CN117119360A - Sounding device - Google Patents
Sounding device Download PDFInfo
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- CN117119360A CN117119360A CN202311371090.0A CN202311371090A CN117119360A CN 117119360 A CN117119360 A CN 117119360A CN 202311371090 A CN202311371090 A CN 202311371090A CN 117119360 A CN117119360 A CN 117119360A
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- cavity
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- 229910000831 Steel Inorganic materials 0.000 claims description 51
- 239000010959 steel Substances 0.000 claims description 51
- 239000000178 monomer Substances 0.000 claims description 20
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
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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
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Abstract
The invention relates to the field of electroacoustic conversion, in particular to a sound generating device, which comprises a shell and a sound generating unit, wherein the shell is provided with an accommodating space and a sound guiding channel, the sound generating unit is accommodated in the accommodating space and is communicated with the outside through the sound guiding channel, the sound generating unit comprises a first basin frame, a first vibration system, a magnetic circuit system, a second basin frame, a second vibration system and a conductive insert, one end of the second basin frame, which is far away from the magnetic circuit system, is abutted to the shell and divides a front sound cavity into a first front sound cavity and a second front sound cavity, and the sound guiding channel is communicated with the first front sound cavity; the second basin frame is provided with a first notch and a second notch which penetrate through the second basin frame along the vibration direction perpendicular to the second vibrating diaphragm, the first notch and the second notch are opposite at intervals, and the size of the first notch is smaller than that of the second notch; the first notch and the second notch are communicated with the second front sound cavity and the first front sound cavity. Compared with the related art, the acoustic device has better acoustic performance and drainage performance.
Description
Technical Field
The invention relates to the field of electroacoustic conversion, in particular to a sound generating device.
Background
The sound generating device is a transducer device for converting an electric signal into an acoustic signal and is mainly divided into a single vibration system and a double vibration system, wherein the sound generating device in the double vibration system mode mainly comprises a first vibration system fixed on a basin frame and used for generating bass and a second vibration system fixed on a magnetic circuit system and used for generating treble.
In the sounding device of the dual vibration system mode of the related art, the first vibration system and the second vibration system make sound through the mutually isolated sound guide channels formed by the closed structure, the first vibration system generating high sound often uses smaller sound guide channels, on the other hand, the closed structure can also reduce the drainage performance of the sounding device, so that the high-audio frequency band emitted by the sounding device of the related art is too narrow, the drainage performance is insufficient, and the acoustic performance of the sounding device in the water inlet environment is reduced.
Therefore, there is a need to provide a new sound emitting device to solve the above-mentioned technical problems.
Disclosure of Invention
The invention aims to provide a sound generating device with better acoustic performance in a double-vibration system mode.
In order to achieve the above object, the present invention provides a sound emitting device including: the sound guide device comprises a shell with an accommodating space, a sound guide channel formed in the shell and a sound generating monomer accommodated in the accommodating space, wherein the shell is formed by combining a top cover, an upper cover and a bottom cover; the sound generating unit is fixed on the shell and divides the accommodating space into a front sound cavity and a rear cavity, the front sound cavity is communicated with the outside through the sound guide channel, and the front sound cavity is formed by the sound guide channel and the front sound cavity together; the sounding monomer includes:
the first basin frame is supported and fixed on the shell;
the first vibration system comprises a first vibrating diaphragm, a first voice coil and a second vibrating diaphragm, wherein the outer periphery of the first vibrating diaphragm is fixed on the first basin frame;
the magnetic circuit system is fixed on the first basin frame, a first magnetic gap and a second magnetic gap are arranged on one side, close to the first vibration system, of the magnetic circuit system, and the first magnetic gaps are arranged around the second magnetic gaps at intervals; the first voice coil is inserted and suspended in the first magnetic gap;
