CN112929770A - Sound cavity structure and sound box - Google Patents
Sound cavity structure and sound box Download PDFInfo
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- CN112929770A CN112929770A CN202110160915.9A CN202110160915A CN112929770A CN 112929770 A CN112929770 A CN 112929770A CN 202110160915 A CN202110160915 A CN 202110160915A CN 112929770 A CN112929770 A CN 112929770A
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- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000008859 change Effects 0.000 abstract description 2
- 230000004044 response Effects 0.000 description 10
- 238000004088 simulation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005253 cladding Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/2811—Enclosures comprising vibrating or resonating arrangements for loudspeaker transducers
Abstract
The invention discloses a sound cavity structure and a sound box, wherein the sound cavity structure comprises a sound cavity body and an air pipe channel arranged on the sound cavity body; the sound cavity body is provided with a first mounting hole, and the first mounting hole is used for mounting a loudspeaker; the first end of the air pipe channel is communicated with the interior of the sound cavity body, and the second end of the air pipe channel is located outside the sound cavity body. In the embodiment of the present disclosure, through set up the tuber pipe passageway on the sound cavity structure, can change the bass radiation of the back of speaker into the radiation with the positive bass radiation same phase of speaker through the tuber pipe passageway to increase the bass radiation that the audio amplifier radiated the exterior space, thereby increase bass sound production effect.
Description
Technical Field
The invention relates to the technical field of sound boxes, in particular to a sound cavity structure and a sound box.
Background
With the development of technology, audio equipment is continuously upgraded. The volume of the existing loudspeaker box is reduced so as to facilitate carrying of the loudspeaker box. This kind of audio amplifier is usually through single speaker sound production, in order to satisfy the low frequency lower limit of audio amplifier, needs increase the volume of speaker to satisfy the sound production demand.
The sound box in the prior art can not simultaneously meet two requirements of being convenient to carry and guaranteeing the low-frequency lower limit of the sound box.
Therefore, a new technical solution is needed to solve the above technical problems.
Disclosure of Invention
It is an object of the present invention to provide a new solution for an acoustic cavity structure.
According to a first aspect of the present invention, there is provided an acoustic cavity structure comprising an acoustic cavity body and a duct channel provided on said acoustic cavity body;
the sound cavity body is provided with a first mounting hole, and the first mounting hole is used for mounting a loudspeaker;
the first end of the air pipe channel is communicated with the interior of the sound cavity body, and the second end of the air pipe channel is located outside the sound cavity body.
Optionally, the acoustic chamber body comprises a main body and an accessory shell;
the first mounting hole is formed in the main body, the auxiliary shell covers the main body, and the air duct channel is formed between the main body and the auxiliary shell.
Optionally, an air outlet groove is formed in the main body, and the auxiliary shell covers the air outlet groove to form the air duct channel;
wherein, the first side of air-out groove with the inside intercommunication of body, in order to form first end, the second side of air-out groove with attach the shell and dodge, in order to form the second end.
Optionally, a notch of the air outlet groove is provided with a clamping groove, and the auxiliary shell is embedded into the clamping groove.
Optionally, a tubular structure is disposed on the acoustic cavity body, and the tubular structure serves as the air duct channel.
Optionally, a hollow structure is provided on the acoustic cavity body, and the tubular structure is installed in the hollow structure.
Optionally, the acoustic chamber body comprises a main body and a housing;
the first mounting hole is formed in the main body, and an air outlet groove is formed in the side wall of the main body;
the main body is positioned in the shell, a second mounting hole is formed in the shell, and the second mounting hole is opposite to the first mounting hole;
the first side of air-out groove with the inside intercommunication of body, in order to form first end, the shell covers the air-out groove, the position that the shell corresponds with the second side of air-out groove is provided with the opening, in order to form the second end.
Optionally, the acoustic cavity body is integrally formed with the air duct channel.
Optionally, the air duct structure comprises two air duct channels, the two air duct channels are symmetrically arranged, and second ends of the two air duct channels are symmetrically distributed on two sides of the first mounting hole.
According to a second aspect of the present invention, there is provided an acoustic enclosure comprising an acoustic cavity structure as described in any one of the above.
According to an embodiment of the present disclosure, through set up the tuber pipe passageway on the sound cavity structure, can change the bass radiation of the back of speaker into the radiation with the positive bass radiation of speaker in phase through the tuber pipe passageway to increase the bass radiation that the audio amplifier radiated the exterior space, thereby increase bass sound production effect.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is one of the schematic structural diagrams of an acoustic cavity structure in one embodiment of the present disclosure.
