Loudspeaker and electronic equipment

Abstract

The invention discloses a loudspeaker and electronic equipment. The loudspeaker comprises a shell and an inner core, the shell comprises a bottom shell, the bottom shell is provided with a containing cavity, the containing cavity comprises a cavity bottom wall and a cavity side wall surrounding the cavity bottom wall, the cavity bottom wall comprises a first surface and a second surface opposite to the first surface, the cavity bottom wall is provided with a sinking groove and a through groove, and the sinking groove is formed by concaving from the first surface to the second surface; the sinking groove comprises a groove bottom wall and a groove peripheral wall surrounding the groove bottom wall, a through groove is formed in the groove bottom wall, the through groove penetrates through the groove bottom wall, and the through groove and the groove peripheral wall are spaced; the inner core comprises a basin frame and a vibrating diaphragm, the vibrating diaphragm is connected with the basin frame, the basin frame is contained in the sinking groove, the basin frame is borne on the groove bottom wall, the vibrating diaphragm is exposed out of the through groove, and the inner core is limited in the direction perpendicular to the height direction of the loudspeaker and the circumferential wall of the groove. The volume of the loudspeaker can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a speaker and electronic equipment. Background Art

[0002] Speakers are used to convert music, voice, and audio signals into sound, and can support external audio playback. Therefore, they are increasingly used in electronic devices such as mobile phones, tablets, and laptops. Conventional technology uses plastic brackets to secure the speaker core. However, these brackets take up a lot of space, which in turn makes the speaker bulky. The large space occupied by speakers within electronic devices hinders the slimming and lightening of these devices. Summary of the Invention

[0003] The present application provides a speaker and an electronic device, which can eliminate the need for a plastic bracket in the speaker, thereby reducing the volume of the speaker.

[0004] According to a first aspect of the present application, a speaker is provided for use in an electronic device. The speaker comprises a housing and a core. The housing comprises a bottom shell, the bottom shell having an accommodating cavity, the accommodating cavity comprising a cavity bottom wall and cavity side walls surrounding the cavity bottom wall, the cavity bottom wall comprising a first surface and a second surface disposed opposite to the first surface, the cavity bottom wall being provided with a recessed groove, the recessed groove being formed by recessing from the first surface toward the second surface, the recessed groove comprising a groove bottom wall and a groove peripheral wall surrounding the groove bottom wall, the groove bottom wall being provided with a through groove, the through groove penetrating the groove bottom wall, and the through groove being spaced apart from the groove peripheral wall;

[0005] The core includes a basin and a diaphragm, the diaphragm is connected to the basin, the basin is accommodated in the sink, and the basin is supported by the bottom wall of the groove. The diaphragm is exposed in the through groove, and the groove peripheral wall limits the core along the direction perpendicular to the height of the speaker.

[0006] The inner core may be limited by the peripheral wall of the sinking groove itself or by other structures provided on the peripheral wall.

[0007] It is understood that, compared to prior art speakers that rely on plastic brackets to support and position the core, this application eliminates the plastic bracket in the speaker. The core is directly supported in a recessed groove in the speaker housing, with the recessed groove walls confining the core within the groove. This reduces the overall size of the housing, and thus the speaker. Furthermore, the elimination of the plastic bracket can also reduce the production cost of the speaker. Eliminating the plastic bracket also allows for greater rear space within a limited space, improving the speaker's low-frequency performance and increasing sound loudness.

[0008] In one possible embodiment, a sound guide groove is provided on the bottom wall of the accommodating cavity. The sound guide groove is formed by being concavely provided from the second surface toward the first surface, and a sound guide protrusion is convexly provided on the first surface. The sound guide groove is connected to the through groove.

[0009] The groove peripheral wall is provided with a plurality of limiting portions, the plurality of limiting portions are protrudingly provided on the groove peripheral wall, and the plurality of limiting portions are arranged around the through groove;

[0010] Along the width and length directions of the speaker, the plurality of limiting portions and the sound guide protrusions are in contact with the peripheral side surface of the basin frame.

[0011] The limiting portion may be a limiting protrusion or a spring.

[0012] There may also be a certain gap between the multiple limiting parts and the peripheral side surface of the basin frame, and the gap is within the assembly tolerance range, so that the basin frame can be installed in the sink. The gap between the multiple limiting parts and the peripheral side surface of the basin frame does not affect the positioning of the basin frame by the multiple limiting parts. There may also be a certain gap between the sound guide protrusion and the peripheral side surface of the basin frame, and the gap is within the assembly tolerance range, so that the basin frame can be installed in the sink. The gap between the sound guide protrusion and the peripheral side surface of the basin frame does not affect the positioning of the basin frame by the sound guide protrusion.

[0013] It can be understood that a sound guide protrusion and multiple limiting parts are provided in the present application, the sound guide protrusion is connected to the peripheral wall of the groove, and the multiple limiting parts are protruded from the wall surface of the peripheral wall of the groove. Along the length direction of the speaker, a part of the limiting parts are located at the opposite ends of the core; along the width direction of the speaker, the sound guide protrusion and another part of the limiting parts are located on the opposite sides of the core, and the sound guide protrusion and multiple limiting parts are in contact with the peripheral side surface of the basin frame of the core. Therefore, the sound guide protrusion and multiple limiting parts can further limit the basin frame of the core from the length direction and width direction of the speaker, thereby avoiding the core from shaking in the speaker and improving the overall stability of the core in the speaker.

[0014] In a possible implementation manner, each of the limiting portions is formed by stamping at a connection between the groove peripheral wall and the groove bottom wall.

[0015] It can be understood that the plurality of limiting portions are directly formed by stamping the connection between the peripheral wall and the bottom wall of the sink, and the forming process of the plurality of limiting portions is simple and the forming efficiency is high.

[0016] In one possible embodiment, the housing further includes a top plate, the top plate having a third surface and a fourth surface disposed opposite to the third surface, the top plate being provided with a connecting groove, the connecting groove being formed by the fourth surface being recessed toward the third surface, the connecting groove having a connecting groove bottom wall;

[0017] The top plate covers the accommodating cavity. Along the height direction of the speaker, the orthographic projection of the bottom wall of the connecting groove on the basin frame is located inside the basin frame, and the bottom wall of the connecting groove is connected to the surface of the basin frame facing the top plate.

[0018] It is understood that by providing the connecting groove on the top plate and forming the connecting groove concavely from the fourth surface of the top plate toward the third surface, the provision of the connecting groove shortens the distance between the top plate and the inner core, thereby facilitating connection between the top plate and the inner core. When the top plate and the inner core are welded, the bottom wall of the connecting groove is directly welded to the basin frame of the inner core.

