A loudspeaker with a ring-shaped inlaid sound beam

Abstract

A loudspeaker with an annular embedded sound beam comprises a voice coil, a magnet, a diaphragm and a magnetic guide structure; the diaphragm is conical, the upper end is outwardly flared and open, and the lower end is inwardly recessed and corresponds to the voice coil; the loudspeaker further comprises a sound beam assembly embedded in the diaphragm and having a distance from the dust cover of the voice coil; the sound beam assembly comprises a plurality of arc-shaped sound beam members arranged in a ring shape, and there is a gap between adjacent two arc-shaped sound beam members; the diaphragm is further provided with at least two grooves arranged in a radial manner, which equally divide the surface of the diaphragm outside the sound beam assembly into a plurality of resonance zones; the grooves are in one-to-one alignment with the gaps between the two arc-shaped sound beam members; and the grooves are recessed on the surface of the diaphragm to form sound tunnels. The sound beam assembly is embedded in the diaphragm, which is beneficial to the thinning of the product, improves the process implementation and product stability, and ensures the sound quality and tone.

Description

TECHNICAL FIELD

[0001] The present application relates to a loudspeaker, in particular to a loudspeaker with a ring-shaped embedded sound beam. BACKGROUND

[0002] A loudspeaker (also known as a loudspeaker) is a device that converts an electrical signal into an acoustic signal, such as Figure 1 As described above, a conventional loudspeaker is generally composed of a voice coil 1, a magnet 2, a magnetic plate 3, a magnetic column 4, a diaphragm 5 (i.e. a paper cone), etc. When the loudspeaker is working, the amplifier outputs an electrical current of varying size, which is converted into a sound wave by a frequency wave. The power is pushed to increase the output energy. Under the action of the magnetic field, the voice coil 1 moves, and the voice coil 1 is connected to the diaphragm 5 and drives the diaphragm 5 to vibrate. The vibration of the diaphragm 5 pushes the air, thereby emitting sound.

[0003] A common problem with conventional loudspeakers is that the loudspeaker has a natural resonant frequency when it emits sound. Beyond a certain range of the resonant frequency area, the high-frequency area is not bright, and the low-frequency area is not thick and round. The bass must be realized by a special bass speaker, and the treble must be realized by a special treble speaker, i.e. the tone is proportional to the number of loudspeakers, and a single loudspeaker cannot realize high-quality sound in the full frequency band. The main reason is that the current loudspeaker diaphragm cannot meet the good wide frequency vibration from the high-frequency area to the low-frequency area, i.e. it cannot adapt to the wide frequency variation and vibration of the high-frequency area, the medium-frequency area and the low-frequency area at the same time. In summary, the structure of the conventional loudspeaker is not reasonable, which is not conducive to the diaphragm to produce good sound wave vibration from the high-frequency area to the low-frequency area. If you want to achieve a high-quality sound performance, you need to combine multiple loudspeakers of different frequency bands, i.e. through a combination of sound to achieve, which is usually expensive, not conducive to expanding the market, and the volume of the combination of sound is usually large, requiring more space for placement, and the energy demand is high.

[0004] To solve the above problems, the applicant applied for a Chinese patent "Full-frequency high-quality loudspeaker with sound beam and sound tunnel" on August 19, 2020, patent number 202021740094.3. This patent sets up a sound beam assembly on the surface of the diaphragm near the central area. Since the amplitude of the bass is relatively large and the frequency is low, the bass resonance is concentrated in the central area of the diaphragm near the voice coil, and the treble resonance is concentrated in the peripheral edge area of the diaphragm, which strengthens the load strength of the central area of the diaphragm and plays an important role in improving the tone and sound quality of the bass area. However, the above-mentioned exposed setting of the sound beam also has the following problems to be improved:

[0005] I. After the sound beam assembly is combined on the surface of the diaphragm, the total thickness of the two is large, which is not conducive to the thinness requirement of the product;

[0006] Second, the sound beam needs to be combined on the surface of the diaphragm, which requires a higher assembly process and increases the process cost;

[0007] Third, since the diaphragm is a vibrating component during operation, there is a possibility of loosening or falling off of the sound beam after a long time of operation, which directly affects the service life of the product.

[0008] Fourth, most traditional sound beam assembly processes use glue to paste the sound beam assembly on the surface of the diaphragm, which requires a higher amount of glue and glue dispensing position. Too much or too little glue or deviation of the glue dispensing position will adversely affect the sound quality of the product.

[0009] Therefore, how to solve the above-mentioned problems of the prior art has become the research and solution of the present application. SUMMARY

[0010] The purpose of the present application is to provide a loudspeaker with a ring-shaped embedded sound beam.

