Sound production monomer and electronic equipment
By employing a dual-vibration unit and a single magnetic circuit unit design in the loudspeaker, and radially magnetizing the magnet, the problems of uneven magnetic field and complex structure in traditional loudspeakers are solved, resulting in a wider sound field and better stereo effect, while reducing cost and manufacturing difficulty.
Patent Information
- Application Number
- CN202511491888.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-17
- Publication Date
- 2026-01-23
AI Technical Summary
Traditional loudspeaker magnetic circuit units have limited magnetic field uniformity and strength, which affects acoustic performance. They are also complex in structure, have high manufacturing costs, and are difficult to adapt to various design scenarios.
The design employs a dual vibration unit and a single magnetic circuit unit. The magnet is magnetized radially along the sound-generating unit, and a uniform magnetic flux is generated at the first and second magnetic gaps through the magnetic guide frame. The Z-shaped support structure is eliminated, simplifying the magnetic circuit system.
It achieves a wider sound field and better stereo effect, reduces manufacturing costs and processing difficulty, and improves sound quality and applicability.
Smart Images
Figure CN121397433A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of electro-acoustic conversion, in particular to a sound emitting unit and an electronic device. BACKGROUND
[0002] Traditional loudspeakers are usually single-sided sound emitting loudspeakers, and the sound field is narrow. In the magnetic circuit unit, the magnetic force line direction of the magnet is usually arranged along the axial direction of the sound emitting unit, that is, the magnet is magnetized along the axial direction of the sound emitting unit, and the N pole and the S pole are arranged along the axial direction of the sound emitting unit, and the magnetic field for the vibration of the voice coil is generated by the magnetic conduction of the magnetic conduction element. However, the uniformity and strength of the magnetic field of the magnetic circuit unit with the magnetic force line arranged along the axial direction of the sound emitting unit are easily limited, the sound quality is poor, and the acoustic performance is affected. There is also a higher constraint on the axial size of the magnet, or a higher constraint on the radial size and axial size of the magnet, which cannot adapt to multi-scene design, and the application range is small.
[0003] However, the existing double-sided sound emitting loudspeaker usually needs to set two sets of magnetic circuit systems to realize double-sided sound emission, but setting two sets of magnetic circuit systems will increase the structural complexity of the double-sided sound emitting loudspeaker, and the manufacturing cost is high, and there is a problem of difficult assembly. Although there are double-sided sound emitting loudspeakers that use a single set of magnetic circuit systems, the single set of magnetic circuit systems need a support structure to connect the inner and outer parts of the magnetic circuit system, and the support structure often needs to be set as a Z-shaped type, which requires high machining precision and complex process. And when the magnetic circuit system is heavy, the strength requirement of the support structure is high, and the manufacturing cost is high. SUMMARY
[0004] The main purpose of the present application is to provide a sound emitting unit and an electronic device, which aims to solve the technical problems of the existing sound emitting unit magnetic circuit unit setting affecting acoustic performance and structural complexity, process complexity, etc.
[0005] To achieve the above-mentioned purpose, the present application provides a sound emitting unit, which comprises: Two vibration units, the two vibration units are arranged opposite along the axial direction of the sound emitting unit; each vibration unit comprises a diaphragm and a voice coil, one end of the voice coil is connected with the diaphragm, and the voice coil is used to drive the diaphragm to vibrate along the axial direction of the sound emitting unit; A magnetic circuit unit, the magnetic circuit unit comprises a magnetic conduction frame and a magnet, the magnetic conduction frame surrounds an installation slot, and the magnet is accommodated in the installation slot; the two ends of the magnetic conduction frame along the axial direction are respectively formed with a first magnetic gap and an open mouth which are in communication with the installation slot, the magnet is located at the open mouth, and the magnet is magnetized along the radial direction of the sound emitting unit; the second magnetic gap in communication with the installation slot is formed in the magnet or between the magnet and the magnetic conduction frame; In one of the vibration units, the end of the voice coil away from the diaphragm is located in the first magnetic gap; in the other vibration unit, the end of the voice coil away from the diaphragm is located in the second magnetic gap.
[0006] In one embodiment, the magnetic conductive frame is in a ring-shaped closed structure surrounding the axial direction; the magnetic conductive frame comprises an inner frame and an outer frame arranged around the inner frame; the inner frame and the outer frame enclose the annular closed mounting slot; the first magnetic gap is formed between one end of the inner frame and one end of the outer frame along the radial direction; the other end of the inner frame and the other end of the outer frame are spaced along the radial direction to form the opening; the second magnetic gap is formed in the magnet, between the magnet and the inner frame, or between the magnet and the outer frame.
[0007] In one embodiment, the inner frame comprises an inner side wall and an inner end wall, and the outer frame comprises an outer side wall and an outer end wall, and the inner side wall, the inner end wall, the outer side wall and the outer end wall jointly enclose the mounting slot; the inner side wall and the outer side wall are arranged along the axial direction and spaced along the radial direction; the two ends of the inner side wall along the axial direction are respectively a first inner end and a second inner end, and the two ends of the outer side wall along the axial direction are respectively a first outer end and a second outer end; wherein the inner end wall is connected to the first inner end and extends outward along the radial direction, the outer end wall is connected to the first outer end and extends inward along the radial direction, and is spaced from the inner end wall to form the first magnetic gap; the second inner end and the second outer end form the opening; the second magnetic gap is formed in the magnet, between the magnet and the inner side wall, or between the magnet and the outer side wall.
[0008] In one embodiment, the mounting slot further comprises a non-magnetic conductive support extending along the circumferential direction of the mounting slot; the non-magnetic conductive support is supported between the magnet and the inner end wall along the axial direction; the inner side of the magnet and the inner side wall are spaced along the radial direction to form the second magnetic gap, and the outer side of the magnet and the outer side wall are in abutment; or, the non-magnetic conductive support is supported between the magnet and the outer end wall along the axial direction; the outer side of the magnet and the outer side wall are spaced along the radial direction to form the second magnetic gap, and the inner side of the magnet and the inner side wall are in abutment.
[0009] In one embodiment, the non-magnetic conductive support is arranged close to the first magnetic gap or the second magnetic gap and forms a short circuit ring; and / or, The non-magnetic support is made of aluminum, copper or plastic.
[0010] In an embodiment, the second magnetic gap is formed in the magnet, the second magnetic gap divides the magnet into two magnetic strips spaced along the radial direction, both of the two magnetic strips are magnetized along the radial direction; the side of each of the two magnetic strips away from each other abuts against the inner side wall and the outer side wall respectively, and the side of the two magnetic strips close to each other has opposite magnetism; The mounting slot further comprises two non-magnetic supports extending along the circumferential direction of the mounting slot, the two non-magnetic supports are spaced along the radial direction; one of the non-magnetic supports supports between the inner end wall and the magnetic strip arranged close to the inner side along the axial direction; the other non-magnetic support supports between the outer end wall and the magnetic strip arranged close to the outer side along the axial direction.
