CN210075553U

CN210075553U - Compact composite phase-reversal sound box structure with point sound source design

Info

Publication number: CN210075553U
Application number: CN201921417681.6U
Authority: CN
Inventors: 赖冬; 曹荣臻
Original assignee: Guangzhou An Heng Electronic Technology Co Ltd
Current assignee: Guangzhou An Heng Electronic Technology Co Ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-02-14
Anticipated expiration: 2029-08-29

Abstract

The utility model discloses a compact composite phase inversion sound box structure with point sound source design, which comprises a box body, wherein one surface of the box body is a sound box panel, the middle part of the sound box panel is provided with a phase inversion hole, a high-frequency horn is arranged in the box body, the high-frequency horn part passes through the phase inversion hole, and a gap is arranged between the high-frequency horn and the phase inversion hole; the loudspeaker panel is characterized in that symmetrical loudspeaker fixing holes are formed in two sides of the phase reversal hole, medium and low frequency loudspeakers are arranged in the loudspeaker fixing holes in the two sides, the core magnet portion of the high frequency loudspeaker and the core magnet portions of the medium and low frequency loudspeakers on the two sides are on a concentric circular arc, and the concentric circular arc is sunken in the loudspeaker panel. The high-frequency loudspeaker is arranged in the phase reversal hole, so that the whole phase reversal sound box is more compact in structure; in addition, the core magnet parts of the high-frequency loudspeaker and the middle-low frequency loudspeaker are arranged on the same concentric circular arc, so that a point sound source structure is formed compactly; the whole sound box is more compact in structure and better in sound effect.

Description

Compact composite phase-reversal sound box structure with point sound source design

Technical Field

The utility model relates to an audio amplifier field especially relates to a point sound source designs compact's compound phase inversion audio amplifier structure.

Background

The phase inversion type sound box is also called a low frequency radiation type sound box, and is the most common box design in the current multimedia sound box. It is different from closed sound box in that the front of sound box is designed with cylindrical phase reversal hole to make the air inside and outside the box body circulate, and it has higher power bearing capacity and lower distortion than closed box, and its volume sense is sufficient, sensitivity is high, so that it is applicable to general family, also can be used in hall or professional place. The existing phase-reversal sound box has higher and higher requirements, not only has a medium-low frequency horn, but also has a high-frequency horn, the timbre is more complex, generally is a line sound source or a plane sound source, and the effect is not good; and the structure is not very rational. In addition, in the existing high-power loudspeaker system, because of the compactness of the internal design, the loudspeaker is obliquely arranged, and a large-area diaphragm of a medium-low sound loudspeaker usually vibrates under asymmetric pressure.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at solving above-mentioned problem to a certain extent at least, for this reason proposes a point sound source design compact compound phase inversion audio amplifier structure, can solve current phase inversion audio amplifier audio good inadequately, the structure problem reasonable inadequately to a certain extent.

The technical scheme of the utility model is realized like this:

a compact composite phase-inverted sound box structure with a point sound source design comprises a box body, wherein one surface of the box body is a sound box panel, the middle part of the sound box panel is provided with a phase-inverted hole, a high-frequency horn is arranged in the box body, the high-frequency horn partially penetrates through the phase-inverted hole, and a gap is formed between the high-frequency horn and the phase-inverted hole; the loudspeaker panel is characterized in that symmetrical loudspeaker fixing holes are formed in two sides of the phase reversal hole, medium and low frequency loudspeakers are arranged in the loudspeaker fixing holes in the two sides, the core magnet portion of the high frequency loudspeaker and the core magnet portions of the medium and low frequency loudspeakers on the two sides are on a concentric circular arc, and the concentric circular arc is sunken in the loudspeaker panel.

As a further alternative of the point sound source design compact composite phase inversion sound box structure, a baffle is arranged on one side, close to the phase inversion hole, of the horn fixing hole, the baffle is parallel to the end face of the horn fixing hole, and a gap is formed between the baffle and the middle-low frequency horn.

As a further alternative to the compact composite inverted phase sound box structure of the point sound source design, the gap between the baffle and the medium-low frequency horn is 1/10-1/5 of the horn face diameter of the medium-low frequency horn.

As a further alternative to the compact composite phase inversion sound box configuration of the point source design, the baffle shields the horn face diameters of the mid and low frequency horns from 1/3-1/2.

The beneficial effects of the utility model are that: the high-frequency loudspeaker is arranged in the phase reversal hole, so that the whole phase reversal sound box is more compact in structure; in addition, the core magnet parts of the high-frequency loudspeaker and the middle-low frequency loudspeaker are arranged on the same concentric circular arc, so that a point sound source structure is formed compactly; the whole sound box is more reasonable and compact in structure and better in sound effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a compact composite phase-inverted sound box structure designed for point sound sources.

