CN110650416A - Sound producing device - Google Patents
Sound producing device Download PDFInfo
- Publication number
- CN110650416A CN110650416A CN201910921704.5A CN201910921704A CN110650416A CN 110650416 A CN110650416 A CN 110650416A CN 201910921704 A CN201910921704 A CN 201910921704A CN 110650416 A CN110650416 A CN 110650416A
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- annular
- sound generating
- connecting portion
- generating apparatus
- mounting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention discloses a sound production device, which comprises a vibrating diaphragm, a shell and a magnetic circuit system, wherein the shell comprises an installation part and an annular part, the installation part is a plastic part, the annular part is a magnetic metal part, the annular part comprises an annular body and a side magnetic conduction plate, the annular body and the side magnetic conduction plate are integrally formed, and the side magnetic conduction plate is arranged on the inner circumferential surface of the annular body; the annular part and the mounting part are integrally molded in an injection mode, the annular part is provided with a first end and a second end which are opposite, the second end faces the vibrating diaphragm, and the mounting part comprises a first connecting part arranged at the first end; the magnetic circuit system is fixed to the first connecting portion. The technical scheme of the invention can improve the heat dissipation effect of the sound generating device.
Description
Technical Field
The invention relates to the technical field of acoustic energy conversion, in particular to a sound production device.
Background
A micro-speaker is generally composed of a vibration system, a magnetic circuit system, and an auxiliary system. The secondary system comprises a housing in which the vibration system and the magnetic circuit system are normally located. The existing shell is mainly a plastic piece, and the plastic piece has low heat conduction coefficient, so the heat dissipation performance is poor, and the sound output effect of the loudspeaker is easily influenced.
Disclosure of Invention
The invention mainly aims to provide a sound production device, aiming at improving the heat dissipation effect.
In order to achieve the above object, the present invention provides a sound generating device, including:
vibrating diaphragm;
the outer shell comprises an installation part and an annular part, the installation part is a plastic part, the annular part is a magnetic metal part, the annular part comprises an annular body and a side magnetic conduction plate, the annular body and the side magnetic conduction plate are integrally formed, and the side magnetic conduction plate is arranged on the inner circumferential surface of the annular body; the annular part and the mounting part are integrally molded in an injection mode, the annular part is provided with a first end and a second end which are opposite, the second end faces the vibrating diaphragm, and the mounting part comprises a first connecting part arranged at the first end; and the number of the first and second groups,
and the magnetic circuit system is fixed on the first connecting part.
Optionally, a pad is arranged on the mounting portion, and the pad is connected with the mounting portion in an injection molding mode.
Optionally, the installation portion further includes a second connection portion disposed at the second end, a boss is disposed outside the second end of the annular body, the second connection portion is connected with the boss in an annular manner, and the second connection portion is flush with the boss toward the surface of the diaphragm and used for connecting the diaphragm.
Optionally, the number of the bosses is multiple, the plurality of bosses are arranged at intervals along the circumferential direction of the annular portion, and the second connecting portion is filled in a gap between two adjacent bosses.
Optionally, each boss is provided with a lug protruding towards the adjacent boss, and the second connecting portion wraps the lug.
Optionally, the mounting portion further includes a third connecting portion located on a circumferential surface of the annular portion and connecting the first connecting portion and the second connecting portion.
Optionally, the third connecting portion includes a circumferential segment and a plurality of connecting segments, the circumferential segment extends along the circumference of the annular portion and is connected to the first connecting portion, the circumferential segment is spaced from the second connecting portion, and the connecting segments are distributed along the circumference of the annular portion at intervals and are connected to the circumferential segment and the second connecting portion respectively.
Optionally, the first connecting portion is provided with a positioning portion, and the circumferential side of the magnetic circuit system abuts against the positioning portion.
Optionally, a fixing portion is disposed on a peripheral side of the magnetic circuit system, two opposite sides of the fixing portion are each provided with one of the positioning portions, and the fixing portion is clamped between the two positioning portions.
Optionally, the mounting portion extends annularly along a circumferential direction of the annular portion; or, annular portion includes two relative first sides, each first side all is equipped with one the installation department.
Optionally, the annular portion is provided with a fixing hole, and the mounting portion is at least partially embedded in the fixing hole.
Optionally, the annular portion further comprises a clamping flange disposed on the annular body; wherein, the clamping flanging is provided with the fixing hole.
Optionally, the mounting portion wraps the clamping flange.
Optionally, the two opposite sides of the annular body are respectively provided with the clamping flanges.