[0019] In a possible implementation manner, the connecting groove further has a connecting groove peripheral wall, and the connecting groove peripheral wall surrounds the connecting groove bottom wall;

[0020] Along the height direction of the speaker, the bottom wall of the connecting groove is spaced apart from the surface of the basin frame facing the top plate, and the bottom wall of the connecting groove is provided with a glue-containing groove, and along the height direction of the speaker, the glue-containing groove passes through the bottom wall of the connecting groove;

[0021] The speaker also includes an adhesive portion, which includes a first adhesive portion and a second adhesive portion. The first adhesive portion is located between the bottom wall of the connecting groove and the surface of the basin facing the top plate, and connects the bottom wall of the connecting groove and the basin. The second adhesive portion is located in the connecting groove. The second adhesive portion is connected to the surface of the first adhesive portion exposed in the glue-containing groove, and covers the connecting groove peripheral wall of the connecting groove.

[0022] It is understandable that when the bottom wall of the connecting groove of the connecting groove is provided with a glue-containing groove, after the adhesive is filled between the bottom wall of the connecting groove of the connecting groove and the basin frame of the core, the adhesive can continue to be filled so that the adhesive further overflows and fills the connecting groove. The adhesive solidifies to form an adhesive portion. The adhesive between the bottom wall of the connecting groove of the connecting groove and the basin frame forms a first adhesive portion after solidification. The adhesive in the connecting groove forms a second adhesive portion after solidification. The adhesive portion connects the bottom wall of the connecting groove of the connecting groove and the basin frame, and the adhesive portion is also connected to the peripheral wall of the connecting groove of the connecting groove. Thus, the contact area between the adhesive portion and the top plate is increased, thereby increasing the bonding force between the top plate and the core, and improving the installation stability of the core.

[0023] In a possible implementation, the adhesive portion further includes a third adhesive portion, which is connected to the side of the second adhesive portion facing away from the first adhesive portion along the height direction of the speaker, and the third adhesive portion is connected to the fourth surface of the top plate.

[0024] It is understood that when the adhesive fills the connection groove and overflows onto the fourth surface of the top plate, the adhesive that overflows the connection groove solidifies to form a third adhesive portion. This third adhesive portion, in addition to the first and second adhesive portions, can contact the fourth surface of the top plate, further increasing the contact area between the adhesive and the top plate, thereby strengthening the bonding strength between the top plate and the core and improving the core's installation stability.

[0025] In one possible embodiment, the speaker further includes a conducting plate and a reinforcement, wherein the conducting plate is partially accommodated in the accommodating cavity, the conducting plate is electrically connected to the inner core, the reinforcement is accommodated in the accommodating cavity, the reinforcement is arranged on the bottom wall of the accommodating cavity and is spaced apart from the sink, and the reinforcement supports part of the conducting plate.

[0026] It's understood that by providing a reinforcement between the conductive plate and the base plate, the reinforcement supports the plate, improving the stability of the electrical connection between the core and the plate, and preventing the plate from swaying along the height of the speaker, which could affect the stability of the electrical connection between the core and the plate. If the conductive plate is an FPC, the reinforcement supports the plate, preventing it from bending and thus affecting the stability of the electrical connection between the core and the circuit board. If the conductive plate is a rigid circuit board, the reinforcement also supports the plate, preventing it from fracturing if the speaker is dropped.

[0027] In a possible embodiment, the top plate is provided with a pressure plate, and the pressure plate is protruded from the third surface of the top plate;

[0028] The side wall of the accommodating cavity is provided with a transition opening, the transition opening is communicated with the accommodating cavity, and the transition opening has two transition side walls arranged opposite to each other and a transition bottom wall connected between the two transition side walls;

[0029] The guide plate has two card interfaces, the guide plate extends out of the accommodating cavity through the transition port, the guide plate abuts against the transition bottom wall of the transition port, the two card interfaces are respectively clamped on the two transition side walls, the pressing plate is accommodated in the transition port and presses against the guide plate.

[0030] It is understood that the contact plate's abutment against the core and the transition bottom wall of the transition opening allows the contact plate to maintain balance under the support of the core, reinforcement, and transition bottom wall, further improving the contact plate's installation stability. The contact plate's two snap-fitting interfaces are respectively engaged with the two transition side walls of the transition opening, while the top plate's pressure plate abuts against the contact plate, further enhancing the contact plate's installation stability and preventing the contact plate from rocking at the transition opening, which could affect the electrical connection stability between the core and the circuit board.

[0031] In a possible implementation, the sound guide groove has a sound guide groove bottom wall, and along the height direction of the speaker, the sound guide groove bottom wall is away from the groove bottom wall and inclined toward the cavity side wall of the accommodating cavity.

[0032] It can be understood that the bottom wall of the sound guide groove is set at an angle, which allows the sound waves generated by the vibration of the diaphragm to be directly transmitted along the sound guide groove to the sound outlet, shortening the transmission path of the sound waves. Therefore, it is beneficial for the sound waves to be transmitted to the sound outlet through the sound guide groove.

[0033] In a possible implementation manner, the bottom wall of the accommodating cavity, the side walls of the accommodating cavity, and the inner core form a rear cavity.

[0034] It can be understood that the elimination of the plastic bracket in the present application can avoid the plastic bracket occupying the back cavity space, thereby making the speaker have a larger back cavity space, improving the low-frequency performance of the speaker, and increasing the sound loudness.

[0035] A second aspect of the present application provides an electronic device, comprising a middle frame, a rear housing, a fixing portion, and the speaker described above, wherein the middle frame comprises a frame and a middle plate, the frame being provided with a sound outlet, the rear housing, the frame, and the middle plate forming a storage space, and the sound outlet communicating with the storage space;

[0036] A sound guide groove is provided on the bottom wall of the accommodating cavity. The sound guide groove is formed by the second surface being recessed toward the first surface. The notch of the sound guide groove is located on the side wall of the accommodating cavity.

[0037] The speaker is located in the accommodating space, and the bottom wall of the accommodating cavity is connected to the middle plate through the fixing part. The fixing part is arranged around the core. Along the thickness direction of the electronic device, the core and the middle plate are spaced apart, and the notch of the sound guide groove faces the sound outlet.

