Patent Publication Number: US-11665481-B2

Title: Speaker device

Description:
TECHNICAL FIELD 
     The present disclosure relates to the field of electro-acoustic conversion, in particular to a speaker device for a portable mobile electronic product. 
     BACKGROUND 
     Speaker devices are widely used in portable mobile electronic products, such as mobile phones, to convert electrical signals into sound signals. The speaker devices have high volume and desirable low-frequency sound effects. 
     In the related art, a speaker device includes a frame, a vibration unit fixed to the frame and a magnetic circuit unit driving the vibration unit to vibrate and produce sound. The vibration unit includes a diaphragm fixed to the frame, a voice coil inserted into a magnetic gap to drive the diaphragm to vibrate and produce sound, and an elastic support assembly opposite to and spaced apart from the diaphragm and connected to the voice coil. The elastic support assembly surrounds an outer side of the magnetic circuit unit and are spaced apart from the magnetic circuit unit. For the convenience of assembly, the frame includes a frame body and a frame extension portion stacked on the frame body. The vibration unit is fixed to the frame extension portion, the magnetic circuit unit is fixed to the frame body, and the frame extension portion is installed to the frame body. 
     In the related art, the elastic support assembly is directly attached and fixed to the frame, and a gluing manner thereof results in low overall strength of the speaker device. Once the speaker device is dropped, the elastic support assembly is prone to be separated from the frame. Therefore, the speaker device having such a structure has low reliability. 
     Therefore, it needs to provide a speaker device, which solve the above-mentioned technical problem. 
     SUMMARY 
     An objective of the present disclosure is to provide a speaker device with high overall strength and reliability. 
     An embodiment of the present disclosure provides a speaker device, including a frame; a vibration unit fixed to the frame; and a magnetic circuit unit driving the vibration unit to vibrate and produce sound and including a magnetic gap. The vibration unit includes a diaphragm fixed to the frame, a voice coil inserted into the magnetic gap to drive the diaphragm to vibrate and produce sound and at least one elastic support assembly opposite to and spaced apart from the diaphragm and connected to the voice coil; and the at least one elastic support assembly surrounds an outer side of the magnetic circuit unit and is spaced apart from the magnetic circuit unit. The frame includes a bottom wall and a side wall bending and extending from a periphery of the bottom wall of the frame, and an outer periphery of the diaphragm is fixed to the side wall of the frame. The vibration unit further includes a fixing ring configured to fix the at least one elastic support assembly to the frame, and the fixing ring surrounds the magnetic circuit unit. The frame is made of a metal material, and the fixing ring is a metal ring fixed to the side wall of the frame by welding. 
     As an improvement, the side wall of the frame includes a first side wall connected to the bottom wall of the frame and an extension wall having a ring shape and stacked on the first side wall; the outer periphery of the diaphragm is fixed to an inner peripheral side of the extension wall; and the fixing ring is fixed to the extension wall by welding. 
     As an improvement, the diaphragm includes a diaphragm fixing portion fixed to the magnetic circuit unit, a dome surrounding the diaphragm fixing portion, and a suspension surrounding the dome; an inner peripheral side of the dome is fixed to a side of the diaphragm fixing portion close to the suspension, and an outer peripheral side of the dome is fixed to a side of the suspension close to the diaphragm fixing portion; the suspension includes a suspension body fixed to the outer peripheral side of the dome, a suspension fixing portion bending and extending from an outer peripheral side of the suspension body toward the inner peripheral side of the extension wall, and suspension supporting portions extending from the suspension fixing portion toward the at least one elastic support assembly along the inner peripheral side of the extension wall; and the suspension fixing portion and the suspension supporting portions are fixed to the inner peripheral side of the extension wall. 
     As an improvement, the voice coil has a rectangular structure; the at least one elastic support assembly includes two elastic support assemblies, and the two elastic support assemblies are spaced apart from each other and located at two opposite sides of the voice coil; and welding positions of the fixing ring and the extension wall are located between the two elastic support assemblies. 
     As an improvement, the two elastic support assemblies are respectively located at two opposite sides of a short axis of the voice coil; and the welding positions of the fixing ring and the extension wall are respectively located at two opposite sides of a long axis of the voice coil. 
