CN212785836U

CN212785836U - Bowl-shaped loudspeaker with sound tunnel

Info

Publication number: CN212785836U
Application number: CN202021739395.4U
Authority: CN
Inventors: 金海鸥; 吴念博; 何新喜; 朱信智; 李碧英; 杨萍
Original assignee: Suzhou Liyue Musical Instrument Co Ltd
Current assignee: Suzhou Liyue Musical Instrument Co Ltd
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2021-03-23
Anticipated expiration: 2030-08-19

Abstract

A bowl-shaped loudspeaker with a sound tunnel comprises a voice coil and a bowl-shaped vibrating diaphragm; the upper end of the bowl-shaped vibrating diaphragm is in an outward-expanding opening shape, and the bottom of the lower end of the bowl-shaped vibrating diaphragm is connected and positioned with the upper end of the voice coil; at least two grooves are arranged on the surface of at least one side of the bowl-shaped vibrating diaphragm, and the grooves are radially distributed to equally divide the surface of the bowl-shaped vibrating diaphragm positioned on the outer side of the bridge type sound beam into a plurality of resonance areas; the groove is concavely arranged on the surface of the bowl-shaped vibrating diaphragm to form a sound tunnel. The utility model discloses change bowl-shaped vibrating diaphragm into present standard vibration mode by free vibration mode in the past, solved the speaker high pitch area from the angle of vibration, sympathetic response, sound production and bright and can not come out, and the low pitch area is muddy and mellow not enough problem.

Description

Bowl-shaped loudspeaker with sound tunnel

Technical Field

The utility model relates to a bowl shape speaker (concave spherical surface), concretely relates to bowl shape speaker of voiced tunnel.

Background

A speaker is a device for converting an electric signal into an acoustic signal, in which a bowl-shaped speaker is commonly used in a high power apparatus such as a car audio, and is characterized by a prominent bass effect. As shown in fig. 1 and 2, a conventional bowl-shaped speaker generally includes a bowl-shaped diaphragm 1, a voice coil 2, a magnet, and a magnetic structure (not shown), wherein the bowl-shaped diaphragm 1 is made of a hard material, and is usually made of a metal material. When the bowl-shaped loudspeaker works, currents with different magnitudes are output by the amplifier and converted into sound waves through frequency waves, the output energy is improved through the pushing of power, the voice coil 2 moves under the action of a magnetic field, meanwhile, the voice coil 2 is connected to the bowl-shaped vibrating diaphragm 1 and drives the bowl-shaped vibrating diaphragm 1 to vibrate, and then air is pushed through the vibration of the bowl-shaped vibrating diaphragm 1, so that sound is produced.

The problems common to conventional bowl-shaped speakers are: the bowl-shaped loudspeaker has a natural resonant frequency during sounding, and after the bowl-shaped loudspeaker exceeds a certain range of a resonant frequency region, a high pitch region cannot be bright, a low pitch region is not mellow enough, and particularly, the tone quality of a middle pitch region and a high pitch region is not good enough. Bass must be realized through special bass bowl shape speaker, and high pitch must be realized through special high pitch bowl shape speaker, and the tone quality is directly proportional with the quantity of speaker, can not realize the high-quality tone quality of full frequency channel through single bowl shape speaker. The reason for this is that the conventional bowl-shaped loudspeaker diaphragm cannot satisfy good wide-band vibration from a high-pitch region to a low-pitch region, i.e., cannot simultaneously adapt to wide frequency variation resonance and vibration in the high-pitch region, the middle-pitch region and the low-pitch region. In summary, the conventional bowl-shaped speaker has an unreasonable structural design, which is not favorable for the diaphragm to perform sound wave vibration from the high-pitched area to the low-pitched area.

Therefore, how to solve the above-mentioned deficiencies of the prior art is a problem to be solved by the present invention.

Disclosure of Invention

The utility model aims at providing a take bowl shape speaker of sound tunnel.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

a bowl-shaped loudspeaker with a sound tunnel comprises a voice coil and a bowl-shaped vibrating diaphragm; the upper end of the bowl-shaped vibrating diaphragm is in an outward-expanding opening shape, and the bottom of the lower end of the bowl-shaped vibrating diaphragm is connected and positioned with the upper end of the voice coil;

at least two grooves are arranged on the surface of at least one side of the bowl-shaped vibrating diaphragm, and the grooves are radially arranged by taking the center of the loudspeaker in the horizontal direction as a reference, so that the surface of the bowl-shaped vibrating diaphragm is equally divided into a plurality of resonance areas;

the groove is concavely arranged on the surface of the bowl-shaped vibrating diaphragm to form a sound tunnel.

