WO2022036959A1

WO2022036959A1 - 360-degree omnidirectional full frequency loudspeaker and vibrating diaphragm thereof

Info

Publication number: WO2022036959A1
Application number: PCT/CN2020/136852
Authority: WO
Inventors: 金海鸥; 吴念博; 何新喜; 朱信智; 李碧英; 杨萍
Original assignee: 苏州礼乐乐器股份有限公司
Priority date: 2020-08-21
Filing date: 2020-12-16
Publication date: 2022-02-24
Also published as: CN111954127A

Abstract

A 360-degree omni-directional full frequency loudspeaker and a vibrating diaphragm thereof. The loudspeaker comprises a lantern-shaped diaphragm, which is mainly composed by a group of vibrating diaphragms being uniformly arranged around the central axis of the lantern shape. The main body of the vibrating diaphragm is a curved sheet body, which is characterized in that a double sound beam is fixed in parallel on an inner recessed surface of the sheet body, while a transverse groove and a longitudinal groove are provided on the inner recessed surface of the sheet body, and the transverse groove and the longitudinal groove are arranged in a cross and linked to one another on the inner recessed surface of the sheet body and form a cross-shaped sound tunnel. The present solution solves the problem in which original 360-degree omni-directional speakers are not suitable for full frequency (broadband) vibration. Now, a 360-degree omni-directional full frequency speaker can replace the original combination of high, medium, and low tone 360 degree omni-directional speakers, and at the same time can even replace the effect obtained by a subwoofer.

Description

A 360-degree omnidirectional full-range speaker and its vibrating diaphragm

technical field

The invention relates to electroacoustic devices, in particular to a 360-degree omnidirectional full-frequency loudspeaker and its vibrating diaphragm.

Background technique

As we all know, a loudspeaker is a common electronic and electrical sound-producing device, and its working principle is to restore an electrical signal containing sound information to a sound signal. As an important part of the sound output end of electronic products, speakers are widely used in people's life, work and entertainment.

At present, commonly used speakers generally include a magnetic circuit system, a driving system and a sound transmission system. The traditional sound transmission system generally can only transmit sound in one direction. When sound transmission in all directions is required, multiple speakers need to be installed at the same time, and the multiple speakers should be arranged toward each sound transmission direction. This setting can only solve the problem of multi-directional simultaneous sound transmission, but it will cause mutual interference between several speakers, which not only has poor synchronization effect, but also brings a lot of noise.

In order to solve the problem of 360-degree synchronous sound transmission of speakers, a specific representative 360-degree omni-directional speaker has appeared on the market in recent years, such as its new super flagship launched by Germany's top Hi-End audio brand MBL: 360-degree sound System 101extreme. The sound generation system consists of two parts, an audio high-power amplifier (drive system) and a speaker system, and the speaker system consists of a pair of 360-degree omnidirectional speaker groups (two identical 360-degree omnidirectional speaker groups) and a pair of subwoofers composition. Among them, each 360-degree omnidirectional speaker group, as shown in Figure 1-2, is mainly composed of a frame 1, two high-pitched 360-degree omnidirectional speakers 2, two mid-range 360-degree omnidirectional speakers 3 and two bass 360 It consists of 4 omnidirectional speakers (see Figure 1). These 360-degree omnidirectional speakers take the center of the frame 1 as the base point, a group of high, medium and bass 360-degree omnidirectional speakers are vertically spaced from the base point from bottom to top, and another group of high, medium and bass 360 The 360-degree omnidirectional speakers are vertically spaced from the base point from top to bottom (see Figure 2), and the diaphragms of each 360-degree omnidirectional speaker (regardless of high, medium, and bass) are lantern-shaped diaphragms ( The shape is similar to a "lantern"), that is, it is composed of a group of curved vibrating diaphragms 14 (see Figures 3-5) that are evenly arranged around the vertical axis of the lantern shape (see Figure 6). One end is used as the fixed end of the speaker diaphragm, and the other end of the lantern-shaped diaphragm is used as the driving end of the speaker diaphragm. The fixed end of the lantern-shaped diaphragm is fixed relative to the central column 5 (see FIG. 2 ), and the driving end is connected to the central column 5 through the cooperation of the coil and the magnet (see FIG. 2 ). The high-pitched and mid-range curved vibrating diaphragms 14 are composed of graphite fiber (carbon fiber) sheets, and the bass curved vibrating diaphragm 14 is composed of aluminum alloy sheets. The outside of the vibrating diaphragm 14 is leaf-shaped, and the body of the vibrating diaphragm 14 is provided with reinforcing ribs 15 (see FIGS. 3-5 ). The pair of subwoofers is composed of two groups of active (built-in power amplifier) ultra-low frequency arrays, one on the left and one on the right, both of which are square cylinders, with a total of four built-in 12-inch ultra-low frequency units.