Fig. 2 is a schematic structural diagram of a main body in one embodiment of the present disclosure.
Figure 3 is an exploded view of an acoustic chamber structure in one embodiment of the present disclosure.
Fig. 4 is a second schematic structural diagram of an acoustic cavity structure according to an embodiment of the present disclosure.
Fig. 5 is a cross-sectional view a-a in fig. 4.
FIG. 6 is a comparison graph of frequency response curves of the sound box and a conventional sound box with the same volume in the simulation effect according to an embodiment of the present disclosure.
FIG. 7 is a comparison graph of the impedance curves of the loudspeaker box of one embodiment of the present disclosure with the simulation effect of a conventional loudspeaker box of the same volume.
Fig. 8 is a comparison graph of the measured frequency response curve and the simulated frequency response curve of the loudspeaker box in one embodiment of the present disclosure.
FIG. 9 is a graph comparing the measured frequency response curve and distortion curve of an acoustic enclosure with the frequency response curve and distortion curve of a conventional acoustic enclosure, according to one embodiment of the present disclosure.
Reference numerals:
1-sound cavity body, 10-main body, 101-air outlet groove, 102-card groove, 11-first end, 12-second end, 13-auxiliary shell, 14-middle shell, 140 sink groove, 141-first mounting hole, 15-upper shell, 16-lower shell, 17-bottom plate, 18-side plate, 181-opening, 182-screen panel, 19-top plate and 2-loudspeaker.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
According to an embodiment of the present disclosure, there is provided an acoustic cavity structure, as shown in fig. 1 to 5, including an acoustic cavity body 1 and a duct channel provided on the acoustic cavity body 1;
the sound cavity body 1 is provided with a first mounting hole 141, and the first mounting hole 141 is used for mounting a loudspeaker;
the first end 11 of the air pipe channel is communicated with the interior of the acoustic cavity body 1, and the second end 12 of the air pipe channel is positioned outside the acoustic cavity body 1.
In this embodiment, the interior and exterior of the acoustic chamber body 1 communicate through the duct channel. When the speaker 2 is mounted in the first mounting hole 141 for operation, the sound wave radiated from the speaker 2 to the interior of the sound cavity body 1 can enter the duct channel through the first end 11 and radiate outwards from the second end 12. The first end 11 and the second end 12 of the ductwork channel are two ends of the ductwork channel having nozzles.
Since the wavelength of the low-frequency sound wave is long, the sound wave radiated from the speaker 2 to the inside of the sound cavity body 1 is reflected/refracted by the duct channel, and the sound wave with the same phase as the sound wave radiated from the speaker 2 to the outside can be emitted from the second end 12. This can achieve the performance of enhancing the reproduction of low frequencies, and reduce the lower limit frequency of low frequencies. The sound cavity structure can increase bass effect compared with the sound cavity structure in the conventional same-volume loudspeaker box under the condition of the same volume.
Through setting up inside and outside of tuber pipe passageway intercommunication sound cavity structure, increased the sound wave reflection volume in the sound cavity, can optimize the pronunciation effect.
Through inside and outside of tuber pipe passageway intercommunication sound cavity structure, the tuber pipe passageway can keep the inside acoustic pressure of sound cavity structure unchangeable, has protected speaker 2 normal sound production, can improve speaker 2's life.
In one embodiment, the acoustic chamber body 1 includes a main body 10 and an appendage 13. The first mounting hole 141 is provided in the main body 10, the attachment case 13 covers the main body 10, and the duct passage is formed between the main body 10 and the attachment case 13.
In this embodiment, an air duct passage formed between the appendage 13 and the main body 10 communicates the interior of the acoustic cavity structure with the exterior. A first end 11 of the duct channel is formed between one side of the attachment housing 13 and the main body 10, and a second end 12 of the duct channel is formed between the other side of the attachment housing 13 and the main body 10. The sound waves in the main body 10 enter through one side of the attached shell 13, and are reflected and radiated to the outside of the sound cavity structure from the other side.
An air duct channel is formed between the auxiliary shell 13 and the main body 10, so that the structure of the air duct channel is simplified, and the forming difficulty of the acoustic cavity structure is reduced.
