Loudspeaker assembly and electronic device

Abstract

The application discloses a loudspeaker assembly and belongs to the technical field of electroacoustics. The loudspeaker assembly comprises a mounting shell, a resonance tube and an exciter. The resonance tube is arranged in a containing cavity in the mounting shell and is in communication with a first opening in the mounting shell, and the first opening is in communication with the external environment. A second opening in the side of the exciter is in communication with the resonance tube through a mounting hole and the containing cavity. In this way, when the exciter reciprocates at the mounting hole, the air in the containing cavity can be vibrated, the vibrating air is continuously discharged from the containing cavity to the external environment through the resonance tube and the first opening, and the air in the external environment is continuously sucked into the containing cavity through the first opening and the resonance tube. The air in the containing cavity in the mounting shell produces a resonance effect at a specific frequency, and the resonance effect can compensate for the response attenuation between the modal vibration frequency points of the sound-emitting flat plate at a low frequency band (i.e., the response between the modal vibration frequency points of the sound-emitting flat plate is smoother).

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electroacoustic technology, and particularly relates to a loudspeaker assembly and electronic equipment. BACKGROUND

[0002] With the continuous development of electronic technology and the continuous improvement of customer demand, electronic equipment is continuously developing in the direction of thinness. While giving consideration to thinness, the electronic equipment also needs to be provided with a loudspeaker assembly and other sound-emitting devices.

[0003] At present, the loudspeaker assembly generally comprises an exciter and a sound-emitting plate connected with the exciter. The exciter drives the sound-emitting plate to emit sound through modal vibration of the sound-emitting plate.

[0004] However, the frequency response of the sound-emitting plate mainly depends on the inherent modal vibration frequency points of the sound-emitting plate. In the low frequency band, the response attenuation degree between the modal vibration frequency points of the sound-emitting plate is large, which will cause large fluctuations of the low frequency band modal vibration frequency points, and further cause poor sound-emitting effect of the exciter driving the sound-emitting plate in the low frequency band. SUMMARY

[0005] Embodiments of the present application provide a loudspeaker assembly and electronic equipment. The technical solution can solve the problem of poor sound-emitting effect of the exciter driving the sound-emitting plate in the low frequency band in the prior art, and the technical solution is as follows:

[0006] In one aspect, a loudspeaker assembly is provided, and the loudspeaker assembly comprises:

[0007] a mounting shell, the mounting shell having a receiving cavity, a first opening and a mounting hole in communication with the receiving cavity;

[0008] a resonant tube fixed in the receiving cavity, and one end of the resonant tube being in communication with the first opening;

[0009] an exciter, part of the exciter being fixed in the mounting hole, and part of the exciter outside the mounting hole being used for connecting with a sound-emitting plate;

[0010] wherein a side surface of the exciter has a second opening, the second opening being in communication with the other end of the resonant tube through the receiving cavity.

[0011] In another aspect, an electronic equipment is provided, and the electronic equipment comprises:

[0012] a device body, and a loudspeaker assembly connected with the device body, the loudspeaker assembly being any one of the loudspeaker assemblies described above.

[0013] The technical solution provided by the embodiments of the present application has at least the following beneficial effects:

[0014] A loudspeaker assembly can include a mounting shell, a resonant tube and an exciter. When the loudspeaker assembly is integrated in an electronic device, a portion of the exciter in the loudspeaker assembly located outside a mounting hole of the mounting shell can be connected with one side of a sound emitting panel in the electronic device. When the exciter vibrates, the vibration of the exciter can be transmitted to the sound emitting panel to make the sound emitting panel vibrate and emit sound. In addition, by arranging the resonant tube in a receiving cavity in the mounting shell to communicate with a first opening in the mounting shell, the first opening communicates with the external environment. And a second opening on the side of the exciter communicates with the resonant tube through the mounting hole and the receiving cavity. In this way, when the exciter reciprocates at the mounting hole, the air in the receiving cavity can be vibrated, the vibrating air is continuously discharged from the receiving cavity to the external environment through the resonant tube and the first opening, and the air in the external environment is continuously sucked into the receiving cavity through the first opening and the resonant tube. So that the air in the receiving cavity in the mounting shell produces a resonance effect at a certain frequency, which can compensate for the response attenuation between the modal vibration frequency points of the sound emitting panel (i.e., make the response between the modal vibration frequency points of the sound emitting panel more smooth). That is, the sound emitting panel can have smaller fluctuations at the modal vibration frequency points in the low frequency range, and thus the exciter can have better effect on driving the sound emitting panel to emit sound in the low frequency range. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort based on these drawings.