the second basin frame is fixed at the top of the magnetic circuit system;
the second vibration system comprises a second vibrating diaphragm and a second voice coil, the outer periphery of the second vibrating diaphragm is fixed on one side, far away from the magnetic circuit system, of the second basin frame, the second voice coil drives the second vibrating diaphragm to vibrate and sound, and the second voice coil is inserted and arranged in the second magnetic gap in a suspending manner; the method comprises the steps of,
the conductive insert penetrates from the bottom of the magnetic circuit system to the top of the magnetic circuit system, extends to the lower part of the second vibrating diaphragm and is electrically connected with the second voice coil;
the second basin frame is abutted to the shell at one end far away from the magnetic circuit system and divides the front sound cavity into a first front sound cavity and a second front sound cavity, wherein the first front sound cavity is formed by surrounding the upper cover of the shell, the side wall of the bottom cover and the sounding monomer together, the second front sound cavity is formed by surrounding the top cover of the shell and the sounding monomer together, and the sound guide channel is communicated with the first front sound cavity; the second basin frame is provided with a first notch and a second notch which penetrate through the second basin frame along the vibration direction perpendicular to the second vibrating diaphragm, the first notch is opposite to the second notch at intervals, and the size of the first notch is smaller than that of the second notch; the first notch and the second notch both communicate the second front acoustic cavity with the first front acoustic cavity.
Preferably, the first notch is located at a side of the second frame close to the sound guiding channel, and the second notch is located at a side of the second frame far away from the sound guiding channel.
Preferably, the first notch and the second notch are formed by the downward recess of one end, far away from the magnetic circuit, of the second basin frame, the depth of the first notch is smaller than that of the second notch, and the width of the first notch is smaller than that of the second notch.
Preferably, an end of the conductive insert, which is far away from the second diaphragm, passes through the housing and is at least partially exposed to the housing.
Preferably, the magnetic circuit system comprises an annular upper clamping plate, a lower clamping plate, main magnetic steel, a first auxiliary magnetic steel, a pole core and a second auxiliary magnetic steel, wherein the upper clamping plate is fixedly overlapped with the first auxiliary magnetic steel and fixedly connected with the first basin frame; the main magnetic steel is annular and is fixedly overlapped on the lower clamping plate, the first auxiliary magnetic steel is fixedly overlapped on the lower clamping plate and is arranged around the main magnetic steel, and the first magnetic gap is formed between the main magnetic steel and the first auxiliary magnetic steel at intervals;
the pole core comprises a pole core body which is annular and is overlapped and fixed on the main magnetic steel, and a pole core extending part which is annular and is bent and extended from the inner periphery side of the pole core body to the direction away from the lower clamping plate, and the pole core extending part surrounds the conductive insert;
the second auxiliary magnetic steel is overlapped and fixed on one side of the pole core body, which is close to the vibration system, and surrounds the pole core extension part and forms the second magnetic gap at intervals.
Preferably, the magnetic circuit system further comprises an auxiliary pole core which is overlapped and fixed on one side of the second auxiliary magnetic steel close to the first vibration system, the auxiliary pole core is annular and surrounds the conductive insert, and the second basin frame is connected with the outer periphery side of the auxiliary pole core.
Preferably, the first vibration system further includes a first skeleton including a skeleton body in a ring shape for serving as the first vibration portion and a skeleton fixing portion bent and extended downward from an outer peripheral edge of the skeleton body.
Preferably, the first vibrating diaphragm comprises a first annular folding ring, a second annular folding ring which is arranged at intervals on the inner side of the first folding ring, and a first annular vibrating part which is bent, extended and connected to the outer periphery of the second folding ring by the inner periphery of the first folding ring, wherein the outer periphery of the first folding ring is fixed on the first basin frame, and the inner periphery of the second folding ring is fixed on one side of the first auxiliary magnetic steel far away from the main magnetic steel; the first voice coil is fixed on one side of the first vibration part, which is close to the magnetic circuit system.
Preferably, the inner periphery of the second folding ring is clamped and fixed between the second basin frame and the main magnetic steel.