In the figure: 1. a box body; 11. a sound box panel; 2. an inverter hole; 3. a horn fixing hole; 4. a high frequency horn; 5. a medium and low frequency horn; 6. a core magnet portion; 7. concentric circular arcs; 8. and a baffle plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1, a compact composite phase inversion sound box structure with a point sound source design is shown, which includes a box body 1, one side of the box body 1 is a sound box panel 11, the middle part of the sound box panel 11 is provided with a phase inversion hole 2, a high-frequency horn 4 is arranged in the box body 1, the high-frequency horn 4 partially passes through the phase inversion hole 2, and a gap is formed between the high-frequency horn 4 and the phase inversion hole 2; the loudspeaker panel 11 is provided with symmetrical loudspeaker fixing holes 3 at two sides of the phase inversion hole 2, the loudspeaker fixing holes 3 at two sides are provided with medium and low frequency loudspeakers 5, the core magnet part 6 of the high frequency loudspeaker 4 and the core magnet parts 6 of the medium and low frequency loudspeakers 5 at two sides are arranged on a concentric circular arc 7, and the concentric circular arc 7 is sunken in the loudspeaker panel 11.

Thus, the high-frequency loudspeaker 4 is arranged in the phase reversal hole 2, so that the whole phase reversal sound box is more compact in structure; in addition, the core magnet parts 6 of the high-frequency loudspeaker 4 and the middle-low frequency loudspeaker 5 are arranged on the same concentric circular arc 7, so that the structure of a point sound source is formed compactly; the whole sound box is more reasonable and compact in structure and better in sound effect. The whole sound box body 1 forms a point sound source sounding body, thereby greatly restraining the whole box body 1 from occupying space.

In some specific embodiments, due to the compactness of the sound box structure, the middle and low frequency speakers 5 are obliquely arranged, referring to fig. 1, the B region and the F region are in asymmetric pressure vibration, because the B region is close to the wall plate of the sound box 1, the resistance force of the B region during air vibration is larger than that of the F region, and when the air vibration resistance difference between the B region and the F region is larger, the torsional vibration diaphragm of the middle and low frequency speakers, which is generated by unbalanced force, emits additional cone torsional vibration sound to affect the sound effect of the sound box; therefore, resistance is increased near the region F, a baffle plate 8 is arranged on one side of the horn fixing hole 3 close to the inverter hole 2, the baffle plate 8 is parallel to the end face of the horn fixing hole 3, and a gap is formed between the baffle plate 8 and the medium-low frequency horn 5.

The more excellent setting is that the clearance between the baffle 8 and the medium-low frequency horn 5 is 1/10-1/5 of the horn face diameter of the medium-low frequency horn 5. The baffle 8 shields 1/3-1/2 of the horn face diameter of the medium and low frequency horn 5.

Therefore, when the vibrating diaphragm of the middle low-frequency loudspeaker 5 vibrates, the air near the F area can be blocked by the baffle 8, the resistance difference between the B area and the F area is reduced, the problem that the torsional vibrating diaphragm of the middle low-frequency loudspeaker generates additional basin torsional vibration sound due to unbalanced force is simply and effectively overcome, and the design implementation efficiency is improved.

It should be noted that the principle of the middle and low frequency horns 5 on both sides is the same, so only the middle and low frequency horn on the left side is used for description and explanation; further, the B and F regions are only two regions for indicating a large air vibration resistance, and the positions of the B and F regions are not strictly limited. And the speaker panel 11 should be broadly understood to be a surface indicating one direction of the cabinet 1.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A compact composite phase-reversal sound box structure with a point sound source design is characterized by comprising a box body, wherein one surface of the box body is a sound box panel, a phase-reversal hole is formed in the middle of the sound box panel, a high-frequency horn is arranged in the box body, the high-frequency horn partially penetrates through the phase-reversal hole, and a gap is formed between the high-frequency horn and the phase-reversal hole; the loudspeaker panel is characterized in that symmetrical loudspeaker fixing holes are formed in two sides of the phase reversal hole, medium and low frequency loudspeakers are arranged in the loudspeaker fixing holes in the two sides, the core magnet portion of the high frequency loudspeaker and the core magnet portions of the medium and low frequency loudspeakers on the two sides are on a concentric circular arc, and the concentric circular arc is sunken in the loudspeaker panel.

2. The structure of claim 1, wherein a baffle is disposed at a side of the horn fixing hole close to the inverter hole, the baffle is parallel to an end surface of the horn fixing hole, and a gap is formed between the baffle and the middle and low frequency horn.

3. The compact compound phase inversion sound box structure of claim 2, wherein the gap between the baffle and the middle and low frequency horn is 1/10-1/5 of the horn face diameter of the middle and low frequency horn.

4. The compact compound phase inversion sound box structure of claim 2, wherein the baffle shields 1/3-1/2 of the horn face diameter of the medium and low frequency horn.