The relevant content in the above technical solution is explained as follows:

1. in the above scheme, the grooves are uniformly arranged in a radial shape with the center of the bowl-shaped loudspeaker in the horizontal direction as a reference, which is helpful for rapidly transmitting the vibration of the voice coil to the periphery of the diaphragm through the radial sound tunnel (i.e. the sound tunnel) formed by the grooves.

2. In the scheme, the bowl-shaped vibrating diaphragm is divided into a high-sound area of an outer section, a middle-sound area of a middle section and a low-sound area of an inner section from a sound frequency range; the wall thickness of the bowl-shaped vibrating diaphragm is gradually increased from the opening to the inside, the wall thickness of a low sound area is larger than that of a middle sound area, and the wall thickness of the middle sound area is larger than that of a high sound area;

by the design, the thicker bass region is arranged at a position close to the voice coil, so that low-frequency vibration with lower frequency and larger amplitude can generate more muddy and mellow bass in the bass region of the bowl-shaped vibrating diaphragm; through setting up thinner high pitch region in the position of keeping away from the voice coil loudspeaker voice coil, can make the frequency higher, the less high-frequency vibration of amplitude send more penetrating, bright high pitch at the high pitch region of bowl shape vibrating diaphragm, and then make bowl shape speaker all obtain effectively promoting at tone quality, the tone quality that full frequency channel produced.

4. In the above scheme, each the slot is the arc wall, can be so that bowl shape vibrating diaphragm minimize thickness sudden change in thickness, avoids influencing the sympathetic response and the vibration of vibrating diaphragm.

5. In the above scheme, the length of the groove is smaller than the width of the bowl-shaped vibrating diaphragm, and smooth transition surfaces are arranged between the two outer ends of the groove and the surface of the bowl-shaped vibrating diaphragm.

The utility model discloses a theory of operation and advantage as follows:

the utility model relates to a bowl-shaped loudspeaker with a sound tunnel, which comprises a voice coil and a bowl-shaped vibrating diaphragm; the upper end of the bowl-shaped vibrating diaphragm is in an outward-expanding opening shape, and the bottom of the lower end of the bowl-shaped vibrating diaphragm is connected and positioned with the upper end of the voice coil; at least two grooves are arranged on the surface of at least one side of the bowl-shaped vibrating diaphragm, and the grooves are radially distributed to equally divide the surface of the bowl-shaped vibrating diaphragm into a plurality of resonance areas; the groove is concavely arranged on the surface of the bowl-shaped vibrating diaphragm to form a sound tunnel.

Compared with the prior art, can't compromise the problem that high, well, bass district possess good sympathetic response tone simultaneously in order to solve current bowl shape speaker, the utility model discloses bowl shape vibrating diaphragm design in to current bowl shape speaker, especially bowl shape speaker has improved. Specifically, a radial groove is formed in the surface of the bowl-shaped diaphragm, and a radial sound tunnel is formed in the radial groove in the surface of the bowl-shaped diaphragm.

The utility model discloses to present bowl shape speaker high pitch area bright not come out, and the not enough problem of low pitch area muddy and mellow, carried out deep discussion and research to the design and the vocal mechanism of bowl shape speaker, found out the not good leading reason of tone quality in present bowl shape speaker high pitch area and low pitch area because the unreasonable institute of bowl shape vibrating diaphragm design. In view of the above, the inventor has broken the constraint that bowl shape speaker constitutes the design in the past, and the courage has proposed the utility model discloses an improve design, this kind of improve design changes bowl shape vibrating diaphragm into present standard vibration mode by the free vibration mode in the past, has solved bowl shape speaker high pitch area from the angle of vibration, sympathetic response, sound production and has not come out, and the bass region is muddy and mellow not enough problem, practice proves that this improves design has outstanding substantive characteristics and apparent technological progress to obvious technological effect has been obtained.

