Basin stand, loudspeaker and electronic equipment

Abstract

The utility model provides a basin stand, a loudspeaker and electronic equipment, the basin stand is applied to the loudspeaker, the basin stand comprises a first cavity and a second cavity which are communicated with each other through an annular connecting part, and the diameter of the first cavity is larger than that of the second cavity; the first cavity is provided with an opening; the annular connecting part is provided with at least one sound guide channel, and the sound guide channel is provided with a sound inlet hole located in the first cavity and a sound outlet hole located outside the first cavity and the second cavity; the sound guide channel is a nonlinear channel. According to the embodiment of the invention, the sound guide channel is arranged on the basin stand, so that the air pressure in the first cavity and the second cavity and the air pressure outside the first cavity and the second cavity can be balanced, and the purpose of forming the exhaust hole in the tuning paper in the prior art is achieved. And the sound guide channel is a non-linear channel, so that dust and other foreign matters are not easy to enter the first cavity and the second cavity, and noise caused by the foreign matters is further reduced.

Description

Technical Field

[0001] This application belongs to the technical field of audio devices. More specifically, it relates to a chassis, a speaker, and an electronic device. Background Art

[0002] Currently, in the design of speakers (loudspeakers), the traditional method is to open exhaust holes on the tuning paper to achieve air pressure balance and optimize sound quality. However, this design has significant drawbacks: when the speaker diaphragm vibrates, the air pressure inside the speaker cavity fluctuates, forming positive or negative pressure. When the pressure inside the speaker cavity is negative, dust and other foreign objects are likely to enter the speaker cavity from the open exhaust holes. These foreign objects will cause the speaker to produce noise during operation, seriously affecting the sound quality purity and user experience. Summary of the Utility Model

[0003] The purpose of the embodiments of this application is to provide a chassis, a speaker, and an electronic device to solve the problem in the prior art that when the pressure inside the speaker cavity is negative, dust and other foreign objects are likely to enter through the exhaust holes opened on the tuning paper, and these foreign objects will produce noise during the operation of the speaker, seriously affecting the sound quality purity and user experience.

[0004] To achieve the above purpose, the technical solution adopted in the embodiments of this application is: to provide a chassis, which is applied to a speaker. The chassis includes a first cavity and a second cavity that are interconnected through an annular connecting portion. The diameter of the first cavity is larger than the diameter of the second cavity; the first cavity has an opening.

[0005] The annular connecting portion is provided with at least one sound guiding channel, and the sound guiding channel has a sound inlet hole located in the first cavity and a sound outlet hole located outside the first cavity and the second cavity.

[0006] The sound guiding channel is a non-linear channel.

[0007] In the embodiments of this application, by opening a sound guiding channel on the chassis, air can enter and exit the first cavity and the second cavity through the sound guiding channel, thereby balancing the air pressure inside and outside the first cavity and the second cavity, achieving the purpose of opening exhaust holes on the tuning paper in the past. And the sound guiding channel is a non-linear channel, so dust and other foreign objects are not easily introduced into the first cavity and the second cavity, and thus the noise caused by foreign objects is reduced.

[0008] In an optional implementation manner of the first aspect, the orientation of the sound inlet hole is parallel to the axis direction of the first cavity, and the orientation of the sound outlet hole is perpendicular to the axis direction of the first cavity.

[0009] In an alternative embodiment of the first aspect, the sound guiding channel includes a first channel and a second channel; the annular connecting portion includes an annular connecting plate and a first boss provided on a surface of the annular connecting plate away from the first cavity; the first channel is provided along the thickness direction of the annular connecting plate, and one end of the first channel is the sound inlet hole, and the other end of the first channel communicates with the second channel; the second channel is provided along the length direction of the first boss, and the sound outlet hole is located at one or both ends of the second channel.

[0010] In an alternative embodiment of the first aspect, two second bosses are further provided on a surface of the annular connecting plate away from the first cavity, and the first boss is arc-shaped; the two second bosses and the first boss enclose a first mounting groove for mounting a PCB board and a second mounting groove for mounting tuning paper; one or more tuning holes are provided on the annular connecting plate, and the positions of the one or more tuning holes correspond to the position of the second mounting groove.

