An electronic product diaphragm with an embedded sound beam

Abstract

An electronic product diaphragm with an embedded sound beam includes a diaphragm body and a sound beam assembly; the sound beam assembly is embedded in the diaphragm body, and the sound beam assembly includes a plurality of sound beam members. Each sound beam member is arranged in a ring around the center of the diaphragm body in the horizontal direction, and there is a gap between two adjacent sound beam members; grooves are also provided on the diaphragm body, and each groove is arranged radially, dividing the surface of the diaphragm body into multiple resonance regions; the grooves are in one-to-one alignment and cooperation with the gaps between the two sound beam members, and the grooves penetrate through the gaps; the grooves are recessed on the surface of the diaphragm body to form sound tunnels. By embedding the sound beam assembly in the diaphragm body of the diaphragm, the present invention not only facilitates the thinning of the product, but also improves the process implementation and product stability, while ensuring the sound quality and timbre, and can be applied to various electronic products involving diaphragms.

Description

Technical Field

[0001] The present invention relates to a diaphragm, and more particularly to a diaphragm for an electronic product with an embedded sound beam, and the electronic product involves various types of loudspeakers, microphones and other electronic products related to diaphragms. Background Art

[0002] The diaphragm is an important sound - producing component in electronic products such as loudspeakers. As Figure 1 described, a traditional loudspeaker usually consists of structures such as a voice coil 1, a magnet 2, a magnetic conductive plate 3, a magnetic conductive column 4, and a diaphragm 5 (i.e., a paper cone). When the loudspeaker is working, an amplifier outputs currents of different magnitudes, which are converted into sound waves through frequency waves, and the output energy is increased by the drive of power. Under the action of the magnetic field, the voice coil 1 moves. At the same time, the voice coil 1 is connected to the diaphragm 5 and drives the diaphragm 5 to vibrate. Then, the vibration of the diaphragm 5 pushes the air, thereby generating sound.

[0003] The common problems of traditional loudspeakers are as follows: When a loudspeaker emits sound, there is an inherent resonance frequency. Beyond a certain range of the resonance frequency region, the high - pitched area cannot be bright enough, and the low - pitched area is not thick and mellow enough. The bass must be realized by a dedicated bass loudspeaker, and the treble must be realized by a dedicated treble loudspeaker, that is, the timbre is proportional to the number of loudspeakers, and high - quality timbre across the entire frequency band cannot be achieved by a single loudspeaker. The main reason is that the current loudspeaker diaphragms cannot meet the good broadband vibration from the high - pitched area to the low - pitched area, that is, they cannot simultaneously adapt to the resonance and vibration of relatively wide frequency changes in the high - pitched area, mid - pitched area, and low - pitched area. In summary, the structural design of traditional loudspeakers is unreasonable, which is not conducive to the diaphragm to play a good sound wave vibration from the high - pitched area to the low - pitched area. If high - quality sound performance for appreciation is to be achieved, multiple loudspeakers with different frequency bands need to be combined, that is, achieved through a component stereo, and this usually has a high price, which is not conducive to expanding the market. In addition, the volume of a component stereo is usually large, requiring more placement space and having a high energy demand.

[0004] To solve the above problems, the applicant applied for a Chinese patent "A Full - Band High - Quality Sound Loudspeaker with a Sound Beam and a Sound Tunnel" on August 19, 2020, with the patent number 202021740094.3. By setting a sound beam assembly at a position near the central area on the surface of the diaphragm, since the bass has a larger amplitude and lower frequency than the treble, 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 area of the diaphragm. Strengthening the load intensity of the central area of the diaphragm plays an important role in improving the timbre and sound quality of the low - pitched area. However, the above - mentioned exposed setting of the sound beam also has the following areas to be improved:

[0005] First, after the sound beam is combined on the surface of the diaphragm, the total thickness of the two is relatively large, which is not conducive to the thin - form requirement of the product;

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

[0007] Third, since the diaphragm is a vibrating component during operation, there is a possibility that the sound beam may become loose or fall off after long-term operation, directly affecting the service life of the product.

[0008] Fourth, most traditional sound beam assembly processes use glue to bond the sound beam components to the surface of the diaphragm. This places high requirements on the amount of glue used and the dispensing position. Excessive or insufficient glue usage or deviation in the dispensing position will have an adverse effect on the sound quality of the product.

[0009] Therefore, how to solve the deficiencies of the above-mentioned existing technologies has become the subject to be studied and solved in the present invention. Summary of the Invention

[0010] The object of the present invention is to provide a diaphragm for an electronic product with an embedded sound beam.