Preferably, the second vibrating diaphragm includes a second vibrating portion, a third ring extending outwards from an outer periphery of the second vibrating portion and having a ring shape, and a second dome covering the second vibrating portion, wherein the outer periphery of the third ring is fixed on one side of the second frame away from the first auxiliary magnetic steel, and the second voice coil is fixed on the second vibrating portion.
Compared with the prior art, the sound generating device of the invention comprises: the sound guide device comprises a shell with an accommodating space, a sound guide channel formed in the shell and a sound generating monomer accommodated in the accommodating space, wherein the shell is formed by combining a top cover, an upper cover and a bottom cover; the sound generating unit is fixed on the shell and divides the accommodating space into a front sound cavity and a rear cavity, the front sound cavity is communicated with the outside through the sound guide channel, and the front sound cavity is formed by the sound guide channel and the front sound cavity together; the sounding monomer includes: the first basin frame is supported and fixed on the shell; the first vibration system comprises a first vibrating diaphragm, a first voice coil and a second vibrating diaphragm, wherein the outer periphery of the first vibrating diaphragm is fixed on the first basin frame; the magnetic circuit system is fixed on the first basin frame, a first magnetic gap and a second magnetic gap are arranged on one side, close to the first vibration system, of the magnetic circuit system, and the first magnetic gaps are arranged around the second magnetic gaps at intervals; the first voice coil is inserted and suspended in the first magnetic gap; the second basin frame is fixed at the top of the magnetic circuit system; the second vibration system comprises a second vibrating diaphragm and a second voice coil, the outer periphery of the second vibrating diaphragm is fixed on one side, far away from the magnetic circuit system, of the second basin frame, the second voice coil drives the second vibrating diaphragm to vibrate and sound, and the second voice coil is inserted and arranged in the second magnetic gap in a suspending manner; the conductive insert penetrates from the bottom of the magnetic circuit system to the top of the magnetic circuit system, extends to the lower part of the second vibrating diaphragm and is electrically connected with the second voice coil; the second basin frame is abutted to the shell at one end far away from the magnetic circuit system and divides the front sound cavity into a first front sound cavity and a second front sound cavity, wherein the first front sound cavity is formed by surrounding the upper cover of the shell, the side wall of the bottom cover and the sounding monomer together, the second front sound cavity is formed by surrounding the top cover of the shell and the sounding monomer together, and the sound guide channel is communicated with the first front sound cavity; the second basin frame is provided with a first notch and a second notch which penetrate through the second basin frame along the vibration direction perpendicular to the second vibrating diaphragm, the first notch is opposite to the second notch at intervals, and the size of the first notch is smaller than that of the second notch; the first notch and the second notch both communicate the second front acoustic cavity with the first front acoustic cavity. The sound generating device is provided with a second basin frame with a contralateral notch design in the high-pitch vibration system, wherein the larger second notch is communicated with the front sound cavity, so that high-pitch airflow is converged with the front sound cavity after coming out from the direction opposite to the sound guiding channel, the conduction channel of the high-pitch airflow is prolonged, the high-pitch frequency band of the sound generating device is further improved, and the high-frequency sound effect is improved; the smaller first notch is arranged opposite to the sound guide channel, so that the water drainage efficiency of the sound generating device can be improved through the first notch, and the acoustic performance and usability of the sound generating device in a water inlet environment are improved.
Drawings
For a clearer description of the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
fig. 1 is a schematic perspective view of a sound generating device according to an embodiment of the present invention;
fig. 2 is an exploded schematic view of a three-dimensional structure of a sound emitting device according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1;
fig. 5 is a schematic structural diagram of a second basin stand in the sound emitting device according to the embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 5, an embodiment of the present invention provides a sound emitting device 100, where the sound emitting device 100 includes a housing 1 and a sound emitting unit 2.
The housing 1 has an accommodating space and an acoustic guide channel 14 formed therein. In this embodiment, in order to facilitate assembly of the sound generating device 100, the housing 1 specifically includes a top cover 11, an upper cover 12, a sound guiding channel 14, and a bottom cover 13.
