CN221381177U - A coaxial linear speaker structure - Google Patents

Abstract

The utility model discloses a coaxial linear horn structure which comprises a support, a high-pitch part and a low-pitch part, wherein a first groove is formed in the middle of the support, a second groove is further formed in the periphery of the first groove, the high-pitch part comprises a small magnet arranged at the axis position of the first groove and a small voice coil distributed on the periphery of the small magnet, the low-pitch part comprises a large magnet arranged on the periphery of the small voice coil and a large voice coil distributed on the periphery of the large magnet, a damper is arranged at the position of the support on the periphery wall of the second groove, the small voice coil and the large voice coil are arranged at the position of the lower wall of the damper, a small diaphragm and a ring diaphragm are respectively arranged on the upper wall of the damper, the small diaphragm and the high-pitch part enclose Gao Yinqiang, and the ring diaphragm and the low-pitch part enclose a low-pitch cavity. The bass part and the treble part adopt the same-plane coaxial design, so that the coaxial loudspeaker can be as thin as possible, the effect of the coaxial loudspeaker can be achieved, and the structural thickness of one loudspeaker is not exceeded; the coaxial horn has the performance advantages of the conventional coaxial horn, and simultaneously has the ultra-thin thickness of a single horn.

Description

A coaxial linear speaker structure

Technical Field

The utility model relates to the field of loudspeakers, in particular to a coaxial linear loudspeaker structure.

Background technique

A coaxial speaker is a speaker that has both treble and bass, a double-edged sword. That is, two speakers are installed on the same axis to reproduce the treble and mid-bass respectively. Moreover, the two speakers must overlap on the diaphragm surface. Since their physical positioning is close to a point sound source, the sound field positioning of the reproduced music is ideal.

However, the existing coaxial speakers have the following problems: 1. They are relatively thick, so their installation suitability is limited; 2. Their appearance is poor, so coaxial speakers are generally covered with a shell as a whole, which correspondingly affects their sound quality.

Utility Model Content

The main purpose of the utility model is to provide a coaxial linear speaker structure, aiming to make the coaxial speaker as thin as possible, so as to achieve the effect of the coaxial speaker while not exceeding the structural thickness of a speaker.

To achieve the above object, the utility model provides a coaxial linear speaker structure, comprising:

A bracket, wherein a first groove is provided in the middle of the bracket, and a second groove is provided around the periphery of the first groove;

A treble part, the treble part comprising a small magnet arranged at the axis center of the first groove and a small voice coil distributed around the small magnet;

A bass part, the bass part comprising a large magnet disposed on the periphery of the small voice coil and a large voice coil distributed on the periphery of the large magnet;

The damper is arranged at the position where the bracket is located on the outer peripheral wall of the second groove, the small voice coil and the large voice coil are arranged at the lower wall of the damper, and the upper wall of the damper is respectively provided with a small diaphragm and a ring diaphragm,

The small diaphragm and the treble part form a treble cavity.

The annular diaphragm, the bass part and the second groove form a bass cavity.

In the actual design of the technical solution of the utility model, the treble and the bass are arranged in the first groove through the bracket (and the small magnet, the small voice coil, the large magnet and the large voice coil are distributed at intervals along the axis), and at the same time, the small voice coil and the large voice coil are designed to be in the same position through the elastic wave as a connecting structure; and the treble area and the bass area are divided by the elastic wave, so the thickness of the coaxial speaker is relatively smaller, and the elastic wave effectively optimizes the vibration balance and audio distortion of the speaker, ensuring the independent sounding of the small diaphragm and the ring diaphragm; that is, the bass and the treble adopt the same-plane coaxial design (the same plane is achieved through the bracket), so that the coaxial speaker can be as thin as possible, and the effect of the coaxial speaker can be achieved without exceeding the structural thickness of one speaker; it has the performance advantages of a conventional coaxial speaker and the ultra-thin thickness of a single speaker.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a perspective view of the utility model in a cutaway state;

Fig. 2 is a cross-sectional view of the utility model;

FIG3 is a partial exploded view of the utility model;

FIG4 is a perspective view of a partial structure of the utility model in a cutaway state;

Figure 5 is a three-dimensional schematic diagram of the utility model;

Figure 6 is an acoustic SPL test table;

Figure 7 is a THD test table.

