CN216122887U - Sound production device and electronic equipment - Google Patents

Sound production device and electronic equipment Download PDF

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Publication number
CN216122887U
CN216122887U CN202122561497.2U CN202122561497U CN216122887U CN 216122887 U CN216122887 U CN 216122887U CN 202122561497 U CN202122561497 U CN 202122561497U CN 216122887 U CN216122887 U CN 216122887U
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China
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wall
sound
sound generating
magnetic
magnetic circuit
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CN202122561497.2U
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Chinese (zh)
Inventor
孔洋洋
王兴龙
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Goertek Inc
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Goertek Inc
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Priority to CN202122561497.2U priority Critical patent/CN216122887U/en
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Abstract

The utility model discloses a sound generating device and electronic equipment, wherein the sound generating device comprises a shell and a loudspeaker monomer, the shell is provided with a containing cavity, the shell is provided with a first end and a second end which are opposite, the first end comprises a top wall and a side wall connected with the top wall, a round corner transition area is arranged at the joint of the top wall and the side wall, the top wall or the side wall is provided with a sound outlet communicated with the containing cavity, the loudspeaker monomer is arranged in the containing cavity, at least part of the periphery of the loudspeaker monomer is provided with a baffle wall, and the baffle wall is abutted against the side wall, so that the baffle wall, one side of the loudspeaker monomer back to the sound outlet and the second end are enclosed to form a rear sound cavity. The utility model aims to avoid the monomer from inclining when the monomer in the sound generating device is subjected to a side pushing process, effectively increase the volume of the rear cavity of the sound generating device and improve the acoustic performance of the sound generating device.

Description

Sound production device and electronic equipment
Technical Field
The utility model relates to the technical field of electroacoustic conversion, in particular to a sound generating device and electronic equipment using the same.
Background
The sound generating device is an important component in an electronic product and is used for converting an electric signal into an acoustic signal. The development trend of electronic products is more and more thin, and in order to realize more functions, components and parts in the electronic products are more and more, and the space that must reserve for sound generating mechanism is more and more littleer, and electronic products more and more pay attention to user's music experience, consequently requires sound generating mechanism to have better tone quality.
In the related technology, the sound generating device is composed of an inner core, a metal upper shell and a metal lower shell, the inner core and the bottom surface of the metal upper shell are sealed by glue, the side wall is fixed by laser welding, and in order to enable the distance between the inner core and the metal shell to meet the laser welding, a side pushing process is selected to push the inner core to be close to the side wall of the metal upper shell. Because the metal epitheca is formed by drawing, can form the arc angle at the bottom, the side pushes away the in-process kernel and can take place the slope along epitheca bottom arc angle, leads to the clearance increase between kernel and the epitheca lateral wall to reduce the back chamber volume, can not reach higher performance demand.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a sound generating device and electronic equipment, aiming at avoiding the single body in the sound generating device from inclining when the single body is subjected to a side pushing process, effectively increasing the volume of a rear cavity of the sound generating device and improving the acoustic performance of the sound generating device.
In order to achieve the above object, the present invention provides a sound generating device, including:
the shell is provided with a cavity, the shell is provided with a first end and a second end which are opposite, the first end comprises a top wall and a side wall connected to the top wall, a round corner transition area is arranged at the joint of the top wall and the side wall, and the top wall or the side wall is provided with a sound outlet communicated with the cavity; and
the loudspeaker monomer, the loudspeaker monomer is located hold the intracavity, at least part the free periphery of loudspeaker is equipped with the fender wall, keep off the wall with the lateral wall butt makes keep off the wall the loudspeaker monomer dorsad one side of sound hole with the second end encloses and closes formation back sound chamber.
In one embodiment, the length of the baffle wall protruding the periphery of the speaker unit is greater than or equal to the radius of the rounded transition area.
In one embodiment, the retaining wall is adhesively attached to the sidewall;
or a welding mark line is arranged at the position of the side wall corresponding to the blocking wall, and the blocking wall is connected with the side wall in a welding way;
or, the inner surface of the side wall is provided with a groove corresponding to the position of the blocking wall, and the blocking wall extends into the groove.
In one embodiment, the speaker unit includes:
the shell is arranged in the containing cavity and is positioned at the first end;
a vibration system coupled to the housing and opposite the top wall; and
the magnetic circuit system comprises a magnetic yoke and a magnetic circuit part arranged on the magnetic yoke, the magnetic yoke is connected with one side, back to the vibration system, of the shell, the magnetic circuit part is arranged on one side, facing the vibration system, of the magnetic yoke, the magnetic yoke is provided with a blocking wall extending towards the side wall, and the blocking wall is arranged on one side, back to the magnetic circuit part, of the magnetic yoke and the second end enclosure to form a rear sound cavity.
