WO2022041295A1 - Sound producing unit and loudspeaker - Google Patents

Abstract

Provided in the present utility model are a sound producing unit and a loudspeaker. The sound producing unit comprises a magnetic circuit system and a vibration system; the magnetic circuit system comprises a main magnet, secondary magnets and edge magnets, the secondary magnets are provided at the periphery of the main magnet, the secondary magnets and the main magnet are spaced apart and form first magnetic gaps, the edge magnets are provided at the periphery of the secondary magnets, and the edge magnets and the secondary magnets are spaced apart and form second magnetic gaps; the vibration system comprises a first vibrating diaphragm, a second vibrating diaphragm, a first voice coil and a second voice coil, the first vibrating diaphragm and the second vibrating diaphragm are respectively located at two opposite sides of the magnetic circuit system; the first voice coil is fixed to the first vibrating diaphragm, and the first voice coil extends into the first magnetic gaps; the second voice coil is fixed to the second vibrating diaphragm, and the second voice coil extends into the second magnetic gaps. The loudspeaker comprises a housing and the sound producing unit. In the magnetic circuit system, the secondary magnets are common magnets, have good magnetic circuit symmetry, and form a dual-vibrating diaphragm sound producing unit in conjunction with the first vibrating diaphragm, the second vibrating diaphragm, the first voice coil and the second voice coil.

Description

Sound unit and speaker technical field

The utility model relates to the technical field of sound-generating devices, in particular to a sound-generating unit and a loudspeaker.

Background technique

The sound generator usually includes a vibration system and a magnetic circuit system. The vibration system includes a diaphragm, a dome and a voice coil. The voice coil is arranged on the diaphragm, and the magnetic circuit system is formed with a magnetic gap. The voice coil on the diaphragm is located in the magnetic gap.

The dual-diaphragm monomer usually has two sets of vibration systems, and the two sets of vibration systems share one magnetic circuit system, or the two sets of vibration systems correspond to one magnetic circuit system respectively, that is, the existing dual-diaphragm sounding monomer usually has two The diaphragm, dome and voice coil are combined with one or two sets of magnetic circuit systems to form an integral structure. However, the magnetic circuit symmetry of this dual-diaphragm unit is poor.

Therefore, it is necessary to provide a sound-generating unit with good magnetic circuit symmetry and a speaker made of the sound-generating unit.

technical problem technical solutions beneficial effect

The purpose of the utility model is to provide a sound-generating unit and a loudspeaker; the sound-generating unit has good magnetic circuit symmetry; the speaker is manufactured by using the aforementioned sound-generating unit.

The technical scheme of the present utility model is as follows:

An embodiment provides a sound-generating unit, including a magnetic circuit system and a vibration system, the magnetic circuit system includes a main magnet, a sub-magnet and a side magnet, the sub-magnet is arranged on the outer circumference of the main magnet, The magnet and the main magnet are arranged at intervals to form a first magnetic gap, the side magnets are arranged on the outer circumference of the auxiliary magnet, and the side magnets and the auxiliary magnet are arranged at intervals to form a second magnetic gap a gap; the vibration system includes a first diaphragm, a second diaphragm, a first voice coil and a second voice coil, the first diaphragm and the second diaphragm are respectively located on opposite two sides of the magnetic circuit system side; the first voice coil is fixed with the first diaphragm, and the first voice coil extends into the inside of the first magnetic gap; the second voice coil is fixed with the second diaphragm, And the second voice coil extends into the inside of the second magnetic gap.

The technical solution is further described below:

In one of the embodiments, the secondary magnet includes at least two secondary magnetic units, and the at least two secondary magnetic units are arranged at intervals and surround the outer circumference of the main magnet;

The side magnet includes at least two side magnet units, and the at least two side magnet units are arranged at intervals and surround the outer periphery of the secondary magnet.

In one embodiment, the main magnets are arranged in a rectangular shape, four auxiliary magnetic units are provided and correspond to the four sides of the main magnet one-to-one, and two are located at opposite ends of the main magnet. The secondary magnetic units are symmetrically arranged;

Four of the side magnet units are provided and correspond to the four secondary magnet units one-to-one, and the two side magnet units located at opposite ends of the secondary magnet are symmetrically arranged.

