CN212850982U

CN212850982U - Reflection cone and audio equipment

Info

Publication number: CN212850982U
Application number: CN202022182320.7U
Authority: CN
Inventors: 张利红
Original assignee: Goertek Techology Co Ltd
Current assignee: Goertek Techology Co Ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-03-30
Anticipated expiration: 2030-09-28

Abstract

The utility model discloses a reflection cone and audio equipment. Wherein the reflection cone comprises: the reflecting substrate is provided with a main reflecting curved surface in a protruding mode on one surface; the passive radiator is arranged on the surface of the reflection substrate, which is back to the main reflection curved surface, and forms a cavity by enclosing with the main reflection curved surface; the main reflection curved surface is provided with at least one main sound hole, and the main sound hole is communicated with the cavity. The technical scheme of the utility model aim at retraining the reflection of sound wave to a certain extent, improve the energy decline of some frequency channels of sound wave, make the distortion of these frequency channels reduce, the listening sensation is improved.

Description

Reflection cone and audio equipment

Technical Field

The utility model relates to an acoustics technical field, in particular to reflection awl and audio equipment.

Background

Loudspeakers, which are an extremely important component of audio devices (e.g., sound boxes), are responsible for the key task of converting electrical signals into sound signals for human ear listening. In the related art, a reflection cone is usually arranged below a loudspeaker of a sound box, so that sound emitted by the loudspeaker is diffused all around to form 360-degree omnibearing sound field coverage, and the stereo perception of sound emitted by audio equipment is improved. However, since the reflection cone has a cavity structure, medium-high frequency resonance is often caused in the cavity, so that vibration of certain frequencies of the loudspeaker is unstable, sound distortion is caused, and the auditory sensation is deteriorated.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide a reflection awl aims at retraining the reflection of sound wave to a certain extent, improves the energy decline of some frequency channels of sound wave, makes the distortion of these frequency channels reduce, and the audibility is improved.

In order to achieve the above object, the present invention provides a reflection cone, including: the reflecting substrate is provided with a main reflecting curved surface in a protruding mode on one surface; the passive radiator is arranged on the surface of the reflection substrate, which is back to the main reflection curved surface, and forms a cavity by enclosing with the main reflection curved surface; the main reflection curved surface is provided with at least one main sound hole, and the main sound hole is communicated with the cavity.

In an embodiment, the passive radiator includes a vibrating diaphragm and a weight connected to the vibrating diaphragm, an outer edge of the vibrating diaphragm is connected to a surface of the reflection substrate facing away from the main reflection curved surface, and the vibrating diaphragm, the weight and the main reflection curved surface enclose the cavity.

In an embodiment, the main curved reflecting surface has a central position, the plurality of main acoustic holes are formed, and the plurality of main acoustic holes are radially distributed along the main curved reflecting surface with the central position as a center.

In one embodiment, sound absorbing cotton is arranged in the cavity.

In an embodiment, the surface of the reflective substrate is further convexly provided with an auxiliary reflective curved surface, and the auxiliary reflective curved surface is arranged in the cavity and divides the cavity into two sub-cavities; the auxiliary reflection curved surface is provided with at least one auxiliary sound hole, and the auxiliary sound hole is communicated with the two sub-cavities.

In one embodiment, a ratio of a region area of the primary sound holes to an entire area of the primary reflective curved surface is defined as a first aperture ratio, and a ratio of a region area of the secondary sound holes to an entire area of the secondary reflective curved surface is defined as a second aperture ratio, where the second aperture ratio is greater than the first aperture ratio.

In an embodiment, the auxiliary reflective curved surfaces are provided in plural, the plural auxiliary reflective curved surfaces are sequentially arranged along a direction away from the passive radiator, and the plural auxiliary reflective curved surfaces divide the cavity into plural sub-cavities, and each auxiliary reflective curved surface is provided with the auxiliary sound hole.

In one embodiment, the passive radiator and the reflective substrate are of a unitary structure.

The utility model also provides an audio equipment, audio equipment includes speaker and reflection awl, the reflection awl includes: the reflecting substrate is provided with a main reflecting curved surface in a protruding mode on one surface; the passive radiator is arranged on the surface of the reflection substrate, which is back to the main reflection curved surface, and forms a cavity by enclosing with the main reflection curved surface; the main reflection curved surface is provided with at least one main sound hole, and the main sound hole is communicated with the cavity; the sound hole of the loudspeaker is arranged towards the main reflecting curved surface of the reflecting cone.