Because of the application of above-mentioned technical scheme, the utility model discloses compare with the vibrating diaphragm of current bowl shape speaker and have following advantage and effect:

1. the utility model discloses seted up radial slot on bowl-shaped vibrating diaphragm surface, this radial slot actually forms radial sound tunnel on bowl-shaped vibrating diaphragm, and the region that is close the voice coil loudspeaker voice coil collects the vibration of voice coil loudspeaker voice coil, and the radial sound tunnel of rethread (the tunnel of sound promptly) is rapidly to the marginal transmission all around of bowl-shaped vibrating diaphragm, and this has played the key role to the tone quality and the tone quality that improve the high voice zone.

2. The utility model discloses a design of radial slot, the equal N piece resonance area the same with slot quantity of partition on the vibrating diaphragm. When the loudspeaker works, the vibration of the voice coil is firstly transmitted to the central area of the bowl-shaped vibrating diaphragm, then transmitted to each resonance area through the sound tunnel, and resonates and vibrates, so that the vibration of an external sound source is amplified to be resonated sound of the vibrating diaphragm. Each resonance area can generate an acoustic wave quantity, and an acoustic wave quantity is added to the acoustic wave quantity to form N +1 acoustic wave quantities. The sound wave quantity is the number of sound waves, and the sound wave quantity directly influences the tone quality, the penetrating power and the volume of the diaphragm. Therefore, the design of the invention can obviously improve the timbre of the high-tone area and the low-tone area and increase the penetrating power and the volume of the high-tone area and the low-tone area.

3. The utility model discloses an upper surface of bowl-shaped vibrating diaphragm can be located to the slot, also can locate the lower surface of bowl-shaped vibrating diaphragm, still can set up in the upper and lower two surfaces of bowl-shaped vibrating diaphragm simultaneously.

Drawings

FIG. 1 is a top view of a conventional bowl-shaped speaker;

fig. 2 is a cross-sectional view of a conventional bowl-shaped speaker;

FIG. 3 is a top view of the present invention;

FIG. 4 is a sectional view taken along line A-A of FIG. 3;

fig. 5 is a schematic view illustrating a bridge-type sound beam disposed on a lower surface of a bowl-shaped diaphragm according to an embodiment of the present invention;

fig. 6 is a schematic view of the bridge-type sound beam according to the embodiment of the present invention, which is simultaneously disposed on the upper and lower surfaces of the bowl-shaped diaphragm.

In the above drawings: 1. a bowl-shaped diaphragm; 2. a voice coil; 3. a bowl-shaped diaphragm; 4. a bridge-type sound beam; 5. a trench; 6. a bridge opening; 7. a resonance region.

Detailed Description

The invention will be further described with reference to the following drawings and examples:

example (b): the present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the disclosure may be shown and described, and which, when modified and varied by the techniques taught herein, can be made by those skilled in the art without departing from the spirit and scope of the disclosure.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms "a", "an", "the" and "the", as used herein, also include the plural forms.

As used herein, "connected" or "positioned" refers to two or more elements or devices being in direct physical contact with each other or in indirect physical contact with each other, and may also refer to two or more elements or devices being in operation or acting on each other.

As used herein, the terms "comprising," "including," "having," and the like are open-ended terms that mean including, but not limited to.

As used herein, the term (terms), unless otherwise indicated, shall generally have the ordinary meaning as commonly understood by one of ordinary skill in the art, in this written description and in the claims. Certain words used to describe the disclosure are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the disclosure.

The terms "upper" and "lower" used herein are directional terms, and are used only for describing the positional relationship between the structures, and are not intended to limit the protection schemes and the actual implementation directions.

Referring to fig. 3 and 4, a bowl-shaped speaker with a sound tunnel includes a voice coil 2 and a bowl-shaped diaphragm 3; the upper end of the bowl-shaped vibrating diaphragm 3 is in an outward-expanding opening shape, and the bottom of the lower end of the bowl-shaped vibrating diaphragm is connected and positioned with the upper end of the voice coil 2.

The bowl-shaped vibrating diaphragm 3 is provided with a bridge type sound beam 4, the bridge type sound beam 4 is annular and is erected at the bottom of the upper surface of the bowl-shaped vibrating diaphragm 3, and a distance is reserved between the bridge type sound beam 4 and the top of the voice coil 2 in the horizontal direction of the bowl-shaped loudspeaker.