[0011] In an alternative embodiment of the first aspect, the diameter of the speaker frame is 20 mm - 50 mm, the aperture of the sound guiding channel is 0.5 mm - 3 mm, and the length of the sound guiding channel is 10 mm - 30 mm. In this way, the sound guiding channel not only functions as an exhaust hole but also as a phase inverter, so that the speaker prepared by this speaker frame can enhance the bass effect and make the sound quality of the speaker better.

[0012] In a second aspect, an embodiment of the present application further discloses a speaker, including:

[0013] A speaker frame as described in any one of the first aspect;

[0014] A vibration system covering the opening of the first cavity;

[0015] A driving system provided in the second cavity; the driving system is used to drive the vibration system to vibrate to generate sound waves;

[0016] A PCB board and tuning paper, both mounted on a surface of the annular connecting portion away from the first cavity.

[0017] In an alternative embodiment of the second aspect, the vibration system includes: a sounding film and a voice coil, the voice coil is connected to the middle of a surface of the sounding film close to the second cavity, and the edge of the sounding film is connected to the speaker frame.

[0018] In an alternative embodiment of the second aspect, the driving system includes:

[0019] A washer;

[0020] A magnetic component, one side surface of the magnetic component close to the vibration system abuts against one side surface of the washer away from the vibration system;

[0021] A U cup, having a groove with an opening facing the vibration system, one side surface of the bottom of the groove close to the vibration system abuts against one side surface of the magnetic component away from the vibration system, and the U cup is fixed in the second cavity;

[0022] There is a first gap between the circumferential outer side walls of the washer and the magnetic component and the circumferential inner side wall of the U cup;

[0023] At least part of the voice coil is located in the first gap.

[0024] In an optional implementation manner of the second aspect, the drive system includes:

[0025] A washer, which is annular and has a first through hole in the middle;

[0026] A magnetic component, which is annular and has a second through hole in the middle; one side surface of the magnetic component close to the vibration system abuts against one side surface of the washer away from the vibration system;

[0027] A T iron, including a bottom plate and a cylindrical boss; one side surface of the bottom plate close to the vibration system abuts against one side surface of the magnetic component away from the vibration system;

[0028] The circumferential outer side walls of the washer and the magnetic component abut against the circumferential inner side wall of the second cavity;

[0029] The cylindrical boss is located in the first through hole and the second through hole, and there is a second gap between the circumferential side wall of the cylindrical boss and the circumferential side walls of the first through hole and the second through hole;

[0030] At least part of the voice coil is located in the second gap.

[0031] In an optional implementation manner of the second aspect, it further includes a mounting seat, and a third through hole is provided on the mounting seat, and the circumferential inner side wall of the third through hole is connected to the circumferential outer side wall of the chassis.

[0032] In a third aspect, an embodiment of the present application further discloses an electronic device, including a housing and the speaker according to any one of the second aspect, and the speaker is installed in the housing. Description of the Drawings

[0033] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0034] Figure 1 Structural schematic diagram of opening exhaust holes in the tuning paper in the prior art;

[0035] Figure 2 Structural schematic of the basin frame provided by the embodiment of the present application Figure 1 ;

[0036] Figure 3 Structural schematic of the basin frame provided by the embodiment of the present application Figure 2 ;

[0037] Figure 4 Structural schematic of the basin frame provided by the embodiment of the present application Figure 3 ;

[0038] Figure 5 Top view of the basin frame provided by the embodiment of the present application;

[0039] Figure 6 For Figure 5 A - A cross - sectional view in

[0040] Figure 7 Structural schematic of the speaker provided by the embodiment of the present application Figure 1 ;

[0041] Figure 8 Structural schematic of the speaker provided by the embodiment of the present application Figure 2 ;

[0042] Figure 9 Exploded structural schematic of the speaker provided by the embodiment of the present application Figure 1 ;

[0043] Figure 10 Exploded structural schematic of the speaker provided by the embodiment of the present application Figure 2 ;

[0044] Figure 11 Top view of the speaker provided by the embodiment of the present application;

[0045] Figure 12 For Figure 11 B - B cross - sectional view in

[0046] Figure 13 Structural schematic of the vibration system provided by the embodiment of the present application Figure 1 ;

[0047] Figure 14 Schematic structure of the vibration system provided by the embodiment of the present application Figure 2 ;

[0048] Figure 15 Schematic structure diagram of the drive system provided by the embodiment of the present application;

[0049] Figure 16 Cross-sectional view of another loudspeaker provided by the embodiment of the present application;

[0050] Figure 17 Frequency response curves of the existing loudspeaker (with exhaust holes opened on the tuning paper) provided by the embodiment of the present application and the loudspeaker (with sound guiding channels opened on the chassis) provided by the embodiment of the present application.