Optionally, the annular portion includes an annular body and a side magnetic conductive plate, the annular body and the side magnetic conductive plate are integrally formed, and the side magnetic conductive plate is disposed on an inner circumferential surface of the annular body.
Optionally, the annular body is provided with a plurality of side magnetic conductive plates, sound holes are formed between two adjacent side magnetic conductive plates at intervals, and an opening is formed in the magnetic circuit system corresponding to the sound holes.
Optionally, a clamping hole is formed in the side magnetic conductive plate, and the mounting portion is at least partially embedded in the clamping hole.
Optionally, a rear sound outlet penetrating through the inner surface and the outer surface is formed in the mounting portion.
According to the technical scheme, the shell is divided into the installation part and the annular part, the annular part is made of metal as a main body part, the installation part is formed on the annular part through an injection molding process, the installation part forms the first connection part at the first end of the annular part, so that the magnetic circuit system can be installed on the first connection part, and the vibrating diaphragm is installed at the second end, opposite to the first end, of the annular part. When so set up, because the heat conduction coefficient of metal is higher, so make the heat dissipation that annular portion can be better, can improve sound generating mechanism's radiating effect. Compared with metal which is difficult to form, the plastic mounting part is easier to form the first connecting part for mounting the magnetic circuit system, the process is simple, and the cost can be reduced. In addition, so can also increase the zonulae occludens of annular portion and installation department, guarantee the reliability of being connected between limit annular portion and the installation department, avoid both to break away from. And the annular body and the side magnetic conduction plate are integrally formed into the shell, so that the integral structure of the sound generating device can be simplified, and the integral structure of the sound generating device is more compact. In addition, the steps of installing the edge magnetic conduction plate can be reduced during assembly, the assembly of the sound production device can be more convenient, and the improvement of the production efficiency is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a sound generating device according to an embodiment of the present invention;
FIG. 2 is a schematic view of the sound generator of FIG. 1 from another perspective;
FIG. 3 is a schematic structural view of the housing of FIG. 1;
FIG. 4 is a schematic view of the ring portion of FIG. 3;
FIG. 5 is a schematic structural diagram of a sound generating device according to another embodiment of the present invention;
FIG. 6 is a schematic view of the sound generator of FIG. 5 from another perspective;
FIG. 7 is an enlarged view taken at A in FIG. 6;
FIG. 8 is a schematic structural view of the housing of FIG. 5;
FIG. 9 is a schematic view of the ring portion of FIG. 8;
FIG. 10 is a schematic structural diagram of a sound generating device according to still another embodiment of the present invention;
FIG. 11 is a schematic structural view of the housing of FIG. 10;
fig. 12 is a schematic view of the structure of the ring portion of fig. 10.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a sound generating device which can be a loudspeaker single body, a loudspeaker module or terminal electronic equipment such as a mobile phone, a sound box and the like.
In an embodiment of the present invention, please refer to fig. 1 to 4 in combination, the sound generating apparatus includes a diaphragm 30, a casing 10 and a magnetic circuit system, the casing 10 includes an installation portion 12 and an annular portion 11, the installation portion 12 is a plastic part, the annular portion 11 is a magnetic conductive metal part, the annular portion 11 includes an annular body 112 and a side magnetic conductive plate 113, the annular body 112 and the side magnetic conductive plate 113 are integrally formed, and the side magnetic conductive plate 113 is disposed on an inner circumferential surface of the annular body 112. The annular portion 11 and the mounting portion 12 are integrally injection-molded, the annular portion 11 has a first end and a second end opposite to each other, the second end faces the diaphragm 30, the mounting portion 12 includes a first connecting portion 121 disposed at the first end, and the magnetic circuit system is fixed to the first connecting portion 121.
The housing 10 may be square, circular, oval, racetrack, polygonal, etc. The annular portion 11 is a main body portion, and the mounting portion 12 is integrally formed with the annular portion 11 by an injection molding process. The first connecting portion 121 may be disposed on only one side of the annular portion 11, the first connecting portions 121 may be disposed on two opposite sides of the annular portion 11, and the first connecting portions 121 may extend in a ring shape along the circumferential direction of the annular portion 11. In addition, the edge magnetic conductive plates 113 may extend along the circumferential direction of the annular portion 11 to form a ring shape, or one edge magnetic conductive plate 113 may be respectively disposed on two opposite sides of the annular portion 11, or the number of the edge magnetic conductive plates 113 is plural, or the like.