Through set up bridge type sound roof beam 4 on bowl shape vibrating diaphragm 3's upper surface, because the relative high pitch amplitude of bass is big, the frequency is low, and the bass sympathetic response is concentrated on bowl shape vibrating diaphragm 3 and is close to the central zone of voice coil loudspeaker voice coil 2, and the high pitch sympathetic response is concentrated on the edge region all around of bowl shape vibrating diaphragm 3, strengthens bowl shape vibrating diaphragm 3 central zone intensity, has played the important function to improving bass district tone quality and tone quality. Because the thickness of the bowl-shaped vibrating diaphragm 3 is a thickness-gradually-changing structure (namely, the design of the thickness of the bowl-shaped vibrating diaphragm 3 is thin outside and thin inside), the strength of the central area of the bowl-shaped vibrating diaphragm 3 is enhanced, the thickness difference between the central area of the bowl-shaped vibrating diaphragm 3 and the peripheral edge area is relatively changed, and the bowl-shaped vibrating diaphragm also has a beneficial effect on improving the tone color and the tone quality of a high-pitch area.

Preferably, the bowl-shaped vibrating diaphragm 3 is divided into a high-sound area of an outer section, a middle-sound area of a middle section and a low-sound area of an inner section from a sound frequency range; the wall thickness of the bowl-shaped vibrating diaphragm 3 is gradually increased from the opening to the inside, the wall thickness of a low-sound area is larger than that of a middle-sound area, and the wall thickness of the middle-sound area is larger than that of a high-sound area; bridge type sound roof beam 4 is located bass region can further promote the middle part load of bowl shape vibrating diaphragm 3, promotes bass tone quality and tone quality.

At least two grooves 5 are arranged on the upper surface of the bowl-shaped vibrating diaphragm 3, and the grooves 5 are radially arranged by taking the center of the bowl-shaped loudspeaker in the horizontal direction as a reference, so that the surface of the bowl-shaped vibrating diaphragm 3 positioned on the outer side of the bridge-type sound beam 4 is equally divided into a plurality of resonance areas 7; each groove 5 crosses the bridge sound beam 4 in the horizontal direction of the bowl speaker, and is perpendicular to the bridge sound beam 4 in the longitudinal direction of the groove 5.

The groove 5 is concavely arranged on the upper surface of the bowl-shaped diaphragm 3 to form a sound tunnel.

By providing the radial groove 5 on the upper surface of the bowl-shaped diaphragm 3, the radial groove 5 actually forms the radial sound tunnel 10 on the inner side of the bowl-shaped diaphragm 3, and the region close to the voice coil 2 collects the vibration of the voice coil 2, and then the vibration is rapidly transmitted to the peripheral edge of the bowl-shaped diaphragm 3 through the radial sound tunnel 10 (i.e., a sound tunnel), which plays a key role in improving the timbre and sound quality of a high-pitched area. Meanwhile, four resonance areas 7 are equally divided on the bowl-shaped vibrating diaphragm 3, vibration can be transmitted to the four resonance areas 7 through a sound tunnel, resonance is generated, and the timbre of a bass area and a treble area can be obviously improved.

The bottom of bridge type sound roof beam 4 is equipped with bridge opening 6, and this bridge opening 6 runs through the setting in the width direction of bridge type sound roof beam 4, and the below of bridge opening 6 is uncovered and is corresponded slot 5. The sound beam is designed into a bridge type sound beam 4 structure, and particularly, a bridge opening 6 (a gap) is designed at one side of the sound beam, so that the bridge type sound beam 4 is like a bridge arch structure. When the bridge type sound beam 4 is erected on the sound tunnel, the vibration is transmitted through the sound tunnel more favorably, and the resonance and the quick vibration response of the bowl-shaped vibrating diaphragm 3 are more favorably realized.

Preferably, when the bowl-shaped diaphragm 3 is placed horizontally, the center line of the bridge-type sound beam 4 in the up-down direction overlaps with the center line of the bowl-shaped diaphragm 3 in the up-down direction.

Each groove 5 is an arc-shaped groove, so that the thickness of the bowl-shaped vibrating diaphragm 3 is reduced as much as possible, and the resonance and vibration of the bowl-shaped vibrating diaphragm 3 are prevented from being influenced. Wherein, the length of the groove 5 is smaller than the width of the bowl-shaped vibrating diaphragm 3, and smooth transition surfaces are arranged between the two outer ends of the groove 5 and the upper surface of the bowl-shaped vibrating diaphragm 3.