[0011] To achieve the above-mentioned purpose, the technical solution adopted by the present application is:

[0012] A loudspeaker with a ring-shaped segmented sound beam, comprising a voice coil, a magnet, a diaphragm and a magnetic guide structure; the diaphragm is conical, the upper end is outwardly expanded and open, and the lower end is inwardly recessed and corresponds to the voice coil;

[0013] Further comprising a sound beam assembly, the sound beam assembly is embedded in the diaphragm and has a distance from the dust cover of the voice coil; the sound beam assembly comprises a plurality of arc-shaped sound beam members, each of the arc-shaped sound beam members is arranged in a ring around the center of the horizontal direction of the diaphragm, and there is a gap between the adjacent two arc-shaped sound beam members;

[0014] At least two grooves are further provided on the diaphragm, and each of the grooves is arranged radially with the center of the horizontal direction of the diaphragm as the reference, thereby equally dividing the surface of the diaphragm outside the sound beam assembly into a plurality of resonance zones; the gap between the groove and the two arc-shaped sound beam members is matched one by one, and the groove is provided in the gap;

[0015] Among them, the groove is recessed on the surface of the diaphragm to form a sound tunnel.

[0016] 1. In the above-mentioned scheme, the magnetic guide structure can include magnetic guide plates, magnetic guide columns and other component members. Since the magnetic guide structure is not the point of the present application and belongs to the prior art that can be mastered by those skilled in the art, the present application does not make redundant description.

[0017] 2. In the above-mentioned scheme, the sound beam assembly is embedded in the diaphragm and has a distance from the dust cover of the voice coil. By this design, the sound vibration of the voice coil can be collected.

[0018] 3. In the above scheme, each of the grooves is uniformly arranged radially with the center of the diaphragm in the horizontal direction, which helps to quickly transmit the vibration of the voice coil through the radial sound tunnel formed by the grooves to the periphery of the diaphragm.

[0019] 4. In the above scheme, the grooves are arranged in the gap. With this design, it is beneficial to transmit the vibration through the sound tunnel, thereby more beneficial to improve the vibration response rate of the diaphragm.

[0020] 5. In the further technical scheme, each of the arc-shaped beam members of the beam assembly is in the form of a sheet.

[0021] 6. In the further technical scheme, the diaphragm includes at least two film layers in the thickness direction thereof, and the beam assembly is embedded between the adjacent two film layers.

[0022] 7. In the further technical scheme, the beam assembly is a metal beam assembly or a stone beam assembly, or is made of other high-density materials, so as to provide sufficient mass of the beam assembly to ensure that it can strengthen the load strength of the central region of the diaphragm.

[0023] 8. In the further technical scheme, the diaphragm is divided into an upper high-pitch region, a middle mid-pitch region and a lower bass region from the sound emitting frequency band; the wall thickness of the diaphragm gradually increases from the mouth to the inside, and the wall thickness of the bass region is greater than that of the mid-pitch region, and the wall thickness of the mid-pitch region is greater than that of the high-pitch region; the beam assembly is located in the bass region.

[0024] With this design, by arranging the thicker bass region close to the voice coil, the low-frequency vibration with lower frequency and larger amplitude can be emitted in the bass region of the diaphragm to produce more full and round bass; by arranging the thinner high-pitch region away from the voice coil, the high-frequency vibration with higher frequency and smaller amplitude can be emitted in the high-pitch region of the diaphragm to produce more transparent and bright high pitch, thereby effectively improving the tone and sound quality of the loudspeaker in the full frequency band.

[0025] 9. In the further technical scheme, the center line of the beam assembly in the up-down direction overlaps the center line of the diaphragm in the up-down direction, so as to improve the tone and sound quality.

[0026] 10. In the further technical scheme, each of the grooves is in the form of an arc-shaped groove, which can make the diaphragm have as little as possible sudden change in thickness, thereby avoiding affecting the resonance and vibration of the diaphragm.

[0027] 11. In the further technical scheme, a smooth transition surface is arranged between the outer end of the groove and the surface of the diaphragm.

[0028] Compared with the prior art, the working principle and advantages of the present application are as follows:

[0029] 1. The sound beam assembly of the present invention is embedded in the diaphragm, which reduces the total thickness of both, which is beneficial to the thinning of the product. Furthermore, the sound beam assembly can be further thinned to meet higher thinning requirements.

[0030] 2. The present invention reduces the requirements of the processing technology by embedding the sound beam component. During processing, the sound beam component is first placed on the lower membrane layer of the diaphragm, and then another membrane layer is laminated on the upper part of the sound beam component to achieve the embedding of the sound beam component, which helps to reduce the process cost.