In one embodiment, the first diaphragm is arranged in a ring shape, the vibration system further includes a first spherical top, the outer edge of the first spherical top is connected with the inner edge of the first diaphragm, so the first voice coil is fixed with the first dome;

The second diaphragm is arranged in a ring shape, the vibration system further includes a second dome, the outer edge of the second dome is connected with the inner edge of the second diaphragm, and the second voice coil is connected to the second dome. The second dome is fixed.

In one embodiment, the magnetic circuit system further includes a first side plate and a second side plate, and the main magnet, the secondary magnet and the side magnet are all located on the first side plate and the first side plate and the second side plate. Between two side plates, the first diaphragm is located on the side of the first side plate facing away from the main magnet, and the second diaphragm is located on the side of the second side plate facing away from the main magnet one side, the first side plate is provided with a first opening for allowing the first voice coil to extend into the first magnetic gap, and the second side plate is provided with a first hole for allowing the second voice coil A second opening extending into the second magnetic gap.

In one embodiment, the first side panel includes a first outer panel and a first inner panel, the first outer panel is fixedly arranged and is annularly arranged, and the first inner panel is located on the first outer panel The inside of the plate is at the same horizontal position as the first outer plate, and the first opening is formed between the outer edge of the first inner plate and the inner edge of the first outer plate;

The second side plate includes a second outer plate and a second inner plate, the second outer plate is fixedly arranged and arranged in a ring shape, and the second inner plate is located inside the second outer plate and is connected with the second outer plate. The second outer plate is in the same horizontal position, and the second opening is formed between the outer edge of the second inner plate and the inner edge of the second outer plate;

One side of the main magnet is bonded and fixed with the first inner plate, and the other side of the main magnet is bonded and fixed with the second inner plate;

One side of the auxiliary magnet is bonded and fixed with the first outer plate, and the other side of the auxiliary magnet is bonded and fixed with the second inner plate;

One side of the side magnet is bonded and fixed to the first outer plate, and the other side of the side magnet is bonded and fixed to the second outer plate.

In one embodiment, the material of the main magnet, the material of the auxiliary magnet and the material of the side magnet are all magnetic steel;

The material of the first side plate is soft iron; or / And the material of the second side plate is soft iron.

In one embodiment, the vibration system further includes a first mounting ring, one side of the first mounting ring is bonded and fixed to the first side plate, and the other side of the first mounting ring is connected to the first side plate. the first vibrating membrane is bonded and fixed;

The vibration system further includes a second mounting ring, one side of the second mounting ring is bonded and fixed with the second side plate, and the other side of the second mounting ring is bonded with the second diaphragm fixed.

In one of the embodiments, the two magnetic poles on opposite sides of the first magnetic gap are mutually synonymous magnetic poles;

The two magnetic poles on opposite sides of the second magnetic gap are mutually synonymous magnetic poles.

In one embodiment, the auxiliary magnet is arranged in a ring shape, the main magnet is located inside the auxiliary magnet, and the main magnet and the auxiliary magnet are on the same horizontal plane;

The side magnets are arranged in a ring shape, the secondary magnets are located inside the side magnets, and the secondary magnets and the side magnets are on the same horizontal plane.

Another embodiment provides a loudspeaker, including a casing and the sound-generating unit according to any one of the above technical solutions, the casing is provided with an inner cavity, the casing is provided with a sound outlet, and the sound outlet is connected to the sound outlet. The inner cavity is communicated; the sounding unit is fixed in the inner cavity of the outer shell.

The technical solution is further described below:

In one embodiment, a partition plate is arranged inside the casing, the partition plate divides the casing into a first cavity and a second cavity, and the sound outlet is connected to the first cavity. The sound generating unit is fixed in the interior of the first cavity, the partition plate is provided with a through hole, and the through hole communicates the first cavity and the second cavity.

In one of the embodiments, the outer edge of the side magnet of the sounding unit is fixedly connected to the inner wall of the housing, or / and the outer edge of the side magnet is fixedly connected with the board surface of the partition plate;

The outer edge of the first diaphragm is fixedly connected to the inner wall of the housing, or / and the outer edge of the first vibrating film is fixedly connected with the plate surface of the partition plate;

The outer edge of the second diaphragm is fixedly connected to the inner wall of the housing, or / and the outer edge of the second diaphragm is fixedly connected with the plate surface of the partition plate.

In one of the embodiments, the sound outlet is opened on a plate surface of the casing opposite to the partition plate.