The technical solution of the present invention is that the housing 10 is divided into the mounting portion 12 and the annular portion 11, the annular portion 11 is made of metal as a main body portion, the mounting portion 12 is formed on the annular portion 11 by an injection molding process, so that the mounting portion 12 forms the first connecting portion 121 at a first end of the annular portion 11, and thus the magnetic circuit system is mounted to the first connecting portion 121, and the diaphragm 30 is mounted to a second end of the annular portion 11 opposite to the first end. When the sound generating device is arranged in this way, the annular part 11 can better dissipate heat due to the higher heat conduction coefficient of the metal, and the heat dissipation effect of the sound generating device can be improved. Compared with the metal which is difficult to mold, the plastic mounting part 12 is easier to mold the first connecting part 121 for mounting the magnetic circuit system, the process is simple, and the cost can be reduced. In addition, the tight connection between the annular part 11 and the mounting part 12 can be increased, the connection reliability between the annular part 11 and the mounting part 12 is ensured, and the separation of the annular part and the mounting part is avoided. Moreover, the annular body 112 and the side magnetic conductive plate 113 are integrally formed into the casing 10, so that the overall structure of the sound generating device can be simplified, and the overall structure of the sound generating device is more compact. In addition, the steps of installing the edge magnetic conduction plate 113 can be reduced during assembly, so that the assembly of the sound generating device can be more convenient, and the production efficiency can be improved.
In this embodiment, the side magnetic conductive plate 113 extends in a long shape along the circumferential direction of the annular body 112. Because limit magnetic conduction board 113 and annular body 112 integrated into one piece, so on the one hand can strengthen the intensity and the rigidity of annular portion 11, on the other hand can also make limit magnetic conduction board 113's size great to can better adaptation magnetic circuit, in order to guarantee better magnetic conduction effect.
In addition, in this embodiment, the annular body 112 is provided with a plurality of side magnetic conductive plates 113, sound holes 118 (refer to fig. 12) are formed at intervals between two adjacent side magnetic conductive plates 113, and the magnetic circuit system is provided with openings 50 corresponding to the sound holes 118. A plurality of edge magnetic conductive plates 113 are arranged at intervals along the circumferential direction of the annular body 112, the opening 50 (refer to fig. 10) is formed between the magnetic conductive yoke 20 and the casing 10, and the opening 50 is communicated with the sound outlet 118. So that the air flow inside the diaphragm 30 is radiated out through the sound outlet holes 118. Moreover, when the annular body 112 is provided with the plurality of side magnetic conductive plates 113, the strength and rigidity of the annular part 11 can be enhanced, and the magnetic circuit system can be conveniently provided with more magnets, so that the sound production effect of the sound production device can be enhanced.
Referring to fig. 3 and fig. 4 again, in the present embodiment, the side magnetic conductive plate 113 is provided with a clamping hole 1131, and the mounting portion 12 is at least partially embedded in the clamping hole 1131. Particularly, the end portion that is close to installation portion 12 of limit magnetic conduction board 113 is located to joint hole 1131, and installation portion 12 parcel limit magnetic conduction board 113 is equipped with the end portion of joint hole 1131, so can increase the area of contact of installation portion 12 and annular portion 11, and then can improve the stability of installation portion 12.
In the present embodiment, the mounting portion 12 extends in a ring shape along the circumferential direction of the annular portion 11; alternatively, the annular portion 11 includes two opposite first sides 114, and each first side 114 is provided with a mounting portion 12. Specifically, the first side 114 is located on the annular body, so that the space for disposing the first connecting portion 121 can be increased, and the magnetic circuit system can be better fixed. When the mounting portion 12 is annular, the annular portion 11 may be partially fitted in the mounting portion 12, or may be only partially fitted in the mounting portion 12. When each first side 114 is provided with one mounting portion 12, the two mounting portions 12 are independently arranged, so that the first side 114 is partially or completely embedded in the mounting portion 12.
Referring to fig. 5 to 9, in the present embodiment, the mounting portion 12 further includes a second connecting portion 122 disposed at the second end, a boss 1151 is disposed at an outer side of the second end of the annular body 112, the second connecting portion 122 and the boss 1151 form an annular connection, and the second connecting portion 122 is flush with a surface of the boss 1151 facing the diaphragm 30 and is used for connecting the diaphragm 30. Specifically, the annular portion 11 further includes two opposite second side edges 115, the second side edges 115 are also located on the annular body 112, the two first side edges 114 and the two second side edges 115 are sequentially and alternately distributed, the second connecting portion 122 is disposed on the first side edge 114, and the boss 1151 is disposed on the second side edge 115 and located on a surface of the second side edge 115 facing the diaphragm 30. In this way, the second connection portions 122 and the bosses 1151 are sequentially and alternately connected in an annular distribution along the circumferential direction of the annular body 112, and the diaphragm 30 is simultaneously connected to the second connection portions 122 and the bosses 1551.