[0011] To achieve the above object, the technical solution adopted by the present invention is:

[0012] A diaphragm for an electronic product with an embedded sound beam, comprising a membrane body and a sound beam assembly;

[0013] The sound beam assembly is embedded in the membrane body. The sound beam assembly includes a plurality of sound beam members, and each of the sound beam members is arranged in a ring around the center of the membrane body in the horizontal direction, and there is a gap between adjacent two of the sound beam members;

[0014] At least two grooves are further provided on the membrane body, and each of the grooves is arranged radially with respect to the center of the membrane body in the horizontal direction, thereby equally dividing the surface of the membrane body outside the sound beam assembly into multiple resonance regions; the grooves are in one-to-one alignment and cooperation with the gaps between the two sound beam members, and the grooves penetrate through the gaps;

[0015] Wherein, the grooves are recessed on the surface of the membrane body to form sound tunnels.

[0016] 1. In the above solution, each of the grooves is evenly arranged radially with respect to the center of the membrane body in the horizontal direction, which helps to quickly transmit vibrations through the radially arranged sound tunnels (i.e., tunnels for sound) formed by the grooves to the periphery of the membrane body.

[0017] 2. In the above solution, the grooves penetrate through the gaps. With this design, it is beneficial to transmit vibrations through the sound tunnels, thereby being more conducive to improving the vibration response rate of the diaphragm.

[0018] 3. A further technical solution is that each of the sound beam members of the sound beam assembly can be an arc-shaped sound beam member and is in the shape of a thin sheet.

[0019] 4. Further technical solution: The film body includes at least two film layers in its thickness direction, and the sound beam assembly is embedded between two adjacent film layers.

[0020] 5. Further technical solution: The sound beam assembly is a metal sound beam assembly or a stone sound beam assembly, and can also be made of other high-density materials, aiming to provide sufficient mass for the sound beam assembly to ensure that it can strengthen the load intensity of the central area of the diaphragm.

[0021] 6. Further technical solution: The film body is divided into a high-frequency area in the upper section, a mid-frequency area in the middle section, and a low-frequency area in the lower section from the audio frequency range; wherein, the wall thickness of the film body gradually thickens from the outside to the inside, the wall thickness of the low-frequency area is greater than that of the mid-frequency area, and the wall thickness of the mid-frequency area is greater than that of the high-frequency area; the sound beam assembly is located in the low-frequency area.

[0022] With this design, by setting the thicker low-frequency area close to the voice coil of the product, the low-frequency vibration with lower frequency and larger amplitude can emit a more mellow and round bass in the low-frequency area of the film body; by setting the thinner high-frequency area away from the voice coil, the high-frequency vibration with higher frequency and smaller amplitude can emit a more transparent and bright high pitch in the high-frequency area of the film body, thereby effectively improving the tone quality of the product (such as a speaker) in the full frequency range.

[0023] 7. Further technical solution: The center line of the sound beam assembly in the up-down direction coincides with the center line of the film body in the up-down direction to improve the sound quality and tone.

[0024] 8. Further technical solution: Each of the grooves can be an arc-shaped groove, which can minimize the sudden change in thickness of the film body and avoid affecting the resonance and vibration of the film body.

[0025] 9. Further technical solution: A smooth transition surface is provided between the outer end of the groove and the surface of the film body.

[0026] Compared with the prior art, the working principle and advantages of the present invention are as follows:

[0027] 1. The sound beam assembly of the present invention is embedded in the diaphragm, reducing the total thickness of the two, which is beneficial to the thinning of the product, and can further reduce the thickness of the sound beam assembly to meet higher thinning requirements.

[0028] 2. The present invention reduces the requirements for the processing technology through the design of embedding the sound beam assembly. During processing, the sound beam assembly is first placed on the lower film layer of the diaphragm, and then another film layer is laminated above the sound beam assembly to achieve the embedding of the sound beam assembly, which helps to reduce the process cost.

[0029] 3. The embedded design of the sound beam component in the present invention can ensure that the sound beam component will not become loose even after the diaphragm has been working for a long time, and further avoid the possibility of falling off, thus ensuring the service life of the product.

[0030] 4. The embedded design of the sound beam component in the present invention eliminates the related operations of glue bonding, thus avoiding many problems existing in the traditional assembly process due to the use of glue.