[0016] Figure 1 is a cross-sectional view of a loudspeaker assembly provided by an embodiment of the present application;

[0017] Figure 2 is Figure 1 is a partial structure explosion schematic diagram of the loudspeaker assembly shown in

[0018] Figure 3 is a distribution schematic diagram of a resonant tube in a mounting shell provided by an embodiment of the present application;

[0019] Figure 4 is a top view of a loudspeaker assembly provided by an embodiment of the present application;

[0020] Figure 5 is a cross-sectional view of another loudspeaker assembly provided by an embodiment of the present application;

[0021] Figure 6 is a cross-sectional view of still another loudspeaker assembly provided by an embodiment of the present application;

[0022] Figure 7 is a sectional view of another loudspeaker assembly provided by an embodiment of the present application;

[0023] Figure 8 is a sectional view of a loudspeaker assembly provided by another embodiment of the present application;

[0024] Figure 9 is a connection diagram of an exciter in a loudspeaker assembly provided by an embodiment of the present application;

[0025] Figure 10 is a sectional view of an exciter provided by an embodiment of the present application;

[0026] Figure 11 is a connection diagram of an exciter in another loudspeaker assembly provided by an embodiment of the present application;

[0027] Figure 12 is a sectional view of another exciter provided by an embodiment of the present application;

[0028] Figure 13 is a structural block diagram of an electronic device provided by an embodiment of the present application;

[0029] Figure 14 is an effect diagram of a loudspeaker assembly installed on a projection screen in a laser television;

[0030] Figure 15 is another effect diagram of a loudspeaker assembly installed on a projection screen in a laser television;

[0031] Figure 16 is an effect diagram of a loudspeaker assembly installed in a liquid crystal television;

[0032] Figure 17 is another effect diagram of a loudspeaker assembly installed in a liquid crystal television.

[0033] The specific embodiments of the present application have been shown through the above-described drawings, and will be described in more detail hereinafter. The drawings and the written description are not intended to limit the scope of the present application in any way, but to explain the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in further detail below with reference to the drawings.

[0035] Reference should be made to Figure 1 , Figure 1 is a sectional view of a loudspeaker assembly provided by an embodiment of the present application, Figure 2 is Figure 1A partial structure explosion diagram of a loudspeaker assembly is shown in FIG. 1. The loudspeaker assembly 000 can include a mounting shell 100, a resonant tube 200, and an exciter 300.

[0036] The mounting shell 100 in the loudspeaker assembly 000 can have a receiving cavity 101, and a first opening 102 and a mounting hole 103 in communication with the receiving cavity 101.

[0037] The resonant tube 200 in the loudspeaker assembly 000 can be fixed in the receiving cavity 101 in the mounting shell 100, and one end of the resonant tube 200 can be in communication with the first opening 102 in the mounting shell 100.

[0038] Part of the exciter 300 in the loudspeaker assembly 000 can be fixed in the mounting hole 103 in the mounting shell 100, and part of the exciter 300 outside the mounting hole 103 in the mounting shell 100 can be used to connect with a sound emitting panel (not shown in the figure). The side of the exciter 300 can have a second opening 301, which can be in communication with the other end of the resonant tube 200 through the receiving cavity 101 in the mounting shell 100.

[0039] In the embodiment of the present application, when the loudspeaker assembly 000 is integrated in an electronic device, the part of the exciter 300 in the loudspeaker assembly 000 outside the mounting hole 103 in the mounting shell 100 can be connected with one side of the sound emitting panel in the electronic device. When the exciter 300 vibrates, the vibration of the exciter 300 can be transmitted to the sound emitting panel to make the sound emitting panel vibrate and emit sound. In addition, by arranging the resonant tube 200 in the receiving cavity 101 in the mounting shell 100 in communication with the first opening 102 in the mounting shell 100, which is in communication with the external environment, and the second opening 301 in the side of the exciter 300 in communication with the resonant tube 200 through the mounting hole 103 and the receiving cavity 101. In this way, when the exciter 300 reciprocates at the mounting hole 103 in the mounting shell 100, it can drive the air in the receiving cavity 101 to vibrate, and the vibrating air is continuously discharged from the receiving cavity 101 to the external environment through the resonant tube 200 and the first opening 102, and the air in the external environment is also continuously sucked into the receiving cavity 101 through the first opening 102 and the resonant tube 200. This makes the air in the receiving cavity 101 in the mounting shell 100 resonate at a certain frequency, which can compensate for the response attenuation between the modal vibration frequency points of the sound emitting panel in the low frequency band (i.e., make the response between the modal vibration frequency points of the sound emitting panel more smooth). That is, it can make the sound emitting panel have smaller fluctuations between the modal vibration frequency points in the low frequency band, and thus make the exciter 300 have better effect in driving the sound emitting panel to emit sound in the low frequency band.

[0040] In summary, the embodiment of the present application provides a loudspeaker assembly, which can include a mounting shell, a resonant tube and an exciter. When the loudspeaker assembly is integrated in an electronic device, the part of the exciter in the loudspeaker assembly located outside the mounting hole of the mounting shell can be connected with one side of a sound emitting panel in the electronic device. When the exciter vibrates, the vibration of the exciter can be transmitted to the sound emitting panel to make the sound emitting panel vibrate and emit sound. In addition, by arranging the resonant tube in the accommodating cavity in the mounting shell to communicate with the first opening in the mounting shell, the first opening communicates with the external environment. And the second opening on the side of the exciter communicates with the resonant tube through the mounting hole and the accommodating cavity. In this way, when the exciter reciprocates at the mounting hole, the air in the accommodating cavity can be vibrated, the vibrating air is continuously discharged from the accommodating cavity to the external environment through the resonant tube and the first opening, and the air in the external environment is continuously sucked into the accommodating cavity through the first opening and the resonant tube. So that the air in the accommodating cavity in the mounting shell produces a resonance effect at a certain frequency, which can compensate for the response attenuation between the modal vibration frequency points of the sound emitting panel in the low frequency band (i.e. make the response between the modal vibration frequency points of the sound emitting panel more smooth). That is, the sound emitting panel can have smaller fluctuations at the modal vibration frequency points in the low frequency band, thereby making the effect of the exciter for driving the sound emitting panel to emit sound in the low frequency band better.