The 360-degree speakers described above were revolutionary at the time! As we all know, when listening to music in a concert hall, the real performance effects include direct sound, reflected sound, complex and rich overtone sound, etc. The above-mentioned 360-degree sound system 101extreme was launched because traditional speakers cannot create a full range of sound effects. It is difficult to produce the real feeling of being on the scene, and the 360-degree omnidirectional speaker reproduces the live performance of the symphony orchestra in the room. So far, MBL's 360-degree omnidirectional speaker is still recognized as the world's first.

However, the above-mentioned 360-degree omni-directional speaker group requires the use of 360-degree omni-directional speakers with different frequencies of treble, mid-range and bass, and even a subwoofer. Although this design has a good sound effect, it has shortcomings. Yes: the structure is complex and the manufacturing cost is high.

In view of this, how to improve the existing 360-degree omnidirectional loudspeaker to simplify the structure and reduce the cost is the research subject of the present invention.

SUMMARY OF THE INVENTION

The present invention provides a 360-degree omnidirectional full-frequency speaker and its vibrating diaphragm, the purpose of which is to solve the problem that the existing 360-degree omnidirectional speaker is not suitable for full-frequency (broadband) vibration, and requires high, medium and bass 360-degree omnidirectional speakers The combination of segments leads to the problems of complex structure and high manufacturing cost.

In order to achieve the above purpose, the technical solution adopted by the vibrating diaphragm of the present invention is: a vibrating diaphragm for a 360-degree omnidirectional full-frequency speaker, the main body of the vibrating diaphragm is a curved sheet body, and the curved sheet body It has inner concave and outer convex surfaces, and its innovation lies in:

Two sound beams are arranged on the inner concave surface of the sheet body, and the sound beams are elongated sound beam members. One side of the two sound beams is closely fixed on the inner concave surface of the sheet body. The other side of the beam is suspended, the length direction of the two sound beams is consistent with the length direction of the sheet body, and the two sound beams are juxtaposed and separated by a distance in the width direction of the sheet body.

A transverse groove and a longitudinal groove are opened on the inner concave surface of the sheet body, and the transverse groove and the longitudinal groove are arranged crosswise on the inner concave surface of the sheet body and penetrate each other, wherein the longitudinal groove is located between the two sound beams The length direction of the longitudinal groove is consistent with the length direction of the sound beam; the transverse groove spans the two sound beams in the width direction of the sheet body, and a transverse sound tunnel is formed on the concave surface of the sheet body. The grooves form longitudinal sound tunnels on the inner concave surface of the sheet body.

The relevant contents in the above technical solutions are explained as follows:

1. In the above solution, the shape of the sheet body can be leaf-shaped or elongated.

2. In the above solution, struts are provided at the positions where the transverse grooves and the sound beams intersect, one end of the struts abuts against the groove bottom of the transverse grooves, and the other end abuts on the sound beams.

3. In the above scheme, a bridge hole can be provided on the sound beam, the bridge hole is a hole on one side of the sound beam, and the sound beam forms a bridge-type sound beam structure, and the bridge hole is erected on the transverse groove.