The sound generating unit 2 is accommodated in the accommodating space, the sound generating unit 2 is fixed on the shell 1 and divides the accommodating space into a front sound cavity and a rear cavity, the front sound cavity is communicated with the outside through the sound guide channel 14, and the front sound cavity is formed by the sound guide channel 14 and the front sound cavity together; after the sounding monomer 2 is fixed on the shell 1, the sounding monomer 2 and the bottom cover 13 form a rear cavity together. The sounding unit 2 comprises a first basin frame 21, a first vibration system 22, a magnetic circuit system 23, a second basin frame 24, a second vibration system 25 and a conductive insert 26:
the first basin stand 21 is supported and fixed on the shell 1 and is used for supporting a first vibration system 22 and a magnetic circuit system 23. In this embodiment, the first basin stand 21 has a ring-shaped structure surrounded by a metal sheet.
The first vibration system 22 includes a first diaphragm 221 with an outer periphery fixed to the first frame 21, and a first voice coil 222 driving the first diaphragm 221 to vibrate and sound. In this embodiment, the first vibration system 22 is configured to emit low-frequency sound.
The magnetic circuit system 23 is fixed on the first basin frame 21, a first magnetic gap 236 and a second magnetic gap 237 are arranged on one side, close to the first vibration system 22, of the magnetic circuit system 23, and the first magnetic gap 236 surrounds the second magnetic gap 237 and is arranged at intervals; the first voice coil 222 is interposed and suspended within the first magnetic gap 236.
The second basin stand 24 is fixed on the top of the magnetic circuit system 23 and is used for supporting the second vibration system 25.
The second vibration system 25 includes a second diaphragm 251 with an outer periphery fixed on a side of the second frame 24 away from the magnetic circuit system 23, and a second voice coil 252 driving the second diaphragm 251 to vibrate and sound, where the second voice coil 252 is inserted and suspended in the second magnetic gap 237. In this embodiment, the second vibration system 25 is configured to emit high-frequency sound.
That is, the first vibration system 22 and the second vibration system 25 share the magnetic circuit system 23, and sounds in different frequency bands are generated by driving the magnetic circuit system 23.
The conductive insert 26 is provided with a conductive terminal 261 in a penetrating manner, and the conductive insert 26 penetrates from the bottom of the magnetic circuit system 23 to the top of the magnetic circuit system 23 and extends to the lower portion of the second diaphragm 251, and is electrically connected with the second voice coil 252 through the conductive terminal 261. The electric signal of the first voice coil 222 is supplied through the conductive member 224 fixed to the first frame 21.
Specifically, in this embodiment, an end of the second basin stand 24 away from the magnetic circuit 23 abuts against the housing 1, and separates the front acoustic cavity into a first front acoustic cavity and a second front acoustic cavity, where the upper cover 12 of the housing 1, the side wall of the bottom cover 13, and the sounding monomer 2 together enclose the first front acoustic cavity, the top cover 11 of the housing 1 and the sounding monomer 2 together enclose the second front acoustic cavity, and the sound guide channel 14 is communicated with the first front acoustic cavity; the second frame 24 is provided with a first notch 241 and a second notch 242 penetrating through the second frame along a direction perpendicular to the vibration direction of the second diaphragm 251, the first notch 241 is opposite to the second notch 242 at intervals, and the size of the first notch 241 is smaller than the size of the second notch 242; the first notch 241 and the second notch 242 both communicate the second front acoustic chamber with the first front acoustic chamber.
Specifically, in the present embodiment, when the second voice coil 252 drives the second diaphragm 251 to vibrate to emit high-frequency sound, the high-frequency sound is emitted from the sound guide channel 14 by the high-frequency airflow generated in the second front sound cavity being conducted into the first front sound cavity through the first notch 241 and the second notch 242. In order to realize such a design, when the second frame 24 is provided with a notch, the peripheral edge of the second diaphragm 251 (the fixing portion of the second diaphragm 24) needs to be adaptively shaped as a notch, so as to realize that the peripheral edge of the second diaphragm 251 is fixedly attached to the second frame 24.