[0031] 5. By embedding the sound beam component in the diaphragm in the present invention, 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. Strengthening the strength of the central area of the diaphragm plays an important role in improving the timbre and sound quality of the bass area. Since the thickness of the diaphragm has a thickness gradient structure that is thick in the central area and thin in the surrounding areas (i.e., thin on top and thick on the bottom), the strength of the central area of the diaphragm is strengthened, and relatively speaking, the thickness difference between the central area and the peripheral edge area of the diaphragm is also changed, which can also play a beneficial role in improving the timbre and sound quality of the treble area.

[0032] 6. The present invention can achieve the improvement of timbre by adjusting the amplitude at the original frequency.

[0033] 7. By providing radial grooves on the surface of the diaphragm in the present invention, the radial grooves actually form radial sound tunnels on the diaphragm, and the area close to the voice coil converges the vibration of the voice coil, and then quickly transmits it to the peripheral edge of the diaphragm through the radial sound tunnels (i.e., the tunnels of sound), which plays a key role in improving the timbre and sound quality of the treble area.

[0034] 8. By designing the sound beam into a sound beam component in the present invention, especially by providing a gap between the two sound beam members, it is more conducive to transmitting vibration through the sound tunnel through the gap, so as to be more conducive to the resonance and rapid vibration response of the diaphragm.

[0035] 9. Through the design of the sound beam component and the radial grooves in the present invention, N resonance areas equal to the number of grooves are equally divided on the diaphragm. When the product works, the vibration of the voice coil is first transmitted to the central area of the diaphragm, and then transmitted to each resonance area through the sound tunnel, and resonance and vibration are generated, thereby amplifying the vibration of the external sound source into the resonance sound of the diaphragm. Each resonance area can generate a sound wave quantity, plus an original sound wave quantity, totaling N + 1 sound wave quantities. The sound wave quantity is the number of sound waves, and the sound wave quantity directly affects the timbre, penetration and volume of the diaphragm. Therefore, the design of the present invention can significantly improve the timbre of the treble area and the bass area, and increase the penetration and volume of the treble area and the bass area.

[0036] 10. The present invention can be applied not only to various types of speakers, such as conical (bowl-shaped), rectangular, and planar speakers, but also to other electronic products involving diaphragms, such as microphones. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Attached Figure 1 is a schematic structural diagram of a traditional loudspeaker;

[0038] Attached Figure 2 is a top view schematic diagram of the diaphragm in the embodiment of the present invention;

[0039] Attached Figure 3 is Figure 2 a schematic cross-sectional view taken along line A-A in

[0040] Attached Figure 4 is Figure 3 an enlarged view of part B in

[0041] In the above drawings: 1. Voice coil; 2. Magnet; 3. Magnetic conductive plate; 4. Magnetic conductive column; 5. Diaphragm; 6. Diaphragm body; 6a. High-frequency area; 6b. Mid-frequency area; 6c. Low-frequency area; 7. Sound beam assembly; 7a. Arc-shaped sound beam member; 8. Dust cover; 9. Groove; 10. Resonance area; 11. Gap; 12. Ring-shaped groove. Specific embodiments

[0042] The present invention will be further described below in conjunction with the drawings and embodiments:

[0043] Embodiment: The present invention will be clearly described below with reference to the drawings and detailed description. After understanding the embodiments of the present invention, any person skilled in the art can make changes and modifications to the techniques taught by the present invention without departing from the spirit and scope of the present invention.

[0044] Regarding the use of "connected" or "arranged" in this article, it can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, and can also refer to two or more components or devices operating or acting on each other.

[0045] Regarding the use of "comprising", "including", "having", etc. in this article, they are all open-ended terms, meaning including but not limited to.

[0046] Regarding the terms used in this article, unless otherwise specified, they generally have their ordinary meanings in the art, in the context of this case, and in the specific context. Some of the terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art regarding the description of this case.

[0047] Regarding the use of "upper" and "lower" in this article as directional terms, in the present invention, they are only used to illustrate the positional relationship between the structures and do not limit the protection scope of the present invention and the specific direction during actual implementation.

[0048] Refer to Attached Figures 2 - 4As shown in the figure, a diaphragm of an electronic product with an embedded sound beam can be applied to the speaker shown in the figure. The speaker includes a voice coil 1, a magnet 2, a diaphragm body 6, and a magnetic conduction structure. The magnetic conduction structure can be composed of a magnetic conduction plate 3 and a magnetic conduction column 4. The diaphragm body 6 is conical, with an outwardly expanding open shape at the upper end and a retracted lower end corresponding to the voice coil 1.