4. In the above solution, a reinforcing plate can be fixed between the two sound beams.

5. In the above solution, both the lateral grooves and the longitudinal grooves are arc-shaped grooves.

In order to achieve the above purpose, the technical solution adopted by the full-frequency speaker of the present invention is: a 360-degree omnidirectional full-frequency speaker, including a lantern-shaped diaphragm, the shape of the lantern-shaped diaphragm is similar to a lantern, and the lantern-shaped diaphragm is mainly composed of A group of vibrating diaphragms are evenly arranged around the central axis of the lantern shape, one end of the lantern-shaped diaphragm is used as the fixed end of the speaker diaphragm, and the other end of the lantern-shaped diaphragm is used as the driving end of the speaker diaphragm.

The main body of the vibrating diaphragm is a curved sheet body, and the curved sheet body has an inner concave surface and an outer convex surface. The innovation lies in:

1. In the above scheme, the theme is "a 360-degree omnidirectional full-range speaker" and the innovation is concentrated on the lantern-shaped diaphragm, so there are no other structures other than the lantern-shaped diaphragm, such as the central pillar, coil, magnet And the structure and connection method of the fixed end and the driving end of the lantern-shaped diaphragm are described. It can be considered that other structures except the lantern-shaped diaphragm in the full-range speaker of the present invention are realized by using the prior art.

2. In the above solution, a gap can be left between two adjacent vibrating diaphragms in the direction surrounding the central axis of the lantern shape, and a flexible connecting piece is provided at the gap, and the flexible connecting piece is connected to the two adjacent vibrating diaphragms. between the diaphragms.

The design principle and concept of the present invention are as follows: in order to solve the problem that the existing 360-degree omni-directional loudspeaker is not suitable for full-frequency (broadband) vibration, the present invention is suitable for the lantern-shaped diaphragm of the existing 360-degree omni-directional loudspeaker, especially the lantern-shaped diaphragm. The vibrating diaphragm has been improved. It is embodied in the following two aspects: first, a double sound beam structure is designed on the concave surface of the original curved sheet body; transverse groove and longitudinal groove), the cross-shaped groove forms a cross-shaped sound tunnel (ie, a transverse sound tunnel and a longitudinal sound tunnel) on the inner concave surface of the sheet body. Aiming at the problem that the existing 360-degree omnidirectional loudspeaker is not suitable for full-frequency (broad-frequency) vibration, the present invention conducts in-depth discussions and research on the design and sound generation mechanism of the lantern-shaped diaphragm, and finds out that the existing lantern-shaped diaphragm is not suitable for full-frequency (broad-frequency) vibration. The main reason for the frequency (broadband) vibration is that the existing vibrating diaphragm itself cannot bear the full frequency (broadband) vibration. Accordingly, the inventor broke the shackles of the original vibrating diaphragm design, and boldly proposed an improved design scheme of the present invention. This improved design scheme changes the free vibration mode of the original vibrating diaphragm into the current standard vibration mode, from The angle of vibration, resonance and sound generation solves the problem that the lantern-shaped diaphragm and its diaphragm are not suitable for full-frequency (broad-frequency) vibration. Practice has proved that the improved design scheme has outstanding substantive characteristics and significant technical progress, and has obtained obvious technical effect. After the improvement, a 360-degree omni-directional speaker of the present invention can replace the sound effect of the original treble 360-degree omni-directional speaker, mid-range 360-degree omni-directional speaker and bass 360-degree omni-directional speaker, and can even replace the subwoofer at the same time. Effect.

