CN216930311U - Miniature speaker and terminal equipment - Google Patents

Abstract

The utility model relates to the technical field of loudspeakers, and particularly discloses a miniature loudspeaker and terminal equipment. The utility model relates to a micro loudspeaker, which comprises a sound film system, a magnetic circuit system, a voice coil and a plurality of elastic connecting pieces, wherein the voice coil and the plurality of elastic connecting pieces are arranged between the sound film system and the magnetic circuit system, two sides of each elastic connecting piece are respectively fixedly arranged with the sound film system and the magnetic circuit system, each elastic connecting piece is provided with an elastic adjusting part with an annular cross section, and the sound film system and the magnetic circuit system are supported in the laminating direction of the sound film system and the magnetic circuit system. The micro loudspeaker reduces the difficulty of the generation process and the production cost by arranging the elastic connecting piece with a simple structure, and can ensure the output power of the loudspeaker while removing the elastic wave supporting structure to reduce the volume of the loudspeaker.

Description

Miniature speaker and terminal equipment

Technical Field

The application relates to the technical field of speakers, in particular to a micro speaker and terminal equipment.

Background

The application of speakers to terminal devices such as televisions, tablet computers, and mobile phones is becoming more and more popular. The prior loudspeaker is generally provided with a sound film, an elastic wave supporting structure, a voice coil and a magnetic circuit, wherein one end of the voice coil is connected with the sound film, the other end of the voice coil is arranged in a gap of the magnetic circuit, the elastic wave supporting structure is fixedly connected with the voice coil and the magnetic circuit, Lorentz force is generated by inputting signal current to the voice coil, the voice coil drives the sound film to vibrate and sound in the gap of the magnetic circuit corresponding to the alternating motion of the signal current, and the elastic wave supporting structure limits the polarization of the voice coil and the magnetic circuit.

With the continuous reduction of the volume of the terminal equipment, the volume requirement of the loudspeaker is higher and higher, however, the space requirement of the elastic wave supporting structure is large, and the continuous reduction of the volume of the loudspeaker is difficult. If the damper support structure is removed, the output power of the speaker is reduced and the difficulty of the manufacturing process is increased.

SUMMERY OF THE UTILITY MODEL

One object of an embodiment of the present invention is to: the utility model provides a micro loudspeaker, it can solve and set up when playing ripples bearing structure among the prior art that the speaker is bulky, gets rid of and play ripples bearing structure then can reduce the output of speaker and increase the problem of the production technology degree of difficulty.

Another object of an embodiment of the present invention is to: provided is a terminal device which can solve the problem of a large speaker volume in the prior art.

In order to achieve the purpose, the following technical scheme is adopted in the application:

on one hand, the micro loudspeaker comprises a sound film system, a magnetic circuit system, a voice coil and a plurality of elastic connecting pieces, wherein the voice coil and the plurality of elastic connecting pieces are arranged between the sound film system and the magnetic circuit system, two sides of each elastic connecting piece are respectively fixedly arranged with the sound film system and the magnetic circuit system, each elastic connecting piece is provided with an elastic adjusting portion with an annular cross section, and the sound film system and the magnetic circuit system are supported in the stacking direction of the sound film system and the magnetic circuit system.

As a preferable scheme of the micro-speaker, the elastic connecting member includes a first connecting portion, an elastic adjusting portion and a second connecting portion, which are sequentially disposed, the first connecting portion is fixedly disposed with the sound diaphragm system, the second connecting portion is fixedly disposed with the magnetic circuit system, and the elastic adjusting portion can limit a distance between the first connecting portion and the second connecting portion.

As a preferable mode of the micro-speaker, the elastic adjustment portion includes two bent elastic wall plates, and a gap is provided between the two elastic wall plates.

As a preferable mode of the micro-speaker, the elastic connecting member is formed by folding two elastic members, and an elastic folding portion is provided between the two elastic members.

As a preferred scheme of the micro-speaker, the elastic part comprises a first connecting block, a bent elastic plate and a second connecting block which are sequentially arranged, and a gap is formed between the elastic plates of the two elastic parts after the two elastic parts are folded.

As a preferable mode of the micro-speaker, a folding groove is provided at a side of the elastic folding portion, and the folding groove is used for providing an elastic deformation space when the elastic folding portion is folded.