The beneficial effect of the utility model is that in the magnetic circuit system, the auxiliary magnets are arranged on the outer circumference of the main magnet to form a first magnetic gap, the side magnets are arranged on the outer circumference of the auxiliary magnets to form a second magnetic gap, the auxiliary magnets are common magnets, and the magnetic circuit is symmetrical It has good performance and cooperates with the first diaphragm, the second diaphragm, the first voice coil and the second voice coil to form a double-diaphragm sounding unit .

Description of drawings

1 is an exploded view of a loudspeaker according to Embodiment 1 of the present utility model;

2 is a cross-sectional view of a speaker according to Embodiment 1 of the present utility model;

3 is a schematic diagram of the magnetic circuit system of the first embodiment of the present invention;

Fig. 4 is the separation diagram of the sounding monomer and the shell of the first embodiment of the utility model;

5 is an installation diagram of the first vibrating film and the second vibrating film in Embodiment 1 of the present invention;

Fig. 6 is the loudspeaker exploded view of embodiment two in the utility model;

7 is a schematic diagram of the magnetic circuit system of the second embodiment of the present invention;

Fig. 8 is the magnetic pole arrangement schematic diagram of the magnetic circuit system in the utility model;

Fig. 9 is the line drawing of the magnetic circuit simulation of the sounding monomer in the utility model;

FIG. 10 is a magnetic field diagram of the magnetic circuit simulation of the sounding monomer in the present invention.

Embodiments of the present invention

The present utility model will be further described below with reference to the accompanying drawings and embodiments.

Example 1:

Referring to FIGS. 1 and 4 , a speaker 10 includes a housing 200 and a sound-generating unit 100 , and the sound-generating unit 100 is arranged inside the housing 200 .

Specifically, the outer casing 200 is provided with an inner cavity, and the sounding unit 100 is fixed in the inner cavity of the outer casing 200; It is transmitted through the sound outlet 240 .

Referring to FIGS. 1 and 2 , the sound generating unit 100 includes a magnetic circuit system 110 and a vibration system 120 . The magnetic circuit system 110 includes a main magnet 111 , a secondary magnet 112 and a side magnet 113 , and the secondary magnet 112 is provided on the On the outer circumference of the main magnet 111 , the auxiliary magnet 112 and the main magnet 111 are spaced apart to form a first magnetic gap 114 , the side magnet 113 is arranged on the outer circumference of the auxiliary magnet 112 , and the side magnet 113 A second magnetic gap 115 is formed between it and the secondary magnet 112; the vibration system 120 includes a first diaphragm 121, a second diaphragm 122, a first voice coil 123 and a second voice coil 124, so The first diaphragm 121 and the second diaphragm 122 are respectively located on opposite sides of the magnetic circuit system 110; the first voice coil 123 is fixed to the first diaphragm 121, and the first voice coil 123 is The coil 123 protrudes into the interior of the first magnetic gap 114 ; the second voice coil 124 is fixed to the second diaphragm 122 , and the second voice coil 124 protrudes into the interior of the second magnetic gap 115 .

Referring to FIG. 3 , the main magnet 111 is located in the middle of the magnetic circuit system 110 , the auxiliary magnet 112 is located at the outer periphery of the main magnet 111 , and the main magnet 111 and the auxiliary magnet 112 are spaced apart to form a first magnetic gap 114 . Referring to FIG. 2 , a portion of the first voice coil 123 extends into the interior of the first magnetic gap 114 . Referring to FIG. 3 again, the side magnets 113 are located on the outer periphery of the secondary magnets 112 , and the side magnets 113 and the secondary magnets 112 are spaced apart to form a second magnetic gap 115 . Referring to FIG. 2 , a portion of the second voice coil 124 extends into the second magnetic gap 115 .

In this way, the main magnet 111 , the auxiliary magnet 112 and the side magnet 113 form the first magnetic gap 114 and the second magnetic gap 115 , and the auxiliary magnet 112 is a common magnet. As shown in FIG. 3 , the main magnet 111 , the secondary magnet 112 and the side magnet 113 can be symmetrically or nearly symmetrically arranged, so as to further improve the magnetic circuit symmetry of the magnetic circuit system 110 .