[0051] Among them, each reference numeral in the figure: 1 - chassis, 11 - first enclosing plate, 111 - wire groove, 12 - annular connecting part, 121 - annular connecting plate, 122 - first boss, 123 - second boss, 124 - first mounting groove, 125 - second mounting groove, 126 - tuning hole, 13 - second enclosing plate, 14 - sound guiding channel, 141 - second channel, 142 - first channel, 143 - sound inlet hole, 144 - sound outlet hole, 15 - first limiting step, 16 - first cavity, 17 - second cavity, 18 - guiding mounting surface, 2 - vibration system, 21 - sound film, 22 - voice coil, 3 - drive system, 31 - washer, 311 - first through hole, 32 - magnetic part, 321 - second through hole, 33 - U-shaped cup, 34 - T-iron, 341 - bottom plate, 342 - cylindrical boss, 35 - first gap, 36 - second gap, 4 - tuning paper, 41 - exhaust hole, 5 - PCB board, 6 - mounting seat, 61 - third through hole, 62 - second limiting step, 7 - washer. Detailed implementation manners

[0052] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0053] In the description of the embodiments of the present application, the term "a plurality" means two or more (including two).

[0054] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0055] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "coupling", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0056] It should be understood that in the present application, "electrical connection" can be understood as the physical contact and electrical conduction of components; it can also be understood as a form of connection between different components in a circuit structure through physical lines such as copper foils or wires of a printed circuit board (PCB) that can transmit electrical signals.

[0057] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the embodiments of the present application.

[0058] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0059] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0060] References herein to "embodiments" mean that the particular features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments in any suitable manner.

[0061] See Figure 1 , in the current speaker, an exhaust hole 41 is formed in the tuning paper 4 to achieve air pressure balance and optimize the sound quality. However, this design has significant drawbacks: when the sound membrane of the speaker vibrates, the air pressure inside the cavity of the speaker fluctuates accordingly, forming positive pressure or negative pressure. When the pressure inside the cavity of the speaker is negative, accumulated dust and other foreign objects are likely to enter the cavity of the speaker from the open exhaust hole 41. These foreign objects will cause the speaker to produce noise during operation, seriously affecting the sound quality purity and user experience. Therefore, in the embodiments of the present application, the method of forming the exhaust hole 41 in the tuning paper 4 is changed, and holes are formed in the chassis 1 to reduce the entry of sundries into the speaker, thereby reducing the noise caused by foreign objects. The specific implementation method is as follows:

[0062] Please refer to Figures 2 - 6 , the chassis 1 provided by the embodiments of the present application will now be described. The chassis 1 is applied to a speaker. The chassis 1 includes a first cavity 16 and a second cavity 17 that are interconnected through an annular connecting portion 12. The diameter of the first cavity 16 is larger than the diameter of the second cavity 17; the first cavity 16 has an opening; at least one sound guiding channel 14 is provided on the annular connecting portion 12. The sound guiding channel 14 has a sound inlet hole 143 located in the first cavity 16 and a sound outlet hole 144 located outside the first cavity 16 and the second cavity 17; the sound guiding channel 14 is a non-linear channel.

[0063] In the embodiments of the present application, by forming the sound guiding channel 14 in the chassis 1, air can enter and exit the first cavity 16 and the second cavity 17 through the sound guiding channel 14, so as to balance the air pressure inside and outside the first cavity 16 and the second cavity 17, achieving the purpose of forming the exhaust hole 41 in the tuning paper 4 in the past. And because the sound guiding channel 14 is a non-linear channel, compared with a linear sound guiding channel 14, dust and other foreign objects are not easily introduced into the first cavity 16 and the second cavity 17, thereby reducing the noise caused by foreign objects.