[0011] In an embodiment, the two non-magnetic supports are arranged close to the first magnetic gap and the second magnetic gap respectively, and both form short-circuit rings. and / or, Each of the non-magnetic supports is made of aluminum, copper or plastic, and the materials of the two non-magnetic supports are the same or different.
[0012] In an embodiment, the inner side wall surrounds a hole along the circumferential direction of the mounting slot; or, The inner side wall surrounds a solid column along the circumferential direction of the mounting slot.
[0013] In an embodiment, the magnet is an integrated magnet extending along the circumferential direction of the mounting slot and being annularly closed.
[0014] In an embodiment, the magnet is a split magnet, the magnet comprises a plurality of magnetic blocks arranged along the circumferential direction of the mounting slot, and a gap is formed between any two adjacent magnetic blocks and communicates with the mounting slot, the gap extends along the radial direction.
[0015] In an embodiment, the magnetic blocks are fan-shaped magnetic blocks, the small end of the fan-shaped magnetic block faces the inner frame, the large end of the fan-shaped magnetic block faces the outer frame, and the gaps are uniformly arranged along the radial direction; or, The magnetic blocks are rectangular magnetic blocks, one end of the rectangular magnetic block faces the inner frame, the other end of the rectangular magnetic block faces the outer frame, and the gaps are arranged in a gradient along the radial direction.
[0016] In an embodiment, the first magnetic gap and the second magnetic gap are distributed in a staggered manner along the radial direction; and / or, The magnetic conductive frame is arranged with equal thickness. And / or, Along the axial direction, the end of the magnet towards the opening is flush with the end of the magnetic conductive frame where the opening is located.
[0017] The present application also provides an electronic device applying the sound production unit as described above.
[0018] Compared with the conventional single-sided sound production loudspeaker as indicated in the background art, the sound production unit of the present application not only realizes double-sided sound production, but also has a wider sound field and better stereo effect. In the magnetic circuit unit of the sound production unit, the magnet is magnetized along the radial direction of the sound production unit, and the magnetic force lines of the magnet are arranged along the radial direction of the sound production unit. The magnetic conductive frame can generate uniform magnetic flux and magnetic force lines at the first magnetic gap and the second magnetic gap, and provide uniform magnetic field for the up-down reciprocating vibration of the two voice coils in the first magnetic gap and the second magnetic gap respectively when the two voice coils are energized, thereby making the magnetic field strength uniform, the BL frequency response curve smoother, and the acoustic performance improved, so as to improve the sound quality. Moreover, the bottom end of the magnetic conductive frame is arranged in an open manner, and the magnet can be located at the opening. The axial dimension of the magnet is less constrained, and can be adapted to various scene designs, so the application range is wide.
[0019] Compared with the existing double-sided sound production loudspeaker which needs to set two sets of magnetic circuit systems to realize double-sided sound production, the sound production unit of the present application only needs to set one set of magnetic circuit unit to realize double-sided sound production, thereby simplifying the structure, reducing the manufacturing cost and assembly difficulty. Moreover, compared with the existing double-sided sound production loudspeaker which adopts a single set of magnetic circuit system and needs a Z-shaped support structure to connect the inner part and the outer part of the magnetic circuit system, the sound production unit of the present application does not need to set a Z-shaped support structure to connect the inner part and the outer part of the magnetic circuit unit, thereby reducing the processing precision requirement and manufacturing cost, and simplifying the process. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on the drawings shown.
[0021] Figure 1 FIG. 1 is a structural schematic diagram of a sound production unit according to an embodiment of the present application; Figure 2 FIG. 2 is a sectional schematic diagram of a magnetic circuit unit in the sound production unit shown in FIG. 1; Figure 1 Figure 3 FIG. 3 is a structural schematic diagram of a sound production unit according to another embodiment of the present application; Figure 4 Fig. 1 is a schematic view of a structure of a sound production unit according to an embodiment of the present application; Figure 3 Fig. 2 is a schematic view of a cross section of a magnetic circuit unit according to an embodiment of the present application; Figure 5 Fig. 3 is a schematic view of a structure of a sound production unit according to another embodiment of the present application; Figure 6 Fig. 4 is a schematic view of a cross section of a magnetic circuit unit according to another embodiment of the present application; Figure 5 Fig. 4 is a schematic view of a cross section of a magnetic circuit unit according to another embodiment of the present application; Figure 7 Fig. 5 is a BL curve diagram of a sound production unit according to an embodiment of the present application; Figure 8 Fig. 6 is a schematic view of a magnetic field distribution of a sound production unit according to an embodiment of the present application.
[0022] Brief Description of the Drawings: 100, sound production unit; 10, vibration unit; 11, diaphragm; 12, voice coil; 20, magnetic circuit unit; 21, magnetic conducting frame; 211, mounting groove; 212, first magnetic gap; 213, opening; 214, inner frame; 2141, inner side wall; 2142, inner end wall; 215, outer frame; 2151, outer side wall; 2152, outer end wall; 22, magnet; 221, magnetic block; 222, gap; 223, magnetic strip; 23, second magnetic gap; 30, non-magnetic conducting support.
[0023] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.
[0025] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings). If the certain posture changes, the directional indications also change accordingly.
[0026] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features indicated or implicitly indicating the number of technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.
[0027] The conventional loudspeaker is usually a single-surface sound emitting loudspeaker, and the sound field is narrow. In the magnetic circuit unit of the loudspeaker, the magnetic force line direction of the magnet is usually arranged along the axial direction of the sound emitting unit, that is, the magnet is magnetized along the axial direction of the sound emitting unit, the N pole and the S pole of the magnet are arranged along the axial direction of the sound emitting unit, and the magnetic field for the vibration of the voice coil is generated by the magnetic conduction of the magnetic conduction element. However, the uniformity and the magnetic field strength of the magnetic field of the magnetic circuit unit with the magnetic force line arranged along the axial direction of the sound emitting unit are easily limited, the sound quality is poor, and the acoustic performance is affected. There is a higher constraint on the axial size of the magnet, or there is a higher constraint on the radial size and the axial size of the magnet, which cannot adapt to multi-scene design, and the application range is small.
[0028] However, the existing double-surface sound emitting loudspeaker usually needs to set two sets of magnetic circuit systems to realize double-surface sound emission, but setting two sets of magnetic circuit systems will increase the structural complexity of the double-surface sound emitting loudspeaker, the manufacturing cost is high, and there is a problem of assembly difficulty. Although there is a double-surface sound emitting loudspeaker using a single set of magnetic circuit system, the single set of magnetic circuit system needs a support structure to connect the inner part and the outer part of the magnetic circuit system, and the support structure often needs to be set as a Z-shaped type, the machining precision requirement is high, the process is complex, and when the magnetic circuit system is heavy, the strength requirement of the support structure is high, and the manufacturing cost is high.