In the viewing angle shown in FIG. 2 , the first diaphragm 121 is located above the magnetic circuit system 110 , the second diaphragm 122 is located below the magnetic circuit system 110 , and the first diaphragm 121 and the second diaphragm 122 form a double diaphragm to emit sound Monomer 100.

From the perspective shown in FIG. 2 , the first voice coil 123 is an inner voice coil and is located above, the second voice coil 124 is an outer voice coil and is located below, and the bottom of the first voice coil 123 extends into the interior of the first magnetic gap 114 , the top of the second voice coil 124 extends into the interior of the second magnetic gap 115 .

Referring to FIG. 3 , the secondary magnet 112 includes at least two secondary magnetic units 1121 , and the at least two secondary magnetic units 1121 are arranged at intervals and surround the outer periphery of the main magnet 111 .

Referring to FIG. 3 , the side magnet 113 includes at least two side magnet units 1131 , and the at least two side magnet units 1131 are arranged at intervals and surround the outer periphery of the secondary magnet 112 .

The secondary magnet 112 includes at least two secondary magnet units 1121, the side magnet 113 includes at least two side magnet units 1131, there are gaps between adjacent secondary magnet units 1121, and there are gaps between adjacent side magnet units 1131, and the main magnet unit 1131 has a gap. There is a first magnetic gap 114 between the magnet 111 and the secondary magnetic unit 1121, and a second magnetic gap 115 between the secondary magnetic unit 1121 and the side magnetic unit 1131, so that the main magnet 111, the secondary magnetic unit 1121, and the side magnetic unit 1131 All have gaps for better air circulation, which can equalize the air pressure in each position, thereby suppressing sway. When working, the degree of non-linearity will be lower and the distortion will be lower, making the sound quality better; at the same time, the temperature of the first voice coil 123 and the second voice coil 124 can be relatively lower, and the reliability of the product can be improved. At the same sound pressure The probability of rubbing the circle is lower, and the product yield is higher.

Referring to FIG. 3 , the main magnet 111 is arranged in a rectangular shape, and there are four auxiliary magnetic units 1121 , which correspond to the four sides of the main magnet 111 one-to-one, and are located at opposite ends of the main magnet 111 . The two secondary magnetic units 1121 are arranged symmetrically.

Referring to FIG. 3 , there are four side magnet units 1131 and one-to-one correspondence with the four secondary magnet units 1121 , and the two side magnet units 1131 located at opposite ends of the secondary magnet 112 are symmetrical set up.

From the perspective shown in FIG. 3 , the main magnet 111 is the main magnet 111 in the middle, the main magnet 111 is a cuboid, the four sides of the main magnet 111 correspond to four secondary magnetic units 1121 respectively, and each secondary magnetic unit 1121 is a strip-shaped cuboid. The two secondary magnetic units 1121 on the left and right sides of the magnet 111 are symmetrically arranged, the two secondary magnetic units 1121 on the front and rear sides of the main magnet 111 are symmetrically arranged, there are four side magnetic units 1131, and the four side magnetic units 1131 are respectively connected with the four side magnetic units 1131. The secondary magnetic units 1121 are in one-to-one correspondence, the four side magnetic units 1131 are all strip-shaped cuboids, the two side magnetic units 1131 on the left and right sides of the secondary magnet 112 (or the main magnet 111 ) are symmetrically arranged, The two side magnet units 1131 are arranged symmetrically.

The magnetic circuit system 110 shown in FIG. 3 adopts the arrangement of nine magnets to form the first magnetic gap 114 and the second magnetic gap 115 , which not only has good air circulation, but also has a non-linear structure during operation, and the magnetic circuit is symmetrical Well, the magnetic field driving forces to the first voice coil 123 and the second voice coil 124 are the same.

Referring to FIG. 1 , the first diaphragm 121 is arranged in a ring shape, and the vibration system 120 further includes a first dome 125 , the outer edge of the first dome 125 and the inner edge of the first diaphragm 121 connected, the first voice coil 123 is fixed with the first dome 125 .

Please refer to FIG. 1 , the second diaphragm 122 is arranged in a ring shape, the vibration system 120 further includes a second dome 126 , the outer edge of the second dome 126 and the inner edge of the second diaphragm 122 connected, the second voice coil 124 is fixed with the second dome 126 .

As shown in FIG. 1 , both the first diaphragm 121 and the second diaphragm 122 are annularly arranged, and the outer edge of the first dome 125 can be bonded to the first diaphragm 121 by bonding (eg, bonding with glue). The inner edge of the second dome 126 can be connected with the inner edge of the second diaphragm 122 by means of bonding.