Due to the application of the above-mentioned technical solutions, the present invention has the following advantages and effects compared with the existing 360-degree omnidirectional loudspeaker:

1. The present invention is provided with a double sound beam structure on each vibrating diaphragm in the lantern-shaped diaphragm (that is, two sound beams are fixed and arranged side by side on the inner concave surface of the vibrating diaphragm). The frequency is low, the bass resonance is concentrated in the central area of the diaphragm, the treble resonance is concentrated in the edge area of the diaphragm, and the strength of the central area of the diaphragm is strengthened, which plays an important role in improving the tone and sound quality of the bass region, as well as improving the volume and penetration. effect. Since the thickness of the diaphragm is thick in the central area and thin at the edge, the thickness of the diaphragm is gradually increased, which strengthens the strength of the central area of the diaphragm, and relatively changes the thickness gap between the central area and the edge area of the diaphragm, which is beneficial to improving the sound of the high-pitched area. And sound quality as well as boosting volume and penetration also worked well.

2. The present invention is provided with a cross-shaped groove (ie, a transverse groove and a longitudinal groove) on the concave surface of the vibrating diaphragm, and the cross-shaped groove actually forms a cross-shaped sound tunnel on the concave surface of the vibrating diaphragm. Due to the large amplitude and low frequency of the bass relative to the treble, the bass resonance is concentrated in the central area of the vibrating diaphragm, and the treble resonance is concentrated in the edge area of the vibrating diaphragm. (that is, the sound tunnel) is rapidly transmitted to the edge of the vibrating diaphragm, which plays a key role in improving the timbre and sound quality in the treble region and improving the volume and penetration, while improving the timbre and volume in the bass region and improving the volume and penetration. Force also played a good role.

3. In the present invention, the sound beam is designed into a bridge-type sound beam structure, especially a hole is designed on one side of the sound beam, so that the sound beam is like a bridge arch structure. When such a sound beam is erected on the sound tunnel, it is more conducive to transmit vibration through the sound tunnel, and it is also more conducive to the resonance of the vibrating diaphragm.

4. The present invention adopts the combined design of double sound beams and cross sound tunnels on the concave surface of the vibrating diaphragm, and divides one sheet body into four resonance regions in the state of facing the vibrating diaphragm. When the vibrating diaphragm is working, the vibration is first collected by the cross center area of the cross sound tunnel, and then transmitted to the four resonance areas through the cross sound tunnel, and generates resonance and vibration, so as to amplify the vibration into the resonance sound of the vibrating diaphragm, In this way, the vibration of the external sound source is amplified into the resonance of the vibrating diaphragm. Before the improvement, each vibrating diaphragm can only generate one sound wave when vibrating, that is, there is only one resonance area, each resonance area generates one sound wave, plus one original sound wave, a total of two sound waves. After the improvement, each vibrating diaphragm of the present invention can generate five sound waves during operation, among which, four resonance regions generate four sound waves, plus one original sound wave, for a total of five sound waves. The volume of sound waves is the number of sound waves. For a specific vibrating diaphragm, in addition to one original sound wave volume, it mainly depends on the number of resonance areas on the diaphragm. Usually, each resonance area produces a volume of sound waves, and how many are there? How many sound waves are generated in the resonance region. In addition, the amount of sound waves directly affects the timbre, penetration, and volume of the instrument. Therefore, the design of the present invention can obviously improve the timbre of the high-pitched and low-pitched regions, and increase the penetration and volume of the high-pitched and low-pitched regions.

5. The present invention fixedly erects a reinforcing plate between the two sound beams. One of its functions is to increase the strength of the middle area of the vibrating diaphragm, especially between the sound beams, and the second is to increase the load when the two sound beams resonate. , which further improves the tone, penetration and volume of the bass region. On the other hand, it strengthens the central region of the diaphragm, which relatively widens the strength gap between the central region and the edge region, which is also conducive to improving the soundness of the high-pitched region. Timbre, penetration and volume.

6. The transverse grooves and the longitudinal grooves of the present invention are arc-shaped grooves, which can minimize the sudden change in thickness of the vibrating diaphragm and affect resonance and vibration.