[0029] To solve the above problems, the present application provides a sound emitting unit and an electronic device.
[0030] In an embodiment, the sound production unit 100 comprises a magnetic circuit unit 20 and two vibration units 10, wherein the two vibration units 10 are arranged oppositely along the axial direction of the sound production unit 100; each vibration unit 10 comprises a diaphragm 11 and a voice coil 12, one end of the voice coil 12 is connected with the diaphragm 11, and the voice coil 12 is used to drive the diaphragm 11 to vibrate along the axial direction of the sound production unit 100; the magnetic circuit unit 20 comprises a magnetic conductive frame 21 and a magnet 22, the magnetic conductive frame 21 encloses an installation slot 211, and the magnet 22 is accommodated in the installation slot 211; the two ends of the magnetic conductive frame 21 along the axial direction are respectively formed with a first magnetic gap 212 and an open end 213 which are in communication with the installation slot 211, the magnet 22 is located at the open end 213, and the magnet 22 is magnetized along the radial direction of the sound production unit 100; a second magnetic gap 23 is formed in the magnet 22 or between the magnet 22 and the magnetic conductive frame 21 and is in communication with the installation slot 211; in one of the vibration units 10, the end of the voice coil 12 away from the diaphragm 11 is located in the first magnetic gap 212; in the other vibration unit 10, the end of the voice coil 12 away from the diaphragm 11 is located in the second magnetic gap 23.
[0031] The sound production unit 100 can be a loudspeaker unit, and the sound production unit 100 can be applied in a sound production module of an electronic device, and the electronic device can be a car, a sound system, etc. This embodiment takes the sound production unit 100 as a loudspeaker unit as an example for description.
[0032] Specifically, as shown in Figure 1 Figure 3 and Figure 5 , the axial direction of the sound production unit 100 is the up-down direction, and is also the vertical direction, and the radial direction of the sound production unit 100 is the left-right direction, and is also the horizontal direction or the inner-outer direction. The two vibration units 10 are arranged oppositely along the axial direction of the sound production unit 100, that is, the two vibration units 10 are arranged oppositely in the up-down direction. Each vibration unit 10 comprises a diaphragm 11 and a voice coil 12, and one end of the voice coil 12 is connected with the diaphragm 11. The magnetic conductive frame 21 of the magnetic circuit unit 20 encloses an installation slot 211, and the magnet 22 is accommodated in the installation slot 211. The two ends of the magnetic conductive frame 21 along the axial direction, that is, the top end and the bottom end, are respectively formed with a first magnetic gap 212 and an open end 213, and the first magnetic gap 212 and the open end 213 are in communication with the installation slot 211. The magnet 22 is located at the open end 213, that is, the magnet 22 is located at the bottom end of the magnetic conductive frame 21, and the magnet 22 is magnetized along the radial direction of the sound production unit 100, that is, the N pole and the S pole of the magnet 22 are arranged along the radial direction of the sound production unit 100.
[0033] In an embodiment, a second magnetic gap 23 is formed in the magnet 22 and is in communication with the installation slot 211; in the vibration unit 10 located above, the upper end of the voice coil 12 is connected with the diaphragm 11, and the lower end of the voice coil 12 is located in the first magnetic gap 212 when the voice coil 12 is at rest; in the vibration unit 10 located below, the lower end of the voice coil 12 is connected with the diaphragm 11, and the upper end of the voice coil 12 is located in the second magnetic gap 23 when the voice coil 12 is at rest.
[0034] In another embodiment, the magnet 22 and the magnetic conducting frame 21 form a second magnetic gap 23 in communication with the mounting groove 211; in the upper vibration unit 10, the upper end of the voice coil 12 is connected with the diaphragm 11, and the lower end of the voice coil 12 is located in the first magnetic gap 212 when the voice coil 12 is at rest; in the lower vibration unit 10, the lower end of the voice coil 12 is connected with the diaphragm 11, and the upper end of the voice coil 12 is located in the second magnetic gap 23 when the voice coil 12 is at rest.
[0035] The second magnetic gap 23 can be formed in the magnet 22 or between the magnet 22 and the magnetic conducting frame 21, which is highly flexible.
[0036] After the same direction current is passed through the two voice coils 12 respectively at rest in the first magnetic gap 212 and the second magnetic gap 23, the two voice coils 12 are relatively moved under the action of the magnetic field force of the magnetic circuit unit 20, that is, when one of the voice coils 12 vibrates upward, the other voice coil 12 vibrates downward, and then drives the two diaphragms 11 to vibrate respectively, so as to drive the air to sound, realize double-sided sound emission, and complete the energy conversion between electricity and sound. Moreover, the two vibration units 10 have the same phase, the sound field is superimposed, the stereo sound effect of the electronic equipment in the external mode is improved, the sound field is wide, and the acoustic performance is improved.
[0037] Moreover, the magnet 22 is magnetized along the radial direction of the sound emission monomer 100 and is magnetically conducted through the magnetic conducting frame 21, and uniform magnetic flux and magnetic lines of force can be generated at the first magnetic gap 212 and the second magnetic gap 23. When the two voice coils 12 are electrified, the upper and lower reciprocating vibrations in the first magnetic gap 212 and the second magnetic gap 23 are provided with uniform magnetic field, and then the magnetic field strength is uniform, the sound quality is improved, and the acoustic performance is improved.
[0038] Compared with the traditional single-sided sound emission loudspeaker in the background art, the magnetic lines of force of the magnet 22 are arranged along the axial direction of the sound emission monomer 100, and the magnetic lines of force of the magnet 22 are arranged along the radial direction of the sound emission monomer 100. Figure 7 and Figure 8As shown, the sound emitting monomer 100 of the present application not only can realize double-sided sound emission, but also has a wider sound field and better stereo sound effect. In the magnetic circuit unit 20 of the sound emitting monomer 100, the magnet 22 is magnetized along the radial direction of the sound emitting monomer 100, and the magnetic force lines of the magnet 22 are arranged along the radial direction of the sound emitting monomer 100. The magnetic conduction of the magnetic conduction frame 21 can generate uniform magnetic flux and magnetic force lines at the first magnetic gap 212 and the second magnetic gap 23, thereby providing a uniform magnetic field for the up-down reciprocating vibration of the two voice coils 12 in the first magnetic gap 212 and the second magnetic gap 23, respectively, when the two voice coils 12 are energized, and further making the magnetic field strength uniform and the BL frequency response curve smoother, thereby improving the acoustic performance and enhancing the sound quality. Moreover, the bottom end of the magnetic conduction frame 21 is provided with an opening 213, and the magnet 22 is located at the opening 213. The axial dimension of the magnet 22 is less constrained, and can be adapted to various scene designs, thereby having a wide application range.