     As an improvement, one of the at least one elastic support assembly includes an elastic member opposite to and spaced apart from the diaphragm, and an auxiliary diaphragm provided at a side of the elastic member away from the diaphragm; a side of the elastic member close to the frame is attached to a side of the fixing ring away from the diaphragm, and a side of the elastic member away from the frame is connected to the voice coil; a side of the auxiliary diaphragm close to the frame is attached to a side of the fixing ring away from the diaphragm, and a side of the auxiliary diaphragm away from the frame is connected to the voice coil; and the side of the elastic member away from the frame and the side of the auxiliary diaphragm away from the frame are spaced apart from each other. 
     As an improvement, the suspension fixing portion has a rectangular structure with rounded corners; the suspension fixing portion includes four straight sides and four round corners, each of which connects respective two adjacent straight sides of the four straight sides; and the suspension supporting portions are located at positions of the four rounded corners and fixed to the extension wall by gluing. 
     As an improvement, the vibration unit further includes a holder fixed to the diaphragm; and the holder includes an end extending into the magnetic gap and fixed to and connected to the voice coil, and another end extending toward the at least one elastic support assembly and fixed to and connected to the at least one elastic support assembly. 
     As an improvement, the fixing ring includes a fixing ring body having a ring shape, and a fixing ring fixing portion bending and extending from an inner peripheral side of the fixing ring body in a direction away from the diaphragm; the fixing ring body is fixed to the extension wall by welding; and the fixing ring fixing portion is fixed to the auxiliary diaphragm. The auxiliary diaphragm includes an auxiliary diaphragm suspension, a first auxiliary diaphragm fixing portion bending and extending from an inner side of the auxiliary diaphragm suspension toward the magnetic circuit unit, a first auxiliary diaphragm extension portion extending from the first auxiliary diaphragm fixing portion toward the diaphragm, a second auxiliary diaphragm fixing portion bending and extending from an outer side of the auxiliary diaphragm suspension toward the frame, and a second auxiliary diaphragm extension portion extending from the second auxiliary diaphragm fixing portion toward the diaphragm. The first auxiliary diaphragm fixing portion is fixed to an end of the holder away from the diaphragm, and the first auxiliary diaphragm extension portion is attached and fixed to a side of the holder close to the frame. The second auxiliary diaphragm fixing portion is fixed to a side of the fixing ring fixing portion away from the diaphragm; an inner side of the second auxiliary diaphragm extension portion is attached and fixed to an outer side of the fixing ring fixing portion; and a side of the second auxiliary diaphragm extension portion close to the diaphragm abuts against and is fixed to a side of the fixing ring body away from the diaphragm. The elastic members includes a first fixing arm fixed to a side of the fixing ring body close to the diaphragm, a second fixing arm fixed to the holder, and an elastic arm connecting the first fixing arm and the second fixing arm; and the second fixing arm is spaced apart from the auxiliary diaphragm. 
     As an improvement, the holder includes a holder body having a ring shape, a first holder fixing portion bending and extending from an inner peripheral side of the holder body toward the voice coil, and a second holder fixing portion bending and extending from an outer peripheral side of the holder body toward the at least one elastic support assembly; the holder body is fixed to the suspension body; and the first holder fixing portion is fixed to and connected to the voice coil; and the first auxiliary diaphragm fixing portion is fixed to the second holder fixing portion, and the first auxiliary diaphragm extension portion is fixed to a side of the second holder fixing portion close to the frame; the second holder fixing portion includes a holder hole; and the second fixing arm passes through the holder hole to be fixed to the second holder fixing portion. 
     Compared with the related art, in the present disclosure, the frame is made of a metal material, the fixing ring is a metal ring, and the fixing ring is fixed to the side wall by welding and thus fixes the elastic support assembly to the frame. With this simple structure, the elastic support assembly and the fixing ring can easily be fixed to the frame. There is no need to separately design a structural support feature on the fixing ring or the frame to add a part or process step, which simplifies the assembly process of the speaker device. In addition, the elastic support assembly, the fixing ring and the frame of the speaker device form a firm overall structure. This structure enhances the stability of the vibration unit to deal with the dropping of the speaker device, thereby improving the overall strength and reliability of the speaker device. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
       To describe the technical solutions in the embodiments of the present disclosure more clearly, the drawings required for describing the embodiments are briefly described below. Apparently, the drawings in the following description show merely some embodiments of the present disclosure, and those of ordinary skill in the art may still derive other drawings from these drawings without creative efforts. 