[0049] It further includes a sound beam assembly 7. The sound beam assembly 7 is embedded in the diaphragm body 6 and has a distance from the dust cover 8 of the voice coil 1. The sound beam assembly 7 includes a plurality of arc-shaped sound beam members 7a. Each of the arc-shaped sound beam members 7a is arranged in a ring around the center of the diaphragm in the horizontal direction, and there is a gap 11 between adjacent two arc-shaped sound beam members 7a.

[0050] Preferably, each of the arc-shaped sound beam members 7a of the sound beam assembly 7 is in the shape of a thin sheet.

[0051] At least two grooves 9 are further provided on the diaphragm body 6. The grooves 9 are recessed on the surface of the diaphragm body 6 to form sound tunnels. Each of the grooves 9 is radially arranged with the center of the diaphragm in the horizontal direction as a reference, and thus the surface of the diaphragm body 6 outside the sound beam assembly 7 is equally divided into multiple resonance regions 10. The grooves 9 are in one-to-one alignment and cooperation with the gaps 11 between two arc-shaped sound beam members 7a, and the grooves 9 penetrate through the gaps 11. Each of the grooves 9 is connected to an annular groove 12, and the annular groove 12 is arranged around the dust cover 8.

[0052] Among them, the diaphragm body 6 may include at least two film layers in its thickness direction, and the sound beam assembly 7 is embedded between adjacent two film layers.

[0053] By embedding the sound beam assembly 7 in the diaphragm body 6 and at the same time setting the sound beam assembly 7 in the shape of a sheet, 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 requirements for the processing technology. During specific implementation, the sound beam assembly 7 can be first placed on the lower film layer of the diaphragm body 6, and then another film layer is laminated above the sound beam assembly 7 to achieve the embedding of the sound beam assembly 7, which helps to reduce the process cost.

[0054] In addition, by embedding the sound beam assembly 7 in the diaphragm body 6, it can be ensured that even after the diaphragm body 6 works for a long time, the sound beam assembly 7 will not become loose, and there is no possibility of falling off, ensuring the service life and sound quality performance of the product.

[0055] By embedding the sound beam assembly 7 in the diaphragm body 6, since the amplitude of the bass is larger and the frequency is lower than that of the treble, the bass resonance is concentrated in the central area of the diaphragm body 6 close to the voice coil 1, and the treble resonance is concentrated in the peripheral edge area of the diaphragm body 6, strengthening the load intensity of the central area of the diaphragm body 6, which plays an important role in improving the timbre and sound quality of the bass area. Since the diaphragm body 6 has a thickness-varying structure with a thick central area and a thin periphery (i.e., a design with a thin upper part and a thick lower part), the strength of the central area of the diaphragm body 6 is strengthened, and relatively speaking, the thickness difference between the central area and the peripheral edge area of the diaphragm body 6 is also changed, which can also play a beneficial role in improving the timbre and sound quality of the treble area.

[0056] 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, aiming to provide the sound beam assembly 7 with sufficient mass to ensure that it can strengthen the load intensity of the central area of the diaphragm body 6.

[0057] By providing radial grooves 9 on the diaphragm body 6, the radial grooves 9 actually form radial sound tunnels on the surface of the diaphragm body 6, and the area close to the voice coil 1 collects the vibration of the voice coil 1, and then quickly transmits it to the peripheral edge of the diaphragm body 6 through the radial sound tunnels (i.e., the tunnels of sound), which plays a key role in improving the timbre and sound quality of the treble area. At the same time, by equally dividing four resonance areas 10 on the diaphragm body 6, the vibration can be transmitted to these four resonance areas 10 through the sound tunnels and generate resonance, which can significantly improve the timbre of the bass area and the treble area.

[0058] Preferably, the diaphragm body 6 is divided into a treble area 6a in the upper section, a midrange area 6b in the middle section, and a bass area 6c in the lower section from the sound frequency band; the wall thickness of the diaphragm body 6 gradually thickens from the opening to the inside (i.e., Figure 2 from top to bottom in ), the wall thickness of the bass area 6c is greater than that of the midrange area 6b, and the wall thickness of the midrange area 6b is greater than that of the treble area 6a; the sound beam assembly 7 is located in the bass area 6c, which can further increase the central load of the diaphragm body 6 and improve the bass sound quality and timbre.

[0059] Among them, a gap 11 is designed between the two arc-shaped sound beam members 7a, and the groove 9 penetrates through the gap 11. With this design, it is beneficial to transmit vibration through the sound tunnel, thereby being more conducive to improving the vibration response rate of the diaphragm body 6.