In one embodiment, as shown in fig. 2 to 3, the main body 10 is provided with an air outlet slot 101, and the auxiliary shell 13 covers the air outlet slot 101 to form the air duct channel.
The first side of the air outlet groove 101 is communicated with the inside of the body 10 to form the first end 11, and the second side of the air outlet groove 101 is avoided with the attached shell 13 to form the second end 12.
In this embodiment, the duct channel is formed on the acoustic chamber body 1 by opening the air outlet groove 101 on the body 10 and the auxiliary case 13 covering the air outlet groove 101. The first side of the air-out groove 101 is communicated with the interior of the body 10 to form a pipe orifice of the first end 11 at the bottom of the air-out groove 101. After the auxiliary casing 13 covers the air outlet slot 101, the auxiliary casing 13 avoids a part of the air outlet slot 101 at the second side of the air outlet slot 101, that is, a part of space is reserved at the second side of the air outlet slot 101, so as to form a pipe opening of the second end 12.
For example, the first side and the second side are two sides that are away from each other, so that the air duct channel fully utilizes the space of the air outlet slot 101. The structure of the air-out duct 101 may be a duct structure extending along the first side to the second side.
The duct passage may be a passage horizontally distributed on the main body 10, or a passage having a bent structure in a longitudinal direction. The shape of the air duct channel can be set according to actual requirements.
The air duct channel is formed by opening the air outlet groove 101 on the main body 10 and covering the air outlet groove 101 through the auxiliary case 13. The structure is simple in forming, the processing difficulty is reduced, and the cost is reduced.
Optionally, the auxiliary shell 13 is arc-shaped, and the auxiliary shell 13 covers the main body 10 to form an air duct channel. One side of the arc-shaped attached shell 13 is communicated with the inside of the main body 10 to form a first end 11 of the air duct channel, and the other side of the arc-shaped attached shell and the outside of the main body 10 form a second end 12 of the air duct channel. For example, the main body 10 is provided with a hollow structure, and the auxiliary housing 13 covers the hollow structure.
The arc-shaped attached shell 13 and the outer contour of the main body 10 form an even air duct channel, so that the structure of the acoustic cavity is ensured to be attractive. The auxiliary shell 13 is arc-shaped, so that the structure of the auxiliary shell 13 is simpler and the auxiliary shell is easier to assemble with the main body 10.
In one embodiment, as shown in fig. 3, the notch of the air outlet slot 101 has a card slot 102, and the attached shell 13 is inserted into the card slot 102.
In this embodiment, the insertion of the attachment housing 13 into the card slot 102 makes the attachment housing 13 and the main body 10 easier to assemble together. For example, the size of the card slot 102 matches the size of the accessory housing 13, so that the accessory housing 13 can be firmly clamped after being inserted into the card slot 102.
Optionally, the two sides of the notch of the air outlet groove 101 are both provided with a clamping groove 102, and the size of the clamping groove 102 is matched with the thickness and width of the auxiliary shell 13. After the auxiliary shell 13 is snapped into the snap groove 102, the outer surface of the auxiliary shell 13 is flush with the outer surface of the main body 10 to form a complete outer surface of the acoustic chamber body 1.
In one embodiment, as shown in fig. 2 and 3, the main body 10 includes a middle case 14, an upper case 15, and a lower case 16.
The middle shell 14 is a cylindrical structure, the upper shell 15 is arranged at the top of the middle shell 14, the lower shell 16 is arranged at the bottom of the middle shell 14, and the first mounting hole 141 and the air duct channel are both arranged on the middle shell 15.
In this embodiment, the first mounting hole 141 and the duct passage are provided on the middle case 14, and the middle case 14 serves as a side wall of the main body 10, so that the speaker 2 mounted to the first mounting hole 141 and the duct passage are located at a lateral position of the main body 10. The loudspeaker 2 projects laterally of the body 10, the second end 12 of the ductwork channel being located in the centre housing 14, sound reflected by the second end 12 also projecting laterally of the body 10. The directivity of the medium and high frequency is stronger, so that a user can obtain better medium and high frequency sound effect.
The shape and structure of the duct channel are matched with those of the middle shell 14, for example, the duct channel is distributed along the middle shell 14 of the cylindrical structure, so that the duct channel is in an arc-shaped pipe structure extending along the side wall of the middle shell 14. The first end 11 is located at one end of the arc to communicate with the interior of the tubular structure and the second end 12 is located at the other end of the arc to communicate with the exterior of the tubular structure.