         FIG.  1    is a three-dimensional view illustrating a structure of a speaker device according to an embodiment of the present disclosure; 
         FIG.  2    is a three-dimensional exploded view illustrating a structure of a speaker device according to an embodiment of the present disclosure; 
         FIG.  3    is a sectional view taken along line A-A in  FIG.  1   ; 
         FIG.  4    is a sectional view taken along line B-B in  FIG.  1   ; 
         FIG.  5    is an enlarged view of C shown in  FIG.  4   ; 
         FIG.  6    is a three-dimensional view illustrating a structure of a speaker device after assembly according to an embodiment of the present disclosure; 
         FIG.  7    is a three-dimensional view illustrating a structure of auxiliary diaphragms of a speaker device according to an embodiment of the present disclosure; and 
         FIG.  8    is a three-dimensional view illustrating a structure a fixing ring of a speaker device according to an embodiment of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION OF EMBODIMENTS 
     The technical solutions of the embodiments of the present disclosure are described in detail below with reference to the drawings. Apparently, the described embodiments are merely some rather than all of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present disclosure without creative efforts should fall within the protection scope of the present disclosure. 
     Referring to  FIG.  1    to  FIG.  8   , the present disclosure provides a speaker device  100 . 
     The speaker device  100  includes a frame  1 , a vibration unit  2  fixed to the frame  1  and a magnetic circuit unit  3  driving the vibration unit  2  to vibrate and produce sound. The magnetic circuit unit  3  includes a magnetic gap  30 . 
     The frame  1  is ring-shaped. The frame  1  includes a bottom wall  11  and a side wall  12  bending and extending from a periphery of the bottom wall  11 . 
     In this implementation, the magnetic circuit unit  3  is fixed to the bottom wall  11 . In other implementation, the magnetic circuit unit  3  may be fixed to an inner peripheral side of the side wall  12 . 
     The side wall  12  may be formed as an integral structure. In this implementation, the side wall  12  is a structure including separated parts. Specifically, the side wall  12  includes a first side wall  121  connected to the bottom wall  11  and a ring-shaped extension wall  122  stacked on the first side wall  121 . Such a structure facilitates assembly and manufacture of the speaker device  100 . 
     The vibration unit  2  includes a diaphragm  21  fixed to the frame  1 , a voice coil  22  inserted into the magnetic gap  30  to drive the diaphragm  21  to vibrate and produce sound, an elastic support assembly  23  opposite to and spaced apart from the diaphragm  21  and connected to the voice coil  22 , a holder  24  fixed to the diaphragm  21 , and a fixing ring  25  configured to fix the elastic support assembly  23  to the frame  1 . The fixing ring  25  surrounds the magnetic circuit unit  3 . 
     In this implementation, an outer periphery of the diaphragm  21  is fixed to an inner peripheral side of the side wall  12 . In other words, the outer periphery of the diaphragm  21  is fixed to the first side wall  121  through the extension wall  122 . 
     Specifically, the diaphragm  21  includes a diaphragm fixing portion  211  fixed to the magnetic circuit unit  3 , a dome  212  surrounding the diaphragm fixing portion  211 , and a suspension  213  surrounding the dome  212 . 
     The diaphragm fixing portion  211  is configured to fix the diaphragm to the magnetic circuit unit  3 . In this implementation, the diaphragm fixing portion  211  is fixed to and covers the magnetic circuit unit  3 . In other implementation, the diaphragm fixing portion  211  may be ring-shaped, and the diaphragm fixing portion  211  is fixed to and surrounds the magnetic circuit unit  3 . 
     The dome  212  is ring-shaped. The dome  212  is configured to enable the diaphragm  21  to vibrate and produce sound. Specifically, an inner peripheral side of the dome  212  is fixed to a side of the diaphragm fixing portion  211  close to the suspension  213 , and an outer peripheral side of the dome  212  is fixed to a side of the suspension  213  close to the diaphragm fixing portion  211 . 
     The suspension  213  includes a suspension body  2131  fixed to the outer peripheral side of the dome  212 , a suspension fixing portion  2132  bending and extending from an outer peripheral side of the suspension body  2131  toward an inner peripheral side of the extension wall  122 , and suspension supporting portions  2133  extending from the suspension fixing portion  2132  toward the elastic support assembly  23  along the inner peripheral side of the extension wall  122 . 