The thickness of the first side 114 can be reduced, so that the second connecting portion 122 and the second side 115 jointly supply the diaphragm 30 to be mounted, the weight of the housing 10 can be reduced, and the reduction of the overall weight of the sound generating device is facilitated. And set up the size that boss 1151 can also increase shell 10 along its direction that link up, and then increase the size of shell 10 internal sound chamber, be favorable to improving the sound production effect. Wherein the inner portion of the second side 115 may be compressed such that the outer portion of the second side 115 forms the boss 1151, or the outer portion of the second side 115 may be upset to form the boss 1151, and so on. The first connection portion 121 and the second connection portion 122 may be connected to each other or may be provided independently of each other. Of course, in other embodiments, the second connecting portion 122 may be annularly disposed along the circumference of the annular body 112, or the second connecting portion 122 may be disposed around the boss 1151, and so on. Furthermore, a boss 1151 may also be provided on the surface of the second side 115 facing away from the diaphragm 30.
Referring to fig. 9 and 12, in an embodiment, the number of the bosses 1151 is multiple, the multiple bosses 1151 are arranged at intervals along the circumferential direction of the annular portion 11, and the second connecting portion 122 fills a gap between two adjacent bosses 1151. Specifically, a plurality of bosses 1151 are provided on the surface of the second side edge 115 facing the diaphragm 30. So on the one hand can increase the fixed effect of installation department 12 and annular body 112, strengthen the stability of installation department 12, on the other hand can increase the height of shell 10 through boss 1151 to guarantee that sound generating mechanism has great vibration space and guarantees sound generating effect, so can also reduce the material of annular portion 11 through the connected form of second connecting portion 122 and boss 1151 in addition, and then can reduce sound generating mechanism's whole weight. Here, the plurality of bosses 1151 may be uniformly distributed along the circumferential direction of the annular portion 11, or a plurality of bosses 1151 may be provided on each first side edge 114, and so on.
In this embodiment, each boss 1151 is provided with a lug 1152 protruding toward the adjacent boss 1151, and the second connecting portion 122 wraps around the lug 1152. Specifically, the lugs 1152 of two adjacent bosses 1151 are arranged facing each other, and the two lugs 1152 are embedded in the second connecting portion 122, so that the second connecting portion 122 can be ensured to have a better fixing effect at the gap between the two bosses 1151, the second connecting portion 122 is prevented from falling off easily, and the lugs 1152 can also serve as reinforcing ribs to increase the strength of the second connecting portion 122.
In addition, a pad 40 (see fig. 3) is disposed on the mounting portion 11, and the pad 40 is connected to the mounting portion 11 by injection molding. Specifically, the pad 40 and the mounting portion are integrally injection-molded, so that the pad 40 can be conveniently arranged, and the short circuit caused by the contact of the pad 40 and the annular portion 11 can be avoided. In addition, in the embodiment, the second connection portion 122 is provided with a positioning protrusion 1221, and the positioning protrusion 1221 is provided on a surface of the second connection portion 122 facing the diaphragm 30, so that when the diaphragm 30 is mounted, the positioning and mounting of the diaphragm 30 are facilitated. In addition, in order to further improve the positioning and mounting effect of the diaphragm 30, the number of the positioning convex portions 1221 may be multiple, and the multiple positioning convex portions 1221 are arranged at intervals along the circumferential direction of the annular portion 11. In order to facilitate the installation of the diaphragm 30 and ensure that the installation effect of the diaphragm 30 is better, in this embodiment, the surface of the second connecting portion 122 facing the diaphragm 30 is flush with the end surface of the second end.
In this embodiment, the mounting portion 12 further includes a third connecting portion 123, and the third connecting portion 123 is located on the circumferential surface of the annular portion 11 and connects the first connecting portion 121 and the second connecting portion 122. Specifically, the first connecting portion 121, the second connecting portion 122, and the third connecting portion 123 are integrally molded, wherein the third connecting portion 123 may be provided only on the inner circumferential surface or the outer circumferential surface of the annular portion 11, or the third connecting portion 123 may be provided on both the inner circumferential surface and the outer circumferential surface of the annular portion 11. The first connecting portion 121 and the second connecting portion 122 can be fixed by the third connecting portion 123, so that the mounting portion 12 can wrap at least a part of the annular portion 11, the contact area between the mounting portion 12 and the annular portion 11 is increased, and the stability of the mounting portion 12 on the annular portion 11 can be improved. In addition, the third connection portion 123 may be wrapped around the connection portion between the annular portion 11 and the boss 1151, and the third connection portion 123 may be annularly provided. To further improve the stability of the mounting portion 12.