[0064] Optionally, both the first cavity 16 and the second cavity 17 may be cylindrical cavities. The axes of the first cavity 16 and the second cavity 17 coincide; that is, the cross-section of the first cavity 16 and the second cavity 17 along the common axis direction of the first cavity 16 and the second cavity 17 is convex-shaped, and both sides of the first cavity 16 and the second cavity 17 along the common axis direction of the first cavity 16 and the second cavity 17 have openings. In addition, both the first cavity 16 and the second cavity 17 may also be elliptical or rectangular, etc.

[0065] As an optional implementation manner, since the sound inlet hole and the sound outlet hole of the linear channel have different orientations, but the orientations of the sound inlet hole and the sound outlet hole are opposite (the orientations of the sound inlet hole and the sound outlet hole differ by 180°), in addition, the normal line passing through the midpoint of the sound inlet hole and the normal line passing through the midpoint of the sound outlet hole are collinear. Therefore, the orientations of the sound inlet hole 143 and the sound outlet hole 144 of the sound guiding channel 14 in the embodiment of the present application are different and not opposite. Optionally, the orientations of the sound inlet hole 143 and the sound outlet hole 144 are perpendicular to each other. Refer to Figures 2 - 4 , the orientation of the sound inlet hole 143 is parallel to the axis direction of the first cavity 16, and the orientation of the sound outlet hole 144 is perpendicular to the axis direction of the first cavity 16. As another optional implementation manner, the normal line passing through the midpoint of the sound inlet hole and the normal line passing through the midpoint of the sound outlet hole are not collinear. For example, the sound guiding channel 14 may be a channel similar to an N shape.

[0066] Optionally, the annular connecting portion 12 includes an annular connecting plate 121 and a first boss 122 provided on the surface of the annular connecting plate 121 away from the first cavity 16. The thickness of the annular connecting plate 121 may be the same as the height of the second cavity 17 (not shown in the figure), or may be less than the height of the second cavity 17. When the thickness of the annular connecting plate 121 is the same as the height of the second cavity 17, the second cavity 17 is formed by enclosing the inner side wall of the annular connecting plate 121. When the thickness of the annular connecting plate 121 is less than the height of the second cavity 17, the second cavity 17 is formed by enclosing the second enclosure 13 (as shown in Figure 3 , Figure 4 ), and the second enclosure 13 is in the shape of a circular ring column. Refer to Figure 2 , the first cavity 16 is formed by enclosing the first enclosure 11 and the annular connecting plate 121, and the first enclosure 11 is also in the shape of a circular ring column.

[0067] Refer to Figures 5 - 6, the sound guiding channel 14 includes a first channel 142 and a second channel 141; the second channel 141 is arranged along the thickness direction of the annular connecting plate 121, and the first channel 142 is arranged along the length direction of the first boss 122. One end of the second channel 141 is the sound inlet hole 143, and the other end is connected to the first channel 142. The first channel 142 and the second channel 141 have two connection modes. One is that the other end of the second channel 141 is connected to the middle of the first channel 142. At this time, the sound guiding channel 14 is T-shaped, and the sound guiding channel 14 has one sound inlet hole 143 and two sound outlet holes 144; among them, Figure 2 shows the sound inlet hole 143 of the sound guiding channel 14, Figure 3 and Figure 4 show the two sound outlet holes 144 from different angles. The other is that the other end of the second channel 141 is connected to one end of the first channel 142. At this time, the sound guiding channel 14 is L-shaped (not shown in the figure), and the sound guiding channel 14 has one sound inlet hole 143 and one sound outlet hole 144.

[0068] Optionally, referring to Figures 3 - 4 , two second bosses 123 are further provided on the surface of the annular connecting plate 121 away from the first cavity 16, and the first boss 122 is arc-shaped. One side of the first boss 122 can either abut against the outer side wall of the second enclosing plate 13 (as shown in Figure 3 , Figure 4 ), or abut against the inner side wall of the first enclosing plate 11 (not shown in the figure). The two second bosses 123 and the first boss 122 enclose a first installation groove 124 for installing the PCB board 5 and a second installation groove 125 for installing the tuning paper 4; the first installation groove 124 and the second installation groove 125 together form a circular ring. One or more tuning holes 126 are provided on the annular connecting plate 121 corresponding to the second installation groove 125. The tuning paper 4 is bonded in the second installation groove 125, and after bonding, the tuning paper 4 covers one or more tuning holes 126. It should be noted that no exhaust holes 41 need to be designed on the tuning paper 4 installed in the second installation groove 126.