[0039] Compared with the existing double-sided sound emitting speaker which needs to set two sets of magnetic circuit systems to realize double-sided sound emission, in the sound emitting monomer 100 of the present application, only one set of magnetic circuit unit 20 is needed to realize double-sided sound emission, thereby simplifying the structure, reducing the manufacturing cost and assembly difficulty. Moreover, compared with the existing double-sided sound emitting speaker which adopts a single set of magnetic circuit system and needs a Z-shaped support structure to connect the inner part and the outer part of the magnetic circuit system, in the sound emitting monomer 100 of the present application, the Z-shaped support structure is not needed to connect the inner part and the outer part of the magnetic circuit unit 20, thereby reducing the machining precision requirement and manufacturing cost, and simplifying the process.
[0040] In an embodiment, the magnetic conduction frame 21 is in a ring-shaped closed structure arranged around the axial direction; the magnetic conduction frame 21 comprises an inner frame 214 and an outer frame 215 arranged around the outer part of the inner frame 214; the inner frame 214 and the outer frame 215 form a ring-shaped closed mounting groove 211; the inner frame 214 and the outer frame 215 are radially spaced apart between one end of the inner frame 214 and one end of the outer frame 215 to form the first magnetic gap 212, and are radially spaced apart between the other end of the inner frame 214 and the other end of the outer frame 215 to form the opening 213; the second magnetic gap 23 is formed between the magnet 22 and the inner frame 214 or between the magnet 22 and the outer frame 215.
[0041] As shown in the drawings, Figure 2 , Figure 4 and Figure 6As shown, the magnetic conducting frame 21 is in a ring-shaped closed structure arranged around the axis, that is, the magnetic conducting frame 21 is a ring-shaped closed frame, and the axis direction of the magnetic conducting frame 21 is consistent with the axis direction of the sound production unit 100. The magnetic conducting frame 21 is a split magnetic conducting frame 21, including an inner frame 214 and an outer frame 215, wherein the outer frame 215 is annularly arranged outside the outer periphery of the inner frame 214, and forms an annular closed mounting groove 211 with the inner frame 214. The upper end of the inner frame 214 and the upper end of the outer frame 215 are spaced apart along the radial direction of the sound production unit 100, so that the top end of the magnetic conducting frame 21 forms a first magnetic gap 212. The lower end of the inner frame 214 and the lower end of the outer frame 215 are spaced apart along the radial direction of the sound production unit 100, so as to form an open 213 at the bottom end of the magnetic conducting frame 21.
[0042] As shown in Figure 1 and Figure 2 In an embodiment, the second magnetic gap 23 is formed between the magnet 22 and the inner frame 214; as shown in Figure 3 and Figure 4 In another embodiment, the second magnetic gap 23 is formed between the magnet 22 and the outer frame 215; as shown in Figure 5 and Figure 6 In yet another embodiment, the second magnetic gap 23 is formed in the magnet 22. That is, the second magnetic gap 23 can be formed between the magnet 22 and the inner frame 214, can be formed between the magnet 22 and the outer frame 215, and can be formed in the magnet 22, with high flexibility.
[0043] By designing the magnetic conducting frame 21 as a split inner frame 214 and outer frame 215, the inner frame 214 and the outer frame 215 cooperate to form the mounting groove 211, the first magnetic gap 212 and the opening 213, and the inner frame 214 or the outer frame 215 can also cooperate with the magnet to form the second magnetic gap 23, with reasonable and ingenious structure design. Moreover, since the magnetic conducting frame 21 is a split magnetic conducting frame 21, the outer frame 215 can be moved closer to or farther away from the inner frame 214 along the radial direction according to actual use requirements, so as to adjust the radial distance between the inner frame 214 and the outer frame 215, and further adjust the radial size of the mounting groove 211, so that the radial size of the magnet 22 in the mounting groove 211 is less constrained, further adapting to various scene designs, and having a wide application range.
[0044] Moreover, the outer frame 215 can be radially closer to or farther away from the inner frame 214 according to actual use requirements, and the structure of the outer frame 215 and the inner frame 214 can also be flexibly adjusted according to actual use requirements, so as to adjust the size and shape of the first magnetic gap 212 and the second magnetic gap 23 formed by the inner frame 214 or the outer frame 215 and the magnet, so as to reduce the leakage of magnetic flux and improve the guidance of the magnetic flux passing through the first magnetic gap 212 and the second magnetic gap 23, so that the magnetic field around each voice coil 12 is more uniform, the electromagnetic force is more symmetrical and linear, and the second and third harmonic distortions generated by the magnetic circuit unit 20 to the loudspeaker can be effectively reduced, thereby improving the sound quality and improving the acoustic performance.
[0045] In an embodiment, the inner frame 214 includes an inner side wall 2141 and an inner end wall 2142, and the outer frame 215 includes an outer side wall 2151 and an outer end wall 2152, and the inner side wall 2141, the inner end wall 2142, the outer side wall 2151 and the outer end wall 2152 jointly form the mounting groove 211; the inner side wall 2141 and the outer side wall 2151 are both arranged in the axial direction and are distributed in the radial direction; the two ends of the inner side wall 2141 in the axial direction are a first inner end and a second inner end, respectively, and the two ends of the outer side wall 2151 in the axial direction are a first outer end and a second outer end, respectively; the inner end wall 2142 is connected to the first inner end and extends outward in the radial direction, the outer end wall 2152 is connected to the first outer end and extends inward in the radial direction, and is distributed in the radial direction with the inner end wall 2142 to form the first magnetic gap 212; the second inner end and the second outer end form the opening 213; the second magnetic gap 23 is formed inside the magnet 22, between the magnet 22 and the inner side wall 2141, or between the magnet 22 and the outer side wall 2151.
[0046] Specifically, as shown in Figure 1 、 Figure 3 and Figure 5 , the inner side wall 2141 of the inner frame 214 is arranged in the axial direction of the sound emitting unit 100, i.e. vertically arranged, and the inner end wall 2142 is transversely arranged; the outer side wall 2151 of the outer frame 215 is arranged in the axial direction of the sound emitting unit 100, i.e. vertically arranged, and the outer end wall 2152 is transversely arranged. Among them, the upper end of the inner side wall 2141 is the first inner end, and the lower end is the second inner end; the upper end of the outer side wall 2151 is the first outer end, and the lower end is the second outer end.