Referring to fig. 10 and fig. 11, in the present embodiment, the third connecting portion 123 includes a circumferential section 1231 and a plurality of connecting sections 1232, the circumferential section 1231 extends along the circumferential direction of the annular portion 11 and is connected to the first connecting portion 121, the circumferential section 1231 is spaced apart from the second connecting portion 122, and the plurality of connecting sections 1232 are spaced apart along the circumferential direction of the annular portion 11 and are respectively connected to the circumferential section 1231 and the second connecting portion 122. Specifically, the circumferential section 1231 extends in a ring shape along the circumferential direction of the annular portion 11. The circumferential section 1231 may be disposed on the inner circumferential surface of the annular portion 11, or may be disposed on the outer circumferential surface of the annular portion 11. Alternatively, the circumferential sections 1231 may be provided on both the inner circumferential surface and the outer circumferential surface of the annular portion 11, and in this embodiment, the circumferential sections 1231 on the inner circumferential surface and the outer circumferential surface of the annular portion 11 may be connected to each other or may be independent of each other.
In this embodiment, by providing the circumferential section 1231, the contact area between the third connecting portion 123 and the annular portion 11 can be increased, and the third connecting portion 123 is uniformly disposed on the annular portion 11, so that the stability of the mounting portion 12 can be further improved. And compare in directly extending and connect first connecting portion 121 and second connecting portion 122 with circle section 1231, through setting up a plurality of linkage segments 1232 along circumference interval distribution, when guaranteeing the connection effect, can reduce the size of circle section 1231, be favorable to reducing sound generating mechanism's overall dimension, also can save material reduce cost.
Referring to fig. 2 and fig. 3, or fig. 7 and fig. 8, in the present embodiment, the first connecting portion 121 is provided with a positioning portion 1211, and the peripheral side of the magnetic circuit system abuts against the positioning portion 1211. Specifically, the structure of the positioning portion 1211 has various configurations, for example, the positioning portion 1211 may be a groove formed by recessing on the first connection portion 121, such that the peripheral side of the magnetic circuit system is disposed in the groove; or the positioning portion 1211 includes a plurality of projections, the peripheral side of the magnetic circuit system is held between the plurality of projections, and the like. This facilitates the molding of the positioning portion 1211 compared to the positioning portion 1211 provided on the annular portion 11, and the positioning portion 1211 can be integrally molded with the first connecting portion 121, thereby improving the compactness of the structure of the housing 10.
In this embodiment, a fixing portion 21 is disposed on the periphery of the magnetic circuit system, a positioning portion 1211 is disposed on each of two opposite sides of the fixing portion 21, and the fixing portion 21 is clamped between the two positioning portions 1211. Specifically, the magnetic circuit system includes a yoke 20, the fixing portion 21 is provided on the periphery of the yoke 20, the fixing portion 21 protrudes from the side of the yoke 20, and the fixing portion 21 is integrally formed with the yoke 20. The fixing portion 21 has two first side surfaces (not shown) adjacent to and opposite to the magnetic conductive yoke 20, and a second side surface (not shown) away from the magnetic conductive yoke 20, and the two first side surfaces are respectively abutted against the two positioning portions 1211 to position and mount the magnetic conductive yoke 20, so as to limit the movement of the magnetic conductive yoke 20 in the arrangement direction of the two positioning portions 1211.
In this embodiment, the number of the fixing portions 21 is two, the two fixing portions 21 are respectively disposed on two opposite sides of the magnetic yoke 20, the two opposite sides of the annular portion 11 are respectively provided with the first connecting portion 121, the first connecting portion 121 is provided with two positioning portions 1211 corresponding to each fixing portion 21, and each fixing portion 21 is clamped between the two positioning portions 1211, so that the two sides of the magnetic yoke 20 are fixed more uniformly, and the fixing effect is better. Of course, in other embodiments, the number of the fixing portions 21 may be one, three, or four, etc.