[0069] A wire groove 111 is opened on the first enclosing plate 11 corresponding to the first installation groove 124. By restricting the wire between the PCB board 5 and the voice coil 22 in the wire groove 111, it helps to reduce the disorder of the wires inside the speaker, improve the overall aesthetics and reliability; the wire groove 111 can also provide certain protection for the wires to prevent the wires from being damaged during vibration or impact.

[0070] Optionally, the diameter of the basin frame 1 is 20 mm - 50 mm, the aperture of the sound guiding channel 14 is 0.5 mm - 3 mm, and the length of the sound guiding channel 14 is 10 mm - 30 mm. This kind of basin frame can be applied to head-mounted headphones. At this time, the sound guiding channel 14 not only functions as the exhaust hole 41, but also acts as a phase inverter, so that the loudspeaker prepared by the basin frame 1 can improve the bass effect and make the sound quality of the loudspeaker better. The reason for the phase inversion effect is that when the basin frame 1 is applied to the loudspeaker, when the loudspeaker is working, sound waves will be generated on both the front side (the side of the sound membrane away from the second cavity, that is, the side facing the listener) and the rear side (the side of the sound membrane close to the second cavity, that is, the side where the sound membrane is located inside the first cavity) of the sound membrane. However, since the phase of the sound wave behind the sound membrane is opposite to that in front (with a 180-degree difference), if not processed, this part of the sound wave will cancel out the sound wave in front, resulting in a weakened low-frequency response. The design of the sound guiding channel 14 is precisely to utilize the sound wave behind the sound membrane, by changing its propagation path and phase, so that it can be superimposed with the sound wave in front, thereby enhancing the low-frequency response. In addition, the sound guiding channel 14, as an additional resonance cavity, acts together with the first cavity 16 and the second cavity 17 inside the loudspeaker to form a more complex resonance system. This resonance effect will enhance the amplitude and loudness of the low-frequency sound wave, making the bass more full and powerful.

[0071] By adjusting the length, cross-sectional shape, cross-sectional area, and number of the sound guiding channel 14, the resonance frequency of the sound guiding channel 14 can be adjusted to enhance the low-frequency effect.

[0072] Calculation of the resonance frequency:

[0073] f0: Resonance frequency of the air output by the sound guiding channel 14 (Hertz);

[0074] v: Speed of sound, 340 m / s;

[0075] S: Inner cross-sectional area of the sound guiding channel 14 (square meters);

[0076] V: Effective volume of the loudspeaker accommodation cavity (when calculating the occupied space of the sound guiding channel 14, it is regarded as a solid) (cubic meters);

[0077] L: Length of the sound guiding channel 14 (meters).

[0078] Therefore, when applying the basin frame 1 to other electronic devices (such as in-ear headphones, sports Bluetooth headphones, speakers, etc.), it is necessary to change the size of the basin frame 1 and then design the shape, size, length, etc. of the sound guiding channel 14.

[0079] Optionally, the basin frame 1 of the embodiment of the present application is an integrally formed structure.

[0080] Please refer to Figures 7 - 10, an embodiment of the present application also discloses a loudspeaker, including: a vibration system 2, a driving system 3, a PCB board 5, a tuning paper 4, and the chassis 1 of each of the above embodiments.

[0081] Among them, the vibration system 2 covers the opening of the first cavity 16. Specifically, refer to Figures 13 - 14 , the vibration system 2 includes: a diaphragm 21 and a voice coil 22. The voice coil 22 is connected to the middle of the surface of the diaphragm 21 close to the second cavity 17 by glue, and the edge of the diaphragm 21 can be adhesively bonded to the chassis 1 through back glue.

[0082] The voice coil 22 is a coil wound with copper wire, aluminum wire or copper-plated aluminum wire, and is annular.

[0083] The diaphragm 21, also known as the vibrating membrane or paper cone, is a lightweight membrane that can vibrate freely. It vibrates with the vibration of the voice coil 22. Since the diaphragm 21 is located at the opening covering the first cavity 16, and the diameter of the first cavity 16 is larger than the diameter of the second cavity 17, the surface area of the membrane is further increased, and it can more effectively convert the vibration into sound waves and radiate them into the surrounding air. The embodiment of the present application does not limit the shape of the diaphragm 21; the material of the diaphragm 21 is not limited. For example, the material can be at least one of paper, plastic, metal or fiber.