Description of drawings

Accompanying drawing 1 is the stereo schematic diagram of the existing 360-degree omni-directional loudspeaker group;

Accompanying drawing 2 is the structural schematic diagram of the loudspeaker part in the existing 360-degree omnidirectional loudspeaker group;

3 is a front view of a leaf-shaped vibrating diaphragm in an existing 360-degree omnidirectional loudspeaker;

Accompanying drawing 4 is the left side view of FIG. 3;

Accompanying drawing 5 is the A-A sectional view of FIG. 3;

Accompanying drawing 6 is the sectional view of the existing 360-degree omnidirectional loudspeaker looking down on the vibrating diaphragm;

Accompanying drawing 7 is the enlarged view at D of Fig. 6;

8 is a schematic structural diagram of a 360-degree omnidirectional speaker group according to an embodiment of the present invention;

9 is a cross-sectional view of a 360-degree omnidirectional speaker group according to an embodiment of the present invention;

FIG. 10 is a front view of a leaf-shaped vibrating diaphragm according to an embodiment of the present invention;

Accompanying drawing 11 is the left side view of FIG. 10;

Accompanying drawing 12 is B-B sectional view of FIG. 10;

13 is a cross-sectional view of the vibrating diaphragm of a 360-degree omnidirectional loudspeaker in an overhead view according to an embodiment of the present invention;

Accompanying drawing 14 is the enlarged view of the E place of FIG. 13;

FIG. 15 is a front view of a long strip-shaped vibrating diaphragm according to an embodiment of the present invention;

Figure 16 is a left side view of Figure 15;

FIG. 17 is a C-C cross-sectional view of FIG. 15 .

In the above drawings: 1. Frame; 2. Treble 360-degree omnidirectional speaker; 3. Mid-range 360-degree omnidirectional speaker; 4. Bass 360-degree omnidirectional speaker; 5. Center pillar; 6. Treble coil; 7. Treble Magnet; 8. Magnet holder; 9. Small pillar; 10. Mid-range coil; 11. Mid-range magnet; 12. Bass coil; 13. Bass magnet; 14. Vibrating diaphragm; 15. Reinforcing rib; 16. Flexible connecting piece ; 17. 360-degree omnidirectional full-range speaker; 18. full-frequency coil; 19. full-frequency magnet; 20. base; 21. top seat; 22. longitudinal strut; 23. horizontal strut; 25. Fixed seat; 26. Sound beam; 27. Transverse groove; 28. Longitudinal groove; 29. Bridge hole; 30. Bar-shaped full-frequency vibration diaphragm.

detailed description

Below in conjunction with accompanying drawing and embodiment, the present invention is further described:

Example: a 360-degree omnidirectional full-range speaker (including a vibrating diaphragm)

Regarding the 360-degree omnidirectional loudspeaker, a lot of technical information such as structural design has been provided in the background art introduction and the prior art. Since the innovations of the present invention are all focused on the lantern-shaped diaphragm and its vibrating diaphragm, other structures and changes other than the lantern-shaped diaphragm and its vibrating diaphragm are not described in detail in this embodiment. All other structures except the lantern-shaped diaphragm in the inventive full-range loudspeaker can be realized by using the prior art.

This embodiment uses FIG. 8 to FIG. 14 as an example to introduce the 360-degree omnidirectional full-range speaker of the present invention:

As shown in Figures 8-14, a 360-degree omnidirectional full-range speaker group consists of two 360-degree omnidirectional full-range speakers (two 360-degree omnidirectional full-range speakers can be the same size, It can also be different in size. In this embodiment, the same size is used as an example), and two 360-degree omnidirectional full-range speakers are arranged up and down in the frame (see FIGS. 8 and 9 ). The frame is composed of a top seat 21, a base 20, four longitudinal struts 22, and two transverse struts 23 (see Figs. 8 and 9). A center pillar 5 is arranged in the center of the frame, and the center pillar 5 is arranged on the central axis position of the upper and lower two 360-degree omnidirectional full-range speakers.

The 360-degree omnidirectional full-range speaker above has a lantern-shaped diaphragm (shaped like a lantern). Fixed on the fixed seat 25 , the driving end is connected to the top seat 21 through the full-frequency coil 18 and the full-frequency magnet 19 . And the fixed seat 25 is fixedly positioned at the position where the transverse strut 23 and the central strut 5 intersect (see FIGS. 8 and 9 ).