As a preferred scheme of the micro-speaker, the two elastic parts are provided with a buckle structure or a viscose structure at the same side, and the two elastic parts are fixedly connected through the buckle structure or the viscose structure after being folded.

As a preferable scheme of the micro-speaker, the micro-speaker further comprises a support member arranged between the voice diaphragm system and the voice coil, and the support member is used for fixedly connecting the voice diaphragm system and the voice coil.

As a preferable scheme of the micro-speaker, the support member includes a plate body, a through hole penetrates through the plate body, and the through hole is communicated with the voice coil.

As a preferred scheme of the micro-speaker, a groove is formed in one side, facing the voice coil, of the plate body, and the edge of the end portion of the voice coil is clamped into the groove.

As a preferable scheme of the micro-speaker, the magnetic circuit system includes a frame and a magnetic circuit structure, the frame or the magnetic circuit structure is fixedly connected to the elastic connector, and the voice coil is disposed in a magnetic gap of the magnetic circuit structure.

As a preferred scheme of the micro-speaker, the magnetic circuit structure comprises a washer, a permanent magnet and a magnetic conduction bowl, one end of the permanent magnet is fixedly arranged with the washer, the other end of the permanent magnet is fixedly arranged with the bowl bottom of the magnetic conduction bowl, and the magnetic gap is formed between the bowl wall of the magnetic conduction bowl and the permanent magnet.

As a preferable scheme of the micro-speaker, the sound film system includes a sound film body and a hanging edge wrapping the edge of the sound film body, and the edge of the hanging edge is fixed to the frame.

As a preferable mode of the micro-speaker, the magnetic circuit system further includes a terminal provided on the frame, the terminal being provided with a cable hole for fixing an electric wire of the voice coil.

As a preferable mode of the micro-speaker, the terminal is protrudingly provided with a connection plate, the connection plate is penetratingly provided with a positioning hole, and the electric wire of the voice coil is disposed in the cable hole and the positioning hole.

In another aspect, a terminal device is provided, which includes the micro-speaker.

The beneficial effect of this application does:

the elastic connecting piece is arranged to fixedly arrange the sound film system and the magnetic circuit system, so that a certain elastic deformation space is reserved while the relative positions of the sound film system and the magnetic circuit system can be positioned, and the polarization of the sound film body of the sound film system during vibration is buffered. One end of the voice coil is fixedly arranged with the voice film body of the voice film system, the other end of the voice coil is arranged in a magnetic gap of the magnetic circuit system, magnetic induction lines are densely distributed in the magnetic gap of the magnetic circuit system, and the voice coil is formed by stacking a plurality of conducting wire coils. According to faraday's law, when a signal current corresponding to an audio signal is applied to the voice coil, the moving charges in the voice coil generate a lorentz force in the magnetic field of the magnetic gap, and the voice coil is driven by the lorentz force to move in the magnetic gap. When the voice coil is driven by the alternating signal current to do alternating motion, the voice diaphragm body is driven to vibrate to repeatedly push air to produce sound. Because elastic connection spare drives the spacing support of voice diaphragm system and magnetic circuit, can restrict the voice coil loudspeaker voice coil and order about the direction that the voice diaphragm body vibrates, guarantee the amplitude of voice diaphragm body, also can avoid reducing the sound production power that signal current ordered about the voice coil loudspeaker voice coil motion.

Therefore, the micro loudspeaker provided by the embodiment of the utility model has the advantages that the generation process difficulty and the production cost are reduced by arranging the elastic connecting piece with a simple structure, and the output power of the loudspeaker can be ensured while the volume of the loudspeaker is reduced by removing the elastic wave supporting structure.

Drawings

The present application will be described in further detail below with reference to the accompanying drawings and examples.

Fig. 1 is a cross-sectional side view of a micro-speaker according to an embodiment of the present disclosure.

Fig. 2 is a schematic structural diagram of an elastic connection element according to an embodiment of the present application.

Fig. 3 is a schematic structural view of an elastic connecting member according to another embodiment of the present application before folding.

Fig. 4 is a schematic structural view of the folded elastic connecting member according to another embodiment of the present application.