In one embodiment, the magnetic yoke includes a bottom plate disposed at a bottom of the magnetic circuit portion, and a support arm disposed around the bottom plate and extending toward a direction close to the vibration system relative to the bottom plate, and the blocking wall is disposed on the support arm.
In one embodiment, the magnetic yoke is rectangular;
the blocking wall extends to two ends of the short side direction of the bottom plate along the short side direction of the bottom plate; or, the blocking walls are distributed at intervals along the short side direction of the bottom plate.
In one embodiment, the supporting arm and the blocking wall are integrally formed by bending;
or the bottom plate, the supporting arm and the blocking wall are integrally formed.
In one embodiment, the magnetic circuit portion includes a center magnetic circuit portion and a side magnetic circuit portion provided to the yoke, the center magnetic circuit portion and the side magnetic circuit portion forming a magnetic gap therebetween;
vibration system includes vibrating diaphragm and voice coil loudspeaker voice coil, the vibrating diaphragm is fixed in the shell, the one end of voice coil loudspeaker voice coil with the vibrating diaphragm is connected, the other end of voice coil loudspeaker voice coil hangs and locates in the magnetic gap.
In one embodiment, the top wall is provided with the sound outlet, and the diaphragm is clamped between the shell and the top wall and is arranged opposite to the sound outlet;
and/or the magnetic yoke is rectangular, and a rear sound hole communicated with the magnetic gap and the rear sound cavity is arranged at the corner of the magnetic yoke;
and/or, the tip an organic whole of second end is equipped with the diapire or the apron is installed down to the components of a whole that can function independently, the diapire or offer the filling hole that is used for the filling sound absorbing material down on the apron, it has the damping piece to encapsulate on the filling hole.
The utility model also provides electronic equipment which comprises an equipment shell and the sound generating device, wherein the sound generating device is arranged on the equipment shell.
According to the technical scheme, the sound generating device is provided with the containing cavity in the shell, so that the loudspeaker single body can be conveniently installed and fixed and protected by utilizing the containing cavity, the sound outlet communicated with the containing cavity is formed in the first end of the shell, sound can be conveniently transmitted out through the sound outlet when the loudspeaker single body generates sound, the fillet transition area is arranged at the joint of the top wall and the side wall of the first end of the shell, the baffle wall is arranged on the periphery of the loudspeaker single body, the baffle wall is abutted and limited with the side wall, when the loudspeaker single body is installed in the containing cavity of the shell through a side pushing process, the loudspeaker single body is effectively prevented from inclining, the back cavity volume of the sound generating device is increased, and the acoustic performance of the sound generating device is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a sound generating device according to an embodiment of the present invention;
fig. 2 is a schematic structural view of another view angle of the sound generating device according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a sound generator according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a sound generator according to another embodiment of the present invention;
FIG. 5 is an exploded view of a sound generator according to another embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a speaker unit according to an embodiment of the present invention;
fig. 7 is a schematic cross-sectional view of a speaker unit according to an embodiment of the utility model.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
Also, the meaning of "and/or" and/or "appearing throughout is meant to encompass three scenarios, exemplified by" A and/or B "including scenario A, or scenario B, or scenarios where both A and B are satisfied.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The sound generating device is an important component in an electronic product and is used for converting an electric signal into an acoustic signal. The development trend of electronic products is more and more thin, and in order to realize more functions, components and parts in the electronic products are more and more, and the space that must reserve for sound generating mechanism is more and more littleer, and electronic products more and more pay attention to user's music experience, consequently requires sound generating mechanism to have better tone quality.
In the related technology, the sound production device is composed of an inner core, a metal upper shell and a metal lower shell, the inner core and the bottom surface of the metal upper shell are sealed by glue, the side wall is fixed by laser welding, in order to enable the distance between the inner core and the metal shell to meet the laser welding and ensure that the inner core is placed in place, a side pushing process is selected, and the inner core is pushed to be close to the side wall of the metal upper shell. Because the metal epitheca is formed by drawing, can form the arc angle at the bottom, the side pushes away the in-process kernel and can take place the slope along epitheca bottom arc angle, leads to the clearance increase between kernel and the epitheca lateral wall to reduce the back chamber volume, can not reach higher performance demand.