In addition, the positioning portion 1211 has various structures, for example, in an embodiment, the positioning portion 1211 is extended toward the inner side of the annular portion 11, the first connecting portion 121 has a limiting surface 1212 facing the fixing portion 21, the limiting surface 1212 is located between the two positioning portions 1211 of the clamping and fixing portion 21, and the limiting surface 1212 abuts against the second side surface of the fixing portion 21, so that the magnetic yoke 20 can be limited to move along the extending direction of the two fixing portions 21. When the positioning portion 1211 abuts against the first side surface of the fixing portion 21, the movement of the guide yoke 20 on the plane perpendicular to the penetrating direction of the annular portion 11 can be restricted, that is, the fixing portion 21 can be positioned and mounted on the mounting portion 12 well, the magnetic circuit system and the vibration system are prevented from being shifted from each other during the mounting process, and the mounting effect of the sound generating device can be ensured. Of course, in other embodiments, as shown in fig. 10 and 11, the positioning portion 1211 may be protruded on an end surface of the first connection portion 121, and the like.
In addition, referring to fig. 6 and fig. 7 again, in the embodiment, the first connection portion 121 is further provided with a glue receiving slot 1213, a notch of the glue receiving slot 1213 is disposed toward the fixing portion 21, and the glue receiving slot 1213 is located between the two positioning protrusions 1221, so that the fixing portion 21 can be fixed on the first connection portion 121 by gluing the glue receiving slot 1213. Further, a protruding block 1214 is disposed on a wall of the glue accommodating groove 1213 to increase a contact area between the sealant and the first connecting portion 121, so as to improve a connecting effect of the sealant. Of course, in other embodiments, grooves or the like may be provided on the groove wall of the glue accommodating groove 1213.
Referring to fig. 4 and 9 again, in the present embodiment, the annular portion 11 is provided with a fixing hole 116, and the mounting portion 12 is at least partially embedded in the fixing hole 116. Specifically, the fixing hole 116 penetrates the annular portion 11, and when the mounting portion 12 is injection-molded on the annular portion 11, the molten plastic can flow into the fixing hole 116 during molding, and the mounting portion 12 is formed on the annular portion 11 after the plastic is cooled and solidified, so that the mounting portion 12 is embedded in the fixing hole 116. This can increase the contact area between the mounting portion 12 and the annular portion 11, and can improve the connection reliability between the mounting portion 12 and the annular portion 11. Wherein, the mounting portion 12 may be formed only on one side of the annular portion 11, such that the mounting portion 12 passes through a portion of the fixing hole 116 and forms a catching portion on the other side of the annular portion 11. The mounting portions 12 may be provided on both sides of the annular portion 11, or the mounting portions 12 may be wrapped around the annular portion 11 where the fixing holes 116 are provided, or the like. In addition, the number of the fixing holes 116 may be plural, and the effect of connecting the mounting portion 12 and the ring portion 11 can be further improved.
In addition, in this embodiment, the fixing hole 116 is also formed at the joint of the boss 1151 and the annular body 112, so that the connection area between the mounting portion 12 and the boss 1151 can be increased, the stability of the mounting portion 12 can be further increased, and the mounting portion 12 and the boss 1151 can be prevented from being separated. Of course, in other embodiments, the mounting apertures 116 may be provided on the bosses 1151.
In this embodiment, the annular portion 11 further includes a clamping flange 117 disposed on the annular body 112; wherein, the fastening flange 117 is provided with a fixing hole 116. Specifically, the clamping flange 117 and the annular body 11 are integrally formed, and the clamping flange 117 is at least partially embedded in the mounting portion 12. That is, the mounting portion 12 may include only the portion of the snap flanges 117 provided with the fixing hole 116, or the mounting portion 12 may completely wrap the snap flanges 117 therein. This can increase the connecting area between the mounting portion 12 and the annular portion 11, increase the stability of the mounting portion 12, and prevent the mounting portion 12 from easily falling off. Of course, in other embodiments, the connection between the annular body 112 and the snap-fit flange 117 may be provided with a fixing hole 116.
The clamping flange 117 may have only one fixing hole 116, or may have a plurality of fixing holes 116. In addition, the clamping flange 117 may be disposed at the first end or the second end, and may be disposed straight along the penetrating direction of the annular portion 11, or may be disposed in a bent manner, or the like; or the clamping flanging 117 is arranged on the inner circumferential surface of the annular part 11 and extends towards the other opposite inner circumferential surface of the annular part 11; or the clamping flanging 117 is provided with the inner circumferential surface of the annular part 11 and extends towards the direction of the first end or the second end; or the clamping flange 117 is provided with the outer peripheral surface of the annular portion 11, and the specific structure can refer to the manner of being provided with the inner peripheral surface, which is not described in detail herein.