[0041] Optionally, please refer to Figure 3 , Figure 3 is a distribution diagram of a resonant tube in a mounting shell provided by the embodiment of the present application. The resonant tube 200 in the loudspeaker assembly 000 can include at least two length intersecting sub-resonant tubes 201, wherein the at least two sub-resonant tubes 201 can be sequentially communicated. And the end of one of the two sub-resonant tubes 201 located at the outermost side in the resonant tube 200 can communicate with the first opening 102 in the mounting shell 100, and the end of the other sub-resonant tube 201 can communicate with the accommodating cavity 101 in the mounting shell 100. In this case, by arranging at least two length intersecting sub-resonant tubes 201 in the accommodating cavity 101 in the mounting shell 100, and making one of the at least two sub-resonant tubes 201 located at the outermost side communicate with the accommodating cavity 101 and the second opening 301, and the other sub-resonant tube 201 communicate with the first opening 102. In this way, the length of the resonant tube 200 can be ensured to be large, and the internal space of the accommodating cavity in the mounting shell 100 can be fully utilized, so that the volume of the mounting shell 100 is small, thereby facilitating the miniaturization of the loudspeaker assembly. In addition, by using a resonant tube 200 with a large length, the frequency of the air in the accommodating cavity 101 driven to vibrate by the vibration of the exciter 300 is further lower, thereby facilitating the exciter 300 to drive the sound emitting panel to obtain a low frequency response with a lower frequency.

[0042] In the embodiment of the present application, asFigure 3 As shown, at least two of the sub-resonance tubes 201 in the loudspeaker assembly 000 can include a first sub-resonance tube 201a and a second sub-resonance tube 201b distributed at edge positions of the mounting shell 100, and the length direction of the first sub-resonance tube 201a can intersect the length direction of the second sub-resonance tube 201b. In this case, by arranging the first sub-resonance tube 201a and the second sub-resonance tube 201b at the edge positions within the receiving cavity 101 in the mounting shell 100, the mounting positions of the two sub-resonance tubes do not interfere with the mounting position of the exciter 300, facilitating assembly of the various components. In addition, the lengths of the first sub-resonance tube 201a and the second sub-resonance tube 201b intersect, so that the length of the entire resonance tube 200 is relatively long, facilitating the exciter 300 to drive the sound-emitting flat plate to obtain a low-frequency response with a lower frequency. In an example, the length direction of the first sub-resonance tube 201a can be perpendicular to the length direction of the second sub-resonance tube 201b.

[0043] Optionally, please refer to Figure 3 and Figure 4 , Figure 4 is a top view of a loudspeaker assembly provided by an embodiment of the present application. The mounting shell 100 in the loudspeaker assembly 000 can have two oppositely arranged first side plates 104 and two oppositely arranged second side plates 105, the first sub-resonance tube 201a in the resonance tube 200 can be distributed adjacent to one of the two first side plates 104, and the second sub-resonance tube 201b in the resonance tube 200 can be distributed adjacent to one of the two second side plates 105. Wherein, one end of the first sub-resonance tube 201a away from the second sub-resonance tube 201b can be in communication with the receiving cavity 101, one end of the second sub-resonance tube 201b away from the first sub-resonance tube 201a can be in communication with the first opening 102, and the first opening 102 can be located on the other one of the two first side plates 104. In this case, by arranging two oppositely arranged first side plates 104 and two oppositely arranged second side plates 105 in the mounting shell 100, and distributing the first sub-resonance tube 201a adjacent to one of the first side plates 104 and the second sub-resonance tube 201b adjacent to one of the second side plates 105, and arranging the first opening 102 in the mounting shell 100 on the other one of the two oppositely arranged first side plates 104. In this way, the exciter 300 and the resonance tube 200 are reasonably distributed in the mounting shell 100, making full use of the internal space of the mounting shell 100.

[0044] In an embodiment of the present application, as Figure 4As shown, the mounting shell 100 in the loudspeaker assembly 000 can have a first baffle plate 106 and a second baffle plate 107 fixed in the accommodating cavity 101. The first baffle plate 106 can be arranged in parallel with the first side plate 104, and the first baffle plate 106 and the first side plate 104 can be used to enclose the first sub-resonance tube 201a. The second baffle plate 107 can be arranged in parallel with the second side plate 105, and the second baffle plate 107 and the second side plate 105 can be used to enclose the second sub-resonance tube 201b. In this case, by arranging the first baffle plate 106 and the first side plate 104 to enclose the first sub-resonance tube 201a, and arranging the second baffle plate 107 and the second side plate 105 to enclose the second sub-resonance tube 201b. In this way, the manufacturing process of the first sub-resonance tube 201a and the second sub-resonance tube 201b in the accommodating cavity 101 of the mounting shell 100 is simplified, and the space volume of the first sub-resonance tube 201a and the second sub-resonance tube 201b in the accommodating cavity 101 is small, facilitating the miniaturization of the mounting shell 100. It should be noted that in other possible implementations, a plurality of baffle plates can be used to individually splice to enclose the first sub-resonance tube 201a, or a plurality of baffle plates can be used to individually splice to enclose the second sub-resonance tube 201b, and the embodiments of the present application do not make specific limitations in this regard.