Specifically, in the present embodiment, the first notch 241 is located on a side of the second frame 24 close to the sound guiding channel 14, and the second notch 242 is located on a side of the second frame 24 far from the sound guiding channel 14. The first notch 241 and the second notch 242 are disposed at different positions to generate different effects, where the first notch 241 is disposed through the second basin frame 24 on a side close to the sound guiding channel 14, so that the high-pitched airflow can be transmitted to the sound guiding channel 14 through the first notch 241 without being conducted through the first front sound cavity, and in the case that the second front sound cavity is filled with water, the design can enable the water vapor to be carried out of the second front sound cavity through the effect of the high-pitched airflow and be discharged through the sound guiding channel 14, thereby improving the drainage performance of the sound generating device 100 and optimizing the acoustic effect in the water inlet environment; the second notch 242 is disposed through the second basin frame 24 on a side far away from the sound guide channel 14, at this time, the first front sound cavity is communicated with the second front sound cavity, so that the high-frequency effect of the sound generating device 100 can be improved when the sound airflow finally passes out of the sound guide channel 14, because the space of the first front sound cavity is far greater than that of the second front sound cavity, and the frequency band of the high-frequency airflow is expanded.
Specifically, in this embodiment, the first notch 241 and the second notch 242 are formed by the end of the second basin frame 24 away from the magnetic circuit 23 being recessed downward, and the depth of the first notch 241 is smaller than the depth of the second notch 241, and the width of the first notch 241 is smaller than the width of the second notch 242. By such a design, the opening size of the first notch 241 is smaller than the second notch 242. In this embodiment, the first notch 241 and the second notch 242 are disposed at different positions to generate different effects, where the first notch 241 is used for assisting in drainage, the second notch 242 is used for widening a high-frequency band of the front acoustic cavity, in order to ensure that the opening design of the first notch 241 does not affect the acoustic performance of the acoustic device too much, the opening of the first notch 241 is smaller than the second notch 242, so that the high-frequency airflow can be conducted into the front acoustic cavity through the second notch 242 with a larger opening, and the first notch 241 with a smaller opening can meet the drainage performance requirement of the acoustic device 100 on the premise that the high-frequency airflow is not leaked too much.
Specifically, in this embodiment, the magnetic circuit 23 is disposed around the conductive insert 26, one end of the conductive insert 26 is connected to the second voice coil 252, and one end of the conductive insert 26, which is far away from the second diaphragm 24, is exposed to the housing 1 at least partially after passing through the housing 1.
Specifically, in this embodiment, the casing 1 is provided with a through hole penetrating therethrough, the sounding unit 2 further includes a lower clamping plate 27 fixed to the casing 1 and disposed around the conductive insert 26, and the lower clamping plate 27 is covered on the through hole and exposed to the casing 1, and this structure is provided to make the magnetic circuit system 23 fully use of the space of the thickness of the casing 1 under the condition of ensuring the same back cavity volume, so that the sounding device is made thinner;
the magnetic circuit system 23 further comprises a main magnetic steel 231, a first auxiliary magnetic steel 232, a pole core 233, a second auxiliary magnetic steel 234 and an upper clamping plate 235, wherein the upper clamping plate 235 is fixedly overlapped with the first auxiliary magnetic steel 232 and fixedly connected with the first basin frame 21; the main magnetic steel 231 is annular and is fixedly overlapped with the lower clamping plate 27, the first auxiliary magnetic steel 232 is fixedly overlapped with the lower clamping plate 27 and is arranged around the main magnetic steel 231, and the main magnetic steel 231 and the second auxiliary magnetic steel 234 are jointly spaced from the first auxiliary magnetic steel 232 to form a first magnetic gap 236;
the pole core 233 comprises a pole core body 2331 which is annular and is overlapped and fixed on the main magnetic steel 231, and a pole core extension part 2332 which is annular and is bent and extended from the inner periphery side of the pole core body 2331 to the direction away from the lower clamping plate 27, wherein the pole core extension part 2332 surrounds the conductive insert 26;
the second auxiliary magnetic steel 234 is stacked and fixed on one side of the pole core body 2331 close to the vibration system, and the second auxiliary magnetic steel 234 surrounds the pole core extension portion 2332 and forms the second magnetic gap 237 at intervals.