In one embodiment, mounting portion 12 wraps around snap flanges 117. Specifically, the clamping flange 117 extends toward the first end, and the first connecting portion 121 wraps the clamping flange 117. So further increase the area of contact of first connecting portion 121 and joint turn-ups 117 for first connecting portion 121's stability is better, also can improve the overall stability of installation department 12. Of course, in other embodiments, the clamping flange 117 may also extend toward the second end, and the second connecting portion 122 may wrap the clamping flange 117. Or the third connecting part 123 wraps the clamping flanging 117 and the like.
In addition, in the present embodiment, the snap flanges 117 extend in an elongated shape along the circumferential direction of the ring portion 11. So can increase joint turn-ups 117 and first connecting portion 121's connection area, and then can increase first connecting portion 121's size, can improve first connecting portion 121 and magnetic circuit's area of contact, guarantee that magnetic circuit fixes more firmly. When the size of joint turn-ups 117 is great, can be equipped with a plurality of fixed orificess 116 on joint turn-ups 117, wherein, can be so that the aperture of the fixed orificess 116 that is close to the tip is less than the aperture of middle part fixed orifices 116, so can guarantee joint turn-ups 117 at the fixed effect of middle part position and first connecting portion 121, also can guarantee the intensity of joint turn-ups 117 at the tip. Of course, the hole diameters of the plurality of fixing holes 116 may be made uniform, and the like.
In one embodiment, the two opposite sides of the annular body 112 are respectively provided with a clamping flange 117. Specifically, the first side 114 is provided with the clamping flange 117, that is, each first side 114 is provided with the clamping flange 117, so that the fixing effect of each mounting portion 12 can be ensured. When the mounting portion 12 is annularly arranged, the contact area between the annular portion 11 and the mounting portion 12 can be increased, and the stability of the mounting portion 12 is further ensured.
Of course, in other embodiments, a plurality of clamping flanges 117 may be provided, the plurality of clamping flanges 117 are arranged at intervals along the circumferential direction of the annular portion 11, and the mounting portion 12 is filled in the gap between two adjacent clamping flanges 117. Specifically, the plurality of clamping flanges 117 all extend towards the direction of the second end, the end face of the clamping flange 117 departing from the annular portion 11 abuts against the diaphragm 30, the second connecting portion 122 is filled in the gap between the two adjacent clamping flanges 117, and the third connecting portion 123 is connected with the first connecting portion 121 and the second connecting portion 122. So on the one hand can increase the stability of installation department 12, on the other hand can increase the height of shell 10 to guarantee that sound generating mechanism has great vibration space and guarantees the sound producing effect, but so can also reduce the material of annular portion 11, and then can reduce sound generating mechanism's whole weight. The plurality of clamping flanges 117 may be uniformly distributed along the circumferential direction of the annular portion 11, or a plurality of clamping flanges 117 may be disposed on each first side edge 114, and the like. In addition, in the embodiment that the connection portion of the annular portion 11 and the clamping flange 117 is provided with the fixing hole 116, the third connecting portion 123 wraps the connection portion of the annular portion 11 and the clamping flange 117, and the third connecting portion 123 is annularly arranged.
In one embodiment, the mounting portion 12 is provided with a rear sound outlet (not shown) extending through the inner and outer surfaces. Wherein, can be equipped with back phonate hole at one of them connecting portion 121, second connecting portion 122 and third connecting portion 123, compare in setting up back phonate hole on annular portion 11, like this can the shaping back phonate hole simultaneously when shaping installation department 12, simple process, the shaping is convenient, can avoid the position of back phonate hole to interfere with other structures moreover.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (17)
1. A sound generating device, comprising:
vibrating diaphragm;
the outer shell comprises an installation part and an annular part, the installation part is a plastic part, the annular part is a magnetic metal part, the annular part comprises an annular body and a side magnetic conduction plate, the annular body and the side magnetic conduction plate are integrally formed, and the side magnetic conduction plate is arranged on the inner circumferential surface of the annular body; the annular part and the mounting part are integrally molded in an injection mode, the annular part is provided with a first end and a second end which are opposite, the second end faces the vibrating diaphragm, and the mounting part comprises a first connecting part arranged at the first end; and the number of the first and second groups,
and the magnetic circuit system is fixed on the first connecting part.
2. The sound generating apparatus of claim 1, wherein the mounting portion has a bonding pad thereon, and the bonding pad is connected to the mounting portion by injection molding.
3. The sound-generating apparatus as claimed in claim 1, wherein the mounting portion further includes a second connecting portion disposed at the second end, a boss is disposed at an outer side of the second end of the ring-shaped body, the second connecting portion is connected to the boss in a ring shape, and the second connecting portion is flush with a surface of the boss facing the diaphragm and is used for connecting the diaphragm.