1 is a bracket, 11 is a first groove, 12 is a second groove, 2 is a treble part, 20 is a treble cavity, 21 is a small magnet, 22 is a small voice coil, 23 is a small diaphragm, 3 is a bass part, 30 is a bass cavity, 31 is a large magnet, 32 is a large voice coil, 33 is a ring diaphragm, 41 is a small washer, 42 is a large washer, 421 is a base, 422 is a support, 5 is a stacking area, 6 is a spring wave, 61 is a first deformation part, 62 is a second deformation part, 63 is a third deformation part, 64 is a first annular part, 65 is a second annular part, 66 is a third annular part, 67 is a fourth annular part, 7 is a U iron, 71 is a step part, and 8 is a hole position.

Detailed ways

The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the utility model, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

As shown in FIGS. 1 to 5 , a coaxial linear speaker structure includes:

A bracket 1, wherein a first groove 11 is provided in the middle of the bracket 1, and a second groove 12 is provided around the periphery of the first groove 11;

The treble part 2 includes a small magnet 21 disposed at the axis of the first groove 11 and a small voice coil 22 distributed around the small magnet 21;

The bass part 3 includes a large magnet 31 disposed on the periphery of the small voice coil 22 and a large voice coil 32 distributed on the periphery of the large magnet 31;

The damper 6 is arranged at the position of the bracket 1 at the outer peripheral wall of the second groove 12, the small voice coil 22 and the large voice coil 32 are arranged at the lower wall position of the damper 6, and the upper wall of the damper 6 is respectively provided with a small diaphragm 23 and a ring diaphragm 33,

The small diaphragm 23 and the treble part 2 form a treble cavity 20.

The annular diaphragm 33 and the bass part 3 form a bass cavity 30 .

In the actual design, the treble part 2 and the bass part 3 are arranged in the first groove 11 through the bracket 1 (and the small magnet 21, the small voice coil 22, the large magnet 31 and the large voice coil 32 are distributed at intervals along the axis). At the same time, the small voice coil 22 and the large voice coil 32 are designed to be at the same position through the elastic wave 6 as a connecting structure; and the treble area and the bass area are divided by the elastic wave 6, so the thickness of the coaxial speaker is relatively smaller, and the elastic wave 6 effectively optimizes the vibration balance and audio distortion of the speaker, ensuring the independent sounding of the small diaphragm 23 and the annular diaphragm 33; that is, the bass part 3 and the treble part 2 adopt a coaxial design on the same plane (achieved on the same plane through the bracket 1), so that the coaxial speaker can be as thin as possible, and can achieve the effect of the coaxial speaker without exceeding the structural thickness of a speaker; it has the performance advantages of a conventional coaxial speaker and the ultra-thin thickness of a single speaker.

In the embodiment of the utility model, the small magnet 21 and the large magnet 31 have the same height; the small voice coil 22 and the large voice coil 32 have the same height, wherein the magnet and the voice coil (i.e., the coil) drive the elastic wave 6 to change through electrical changes, thereby realizing the resonance of the diaphragm; the advantage of the same height lies in the stability of assembly and vibration. Of course, in a specific design, the relative height can also be adjusted according to the requirements of high or low frequency.

Specifically, a small washer 41 is provided on the upper wall of the small magnet 21, and a large washer 42 is provided on the upper wall of the large magnet 31, wherein washer is the general name for spring washers, and washers are also called "washers" in the speaker field; they usually form a magnetic circuit with T-irons and magnets to form a magnetic gap to provide a uniform magnetic field required for the movement of the voice coil.

Its thickness and the width of the voice coil determine the size of the speaker's bass distortion. If there is no means of fluctuation, there will be no uniform magnetic field, the speaker will not have higher sensitivity and lower distortion, and the speaker will not sound very good.

In the embodiment of the utility model, the large washer 42 includes a base 421 and a support 422 extending upward from the middle of the base 421. The support 422 is in contact with the elastic wave 6. The width of the support 422 is smaller than the diameter of the base 421. According to the high-frequency and low-frequency audio requirements, the support 422 is matched with the elastic wave 6 to achieve the separation of treble and bass and reduce resonance, thereby effectively ensuring the vibration balance of the speaker.

Specifically, the outer periphery of the small diaphragm 23 and the inner periphery of the annular diaphragm 33 are stacked on each other to form a stacking area 5 , and the stacking area 5 is arranged opposite to the support 422 .