     The suspension fixing portion  2132  is attached and fixed to the inner peripheral side of the extension wall  122 . In this implementation, the suspension fixing portion  2132  extends from the outer peripheral side of the suspension body  211  along the inner peripheral side of the extension wall  122  in a direction away from the elastic support assembly  23 . With this structure, a bonding area of the suspension fixing portion  2132  and the frame  1  is increased, thereby obtaining a strong fixing effect, and thus improving the overall strength and reliability of the speaker device  100 . 
     The suspension supporting portions  2133  are fixed to a side of the elastic support assembly  23  away from the bottom wall  11 . The suspension supporting portions  2133  are configured to fix the elastic support assembly  23  to the frame  1 . The suspension supporting portions  2133  extends from the suspension fixing portion  2132  toward the elastic support assembly  23  along the inner peripheral side of the extension wall  122 . The suspension supporting portions  2133  are fixed to the inner peripheral side of the extension wall  122 . With this structure, the bonding area of the suspension supporting portions  2133  and the frame  1  is increased, thereby improving the overall strength and reliability of the speaker device  100 . This structure also facilitates assembly and manufacture of the speaker device  100 . 
     Optionally, the suspension fixing portion  2132  has a rectangular structure having rounded corners  2132   b . The suspension fixing portion  2132  includes four straight sides  2132   a  and four round corners  2132   b  respectively connecting two adjacent straight sides  2132   a  of the four straight sides  2132   a . The suspension supporting portions  2133  are respectively located at positions of the rounded corners  2132   b . In other words, the suspension supporting portions  2133  are formed by extending the rounded corners  2132   b  of the suspension fixing portion  2132 . In this structure, the space of the diaphragm  21  and the frame  1  at positions of the rounded corners  2132   b  can be fully utilized, thereby increasing the bonding area between the suspension supporting portions  2133  and the frame  1 . In this way, the stability of the vibration unit  2  is enhanced to deal with the dropping of the speaker device  100 , thereby improving the overall strength and reliability of the speaker device  100 . 
     In this implementation, the suspension supporting portions  2133  are fixed to the extension wall  122  by gluing. Such a structure facilitates fixing and sealing between the diaphragm  21  and the frame  1 , thereby improving the overall strength and reliability of the speaker device  100 . 
     The voice coil  22  is inserted and suspended in the magnetic gap  30  to drive the diaphragm  21  to produce sound. 
     The elastic support assembly  23  is provided between the bottom wall  11  and the diaphragm  21 . Specifically, the elastic support assembly  23  surrounds an outer side of the magnetic circuit unit  3  and is spaced apart from the magnetic circuit unit  3 . The elastic support assembly  23  strengthens the vibration effect of the diaphragm  21  so as to improve the acoustic performance of the speaker device  100 , and also balances the swing of the vibration unit  2  so as to improve the stability of the speaker device  100 . 
     Specifically, the elastic support assembly  23  includes an elastic member  231  opposite to and spaced apart from the diaphragm  21 , and an auxiliary diaphragm  232  provided at a side of the elastic member  231  away from the diaphragm  21 . 
     The elastic member  231  includes a first fixing arm  2311  fixed to a side of a fixing ring body  251  close to the diaphragm  21 , a second fixing arm  2312  fixed to the holder  24 , and an elastic arm  2313  connecting the first fixing arm  2311  and the second fixing arm  2312 . The second fixing arm  2312  is spaced apart from the auxiliary diaphragm  232 . 
     In this implementation, the elastic member  231  is a flexible printed circuit (FPC) electrically connected to the voice coil  22 . The elastic member  231  also serves to provide an electrical signal for a lead wire of the voice coil  22 , thereby avoiding the use of a lead wire structure to introduce the electrical signal to the voice coil  22 . Therefore, a risk of wire breakage is avoided, and the reliability of the speaker device  100  is improved. 
     The auxiliary diaphragm  232  includes an auxiliary diaphragm suspension  2321 , a first auxiliary diaphragm fixing portion  2322  bending and extending from an inner side of the auxiliary diaphragm suspension  2321  toward the magnetic circuit unit  3 , a first auxiliary diaphragm extension portion  2323  extending from the first auxiliary diaphragm fixing portion  2322  toward the diaphragm  21 , a second auxiliary diaphragm fixing portion  2324  bending and extending from an outer side of the auxiliary diaphragm suspension  2321  toward the frame  1 , and a second auxiliary diaphragm extension portion  2325  extending from the second auxiliary diaphragm fixing portion  2324  toward the diaphragm  21 . 