[0045] Optionally, as shown in Figure 4 The end of the first baffle plate 106 fixed in the accommodating cavity 101 of the mounting shell 100 away from the second baffle plate 107 can have a third opening a1 between the other one of the two second side plates 105. In this case, by arranging the third opening a1 between the second baffle plate 107 and the other one of the two oppositely arranged second side plates 105, the communication between the resonance tube 200 and the accommodating cavity 101 can be conveniently realized through the third opening a1. For example, when the exciter 300 reciprocates at the mounting hole 103 of the mounting shell 100, it can drive the air in the accommodating cavity 101 to vibrate. The vibrating air continuously discharges the air in the accommodating cavity 101 to the external environment through the third opening a1, the resonance tube 200 and the first opening 102, and absorbs the air in the external environment through the first opening 102, the resonance tube 200 and the third opening a1 into the accommodating cavity 101. The air in the accommodating cavity 101 of the mounting shell 100 produces a resonance effect at a certain frequency, which can compensate for the response attenuation between the modal vibration frequency points of the sound-emitting flat plate at the low frequency band (i.e., making the response between the modal vibration frequency points of the sound-emitting flat plate more smooth).

[0046] In the embodiments of the present application, please refer to Figure 5 , Figure 5is another cross-sectional view of a loudspeaker assembly provided by an embodiment of the present application. The loudspeaker assembly 000 can also include a support plate 400, which can have an avoiding hole 401. One side of the support plate 400 can be connected with the mounting shell 100, and the other side can be used to connect with the sound emitting plate. The part of the exciter 300 outside the mounting hole 103 in the mounting shell 100 can be used to connect with the sound emitting plate through the avoiding hole 401 in the support plate 400. In this case, after the loudspeaker assembly 000 is integrated in the electronic device, the support plate 400 is arranged between the sound emitting plate and the mounting shell 100, and is fixedly connected with the sound emitting plate and the mounting shell 100 respectively. In this way, the mounting shell 100 can be fixed, and when the exciter 300 drives the sound emitting plate to vibrate, the vibration transmitted to the mounting shell 100 is weakened through the support plate 400, so that the mounting shell 100 does not vibrate as much as possible. For example, a first buffer adhesive layer A1 can be arranged between the sound emitting plate and the support plate 400, and the first buffer adhesive layer A1 is used to bond the sound emitting plate and the support plate 400. For example, the first buffer adhesive layer A1 can be UVA glue or double-sided foam glue, and the embodiments of the present application do not make specific limitations on this.

[0047] Optionally, please refer to Figure 6 , Figure 6is a sectional view of another loudspeaker assembly provided by an embodiment of the present application. The support plate 400 in the loudspeaker assembly 000 can include a support plate body 402 and a connecting column 403 connected to one side of the support plate body 402. The side of the support plate body 402 away from the connecting column 403 can be used to connect with a sound emitting plate. The mounting shell 100 in the loudspeaker assembly 000 can also have a connecting through hole 108, at least part of the connecting column 403 can be located in the connecting through hole 108. The loudspeaker assembly 000 can further include a buffer 500 located between the connecting through hole 108 in the mounting shell 100 and the connecting column 403, and a fixing screw 600 connected to the end of the connecting column 403 away from the support plate body 402. The buffer 500 is fastened with the mounting shell 100 in the connecting through hole 108. In this case, by setting the connecting through hole 108 in the mounting shell 100, and setting the connecting column 403 in the connecting through hole 108, and setting the buffer 500 between the connecting through hole 108 and the connecting column 403. In this way, by connecting the fixing screw 600 with the connecting column 403 at the same time, the mounting shell 100 is pressed by the buffer 500 to achieve the fixation of the mounting shell 100 and the support plate body 402, and the buffer 500 can weaken the vibration transmitted to the mounting shell 100 through the support plate 400. In addition, by opening the connecting through hole 108 in the mounting shell 100, at least part of the connecting column 403, the buffer 500 and the fixing screw 600 can be hidden, which improves the appearance effect of the loudspeaker assembly 000. In addition, after the loudspeaker assembly 000 is integrated in an electronic device, the space volume of the electronic device occupied by the connecting column 403, the buffer 500 and the fixing screw 600 is reduced, which is beneficial to the miniaturization of the electronic device.