[0038] It is understandable that the electronic device provided in the second aspect of the present application uses the speaker provided in the first aspect of the present application. Since the plastic bracket is eliminated in the speaker, the core is directly supported in the sink of the speaker shell, which can reduce the overall size of the shell, and then reduce the overall size of the speaker, thus facilitating the thinning and lightening of the electronic device. In addition, the elimination of the plastic bracket can also reduce the production cost of the speaker, and then reduce the production cost of the electronic device. The elimination of the plastic bracket can also reserve more space for the back cavity within a limited space, thereby improving the low-frequency performance of the speaker, increasing the loudness of the sound, and thus improving the sound performance of the electronic device.

[0039] In a possible implementation manner, the fixing portion, the inner core, and the middle plate form a front cavity, and the front cavity is connected to the sound guide groove.

[0040] It can be understood that compared with the closed front cavity used in the prior art, the present application uses an open front cavity, and the fixing part, the core and the middle plate together form the front cavity, which can further reduce the thickness of the speaker shell and is more conducive to the lightweight and thinning of electronic equipment.

[0041] The beneficial effects of this application are as follows: The plastic bracket is eliminated from the speaker, and the core is directly supported in the recessed groove of the speaker housing. The recessed groove walls confine the core within the recessed groove, thereby reducing the overall size of the housing and, consequently, the overall size of the speaker. Furthermore, the elimination of the plastic bracket can also reduce the production cost of the speaker. This also allows for greater rear space within a limited space, improving the speaker's low-frequency performance and increasing sound loudness. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the implementation. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained like these drawings without any creative work.

[0043] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0044] Figure 2 for Figure 1 a schematic diagram of the exploded structure of the electronic device shown;

[0045] Figure 3 for Figure 1 A schematic structural diagram of a speaker of the electronic device shown;

[0046] Figure 4 for Figure 3 A schematic diagram of the exploded structure of the loudspeaker at a first angle;

[0047] Figure 5 for Figure 3 A schematic diagram of the exploded structure of the loudspeaker at a second angle;

[0048] Figure 6 for Figure 3 A schematic structural diagram of a bottom shell of the speaker at a first angle;

[0049] Figure 7 for Figure 6 A schematic structural diagram of the bottom shell at a second angle;

[0050] Figure 8 for Figure 3 A schematic structural diagram of the electrical connection board of the loudspeaker shown;

[0051] Figure 9 for Figure 3 A schematic diagram of a portion of the structure of the loudspeaker from a first angle;

[0052] Figure 10 for Figure 9 A schematic diagram of a portion of the structure of the loudspeaker from a second angle;

[0053] Figure 11 for Figure 3 A schematic diagram of the cross-sectional structure of the loudspeaker shown;

[0054] Figure 12 for Figure 3 A partial cross-sectional structural diagram of the speaker and middle frame assembly is shown. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0056] Please refer to Figure 1 and Figure 2 , Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application; Figure 2 for Figure 1 Schematic diagram of the exploded structure of the electronic device shown.

[0057] The electronic device 1000 may be a mobile phone, tablet computer, walkman or other electronic device with a broadcasting function or a wearable device. The embodiment of the present application is described by taking the electronic device 1000 as a mobile phone as an example.

[0058] The electronic device 1000 provided in the embodiment of the present application includes a housing 400, a display screen 300, a circuit board 200 and a speaker 100. The display screen 300 is mounted in the housing 400, and the circuit board 200 and the speaker 100 are accommodated in the housing 400.

[0059] The circuit board 200 is used to arrange electronic components and realize electrical connections between the electronic components. The circuit board 200 can be a rigid circuit board, a flexible circuit board, or a rigid-flexible circuit board. This embodiment of the present application does not impose strict restrictions on this.

[0060] The housing 400 includes a middle frame 410 and a rear housing 420. The middle frame 410 includes a frame 411 and a middle plate 412. The frame 411 is provided with a sound outlet 4111, which extends through two oppositely facing surfaces of the frame 411 along its thickness. At least part of the edge of the middle plate 412 is connected to the frame 411.

[0061] In this embodiment, the display screen 300 and rear housing 420 are mounted on opposite sides of the middle frame 410 along the thickness of the electronic device 1000. The rear housing 420 can be secured to the middle frame 410 using adhesive. The rear housing 420, the bezel 411, and the middle plate 412 form a storage space. The sound outlet 4111 communicates with the storage space. The circuit board 200 and speaker 100 are located within the storage space. The circuit board 200 and speaker 100 are supported by the middle frame 410.

[0062] Please refer to Figure 3 、 Figure 4 and Figure 5 , Figure 3 for Figure 1 A schematic structural diagram of a speaker of the electronic device shown; Figure 4 for Figure 3 A schematic diagram of the exploded structure of the loudspeaker at a first angle; Figure 5 for Figure 3 A schematic diagram of the exploded structure of the loudspeaker at a second angle is shown.

[0063] Speaker 100 includes a housing 10, a core 20, a conductive plate 30, and multiple connectors 40. Housing 10 includes a bottom housing 11 and a top plate 12. Bottom housing 11 defines a housing cavity 13, which is covered by top plate 12. Core 20 is housed in cavity 13. A portion of conductive plate 30 is housed in cavity 13, while the remaining portion is exposed outside of housing 10. Core 20 is electrically connected to circuit board 200 via conductive plate 30. Multiple connectors 40 are used to connect speaker 100 to middle frame 410.

[0064] For ease of description, define Figure 3 The length direction of the speaker 100 is the X-axis direction, the width direction of the speaker 100 is the Y-axis direction, and the height direction of the speaker 100 is the Z-axis direction. The X-axis direction, the Y-axis direction, and the Z-axis direction are perpendicular to each other.

[0065] Please refer to Figure 6 and Figure 7 , Figure 6 for Figure 3 A schematic structural diagram of a first angle of the bottom shell of the loudspeaker shown, Figure 7 for Figure 6 A schematic structural diagram of the bottom shell at a second angle is shown.

[0066] The bottom housing 11 includes a bottom plate 111 and side plates 112. The side plates 112 are connected to the bottom plate 111 and, together with the bottom plate 111, form a receiving cavity 13. In this embodiment, the bottom plate 111 and the side plates 112 are integrally formed components. In other embodiments, the bottom plate 111 and the side plates 112 may be separate components. The bottom plate 111 includes a first surface 1111 and a second surface 1112. The first surface 1111 and the second surface 1112 are arranged in opposite directions along the thickness direction of the bottom plate 111.