Referring to FIGS. 1 and 2 , the magnetic circuit system 110 further includes a first side plate 116 and a second side plate 117 , and the main magnet 111 , the secondary magnet 112 and the side magnet 113 are all located on the first side plate 116 . Between one side plate 116 and the second side plate 117 , the first diaphragm 121 is located on the side of the first side plate 116 facing away from the main magnet 111 , and the second diaphragm 122 is located on the side of the first side plate 116 facing away from the main magnet 111 On the side of the second side plate 117 facing away from the main magnet 111 , the first side plate 116 is provided with a first opening for allowing the first voice coil 123 to extend into the first magnetic gap 114 . A hole 1163 , the second side plate 117 is provided with a second opening 1173 for allowing the second voice coil 124 to extend into the second magnetic gap 115 .

As shown in FIG. 2 , the first side plate 116 is a top plate, and the second side plate 117 is a bottom plate.

In order to avoid interference between the first voice coil 123 and the first side plate 116, a first opening 1163 is formed on the first side plate 116, the first opening 1163 is connected to the first magnetic gap 114 (or the first voice coil 123 )correspond.

In order to avoid interference between the second voice coil 124 and the second side plate 117, a second opening 1173 is formed on the second side plate 117, the second opening 1173 and the second magnetic gap 115 (or the second voice coil 124 )correspond.

Please refer to FIGS. 1 and 2 , the first side plate 116 includes a first outer plate 1161 and a first inner plate 1162 , the first outer plate 1161 is fixed and arranged in a ring shape, and the first inner plate 1162 Located inside the first outer plate 1161 and at the same horizontal position as the first outer plate 1161 , the outer edge of the first inner plate 1162 and the inner edge of the first outer plate 1161 form the The first opening 1163 .

1 and FIG. 2 , the second side plate 117 includes a second outer plate 1171 and a second inner plate 1172 , the second outer plate 1171 is fixed and arranged in a ring shape, and the second inner plate 1172 Located inside the second outer plate 1171 and at the same horizontal position as the second outer plate 1171 , the outer edge of the second inner plate 1172 and the inner edge of the second outer plate 1171 form the The second opening 1173 .

Referring to FIGS. 1 and 2 , one side of the main magnet 111 is bonded and fixed to the first inner plate 1162 , and the other side of the main magnet 111 is bonded and fixed to the second inner plate 1172 .

Referring to FIGS. 1 and 2 , one side of the auxiliary magnet 112 is bonded and fixed to the first outer plate 1161 , and the other side of the auxiliary magnet 112 is bonded and fixed to the second inner plate 1172 .

Referring to FIGS. 1 and 2 , one side of the side magnet 113 is bonded and fixed to the first outer plate 1161 , and the other side of the side magnet 113 is bonded and fixed to the second outer plate 1171 .

Optionally, the material of the main magnet 111 , the material of the auxiliary magnet 112 and the material of the side magnet 113 are all magnetic steel.

Optionally, the material of the first side plate 116 is soft iron.

Optionally, the material of the second side plate 117 is soft iron.

Please refer to FIG. 1 and FIG. 5 , the vibration system 120 further includes a first mounting ring 127 , one side of the first mounting ring 127 is bonded and fixed to the first side plate 116 , and the first mounting ring 127 The other side is bonded and fixed with the first diaphragm 121 .

Referring to FIGS. 1 and 5 , the vibration system 120 further includes a second mounting ring 128 , one side of the second mounting ring 128 is bonded and fixed to the second side plate 117 , and the second mounting ring 128 The other side is bonded and fixed with the second diaphragm 122 .

From the perspective shown in FIG. 1 , the upper end of the first mounting ring 127 is bonded and fixed to the lower end of the first diaphragm 121 , and the lower end of the first mounting ring 127 and the upper end of the first side plate 116 (specifically, the first outer plate 1161 the upper end) is glued and fixed.

From the perspective shown in FIG. 1 , the upper end of the second mounting ring 128 is bonded and fixed to the lower end of the second side plate 117 (specifically, the lower end of the second outer plate 1171 ), and the lower end of the second mounting ring 128 is connected to the second diaphragm. The upper end of 122 is glued and fixed.