Based on the above conception and problems, the present invention provides a sound generating device 100, and it can be understood that the sound generating device 100 is applied to an electronic device, and the electronic device may be a mobile phone, a sound box, a computer, an earphone, a watch, a television, or the like, and is not limited herein.
Referring to fig. 1 to 7, in an embodiment of the present invention, the sound generating apparatus 100 includes a housing 1 and a speaker unit 2, where the housing 1 has a cavity 1a, the housing 1 has a first end 1b and a second end 1c opposite to each other, the first end 1b includes a top wall 11 and a side wall 12 connected to the top wall 11, a rounded corner transition region 13 is disposed at a connection portion between the top wall 11 and the side wall 12, the top wall 11 or the side wall 12 is provided with a sound outlet 14 communicating with the cavity 1a, the speaker unit 2 is disposed in the cavity 1a, at least a part of a periphery of the speaker unit 2 is provided with a blocking wall 2313, and the blocking wall 2313 abuts against the side wall 12, so that the blocking wall 2313 and a side of the speaker unit 2 facing away from the sound outlet 14 and the second end 1c surround to form a rear sound cavity 3.
In the present embodiment, the housing 1 of the sound generating apparatus 100 is used for mounting, fixing and protecting the speaker unit 2, that is, the housing 1 provides a mounting base for the speaker unit 2. It is understood that the housing 1 may be a unitary structure or a separate structure, for example, the housing 1 may be selected to be open at one end or open at both ends. The one end opening structure can be an upper end opening or a lower end opening, the other end is a closed end, when the closed end is the upper end corresponding to the vibration system of the speaker unit 2, a small sound outlet 14 is allowed to be arranged on the closed end, and after the speaker unit 2 is assembled from the opening end, the opening end is closed by a cover plate.
As can be understood, as shown in fig. 3 to 7, the speaker unit 2 includes a vibration system 22 and a magnetic circuit system 23, and current is introduced into a magnetic field generated by the magnetic circuit system 23 through the vibration system 22, and an electric signal is converted into mechanical energy under the action of the magnetic field, so that the vibration system 22 generates vibration, and thus the vibration system 22 generates vibration sound.
In this embodiment, the housing 1 has a first end 1b and a second end 1c opposite to each other, and the first end 1b is provided with a sound outlet 14 communicating with the cavity 1a, so that the sound generated by the speaker unit 2 can be transmitted out through the sound outlet 14, thereby achieving the purpose of sound generation. It can be understood that, the first end 1b includes a top wall 11 and a side wall 12 connected to the top wall 11, and a fillet transition area 13 is provided at a junction of the top wall 11 and the side wall 12, so as to facilitate installation of the speaker unit 2 and ensure that the speaker unit 2 is placed in place, and the speaker unit 2 is pushed to be close to the side wall 12 of the housing 1 by adopting a side-push process.
Because the junction of roof 11 and lateral wall 12 is equipped with fillet transition zone 13, so in the side push in-process speaker monomer 2 can appear inclining in fillet transition zone 13 to reduce the back sound chamber 3 volume of sound generating mechanism 100, with the acoustic performance that influences sound generating mechanism 100. According to the utility model, the baffle wall 2313 is arranged on the periphery of the speaker monomer 2, so that the baffle wall 2313 of the speaker monomer 2 is firstly abutted and limited with the side wall 12 of the shell 1 in the side pushing process, the speaker monomer 2 is prevented from entering the fillet transition area 13, the speaker monomer 2 is ensured not to incline, the volume of the rear sound cavity 3 of the sound generating device 100 can be effectively increased, and the acoustic performance of the sound generating device 100 is improved. It is understood that the blocking wall 2313 may be provided at the periphery of the magnetic circuit system 23 of the speaker unit 2. Of course, the blocking wall 2313 may be disposed at the periphery of the housing 21 of the speaker unit 2, which is not limited herein.
In this embodiment, speaker monomer 2 is installed in the appearance chamber 1a of casing 1, make and keep off wall 2313, speaker monomer 2 goes back to one side of phonate hole 14 and second end 1c and encloses and close formation back sound chamber 3, also the second end 1c of casing 1 directly forms enough big back sound chamber 3, do not need extra configuration to form the box structure of back sound chamber 3, consequently, can not increase occupation space on the horizontal direction, the peripheral area of casing 1 has decided the occupation space size of whole sound generating mechanism 100 in the electronic product promptly, help realizing the miniaturization of product, and can compromise speaker monomer 2's volume and back sound chamber 3 volume on miniaturized basis, and then guarantee acoustic performance. It can be understood that, by arranging the rear acoustic cavity 3 below the magnetic circuit system 23 of the speaker unit 2, the shape of the rear acoustic cavity 3 can be a regular structure, and compared with the prior art, the same large rear cavity volume can realize better acoustic effect.