[0048] It should be noted that in other possible implementations, please refer to Figure 7 and Figure 8 , Figure 7 is a sectional view of another loudspeaker assembly provided by an embodiment of the present application, Figure 8 is a sectional view of a loudspeaker assembly provided by another embodiment of the present application. The second buffer adhesive layer A2 can also be directly set between the mounting shell 100 and the support plate 400, and the mounting shell 100 is connected with the support plate 400 through the second buffer adhesive layer A2 to achieve the fixation of the mounting shell 100. In addition, the second buffer adhesive layer A2 can effectively weaken the vibration transmitted to the mounting shell 100 through the support plate 400. For example, the second buffer adhesive layer A2 can be UVA glue or double-sided foam glue, and the embodiments of the present application do not make specific limitations on this.

[0049] In the embodiments of the present application, please refer to Figure 9 , Figure 9This is a schematic diagram of the connection of an exciter in a speaker assembly according to an embodiment of this application. The exciter 300 in the speaker assembly 000 may include: a fixed housing 302, a first elastic connector 303, a voice coil 304, a second elastic connector 305, and a magnetic component 306. The outer wall of the fixed housing 302 in the exciter 300 can be fixed in the mounting hole 103 in the mounting housing 100. The first elastic connector 303 can be fixedly connected to the inner wall of the fixed housing 302 and the outer wall of the voice coil 304, respectively. The second elastic connector 305 can be fixedly connected to the inner wall of the fixed housing 302 and the magnetic component 306, respectively. The magnetic component 306 can be used to drive the voice coil 304 to vibrate. The side wall of the fixed housing 302 in the exciter 300 may have a second opening 301, which communicates with the resonant tube 200 through the receiving cavity 101 in the mounting housing 100. In this configuration, when the voice coil 304 moves along its own axis, the first elastic connector 303 follows the voice coil 304 and undergoes elastic deformation along the axial direction of the voice coil 304. Furthermore, the first elastic connector 303 restricts the movement of the voice coil 304 in the radial direction, ensuring that the voice coil 304 does not collide with the magnetic component 306. Additionally, the second opening 301 on the side wall of the fixed housing 302 facilitates communication between the internal cavity of the exciter 300 and the receiving cavity 101 of the mounting housing 100, reducing airflow resistance between them. For example, the second opening 301 on the side wall of the fixed housing 302 can be an annular opening along the radial direction of the fixed housing 302, or it can be multiple openings spaced apart along the radial direction of the fixed housing 302; this embodiment does not impose specific limitations on this. It should be noted that the first elastic connector 304 is the elastic wave in the exciter 300, and the first elastic connector 305 can be made of any one of rubber, woven fabric, polyurethane (PU) and acrylonitrile butadiene styrene copolymer (ABS). This application embodiment does not make specific limitations on this.

[0050] Optional, such as Figure 9 As shown, the actuator 300 may further include a third elastic connector 307, which may be located between the first elastic connector 303 and the second elastic connector 305, and may be fixedly connected to the inner wall of the fixed housing 302 and the magnetic component 306, respectively. In this case, by providing the second elastic connector 305 and the third elastic connector 307, the magnetic component 306 in the actuator 300 can be effectively supported. That is, after the actuator 300 is installed in the electronic device, the magnetic component 306 in the actuator 300 can be prevented from undergoing severe downward deformation under its own gravity.

[0051] In the embodiments of the present application, as shown in Figure 9 The exciter 300 can further include an auxiliary connecting member 308. One side of the auxiliary connecting member 308 can be connected to the side of the voice coil 304 which is away from the magnetic component 306. The side of the auxiliary connecting member 308 which is away from the voice coil 304 can be used to connect to the sound plate. In this case, since the thickness of the side wall of the voice coil 304 is small. Therefore, by connecting the auxiliary connecting member 308 to the voice coil 304, the auxiliary connecting member 308 can effectively strengthen the structural strength of the voice coil 304 and improve the stability of the voice coil 304 during operation. In addition, when the loudspeaker assembly is integrated in the electronic device, the voice coil 304 in the exciter 300 is connected to the sound plate through the auxiliary connecting member 308, which increases the connection area of the exciter 300 and the sound plate, so that the effect of driving the sound plate to vibrate and sound by the exciter 300 is better.

[0052] In the present application, the voice coil 304 in the exciter 300 can include one sub-voice coil or two sub-voice coils. For example, please refer to Figure 9 and Figure 10 , Figure 10 is a cross-sectional view of an exciter provided by the embodiments of the present application. When the voice coil 304 in the exciter 300 includes one sub-voice coil, the sub-voice coil can be a first sub-voice coil 304a. The magnetic component 306 in the exciter 300 can include a first sub-magnetic component 3061 and a second sub-magnetic component 3062. At least part of the first sub-magnetic component 3061 can be annular, and the first sub-voice coil 304a in the exciter 300 can be located in the area surrounded by the first sub-magnetic component 3061, and the second sub-magnetic component 3062 can be located in the area surrounded by the first sub-voice coil 304a. In this case, by setting the first sub-voice coil 304a in the area surrounded by the first sub-magnetic component 3061 and the second sub-magnetic component 3062 in the area surrounded by the first sub-voice coil 304a. In this way, the first sub-magnetic component 3061 and the second sub-magnetic component 3062 are used to drive the first sub-voice coil 304a to vibrate.