Referring to FIG. 8 , the two magnetic poles on opposite sides of the first magnetic gap 114 are mutually synonymous magnetic poles.

Referring to FIG. 8 , the two magnetic poles on opposite sides of the second magnetic gap 115 are mutually synonymous magnetic poles.

3 and 8, the magnetic circuit system 110 includes a main magnet 111, four secondary magnetic units 1121, and four side magnetic units 1131. The four secondary magnetic units 1121 are symmetrically arranged, and the four side magnetic units 1131 are symmetrically arranged. The two magnetic poles on opposite sides of a magnetic gap 114 are mutually synonymous magnetic poles, and the two magnetic poles on opposite sides of the second magnetic gap 115 are mutually synonymous magnetic poles. In this way, the symmetry of the magnetic circuit is good, the magnetic field driving forces for the first voice coil 123 and the second voice coil 124 are consistent, and the corresponding first diaphragm 121 and the second voice coil 124 corresponding to the first voice coil 123 can be realized. The second diaphragm 122 vibrates in opposite directions with the same amplitude, which cancel each other out and reduce the shell vibration. During the sounding process of the entire sounding unit 100, the internal and external vibrations can cancel each other, and the corresponding vibration boundaries are strictly coincident in the vibration normal direction.

Please refer to FIG. 3 and FIG. 8 , and combined with the magnetic circuit simulations in FIGS. 9 and 10 , it can be obtained that when the four secondary magnetic units 1121 are symmetrically arranged, the four side magnetic units 1131 are symmetrically arranged, and two opposite sides of the first magnetic gap 114 are arranged symmetrically. When the two magnetic poles on the side are synonymous with each other, and the two magnetic poles on the opposite sides of the second magnetic gap 115 are synonymous with each other, the secondary magnet 112 and the side magnet 113 are magnetized in reverse, and the first voice coil 123 ( That is, the magnetic field driving force of the inner voice coil) is almost close to the magnetic field driving force of the second voice coil 124 (ie the outer voice coil), and the same amplitude vibration of the first diaphragm 121 and the second diaphragm 122 can be realized, so as to realize the vibration Can offset and reduce the effect of shell vibration.

Referring to FIG. 2 , a partition plate 230 is disposed inside the casing 200 , and the partition plate 230 divides the casing 200 into a first cavity 210 and a second cavity 220 . The sound outlet 240 is connected to the The first cavity 210 communicates with each other, the sounding unit 100 is fixed inside the first cavity 210 , the partition plate 230 is provided with a through hole, and the through hole connects the first cavity 210 communicates with the second cavity 220 .

From the perspective shown in FIG. 2 , the partition plate 230 is longitudinally fixed inside the casing 200 to divide the inner cavity of the casing 200 into the first cavity 210 on the left and the second cavity 220 on the right, and the sound outlet 240 It communicates with the first cavity 210 , so that the sound emitted by the sounding unit 100 arranged in the first cavity 210 is emitted through the sound outlet 240 . The through holes of the 100 make the power supply and the sound generating unit 100 electrically connected.

Referring to FIG. 2 , the outer edge of the side magnet 113 of the sounding unit 100 is fixedly connected to the inner wall of the housing 200 , and the outer edge of the side magnet 113 is fixedly connected to the surface of the partition plate 230 .

Referring to FIG. 2 , the outer edge of the first diaphragm 121 is fixedly connected to the inner wall of the housing 200 , and the outer edge of the first diaphragm 121 is fixedly connected to the surface of the partition plate 230 .

Referring to FIG. 2 , the outer edge of the second diaphragm 122 is fixedly connected to the inner wall of the housing 200 , and the outer edge of the second diaphragm 122 is fixedly connected to the board surface of the partition plate 230 .

Optionally, the outer edge of the side magnet 113 can be fixed with the inner wall of the housing 200 by bonding or the like, and the upper end and the lower end of the side magnet 113 can be respectively bonded and fixed with the first outer plate 1161 and the second outer plate 1171; The outer edge of the diaphragm 121 can be fixed to the inner wall of the housing 200 by bonding, or can be fixed to the first mounting ring 127 by bonding, and the outer edge of the first mounting ring 127 is bonded to the inner wall by bonding. The inner wall of the casing 200 is fixed; the outer edge of the second diaphragm 122 can be fixed with the inner wall of the casing 200 by bonding, or can be fixed on the second mounting ring 128 by bonding, and the second mounting ring 128 The outer edge is fixed to the inner wall of the housing 200 by means of bonding. There can be various fixing methods between the side magnet 113, the first vibrating membrane 121 and the second vibrating membrane 122 and the housing 200, and those skilled in the art can flexibly The configuration will not be repeated here.