In one embodiment, the length of the baffle wall 2313 protruding beyond the periphery of the speaker unit 2 is greater than or equal to the radius of the rounded transition region 13.
In this embodiment, as shown in fig. 3, fillet transition zone 13 is arc-shaped setting, through keeping off the radius that wall 2313 protrudes 2 peripheral length of speaker monomer is more than or equal to fillet transition zone 13, so carry out the side at speaker monomer 2 and push away the in-process, can ensure that it is spacing with the lateral wall 12 butt of casing 1 earlier to keep off wall 2313, avoid speaker monomer 2 to get into fillet transition zone 13, thereby can guarantee that speaker monomer 2 can not appear the slope, so can effectively increase the volume in sound generating mechanism 100's back sound chamber 3, promote sound generating mechanism 100's acoustic performance.
It will be appreciated that the rounded transition area 13 may be a regular circular arc configuration, i.e. the rounded transition area 13 is 1/4 circular, wherein the vertical distance from the top wall 11 to the side wall 12 is equal to the radius of the rounded transition area 13. Of course, the rounded transition area 13 may be an irregular arc-shaped structure, so as to ensure that the length of the baffle wall 2313 protruding beyond the periphery of the speaker unit 2 is greater than or equal to the vertical distance from the top wall 11 to the side wall 12.
In the present embodiment, the blocking wall 2313 may be provided only on one side of the speaker unit 2 in the side-push direction. Of course, in order to improve the processing efficiency, the speaker unit 2 may be provided in a symmetrical structure in which the blocking walls 2313 are provided on opposite sides of the speaker unit 2 in the side-push direction. In other embodiments, the baffle wall 2313 may be disposed on the periphery of the speaker unit 2, which is not limited herein.
In an embodiment, after the speaker unit 2 is pushed into place, the blocking wall 2313 and the side wall 12 can be connected by gluing, that is, the blocking wall 2313 and the side wall 12 are connected by gluing, so that the installation stability of the speaker unit 2 is improved.
In another embodiment, after the speaker unit 2 is pushed to the right, the blocking wall 2313 and the side wall 12 can be welded, that is, the blocking wall 2313 and the side wall 12 are connected by laser welding, so as to improve the installation stability of the speaker unit 2.
For convenience of positioning and welding, a welding mark line 15 is arranged at a position of the side wall 12 corresponding to the blocking wall 2313, that is, the welding mark line 15 is arranged on the side wall 12 of the housing 1, so that after the speaker unit 2 is pushed to the right, the blocking wall 2313 corresponds to the welding mark line 15, and the blocking wall 2313 is connected with the side wall 12 in a laser welding manner, which is not limited herein.
In yet another embodiment, the inner surface of the sidewall 12 is provided with a groove (not shown) corresponding to the position of the blocking wall 2313, and the blocking wall 2313 extends into the groove. It can be understood that, with such an arrangement, the groove not only can realize the positioning function for the blocking wall 2313, but also can improve the stability of the speaker unit 2 by utilizing the matching of the groove and the blocking wall 2313.
In this embodiment, keep off wall 2313 and bulge 2 peripheral length of speaker monomer more than or equal to the radius of fillet transition zone 13 and the degree of depth sum of recess, so can avoid speaker monomer 2 to get into fillet transition zone 13 to can guarantee that speaker monomer 2 can not appear inclining, so can effectively increase sound generating mechanism 100's back sound chamber 3's volume, promote sound generating mechanism 100's acoustic performance.
In an embodiment, the speaker unit 2 includes a housing 21, a vibration system 22, and a magnetic circuit system 23, wherein the housing 21 is disposed in the cavity 1a and located at the first end 1b, the vibration system 22 is connected to the housing 21 and opposite to the top wall 11, the magnetic circuit system 23 includes a magnetic yoke 231 and a magnetic circuit portion 232 disposed on the magnetic yoke 231, the magnetic yoke 231 is connected to a side of the housing 21 facing away from the vibration system 22, the magnetic circuit portion 232 is disposed on a side of the magnetic yoke 231 facing the vibration system 22, the magnetic yoke 231 is provided with a blocking wall 2313 extending toward the side wall 12, and the blocking wall 2313, a side of the magnetic yoke 231 facing away from the magnetic circuit portion 232, and the second end 1c enclose to form the rear acoustic cavity 3.