[0084] The driving system 3 is arranged in the second cavity 17, and the driving system 3 is used to drive the vibration system 2 to vibrate to generate sound waves.

[0085] As an optional implementation manner, refer to Figure 9 、 Figure 10 , the driving system 3 includes: a washer 31, a magnetic member 32 and a U cup 33.

[0086] The washer 31, also known as the magnetic conductive plate, is cylindrical. The washer 31 can direct and concentrate the magnetic field generated by the magnetic member 32 in the space where the voice coil 22 moves, and provide a constant and uniform magnetic field environment for the voice coil 22. The thickness of the washer 31 and the width of the voice coil 22 cooperate to determine the magnitude of the bass distortion of the loudspeaker.

[0087] The magnetic member 32, that is, the magnet / magnetic stone, is cylindrical. One side surface of the magnetic member 32 close to the vibration system 2 can be adhesively bonded to the other side surface of the washer 31 far from the vibration system 2 through glue, or through a solid adhesive layer (such as double-sided tape).

[0088] The U cup 33, namely the U iron, has a groove with an opening facing the vibration system 2. The surface of the bottom of the groove close to the vibration system 2 and the surface of the magnetic part 32 far from the vibration system 2 can be bonded by glue or through a solid bonding layer (such as double-sided tape), and the outer circumferential wall of the U cup 33 is bonded to the inner circumferential wall of the second cavity 17 by glue. The U cup 33 plays a role of magnetic conduction in the speaker, which can gather the diverging magnetic lines of force, thereby increasing the density of the magnetic lines of force and further enhancing the intensity of the magnetic field.

[0089] The U cup 33, the magnetic part 32 and the washer 31 together form a closed magnetic circuit system, providing a constant and uniform magnetic field environment for the voice coil 22.

[0090] In this embodiment, referring to Figure 12 , a first limiting step 15 is provided on the inner side wall above the second cavity 17 in the axial direction, and a guiding mounting surface 18 is provided on the inner side wall below the second cavity 17 in the axial direction. The first limiting step 15 can limit the depth of the U cup 33 inserted into the second cavity 17. Since the diameter of the outer circumferential wall of the U cup 33 is the same as that of the second cavity 17, the guiding mounting surface 18 can play a guiding role to facilitate the U cup 33 to be smoothly and quickly installed into the second cavity 17.

[0091] Referring to Figure 15 , there is a first gap 35 between the outer circumferential walls of the washer 31 and the magnetic part 32 and the inner circumferential wall of the U cup 33; at least part of the voice coil 22 is located in the first gap 35 (referring to Figure 12 ). When an audio signal (i.e., a changing current) passes through the voice coil 22, according to the principle of electromagnetic induction, the voice coil 22 will generate a changing magnetic field. This changing magnetic field interacts with the constant magnetic field of the magnetic part 32, causing the voice coil 22 to receive a changing force. The magnitude and direction of this force change with the change of the current in the audio signal. Since the voice coil 22 receives a changing force, it will start to vibrate under the action of this force. Specifically, when the current in the audio signal increases, the force received by the voice coil 22 also increases, causing it to move in the direction closer to the magnetic part 32; conversely, when the current decreases, the force received by the voice coil 22 also decreases, and it moves in the direction away from the magnetic part 32. Since the voice coil 22 is connected to the voice diaphragm 21. When the voice coil 22 vibrates, it drives the voice diaphragm 21 to vibrate, thereby forming sound.

[0092] As another alternative embodiment, referring to Figure 16 , the drive system 3 includes: a washer 31, a magnetic part 32 and a T iron 34.

[0093] In this embodiment, both the washer 31 and the magnetic member 32 are annular. A first through hole 311 is provided in the middle of the washer 31, and a second through hole 321 is provided in the middle of the magnetic member 32. The T-iron 34 includes an integrally formed bottom plate 341 and a cylindrical boss 342. The circumferential side walls of the washer 31 and the magnetic member 32 are adhesively bonded to the inner side wall of the second cavity 17 by glue. The surface of the magnetic member 32 close to the vibration system 2 is adhesively bonded to the surface of the washer 31 far from the vibration system 2. The surface of the bottom plate 341 close to the vibration system 2 is adhesively bonded to the surface of the magnetic member 32 far from the vibration system 2; and, the edge of the surface of the bottom plate 341 close to the vibration system 2 is adhesively bonded to the end face of the second shroud 13. The T-iron 34, the magnetic member 32, and the washer 31 together form a closed magnetic circuit system, providing a constant and uniform magnetic field environment for the voice coil 22.