Fig. 5 is an isometric view of an elastic connector provided in accordance with another embodiment of the present application, prior to folding.

Fig. 6 is an isometric view of a folded resilient connector according to another embodiment of the present application.

FIG. 7 is an isometric view of a support provided in accordance with an embodiment of the present application.

Fig. 8 is an exploded schematic structural diagram of a micro-speaker according to an embodiment of the present disclosure.

Fig. 9 is an isometric view of a terminal provided by an embodiment of the present application.

Fig. 10 is a schematic partial structure diagram of a terminal device according to an embodiment of the present application.

In the figure:

1. a micro speaker; 11. an elastic connecting member; 111. a first connection portion; 112. an elastic adjustment section; 1121. an elastic wall plate; 113. a second connecting portion; 114. an elastic member; 1141. a first connection block; 1142. an elastic plate; 1143. a second connecting block; 1144. a buckle structure; 1145. a glue structure; 115. an elastic folded portion; 1151. a folding slot;

12. a voice diaphragm system; 121. a voice diaphragm body; 122. hanging edges;

13. a magnetic circuit system; 131. a basin stand; 132. a magnetic circuit structure; 1321. washer; 1322. a permanent magnet; 1323. a magnetically conductive bowl; 133. a terminal; 1331. a cable hole; 1332. a connecting plate; 1333. positioning holes;

14. a voice coil; 15. a support member; 151. a plate body; 1511. a groove; 152. and a through hole.

Detailed Description

In order to make the technical problems solved, technical solutions adopted, and technical effects achieved by the present application clearer, the following describes technical solutions of embodiments of the present application in further detail, and it is obvious that the described embodiments are only a part of embodiments of the present application, but not all 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 application.

In the description of the present application, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In order to reduce the volume of the speaker, reduce the difficulty of the speaker production process, and ensure the output power of the speaker, as shown in fig. 1, this embodiment provides a micro speaker 1, which includes a sound film system 12, a magnetic circuit system 13, and a voice coil 14 and a plurality of elastic connecting members 11 arranged between the sound film system 12 and the magnetic circuit system 13, wherein two sides of the elastic connecting members 11 are respectively fixed to the sound film system 12 and the magnetic circuit system 13, and the elastic connecting members 11 have elastic adjusting portions 112 with annular cross sections, and support the sound film system 12 and the magnetic circuit system 13 in the stacking direction of the sound film system 12 and the magnetic circuit system 13.

The utility model can position the relative position of the sound film system 12 and the magnetic circuit system 13 and reserve a certain elastic deformation space to buffer the polarization of the sound film system 12 when vibrating by arranging the elastic connecting piece 11 to fixedly arrange the sound film system 12 and the magnetic circuit system 13. One end of the voice coil 14 is fixed with the voice diaphragm system 12, the other end is arranged in the magnetic gap of the magnetic circuit system 13, magnetic induction lines are densely distributed in the magnetic gap of the magnetic circuit system 13, and the voice coil 14 is formed by stacking a plurality of conducting wire coils. According to faraday's law, when the voice coil 14 is energized with a signal current corresponding to an audio signal, the moving charges in the voice coil 14 generate a lorentz force in the magnetic field of the magnetic gap, and the voice coil 14 is driven by the lorentz force to move in the magnetic gap. When the voice coil 14 is driven by the alternating signal current to perform the alternating motion, the voice diaphragm body 121 is driven to vibrate to repeatedly push the air to generate sound. Due to the limited support of the elastic connecting piece 11 to the voice diaphragm system 12 and the magnetic circuit system 13, the direction in which the voice coil 14 drives the voice diaphragm system 12 to vibrate can be limited, the amplitude of the voice diaphragm system 12 can be ensured, and the reduction of the sound generating power of the signal current driving the voice coil 14 to move can also be avoided.

Therefore, the micro-speaker 1 of the embodiment of the present invention reduces the difficulty of the production process and the production cost by providing the elastic connection member 11 with a simple structure, and can ensure the output power of the speaker while reducing the volume of the speaker by removing the elastic wave support structure.

In the scheme, the number of the elastic connecting pieces 11 is three, and the three elastic connecting pieces 11 are uniformly arranged along the length direction of the loudspeaker.