[0067] The side panel 112 is arranged around the edge of the bottom panel 111. The side panel 112 is protruded from the first surface 1111 of the bottom panel 111 and extends away from the first surface 1111. There is an angle between the side panel 112 and the first surface 1111. It can be understood that the bottom panel 111 is connected to one side of the side panel 112 along the thickness direction. It can be understood that the bottom panel 111 forms the bottom wall of the accommodating cavity 13, and the first surface 1111 is the bottom wall surface of the accommodating cavity 13. The side panel 112 forms the side wall of the accommodating cavity 13. A plurality of recesses are provided around the accommodating cavity 13. The plurality of recesses are used to accommodate the connecting portion 40. In this embodiment, the number of recesses is three. In other embodiments, the number of recesses may be other numbers, and this application does not impose any specific restrictions on this.

[0068] The bottom shell 11 is provided with a sink 113. Along the thickness direction of the bottom plate 111, the sink 113 is formed by the first surface 1111 being recessed toward the second surface 1112. The sink 113 has a circumferential wall 1131 and a bottom wall 1133. The circumferential wall 1131 is arranged around the edge of the bottom wall 1133 of the sink 113 and is connected to the edge of the bottom wall 1133. Along the thickness direction of the bottom wall 1133, the bottom wall 1133 includes a first wall surface 1134 and a second wall surface 1135 arranged opposite to the first wall surface 1134. The circumferential wall 1131 protrudes from the first wall surface 1134. In this embodiment, the sink 113 is rectangular. The sink 113 is formed by a stamping process. The circumferential wall 1131 is bent toward the interior of the sink 113.

[0069] In other embodiments, the trough 113 may have other shapes, such as a trapezoid or a pentagon. The trough 113 may be formed using other processes. The trough peripheral wall 1131 may also be perpendicular to the trough bottom wall 1133 of the trough 113 (with certain process tolerances permitted). This is not specifically limited in the present embodiment.

[0070] The bottom wall 1133 of the trough 113 is provided with a through groove 114. The through groove 114 penetrates the bottom wall 1133 of the trough 113 along the thickness direction of the bottom plate 111. The orthographic projection of the through groove 114 on the first surface 1111 of the bottom plate 111 is located within the orthographic projection of the bottom wall 1133 of the trough 113 on the first surface 1111. The through groove 114 is spaced apart from the peripheral wall 1131 of the trough 113. In essence, the area of ​​the through groove 114 is smaller than the area of ​​the bottom wall 1133 of the trough 113, and there is a margin between the four sides of the through groove 114 and the peripheral wall 1131 of the trough 113. In this embodiment, the shape of the through groove 114 is the same as that of the trough 113. In other embodiments, the shape of the through groove 114 may also be different from that of the trough 113.

[0071] The groove peripheral wall 1131 of the sink 113 is provided with a plurality of limiting portions 115. Each limiting portion 115 is protruded from the groove peripheral wall 1131 of the sink 113. The plurality of limiting portions 115 are arranged around the through groove 114. In this embodiment, each limiting portion 115 is a limiting protrusion. Each limiting portion 115 is directly stamped and formed at the connection between the groove peripheral wall 1131 and the groove bottom wall 1133 of the sink 113. When each limiting portion 115 is formed, a notch 1151 is formed on the side of the limiting portion 115 facing the through groove 114, and the notch 1151 is connected to the through groove 114. There are six limiting portions 115. Along the length direction (X-axis direction) of the speaker 100, the four limiting portions 115 are distributed in pairs at opposite ends of the through groove 114. Along the width direction (Y-axis direction) of the speaker 100, the two limiting portions 115 are distributed on the same side of the through groove 114. In other embodiments, each limiting portion 115 may also be formed by other processes. Each limiting portion 115 may also be a spring.

[0072] The bottom shell 11 is provided with a sound guide groove 116. The sound guide groove 116 is formed by the second surface 1112 of the bottom plate 111 being concavely provided in the direction of the first surface 1111, and a sound guide protrusion 117 is convexly provided on the first surface 1111. The sound guide groove 116 extends along the length direction of the bottom plate 111. The notch of the sound guide groove 116 is located at the cavity wall of the accommodating cavity 13. The sound guide groove 116 is connected with the sinking groove 113 and the through groove 114. The sound guide groove 116 has a sound guide groove bottom wall 1161. Along the height direction of the speaker 100, the sound guide groove bottom wall 1161 is away from the groove bottom wall 1133 of the sinking groove 113 and is inclined toward the cavity side wall of the accommodating cavity 13. Part of the sound guide groove bottom wall 1161 of the sound guide groove 116 is formed by the connection between the bottom plate 111 and the groove peripheral wall 1131 of the sinking groove 113. It will be appreciated that the sound guide protrusion 117 is connected to the peripheral wall 1131 of the recess 113. The sound guide protrusion 117 is located on one side of the bottom shell 11 in the width direction and is opposite a portion of the retaining portion 115. In this embodiment, the sound guide groove 116 is directly stamped from the bottom plate 111. In other embodiments, the sound guide groove 116 may also be formed using other processes.

[0073] The bottom shell 11 is provided with a transition opening 118. The transition opening 118 extends through the side panel 112. The transition opening 118 comprises a transition bottom wall 1181 and two opposing transition side walls 1182. The transition bottom wall 1181 is connected between the two transition side walls 1182. The transition opening 118 is located at one end of the bottom shell 11 in the longitudinal direction and communicates with the accommodating cavity 13.

[0074] Please continue reading Figure 4 and Figure 5 In this embodiment, the top plate 12 includes a third surface 121 and a fourth surface 122. The third surface 121 and the fourth surface 122 are disposed in opposite directions along the thickness direction of the top plate 12.

[0075] The top plate 12 is provided with a connecting groove 128. The connecting groove 128 is located in the middle of the top plate 12. In this embodiment, the connecting groove 128 is formed by a recessed portion of the fourth surface 122 of the top plate 12 toward the third surface 121, and a connecting protrusion 123 is formed on the third surface 121 of the top plate 12. The connecting groove 128 has a connecting groove bottom wall 1281 and a connecting groove peripheral wall 1282. The connecting groove peripheral wall 1282 is disposed around the connecting groove bottom wall 1281 and is connected to the connecting groove bottom wall 1281.

[0076] The top plate 12 is provided with a filling hole 124 and a receiving groove 125. The filling hole 124 is spaced apart from the connecting groove 128. The filling hole 124 extends through the third and fourth surfaces 121, 122 of the top plate 12 along its thickness. The filling hole 124 is used to fill the receiving cavity 13 with sound-absorbing material. The receiving groove 125 is recessed in the fourth surface 122 of the top plate 12 and surrounds the filling hole 124. The receiving groove 125 is used to receive the first cover plate 50, thereby sealing the filling hole 124. It will be appreciated that the filling hole 124 extends through the bottom wall of the receiving groove 125.