[0094] The cylindrical boss 342 is located in the first through hole 311 and the second through hole 321, and there is a second gap 36 between the circumferential side wall of the cylindrical boss 342 and the circumferential side walls of the first through hole 311 and the second through hole 321. At least part of the voice coil 22 is located in the second gap 36. See Figure 9 , Figure 10 , the PCB board 5 and the tuning paper 4 are both mounted on the surface of the annular connecting portion 12 far from the first cavity 16. And, there are no exhaust holes 41 on the tuning paper 4.

[0095] As an alternative embodiment, see Figures 7 - 10 , the loudspeaker further includes a mounting seat 6. A third through hole 61 is provided on the mounting seat 6, and the circumferential inner side wall of the third through hole 61 is connected to the circumferential outer side wall of the speaker frame 1. Specifically, an internal thread is provided on the circumferential inner side wall of the third through hole 61, and an external thread is provided on the circumferential outer side wall of the speaker frame 1. The mounting seat 6 and the speaker frame 1 are connected by threads.

[0096] See Figure 9 , Figure 10 , a second limiting step 62 is further provided on the circumferential inner side wall of the third through hole 61, and a washer 7 can be provided between the speaker frame 1 and the second limiting step 62.

[0097] The mounting seat 6 can be made of plastic materials (such as ABS, PC, PA, fiberglass, etc.), metal materials (such as die-cast aluminum, aluminum alloy, etc.).

[0098] In the embodiment of the present application, by changing the method of venting through the exhaust holes 41 on the tuning paper 4 in the past and directly providing a sound guiding channel 14 in the speaker frame 1, on the one hand, it can reduce the entry of debris into the first cavity 16 and the second cavity 17, thereby reducing the noise caused by foreign objects. On the other hand, the sound guiding channel 14 can improve the bass effect of the loudspeaker and make the sound quality of the loudspeaker better. Specifically see Figure 17 , Figure 17is the frequency response curve. The solid line represents the loudspeaker of the embodiment of the present application (hereinafter referred to as loudspeaker A), that is, a sound guiding channel 14 is opened on the speaker frame 1, and there is no exhaust hole 41 on the tuning paper 4; the dotted line represents the loudspeaker (hereinafter referred to as loudspeaker B) with an exhaust hole 41 opened on the tuning paper 4 in the past.

[0099] The frequency response curve of a loudspeaker is a graph that describes the ability of the loudspeaker to output sound pressure level at different frequencies. As can be seen from Figure 17 it, in the low-frequency band curve with a frequency of 20 - 150 HZ, the curve of loudspeaker A in the low-frequency band is higher than that of loudspeaker B, which really means that under the input of the same low-frequency signal, loudspeaker A can generate a higher sound pressure level.

[0100] Sound pressure level is a physical quantity that describes the intensity of sound, and it is closely related to the subjective perception of sound by the human ear. In the low-frequency band, the curve of loudspeaker A is higher than that of loudspeaker B, indicating that under the same low-frequency signal, the vibration of loudspeaker A is more powerful, which can push more air molecules to generate a greater sound pressure fluctuation, so the sound felt by the human ear is stronger.

[0101] The embodiment of the present application also discloses an electronic device, including a housing and the loudspeaker of the above embodiment, and the loudspeaker is installed in the housing.

[0102] It should be noted that the electronic device of the embodiment of the present application may include, but is not limited to, mobile terminals or fixed terminals with acoustic transducers (such as loudspeaker 300) such as speakers, mobile phones, tablet computers, laptop computers, ultra-mobile personal computers (UMPCs), handheld computers, touch TVs, walkie-talkies, netbooks, POS machines, personal digital assistants (PDAs), wearable devices (such as earphones, Bluetooth glasses or virtual reality devices), etc.