The 360-degree omnidirectional full-range speaker below has a lantern-shaped diaphragm (shaped like a lantern), the upper end of the lantern-shaped diaphragm is used as the fixed end of the speaker diaphragm, and the lower end is used as the driving end of the speaker diaphragm, wherein the fixed end is opposite to The driving end is connected to the base 20 through the full-frequency coil 18 and the full-frequency magnet 19 and is fixed on the fixed seat 25 . And the fixed seat 25 is fixedly positioned at the position where the transverse strut 23 and the central strut 5 intersect (see FIGS. 8 and 9 ).

In any of the 360-degree omnidirectional full-range loudspeakers in this embodiment, the lantern-shaped diaphragm is composed of 10 leaf-shaped full-range diaphragms 24 evenly arranged around the central axis of the lantern shape. There is a gap between the frequency vibration diaphragms 24, and a flexible connecting piece 16 is arranged at the gap, and the flexible connecting piece 16 is connected between two adjacent leaf-shaped full-frequency vibration diaphragms 24 (see Figure 13 and Figure 14) .

The main body of the leaf-shaped full-frequency vibration diaphragm 24 is a curved sheet body (see FIGS. 10-12 ), and the curved sheet body has an inner concave surface and an outer convex surface.

There are two sound beams 26 on the inner concave surface of the sheet body (see FIGS. 10-12 ). The sound beams 26 are elongated sound beam components, and one side of the two sound beams 26 is closely fixed on the On the inner concave surface of the sheet body, the other sides of the two sound beams 26 are suspended in the air, the length directions of the two sound beams 26 are consistent with the length direction of the sheet body, and the two sound beams 26 are parallel and juxtaposed in the width direction of the sheet body. some distance apart. The sheet body and the two sound beams 26 can be integrally formed, or they can be separated first and then fixed and connected into one. The material of the leaf-shaped full-frequency vibration diaphragm 24 can be selected from carbon fiber, aluminum alloy, and the like.

A transverse groove 27 and a longitudinal groove 28 are opened on the concave surface of the sheet body (see FIGS. 10-12 ), and the transverse groove 27 and the longitudinal groove 28 are arranged crosswise on the concave surface of the sheet body and pass through each other. , wherein the longitudinal groove 28 is located between the two sound beams 26, and the length direction of the longitudinal groove 28 is consistent with the length direction of the sound beam 26; the transverse groove 27 spans two sound beams in the width direction of the sheet body The beam 26 forms a transverse sound tunnel on the inner concave surface of the sheet body, and the longitudinal groove 28 forms a longitudinal sound tunnel on the inner concave surface of the sheet body.

The sound beam 26 is provided with a bridge hole 29 (see Fig. 11 ), and the bridge hole 29 is a hole on one side of the sound beam 26 and makes the sound beam 26 form a bridge-type sound beam structure, and the bridge hole 29 is erected on the transverse groove 27. A strut (not shown in the figure) is provided at the position where the transverse groove 27 intersects the sound beam 26 . A reinforcing plate (not shown in the figure) is fixed between the two sound beams 26 .

The length of the transverse groove 27 is smaller than the length of the sheet body at the corresponding position of the transverse groove 27 , and smooth transition surfaces are provided between the two ends of the transverse groove 27 and the inner concave surface of the sheet body (see FIG. 10 ). The length of the longitudinal groove 28 is smaller than the length of the sheet body at the corresponding position of the longitudinal groove 28 , and smooth transition surfaces are provided between the two ends of the longitudinal groove 28 and the inner concave surface of the sheet body (see FIG. 10 ). The transverse grooves 27 and the longitudinal grooves 28 are arc-shaped grooves.