The implementation manner of the elastic connection element 11 may be various, and in a specific embodiment, referring to fig. 2, the elastic connection element 11 includes a first connection portion 111, an elastic adjustment portion 112, and a second connection portion 113, which are sequentially disposed, the first connection portion 111 is fixedly disposed with the sound diaphragm system 12, the second connection portion 113 is fixedly disposed with the magnetic circuit system 13, and the elastic adjustment portion 112 may be fixedly disposed between the sound diaphragm system 12 and the magnetic circuit system 13. By utilizing the elastic deformation capability of the elastic adjusting part 112, when the diaphragm system 12 is driven to vibrate by the voice coil 14, the distance between the first connecting part 111 and the second connecting part 113 can be adaptively changed through the elastic adjusting part 112, that is, the distance between the diaphragm system 12 and the magnetic circuit system 13 can be elastically changed, so that the diaphragm system 12 can form larger amplitude following the alternating motion of the voice coil 14, more air is pushed, and the sound generating power of the micro-speaker 1 is further improved.

Further, with reference to fig. 2, the elastic adjustment portion 112 includes two bent elastic wall plates 1121, a gap is provided between the two bent elastic wall plates 1121, when the first connection portion 111 and the second connection portion 113 are pressed or stretched, the two elastic wall plates 1121 can be bent or stretched continuously along with the tendency of being pressed or stretched, so as to improve the elastic deformation efficiency. The gap between the two elastic wall plates 1121 in this embodiment is used to provide an elastic deformation space for the first connection portion 111 and the second connection portion 113, and the thickness of the elastic adjustment portion 112 can be further reduced, so as to reduce the weight and material consumption of the elastic connection member 11.

In another specific embodiment, referring to fig. 3, the elastic connection member 11 is formed by folding two elastic members 114, an elastic folding portion 115 is disposed between the two elastic members 114, and the elastic connection member 11 maintains the elastic buffering performance of the sound diaphragm system 12 by using the elastic deformation capability of the elastic folding portion 115 and the elastic members 114. The folded elastic connecting member 11 can be unfolded before use, so that the flat state of the elastic folding portion 115 and the two elastic members 114 is maintained, the production and the processing are convenient, and the occupied space is reduced. After folded for use, the end parts of the two elastic members 114 are kept flush, so that the elastic connecting member 11 is fixedly connected with the sound diaphragm system 12 and the magnetic circuit system 13.

Preferably, with continued reference to fig. 3, the elastic member 114 includes a first connection block 1141, a bent elastic plate 1142, and a second connection block 1143, which are sequentially arranged, and the second connection block 1143 of the previous elastic member 114 is connected with the first connection block 1141 of the subsequent elastic member 114 by the elastic folded portion 115. After the two elastic members 114 are folded, the first connecting block 1141 of the previous elastic member 114 and the second connecting block 1143 of the next elastic member 114 are fixedly disposed, so as to form a structure similar to the first connecting portion 111 in the above embodiment and achieve the same effect; similarly, after the two elastic members 114 are folded, the second connecting block 1143 of the previous elastic member 114 and the first connecting block 1141 of the next elastic member 114 are fixedly disposed, so as to form a structure similar to the second connecting portion 113 of the above embodiment and achieve the same effect.

Further, referring to fig. 4, a gap is provided between the elastic plates 1142 of the two folded elastic members 114, and when the first connecting block 1141 and the second connecting block 1143 of the same elastic member 114 are decompressed or stretched, the elastic plates 1142 may continue to bend or stretch along with the tendency of being squeezed or stretched, thereby improving the elastic deformation efficiency of the elastic members 114. In the elastic connection member 11 formed by folding the two elastic members 114 (as shown in fig. 6), the gap between the two elastic plates 1142 is used to provide an elastic deformation space, and the thickness of the elastic plates 1142 can be further reduced, thereby reducing the weight and material consumption of the elastic connection member 11.

As another preferable mode, referring to fig. 5, the side surface of the elastic folding portion 115 is provided with a folding groove 1151, the folding groove 1151 is an area where elasticity is weak, the elastic folding portion 115 may be divided into a plurality of segments by providing the folding groove 1151, an elastic deformation space is directly provided by the folding groove 1151 when the elastic folding portion 115 is folded, and the first connecting block 1141 and the second connecting block 1143 of the two elastic members 114 are directly fixed, so that stability of the folded elastic folding portion 115 can be easily maintained, and a risk of the elastic folding portion 115 returning to a position before folding is reduced.