Please refer to FIG. 1 , FIG. 2 and FIG. 4 , the sound outlet 240 is opened on the board surface of the housing 200 opposite to the partition board 230 .

Of course, the sound outlet 240 can also be provided at other positions of the housing 200, as long as the sound of the sound-generating unit 100 can be emitted through the sound outlet 240. The upper side, the lower side, the front side or the rear side, etc. can be used.

Embodiment 2:

The difference between the second embodiment and the first embodiment lies in the specific structures of the secondary magnet 112 and the side magnet 113 , and other structures are substantially the same.

Referring to FIGS. 6 and 7 , the auxiliary magnet 112 is arranged in a ring shape, the main magnet 111 is located inside the auxiliary magnet 112 , and the main magnet 111 and the auxiliary magnet 112 are on the same horizontal plane.

Referring to FIGS. 6 and 7 , the side magnets 113 are arranged in a ring shape, the secondary magnets 112 are located inside the side magnets 113 , and the secondary magnets 112 and the side magnets 113 are on the same horizontal plane.

As shown in FIG. 7 , the main magnet 111 is a rectangular parallelepiped, the sub-magnet 112 is an annular magnet corresponding to the outer periphery of the main magnet 111 , and the side magnet 113 is an annular magnet corresponding to the outer periphery of the sub-magnet 112 . In this way, a first magnetic gap 114 is formed between the main magnet 111 and the secondary magnet 112 , and a second magnetic gap 115 is formed between the secondary magnet 112 and the side magnet 113 .

Optionally, the material of the main magnet 111 , the material of the auxiliary magnet 112 and the material of the side magnet 113 are all magnetic steel.

The above are only the embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present invention, but these belong to The scope of protection of the utility model.

Claims (14)

1. A sounding monomer, characterized in that it comprises:

   A magnetic circuit system, the magnetic circuit system includes a main magnet, an auxiliary magnet and a side magnet, the auxiliary magnet is arranged on the outer circumference of the main magnet, and the auxiliary magnet and the main magnet are arranged at intervals and form a first a magnetic gap, the side magnets are arranged on the outer periphery of the auxiliary magnets, and the side magnets and the auxiliary magnets are arranged at intervals to form a second magnetic gap; and

   A vibration system, the vibration system includes a first diaphragm, a second diaphragm, a first voice coil and a second voice coil, the first diaphragm and the second diaphragm are respectively located opposite to the magnetic circuit system both sides;

   the first voice coil is fixed with the first diaphragm, and the first voice coil extends into the interior of the first magnetic gap;

   The second voice coil is fixed with the second diaphragm, and the second voice coil extends into the inside of the second magnetic gap.
2. The sound-generating unit according to claim 1, wherein the secondary magnet comprises at least two secondary magnetic units, and the at least two secondary magnetic units are arranged at intervals and are arranged around the outer periphery of the main magnet;

   The side magnet includes at least two side magnet units, and the at least two side magnet units are arranged at intervals and surround the outer periphery of the secondary magnet.
3. The sound-generating unit according to claim 2, wherein the main magnet is arranged in a rectangular shape, the auxiliary magnetic units are provided with four and correspond to the four sides of the main magnet one-to-one, and are located in the The two auxiliary magnetic units at opposite ends of the main magnet are arranged symmetrically;

   Four of the side magnet units are provided and correspond to the four secondary magnet units one-to-one, and the two side magnet units located at opposite ends of the secondary magnet are symmetrically arranged.
4. The sound-generating unit according to claim 3, wherein the first diaphragm is arranged in a ring shape, the vibration system further comprises a first dome, and the outer edge of the first dome is connected to the first dome. The inner edge of the diaphragm is connected, and the first voice coil is fixed with the first dome;