In the present embodiment, as shown in fig. 3 to 7, the housing 21 of the speaker unit 2 is used for mounting and fixing the vibration system 22 and the magnetic circuit system 23, that is, the housing 21 provides a mounting base for the vibration system 22 and the magnetic circuit system 23, the housing 21 may be a frame structure or a cylindrical structure, and the vibration system 22 and the magnetic circuit system 23 are oppositely disposed and are respectively connected to two opposite sides of the housing 21.
As can be appreciated, the magnetic circuit portion 232 includes a central magnetic circuit portion 2321 and a side magnetic circuit portion 2322 disposed on the yoke 231, and a magnetic gap 233 is formed between the central magnetic circuit portion 2321 and the side magnetic circuit portion 2322; the vibration system 22 includes a diaphragm 221 and a voice coil 222, the diaphragm 221 is fixed to the housing 21, one end of the voice coil 222 is connected to the diaphragm 221, and the other end of the voice coil 222 is suspended in the magnetic gap 233. Therefore, the voice coil 222 introduces current into the magnetic gap 233 of the magnetic circuit portion 232, and under the action of the magnetic field formed by the magnetic circuit portion 232, the voice coil 222 drives the diaphragm 221 to vibrate, so as to realize sound production.
In the present embodiment, at least one of the center magnetic path portion 2321 and the side magnetic path portion 2322 is provided with a permanent magnet. Specifically, the central magnetic path portion 2321 includes a central magnet and a central magnetic conductive plate, and the side magnetic path portion 2322 includes a side magnetic conductive plate and a side magnet. It is understood that, in order to further simplify the processing process, the side magnetic conductive plate of the side magnetic circuit portion 2322 may be integrated with the casing 21, and the casing 21 may be made of a plastic material or a metal material. Optionally, the housing 21 is made of a metal material, so that the speaker unit 2 can realize rapid heat dissipation through the side magnetic conductive plate and the housing 21, and the heat dissipation effect is improved.
Through being equipped with the blend wall 2313 that extends towards lateral wall 12 on the magnetic conduction yoke 231, so can make magnetic conduction yoke 231 both can increase the area of contact with shell 21 through blend wall 2313 to improve connection stability, can utilize the one end that blend wall 2313 protrudes the shell 21 outer wall to realize the locate function at the side push in-process again, avoid speaker monomer 2 to take place the slope.
In one embodiment, the magnetic yoke 231 includes a bottom plate 2311 and a support arm 2312, the bottom plate 2311 is disposed at the bottom of the magnetic circuit portion 232, the support arm 2312 is disposed around the bottom plate 2311 and extends toward the vibration system 22 relative to the bottom plate 2311, and the blocking wall 2313 is disposed on the support arm 2312.
In the present embodiment, as shown in fig. 4 and 7, the magnetic circuit portion 232 is fixed and installed by the bottom plate 2311 by arranging the magnetic yoke 231 as the bottom plate 2311 and the supporting arm 2312 such that the supporting arm 2312 is disposed at an angle with the bottom plate 2311, and optionally, the supporting arm 2312 is disposed perpendicular to the bottom plate 2311, and the supporting arm 2312 extends toward the housing 21 to achieve connection with the housing 21.
It can be understood that support arm 2312 sets up around bottom plate 2311 for support arm 2312 encloses with bottom plate 2311 and closes formation mounting groove structure, thereby conveniently install magnetic circuit portion 232 spacing in this mounting groove of magnetic yoke 231, not only realize the location installation of magnetic circuit portion 232, still be favorable to simultaneously effectively blockking the sound granule of inhaling in the back sound chamber 3 through the support arm 2312 of magnetic yoke 231 inside getting into speaker monomer 2, influence speaker monomer 2's vocal effect.
Optionally, the base plate 2311, support arm 2312 and retaining wall 2313 are integrally formed. With such an arrangement, on the one hand, the processing steps of the yoke 231 can be simplified, and on the other hand, the structural strength of the yoke 231 can be improved.