In an embodiment, the audio device is a sound box, the sound box further includes a box body, the box body is provided with an installation cavity with an opening at the bottom, a reflection substrate of the reflection cone covers the opening of the installation cavity, and the main reflection curved surface of the reflection cone and the loudspeaker are both arranged in the installation cavity.

The technical scheme of the utility model, through the protruding formation main reflection curved surface of establishing in a surface of the reflection base plate of reflection awl to set up passive radiator on the surface of reflection base plate main reflection curved surface dorsad, passive radiator and reflection curved surface enclose and close vacuole formation, set up the main sound hole of intercommunication cavity at main reflection curved surface simultaneously. When the reflection cone is used for sound reflection, due to the effect of a similar pipeline formed by the reflection cone and the loudspeaker and the arrangement of a cavity structure of the reflection cone, a main sound hole on the main reflection curved surface is similar to a resonance silencer and can inhibit sound waves of a specific frequency band, and a passive radiator is additionally arranged on the back surface of the reflection curved surface, namely a bypass filter is additionally arranged, so that impedance can be increased, the main sound hole on the main reflection curved surface can be used for reacting on the loudspeaker, the energy reduction of the sound waves in certain frequency bands can be improved, the resonance of the reflection cone can be inhibited, the frequency response near a resonance peak can be improved, and meanwhile, the high-frequency bandwidth can be expanded, so that the auditory sensation can be improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of the audio device of the present invention;

FIG. 2 is a schematic diagram of a partially exploded structure of the audio device of FIG. 1;

FIG. 3 is a schematic structural diagram of another embodiment of the reflection cone of the present invention;

FIG. 4 is a schematic view of the reflection cone of FIG. 3 from another angle;

fig. 5 is a schematic structural diagram of another embodiment of the reflection cone of the present invention;

FIG. 6 is a schematic view of the reflection cone of FIG. 5 from another angle;

FIG. 7 is a schematic view of the reflection cone of FIG. 5 in another view, partially in section;

FIG. 8 is a schematic view of the reflection cone of FIG. 5 in partial cross-section from a further perspective;

fig. 9 is a schematic structural view of another embodiment of the reflection cone of the present invention;

FIG. 10 is a graph comparing the frequency response curves of the reflection cone and the conventional reflection cone;

fig. 11 is a graph comparing the frequency response curve of the conventional reflection cone after adjusting the vibration mass and the compliance of the passive radiator in the reflection cone.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1000	Audio equipment	15	Supporting foot
100	Reflecting cone	30	Passive radiator
				10	Reflective substrate	31	Vibrating diaphragm
11	Main reflecting curved surface	33	Balancing weight
				111	Main sound hole	50	Hollow cavity
13	Auxiliary reflective curved surface	200	Box body
				131	Auxiliary sound hole	210	Sound outlet

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, 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.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

Referring to fig. 1 and 2, the present invention provides a reflection cone 100 applied to an audio device 1000, wherein the audio device 1000 includes a speaker.

Referring to fig. 2 to 8, in an embodiment of the reflection cone 100 of the present invention, the reflection cone 100 includes: a reflection substrate 10, wherein a main reflection curved surface 11 is convexly arranged on one surface of the reflection substrate 10; the passive radiator 30 is arranged on the surface, back to the main reflecting curved surface 11, of the reflecting substrate 10, and the passive radiator 30 and the main reflecting curved surface 11 enclose to form a cavity 50; the main curved reflecting surface 11 is provided with at least one main sound hole 111, and the main sound hole 111 is communicated with the cavity 50.

The outer contour of the reflective substrate 10 is circular, and has two opposite surfaces, one of which is convexly provided with a main reflective curved surface 11, and the other surface is arranged in a substantially circular disk-shaped structure, when the reflective substrate 10 is installed, the main reflective curved surface 11 faces the loudspeaker, so that smooth transition of transmission and reflection of the acoustic wave by the reflective cone 100 can be ensured, and loss of acoustic wave energy is avoided. The main reflection curved surface 11 may be a paraboloid so as to diffuse and propagate the sound wave, and further improve the uniformity of the sound wave transmission, and of course, the main reflection curved surface 11 may also be a spline curved surface, a multi-fold ring curved surface, or a curved surface with other shapes. The shape of the main reflecting curved surface 11 may be selected according to the speaker so that the sound reflecting efficiency is high. Alternatively, the curvature of the main curved reflecting surface 11 may be matched with the curvature of the diaphragm 31 in the speaker to improve the transmission effect of the sound wave.