Specifically, in this embodiment, in order to further improve the magnetic field performance of the magnetic circuit system 23, the magnetic circuit system 23 further includes a secondary pole core 238 that is stacked and fixed on a side of the second secondary magnetic steel 234 near the first vibration system 22, the secondary pole core 238 is annular and surrounds the conductive insert 26, and the second basin stand 24 is connected to an outer peripheral side of the secondary pole core 238, so that the loss of magnetic force lines of the second secondary magnetic steel 234 is effectively reduced due to such design. The inner peripheral side of the second frame 24 is fixedly connected with the outer peripheral side of the auxiliary pole 238, so as to improve the structural stability of the second frame 24.
Specifically, in the present embodiment, the first vibration system 22 further includes a first skeleton 223, and the first skeleton 223 includes a ring-shaped skeleton body 2231 serving as the first vibration part 2213, and a skeleton fixing part 2232 extending from an outer peripheral edge of the skeleton body 2231 in a downward bending manner.
Specifically, in the present embodiment, the first diaphragm 221 includes a first annular ring 2211, a second annular ring 2212 disposed at intervals inside the first ring 2211, and a first annular vibration portion 2213 extending from an inner periphery of the first ring 2211 in a bending manner and connected to an outer periphery of the second ring 2212, wherein the outer periphery of the first ring 2211 is fixed to the first frame 21, and an inner periphery of the second ring 2212 is fixed to a side of the first sub-magnetic steel 232 away from the main magnetic steel 231; the first voice coil 222 is fixed to a side of the first vibration part 2213 near the magnetic circuit system 23. The top of the first diaphragm 221 is further provided with a ring-shaped first dome 2214. The inner periphery of the second ring 2212 is clamped and fixed between the second frame 24 and the main magnetic steel 231.
Specifically, in this embodiment, the second diaphragm 251 includes a second vibration portion 2511, a third ring 2512 extending outward from an outer periphery of the second vibration portion 2511 and having a ring shape, and a second dome 2513 disposed on the second vibration portion 2511 in a covering manner, wherein the outer periphery of the third ring 2512 is fixed to a side of the second frame 24 away from the first sub-magnetic steel 232, and the second voice coil 252 is fixed to the second vibration portion 2511.