More specifically, the elastic wave 6 includes a first deformation zone 61, a second deformation zone 62 and a third deformation zone 63; a closed-loop first annular portion 64 is provided on the inner periphery of the first deformation zone, a closed-loop second annular portion 65 is provided between the first deformation zone and the second deformation zone, a closed-loop third annular portion is provided on the outer periphery of the second deformation zone and the third deformation zone, and a fourth annular portion 67 is provided on the outer periphery of the third deformation zone, thereby realizing relative audio vibration and driving the diaphragm to vibrate.

In the embodiment of the utility model, the stacking area 5 and the bracket 1 are respectively arranged on the upper wall and the lower wall of the second annular portion 65, which ensures the relative independence of the tweeter cavity 20 and the bass cavity 30 and avoids the resonance of the two cavities.

Specifically, the bracket 1 includes a U-iron 7 , the middle portion of the bracket 1 is disposed on a stepped portion 71 , the upper end of the U-iron is mounted on the stepped portion, and the U-iron and the bracket 1 surround the first groove 11 .

In the embodiment of the utility model, the second groove 12 is provided with a plurality of holes 8 arranged at intervals, so as to suppress resonance.

The following table is a comparison table of test data of this product and existing products using 318 artificial ears/126mV:

Among them, RD is the test group of this application;

Figure 6 shows the acoustic SPL: compared to the speakers of Apple headphones, they have obvious advantages in low, medium and high frequencies. Compared to the speakers of Sony headphones, the high frequencies are relatively low and need to be optimized.

Figure 7 shows THD: basically all can be satisfied within 1 point.

The sound quality is strong and full with a three-dimensional sense; in terms of performance, the low frequency loudness is high and the bandwidth is wide.

The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly/indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims (10)

1. A coaxial linear horn structure comprising:

The device comprises a bracket, wherein a first groove is formed in the middle of the bracket, and a second groove is formed in the periphery of the first groove;

The first groove is provided with a high-pitched part and a low-pitched part,

The high-pitch part comprises a small magnet arranged at the axial center of the first groove and small voice coils distributed on the periphery of the small magnet;

The bass part comprises a large magnet arranged on the periphery of the small voice coil and large voice coils distributed on the periphery of the large magnet;

The flick wave is arranged at the position of the bracket, which is positioned on the outer peripheral wall of the second groove, the small voice coil and the large voice coil are arranged at the position of the lower wall of the flick wave, the upper wall of the flick wave is respectively provided with a small diaphragm and a ring diaphragm,

The small diaphragm and the high-pitched part enclose Gao Yinqiang,

The annular diaphragm, the bass portion and the second groove enclose a bass chamber.

2. The coaxial linear horn structure of claim 1, wherein: the small magnet and the large magnet are the same in height.

3. The coaxial linear horn structure of claim 1, wherein: the small voice coil and the large voice coil are the same in height.

4. The coaxial linear horn structure of claim 1, wherein: the upper wall of the small magnet is provided with a small washer, and the upper wall of the large magnet is provided with a large washer.

5. The coaxial linear horn structure of claim 4, wherein: the big washer comprises a base and a support extending upwards from the middle of the base, wherein the support is attached to the elastic wave, and the width of the support is smaller than the diameter of the base.

6. The coaxial linear horn structure of claim 5, wherein: the periphery of the small diaphragm and the inner periphery of the annular diaphragm are mutually overlapped and enclose a lamination area, and the lamination area is opposite to the support.

7. The coaxial linear horn structure of claim 6, wherein: the elastic wave comprises a first deformation area, a second deformation area and a third deformation area; the inner periphery of the first deformation zone is provided with a first annular part of a closed loop, a second annular part of the closed loop is arranged between the first deformation zone and the second deformation zone, the outer periphery of the second deformation zone and the outer periphery of the third deformation zone are provided with a third annular part of the closed loop, and the outer periphery of the third deformation zone is provided with a fourth annular part.

8. The coaxial linear horn structure of claim 7, wherein: the lamination area and the bracket are respectively arranged on the upper wall and the lower wall of the second annular part.

9. The coaxial linear horn structure of claim 1, wherein: the support includes U iron, the ladder portion is located at the middle part of support, U iron's upper end is installed in the ladder portion, U iron and support enclose into first recess.

10. The coaxial linear horn structure of claim 1, wherein: the second groove is provided with a plurality of hole sites which are arranged at intervals.