Still preferably, the fixing structure after the two elastic members 114 are folded may be various, referring to fig. 5, a fastening structure 1144 or an adhesive structure 1145 is disposed on the same side of the two elastic members 114, and the two elastic members 114 are folded and fixedly connected through the fastening structure 1144 or the adhesive structure 1145, which is beneficial to enhancing the connection strength between the elastic members 114, and is also convenient for the subsequent detachment between the two elastic members 114, and can be recycled.

Specifically, the elastic connection member 11 is made of a silicone material or a rubber material. Wherein, the rubber is a high-elasticity polymer material with reversible deformation, has elasticity at room temperature, can generate larger deformation under the action of small external force, and can recover the original shape after the external force is removed. Silica gel is nontoxic and tasteless, soft, strong in toughness, cold-resistant and not brittle, excellent in insulativity and elasticity, and can also generate large deformation under the action of small external force. Therefore, the elastic connection member 11 made of the silicone material or the rubber material can maintain both elasticity and wear resistance and corrosion resistance.

In particular, since the end surface area of the voice coil 14 is small, in order to improve the connection strength with the diaphragm system 12, referring to fig. 1, the micro-speaker 1 according to the embodiment of the present invention further includes a support member 15 disposed between the diaphragm system 12 and the voice coil 14. The voice coil 14 is fixedly connected with the support 15, and meanwhile, the end surface area of the support 15 is larger than that of the voice coil 14, so that the connection strength between the voice coil 14 and the voice diaphragm system 12 can be enhanced, and the connection strength between the voice coil 14 and the voice diaphragm system 12 is further enhanced.

Preferably, referring to fig. 7, the support 15 includes a plate body 151, the plate body 151 is provided with a through hole 152, the through hole 152 is communicated with the voice coil 14, so as to reduce the air flow between the voice coil 14 and the diaphragm system 12, ensure that the diaphragm system 12 can push sufficient air to generate sound when vibrating, and ensure the sound generating power of the micro-speaker 1.

More preferably, with continued reference to fig. 7, a groove 1511 is provided on a side of the plate 151 facing the voice coil 14, and an end edge of the voice coil 14 is snapped into the groove 1511, so that the connection strength between the support 15 and the voice coil 14 can be enhanced, and the connection stability between the voice coil 14 and the diaphragm body 121 can be further improved.

In a preferred embodiment, the support member 15 is made of a plate body 151 with a uniform plate thickness, and has a groove 1511 on the side close to the voice coil 14 and a bump on the side close to the voice diaphragm system 12, or vice versa, so that the weight of the support member 15 can be reduced while the connection strength of the support member 15 with the voice coil 14 and the voice diaphragm system 12 is ensured.

Specifically, referring to fig. 1, magnetic circuit system 13 includes a fixedly disposed frame 131 and a magnetic circuit structure 132, magnetic circuit structure 132 is fixedly disposed by frame 131, magnetic circuit structure 132 is provided with a magnetic gap, and voice coil 14 is disposed in the magnetic gap of magnetic circuit structure 132. In addition, the elastic connection member 11 of the present embodiment is fixedly connected to the frame 131 or the magnetic circuit structure 132, so that the elastic connection member 11 can be disposed inside the voice coil 14 or outside the voice coil 14, and can be fixedly connected to the voice diaphragm systems 12 with different area sizes, thereby meeting different size requirements to manufacture corresponding micro-speakers 1.