It is understood that the magnetic conductive yoke 231 has two long sides and two short sides which are oppositely arranged, that is, the magnetic conductive yoke 231 may be a rectangular structure, that is, the speaker unit 2 is arranged in a rectangular shape. Through protruding support arm 2312 that is equipped with at each minor face, make at least one support arm 2312 buckle towards lateral wall 12 and extend and form and keep off wall 2313, thereby make speaker monomer 2 carry out the side along the direction on long limit and push away, make the fender wall 2313 and the lateral wall 12 of minor face advance the in-process with the side and fix a position, the long limit of magnetic yoke 231 is flush the setting with the long limit outer wall of shell 21 this moment, so can conveniently adopt the laser welding mode to carry out welded connection with the lateral wall 12 on the long limit side of speaker monomer 2 and casing 1, thereby further improve speaker monomer 2's connection stability.
In the present embodiment, the blocking wall 2313, the supporting arm 2312 and the bottom plate 2311 of the magnetic yoke 231 form a zigzag structure, that is, the magnetic yoke 231 is bent to form a zigzag structure. So set up, push away the in-process at the side for the blend stop 2313 of magnetic yoke 231 contacts with lateral wall 12 earlier, can solve the slope problem of speaker monomer 2, ensures that speaker monomer 2 is better with the casing 1 complex, prevents because the slope of speaker monomer 2, and the welding is not in place, reduces sound generating mechanism 100 and falls back speaker monomer 2 risk of droing.
Alternatively, the support arm 2312 and the blocking wall 2313 are integrally formed by bending. Thus, the structural strength of the blocking wall 2313 and the support arm 2312 can be advantageously improved.
In an embodiment, the blocking wall 2313 extends to two ends of the short side direction of the bottom plate 2311 along the short side direction of the bottom plate 2311, that is, the two short sides of the bottom plate 2311 are respectively provided with the supporting arms 2312, each supporting arm 2312 is bent to form the blocking wall 2313, and the blocking wall 2313 extends along the supporting arms 2312 in the short side direction of the bottom plate 2311.
In another embodiment, the blocking wall 2313 is plural, and the plural blocking walls 2313 are distributed at intervals along the short side direction of the bottom plate 2311. It can be understood that the two short sides of the bottom plate 2311 are respectively provided with the supporting arms 2312, each supporting arm 2312 is provided with a plurality of blocking walls 2313, and the plurality of blocking walls 2313 are arranged at intervals along the supporting arms 2312 in the direction of the short sides of the bottom plate 2311, that is, a gap is formed between two adjacent blocking walls 2313, so that the material can be saved, and the limitation is not limited herein.
In an embodiment, the top wall 11 is opened with a sound outlet 14, and the diaphragm 221 is sandwiched between the housing 21 and the top wall 11 and disposed opposite to the sound outlet 14. It can be understood that, so can make sound generating mechanism 100 be positive sound structure to under the condition of the same casing 1 structure, effectively increase the volume of back sound chamber 3, promote sound generating mechanism 100's acoustic performance.
In one embodiment, the magnetic yoke 231 has a rectangular shape, and a rear sound hole communicating with the magnetic gap 233 and the rear sound cavity 3 is formed at a corner of the magnetic yoke 231. It can be understood that the magnetic yoke 231 is a polygonal structure with notches at four corners; a rear sound hole communicating with the magnetic gap 233 and the rear sound chamber 3 is provided at a corner position of the yoke 231, i.e., a position near the notch edge.
In this embodiment, the speaker unit 2 further includes a centering structure, one end of the centering structure is clamped between the blocking wall 2313 of the magnetic yoke 231 and the housing 21, and one end of the centering structure extends into the magnetic gap 233 and is connected to the voice coil 222, so that the voice coil 222 is connected to an external power source through the centering structure, and the centering structure can be used to prevent the voice coil 222 from being polarized in the vibration process, thereby improving the acoustic performance. It will be appreciated that the portion of the centering structure extending into the magnetic gap 233 is opposite the back acoustic aperture in the magnetic yoke 231, so that the back acoustic aperture is used to provide relief from vibrations of the centering structure.
In one embodiment, as shown in fig. 1 to 5, a bottom wall 16 is integrally provided at an end of the second end 1c or a lower cover plate 17 is separately installed, a filling hole 18 for filling the sound-absorbing material is provided on the bottom wall 16 or the lower cover plate 17, and the damping member 4 is sealed in the filling hole 18.
In this embodiment, a bottom wall 16 is integrally disposed at an end portion of the second end 1c of the housing 1, as shown in fig. 2 to 4, at this time, the housing 1 is an integrally formed structure, that is, the top wall 11, the side wall 12 and the bottom wall 16 enclose to form a cavity 1 a. In another embodiment, as shown in fig. 5, the end of the second end 1c is separately installed with a lower cover 17, that is, the second end 1c of the housing 1 is provided with an opening, and the lower cover 17 is installed at the opening of the second end 1 c. Optionally, the bottom wall 16 is made of plastic material; alternatively, the bottom wall 16 comprises an integrally injection molded sheet metal.