Compared with the prior art, the sound generating device of the invention comprises: the sound guide device comprises a shell with an accommodating space, a sound guide channel formed in the shell and a sound generating monomer accommodated in the accommodating space, wherein the shell is formed by combining a top cover, an upper cover and a bottom cover; the sound generating unit is fixed on the shell and divides the accommodating space into a front sound cavity and a rear cavity, the front sound cavity is communicated with the outside through the sound guide channel, and the front sound cavity is formed by the sound guide channel and the front sound cavity together; the sounding monomer includes: the first basin frame is supported and fixed on the shell; the first vibration system comprises a first vibrating diaphragm, a first voice coil and a second vibrating diaphragm, wherein the outer periphery of the first vibrating diaphragm is fixed on the first basin frame; the magnetic circuit system is fixed on the first basin frame, a first magnetic gap and a second magnetic gap are arranged on one side, close to the first vibration system, of the magnetic circuit system, and the first magnetic gaps are arranged around the second magnetic gaps at intervals; the first voice coil is inserted and suspended in the first magnetic gap; the second basin frame is fixed at the top of the magnetic circuit system; the second vibration system comprises a second vibrating diaphragm and a second voice coil, the outer periphery of the second vibrating diaphragm is fixed on one side, far away from the magnetic circuit system, of the second basin frame, the second voice coil drives the second vibrating diaphragm to vibrate and sound, and the second voice coil is inserted and arranged in the second magnetic gap in a suspending manner; the conductive insert penetrates from the bottom of the magnetic circuit system to the top of the magnetic circuit system, extends to the lower part of the second vibrating diaphragm and is electrically connected with the second voice coil; the second basin frame is abutted to the shell at one end far away from the magnetic circuit system and divides the front sound cavity into a first front sound cavity and a second front sound cavity, wherein the first front sound cavity is formed by surrounding the upper cover of the shell, the side wall of the bottom cover and the sounding monomer together, the second front sound cavity is formed by surrounding the top cover of the shell and the sounding monomer together, and the sound guide channel is communicated with the first front sound cavity; the second basin frame is provided with a first notch and a second notch which penetrate through the second basin frame along the vibration direction perpendicular to the second vibrating diaphragm, the first notch is opposite to the second notch at intervals, and the size of the first notch is smaller than that of the second notch; the first notch and the second notch both communicate the second front acoustic cavity with the first front acoustic cavity. The sound generating device is provided with a second basin frame with a contralateral notch design in the high-pitch vibration system, wherein the larger second notch is communicated with the front sound cavity, so that high-pitch airflow is converged with the front sound cavity after coming out from the direction opposite to the sound guiding channel, the conduction channel of the high-pitch airflow is prolonged, the high-pitch frequency band of the sound generating device is further improved, and the high-frequency sound effect is improved; the smaller first notch is arranged opposite to the sound guide channel, so that the water drainage efficiency of the sound generating device can be improved through the first notch, and the acoustic performance and usability of the sound generating device in a water inlet environment are improved.
While the invention has been described with respect to the above embodiments, it should be noted that modifications can be made by those skilled in the art without departing from the inventive concept, and these are all within the scope of the invention.
Claims (9)
1. A sound emitting device, the sound emitting device comprising: the sound guide device comprises a shell with an accommodating space, a sound guide channel formed in the shell and a sound generating monomer accommodated in the accommodating space, wherein the shell is formed by combining a top cover, an upper cover and a bottom cover; the sound generating unit is fixed on the shell and divides the accommodating space into a front sound cavity and a rear cavity, the front sound cavity is communicated with the outside through the sound guide channel, and the front sound cavity is formed by the sound guide channel and the front sound cavity together; the sounding monomer includes:
the first basin frame is supported and fixed on the shell;
the first vibration system comprises a first vibrating diaphragm, a first voice coil and a second vibrating diaphragm, wherein the outer periphery of the first vibrating diaphragm is fixed on the first basin frame;
the magnetic circuit system is fixed on the first basin frame, a first magnetic gap and a second magnetic gap are arranged on one side, close to the first vibration system, of the magnetic circuit system, and the first magnetic gaps are arranged around the second magnetic gaps at intervals; the first voice coil is inserted and suspended in the first magnetic gap;
the second basin frame is fixed at the top of the magnetic circuit system;
the second vibration system comprises a second vibrating diaphragm and a second voice coil, the outer periphery of the second vibrating diaphragm is fixed on one side, far away from the magnetic circuit system, of the second basin frame, the second voice coil drives the second vibrating diaphragm to vibrate and sound, and the second voice coil is inserted and arranged in the second magnetic gap in a suspending manner; the method comprises the steps of,
the conductive insert penetrates from the bottom of the magnetic circuit system to the top of the magnetic circuit system, extends to the lower part of the second vibrating diaphragm and is electrically connected with the second voice coil; it is characterized in that the method comprises the steps of,
the second basin frame is abutted to the shell at one end far away from the magnetic circuit system and divides the front sound cavity into a first front sound cavity and a second front sound cavity, wherein the first front sound cavity is formed by surrounding the upper cover of the shell, the side wall of the bottom cover and the sounding monomer together, the second front sound cavity is formed by surrounding the top cover of the shell and the sounding monomer together, and the sound guide channel is communicated with the first front sound cavity; the second basin frame is provided with a first notch and a second notch which penetrate through the second basin frame along the vibration direction perpendicular to the second vibrating diaphragm, the first notch is opposite to the second notch at intervals, and the size of the first notch is smaller than that of the second notch; the first notch and the second notch both communicate the second front acoustic cavity with the first front acoustic cavity; the first notch is positioned at one side of the second basin frame, which is close to the sound guide channel, and the second notch is positioned at one side of the second basin frame, which is far away from the sound guide channel.