[0077] The top plate 12 is also provided with a sound leakage hole 126. The sound leakage hole 126 is spaced apart from the connecting groove 128. Along the thickness direction of the top plate 12, the sound leakage hole 126 passes through the third surface 121 and the fourth surface 122 of the top plate 12. A second cover plate 60 is provided corresponding to the sound leakage hole 126, and the second cover plate 60 can block the sound leakage hole 126. The top plate 12 is provided with a pressure plate 127. The pressure plate 127 is protruded from the third surface 121 of the top plate 12 and extends away from the third surface 121. There is an angle between the pressure plate 127 and the third surface 121. The pressure plate 127 is located at one end of the length direction of the top plate 12.

[0078] Please refer to Figures 3 to 5Each connecting portion 40 includes a fixing plate 41 and a connecting plate 42. The fixing plate 41 and the connecting plate 42 are connected to each other. The connecting plate 42 is provided with a connecting hole 421. The connecting hole 421 passes through the surface of the connecting plate 42 facing away from the surface in the thickness direction. In this embodiment, the number of connecting portions 40 is three. In other embodiments, the number of connecting portions 40 may also be four, five, or more. This application does not impose any specific restrictions on this.

[0079] Please continue reading Figure 4 and Figure 5 The core 20 includes a frame 21, a diaphragm 22, a driving device (not shown), a positive terminal 23, and a negative terminal 24. The frame 21 forms the supporting skeleton of the core 20. The frame 21 has a peripheral side surface. The frame 21 has an opening. The diaphragm 22 is supported and fixed on the frame 21. The diaphragm 22 covers the opening. The positive terminal 23 and the negative terminal 24 are both connected to the frame 21. The driving device is located inside the frame 21. The driving device is used to drive the diaphragm 22 to vibrate relative to the frame 21. The driving device includes but is not limited to an electric (i.e., dynamic) driving device, an electrostatic (i.e., capacitive) driving device, an electromagnetic (i.e., reed) driving device, or a piezoelectric (i.e., crystal) driving device. In this embodiment, the driving device is a dynamic driving device. The driving device includes a voice coil and a magnetic circuit system. The voice coil cooperates with the magnetic circuit system to drive the diaphragm 22 to vibrate relative to the frame 21.

[0080] Please refer to Figure 8 , Figure 8 for Figure 3 Schematic diagram of the structure of the guide plate of the loudspeaker shown.

[0081] In this embodiment, the conductive plate 30 is an FPC (Flexible Printed Circuit). In other embodiments, the conductive plate 30 may also be a rigid circuit board, or a rigid-flexible circuit board.

[0082] The conductive plate 30 includes a first conductive surface 31 and a second conductive surface 32. The first and second conductive surfaces 31 and 32 are arranged in opposite directions along the thickness of the conductive plate 30. The conductive plate 30 comprises a first section 30a, a second section 30b, and a third section 30c. The first section 30a extends along the width of the conductive plate 30, with conductive electrodes provided at opposite ends of the first section 30a. The second section 30b extends along the length of the conductive plate 30, with one end of the second section 30b connected to one side of the first section 30a along the width. The second section 30b is provided with two card interfaces 33. The two card interfaces 33 are located at the ends of the second section 30b facing away from the first section 30a. The two card interfaces 33 are recessed into two oppositely facing surfaces of the second section 30b along the width and extend through the two oppositely facing surfaces of the second section 30b along the thickness. The third section 30c is connected to the other end of the second section 30b. The third section 30c is provided with a positive electrode connection terminal 34 and a negative electrode connection terminal 35. It can be understood that the guide plate 30 is provided with two card interfaces 33 , which are respectively recessed on the surfaces of the guide plate 30 facing away from each other along the width direction, and both penetrate the two surfaces of the guide plate 30 facing away from each other along the thickness direction.

[0083] It should be noted that the two conductive electrodes of the first section 30a are electrically connected to the positive electrode connection terminal 34 and the negative electrode connection terminal 35 of the third section 30c respectively.

[0084] In this embodiment, the speaker 100 further includes a reinforcement 80. The reinforcement 80 is a plate. The reinforcement 80 is used to support the conductive plate 30. It should be noted that the reinforcement 80 can be made of an elastic material such as foam, or a rigid material. The reinforcement 80 can be a separately molded structural member, or it can be directly mounted on the bottom plate 111 of the bottom housing 11 or the conductive plate 30.

[0085] Please refer to Figure 9 、 Figure 10 and Figure 11 , Figure 9 for Figure 3 A schematic diagram of a portion of the structure of the loudspeaker from a first angle; Figure 10 for Figure 9 A schematic diagram of a portion of the structure of the loudspeaker from a second angle; Figure 11 for Figure 3 Schematic diagram of the cross-sectional structure of the loudspeaker shown.

[0086] In this embodiment, the core 20 is accommodated in the shell 10 of the loudspeaker 100. Specifically, the core 20 is located in the accommodating cavity 13 of the shell 10. The basin frame 21 of the core 20 is supported by the bottom wall 1133 of the groove 113. The diaphragm 22 of the core 20 is exposed through the through groove 114. The groove peripheral wall 1131 of the groove 113 limits the basin frame 21 of the core 20. Along the width direction (Y-axis direction) of the loudspeaker 100, the sound guide protrusion 117 is located on one side of the basin frame 21. A plurality of limiting portions 115 are located on the peripheral side of the basin frame 21. A plurality of limiting portions 115 and the sound guide protrusion 117 contact the peripheral side surface of the basin frame 21. Specifically, along the length direction (X-axis direction) of the loudspeaker 100, the core 20 has two limiting portions 115 at both opposite ends. Four stoppers 115 located at opposite ends of the core 20 along the length (X-axis) of the speaker 100 limit the core 20, preventing it from moving along the length (X-axis) of the speaker 100. Two stoppers 115 are located on the side of the core 20 facing away from the sound guide protrusion 117 along the width (Y-axis) of the speaker 100. Along the width (Y-axis) of the speaker 100, the two stoppers 115 on one side of the core 20 and the sound guide protrusion 117 on the other side of the core 20 limit the core 20, preventing it from moving along the width (Y-axis) of the speaker 100.

[0087] It should be noted that there may also be a certain gap between the multiple limiting portions 115 and the peripheral side surfaces of the basin frame 21, and the gap is within the assembly tolerance range, so that the basin frame 21 can be installed into the sink 113. The gap between the multiple limiting portions 115 and the peripheral side surfaces of the basin frame 21 does not affect the positioning of the basin frame 21 by the multiple limiting portions 115. There may also be a certain gap between the sound guide protrusion 117 and the peripheral side surfaces of the basin frame 21, and the gap is within the assembly tolerance range, so that the basin frame 21 can be installed into the sink 113. The gap between the sound guide protrusion 117 and the peripheral side surfaces of the basin frame 21 does not affect the positioning of the basin frame 21 by the sound guide protrusion 117.