[0047] The inner side wall 2141 and the outer side wall 2151 are distributed in a radial direction, the inner end wall 2142 is connected to the upper end of the inner side wall 2141 and extends radially outward, the outer end wall 2152 is connected to the upper end of the outer side wall 2151 and extends radially inward, the inner side wall 2141, the inner end wall 2142, the outer side wall 2151 and the outer end wall 2152 form the mounting groove 211, and the outer end wall 2152 and the inner end wall 2142 are distributed in an inner-outer direction to form the first magnetic gap 212, the lower end of the inner side wall 2141 and the lower end of the outer side wall 2151 form the opening 213, and the second magnetic gap 23 is formed between the magnet 22 and the inner side wall 2141 or between the magnet 22 and the outer side wall 2151, so that the mounting groove 211, the first magnetic gap 212, the second magnetic gap 23 and the opening 213 are formed by simple and effective cooperation between structures, and the structure design is simple, reasonable and ingenious.
[0048] It should be noted that the position of the first magnetic gap 212 can be flexibly set according to actual use requirements, the first magnetic gap 212 can be arranged at a position close to the inner side wall 2141, or at a position close to the outer side wall 2151, or at a central position between the inner side wall 2141 and the outer side wall 2151. The position of the second magnetic gap 23 can also be flexibly set according to actual use requirements, which can be formed between the magnet 22 and the inner side wall 2141, between the magnet 22 and the outer side wall 2151, or in the magnet 22.
[0049] As shown in FIG. 1, Figure 1 In an embodiment, the mounting groove 211 further includes a non-magnetic support 30 extending in a circumferential direction of the mounting groove 211; the non-magnetic support 30 is supported in an axial direction between the magnet 22 and the inner end wall 2142; the inner side of the magnet 22 and the inner side wall 2141 are distributed in a radial direction to form the second magnetic gap 23, and the outer side of the magnet 22 and the outer side wall 2151 abut.
[0050] Specifically, the non-magnetic support 30 extends circumferentially along the mounting groove 211 to form a closed annular structure. Furthermore, the non-magnetic support 30 is non-magnetic, avoiding any influence on the magnetic field. The non-magnetic support 30 is a cylindrical support wall, simple in structure and easy to manufacture. It supports the magnet 22 along the axial direction of the sound-generating unit 100 between the magnet 22 and the inner end wall 2142 of the magnetically conductive frame 21, serving to support and fix the magnet 22 and facilitating adjustment of the space between the two voice coils 12, offering high flexibility. Moreover, the outer side of the magnet 22 is flush with and abuts against the outer wall 2151 of the magnetically conductive frame 21, and the two can be fixed by adhesive bonding, achieving a stable assembly between the magnet 22 and the outer frame 215. Simultaneously, the non-magnetic support 30 connects the magnet 22 and the inner end wall 2142, thus achieving a stable assembly between the magnet 22 and the inner frame 214, thereby achieving a stable assembly between the magnet 22 and the overall magnetically conductive frame 21. The inner side of the magnet 22 and the inner sidewall 2141 of the inner frame 214 are distributed radially, that is, laterally, to form the second magnetic gap 23. The structural design is simple and ingenious.
[0051] like Figure 3 As shown, in another embodiment, the mounting groove 211 further includes a non-magnetic support member 30 extending circumferentially along the mounting groove 211; the non-magnetic support member 30 is axially supported between the magnet 22 and the outer end wall 2152; the outer side of the magnet 22 and the outer end wall 2151 are radially spaced to form a second magnetic gap 23, and the inner side of the magnet 22 abuts against the inner end wall 2141.
[0052] Specifically, the non-magnetic support 30 extends circumferentially along the mounting groove 211 to form a closed annular structure. Furthermore, the non-magnetic support 30 is non-magnetic, avoiding any influence on the magnetic field. The non-magnetic support 30 is a cylindrical support wall, simple in structure and easy to manufacture. It supports the magnet 22 along the axial direction of the sound-generating unit 100 between the magnet 22 and the outer end wall 2152 of the magnetically conductive frame 21, serving to support and fix the magnet 22 and facilitating adjustment of the space between the two voice coils 12, offering high flexibility. Moreover, the outer side of the magnet 22 is flush with and abuts against the inner side wall 2141 of the magnetically conductive frame 21. The two can also be fixed by adhesive bonding, achieving a stable assembly between the magnet 22 and the inner frame 214. Simultaneously, the non-magnetic support 30 connects the magnet 22 to the outer end wall 2152, achieving a stable assembly between the magnet 22 and the outer frame 215, thus achieving a stable assembly between the magnet 22 and the overall magnetically conductive frame 21. The outer side of the magnet 22 and the outer side wall 2151 of the outer frame 215 are distributed radially, that is, laterally, to form the second magnetic gap 23. The structural design is simple and ingenious.
[0053] In one embodiment, the non-magnetic support 30 is positioned close to the first magnetic gap 212 and forms a short-circuit ring. Understandably, the short-circuit ring is also called a Faraday ring, and it is positioned close to the first magnetic gap 212. Changes in the current of the voice coil 12 located within the first magnetic gap 212 cause changes in the magnetic field. In the low-frequency region, eddy currents are generated in the magnetically conductive frame 21 of the magnetic circuit unit 20. The low resistance of the short-circuit ring concentrates the generated eddy currents within the short-circuit ring, effectively inducing and canceling the generated eddy currents, reducing energy loss, and decreasing the interference of eddy currents on the magnetic field around the voice coil 12, thereby significantly reducing second-order harmonic distortion.
[0054] In another embodiment, the non-magnetic support 30 is positioned close to the second magnetic gap 23 and forms a short-circuit ring. Understandably, the short-circuit ring is also called a Faraday ring, and it is positioned close to the second magnetic gap 23. Changes in the current of the voice coil 12 located within the second magnetic gap 23 cause changes in the magnetic field. In the low-frequency region, eddy currents are generated in the magnetically conductive frame 21 of the magnetic circuit unit 20. The low resistance of the short-circuit ring concentrates the generated eddy currents within the short-circuit ring, effectively inducing and canceling the generated eddy currents, reducing energy loss, and decreasing the interference of eddy currents on the magnetic field around the voice coil 12, thereby significantly reducing second-order harmonic distortion.
[0055] In one embodiment, the non-magnetic support 30 is made of aluminum or copper. It should be noted that when the non-magnetic support 30 is made of aluminum or copper, i.e., an aluminum ring or a copper ring, it acts as a short-circuit ring. In particular, the copper ring, while acting as a short-circuit ring, is also a good heat conductor, which helps to more effectively conduct the heat generated by the voice coil 12 to the magnetic frame 21 and the magnet 22 and dissipate it.
[0056] In another embodiment, the non-magnetic support 30 is a plastic part, which serves to support and fix the magnet 22, and is lightweight, low in cost, and easy to manufacture.
[0057] like Figure 5 and Figure 6 As shown, in other embodiments, a second magnetic gap 23 is formed within the magnet 22, dividing the magnet 22 into two radially spaced magnetic strips 223, both of which are radially magnetized. The opposite sides of the two magnetic strips 223 abut against the inner sidewall 2141 and the outer sidewall 2151, respectively, and the magnetic properties of the sides of the two magnetic strips 223 that are close to each other are opposite. The mounting groove 211 also includes two non-magnetic support members 30 extending circumferentially along the mounting groove 211. The two non-magnetic support members 30 are arranged radially spaced. One of the non-magnetic support members 30 is axially supported between a magnetic strip 223 near the inner side and the inner end wall 2142. The other non-magnetic support member 30 is axially supported between a magnetic strip 223 near the outer side and the outer end wall 2152.