It is understood that the lower cover plate 17 can be made of a metal material, which can be made thinner and occupy less space. The lower cover 17 may be flat; or apron 17 is for having the bowl dress structure of diapire and lateral wall down, apron 17 is metal material and in the embodiment that is bowl form structure down, bowl form structure's metal apron 17 has higher intensity down, and occupation space is little, and the existence of lateral wall, partial back sound chamber 3 has been formed, consequently casing 1 highly can reduce, avoid too high plastic housing to need do the wall thickness greatly and guarantee overall structure intensity, and then can increase occupation space's problem, more be favorable to realizing that the product is miniaturized.
In this embodiment, the lower cover plate 17 is adhered to the end surface of the opening of the second end 1c of the casing 1 by a glue layer, that is, the edge of the lower cover plate 17 extends to be flush with the outer wall surface of the side wall 12 of the casing 1, and the surface of the lower cover plate 17 opposite to the end surface of the opening of the second end 1c of the casing 1 is provided with a back glue. The lower cover plate 17 is bonded to the open end face of the second end 1c of the housing 1 by its own adhesive to seal the rear acoustic chamber 3. Of course, in other embodiments, the periphery of the lower cover plate 17 is injection molded with a plastic rim that is ultrasonically welded to the opening at the second end 1c of the housing 1.
It will be appreciated that the filling aperture 18 is used to fill the acoustic cavity 3 with acoustic material by providing the filling aperture 18 in the bottom wall 16 or lower cover plate 17. By arranging the damping member 4, the filling hole 121 is sealed by the damping member 4, and leakage of sound-absorbing particles is avoided. Optionally, the damping member 4 is made of PET.
In this embodiment, the damping member 4 may further have air-permeable pores that allow air to pass therethrough but do not allow sound-absorbing material to pass therethrough; alternatively, the damping member 4 is further provided with a leakage hole, and the leakage hole is covered with a damping net which allows air to pass through but does not allow the sound-absorbing material to pass through. So that the filling hole 18 can also be used as a rear cavity leakage hole to balance the air pressure inside and outside the sound generating device 100. Furthermore, the size of the acoustic resistance can be adjusted by adjusting the size of the air-permeable micropores or adjusting the mesh size of the damping net.
In an embodiment, the bottom wall 16 or the lower cover plate 17 is provided with a damping hole communicated with the rear sound cavity 3, and the sound generating device 100 further includes a damping member covering the damping hole. As can be understood, the air leakage or ventilation effect on the filling cavity is realized by the damping holes through arranging the damping pieces at the damping holes.
In an embodiment, as shown in fig. 1 and 2, the sound generating device 100 further includes a flexible circuit board 5, and a portion of the flexible circuit board 5 extends into the cavity 1a and is electrically connected to the speaker unit 2.
It will be appreciated that the flexible circuit board 5 has an inner pad located within the cavity 1a such that the flexible circuit board 5 is electrically connected to the speaker unit 2 through the inner pad. When casing 1 is the metal casing, the position that the interior perisporium of lateral wall 12 corresponds interior pad is equipped with insulating isolator to effectively avoid interior pad to be connected with casing 1 through insulating isolator and the condition that appears the electric leakage. Alternatively, the insulating spacer may be an insulating tape, a mylar film, or the like, which is not limited herein.
It can be understood that the flexible circuit board 5 is further provided with an outer bonding pad, and the outer bonding pad is located at one end of the flexible circuit board 5 extending out of the cavity, so that the flexible circuit board 5 can be connected with an external power supply through the outer bonding pad.
The utility model further provides an electronic device, which comprises a device shell and the sound generating device 100, wherein the sound generating device 100 is arranged in the device shell. The specific structure of the sound generating device 100 refers to the foregoing embodiments, and since the electronic device adopts all the technical solutions of all the foregoing embodiments, at least all the beneficial effects brought by the technical solutions of the foregoing embodiments are achieved, and no further description is given here. In this embodiment, the electronic device further includes a device housing, and the sound generating device 100 is connected to the device housing.