In one embodiment, the acoustic chamber body 1 is provided with a tubular structure, and the tubular structure is used as an air duct channel.
One end of the tubular structure arranged on the sound cavity body 1 is communicated with the interior of the sound cavity body 1 to form a first end 11 of the air pipe channel, and the other end of the tubular structure is positioned outside the sound cavity body 1 to form a second end 12 of the air pipe channel.
The shape of the air pipe channel can be more conveniently set by arranging the tubular structure so as to adapt to the shape of the sound cavity body 1. For example, the tubular structure is provided as an arc-shaped tube so as to be able to be closely disposed outside the acoustic chamber body 1.
Further, the tubular structure is provided in a shape having a smaller thickness, for example, the tubular structure is a flat pipe. The wall thickness of the acoustic cavity body 1 occupied by the tubular structure is reduced, and the volume of the acoustic cavity structure is reduced.
In one embodiment, the sound cavity body 1 is provided with a hollow structure, and the tubular structure is installed in the hollow structure.
In this embodiment, the hollow structure is provided on the acoustic cavity body 1 to provide a space, and the tubular structure is installed in the hollow structure. One end of the tubular structure extends into the interior of the acoustic chamber body 1 to serve as the first end 11 of the air duct channel. The other end of the tubular structure extends outside the acoustic chamber body 1 to serve as the second end 12 of the duct channel.
The tubular structure is embedded into the hollow structure to form sealing with the hollow structure, for example, the tubular structure and the hollow structure are fixed by sealant. The tubular structure is arranged in the hollow structure, so that the interior and the exterior of the sound cavity body 1 are communicated through an air pipe channel.
The sound cavity structure is simple in structure, the sealing effect of the air pipe channel is good, and the sound cavity structure can be communicated with the inside and the outside of the sound cavity body 1 only through the first end 11 and the second end 12.
In one embodiment, as shown in fig. 4 and 5, the acoustic chamber body 1 includes a main body 10 and a housing.
The first mounting hole 141 is disposed on the main body 10, and an air outlet groove 101 is formed in a side wall of the main body 10.
The main body 10 is located inside the housing, and a second mounting hole is formed in the housing, and the second mounting hole is opposite to the first mounting hole 141.
The first side of air-out groove 101 with the inside intercommunication of body 10 is in order to form first end 11, the shell covers air-out groove 101, the position that the shell corresponds with the second side of air-out groove 101 is provided with opening 181, in order to form second end 12.
In this embodiment, the air outlet groove 101 on the sidewall of the main body 10 and the portion of the outer shell covering the air outlet groove 101 form an air duct channel, which simplifies the structure of the air duct channel. The part of the air outlet groove 101 covered by the outer shell can be a side wall with the same shape as the side wall of the main body 10, so that the part of the outer shell and the air outlet groove 101 can form a pipe wall of an air pipe channel. The opening 180 in the housing corresponds to the second side of the air-out slot 101 to form the mouth of the second end 12 of the air duct channel at the second side of the air-out slot 101.
The casing cladding can also be the air-out groove structure that has and air-out groove 101 corresponds at the part of air-out groove 101 to this air-out groove structure lock forms the tuber pipe passageway on air-out groove 101.
Optionally, a mesh cover 182 is disposed on the second mounting hole, and the mesh cover 182 can protect the speaker 2 disposed in the first mounting hole 141, so as to prevent the structure of the speaker 2 from being exposed outside the acoustic cavity structure too much.
Alternatively, as shown in fig. 4 and 5, the housing includes a bottom plate 17, a side plate 18, and a top plate 19.
The side plates 18 are disposed around the bottom plate 17 to form a groove structure, the top plate 19 is disposed on the top of the groove structure, and the main body 10 is disposed in the groove structure.
The side plate 18 has a second mounting hole opposite to the speaker 2 and an opening 181. In the embodiment with two ductwork channels, the side panel 18 has two openings 181, wherein one of said openings 181 is opposite the second side of one of the air outlet slots 101, and wherein the other of said openings 181 is opposite the second side of the other of said air outlet slots 101. The second ends 12 of the two duct channels are formed corresponding to the two air outlet slots 101.
In this embodiment, the bottom plate 17, the side plates 18, and the top plate 19 form a housing to protect the main body 10, the speaker 2, and components provided inside the main body 10.