[0058] Specifically, the magnet 22 is formed by two inner and outer spaced magnetic strips 223. Understandably, each magnetic strip 223 is annularly closed, both magnetic strips 223 are magnetized along the radial direction, and the inner side of the inner magnetic strip 223 abuts against the inner side wall 2141, the outer side of the outer magnetic strip 223 abuts against the outer side wall 2151, and the poles of the two magnetic strips 223 opposite to each other, i.e., the outer pole of the inner magnetic strip 223 is opposite to the inner pole of the outer magnetic strip 223, to ensure the consistency of the magnetization direction along the radial direction.
[0059] The two non-magnetic supporting members 30 are arranged in inner and outer spaces, and each non-magnetic supporting member 30 extends along the circumference of the mounting groove 211 to form an annular closed structure. Moreover, each non-magnetic supporting member 30 is non-magnetic to avoid affecting the magnetic field. The non-magnetic supporting member 30 is a straight cylindrical supporting wall, which is simple in structure and easy to manufacture. The inner non-magnetic supporting member 30 supports the magnet 22 and the inner end wall 2142 of the magnetic conducting frame 21 along the axial direction of the sound emitting unit 100, and plays a role in supporting and fixing the inner magnetic strip 223. The outer non-magnetic supporting member 30 supports the magnet 22 and the outer end wall 2152 of the magnetic conducting frame 21 along the axial direction of the sound emitting unit 100, and plays a role in supporting and fixing the outer magnetic strip 223. The arrangement of the two non-magnetic supporting members 30 also facilitates the adjustment of the space between the two voice coils 12, which is high in flexibility.
[0060] Further, the two non-magnetic supporting members 30 are arranged close to the first magnetic gap 212 and the second magnetic gap 23 respectively, and each forms a short-circuit ring.
[0061] Specifically, the inner non-magnetic supporting member 30 is arranged close to the first magnetic gap 212 and forms a short-circuit ring. Understandably, the short-circuit ring is also called Faraday ring, which is arranged close to the first magnetic gap 212. The current change of the voice coil 12 located in the first magnetic gap 212 causes the magnetic field to change, which generates eddy current in the magnetic conducting frame 21 of the magnetic circuit unit 20 in the low frequency area. The low resistance of the short-circuit ring allows the generated eddy current to flow into the short-circuit ring, which can effectively induce and cancel the generated eddy current, reduce energy loss, and reduce the interference of the eddy current to the magnetic field around the voice coil 12, thereby significantly reducing the 2nd harmonic distortion.
[0062] The outer non-magnetic support 30 is arranged close to the second magnetic gap 23 and forms a short circuit ring. It can be understood that the short circuit ring is also called a Faraday ring, which is arranged close to the second magnetic gap 23. The coil 12 current change located in the second magnetic gap 23 causes the magnetic field to change, which generates eddy current in the magnetic circuit unit 20 magnetic conductive frame 21 in the low frequency area, and the low resistance of the short circuit ring allows the generated eddy current to flow into the short circuit ring. It can effectively induce and offset the generated eddy current, reduce energy loss, reduce the interference of the eddy current to the magnetic field around the coil 12, thereby significantly reducing the second harmonic distortion.
[0063] Further, each non-magnetic support 30 is made of aluminum or copper or plastic, and the materials of the two non-magnetic supports 30 are the same or different.
[0064] It should be noted that when the non-magnetic support 30 is made of aluminum or copper, that is, an aluminum ring or a copper ring, it functions as a short circuit ring, especially a copper ring, which functions as a short circuit ring while being a good heat conductor, helping the heat generated by the coil 12 to be more effectively conducted to the magnetic conductive frame 21 and the magnet 22 and dissipated.
[0065] When the non-magnetic support 30 is made of plastic, it functions as a support and fixing for the magnet 22, is light in weight, low in cost, and easy to manufacture.
[0066] The materials of the two non-magnetic supports 30 can be the same or different, allowing flexible selection according to actual needs.
[0067] As shown in Figure 1 , the inner side wall 2141 surrounds a hole along the circumference of the mounting groove 211, and the hole penetrates the inner side wall 2141 along the axial direction to eliminate the air pressure change in the space communicating with the hole.
[0068] As shown in Figure 3 and Figure 5 , in another embodiment, the inner side wall 2141 surrounds a solid column along the circumference of the mounting groove 211, that is, the inner side wall 2141 is a one-piece solid structure, which has better magnetic conductivity.
[0069] In an embodiment, the magnet 22 is a one-piece magnet 22 extending along the circumference of the mounting groove 211 and being annularly closed, that is, the magnet 22 is one-piece, which is easy to manufacture and assemble and generates a uniform magnetic field. Specifically, the magnet can be a circular ring-shaped magnet 22.
[0070] As shown in Figure 2 and Figure 4As shown, in another embodiment, the magnet 22 is a split magnet 22, which includes a plurality of magnetic blocks 221 spaced along the circumference of the mounting groove 211, and a gap 222 extending along the radial direction is formed between any two adjacent magnetic blocks 221, and the gap 222 is in communication with the mounting groove 211.
[0071] The split structure of the magnet 22 can adapt to a larger voice coil 12 by flexibly adjusting the spacing between the plurality of magnetic blocks 221. Compared with the integrated magnet 22, the split magnet 22 can eliminate the risk of cracking of the magnet 22 caused by the cold and hot impact test. Moreover, the gap 222 extending along the radial direction is formed between any two adjacent magnetic blocks 221, and the gap 222 is in communication with the mounting groove 211, so as to improve the air flow and the heat dissipation capacity of the magnetic circuit unit 20, reduce the power compression caused by the excessively high temperature of the voice coil 12, and improve the power carrying capacity of the sound emitting unit 100.
[0072] Specifically, the magnet 22 can include two magnetic blocks 221, three magnetic blocks 221, four magnetic blocks 221, five magnetic blocks 221, or even six magnetic blocks 221, and the specific number of the magnetic blocks 221 can be flexibly selected according to actual needs.
[0073] It should be noted that if the second magnetic gap 23 is formed in the magnet 22, the second magnetic gap 23 divides the magnet 22 into two magnetic strips 223 spaced along the radial direction. The magnetic strip 223 can be integrally arranged or can be a split magnetic strip 223, which has high flexibility.