[0103] Among them, the earphone can be a Bluetooth earphone, a sports earphone, a hanging ear Bluetooth earphone, an open Bluetooth earphone, a bone conduction earphone, etc. The speaker can be a Bluetooth speaker, a computer speaker, a desktop speaker, a KTV speaker, a wireless speaker, a portable speaker, an outdoor speaker, a waterproof speaker, a car speaker, etc.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered within the scope of the claims and the specification of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A basin stand, the basin stand is applied to a loudspeaker, characterized in that, The basin frame includes a first cavity and a second cavity that are interconnected through an annular connecting portion. The diameter of the first cavity is larger than that of the second cavity. The first cavity has an opening. At least one sound guiding channel is provided on the annular connecting portion. The sound guiding channel has a sound inlet hole located in the first cavity and a sound outlet hole located outside the first cavity and the second cavity. The sound guiding channel is a non-linear channel.

2. The basin stand according to claim 1, wherein, The orientation of the sound inlet hole is parallel to the axis direction of the first cavity, and the orientation of the sound outlet hole is perpendicular to the axis direction of the first cavity.

3. The basin stand according to claim 2, wherein, The sound guiding channel includes a first channel and a second channel. The annular connecting portion includes an annular connecting plate and a first boss provided on a surface of the annular connecting plate away from the first cavity. The first channel is provided along the thickness direction of the annular connecting plate, and one end of the first channel is the sound inlet hole, and the other end of the first channel communicates with the second channel. The second channel is provided along the length direction of the first boss, and the sound outlet hole is located at one end or both ends of the second channel.

4. The basin stand according to claim 3, characterized in that, Two second bosses are further provided on a surface of the annular connecting plate away from the first cavity. The first boss is arc-shaped. The two second bosses and the first boss enclose a first installation groove for installing a PCB board and a second installation groove for installing tuning paper. One or more tuning holes are provided on the annular connecting plate, and the positions of the one or more tuning holes correspond to the position of the second installation groove.

5. The basin stand according to any one of claims 1-4, characterized in that, The diameter of the basin frame is 20 mm - 50 mm, the aperture of the sound guiding channel is 0.5 mm - 3 mm, and the length of the sound guiding channel is 10 mm - 30 mm.

6. A loudspeaker, characterized in that, Comprising: The basin frame according to any one of claims 1 - 5; A vibration system covering the opening of the first cavity; A driving system provided in the second cavity. The driving system is used to drive the vibration system to vibrate to generate sound waves; A PCB board and tuning paper, both installed on a surface of the annular connecting portion away from the first cavity.

7. The loudspeaker according to claim 6, characterized in that, The vibration system includes: a sounding diaphragm and a voice coil. The voice coil is connected to the middle of a surface of the sounding diaphragm close to the second cavity, and the edge of the sounding diaphragm is connected to the basin frame.

8. The loudspeaker according to claim 7, characterized in that, The driving system includes: A washer; A magnetic member. A surface of the magnetic member close to the vibration system abuts against a surface of the washer away from the vibration system; A U cup having a groove with an opening facing the vibration system. A surface of the bottom of the groove close to the vibration system abuts against a surface of the magnetic member away from the vibration system, and the U cup is fixed in the second cavity; A first gap is provided between the circumferential outer side walls of the washer and the magnetic member and the circumferential inner side wall of the U cup; At least a part of the voice coil is located in the first gap.

9. The loudspeaker according to claim 7, characterized in that, The driving system includes: A washer, which is annular and has a first through hole in the middle; A magnetic member, which is annular and has a second through hole in the middle. A surface of the magnetic member close to the vibration system abuts against a surface of the washer away from the vibration system; The T-iron includes a bottom plate and a cylindrical boss; one side surface of the bottom plate close to the vibration system abuts against one side surface of the magnetic member away from the vibration system; The washer and the circumferential outer side wall of the magnetic member abut against the circumferential inner side wall of the second cavity; The cylindrical boss is located in the first through hole and the second through hole, and there is a second gap between the circumferential side wall of the cylindrical boss and the circumferential side walls of the first through hole and the second through hole; At least a part of the voice coil is located in the second gap.

10. The loudspeaker according to claim 6, characterized in that, It further includes a mounting seat, and a third through hole is provided on the mounting seat, and the circumferential inner side wall of the third through hole is connected to the circumferential outer side wall of the basin frame.

11. An electronic device, characterized in that, It includes a housing and the loudspeaker according to any one of claims 6-10, and the loudspeaker is installed in the housing.

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