The reflective substrate 10 may be made of metal (the metal may be made of stainless steel, aluminum alloy, copper alloy, iron alloy, etc.), plastic (the plastic may be made of hard plastic, such as ABS, POM, PS, PMMA, PC, PET, PBT, PPO, etc.), other alloy materials, and the like. Or a mixture of metal material and plastic. Therefore, the stability of the reflecting cone 100 is improved, and the practicability, reliability and durability of the reflecting cone 100 are effectively improved.

The passive radiator 30, as the main component for controlling the low frequency effect of the audio device 1000, is generally designed to be a structure of a corrugated diaphragm 31 and a flat passive weight 33, and the diaphragm 31 can vibrate along with the sound wave airflow during operation and drive the weight 33 to vibrate, thereby realizing the low frequency effect. Here, the passive radiator 30 is connected to a surface of the reflective substrate 10 opposite to the main reflective curved surface 11 and encloses with the main reflective curved surface 11 to form a cavity 50, wherein the passive radiator 30 and the reflective substrate 10 may be connected by gluing. The main curved reflecting surface 11 is provided with at least one main sound hole 111, and the shape of the main sound hole 111 can be circular, oval, oblong or other reasonable and effective shapes. The size of the main sound hole 111 can be set according to the size of the loudspeaker, and experiments prove that the position and the shape of a trough generated on a frequency response curve of the sound box can be obviously changed by changing the size of the main sound hole 111.

It can be understood that, after the sound transmitted from the speaker is reflected by the main reflecting curved surface 11, due to the effect of the pipe-like structure formed by the reflecting cone 100 and the speaker and the arrangement of the cavity 50 structure of the reflecting cone 100, the main sound hole 111 on the main reflecting curved surface 11 is similar to a resonant muffler, and can generate an inhibiting effect on the sound wave of a specific frequency band, or generate a trough on the frequency response curve, which exactly offsets the crest generated on the original frequency response curve of the reflecting cone 100, so that the frequency response curve is smoother, the obtained audio device 1000 has better sound quality effect, avoids the distortion phenomenon, and the transmitted sound is stereo and full, the frequency band is not lost, and is not harsh. In addition, because the passive radiator 30 is additionally arranged on the back of the reflecting curved surface, which is equivalent to the addition of a bypass filter, the impedance can be increased, and the main sound hole 111 on the main reflecting curved surface 11 can be used for reacting on the loudspeaker, so that the energy reduction of sound waves in certain frequency bands is improved, the resonance of the reflecting cone 100 is inhibited, the frequency response near a resonance peak is improved, and meanwhile, the high-frequency bandwidth is expanded, so that the hearing sense is improved.

The technical scheme of the utility model, through the protruding formation main reflection curved surface 11 of establishing in reflection base plate 10 of reflection awl 100's a surface to set up passive radiator 30 on reflection base plate 10 surface of main reflection curved surface 11 dorsad, passive radiator 30 and reflection curved surface enclose and close vacuole 50, set up the main sound hole 111 of intercommunication cavity 50 at main reflection curved surface 11 simultaneously. When the reflection cone 100 is used for sound reflection, due to the effect of a similar pipeline formed by the reflection cone 100 and a loudspeaker and the arrangement of the cavity 50 structure of the reflection cone 100, the main sound hole 111 on the main reflection curved surface 11 is similar to a resonance silencer and can inhibit sound waves of a specific frequency band, and due to the fact that the passive radiator 30 is additionally arranged on the back of the reflection curved surface, namely a bypass filter is additionally arranged, impedance can be increased, the main sound hole 111 on the main reflection curved surface 11 can be used for reacting on the loudspeaker, energy reduction of certain frequency bands of the sound waves is improved, resonance of the reflection cone 100 is inhibited, frequency response near a resonance peak is improved, and meanwhile, high-frequency bandwidth is expanded, so that hearing sense is improved.

In an embodiment of the present invention, the passive radiator 30 includes the vibrating diaphragm 31 and the balancing weight 33 connected to the vibrating diaphragm 31, the outer edge of the vibrating diaphragm 31 is connected to the surface of the reflection substrate 10 back to the main reflection curved surface 11, and the vibrating diaphragm 31, the balancing weight 33 and the main reflection curved surface 11 enclose the closed forming cavity 50.