4. The sound generating apparatus as claimed in claim 3, wherein the number of the bosses is plural, the plural bosses are arranged at intervals along the circumferential direction of the annular portion, and the second connecting portion fills a gap between two adjacent bosses.
5. The sound generating apparatus as claimed in claim 4, wherein each of said bosses is provided with a lug protruding toward an adjacent boss, and said second connecting portion wraps around said lug.
6. The apparatus according to claim 3, wherein said mounting portion further comprises a third connecting portion located on a circumferential surface of said annular portion and connecting said first connecting portion and said second connecting portion.
7. The sound generating apparatus according to claim 6, wherein the third connecting portion includes a circumferential segment extending in a circumferential direction of the annular portion and connecting to the first connecting portion, and a plurality of connecting segments spaced apart from the second connecting portion and respectively connecting to the circumferential segment and the second connecting portion.
8. The sound generating apparatus as claimed in claim 1, wherein the first connecting portion is provided with a positioning portion, and a peripheral side of the magnetic circuit system abuts against the positioning portion.
9. The sound generating apparatus as claimed in claim 8, wherein a fixing portion is provided around the magnetic circuit system, and the fixing portion is provided with a positioning portion on each of opposite sides thereof, and the fixing portion is held between the two positioning portions.
10. The sound generating apparatus of claim 1, wherein said mounting portion extends annularly along a circumference of said annular portion; or, annular portion includes two relative first sides, each first side all is equipped with one the installation department.
11. The sound generating apparatus as claimed in any one of claims 1 to 10, wherein the annular portion is provided with a fixing hole, and the mounting portion is at least partially fitted in the fixing hole.
12. The sound generating apparatus as claimed in claim 11, wherein the annular portion further comprises a snap-fit flange disposed on the annular body, and the snap-fit flange is provided with the fixing hole.
13. The sound generating apparatus of claim 12, wherein said mounting portion wraps around said snap flange.
14. The sound generating apparatus as claimed in claim 12, wherein said snap flanges are provided on opposite sides of said ring-shaped body.
15. The sound generating apparatus as claimed in claim 1, wherein the annular body has a plurality of side magnetic plates, the space between two adjacent side magnetic plates forms a sound outlet, and the magnetic circuit system has an opening corresponding to the sound outlet.
16. The sound generating apparatus as claimed in claim 1, wherein the edge magnetic conductive plate is provided with a fastening hole, and the mounting portion is at least partially embedded in the fastening hole.
17. The sound generating apparatus of claim 1, wherein said mounting portion has a rear sound outlet extending through said inner and outer surfaces.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910921704.5A CN110650416A (en) | 2019-09-26 | 2019-09-26 | Sound producing device |
| CN202010292620.2A CN111328004A (en) | 2019-09-26 | 2020-04-13 | Sound producing device |
| CN202020548637.5U CN211630384U (en) | 2019-09-26 | 2020-04-13 | Sound producing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910921704.5A CN110650416A (en) | 2019-09-26 | 2019-09-26 | Sound producing device |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910921704.5A Pending CN110650416A (en) | 2019-09-26 | 2019-09-26 | Sound producing device |
| CN202010292620.2A Pending CN111328004A (en) | 2019-09-26 | 2020-04-13 | Sound producing device |
| CN202020548637.5U Active CN211630384U (en) | 2019-09-26 | 2020-04-13 | Sound producing device |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010292620.2A Pending CN111328004A (en) | 2019-09-26 | 2020-04-13 | Sound producing device |
| CN202020548637.5U Active CN211630384U (en) | 2019-09-26 | 2020-04-13 | Sound producing device |
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| CN208285535U (en) * | 2018-04-27 | 2018-12-25 | 歌尔科技有限公司 | A kind of loudspeaker, loudspeaker mould group and electronic equipment |
| CN108513230B (en) * | 2018-06-25 | 2024-02-09 | 歌尔股份有限公司 | Sound producing device and portable terminal |
| CN208638614U (en) * | 2018-08-01 | 2019-03-22 | 瑞声科技(新加坡)有限公司 | Microphone device |
| CN208940235U (en) * | 2018-11-14 | 2019-06-04 | 歌尔科技有限公司 | A kind of sounding device |
| CN110248296B (en) * | 2019-06-27 | 2020-12-08 | 歌尔股份有限公司 | Sound producing device |
| CN110650416A (en) * | 2019-09-26 | 2020-01-03 | 歌尔股份有限公司 | Sound producing device |
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| CN211630384U (en) | 2020-10-02 |
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