[0088] In this embodiment, the core 20 is bonded to the bottom plate 111. Specifically, the frame 21 of the core 20 is bonded to the peripheral wall 1131 and the bottom wall 1133 of the sink 113.

[0089] A portion of the conductive plate 30 is housed within the housing 13 of the speaker 100's housing 10, while the remaining portion is exposed outside the housing 10. The reinforcement 80 is housed within the housing 13 of the speaker 100's housing 10. The conductive plate 30 is mounted between the core 20, the reinforcement 80, and the transition bottom wall 1181 of the transition opening 118. The conductive plate 30 is electrically connected to the core 20. The two snap-in connectors 33 of the conductive plate 30 are respectively snap-fitted to the two transition side walls 1182 of the transition opening 118. Specifically, the first section 30a and the second section 30b of the conductive plate 30 are located within the housing 13. The first section 30a is mounted on the core 20. The conductive electrodes at opposite ends of the first section 30a are electrically connected to the positive terminal 23 and the negative terminal 24 of the core 20, respectively. The second section 30b is connected to the bottom plate 111 via the reinforcement 80. The end of the second section 30b, facing away from the first section 30a, extends through the transition opening 118 and out of the accommodating cavity 13 of the housing 10. The second section 30b abuts against the transition bottom wall 1181 of the transition opening 118. The two engaging interfaces 33 of the second section 30b are respectively engaged with the two transition side walls 1182 of the transition opening 118. The third section 30c is located outside the housing 10 of the speaker 100.

[0090] In this embodiment, along the height direction (Z-axis) of the housing 10, the top plate 12 is connected to the side of the side plate 112 facing away from the bottom plate 111. The top plate 12 covers the accommodating cavity 13. Along the height direction (Z-axis) of the housing 10, the bottom wall 1281 of the connecting groove 128 of the top plate 12 is connected to the surface of the frame 21 facing the top plate 12. The filling hole 124 and the sound vent 126 of the top plate 12 are both connected to the accommodating cavity 13. The pressure plate 127 of the top plate 12 is accommodated in the transition opening 118. Along the height direction (Z-axis) of the housing 10, the pressure plate 127 of the top plate 12 abuts the second section 30b of the guide plate 30. The bottom wall and side walls of the accommodating cavity 13, together with the inner core 20, form a rear cavity. In this embodiment, the inner core 20 is welded to the top plate 12. Specifically, the frame 21 is welded to the bottom wall 1281 of the connecting groove 128. The welding connection method includes but is not limited to laser welding, etc. In other embodiments, the basin frame 21 and the connection groove bottom wall 1281 of the connection groove 128 can also be bonded.

[0091] In one possible embodiment, the bottom wall 1281 of the connecting groove is spaced apart from the basin frame 21 along the height direction of the speaker 100 (Z-axis direction). The bottom wall 1281 of the connecting groove is provided with a glue-receiving groove (not shown), which extends through the bottom wall 1281 of the connecting groove along the thickness direction of the top plate 12. The basin frame 21 and the top plate 12 are bonded together by an adhesive portion. The adhesive portion is formed after the adhesive is cured. The adhesive portion includes a first adhesive portion and a second adhesive portion. The first adhesive portion is located between the bottom wall 1281 of the connecting groove and the surface of the basin frame 21 facing the top plate 12, and connects the bottom wall 1281 of the connecting groove and the basin frame 21. The second adhesive portion is located in the connecting groove 128. The second adhesive portion is connected to the surface of the first adhesive portion exposed in the glue-receiving groove and covers the connecting groove peripheral wall 1282 of the connecting groove 128. It can be understood that, along the height direction of the speaker 100 (Z-axis direction), the first adhesive portion fills the gap between the glue-receiving groove and the basin frame 21. The adhesive portion may further include a third adhesive portion connected to a side of the second adhesive portion facing away from the first adhesive portion along the height direction of the housing 10 , and the third adhesive portion is connected to the fourth surface 122 of the top plate 12 .

[0092] It should be noted that the surface of the third adhesive portion facing away from the fourth surface 122 of the top plate 12 is not adhesive.

[0093] It is understandable that, compared to the prior art speaker 100 that uses a plastic bracket to support and limit the core 20, the present application eliminates the plastic bracket in the speaker 100, and the core 20 is directly supported in the groove 113 of the housing 10 of the speaker 100. The groove wall 1131 of the groove 113 limits the core 20 in the groove 113, thereby reducing the overall size of the housing 10, and further reducing the overall size of the speaker 100, which is conducive to the thinness of the electronic device 1000. In addition, the elimination of the plastic bracket can also reduce the production cost of the speaker 100. The elimination of the plastic bracket can also reserve more space for the back cavity within a limited space, thereby improving the low-frequency performance of the speaker 100 and increasing the loudness of the sound.

[0094] In this embodiment, the core 20 is placed on the bottom wall 1133 of the groove 113. The peripheral wall 1131 of the groove 113 can restrain the core 20 within the groove 113. The groove 113 is formed by a stamping process. The peripheral wall 1131 of the groove 113 is an arc-shaped groove wall that curves toward the interior of the groove 113. Therefore, there is a gap between the core 20 and the peripheral wall 1131 of the groove 113. In this application, a sound guide protrusion 117 and multiple stoppers 115 are provided. The sound guide protrusion 117 is connected to the peripheral wall 1131 of the groove 113, and the multiple stoppers 115 are protruding from the peripheral wall 1131. Along the length direction (X-axis direction) of the speaker 100, a portion of the limiting portions 115 are located at opposite ends of the core 20; along the width direction (Y-axis direction) of the speaker 100, the sound guide protrusion 117 and another portion of the limiting portions 115 are located on opposite sides of the core 20, and each limiting portion 115 is closer to the core 20 than the groove wall 1131 of the groove 113. Therefore, the sound guide protrusion 117 and multiple limiting portions 115 can further limit the basin frame 21 of the core 20 from the length direction and width direction of the speaker 100, thereby preventing the core 20 from shaking in the groove 113 and improving the stability of the core 20 in the speaker 100.

[0095] By providing the connection groove 128 on the top plate 12 and recessing the connection groove 128 from the fourth surface 122 of the top plate 12 toward the third surface 121, the provision of the connection groove 128 shortens the distance between the top plate 12 and the core 20, thereby facilitating the connection between the top plate 12 and the core 20. When the top plate 12 and the core 20 are welded, the bottom wall 1281 of the connection groove 128 is directly welded to the basin frame 21 of the core 20.