[0031] 3. The present invention, through the embedded design of the sound beam assembly, ensures that the sound beam assembly will not loosen even after the diaphragm has been working for a long time, thus avoiding the possibility of falling off and ensuring the service life of the product.

[0032] 4. The present invention eliminates the need for glue application by embedding the sound beam component, thus avoiding many problems associated with the use of glue in traditional assembly processes.

[0033] 5. This invention, by embedding a sound beam assembly within the diaphragm, strengthens the central region of the diaphragm. Since bass frequencies have a larger amplitude and lower frequency than treble frequencies, bass resonance is concentrated in the central area near the voice coil, while treble resonance is concentrated at the periphery. This significantly improves the timbre and sound quality of the bass range. Furthermore, the diaphragm's thickness is gradually increased from the center to the periphery (i.e., thinner at the top and thicker at the bottom), further strengthening the central region and altering the thickness difference between the central and periphery areas. This also contributes to improving the timbre and sound quality of the treble range.

[0034] 6. This invention can improve the timbre by adjusting the amplitude at the original frequency.

[0035] 7. The present invention provides radial grooves on the surface of the diaphragm, which actually form radial sound tunnels on the diaphragm. The area near the voice coil gathers the vibration of the voice coil and then transmits it rapidly to the periphery of the diaphragm through the radial sound tunnels (i.e., sound tunnels). This plays a key role in improving the timbre and sound quality of the high-frequency range.

[0036] 8. The present invention designs the sound beam as a sound beam assembly, especially with a gap between the two arc-shaped sound beam components. Therefore, the gap is more conducive to the transmission of vibration through the sound tunnel, which is more conducive to the resonance of the diaphragm and the rapid vibration response.

[0037] 9. This invention, through the design of the sound beam assembly and radial grooves, divides the diaphragm into N resonant regions, the same number as the grooves. When the speaker operates, the vibration of the voice coil is first transmitted to the central region of the diaphragm, and then transmitted through the sound tunnel to each resonant region, generating resonance and vibration, thereby amplifying the vibration of the external sound source into the resonant sound of the diaphragm. Each resonant region can generate one sound wave quantity, plus one original sound wave quantity, for a total of N+1 sound wave quantities. The sound wave quantity, i.e., the number of sound waves, directly affects the timbre, penetration, and volume of the diaphragm. Therefore, the design of this invention can significantly improve the timbre of the high and low frequencies, and increase the penetration and volume of the high and low frequencies.

[0038] 10. Compared with traditional modular audio systems, this invention not only significantly reduces the size but also significantly reduces energy consumption. Attached Figure Description

[0039] Appendix Figure 1 This is a schematic diagram of the structure of a traditional loudspeaker;

[0040] Appendix Figure 2 This is a top view of the diaphragm in an embodiment of the present invention;

[0041] Appendix Figure 3 for Figure 2 Schematic diagram of the cross section along the AA direction;

[0042] Appendix Figure 4 for Figure 3 Enlarged view of point B in the image.

[0043] In the above diagrams: 1. Voice coil; 2. Magnet; 3. Magnetic plate; 4. Magnetic post; 5. Diaphragm; 6. Diaphragm; 6a. Treble range; 6b. Midrange range; 6c. Bass range; 7. Sound beam assembly; 7a. Arc-shaped sound beam component; 8. Dust cover; 9. Groove; 10. Resonance zone; 11. Gap; 12. Annular groove. Detailed Implementation

[0044] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0045] Examples: The present invention will be clearly described below with reference to the drawings and detailed description. After understanding the examples of the present invention, any person skilled in the art can make changes and modifications based on the techniques taught in the present invention without departing from the spirit and scope of the present invention.

[0046] The terms "connection" or "setup" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or acting on each other.

[0047] As used herein, the terms "comprise", "comprising", "include", "including", "have" and "having" or the like are open-ended terms that are intended to mean including, but not limited to.

[0048] As used herein, the terms "comprise", "comprising", "include", "including", "have" and "having" or the like are open-ended terms that are intended to mean including, but not limited to.

[0049] As used herein, the terms "comprise", "comprising", "include", "including", "have" and "having" or the like are open-ended terms that are intended to mean including, but not limited to.

[0050] Referring to the drawings Figures 2-4 As shown in the drawings, a loudspeaker with annular segmented sound beam comprises a voice coil 1, a magnet 2, a diaphragm 6 and a magnetic conducting structure which can be composed of a magnetic conducting plate 3 and a magnetic conducting column 4. The diaphragm 6 is conical in shape, with the upper end being outwardly flared and the lower end being inwardly recessed and corresponding to the voice coil 1.