[0074] In an embodiment, at least one magnetic strip 223 can be an integrally arranged magnetic strip 223 extending along the circumference of the mounting groove 211 and being annularly closed, i.e., the at least one magnetic strip 223 is integrally arranged, which is easy to manufacture and assemble and can generate a uniform magnetic field. Specifically, the at least one magnetic strip 223 can be a circular ring-shaped magnet 22.
[0075] In another embodiment, the at least one magnetic strip 223 is a split magnetic strip 223, which includes a plurality of magnetic blocks 221 spaced along the circumference of the mounting groove 211, and a gap 222 extending along the radial direction is formed between any two adjacent magnetic blocks 221, and the gap 222 is in communication with the mounting groove 211. The spacing between the plurality of magnetic blocks 221 can be flexibly adjusted to adapt to a larger voice coil 12.
[0076] In another embodiment, one of the magnetic strips 223 is integrally formed, which is easy to manufacture and assemble, and generates a uniform magnetic field. The magnetic strip 223 can be a circular ring-shaped magnet 22. The other magnetic strip 223 is a split magnetic strip 223, which includes a plurality of magnetic blocks 221 spaced along the circumference of the mounting groove 211. Any two adjacent magnetic blocks 221 form a gap 222, which communicates with the mounting groove 211 and extends in the radial direction. The spacing between the plurality of magnetic blocks 221 can be flexibly adjusted to adapt to a larger voice coil 12.
[0077] In an embodiment, the magnetic blocks 221 are fan-shaped magnetic blocks 221, the small end of which faces the inner frame 214, and the large end of which faces the outer frame 215. It can be understood that if the second magnetic gap 23 is formed between the magnet 22 and the inner side wall 2141, the small end of the fan-shaped magnetic block 221 needs to be spaced apart from the inner side wall 2141 of the inner frame 214, and the large end of the fan-shaped magnetic block 221 abuts against the outer side wall 2151 of the outer frame 215. If the second magnetic gap 23 is formed between the magnet 22 and the outer side wall 2151, the large end of the fan-shaped magnetic block 221 needs to be spaced apart from the outer side wall 2151 of the outer frame 215, and the small end of the fan-shaped magnetic block 221 abuts against the inner side wall 2141 of the inner frame 214. If the second magnetic gap 23 is formed in the magnet 22, the second magnetic gap 23 divides the fan-shaped magnetic block 221, so that the position between the small end and the large end of the fan-shaped magnetic block 221 forms the second magnetic gap 23, the small end of the fan-shaped magnetic block 221 abuts against the inner side wall 2141 of the inner frame 214, and the large end of the fan-shaped magnetic block 221 abuts against the outer side wall 2151 of the outer frame 215.
[0078] The gaps 222 are uniformly arranged in the radial direction, i.e., the gaps 222 are uniformly arranged with equal width from the inside to the outside. The plurality of fan-shaped magnetic blocks 221 are consistent in shape, and the gaps 222 formed between any two adjacent magnetic blocks 221 along the circumference of the mounting groove 211 are uniform, which is beneficial to improve the uniformity and symmetry of the entire magnetic field and avoid non-linear distortion caused by uneven magnetic field.
[0079] In another embodiment, the magnetic block 221 is a rectangular magnetic block 221, one end of the rectangular magnetic block 221 faces the inner frame 214, and the other end of the rectangular magnetic block 221 faces the outer frame 215. It can be understood that if the second magnetic gap 23 is formed between the magnet 22 and the inner side wall 2141, the end of the rectangular magnetic block 221 facing the inner frame 214 needs to be spaced apart from the inner side wall 2141 of the inner frame 214, and the large end of the rectangular magnetic block 221 abuts against the outer side wall 2151 of the outer frame 215; if the second magnetic gap 23 is formed between the magnet 22 and the outer side wall 2151, the end of the rectangular magnetic block 221 facing the outer frame 215 needs to be spaced apart from the outer side wall 2151 of the outer frame 215, and the end of the rectangular magnetic block 221 facing the inner frame 214 abuts against the inner side wall 2141 of the inner frame 214; if the second magnetic gap 23 is formed in the magnet 22, the second magnetic gap 23 divides the rectangular magnetic block 221, so that the position between the two ends of the rectangular magnetic block 221 forms the second magnetic gap 23, the end of the rectangular magnetic block 221 facing the inner frame 214 abuts against the inner side wall 2141 of the inner frame 214, and the end of the rectangular magnetic block 221 facing the outer frame 215 abuts against the outer side wall 2151 of the outer frame 215.
[0080] The gap 222 is gradually changed in the radial direction, that is, the gap 222 is a gradually changed gap 222 arranged in a non-equal width from inside to outside, and the gap 222 can become larger and larger from inside to outside, improving the air flow rate and improving the heat dissipation efficiency.
[0081] It should be noted that if the second magnetic gap 23 is formed in the magnet 22, the second magnetic gap 23 divides the magnet 22 into two magnetic strips 223 spaced apart in the radial direction. If each magnetic strip 223 is a split magnetic strip 223, it includes a plurality of magnetic blocks 221 spaced apart in the circumferential direction of the mounting groove 211, and a gap 222 is formed between any two adjacent magnetic blocks 221, which communicates with the mounting groove 211 and extends in the radial direction. Then the plurality of magnetic blocks 221 of the magnetic strip 223 can be selected as a fan-shaped magnetic block 221 or a rectangular magnetic block 221, which has high flexibility. For example, the magnetic blocks 221 of the two magnetic strips 223 can be fan-shaped magnetic blocks 221 or rectangular magnetic blocks 221, or the magnetic blocks 221 of one of the two magnetic strips 223 are fan-shaped magnetic blocks 221, and the magnetic blocks 221 of the other magnetic strip 223 are rectangular magnetic blocks 221. It can be understood that if each magnetic strip 223 is a split magnetic strip 223, the two magnetic strips 223 need to be spaced apart on the side close to each other, the inner side of the magnetic block 221 on the inner side abuts against the inner frame 214, the outer side of the magnetic block 221 on the outer side abuts against the outer frame 215, and the second magnetic gap 23 is formed between the two.
[0082] In an embodiment, the first magnetic gap 212 and the second magnetic gap 23 are distributed in a staggered manner in the radial direction, that is, the first magnetic gap 212 and the second magnetic gap 23 are distributed in a staggered manner inside and outside, which is reasonable in layout and avoids interference between the two voice coils 12 during up and down vibration.
[0083] In an embodiment, the magnetic conductive frame 21 is arranged in equal thickness, which is not only easy to manufacture, but also can balance the magnetic force and weight of the magnetic conductive frame 21.
[0084] In an embodiment, along the axial direction, the end of the magnet 22 towards the opening 213 is flush with the end of the magnetic conductive frame 21 where the opening 213 is located. Figure 1 、 Figure 3 and Figure 5 As shown in Figs. 7, 8 and 9, the end of the magnet 22 towards the opening 213 is flush with the end of the magnetic conductive frame 21 where the opening 213 is located, i.e. the bottom end of the magnet 22 is flush with the bottom end of the magnetic conductive frame 21, which not only facilitates the magnetic conduction, but also facilitates the assembly of the bottom end of the magnet 22 and the bottom end of the magnetic conductive frame 21 with other structures.