[0096] When the top plate 12 is bonded to the core 20, adhesive is applied between the bottom wall 1281 of the connecting groove 128 and the frame 21 of the core 20, and the adhesive is allowed to solidify to form a bonding portion. If the bottom wall 1281 of the connecting groove 128 is provided with a glue-receiving groove, after the adhesive is filled between the bottom wall 1281 of the connecting groove 128 and the frame 21 of the core 20, more adhesive can be added, allowing the adhesive to further overflow and fill the connecting groove 128. The adhesive solidifies to form a bonding portion. After the adhesive between the bottom wall 1281 of the connecting groove 128 and the frame 21 solidifies, a first bonding portion is formed. After the adhesive in the connecting groove 128 solidifies, a second bonding portion is formed. The bonding portion connects the bottom wall 1281 of the connecting groove 128 to the frame 21 and is also connected to the peripheral wall 1282 of the connecting groove 128. Therefore, the contact area between the adhesive portion and the top plate 12 is increased, thereby increasing the adhesive force between the top plate 12 and the core 20 and improving the installation stability of the core 20 .

[0097] When the adhesive fills and overflows the connection groove 128, it spreads onto the fourth surface 122 of the top plate 12. The adhesive that overflows the connection groove 128 solidifies and forms a third adhesive portion. This third adhesive portion, in addition to the first and second adhesive portions, is able to contact the fourth surface 122 of the top plate 12, further increasing the contact area between the adhesive and the top plate 12. This in turn increases the bonding strength between the top plate 12 and the core 20, improving the installation stability of the core 20.

[0098] By disposing a reinforcement 80 between the conductive plate 30 and the base plate 111, the conductive plate 30 is mounted on the reinforcement 80. The reinforcement 80 supports the conductive plate 30, improving the electrical connection stability between the core 20 and the conductive plate 30 and preventing the conductive plate 30 from swaying along the height of the speaker 100, which could affect the electrical connection stability between the core 20 and the conductive plate 30. If the conductive plate 30 is an FPC, the reinforcement 80 supports the conductive plate 30, preventing it from bending and thus affecting the electrical connection stability between the core 20 and the circuit board 200. If the conductive plate 30 is a rigid circuit board, the reinforcement 80 also supports the conductive plate 30, preventing it from fracturing if the speaker 100 is dropped.

[0099] At the same time, the contact plate 30 abuts against the core 20 and the transition bottom wall 1181 of the transition opening 118, allowing the contact plate 30 to maintain balance under the support of the core 20, the reinforcement 80, and the transition bottom wall 1181, further improving the installation stability of the contact plate 30. The two engaging interfaces 33 of the second section 30b are respectively engaged with the two transition side walls 1182 of the transition opening 118, and the pressure plate 127 of the top plate 12 abuts against the contact plate 30, further enhancing the installation stability of the contact plate 30 and preventing the contact plate 30 from shaking at the transition opening 118, which could affect the electrical connection between the core 20 and the circuit board 200.

[0100] The filling hole 124 is connected to the rear cavity, which can balance the static pressure of the rear cavity. By filling the accommodating cavity 13 with sound-absorbing material, the sound-absorbing material can increase the equivalent space of the rear cavity, which is conducive to improving low-frequency performance and sound loudness, while saving physical space in the rear cavity.

[0101] See also Figure 12 , Figure 12 for Figure 3The diagram shows a partial cross-sectional structure diagram of the speaker and the middle frame assembly. In this embodiment, the speaker 100 is installed in the housing 400 of the electronic device 1000, and the speaker 100 is connected to the middle frame 410. The conductive plate 30 of the speaker 100 is electrically connected to the circuit board 200. Specifically, the bottom plate 111 of the bottom shell 11 of the speaker 100 is connected to the middle plate 412 via a fixing portion 70. The fixing portion 70 is arranged around the speaker 100. The side plates 112 of the bottom shell 11 of the speaker 100 are connected to the frame 411 via the fixing portion 70. Exemplarily, the fixing portion 70 is foam. Along the thickness direction of the electronic device 1000, the diaphragm 22 of the core 20 is spaced apart from the middle plate 412. The notch of the sound guide groove 116 of the speaker 100 faces the sound outlet 4111 of the housing 400. The distance between the sound guide groove 116 and the core 20 is smaller than the distance between the sound guide groove 116 and the sound outlet 4111. As will be appreciated, a front cavity is formed between the fixing portion 70, the core 20, and the mid-plate 412. The sound guide groove 116 communicates with the front cavity. When the driving mechanism of the core 20 drives the diaphragm 22 to vibrate relative to the frame 21, the air within the front cavity is vibrated, generating sound waves.

[0102] In this embodiment, the speaker 100 is further connected to the middle frame 410 via multiple connecting portions 40. Specifically, the connecting pieces 42 of the three connecting portions 40 are located in the three recesses around the accommodating cavity 13, and the connecting pieces 42 of the three connecting portions 40 are all connected to the middle frame 410. The fixing pieces 41 of the three connecting portions 40 are all connected to the middle frame 410 of the speaker 100.

[0103] It is understandable that the electronic device 1000 in the present application uses the above-mentioned speaker 100. Since the plastic bracket is eliminated in the speaker 100, the core 20 is directly carried in the sink 113 of the shell 10 of the speaker 100, which can reduce the overall size of the shell 10, and thus reduce the overall size of the speaker 100, thereby facilitating the thinning and lightness of the electronic device 1000. In addition, the elimination of the plastic bracket can also reduce the production cost of the speaker 100, and thus reduce the production cost of the electronic device 1000. The elimination of the plastic bracket can also reserve more space for the back cavity within a limited space, thereby improving the low-frequency performance of the speaker 100, increasing the loudness of the sound, and thus improving the sound performance of the electronic device 1000.

[0104] Compared with the closed front cavity used in the prior art, the present application uses an open front cavity. The fixing part 70, the core 20 and the middle plate 412 together form the front cavity, which can further reduce the thickness of the shell 10 of the speaker 100, which is more conducive to the lightweight and thinning of the electronic device 1000.