Specifically, the material of vibrating diaphragm 31 can the rubber material, and vibrating diaphragm 31 generally includes outside connecting portion, the ring portion of rolling over and inboard connecting portion that set gradually from outer to inner, and balancing weight 33 generally adopts the article of metal material, and inboard connecting portion connect in balancing weight 33, can be half cladding balancing weight 33 of inboard connecting portion, also can be the complete cladding balancing weight 33 of inboard connecting portion. The outer connecting portion is connected to the surface of the reflective substrate 10 opposite to the main reflective curved surface 11, and the connecting manner may be glue. The corrugated portion has a substantially annular concave-convex structure, and has a concave surface and a convex surface opposite to each other, and when the passive radiator 30 is fixed, the concave surface of the corrugated portion may face the main reflective curved surface 11, or the convex surface of the corrugated portion may face the main reflective curved surface 11, which is not limited herein. It can be understood that the connection between the diaphragm 31 and the reflective substrate 10 is realized by fixedly connecting the outer connecting portion to the surface of the reflective substrate 10 facing away from the main reflective curved surface 11, so that the diaphragm 31, the weight 33 and the main reflective curved surface 11 together enclose the cavity 50.

In an embodiment of the present invention, the main curved reflection surface 11 has a central position, the main sound hole 111 has a plurality of openings, and the plurality of main sound holes 111 are radially distributed along the main curved reflection surface with the central position as the center.

Because the shape of the main reflection curved surface 11 may be various shapes such as a paraboloid, a spline curved surface, a polygonal ring curved surface, and the like, when the main reflection curved surface 11 is a paraboloid, the highest point thereof is formed as a conical tip, that is, the central position of the main reflection curved surface 11, and when the main reflection curved surface 11 is in other shapes, the central position may not be the highest point thereof. The plurality of main sound holes 111 are radially distributed along the main reflection surface with the central position as the center, so that the frequency response curve of the audio device 1000 can be effectively improved, a trough can be generated on the frequency response curve, and the trough and a peak generated on the original frequency response curve of the reflection cone 100 are just mutually offset, so that the frequency response curve is smoother, and the tone quality effect of the audio device 1000 is improved.

It should be noted that, through experimental verification, the positions of the troughs generated on the frequency response curve of the sound box can be obviously changed by changing the number of the main sound holes 111, and the frequency response curve of the audio device 1000 can be improved accordingly.

Further, sound absorbing cotton is provided in the cavity 50. The arrangement of the sound absorbing cotton can further increase the damping, so that the energy of certain frequency bands is continuously attenuated and reduced, the frequency response curve is smoother, and the tone quality effect of the audio equipment 1000 is further improved.

It should be noted that the sound-absorbing cotton may be attached to the inner wall of the cavity 50 and cover the main sound hole 111; of course, the sound-absorbing cotton may fill the entire cavity 50.

Referring to fig. 5 and 9, in an embodiment of the present invention, an auxiliary reflective curved surface 13 is further protruded on the surface of the reflective substrate 10, the auxiliary reflective curved surface 13 is disposed in the cavity 50, and the cavity 50 is divided into two sub-cavities 50; the auxiliary reflection curved surface 13 is provided with at least one auxiliary sound hole 131, and the auxiliary sound hole 131 is communicated with the two sub-cavities 50.

The shape of the auxiliary reflecting curved surface 13 can be the same as or different from that of the main reflecting curved surface 11, the auxiliary reflecting curved surface 13 divides the cavity 50 into two sub-cavities 50, and the auxiliary sound hole 131 for communicating the two sub-cavities 50 is arranged, so that the multi-cavity and open-hole structure arrangement jointly plays a filtering role, and the harmonic peak energy is absorbed to smooth a frequency response curve. The structural design of a plurality of cavities can carry out detail adjustment, increases the damping, makes the frequency response curve more smooth.

In order to further increase the damping, so that the energy in some frequency bands is further attenuated and reduced, and the frequency response curve is smoother, sound absorbing cotton can be arranged in each sub-cavity 50.

It should be noted that, a plurality of auxiliary sound holes 131 are usually provided, and the plurality of auxiliary sound holes 131 are radially distributed along the auxiliary reflection surface with the central position of the auxiliary reflection surface as the center, so that the frequency response curve can be more effectively smoothed.