[0085] The present application further provides an electronic device, which applies the sound production unit 100 as described above.
[0086] In an embodiment, the electronic device can be a car, a sound system, etc. The specific structure and use mode of the sound production unit 100 in the electronic device refer to the above embodiments. Since the electronic device adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.
[0087] The above are only the preferred embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent structure transformation made under the inventive concept of the present application, or direct / indirect application in other related technical fields is included in the protection scope of the present application.
Claims
1. A sound producing monomer, characterized in that, The sound production unit comprises: two vibration units, the two vibration units being arranged opposite along an axial direction of the sound production unit; each vibration unit comprising a diaphragm and a voice coil, one end of the voice coil being connected to the diaphragm, the voice coil being configured to drive the diaphragm to vibrate along the axial direction of the sound production unit; a magnetic circuit unit, the magnetic circuit unit comprising a magnetic conductive frame and a magnet, the magnetic conductive frame enclosing an installation slot, the magnet being accommodated in the installation slot; the magnetic conductive frame being formed with a first magnetic gap and an open end at two ends along the axial direction, the first magnetic gap being in communication with the installation slot, the magnet being located at the open end, and the magnet being magnetized along a radial direction of the sound production unit; a second magnetic gap being formed in the magnet or between the magnet and the magnetic conductive frame and being in communication with the installation slot; in one of the vibration units, one end of the voice coil away from the diaphragm is located in the first magnetic gap; in the other vibration unit, one end of the voice coil away from the diaphragm is located in the second magnetic gap.
2. The sound producing monomer of claim 1, wherein, The magnetic conductive frame is in a ring-shaped closed structure arranged around the axial direction; the magnetic conductive frame comprises an inner frame and an outer frame arranged around the inner frame; the inner frame and the outer frame enclose the ring-shaped closed installation slot; one end of the inner frame and one end of the outer frame are spaced apart along the radial direction to form the first magnetic gap, and the other end of the inner frame and the other end of the outer frame are spaced apart along the radial direction to form the open end; the second magnetic gap is formed in the magnet, between the magnet and the inner frame, or between the magnet and the outer frame.
3. The sound production unit of claim 2, wherein the inner frame comprises an inner side wall and an inner end wall, the outer frame comprises an outer side wall and an outer end wall, and the inner side wall, the inner end wall, the outer side wall, and the outer end wall jointly enclose the installation slot; the inner side wall and the outer side wall are arranged along the axial direction and are spaced apart along the radial direction; the inner side wall has a first inner end and a second inner end at two ends along the axial direction, and the outer side wall has a first outer end and a second outer end at two ends along the axial direction; the inner end wall is connected to the first inner end and extends outward along the radial direction, the outer end wall is connected to the first outer end and extends inward along the radial direction, and is spaced apart from the inner end wall to form the first magnetic gap; the second inner end and the second outer end form the open end; and the second magnetic gap is formed in the magnet, between the magnet and the inner side wall, or between the magnet and the outer side wall.
4. The sound production unit of claim 3, wherein the installation slot further comprises a non-magnetic conductive support extending along a circumferential direction of the installation slot; the non-magnetic conductive support is supported along the axial direction between the magnet and the inner end wall; an inner side of the magnet is spaced apart from the inner side wall along the radial direction to form the second magnetic gap, and an outer side of the magnet abuts against the outer side wall; or The non-magnetic support is arranged between the magnet and the outer end wall along the axial direction; the outer side of the magnet is spaced apart from the outer side wall along the radial direction to form the second magnetic gap; and the inner side of the magnet is in abutment with the inner side wall.
5. The sound production unit of claim 4, wherein, The non-magnetic support is arranged close to the first magnetic gap or the second magnetic gap and forms a short-circuit ring. And / or, The non-magnetic support is made of aluminum, copper or plastic.
6. The sound production unit of claim 3, wherein, The second magnetic gap is formed in the magnet, and the second magnetic gap divides the magnet into two magnetic strips spaced apart along the radial direction, and both of the two magnetic strips are magnetized along the radial direction; the two magnetic strips are in abutment with the inner side wall and the outer side wall, respectively, on the sides thereof facing away from each other, and the magnetic properties of the two magnetic strips on the sides thereof facing each other are opposite. The mounting groove further comprises a non-magnetic support extending along the circumferential direction of the mounting groove, and the number of the non-magnetic supports is two, and the two non-magnetic supports are spaced apart along the radial direction; one of the non-magnetic supports is arranged between the inner side wall and one of the magnetic strips arranged close to the inner side along the axial direction; and the other non-magnetic support is arranged between the outer end wall and one of the magnetic strips arranged close to the outer side along the axial direction.
7. The sound production unit of claim 6, wherein, The two non-magnetic supports are arranged close to the first magnetic gap and the second magnetic gap, respectively, and both of the two non-magnetic supports form a short-circuit ring. And / or, Each of the non-magnetic supports is made of aluminum, copper or plastic, and the materials of the two non-magnetic supports are the same or different.
8. The sound production unit of claim 3, wherein, The inner side wall surrounds a hole along the circumferential direction of the mounting groove. Or, The inner side wall surrounds a solid column along the circumferential direction of the mounting groove.
9. A sound producing monomer according to any one of claims 2 to 8, wherein, The magnet is an integrated magnet extending along the circumferential direction of the mounting groove and being annularly closed.
10. The sound producing monomer of any one of claims 2 to 8, wherein, The magnet is a split magnet, and the magnet comprises a plurality of magnetic blocks arranged along the circumferential direction of the mounting groove, and any two adjacent magnetic blocks form a gap in communication with the mounting groove, and the gap extends along the radial direction.
11. The sound production unit of claim 10, wherein, The magnetic blocks are fan-shaped magnetic blocks, the small ends of the fan-shaped magnetic blocks face the inner frame, the large ends of the fan-shaped magnetic blocks face the outer frame, and the gaps are uniformly arranged along the radial direction. Or, The magnetic blocks are rectangular magnetic blocks, one end of the rectangular magnetic blocks faces the inner frame, the other end of the rectangular magnetic blocks faces the outer frame, and the gaps are arranged in a gradient manner along the radial direction.
12. The sound production unit of any one of claims 1 to 8, wherein, The first magnetic gap and the second magnetic gap are staggered along the radial direction. And / or, The magnetic conductive frame is arranged in an equal thickness manner. And / or, Along the axial direction, the end of the magnet facing the opening is flush with the end of the magnetic conductive frame where the opening is located.
13. An electronic device, comprising: The electronic device is applied with the sound production unit of any one of claims 1 to 12.