[0051] Further comprising a sound beam assembly 7 embedded in the diaphragm 6 and having a distance from a dust cover 8 of the voice coil 1; the sound beam assembly 7 comprises a plurality of arc-shaped sound beam members 7a, each of which is arranged in a ring around the center of the diaphragm in the horizontal direction, and has a gap 11 between two adjacent arc-shaped sound beam members 7a.

[0052] Preferably, each of the arc-shaped sound beam members 7a of the sound beam assembly 7 is in the form of a sheet.

[0053] The diaphragm 6 is further provided with at least two grooves 9 recessed on the surface of the diaphragm 6 to form an acoustic tunnel. Each of the grooves 9 is radially arranged with the center of the diaphragm in the horizontal direction, thereby dividing the surface of the diaphragm 6 outside the sound beam assembly 7 into a plurality of resonance areas 10; the groove 9 is in one-to-one matching with the gap 11 between the two arc-shaped sound beam members 7a, and the groove 9 is arranged in the gap 11. Each of the grooves 9 is connected with a ring-shaped groove 12 arranged around the dust cover 8.

[0054] The diaphragm 6 can comprise at least two film layers in the thickness direction thereof, and the sound beam assembly 7 is embedded between the two adjacent film layers.

[0055] By embedding the sound beam assembly 7 in the diaphragm 6, and at the same time, setting the sound beam assembly 7 in a sheet shape, the total thickness of the two can be reduced as much as possible, which is beneficial to the thinness requirement of the product. At the same time, the embedded design also reduces the requirement of the processing technology. In specific implementation, the sound beam assembly 7 can be first placed on the lower membrane layer of the diaphragm 6, and then another membrane layer is compounded above the sound beam assembly 7 to realize the embedding of the sound beam assembly 7, which helps to reduce the process cost.

[0056] In addition, by embedding the sound beam assembly 7 in the diaphragm 6, it can be ensured that the sound beam assembly 7 will not loosen even after the diaphragm 6 works for a long time, and there is no possibility of falling off, which ensures the service life and sound quality performance of the product.

[0057] By embedding the sound beam assembly 7 in the diaphragm 6, since the amplitude of bass is relatively large and the frequency is low, the bass resonance is concentrated in the central region of the diaphragm 6 close to the voice coil 1, and the treble resonance is concentrated in the peripheral edge region of the diaphragm 6, which strengthens the load strength of the central region of the diaphragm 6 and plays an important role in improving the tone and sound quality in the bass region. Since the diaphragm 6 has a thickness gradually changing structure that the central region is thick and the peripheral edge region is thin (i.e. the design of thin upper and thick lower), the strength of the central region of the diaphragm 6 is strengthened, and relatively, the thickness difference between the central region and the peripheral edge region of the diaphragm 6 is changed, which is also beneficial to improving the tone and sound quality in the treble region.

[0058] Preferably, the sound beam assembly 7 is a metal sound beam assembly or a stone sound beam assembly, or is made of other high-density materials, which aims to provide sufficient mass for the sound beam assembly 7 to ensure that it can strengthen the load strength of the central region of the diaphragm 6.

[0059] By opening the radial grooves 9 on the diaphragm 6, the radial grooves 9 actually form radial sound tunnels on the surface of the diaphragm 6, and the area close to the voice coil 1 collects the vibration of the voice coil 1, which is then rapidly transmitted to the peripheral edge of the diaphragm 6 through the radial sound tunnels (i.e. sound tunnels), which plays a key role in improving the tone and sound quality in the treble region. At the same time, by dividing the diaphragm 6 into four resonance regions 10, vibration can be transmitted to the four resonance regions 10 through the sound tunnels and produce resonance, which can significantly improve the tone in the bass region and the treble region.

[0060] Preferably, the diaphragm 6 is divided into a high-frequency region 6a in the upper section, a medium-frequency region 6b in the middle section, and a bass region 6c in the lower section according to the sound frequency; the wall thickness of the diaphragm 6 gradually increases from the mouth to the inside (i.e. from top to bottom in Figure 2 the drawing), and the wall thickness of the bass region 6c is greater than that of the medium-frequency region 6b, and the wall thickness of the medium-frequency region 6b is greater than that of the high-frequency region 6a; the sound beam assembly 7 is located in the bass region 6c, which can further improve the central load of the diaphragm 6 and improve the bass tone and timbre.

[0061] The gap 11 is designed between the two arc-shaped sound beam members 7a, and the groove 9 is arranged in the gap 11. By the design, the vibration is transmitted through the sound tunnel, and the vibration response rate of the diaphragm 6 is improved.