2. The sound generating device as recited in claim 1, wherein the first notch and the second notch are formed by downward recessing an end of the second basin frame away from the magnetic circuit, the depth of the first notch is smaller than the depth of the second notch, and the width of the first notch is smaller than the width of the second notch.
3. The sound emitting device of claim 1, wherein an end of the conductive insert remote from the second diaphragm is at least partially exposed to the housing after passing through the housing.
4. The sound generating device according to claim 3, wherein the magnetic circuit system comprises an annular upper clamping plate, a lower clamping plate, a main magnetic steel, a first auxiliary magnetic steel, a pole core and a second auxiliary magnetic steel; the upper clamping plate is fixedly overlapped with the first auxiliary magnetic steel and fixedly connected with the first basin frame; the main magnetic steel is annular and is fixedly overlapped on the lower clamping plate, the first auxiliary magnetic steel is fixedly overlapped on the lower clamping plate and is arranged around the main magnetic steel, and the first magnetic gap is formed between the main magnetic steel and the first auxiliary magnetic steel at intervals;
the pole core comprises a pole core body which is annular and is overlapped and fixed on the main magnetic steel, and a pole core extending part which is annular and is bent and extended from the inner periphery side of the pole core body to the direction away from the lower clamping plate, and the pole core extending part surrounds the conductive insert;
the second auxiliary magnetic steel is overlapped and fixed on one side, close to the first vibration system, of the pole core body, and the second auxiliary magnetic steel surrounds the pole core extending part and forms the second magnetic gap at intervals.
5. The sound generating device as claimed in claim 4, wherein the magnetic circuit system further comprises a secondary pole core stacked and fixed on a side of the second secondary magnetic steel close to the vibration system, the secondary pole core is annular and surrounds the conductive insert, and the second basin frame is connected with an outer peripheral side of the secondary pole core.
6. The sound emitting device of claim 4, wherein the first vibration system further comprises a first skeleton comprising a skeleton body in the shape of a ring for serving as the first vibration portion and a skeleton fixing portion extending by bending downward from an outer peripheral edge of the skeleton body.
7. The sound generating device as recited in claim 1, wherein the first diaphragm comprises a first annular ring, a second annular ring disposed at an interval inside the first ring, and a first annular vibrating portion bent and extended from an inner periphery of the first ring and connected to an outer periphery of the second ring, the outer periphery of the first folding ring is fixed on the first basin frame, and the inner periphery of the second folding ring is fixed on one side, far away from the main magnetic steel, of the first auxiliary magnetic steel; the first voice coil is fixed on one side of the first vibration part, which is close to the magnetic circuit system.
8. The sound emitting device of claim 7, wherein the inner periphery of the second ring is sandwiched between the second frame and the main magnet.
9. The sound generating device as claimed in claim 1, wherein the second diaphragm comprises a second vibrating portion, a third ring extending outward from an outer periphery of the second vibrating portion and having a ring shape, and a second dome covering the second vibrating portion, the outer periphery of the third ring being fixed to a side of the second frame away from the first auxiliary magnetic steel, and the second voice coil being fixed to the second vibrating portion.
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| CN202311371090.0A CN117119360B (en) | 2023-10-23 | 2023-10-23 | Sounding device |
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