The sound wave emitted from the speaker 2 is emitted through the second mounting hole, and the mesh cover 182 on the second mounting hole is a mesh structure. The grid structure can protect the structure of the loudspeaker 2 and does not influence the outward radiation of sound waves of the loudspeaker 2.
The sound waves emitted from the opening 181 by reflection can be radiated to the outside through the side plate 18. In the embodiment of two duct channels, optionally, the two openings 181 are symmetrically distributed about the second mounting hole, which improves the aesthetic appearance of the sound box.
In one embodiment, the acoustic chamber body 1 is integrally formed with the ductwork channel.
In this embodiment, the duct channels are integrally formed on the acoustic chamber body 1, so that the structure of the acoustic chamber structure is simpler. The formed acoustic cavity body 1 is provided with a first end 11 and a second end 12 of an air duct channel, wherein the first end 11 is a pipe orifice positioned inside the acoustic cavity body 1, and the second end 12 is a pipe orifice positioned outside the acoustic cavity body 1.
The integrated molding can be formed by an injection molding process, and the air duct channel formed under the process does not need additional assembly structures and steps, so that the problem of channel sealing caused by assembly is avoided, and the reliability of the air duct channel is improved.
Optionally, the acoustic cavity structure includes two air duct channels, the two air duct channels are symmetrically disposed, and the second ends 12 of the two air duct channels are symmetrically distributed on two sides of the first mounting hole 141.
In this embodiment, the two duct channels improve the propagation path of the sound waves radiated from the speaker 2 to the inside of the acoustic chamber body 1. For example, the sound waves may have been refracted/reflected by both ductwork channels to the second end 12 and radiated outside the acoustic cavity structure.
The two second ends 12 are located at both sides of the first mounting hole 141 and symmetrically distributed, and even if the sound waves radiated from the second ends 12 can perform effective bass reproduction with the equal sound waves emitted from the speaker 2, the aesthetic appearance can be improved.
In one embodiment, as shown in fig. 1 to 3, a sinking groove 140 is provided on the acoustic chamber body 1, and the first mounting hole 141 is provided in the sinking groove 140.
In this embodiment, the sink 140 forms a mounting space outside the first mounting hole 141 to make it easier to mount the speaker 2 in the first mounting hole 141.
For example, a part of the speaker 2 is inserted into the first mounting hole 141, and a part of the structure of the speaker 2 is overlapped on the sink 140. This can reduce the thickness of the stack of the speaker 2 and the acoustic chamber body 1, thereby reducing the size of the cabinet in the radial direction of the center case 14.
For example, the speaker 2 is disposed behind the first mounting hole 141, and a part of the structure of the speaker 2 is overlapped on the sink 140. Such a structure prevents the exterior of the speaker 2 from protruding beyond the outer surface of the acoustic chamber body 1, thereby avoiding an increase in the size of the speaker 2 in the radial direction.
The sink groove 140 is provided with a screw hole, the speaker 2 is provided with a connection hole corresponding to the screw hole, and the speaker 2 is connected with the sink groove 140 by a screw, so that the speaker 2 is mounted in the first mounting hole 141.
In one embodiment, an acoustic enclosure is provided that includes the acoustic cavity structure of the above embodiments.
In this embodiment, the sound box has the excellent effects in the above-described acoustic cavity structure. The loudspeaker box is simple in structure and easy to process and produce. The loudspeaker box can have a low-frequency playback effect and improve a low-frequency sound production effect.
In one embodiment, the loudspeaker of the present disclosure and a conventional loudspeaker were subjected to simulation testing and compared.
Fig. 6 is a graph comparing frequency response curves of the sound box and a conventional sound box with the same volume in simulation effect according to an embodiment of the present disclosure.
Fig. 7 is a comparison graph of impedance curves of the sound box according to an embodiment of the present disclosure and a conventional sound box with the same volume under simulation effect.
With reference to fig. 6 and 7, it can be intuitively obtained that the low-frequency resonant frequency of the sound box of the present disclosure is lower, the low-frequency resonant frequency corresponding to the sound box of the present disclosure is about 120Hz, and the low-frequency resonant frequency corresponding to the conventional sound box with the same volume is about 300 Hz.
The loudspeaker 2 of the sound box is arranged on the side wall, so that the sound box has higher sound pressure level and high loudness in a middle and high frequency range (800Hz-10000Hz), and the sound production characteristic of the middle and high frequency is effectively improved.