[0053] For example, as shown in Figure 9 and Figure 10As shown, the first sub-magnetic component 3061 in the magnetic component 306 can include a first magnetic conductor B1, a second magnetic conductor B2, and a first magnet B3 located between and connected with the first magnetic conductor B1 and the second magnetic conductor B2. The first elastic connector 303 in the exciter 300 can be fixedly connected with the inner wall of the fixed shell 302 and the outer wall of the first sub-voice coil 304a respectively, the second elastic connector 305 can be fixedly connected with the inner wall of the fixed shell 302 and the second magnetic conductor B2 respectively, and the third elastic connector 307 can be fixedly connected with the inner wall of the fixed shell 302 and the first magnetic conductor B1 respectively. The first magnetic conductor B1 can be annular, and the first sub-voice coil 304a in the exciter 300 can be located in the area surrounded by the first magnetic conductor B1. The second sub-magnetic component 3062 in the magnetic component 306 can include a third magnetic conductor C1, a fourth magnetic conductor C2, and a second magnet C3 located between and connected with the third magnetic conductor C1 and the fourth magnetic conductor C2. The third magnetic conductor C1, the fourth magnetic conductor C2 and the second magnet C3 can all be located in the area surrounded by the first sub-voice coil 304a. In this case, the first magnetic conductor B1 and the third magnetic conductor C1 have a certain gap, i.e. the first magnetic gap. The first magnetic conductor B1, the second magnetic conductor B2, the third magnetic conductor C1 and the fourth magnetic conductor C2 can be used to guide the magnetic field generated by the first magnet B3 and the second magnet C3 into the first magnetic gap, so as to generate a stable magnetic field in the first magnetic gap. Part of the first sub-voice coil 304a can be located in the first magnetic gap, and the first sub-voice coil 304a can vibrate along its axis direction under the action of the magnetic field.

[0054] For example, refer to Figure 11 and Figure 12 , Figure 11 is another connection diagram of an exciter in a loudspeaker assembly provided by the embodiments of the present application, Figure 12is a sectional view of another exciter provided by an embodiment of the present application. When the voice coil 304 in the exciter 300 includes two sub-voice coils, the two sub-voice coils can include a first sub-voice coil 304a and a second sub-voice coil 304b, the diameter of the second sub-voice coil 304b can be smaller than the diameter of the first sub-voice coil 304a, the second sub-voice coil 304b can be located in the area enclosed by the first sub-voice coil 304a, and the second sub-voice coil 304b can be connected with the first sub-voice coil 304a through the auxiliary connecting member 308. The magnetic component 306 in the exciter 300 can further include a third sub-magnetic component 3063, the third sub-magnetic component 3063 can be located in the area enclosed by the first sub-voice coil 304a and outside the area enclosed by the second sub-voice coil 304b in the exciter 300. In this way, since the diameter of the first sub-voice coil 304a is larger than the diameter of the second sub-voice coil 304b, the size and mass of the first sub-voice coil 304a are larger. Therefore, the driving of the first sub-voice coil 304a by the magnetic component 306 can obtain a low-frequency response with a lower frequency. Since the diameter of the second sub-voice coil 304b is smaller than the diameter of the first sub-voice coil 304a, the size and mass of the second sub-voice coil 304b are relatively small. In this way, the driving of the second sub-voice coil 304b by the magnetic component 306 can obtain a high-frequency response with a higher frequency. Further, the driving of the first sub-voice coil 304a and the second sub-voice coil 304b by the magnetic component 306 can realize sound generation in the full frequency band.

[0055] As shown in FIG. 3, the exciter 300 can include a voice coil 304, a magnetic component 306, and a shell 302. The voice coil 304 can be located in the area enclosed by the magnetic component 306. The voice coil 304 can include a first sub-voice coil 304a and a second sub-voice coil 304b. The first sub-voice coil 304a can be connected with the second sub-voice coil 304b through an auxiliary connecting member 308. The magnetic component 306 can include a first sub-magnetic component 3061, a second sub-magnetic component 3062, and a third sub-magnetic component 3063. The first sub-magnetic component 3061 can include a first magnet C1 and a second magnet C2. The second sub-magnetic component 3062 can include a third magnet D3 and a fourth magnet D4. The third sub-magnetic component 3063 can include a fifth magnet guide D1, a sixth magnet guide D2, and a third magnet D3 located between and connected with the fifth magnet guide D1 and the sixth magnet guide D2. Figure 10 and Figure 11 The third sub-magnetic component 3063 can include a fifth magnet guide D1, a sixth magnet guide D2, and a third magnet D3 located between and connected with the fifth magnet guide D1 and the sixth magnet guide D2. The fifth magnet guide D1 can be annular. The second sub-voice coil 304b in the exciter 300 can be located in the area enclosed by the fifth magnet guide D1. In this way, the fifth magnet guide D1 and the third magnet guide C1 have a certain gap, i.e., a second magnetic gap. The fifth magnet guide D1, the sixth magnet guide D2, the third magnet guide C1, and the fourth magnet guide C2 can be used to guide the magnetic field generated by the second magnet C3 and the third magnet D3 into the second magnetic gap to generate a stable magnetic field in the second magnetic gap. Part of the second sub-voice coil 304b can be located in the second magnetic gap, and the second sub-voice coil 304b can vibrate along its own axis direction under the action of the magnetic field. That is, the first sub-voice coil 304a and the second sub-voice coil 304b can multiplex the third sub-magnetic component 3063, effectively reducing the number of magnetic components 306 required to be arranged in the exciter 300, and further effectively reducing the internal space of the loudspeaker assembly occupied by the exciter 300 after the exciter 300 is integrated into the loudspeaker assembly.