The following descriptions are made for other implementations of the present invention and structural changes:

1. In the above embodiment, two 360-degree omni-directional full-range speakers arranged above and below the frame are provided at the same time. However, the present invention is not limited to this. It is also possible to set one 360-degree omnidirectional full-range speaker in the frame, or even three or more. The present invention is at least one 360-degree omnidirectional full-range speaker in number. . This is easily understood and accepted by those skilled in the art.

2. In the above embodiment, the diaphragm used for the lantern-shaped diaphragm is a leaf-shaped full-frequency diaphragm 24 (see FIGS. 10-12 ). However, the present invention is not limited to this, and it is also a feasible solution to replace the leaf-shaped full-frequency vibration diaphragm 24 with a strip-shaped full-frequency vibration diaphragm 30 (see FIGS. 15-17 ), and the equivalent technical effect can be obtained. This is easily understood and accepted by those skilled in the art.

3. In the above embodiment, a double sound beam structure is arranged on the inner concave surface of the sheet body. That is, two sound beams 26 are arranged on the inner concave surface of the sheet body. However, the present invention is not limited to this, and the form of two sound beams 26 can be changed to four sound beams 26 used in parallel. For the present invention, although the number and form of the four bracing beams 26 and the two bracing beams 26 are different, their essence is the same. Assuming that the two outer bracings of the four bracings 26 are approached toward the two inner bracings, it can be equivalent to two bracings. Therefore, it can be considered that this change does not bring unexpected effects, and should be understood as substantially equivalent. This is easily understood by those skilled in the art.

4. In the above embodiment, it can be seen from FIG. 10 that the two bracing beams 26 are parallel and juxtaposed on the inner concave surface of the sheet body. However, the present invention is not limited to this, and the two sound beams 26 do not have to be parallel, but it is best to be arranged in parallel, which is easily understood and accepted by those skilled in the art.

5. In the above embodiments, struts (not shown in the figure) are provided at the positions where the transverse grooves 27 and the sound beams 26 intersect. However, the present invention is not limited to this, and the pillars may not be provided. This is easily understood and accepted by those skilled in the art.

6. In the above embodiment, the bridge hole 29 is provided on the sound beam 26 . However, the present invention is not limited to this, and the bridge hole 29 may not be provided. This is easily understood and accepted by those skilled in the art.

7. In the above embodiment, a reinforcing plate (not shown in the figure) is fixedly erected between the two sound beams 26 . However, the present invention is not limited to this, and the reinforcing plate may not be provided. The function of the reinforcing plate is to increase the strength of the middle area of the concave surface of the sheet, especially the strength between the sound beams, and second, to increase the load when the two sound beams resonate.

8. In the above embodiments, the transverse grooves 27 and the longitudinal grooves 28 are arc-shaped grooves. However, the present invention is not limited to this, and the grooves can be designed into other shapes, such as concave structures such as V-shape, U-shape, and W-shape. This is easily understood and accepted by those skilled in the art.

10. In the above embodiment, the shape and size of the two sound beams 26 are the same (see FIGS. 10-12 ). However, the present invention is not limited to this, and the shapes and sizes of the two sound beams 26 may be different. This is easily understood and accepted by those skilled in the art.

The above-mentioned embodiments are only intended to illustrate the technical concept and characteristics of the present invention, and the purpose thereof is to enable those who are familiar with the art to understand the content of the present invention and implement them accordingly, and cannot limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be included within the protection scope of the present invention.

Claims

A vibrating diaphragm of a 360-degree omnidirectional full-frequency speaker, the main body of the vibrating diaphragm is a curved sheet body, and the curved sheet body has an inner concave surface and an outer convex surface, characterized in that:

Two sound beams (26) are arranged on the inner concave surface of the sheet body, the sound beams (26) are elongated sound beam members, and one side of the two sound beams (26) is closely fixed on the sheet On the inner concave surface of the body, the other sides of the two sound beams (26) are suspended in the air, and the length directions of the two sound beams (26) are consistent with the length direction of the sheet body. ) side by side and separated by a distance;