[0105] The sound guide groove 116 is closer to the core 20 than to the sound outlet 4111, preventing external dust from entering the accommodation space through the sound outlet 4111 and clogging the sound guide groove 116, thereby preventing the sound output of the speaker 100 from being affected. Furthermore, along the height direction of the speaker 100, the bottom wall 1161 of the sound guide groove is inclined toward the sink 113, and the bottom wall 1161 of the sound guide groove faces away from the connecting groove 128. This allows the sound waves generated by the vibration of the diaphragm to be transmitted directly along the sound guide groove 116 to the sound outlet 4111, shortening the sound wave transmission path and thus facilitating the transmission of sound waves through the sound guide groove 116 to the sound outlet 4111.

[0106] The connecting pieces of the three connecting parts 40 are respectively located in the three recesses around the accommodating cavity 13 , which can prevent the three connecting parts 40 from occupying extra space in the height direction (Z-axis direction) of the speaker 100 , and is conducive to making the electronic device 1000 lighter and thinner.

[0107] The above is a detailed introduction to the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A speaker for an electronic device, characterized in that: The loudspeaker comprises a shell and a core, wherein the shell comprises a bottom shell, the bottom shell having an accommodating cavity, the accommodating cavity comprising a cavity bottom wall and cavity side walls surrounding the cavity bottom wall, the cavity bottom wall comprising a first surface and a second surface disposed opposite to the first surface, the cavity bottom wall being provided with a recessed groove, the recessed groove being formed by recessing the first surface toward the second surface, the recessed groove comprising a groove bottom wall and a groove peripheral wall surrounding the groove bottom wall, the groove bottom wall being provided with a through groove, the through groove penetrating the groove bottom wall, and the through groove being spaced apart from the groove peripheral wall; The core includes a basin and a diaphragm, the diaphragm is connected to the basin, the basin is accommodated in the sink, and the basin is supported by the bottom wall of the groove. The diaphragm is exposed in the through groove, and the groove peripheral wall limits the core along the direction perpendicular to the height of the speaker.

2. The loudspeaker according to claim 1, wherein A sound guide groove is provided on the bottom wall of the accommodating cavity. The sound guide groove is formed by the second surface being concavely arranged toward the first surface, and a sound guide protrusion is convexly arranged on the first surface. The sound guide groove is connected to the through groove. The groove peripheral wall is provided with a plurality of limiting portions, the plurality of limiting portions are protrudingly provided on the groove peripheral wall, and the plurality of limiting portions are arranged around the through groove; Along the width and length directions of the speaker, the plurality of limiting portions and the sound guide protrusions are in contact with the peripheral side surface of the basin frame.

3. The loudspeaker according to claim 2, characterized in that Each of the limiting portions is formed by stamping at the connection between the groove peripheral wall and the groove bottom wall.

4. The loudspeaker according to any one of claims 1 to 3, characterized in that: The housing further includes a top plate having a third surface and a fourth surface disposed opposite to the third surface, the top plate being provided with a connecting groove, the connecting groove being formed by the fourth surface being recessed toward the third surface, the connecting groove having a connecting groove bottom wall; The top plate covers the accommodating cavity. Along the height direction of the speaker, the orthographic projection of the bottom wall of the connecting groove on the basin frame is located inside the basin frame, and the bottom wall of the connecting groove is connected to the surface of the basin frame facing the top plate.

5. The loudspeaker according to claim 4, characterized in that The connecting groove further comprises a connecting groove peripheral wall, and the connecting groove peripheral wall surrounds the connecting groove bottom wall; Along the height direction of the speaker, the bottom wall of the connecting groove is spaced apart from the surface of the basin frame facing the top plate, and the bottom wall of the connecting groove is provided with a glue-containing groove, and along the height direction of the speaker, the glue-containing groove passes through the bottom wall of the connecting groove; The speaker also includes an adhesive portion, which includes a first adhesive portion and a second adhesive portion. The first adhesive portion is located between the bottom wall of the connecting groove and the surface of the basin facing the top plate, and connects the bottom wall of the connecting groove and the basin. The second adhesive portion is located in the connecting groove. The second adhesive portion is connected to the surface of the first adhesive portion exposed in the glue-containing groove, and covers the connecting groove peripheral wall of the connecting groove.

6. The loudspeaker according to claim 5, characterized in that The adhesive portion further includes a third adhesive portion. Along the height direction of the speaker, the third adhesive portion is connected to the side of the second adhesive portion facing away from the first adhesive portion, and the third adhesive portion is connected to the fourth surface of the top plate.

7. The loudspeaker according to claim 4, characterized in that The speaker also includes a conducting plate and a reinforcement. The conducting plate is partially accommodated in the accommodating cavity. The conducting plate is electrically connected to the inner core. The reinforcement is accommodated in the accommodating cavity. The reinforcement is arranged on the bottom wall of the accommodating cavity and is spaced apart from the sink. The reinforcement supports part of the conducting plate.

8. The loudspeaker according to claim 7, characterized in that The top plate is provided with a pressing plate, and the pressing plate is convexly arranged on the third surface of the top plate; The side wall of the accommodating cavity is provided with a transition opening, the transition opening is communicated with the accommodating cavity, and the transition opening has two transition side walls arranged opposite to each other and a transition bottom wall connected between the two transition side walls; The guide plate has two card interfaces, the guide plate extends out of the accommodating cavity through the transition port, the guide plate abuts against the transition bottom wall of the transition port, the two card interfaces are respectively clamped on the two transition side walls, the pressing plate is accommodated in the transition port and presses against the guide plate.

9. The loudspeaker according to claim 2, wherein: The sound guide groove has a sound guide groove bottom wall. Along the height direction of the speaker, the sound guide groove bottom wall is away from the groove bottom wall and inclined toward the cavity side wall of the accommodating cavity.

10. The loudspeaker according to claim 1, wherein The bottom wall of the accommodating cavity, the side walls of the accommodating cavity and the inner core form a rear cavity.

11. An electronic device, characterized in that: The speaker comprises a middle frame, a rear shell, a fixing portion, and the speaker according to any one of claims 1 to 10, wherein the middle frame comprises a frame and a middle plate, the frame is provided with a sound outlet, the rear shell, the frame, and the middle plate form a storage space, and the sound outlet is connected to the storage space; A sound guide groove is provided on the bottom wall of the accommodating cavity. The sound guide groove is formed by the second surface being recessed toward the first surface. The notch of the sound guide groove is located on the side wall of the accommodating cavity. The speaker is located in the accommodating space, and the bottom wall of the accommodating cavity is connected to the middle plate through the fixing part. The fixing part is arranged around the core. Along the thickness direction of the electronic device, the core and the middle plate are spaced apart, and the notch of the sound guide groove faces the sound outlet.

12. The electronic device according to claim 11, wherein: The fixing portion, the inner core and the middle plate form a front cavity, and the front cavity is communicated with the sound guide groove.

Images