     In this implementation, the fixing ring  25  includes the ring-shaped fixing ring body  251  and a fixing ring fixing portion  252  bending and extending from an inner peripheral side of the fixing ring body  251  in a direction away from the diaphragm  21 . 
     The frame  1  is made of a metal material, and the fixing ring  25  is a metal ring. The fixing ring  25  is fixed to the side wall  12  by welding. Specifically, the fixing ring body  251  is fixed to the extension wall  122  by welding. With this simple structure, the elastic support assembly  23  and the fixing ring  25  can easily be fixed to the frame, and there is no need to separately design a structural support feature on the fixing ring or the frame to add a part or process step, which simplifies the assembly process of the speaker device  100 ; moreover, the elastic support assembly  23 , the fixing ring  25  and the frame  1  of the speaker device  100  can form a firm overall structure. This structure enhances the stability of the vibration unit  2  to deal with the dropping of the speaker device  100 , thereby improving the overall strength and reliability of the speaker device  100 . 
     The fixing ring fixing portion  252  is fixed to the auxiliary diaphragm  232 . 
     In this implementation, the voice coil  22  has a rectangular structure. Two elastic support assemblies  23  are provided, and the two elastic support assemblies  23  are spaced apart at two opposite sides of the voice coil  22 . Welding positions of the fixing ring  25  and the extension wall  122  are located between the two elastic support assemblies  23 . The welding positions facilitate the assembly of the speaker device  100  without affecting the fixing positions of the elastic support assemblies  23  and the fixing ring  25 . The welding positions of the fixing ring  25  and the extension wall  122  facilitate assembly and prevent damage to the elastic support assemblies  23  during welding. The fixing ring  25  enhances the overall strength of the frame  1  and improves the reliability of the speaker device  100 . 
     Optionally, the two elastic support assemblies  23  are respectively located at two opposite sides of a short axis of the voice coil  22 . The welding positions of the fixing ring  25  and the extension wall  122  are respectively located at two opposite sides of a long axis of the voice coil  22 . This structure adopts a symmetrical welding method to improve the overall strength of the fixing ring  25  and the frame  1 , thereby improving the reliability of the speaker device  100 . 
     A side of the elastic member  231  close to the frame  1  is attached to a side of the fixing ring  25  away from the diaphragm  21 , and a side of the elastic member  231  away from the frame  1  is connected to the voice coil  22 . A side of the auxiliary diaphragm  232  close to the frame  1  is attached to a side of the fixing ring  25  away from the diaphragm  21 , and a side of the auxiliary diaphragm  232  away from the frame  1  is connected to the voice coil  22 . With this structure, the side of the elastic member away from the frame and the side of the auxiliary diaphragm away from the frame are spaced apart from each other. A side of the elastic member  231  close to the frame  1  and a side of the auxiliary diaphragm  232  close to the frame  1  are attached to two opposite sides of the fixing ring  25 , respectively. A side of the elastic member  231  away from the frame  1  and a side of the auxiliary diaphragm  232  away from the frame  1  are spaced apart from each other and are connected to the voice coil  22 . In other words, the fixing ring  25  is sandwiched between an outer side of the elastic member  231  and an outer side of the auxiliary diaphragm  232 . A side of the holder  24  away from the magnetic circuit unit  3  is sandwiched between an inner side of the elastic member  231  and an inner side of the auxiliary diaphragm  232 . 