[0056] It should be noted that, as Figure 11As shown, when the second sub voice coil 304b is connected with the first sub voice coil 304a through the auxiliary connecting member 308, the auxiliary connecting member 308 has a ring-shaped groove 308a, and the orthographic projection of the groove 308a on the auxiliary connecting member 308 can be located between the orthographic projection of the first sub voice coil 304a on the auxiliary connecting member 308 and the orthographic projection of the second sub voice coil 304b on the auxiliary connecting member 308. In this way, by arranging the groove 308a on the auxiliary connecting member 308, a certain buffering effect can be provided when the first sub voice coil 304a vibrates and the second sub voice coil 304b vibrates, that is, the mutual interference between the first sub voice coil 304a and the second sub voice coil 304b when vibrating can be effectively prevented, and the full-frequency sound production effect of the exciter 300 can be affected.

[0057] Optionally, the second magnetic guide B2, the fourth magnetic guide C2 and the sixth magnetic guide D2 in the magnetic component 306 can be an integrally formed plate-shaped magnetic guide. In this way, the integrally formed plate-shaped magnetic guide is convenient to manufacture in actual process. It should be noted that in other possible implementation manners, the second magnetic guide B2, the fourth magnetic guide C2 and the sixth magnetic guide D2 can also be respectively manufactured separately, and then the three parts are connected into an integrally formed plate-shaped magnetic guide, and the present application does not make specific limitation on this. The plate-shaped magnetic guide and the first magnetic guide B1 are respectively supported by the second elastic connecting member 305 and the third elastic connecting member 307, and the exciter 300 is assembled with the mounting shell 100 through the fixed shell 302 connected with the second elastic connecting member 305 and the third elastic connecting member 307. The first magnetic guide B1 and the plate-shaped magnetic guide do not need to be fixed by other fixing structures, and thus the first magnetic guide B1 and the plate-shaped magnetic guide can be vibrated in inertia, so that the first sub voice coil 304a can obtain better low-frequency response.

[0058] In the present application, the first sub voice coil 304a and the second sub voice coil 304b can each include a ring-shaped voice coil skeleton and a conductive coil (not shown in the figure), and the conductive coil can be wound on the outer side surface of the voice coil skeleton. The conductive coil is used to receive an audio signal, and when the conductive coil passes through an audio current, the conductive coil generates an electromagnetic force under the magnetic field in the magnetic air gap, so that the voice coil skeleton moves along the axis direction of itself.

[0059] In summary, the loudspeaker assembly provided by the embodiments of the present application can include a mounting shell, a resonant tube and an exciter. When the loudspeaker assembly is integrated in an electronic device, the part of the exciter in the loudspeaker assembly located outside the mounting hole of the mounting shell can be connected with one side of a sound emitting panel in the electronic device. When the exciter vibrates, the vibration of the exciter can be transmitted to the sound emitting panel to make the sound emitting panel vibrate and emit sound. In addition, by arranging the resonant tube in the accommodating cavity in the mounting shell to communicate with the first opening in the mounting shell, the first opening communicates with the external environment. And the second opening on the side of the exciter communicates with the resonant tube through the mounting hole and the accommodating cavity. In this way, when the exciter reciprocates at the mounting hole, the air in the accommodating cavity can be vibrated, the vibrating air is continuously discharged from the accommodating cavity to the external environment through the resonant tube and the first opening, and the air in the external environment is continuously sucked into the accommodating cavity through the first opening and the resonant tube. So that the air in the accommodating cavity in the mounting shell produces a resonance effect at a specific frequency, which can compensate for the response attenuation between the modal vibration frequency points of the sound emitting panel in the low frequency band (i.e. make the response between the modal vibration frequency points of the sound emitting panel more smooth). That is, the sound emitting panel can have smaller fluctuations at the modal vibration frequency points in the low frequency band, and thus the exciter can have better effect on driving the sound emitting panel to emit sound in the low frequency band.

[0060] The embodiments of the present application also provide an electronic device, which can be a liquid crystal television, a plasma television and a laser television. Please refer to Figure 13 , Figure 13 is a structural block diagram of an electronic device provided by the embodiments of the present application. The electronic device 00 can include a device body 001 and a loudspeaker assembly 000 connected with the device body 001. The loudspeaker assembly 000 can be the loudspeaker assembly given in the above embodiments.