In this embodiment, a cavity is disposed in the device housing, and the sound generating device 100 is disposed in the cavity. It is understood that the electronic device may be a mobile phone, a sound box, a computer, a headset, a watch, a television, a tablet computer, or the like, and is not limited herein.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A sound generating device, the sound generating device comprising:
the shell is provided with a cavity, the shell is provided with a first end and a second end which are opposite, the first end comprises a top wall and a side wall connected to the top wall, a round corner transition area is arranged at the joint of the top wall and the side wall, and the top wall or the side wall is provided with a sound outlet communicated with the cavity; and
the loudspeaker monomer, the loudspeaker monomer is located hold the intracavity, at least part the free periphery of loudspeaker is equipped with the fender wall, keep off the wall with the lateral wall butt makes keep off the wall the loudspeaker monomer dorsad one side of sound hole with the second end encloses and closes formation back sound chamber.
2. The sound generating apparatus of claim 1, wherein the length of the baffle wall protruding beyond the perimeter of the speaker unit is greater than or equal to the radius of the rounded transition region.
3. The sound generating device of claim 1 wherein said retaining wall is adhesively attached to said side wall;
or a welding mark line is arranged at the position of the side wall corresponding to the blocking wall, and the blocking wall is connected with the side wall in a welding way;
or, the inner surface of the side wall is provided with a groove corresponding to the position of the blocking wall, and the blocking wall extends into the groove.
4. The sound generating apparatus according to any one of claims 1 to 3, wherein the speaker unit includes:
the shell is arranged in the containing cavity and is positioned at the first end;
a vibration system coupled to the housing and opposite the top wall; and
the magnetic circuit system comprises a magnetic yoke and a magnetic circuit part arranged on the magnetic yoke, the magnetic yoke is connected with one side, back to the vibration system, of the shell, the magnetic circuit part is arranged on one side, facing the vibration system, of the magnetic yoke, the magnetic yoke is provided with a blocking wall extending towards the side wall, and the blocking wall is arranged on one side, back to the magnetic circuit part, of the magnetic yoke and the second end enclosure to form a rear sound cavity.
5. The sound generating apparatus as claimed in claim 4, wherein said yoke comprises a bottom plate provided at the bottom of said magnetic circuit portion and a support arm provided around said bottom plate and extending toward the direction close to said vibration system with respect to said bottom plate, said blocking wall being provided at said support arm.
6. The sound generating apparatus of claim 5 wherein said yoke is rectangular;
the blocking wall extends to two ends of the short side direction of the bottom plate along the short side direction of the bottom plate; or, the blocking walls are distributed at intervals along the short side direction of the bottom plate.
7. The sound generating apparatus as claimed in claim 5, wherein said supporting arm and said retaining wall are integrally formed by bending;
or the bottom plate, the supporting arm and the blocking wall are integrally formed.
8. The sound generating apparatus as claimed in claim 4, wherein said magnetic circuit portion includes a central magnetic circuit portion and a side magnetic circuit portion provided to said yoke, said central magnetic circuit portion and said side magnetic circuit portion forming a magnetic gap therebetween;
vibration system includes vibrating diaphragm and voice coil loudspeaker voice coil, the vibrating diaphragm is fixed in the shell, the one end of voice coil loudspeaker voice coil with the vibrating diaphragm is connected, the other end of voice coil loudspeaker voice coil hangs and locates in the magnetic gap.
9. The sound-emitting device according to claim 8, wherein said top wall is provided with said sound-emitting hole, and said diaphragm is sandwiched between said housing and said top wall and disposed opposite to said sound-emitting hole;
and/or the magnetic yoke is rectangular, and a rear sound hole communicated with the magnetic gap and the rear sound cavity is arranged at the corner of the magnetic yoke;
and/or, the tip an organic whole of second end is equipped with the diapire or the apron is installed down to the components of a whole that can function independently, the diapire or offer the filling hole that is used for the filling sound absorbing material down on the apron, it has the damping piece to encapsulate on the filling hole.
10. An electronic device comprising a device housing and a sound generating device according to any one of claims 1 to 9, the sound generating device being provided in the device housing.
CN202122561497.2U 2021-10-22 2021-10-22 Sound production device and electronic equipment Active CN216122887U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122561497.2U CN216122887U (en) 2021-10-22 2021-10-22 Sound production device and electronic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122561497.2U CN216122887U (en) 2021-10-22 2021-10-22 Sound production device and electronic equipment

Publications (1)

Publication Number Publication Date
CN216122887U true CN216122887U (en) 2022-03-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122561497.2U Active CN216122887U (en) 2021-10-22 2021-10-22 Sound production device and electronic equipment

Country Status (1)

Country Link
CN (1) CN216122887U (en)

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