     Specifically, one side of the elastic member  231  is fixed to a side of the fixing ring body  251  close to the diaphragm  21 , and another side of the elastic member  231  is fixed to the holder  24  and is spaced apart from the auxiliary diaphragm  232 . The first auxiliary diaphragm fixing portion  2322  is fixed to an end of the holder  24  away from the diaphragm  21 , and the first auxiliary diaphragm extension portion  2323  is attached and fixed to a side of the holder  24  close to the frame  1 . The second auxiliary diaphragm fixing portion  2324  is fixed to a side of the fixing ring fixing portion  252  away from the diaphragm  21 . An inner side of the second auxiliary diaphragm extension portion  2325  is attached and fixed to an outer side of the fixing ring fixing portion  252 . A side of the second auxiliary diaphragm extension portion  2325  close to the diaphragm  21  abuts against and is fixed to a side of the fixing ring body  251  away from the diaphragm  21 . The suspension supporting portions  2133  are fixed to a side of the elastic member  231  away from the fixing ring  25 . The fixing ring  25  fixes the elastic member  231  and the auxiliary diaphragm  232  into an integral structure. With this structure, the elastic support assembly  23  of the speaker device  100  reduces a lateral vibration amplitude of the voice coil  22  so as to enhance the stability of the vibration unit  2  to deal with the dropping of the speaker device  100 ; and the elastic member  231  also serves to provide an electrical signal for a lead wire of the voice coil  22  so as to avoid the use of a lead wire structure to introduce the electrical signal to the voice coil  22 , thereby reducing a lateral vibration amplitude of the voice coil  22 , and due to being spaced apart from the auxiliary diaphragm  232 , a risk of wire breakage is avoided, and the reliability of the speaker device  100  is improved. In addition, as the elastic member  231  and the auxiliary diaphragm  232  are not in direct contact, when the speaker device  100  is energized, the heat generated by the current passing through the elastic member  231  will not be directly conducted to the auxiliary diaphragm  232 , so that the auxiliary diaphragm  232  will not be thermally deformed, thereby maintaining the vibration consistency of the auxiliary diaphragm  232 , and thus improving the reliability of the speaker device  100 . 
     One end of the holder  24  extends into the magnetic gap  30  and is fixed to and connected to the voice coil  22 , and anther end of the holder  24  extends toward the elastic support assembly  23  and is fixed to and connected to the elastic support assembly  23 . Specifically, the holder  24  includes a ring-shaped holder body  241 , a first holder fixing portion  242  bending and extending from an inner peripheral side of the holder body  241  toward the voice coil  22 , and a second holder fixing portion  243  bending and extending from an outer peripheral side of the holder body  241  toward the elastic support assembly  23 . 
     The holder body  241  is fixed to the suspension body  211 . Specifically, the holder body  241  is fixed to a side of the vibrating portion  2113  close to the magnetic circuit unit  3 . The first holder fixing portion  242  is fixed to and connected to the voice coil  22 . 
     The first auxiliary diaphragm fixing portion  2322  is fixed to the second holder fixing portion  243 , and the first auxiliary diaphragm extension portion  2323  is fixed to a side of the second holder fixing portion  243  close to the frame  1 . 
     In this implementation, the second holder fixing portion  243  is provided with a holder hole  240  penetrating the second holder fixing portion  243 . The second fixing arm  2312  passes through the holder hole  240  to be fixed to the second holder fixing portion  243 . With this structure, the height of the elastic member  231  fixed to the holder  24  is adjustable, such that the elastic member  231  maintains a distance from the auxiliary diaphragm  232 , thereby improving the reliability of the speaker device  100 . 
     Along a vibrating direction of the diaphragm  21 , one end of the holder  24  is fixed to the diaphragm  21 , and another end of the holder  24  is fixed to the elastic support assembly  23 . 
     The magnetic circuit unit  3  includes a yoke  31  fixed to the bottom wall  11 , a main magnet  32  fixed to the yoke  31 , and an auxiliary magnet  33  surrounding the main magnet  32  and spaced apart from the main magnet to form a magnetic gap  30 . 
     Compared with the related art, in the present disclosure, the frame is made of a metal material, the fixing ring is a metal ring, and the fixing ring is fixed to the side wall by welding and thus fixes the elastic support assembly to the frame. With this simple structure, the elastic support assembly and the fixing ring can easily be fixed to the frame. There is no need to separately design a structural support feature on the fixing ring or the frame to add a part or process step, which simplifies the assembly process of the speaker device. In addition, the elastic support assembly, the fixing ring and the frame of the speaker device form a firm overall structure. This structure enhances the stability of the vibration unit to deal with the dropping of the speaker device, thereby improving the overall strength and reliability of the speaker device. 
     The above described are merely implementations of the present disclosure. It should be noted here that those of ordinary skill in the art may make improvements without departing from the concept of the present disclosure, but such improvements should fall within the protection scope of the present disclosure.