   The second diaphragm is arranged in a ring shape, the vibration system further includes a second dome, the outer edge of the second dome is connected with the inner edge of the second diaphragm, and the second voice coil is connected to the second dome. The second dome is fixed.
5. The sound-generating unit according to any one of claims 1-4, wherein the magnetic circuit system further comprises a first side plate and a second side plate, the main magnet, the auxiliary magnet and the side The magnets are all located between the first side plate and the second side plate, the first diaphragm is located on the side of the first side plate facing away from the main magnet, and the second diaphragm is located on the side of the first side plate facing away from the main magnet. The side of the second side plate facing away from the main magnet, the first side plate is provided with a first opening for extending the first voice coil into the first magnetic gap, the first The two side plates are provided with second openings for extending the second voice coil into the second magnetic gap.
6. The sound-generating unit according to claim 5, wherein the first side plate comprises a first outer plate and a first inner plate, the first outer plate is fixedly arranged and arranged in a ring shape, and the first outer plate is arranged in a ring shape. The inner panel is located inside the first outer panel and is in the same horizontal position as the first outer panel, and the first inner panel is formed between the outer edge of the first inner panel and the inner edge of the first outer panel. opening;

   The second side plate includes a second outer plate and a second inner plate, the second outer plate is fixedly arranged and arranged in a ring shape, and the second inner plate is located inside the second outer plate and is connected with the second outer plate. The second outer plate is in the same horizontal position, and the second opening is formed between the outer edge of the second inner plate and the inner edge of the second outer plate;

   One side of the main magnet is bonded and fixed with the first inner plate, and the other side of the main magnet is bonded and fixed with the second inner plate;

   One side of the auxiliary magnet is bonded and fixed with the first outer plate, and the other side of the auxiliary magnet is bonded and fixed with the second inner plate;

   One side of the side magnet is bonded and fixed to the first outer plate, and the other side of the side magnet is bonded and fixed to the second outer plate.
7. The sound generator according to claim 5, wherein the material of the main magnet, the material of the auxiliary magnet and the material of the side magnet are all magnetic steel;

   The material of the first side plate is soft iron; or/and the material of the second side plate is soft iron.
8. The sound-generating unit according to claim 5, wherein the vibration system further comprises a first mounting ring, one side of the first mounting ring is bonded and fixed to the first side plate, and the first mounting ring is bonded and fixed to the first side plate. The other side of the mounting ring is bonded and fixed with the first diaphragm;

   The vibration system further includes a second mounting ring, one side of the second mounting ring is bonded and fixed with the second side plate, and the other side of the second mounting ring is bonded with the second diaphragm fixed.
9. The sound-generating unit according to any one of claims 1-4, characterized in that: the two magnetic poles on opposite sides of the first magnetic gap are mutually synonymous magnetic poles;

   The two magnetic poles on opposite sides of the second magnetic gap are mutually synonymous magnetic poles.
10. The sound-generating unit according to claim 1, wherein the auxiliary magnet is arranged in a ring shape, the main magnet is located inside the auxiliary magnet, and the main magnet and the auxiliary magnet are on the same horizontal plane ;

    The side magnets are arranged in a ring shape, the secondary magnets are located inside the side magnets, and the secondary magnets and the side magnets are on the same horizontal plane.
11. A loudspeaker, comprising:

    an outer shell, the outer shell is provided with an inner cavity, the outer shell is provided with a sound outlet, and the sound outlet communicates with the inner cavity; and

    The sound-generating unit according to any one of claims 1-10, wherein the sound-generating unit is fixed in the inner cavity of the housing.
12. The loudspeaker according to claim 11, wherein a partition plate is arranged inside the casing, and the partition plate divides the casing into a first cavity and a second cavity, and the sound outlet It communicates with the first cavity, the sounding unit is fixed inside the first cavity, the partition plate is provided with a through hole, and the through hole connects the first cavity and the second cavity. The two chambers are connected.
13. The loudspeaker according to claim 12, wherein the outer edge of the side magnet of the sound-generating unit is fixedly connected with the inner wall of the housing, or/and the outer edge of the side magnet is connected with the outer edge of the partition plate Board fixed connection;

    The outer edge of the first diaphragm is fixedly connected to the inner wall of the housing, or/and the outer edge of the first diaphragm is fixedly connected to the board surface of the partition plate;

    The outer edge of the second diaphragm is fixedly connected to the inner wall of the housing, or/and the outer edge of the second diaphragm is fixedly connected to the board surface of the partition plate.
14. The loudspeaker according to claim 12, wherein the sound outlet is opened on a plate surface of the casing opposite to the partition plate.