Other embodiments and structural changes of the present invention are described below as follows:

1. in the above embodiments, the illustrated bowl-shaped speaker is only used for illustration, the structure is not intended to limit the protection scope of the present invention, and other bowl-shaped speakers with similar structures should be covered by the protection scope of the present invention if the technical features of the present invention are adopted.

2. In the above embodiment, the bridge-type sound beam 4 is provided with the bridge-shaped opening 6, but the present invention is not limited thereto, and the bridge-shaped opening 6 may not be provided, or other structures similar to the bridge-shaped opening 6 may be provided to facilitate the transmission of the vibration through the sound tunnel, which is easily understood and accepted by those skilled in the art.

3. In the above embodiments, the number of the bridge-type sound beams 4 is not limited to one, and may be a plurality of parallel beams or other designs that help to strengthen the load in the middle of the bowl-shaped diaphragm 3, which is easily understood and accepted by those skilled in the art.

4. In the above embodiments, the bridge-type sound beam 4 and the groove 5 may be located on the upper surface of the bowl-shaped diaphragm 3 (as shown in fig. 4), may be located on the lower surface of the bowl-shaped diaphragm 3 (as shown in fig. 5), and may be disposed on both the upper and lower surfaces of the bowl-shaped diaphragm 3 (as shown in fig. 6).

5. In the above embodiment, the groove 5 is an arc-shaped groove. However, the present invention is not limited thereto, and the groove may be designed into other shapes, such as a V-shape, a U-shape, a W-shape, and other concave structures. As would be readily understood and accepted by those skilled in the art.

6. In the above embodiments, the material of the bowl-shaped diaphragm 3 is not limited to a metal material, and may be other high-strength materials, such as carbon fiber.

The utility model discloses to present bowl shape speaker high pitch area bright not come out, and the not enough problem of low pitch area muddy and mellow, carried out deep discussion and research to the design and the vocal mechanism of bowl shape speaker, found out the not good leading reason of tone quality in present bowl shape speaker high pitch area and low pitch area because the unreasonable institute of bowl shape vibrating diaphragm design. In view of the above, the inventor has broken the constraint that bowl shape speaker constitutes the design in the past, and the bold has proposed the utility model discloses an improve design, this kind of improve design changes bowl shape vibrating diaphragm into present standard vibration mode by the free vibration mode in the past, has solved bowl shape speaker highlight from the angle of vibration, sympathetic response, sound production and can not come out, and bass region muddy mellow and full not enough problem has improved the fidelity of each frequency channel sound, practice proves that this improves design has outstanding substantive characteristics and apparent technological progress to obvious technological effect has been obtained.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a bowl shape speaker of voiced tunnel which characterized in that:

comprises a voice coil (2) and a bowl-shaped vibrating diaphragm (3); the upper end of the bowl-shaped vibrating diaphragm (3) is in an outward-expanding opening shape, and the bottom of the lower end of the bowl-shaped vibrating diaphragm is connected and positioned with the upper end of the voice coil (2);

at least two grooves (5) are arranged on the surface of at least one side of the bowl-shaped vibrating diaphragm (3), and the grooves (5) are radially arranged by taking the center of the loudspeaker in the horizontal direction as a reference, so that the surface of the bowl-shaped vibrating diaphragm (3) is equally divided into a plurality of resonance areas (7);

the groove (5) is concavely arranged on the surface of the bowl-shaped diaphragm (3) to form a sound tunnel.

2. The bowl-shaped speaker with a sound tunnel of claim 1, wherein: the bowl-shaped vibrating diaphragm (3) is divided into a high-sound area of an outer section, a middle-sound area of a middle section and a low-sound area of an inner section from a sound-producing frequency band;

the wall thickness of the bowl-shaped vibrating diaphragm (3) is gradually increased from the opening to the inside, the wall thickness of a low sound area is larger than that of a middle sound area, and the wall thickness of the middle sound area is larger than that of a high sound area.

3. The bowl-shaped speaker with a sound tunnel of claim 1, wherein: each groove (5) is an arc-shaped groove.

4. The bowl-shaped speaker with a sound tunnel of claim 1, wherein: the length of the groove (5) is smaller than the width of the bowl-shaped vibrating diaphragm (3), and smooth transition surfaces are arranged between the two outer ends of the groove (5) and the surface of the bowl-shaped vibrating diaphragm (3).