided with a perforation 21 at the center, and the diaphragm support 20 is provided with an annular groove 22 on the outer periphery of the perforation 21, preferably, The diaphragm bracket 20 is provided with a plurality of connecting terminals 23 combined with the inside of the monomer 60 on the rear side;

Please refer to Fig. 5 and Fig. 6, the voice coil 30 is sleeved in the perforation 21 of the diaphragm support 20, and the front and rear ends protrude from the front and rear sides of the diaphragm support 20 respectively. 30, a coil 31 is wound on the outer surface protruding from the rear side of the diaphragm holder 20; and

The diaphragm 40 is a slightly semicircular diaphragm, the diaphragm 40 is sleeved inside the front end of the voice coil 30 and communicates with the interior of the voice coil 30 and the perforation 21 of the diaphragm support 20, preferably Ground, this diaphragm 40 is annularly provided with a ring surface 41 that abuts against the inner surface of voice coil 30 at the rear end, and this diaphragm 40 is coated with a diamond film layer 42 on the outside, preferably, this diaphragm 40 is made of titanium , aluminum or magnesium and other light metals, and the diamond film 42 is formed on the outside of the diaphragm 40 by sputtering, so that the entire diaphragm 40 has hard and light characteristics. Preferably, the diaphragm 40 In addition, a sound film fixing frame 43 is provided, and the sound film fixing frame 43 is arranged in the groove 22 on the front side of the diaphragm support 20 and abuts against the outer surface of the voice coil 30. Preferably, the sound film fixing frame 43 is in the A sound film overhang 431 is disposed adjacent to the voice coil 30 .

Please refer to Fig. 7 to Fig. 9, the sound output result (green line) of the creative audio speaker diaphragm device 10 in use is compared with a soft silk diaphragm (red line) and an aluminum-magnesium alloy diaphragm (blue line) for comparison, where the two vertical axes in the chart represent the frequency response level (dB) of the speaker (speaker) and the impedance level (Ohm) of the speaker (speaker), while the horizontal axis is the frequency range of the sound (Hz), where it can be found from the test results:

(1) The soft silk diaphragm will be affected by the negative force of the sound wave rebounded from the back of the diaphragm, which will cause the clapping phenomenon and produce another kind of slender sound, which will easily cause distortion at certain frequencies. Although it will not be unpleasant, it is different from the real one. The sound is different; the frequency response of the diaphragm is attenuated downward when it exceeds 20kHz due to insufficient softness and rigidity;

(2), although the aluminum-magnesium alloy diaphragm has the characteristics of hard and light metal material, its hardness cannot be compared with the diaphragm 40 with the diamond film layer 42 in this creation, and the distortion is high. fast decay up to the limit; and

(3), the diaphragm 40 with diamond film layer 42 adopts light metals such as titanium, aluminum, magnesium as materials, and a diamond-like sandwich film layer 42 structure is sputtered on the surface of the aforementioned light metal, and simultaneously has a diamond vibration The hardness of the membrane and the lightness of the light metal make it hard to cause the diaphragm 40 to collapse in some frequency bands, so it can have higher frequency extension, and its lightness can make the diaphragm 40 respond well to small signals. Therefore, For example, the audio frequency performance of the sandwich structure diamond film layer 42 has fast response, small distortion, good transient characteristics, and can fully express the details of music. It can be said to be one of the most ideal and most facsimile audio materials, and its frequency response can smoothly exceed 40kHz. .

Through the above-mentioned technical means, the speaker diaphragm device 10 of this creation not only has the characteristics of light weight, but also forms a diamond film layer 42 on the outside of the diaphragm 40, without greatly increasing the weight of the diaphragm 40. , effectively improve the hardness of the entire diaphragm 40, so that the diaphragm 40 can produce better sound quality after being driven by the voice coil 30 and the magnet group, so as to provide an audio speaker diaphragm device with good sound quality and reproducible original sound 10.

Claims (7)

1. a Music centre loudspeaker diaphragm means comprises a vibrating diaphragm support, a voice coil loudspeaker voice coil and a diaphragm, it is characterized in that:

This vibrating diaphragm support runs through in the center and is provided with a perforation, and this vibrating diaphragm support is provided with an annular groove in the outer peripheral edges of perforation;

This voice coil loudspeaker voice coil is sheathed on the forward and backward side that perforation is interior and front and back ends stretches out this vibrating diaphragm support respectively of this vibrating diaphragm support, and this voice coil loudspeaker voice coil is arranged with a coil on the outer surface that stretches out this vibrating diaphragm support rear side; And

This diaphragm is sheathed on this voice coil loudspeaker voice coil front end inside and is connected with the inside of this voice coil loudspeaker voice coil and the perforation of this vibrating diaphragm support, and this diaphragm is covered with a diamond rete in external packets.

2. Music centre loudspeaker diaphragm means as claimed in claim 1 is characterized in that this diaphragm is by the made semicircle film body of titanium, aluminium or magnesium light metal.

3. Music centre loudspeaker diaphragm means as claimed in claim 1 or 2, it is characterized in that this diaphragm is provided with a sound film fixed frame in addition, this sound film fixed frame is located in the groove of this vibrating diaphragm support leading flank and with the voice coil loudspeaker voice coil outer surface and is reclined mutually, and this sound film fixed frame is being provided with a sound film and hangs the limit in the place of reclining mutually with this voice coil loudspeaker voice coil.

4. Music centre loudspeaker diaphragm means as claimed in claim 3 is characterized in that this diaphragm is provided with an anchor ring that reclines mutually with the voice coil loudspeaker voice coil inner surface in the rear end annular.

5. Music centre loudspeaker diaphragm means as claimed in claim 4 is characterized in that this vibrating diaphragm support is convexly equipped with in trailing flank to be formed with a plurality of binding posts.

6. Music centre loudspeaker diaphragm means as claimed in claim 1 is characterized in that this diaphragm is provided with an anchor ring that reclines mutually with the voice coil loudspeaker voice coil inner surface in the rear end annular.

7. Music centre loudspeaker diaphragm means as claimed in claim 1 is characterized in that this vibrating diaphragm support is convexly equipped with in trailing flank to be formed with a plurality of binding posts.

Images