More specifically, referring to fig. 1 and 8, the magnetic structure 132 includes a Washer 1321(Washer), a permanent magnet 1322, and a magnetic bowl 1323, wherein both the Washer 1321 and the magnetic bowl 1323 can shield the magnetic field and reflect the magnetic induction lines. In the embodiment, one end of the permanent magnet 1322 is fixedly arranged with the washer 1321, and the other end of the permanent magnet 1322 is fixedly arranged with the bottom of the magnetic conduction bowl 1323, so that the trend of the magnetic induction line at the upper end part of the permanent magnet 1322 is blocked by the washer 1321; the magnetic induction lines of the lower end portion of the permanent magnet 1322 can be shielded by the magnetic conduction bowl 1323 arranged at the lower end portion of the permanent magnet 1322, the upper end portion of the permanent magnet 1322 is an N pole, the lower end portion of the permanent magnet 1322 is an S pole, the magnetic induction lines emitted from the upper end portion of the permanent magnet 1322 are made to be dispersed to the periphery along the bottom plane of the washer 1321, and when the magnetic induction lines emitted from the upper end portion of the permanent magnet 1322 touch the magnetic conduction bowl 1323, the magnetic induction lines return to the lower end portion of the permanent magnet 1322 along the bowl wall of the magnetic conduction bowl 1323. That is to say, the permanent magnet 1322 is disposed between the washer 1321 and the magnetic bowl 1323, and a magnetic gap with uniform and stable magnetic induction lines is formed between the bowl wall of the magnetic bowl 1323 and the permanent magnet 1322, so that the voice coil 14 to which the alternating current is supplied can vibrate more stably in the magnetic gap.

Still alternatively, referring to fig. 1, the sound diaphragm system 12 specifically includes a sound diaphragm body 121 and a hanging edge 122 wrapping the edge of the sound diaphragm body 121, where the hanging edge 122 is a material with excellent elastic deformation performance, and the edge of the hanging edge 122 and the basin frame 131 are fixedly disposed, so that the vibration position of the sound diaphragm body 121 can be stabilized, and the vibration of the sound diaphragm body 121 is not affected.

Preferably, the shape of the hanging edge 122 may be a racetrack shape or a square shape, and the number of the hanging edge 122 and the voice film body 121 may be single or multiple to match different use requirements, which is not specifically limited in this embodiment.

In addition, referring to fig. 9, the magnetic circuit system 13 further includes a terminal 133 disposed on the frame 131, the terminal 133 is provided with a cable hole 1331 for fixing the electric wire of the voice coil 14, and the electric wire of the voice coil 14 is inserted into the cable hole 1331 for fixing, so that the electric wire can be prevented from affecting the vibration of the voice coil 14 in the magnetic gap. In this embodiment, the wire of the voice coil 14 is generally a lead wire, and is formed by winding one or more copper alloy or silver alloy sheets, and then twisting or weaving the copper alloy or silver alloy sheets, and may be further subjected to wax treatment, waterproof treatment, antistatic treatment, and the like as needed.

Alternatively, the fixing of the terminal 133 and the frame 131 may be achieved by an adhesive structure, or may be achieved by a riveting or welding structure, and this embodiment is not particularly limited.

Further, with continued reference to fig. 9, the terminal 133 is protrudingly provided with a connection plate 1332, the connection plate 1332 is provided with a positioning hole 1333 therethrough, the electric wire of the voice coil 14 is disposed in the cable hole 1331 and the positioning hole 1333, and the electric wire of the voice coil 14 can be set to a designated bending angle and curvature by the fixing action of the positioning hole 1333 and the cable hole 1331, so as to cope with different wiring environments, and simultaneously avoid the electric wire from being crushed to cause deformation and breakage or from being wound to cause maintenance confusion of a post-processed wire.

As shown in fig. 10, an embodiment of the present invention further provides a terminal device, including the micro-speaker 1 according to any one of the above embodiments. The micro-speaker 1 in this embodiment may have the same structure and achieve the same effect as the micro-speaker 1 in the above embodiments, and the details are not repeated in this embodiment.

Through setting up simple, the little and stable micro loudspeaker 1 of sound production power of production technology, can promote terminal equipment's tone quality and use and experience.

In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are used in an orientation or positional relationship merely for convenience in description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present application. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principles of the present application have been described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the present application and is not to be construed in any way as limiting the scope of the application. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present application without inventive effort, which shall fall within the scope of the present application.