Fig. 8 is a comparison graph of the measured frequency response curve and the simulated frequency response curve of the sound box in the embodiment of the present disclosure.
The simulation result and the data of the actual measurement result are matched visually.
Fig. 9 is a comparison graph of the measured frequency response curve and distortion curve of the sound box in one embodiment of the present disclosure and the frequency response curve and distortion curve of the conventional sound box.
It can be intuitively obtained that the low frequency resonance frequency of the disclosed loudspeaker box is less than the low frequency resonance frequency of a conventional loudspeaker box of the same volume. At the same time, sound pressure level levels perform better in most frequency bands. The distortion curve of the loudspeaker of the present disclosure tends to plateau more quickly, while the distortion of a conventional loudspeaker of the same volume is greater.
In the above embodiments, the differences between the embodiments are described in emphasis, and different optimization features between the embodiments can be combined to form a better embodiment as long as the differences are not contradictory, and further description is omitted here in consideration of brevity of the text.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. A sound cavity structure is characterized by comprising a sound cavity body and an air pipe channel arranged on the sound cavity body;
the sound cavity body is provided with a first mounting hole, and the first mounting hole is used for mounting a loudspeaker;
the first end of the air pipe channel is communicated with the interior of the sound cavity body, and the second end of the air pipe channel is located outside the sound cavity body.
2. The acoustic chamber structure of claim 1 wherein the acoustic chamber body comprises a main body and an appendage;
the first mounting hole is formed in the main body, the auxiliary shell covers the main body, and the air duct channel is formed between the main body and the auxiliary shell.
3. The acoustic cavity structure according to claim 2, wherein the main body is provided with an air outlet groove, and the auxiliary case covers the air outlet groove to form the air duct channel;
wherein, the first side of air-out groove with the inside intercommunication of body, in order to form first end, the second side of air-out groove with attach the shell and dodge, in order to form the second end.
4. The acoustic cavity structure according to claim 2, wherein the notch of the air outlet groove has a slot, and the auxiliary housing is inserted into the slot.
5. The acoustic chamber structure according to claim 1, wherein said acoustic chamber body is provided with a tubular structure, said tubular structure being used as said duct channel.
6. The acoustic cavity structure according to claim 5, wherein the acoustic cavity body is provided with a hollow structure, and the tubular structure is installed in the hollow structure.
7. The acoustic chamber structure of claim 1 wherein the acoustic chamber body comprises a main body and a housing;
the first mounting hole is formed in the main body, and an air outlet groove is formed in the side wall of the main body;
the main body is positioned in the shell, a second mounting hole is formed in the shell, and the second mounting hole is opposite to the first mounting hole;
the first side of air-out groove with the inside intercommunication of body, in order to form first end, the shell covers the air-out groove, the position that the shell corresponds with the second side of air-out groove is provided with the opening, in order to form the second end.
8. The acoustic cavity structure of claim 1, wherein the acoustic cavity body is integrally formed with the duct channel.
9. The structure of any one of claims 1 to 8, comprising two air duct channels, wherein the two air duct channels are symmetrically arranged, and second ends of the two air duct channels are symmetrically distributed on two sides of the first mounting hole.
10. An acoustic enclosure comprising an acoustic cavity structure according to any of claims 1-9.
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| CN202110160915.9A CN112929770A (en) | 2021-02-05 | 2021-02-05 | Sound cavity structure and sound box |
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| CN207427467U (en) * | 2017-10-31 | 2018-05-29 | 珠海市魅族科技有限公司 | Terminal device |
| CN213368126U (en) * | 2020-09-30 | 2021-06-04 | 陈伟刚 | Sound box and electronic equipment |
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2021
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| US20050117768A1 (en) * | 2002-03-15 | 2005-06-02 | Sharp Kabushikl Kaisha | Bass reflex type speaker device, mounting structure and mounting method for speaker device |
| US20070215407A1 (en) * | 2006-03-20 | 2007-09-20 | Kun-Tien Chiang | Loudspeaker device |
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| CN207427467U (en) * | 2017-10-31 | 2018-05-29 | 珠海市魅族科技有限公司 | Terminal device |
| CN213368126U (en) * | 2020-09-30 | 2021-06-04 | 陈伟刚 | Sound box and electronic equipment |
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Application publication date: 20210608 |