[0060] Preferably, the center line of the sound beam assembly 7 in the up-down direction coincides with the center line of the diaphragm body 6 in the up-down direction.

[0061] Each of the grooves 9 can be an arc-shaped groove, which can minimize the sudden change in thickness of the diaphragm body 6 and avoid affecting the resonance and vibration of the diaphragm body 6. Among them, a smooth transition surface is provided between the outer end of the groove 9 and the surface of the diaphragm body 6. So that the vibration can be transmitted to the periphery of the diaphragm body 6 more evenly.

[0062] The following describes other implementation scenarios and structural changes of the present invention as follows:

[0063] 1. In the above embodiments, the illustrated loudspeaker is only for illustrative purposes, and its structure is not intended to limit the protection scope of the present invention. Other similar products that adopt the technical features of the present invention should be covered within the protection scope of the present invention.

[0064] 2. In the above embodiments, the number of the sound beam assemblies 7 is not limited to one group, and it can also be multiple groups arranged in parallel or other designs that help to strengthen the load in the middle of the diaphragm 6, which is easily understood and accepted by those skilled in the art.

[0065] 3. In the above embodiments, the groove 9 is an arc-shaped groove. However, the present invention is not limited thereto, and the groove can be designed into other shapes, such as concave structures like V-shaped, U-shaped, W-shaped, etc. This is easily understood and accepted by those skilled in the art.

[0066] 4. In the above embodiments, the material of the diaphragm 6 is not limited to a paper cone, and it can also be other materials, such as metal, carbon fiber, etc.

[0067] The above embodiments are only for explaining the technical concept and features of the present invention, and their purpose is to enable those familiar with this technology to understand the content of the present invention and implement it accordingly, and cannot be used to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. An electronic product diaphragm with an embedded sound beam, characterized in that: It includes a diaphragm body (6) and a sound beam assembly (7); The sound beam assembly (7) is embedded in the diaphragm body (6). The sound beam assembly (7) includes a plurality of sound beam members (7a). Each of the sound beam members (7a) is arranged in a ring around the center of the diaphragm in the horizontal direction, and there is a gap (11) between two adjacent sound beam members (7a); At least two grooves (9) are further provided on the diaphragm body (6), and each of the grooves (9) is radially arranged with the center of the diaphragm in the horizontal direction as a reference, thereby equally dividing the surface of the diaphragm body (6) outside the sound beam assembly (7) into multiple resonance regions (10); The groove (9) is in one-to-one alignment and cooperation with the gap (11) between two sound beam members (7a), and the groove (9) penetrates through the gap (11); Wherein, the groove (9) is recessed on the surface of the diaphragm body (6) to form a sound tunnel.

2. The diaphragm of the electronic product with an embedded sound beam according to claim 1, wherein: The diaphragm body (6) is in a conical bowl shape or a planar shape.

3. The diaphragm of the electronic product with an embedded sound beam according to claim 1, wherein: Each of the sound beam members (7a) of the sound beam assembly (7) is in a thin sheet shape.

4. The diaphragm of the electronic product with an embedded sound beam according to claim 1, wherein: The sound beam member (7a) is in an arc shape.

5. The diaphragm of the electronic product with an embedded sound beam according to claim 1, characterized in that: The diaphragm body (6) includes at least two membrane layers in its thickness direction, and the sound beam assembly (7) is embedded between two adjacent membrane layers.

6. The diaphragm of the electronic product with an embedded sound beam according to claim 1, wherein: The sound beam assembly (7) is a metal sound beam assembly or a stone sound beam assembly.

7. The diaphragm of an electronic product with an embedded sound beam according to claim 1, characterized in that: The diaphragm body (6) is divided into a high-frequency region (6a) in the upper section, a mid-frequency region (6b) in the middle section, and a low-frequency region (6c) in the lower section from the audio frequency range; Wherein, the wall thickness of the diaphragm body (6) gradually increases from the opening to the inside. The wall thickness of the low-frequency region (6c) is greater than that of the mid-frequency region (6b), and the wall thickness of the mid-frequency region (6b) is greater than that of the high-frequency region (6a); The sound beam assembly (7) is located in the low-frequency region (6c).

8. The diaphragm of the electronic product with an embedded sound beam according to claim 1, characterized in that: The center line of the sound beam assembly (7) in the up and down direction overlaps with the center line of the diaphragm body (6) in the up and down direction.

9. The diaphragm of an electronic product with an embedded sound beam according to claim 1, wherein: Each of the grooves (9) is an arc-shaped groove.

10. The diaphragm of the electronic product with an 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 body (6).

Images