[0062] Preferably, the center line of the sound beam assembly 7 in the up-down direction is overlapped with the center line of the diaphragm 6 in the up-down direction.

[0063] Each groove 9 is an arc-shaped groove, which can reduce the thickness of the diaphragm 6 and avoid affecting the resonance and vibration of the diaphragm 6. A smooth transition surface is arranged between the outer end of the groove 9 and the surface of the diaphragm 6, so that the vibration is uniformly transmitted to the peripheral part of the diaphragm 6.

[0064] The following describes other embodiments and structural changes of the present application:

[0065] 1. In the above embodiments, the illustrated loudspeaker is only used for illustration, and its structure is not used to limit the protection scope of the present application. Other loudspeakers with similar structures that use the technical features of the present application should be covered within the protection scope of the present application.

[0066] 2. In the above embodiments, the number of the sound beam assemblies 7 is not limited to one set, and can be multiple sets arranged in parallel or other designs that can help to strengthen the load of the middle part of the diaphragm 6, which is easily understood and accepted by those skilled in the art.

[0067] 3. In the above embodiments, the groove 9 is an arc-shaped groove. However, the present application is not limited to this, and the groove can be designed in other shapes, such as V-shaped, U-shaped, W-shaped, etc. This is easily understood and accepted by those skilled in the art.

[0068] 4. In the above embodiments, the material of the diaphragm 6 is not limited to paper cone, and can be other materials, such as metal, carbon fiber, etc.

[0069] The above embodiments are only used to illustrate the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. A loudspeaker with a ring-shaped embedded sound beam, characterized in that: it comprises a voice coil (1), a magnet (2), a diaphragm (6) and a magnetic conductive structure; the diaphragm (6) is conical, with the upper end being outwardly flared and the lower end being inwardly tapered and corresponding to the voice coil (1); it further comprises a sound beam assembly (7) embedded in the diaphragm (6) and having a distance from the dust cover (8) of the voice coil (1); the sound beam assembly (7) comprises a plurality of arc-shaped sound beam members (7a), each of which is arranged in a ring around the center of the diaphragm in the horizontal direction, and has a gap (11) between adjacent arc-shaped sound beam members (7a); at least two grooves (9) are further provided on the diaphragm (6), each of which is radially arranged with the center of the diaphragm in the horizontal direction, thereby equally dividing the surface of the diaphragm (6) outside the sound beam assembly (7) into a plurality of resonance zones (10); the grooves (9) and the gaps (11) between the two arc-shaped sound beam members (7a) are matched one by one, and the grooves (9) are provided in the gaps (11); wherein the grooves (9) are recessed on the surface of the diaphragm (6) to form a sound tunnel; the diaphragm (6) comprises at least two film layers in the thickness direction, and the sound beam assembly (7) is embedded between the two adjacent film layers. The arc-shaped sound beam members (7a) of the sound beam assembly (7) are each in the form of a sheet. The sound beam assembly (7) is a metal sound beam assembly or a stone sound beam assembly. The diaphragm (6) is divided into an upper high-frequency zone (6a), a middle mid-frequency zone (6b) and a lower bass zone (6c) from the sound emitting frequency band; wherein the wall thickness of the diaphragm (6) gradually increases from the opening to the inside, the wall thickness of the bass zone (6c) is greater than that of the mid-frequency zone (6b), and the wall thickness of the mid-frequency zone (6b) is greater than that of the high-frequency zone (6a); The sound beam assembly (7) is located in the bass zone (6c).

2. The speaker with a ring-shaped internally embedded sound beam according to claim 1, characterized in that: The center line of the sound beam assembly (7) in the vertical direction overlaps the center line of the diaphragm (6) in the vertical direction.

3. The speaker with a ring-shaped internally embedded sound beam according to claim 1 or 2, characterized in that: Each of the grooves (9) is an arc-shaped groove.

4. The speaker with a ring-shaped internally embedded sound beam according to claim 1, characterized in that: A smooth transition surface is provided between the outer end of the groove (9) and the surface of the diaphragm (6). Each of the grooves (9) is connected with a ring-shaped groove (12) which is arranged around the dust cover (8). ​ 5. The speaker with a ring-shaped internally embedded sound beam according to claim 1, characterized in that: ​ 6. The speaker with a ring-shaped internally embedded sound beam according to claim 1, characterized in that: ​ 7. The speaker with a ring-shaped internally embedded sound beam according to claim 1, characterized in that: ​ 8. The speaker with a ring-shaped internally embedded sound beam according to claim 1, characterized in that: ​

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