The ratio of the area of the main sound hole 111 to the total area of the main reflective curved surface 11 is defined as a first aperture ratio, and the ratio of the area of the auxiliary sound hole 131 to the total area of the auxiliary reflective curved surface 13 is defined as a second aperture ratio, which is greater than the first aperture ratio. By the arrangement, the harmonic peak energy can be absorbed more effectively, and a frequency response curve is smoothed.

It is understood that when the number of the main sound holes 111 coincides with the number of the auxiliary sound holes 131, the aperture diameter of the auxiliary sound holes 131 is larger than that of the main sound holes 111, so that the second open porosity is larger than the first open porosity. And the auxiliary sound hole 131 may be opened at the top of the auxiliary reflection surface to more effectively absorb the energy of the resonance peak and smooth the frequency response curve.

Further, the auxiliary reflective curved surfaces 13 are provided in a plurality, the plurality of auxiliary reflective curved surfaces 13 are sequentially arranged along a direction away from the passive radiator 30, the plurality of auxiliary reflective curved surfaces 13 partition the cavity 50 into a plurality of sub-cavities 50, and each auxiliary reflective curved surface 13 is provided with an auxiliary sound hole 131. The multi-cavity and open pore structure arrangement has a filtering effect together, and can effectively absorb the energy of the resonance peak and smooth the frequency response curve.

In order to more effectively absorb the resonance peak energy, the frequency response curve is smoothed, the aperture of the auxiliary sound hole 131 of the auxiliary curved reflective surface 13 close to the passive radiator 30 is larger than the size of the auxiliary sound hole 131 of the auxiliary curved reflective surface 13 far from the passive radiator 30, and sound-absorbing cotton may be further disposed in each sub-cavity 50.

In an embodiment of the present invention, the passive radiator 30 and the reflective substrate 10 are integrated. The passive radiator 30 and the reflection substrate 10 can be injection-molded into an integral structure through an injection molding process, the operation is simple, and the installation stability and reliability of the passive radiator 30 can be effectively ensured.

The utility model discloses still provide an audio equipment 1000, audio equipment 1000 include the speaker and as before reflection awl 100, the sound hole of speaker sets up towards main curved reflective surface 11, and this reflection awl 100's concrete structure refers to aforementioned embodiment. Since the audio device 1000 adopts all technical solutions of all the foregoing embodiments, at least all the beneficial effects brought by the technical solutions of the foregoing embodiments are achieved, and are not described in detail herein.

Referring to fig. 1 and 2, in an embodiment of the audio device 1000 of the present invention, the audio device 1000 is a sound box, the sound box further includes a box 200, the box 200 is provided with an installation cavity (not labeled) with an opening at the bottom, the reflection substrate 10 of the reflection cone 100 covers the opening of the installation cavity, and the main reflection curved surface 11 of the reflection cone 100 and the speaker are both disposed in the installation cavity.

Specifically, the box 200 is provided with an installation cavity with an opening at the bottom, the outer edge of the reflective substrate 10 of the reflective cone 100 covers the opening, that is, the outer edge of the reflective substrate 10 is connected to the box 200, the connection mode may be glue joint, clamping joint or other reasonable and effective connection modes, and after the reflective substrate 10 is fixed, the main reflective curved surface 11 is located in the installation cavity. The speaker is disposed in the installation cavity and is fixedly connected to the cabinet 200. The side wall of the box body 200 close to the bottom is provided with a plurality of sound outlets 210, and the plurality of sound outlets 210 are distributed at intervals along the circumferential direction of the box body 200. Thus, when the loudspeaker is loaded with an audio signal to work and emits sound, the sound is reflected by the main reflecting curved surface 11, so that the sound is dispersed to the periphery and emitted through the sound outlet 210.

In order to prevent the passive radiator 30 of the reflection cone 100 from directly contacting with the placement surface when the sound box is placed, and affecting the performance of the sound box, the surface of the reflection substrate 10 facing the passive radiator 30 is provided with a plurality of support legs 15, optionally, the support legs 15 are arc-shaped and are arranged at the outer edge of the reflection substrate 10, and the plurality of support legs 15 are arranged at intervals along the circumferential direction of the reflection substrate 10.