Claims (16)

1. The micro-speaker is characterized by comprising a sound film system (12), a magnetic circuit system (13), a voice coil (14) and a plurality of elastic connecting pieces (11), wherein the voice coil (14) and the elastic connecting pieces (11) are arranged between the sound film system (12) and the magnetic circuit system (13), two sides of each elastic connecting piece (11) are respectively fixedly arranged with the sound film system (12) and the magnetic circuit system (13), each elastic connecting piece (11) is provided with an elastic adjusting part (112) with an annular cross section, and the sound film system (12) and the magnetic circuit system (13) are supported in the laminating direction of the sound film system (12) and the magnetic circuit system (13).

2. The micro-speaker of claim 1, wherein the elastic connecting member (11) comprises a first connecting portion (111), an elastic adjusting portion (112) and a second connecting portion (113) arranged in sequence, the first connecting portion (111) is fixedly arranged with the sound diaphragm system (12), the second connecting portion (113) is fixedly arranged with the magnetic circuit system (13), and the elastic adjusting portion (112) can limit the distance between the first connecting portion (111) and the second connecting portion (113).

3. The micro-speaker as claimed in claim 2, wherein the elastic adjustment part (112) comprises two bent elastic walls (1121), and a gap is provided between the two elastic walls (1121).

4. The micro-speaker as claimed in claim 1, wherein the elastic connecting member (11) is formed by folding two elastic members (114), and an elastic folding portion (115) is provided between the two elastic members (114).

5. The micro-speaker of claim 4, wherein the elastic member (114) comprises a first connecting block (1141), a bent elastic plate (1142) and a second connecting block (1143) arranged in sequence, and a gap is formed between the elastic plates (1142) of the two folded elastic members (114).

6. The micro-speaker as claimed in claim 4, wherein a side of the elastic folded portion (115) is provided with a folding groove (1151), and the folding groove (1151) is used to provide an elastic deformation space when the elastic folded portion (115) is folded.

7. The micro-speaker as claimed in claim 4, wherein a snap structure (1144) or an adhesive structure (1145) is disposed on the same side of the two elastic members (114), and the two elastic members (114) are fixedly connected by the snap structure (1144) or the adhesive structure (1145) after being folded.

8. The microspeaker of claim 1 further comprising a support (15) disposed between the diaphragm system (12) and the voice coil (14), the support (15) being adapted to fixedly couple the diaphragm system (12) and the voice coil (14).

9. The micro-speaker as claimed in claim 8, wherein the support member (15) comprises a plate body (151), the plate body (151) is provided with a through hole (152) therethrough, and the through hole (152) communicates with the voice coil (14).

10. A micro-speaker as claimed in claim 9, wherein the plate body (151) is provided with a recess (1511) on the side facing the voice coil (14), and the end edge of the voice coil (14) snaps into the recess (1511).

11. The micro-speaker as claimed in claim 10, wherein the magnetic circuit system (13) comprises a fixedly disposed frame (131) and a magnetic circuit structure (132), the elastic connecting member (11) is fixedly connected to the frame (131) or the magnetic circuit structure (132), and the voice coil (14) is disposed in a magnetic gap of the magnetic circuit structure (132).

12. The micro-speaker according to claim 11, wherein the magnetic structure (132) comprises a washer (1321), a permanent magnet (1322) and a magnetically conductive bowl (1323), one end of the permanent magnet (1322) is fixedly disposed with the washer (1321), the other end is fixedly disposed with a bowl bottom of the magnetically conductive bowl (1323), and the magnetic gap is formed between a bowl wall of the magnetically conductive bowl (1323) and the permanent magnet (1322).

13. The micro-speaker as claimed in claim 11, wherein the diaphragm system (12) comprises a diaphragm body (121) and a suspension edge (122) wrapping the edge of the diaphragm body (121), and the edge of the suspension edge (122) is fixedly arranged with the frame (131).

14. The micro-speaker as claimed in claim 11, wherein the magnetic circuit system (13) further comprises a terminal (133) provided on the frame (131), the terminal (133) being provided with a cable hole (1331) for fixing an electric wire of the voice coil (14).

15. The micro-speaker as claimed in claim 14, wherein the terminal (133) is protrudingly provided with a connection plate (1332), the connection plate (1332) is penetratingly provided with a positioning hole (1333), and the electric wire of the voice coil (14) is disposed in the cable hole (1331) and the positioning hole (1333).

16. A terminal device comprising the micro-speaker according to any one of claims 1 to 15.

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