[0061] For example, when the electronic device is a laser television, please refer to Figure 14 and Figure 15 , Figure 14 is an effect diagram of the loudspeaker assembly installed on the projection screen of the laser television, Figure 15is another effect diagram of the loudspeaker assembly installed on the projection screen in the laser television. The sound-emitting panel 002 in the electronic device can include a first skin 002a, a second skin 002b, and a honeycomb core layer 002c between the first skin 002a and the second skin 002b. The sound-emitting panel 002 has mounting slots E1 distributed on the second skin 002b and the honeycomb core layer 002c, the exciter 300 in the loudspeaker assembly 000 can be fixed in the mounting slots E1, and one side of the exciter 300 is connected with the first skin 002a. In this way, the overall thickness of the loudspeaker assembly 000 and the sound-emitting panel 002 can be effectively reduced, and the miniaturization design of the electronic device 00 is facilitated. In an example, the sound-emitting panel 002 can be a paper core honeycomb panel, which has the characteristics of small weight and high strength. It should be noted that in other possible implementations, the mounting slots can not be provided on the sound-emitting panel 002, and one side of the exciter 300 in the loudspeaker assembly 000 can be directly connected with the side of the second skin 002b away from the honeycomb core layer 002c.

[0062] In an example, when the electronic device is a liquid crystal television, please refer to Figure 16 and Figure 17 , Figure 16 is an effect diagram of the loudspeaker assembly installed in the liquid crystal television, Figure 17 is another effect diagram of the loudspeaker assembly installed in the liquid crystal television. The sound-emitting panel 002 in the electronic device can include a display panel 002d and a metal back plate 002e connected with the back of the display panel 002d. The exciter 300 in the loudspeaker assembly 000 can be connected with the side of the metal back plate 002e away from the display panel 002d. In this way, the exciter 300 drives the metal back plate 002e and the display panel 002d to vibrate and emit sound during the vibration process.

[0063] In this application, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. The term "multiple" refers to two or more, unless otherwise explicitly limited.

[0064] The above description is only optional embodiments of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A loudspeaker assembly comprising: The loudspeaker assembly comprises: a mounting shell having a receiving cavity, a first opening and a mounting hole in communication with the receiving cavity; a resonant tube fixed in the receiving cavity, and one end of the resonant tube in communication with the first opening; an exciter, part of which is fixed in the mounting hole, and part of which is used to connect with a sound plate; wherein the side of the exciter has a second opening in communication with the other end of the resonant tube through the receiving cavity; the resonant tube comprises at least two lengthwise intersecting sub-resonant tubes, the at least two sub-resonant tubes are in sequence communication, and the end of one of the two outermost sub-resonant tubes in the resonant tube is in communication with the first opening, and the end of the other sub-resonant tube is in communication with the receiving cavity; the loudspeaker assembly further comprises a support plate having an avoiding hole, one side of the support plate is connected with the mounting shell, and the other side is used to connect with the sound plate, and part of the exciter outside the mounting hole is used to connect with the sound plate through the avoiding hole; the exciter comprises a fixed shell, a first elastic connecting member, a voice coil, a second elastic connecting member and a magnetic component, the outer wall of the fixed shell is fixed in the mounting hole, the first elastic connecting member is fixedly connected with the inner wall of the fixed shell and the outer wall of the voice coil respectively, the second elastic connecting member is fixedly connected with the inner wall of the fixed shell and the magnetic component respectively, and the magnetic component is used to drive the voice coil to vibrate; wherein the side wall of the fixed shell has the second opening.

2. The speaker assembly of claim 1, wherein, The at least two sub-resonant tubes comprise a first sub-resonant tube and a second sub-resonant tube distributed at the edge position of the mounting shell, and the length direction of the first sub-resonant tube intersects with the length direction of the second sub-resonant tube.

3. The loudspeaker assembly of claim 2, wherein, The mounting shell has two first side plates arranged oppositely and two second side plates arranged oppositely, the first sub-resonant tube is distributed adjacent to one of the first side plates, and the second sub-resonant tube is distributed adjacent to one of the second side plates; wherein the end of the first sub-resonant tube away from the second sub-resonant tube is in communication with the receiving cavity, the end of the second sub-resonant tube away from the first sub-resonant tube is in communication with the first opening, and the first opening is located on the other first side plate.

4. The loudspeaker assembly of claim 3, wherein, The mounting shell has a first baffle and a second baffle fixed in the receiving cavity, and the end of the first baffle is fixedly connected with the end of the second baffle; the first baffle is distributed in parallel with the first side plate, and the first baffle and the first side plate are used to enclose the first sub-resonant tube; the second baffle is distributed in parallel with the second side plate, and the second baffle and the second side plate are used to enclose the second sub-resonant tube.

5. The loudspeaker assembly of claim 4, wherein, the end of the first baffle away from the second baffle has a third opening between the other second side plate.

6. The speaker assembly of claim 1, wherein, The support plate comprises a support plate body and a connecting column fixedly connected to one side of the support plate body, one side of the support plate body away from the connecting column being used to connect with the sound production flat plate, the mounting shell having a connecting through hole, at least part of the connecting column being located in the connecting through hole; The loudspeaker assembly further comprises a buffer between the connecting through hole and the connecting column, and a fixing screw connected to one end of the connecting column away from the support plate body, the buffer being tightly connected with the mounting shell in the connecting through hole.

7. An electronic device, comprising: Comprise: A device body and a loudspeaker assembly connected to the device body, the loudspeaker assembly being any one of claims 1 to 6. A device body and a loudspeaker assembly connected to the device body, the loudspeaker assembly being any one of claims 1 to 6.

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