Referring to fig. 10, fig. 10 is a graph comparing frequency response curves of the reflection cone 100 implemented by the present invention and the conventional reflection cone 100, wherein the horizontal axis represents frequency in Hz, and the vertical axis represents decibel in dB. Dotted line part is for adopting the embodiment of the utility model provides an acoustic frequency response curve of the audio amplifier of reflection awl 100, the acoustic frequency response curve of the audio amplifier of solid line part for adopting traditional reflection awl 100.

It can be clearly seen that, the smoothness of the acoustic frequency response curve of the sound box adopting the reflection cone 100 of the embodiment of the present invention is higher. Therefore, the sound wave is in the utility model discloses when reflection awl 100 reflects, because passive radiator 30 has been add at the reflection curved surface back, has increased the wave filter of a bypass in other words, can enough increase impedance, can utilize the main sound hole 111 reaction on the main reflection curved surface 11 to act on the speaker again, improve the energy decline of some frequency channels of sound wave, restrain reflection awl 100 resonance, improve the frequency response near the harmonic peak, expand the high frequency bandwidth simultaneously to improve the audibility.

Further, can be through the vibration quality and the compliance of adjusting passive radiator 30, be equivalent to the resonance peak position and the resonance response curve of adjusting the wave filter promptly, offset a part with reflection awl 100 formant, further make its frequency response curve more level and smooth, please refer to specifically 11, wherein the dotted line part is the embodiment of the utility model discloses adjust the vibration quality of passive radiator 30 and the acoustic frequency response curve of the audio amplifier of reflection awl 100 behind the compliance, the solid line part is the acoustic frequency response curve of the audio amplifier of adopting traditional reflection awl 100.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A reflective cone, comprising:

the reflecting substrate is provided with a main reflecting curved surface in a protruding mode on one surface; and

the passive radiator is arranged on the surface of the reflection substrate, which is back to the main reflection curved surface, and forms a cavity by enclosing with the main reflection curved surface;

the main reflection curved surface is provided with at least one main sound hole, and the main sound hole is communicated with the cavity.

2. The reflection cone of claim 1, wherein the passive radiator comprises a diaphragm and a weight connected to the diaphragm, an outer edge of the diaphragm is connected to a surface of the reflection substrate facing away from the main reflection curved surface, and the diaphragm, the weight and the main reflection curved surface enclose the cavity.

3. The reflection cone according to claim 1, wherein said main reflection curved surface has a central position, and a plurality of said main acoustic holes are formed, and are radially distributed along said main reflection curved surface with said central position as a center.

4. The reflection cone of claim 1, wherein sound absorbing cotton is disposed within said cavity.

5. The reflection cone according to any one of claims 1 to 4, wherein the surface of the reflective substrate is further convexly provided with an auxiliary reflective curved surface, the auxiliary reflective curved surface is disposed in the cavity and divides the cavity into two sub-cavities;

the auxiliary reflection curved surface is provided with at least one auxiliary sound hole, and the auxiliary sound hole is communicated with the two sub-cavities.

6. The reflection cone of claim 5, wherein a ratio of a region area of said primary acoustic holes to a total area of said primary reflective curved surface is defined as a first aperture ratio, and a ratio of a region area of said secondary acoustic holes to a total area of said secondary reflective curved surface is defined as a second aperture ratio, said second aperture ratio being greater than said first aperture ratio.

7. The reflection cone according to claim 5, wherein a plurality of the auxiliary reflective curved surfaces are provided, the plurality of auxiliary reflective curved surfaces are sequentially provided in a direction away from the passive radiator, and the plurality of auxiliary reflective curved surfaces partition the cavity to form a plurality of sub-cavities, and each of the auxiliary reflective curved surfaces is provided with the auxiliary acoustic hole.

8. The reflection cone of any one of claims 1 to 4, wherein the passive radiator is of unitary construction with the reflective substrate.

9. Audio apparatus, characterized in that the audio apparatus comprises a loudspeaker and a reflex cone as claimed in any one of claims 1 to 8, the sound aperture of the loudspeaker being arranged towards the main curved reflective surface of the reflex cone.

10. The audio device according to claim 9, wherein the audio device is a sound box, the sound box further comprises a box body, the box body is provided with a mounting cavity with an opening at the bottom, the reflection substrate of the reflection cone covers the opening of the mounting cavity, and the main reflection curved surface of the reflection cone and the speaker are both arranged in the mounting cavity.