A transverse groove (27) and a longitudinal groove (28) are provided on the inner concave surface of the sheet body, and the transverse groove (27) and the longitudinal groove (28) are arranged crosswise on the inner concave surface of the sheet body and pass through each other , wherein the longitudinal groove (28) is located between the two sound beams (26), and the longitudinal direction of the longitudinal groove (28) is consistent with the length direction of the sound beam (26); The body spans two sound beams (26) in the width direction, and forms a transverse sound tunnel on the inner concave surface of the sheet body, and a longitudinal groove (28) forms a longitudinal sound tunnel on the inner concave surface of the sheet body.
The vibrating diaphragm according to claim 1, wherein the outer shape of the sheet body is a leaf shape or a strip shape.
The vibrating diaphragm according to claim 1, characterized in that a strut is provided at the position where the transverse groove (27) and the sound beam (26) cross each other, and one end of the strut abuts against the transverse groove (27). ) at the bottom of the groove, and the other end abuts on the sound beam (26).
The vibrating diaphragm according to claim 1, characterized in that: the sound beam (26) is provided with a bridge hole (29), and the bridge hole (29) is a hole on one side of the sound beam (26) and makes the sound beam (26) A bridge-type sound beam structure is formed, and the bridge hole (29) is erected on the transverse groove (27).
The vibrating diaphragm according to claim 1, wherein a reinforcing plate is fixedly framed between the two sound beams (26).
The vibrating diaphragm according to claim 1, characterized in that: the length of the transverse groove (27) is less than the length of the sheet body at the corresponding position of the transverse groove (27), and the two ends of the transverse groove (27) are A smooth transition surface is provided between the inner concave surface of the sheet body; the length of the longitudinal groove (28) is less than the length of the sheet body at the corresponding position of the longitudinal groove (28), and the two ends of the longitudinal groove (28) are connected to the sheet body. Smooth transition surfaces are arranged between the inner concave surfaces of the body.
The vibrating diaphragm according to claim 1, wherein the transverse groove (27) and the longitudinal groove (28) are arc-shaped grooves.
A 360-degree omnidirectional full-range speaker, comprising a lantern-shaped diaphragm, the lantern-shaped diaphragm is similar in shape to a lantern, and the lantern-shaped diaphragm is mainly composed of a group of vibrating diaphragms evenly arranged around the central axis of the lantern shape, and the lantern is formed. One end of the lantern-shaped diaphragm is used as the fixed end of the speaker diaphragm, and the other end of the lantern-shaped diaphragm is used as the driving end of the speaker diaphragm;

The main body of the vibrating diaphragm is a curved sheet body, and the curved sheet body has an inner concave surface and an outer convex surface, and is characterized in that:

Two sound beams (26) are arranged on the inner concave surface of the sheet body, the sound beams (26) are elongated sound beam members, and one side of the two sound beams (26) is closely fixed on the sheet On the inner concave surface of the body, the other sides of the two sound beams (26) are suspended in the air, the length directions of the two sound beams (26) are consistent with the length direction of the sheet body, and the two sound beams (26) are in the width direction of the sheet body. ) side by side and separated by a distance;

A transverse groove (27) and a longitudinal groove (28) are opened on the concave surface of the sheet body, and the transverse groove (27) and the longitudinal groove (28) are arranged crosswise on the concave surface of the sheet body and pass through each other , wherein the longitudinal groove (28) is located between the two sound beams (26), and the length direction of the longitudinal groove (28) is consistent with the length direction of the sound beam (26); The body spans two sound beams (26) in the width direction, and forms a transverse sound tunnel on the inner concave surface of the sheet body, and a longitudinal groove (28) forms a longitudinal sound tunnel on the inner concave surface of the sheet body.
The 360-degree omni-directional full-range speaker according to claim 8, wherein in the direction of the central axis surrounding the lantern shape, a gap is left between two adjacent vibrating diaphragms, and the gap is provided with a flexible connecting piece (16), the flexible connecting sheet (16) is connected between two adjacent vibrating diaphragms.