This application claims priority to Chinese Patent Application No. 201910883154.2, filed with the China National Intellectual Property Administration on Sep. 18, 2019 and entitled “SOUNDING COMPONENT AND ELECTRONIC DEVICE”, which is incorporated herein by reference in its entirety.
This application relates to the field of terminal technologies, and in particular, to a sounding component and an electronic device.
With development of electronic technologies, a mobile phone is indispensable in people's daily life, and a speaker (for example, a moving coil speaker, a piezoelectric speaker, or another sound playing component) is an indispensable component of the mobile phone. The speaker is a transducer (transducer) that converts electric energy into sound energy, and specifically converts an electrical signal of an amplifier into mechanical vibration of a diaphragm, so that surrounding air changes in density, to change a sound wave for sounding.
Currently, when a speaker is disposed in a mobile phone, to achieve a large low-frequency extension of the speaker, the speaker uses a half-open rear cavity structure. Specifically, a rear sound cavity of the speaker is connected to inner space of the mobile phone. In this way, a size of the rear sound cavity of the speaker increases, and a low frequency of the mobile phone is less than 650 Hz.
Then, after the rear sound cavity of the speaker is connected to the inner space of the mobile phone, w % ben the speaker works, an airflow generated due to vibration of a diaphragm of the speaker enters the mobile phone through the rear sound cavity and flows in the mobile phone. In this case, a relatively thin rear cover is prone to vibrate. Consequently, a user has a strong vibration feeling when holding the mobile phone by a hand.
Embodiments of this application provide a sounding component and an electronic device, to reduce a rate at which an airflow generated by the sounding component flows in the electronic device, reduce airflow impact on a housing of the electronic device, damp vibration of the housing of the electronic device, and improve user experience in holding the electronic device by a hand.
A first aspect of embodiments of this application provides a sounding component, applied to an electronic device having a cavity and a sound hole. The sounding component includes a box and a sounding unit disposed in the box, the box has a front sound cavity and a rear sound cavity that are independent of each other, one end of the sounding unit is located in the front sound cavity, and the other end of the sounding unit is located in the rear sound cavity.
A sound output hole and a leakage hole are disposed in the box, the front sound cavity is connected to the sound hole of the electronic device through the sound output hole, and the rear sound cavity is connected to the cavity of the electronic device through the leakage hole.
The sounding component further includes a damping component. The damping component is located in the rear sound cavity and disposed near the leakage hole, and the damping component is configured to form an airflow channel that connects the rear sound cavity to the cavity of the electronic device.
The damping component is disposed at a position that is in the rear sound cavity and that is close to the leakage hole. An airflow generated due to vibration of a diaphragm of the sounding unit in the rear sound cavity needs to pass through the damping component before entering the cavity of the electronic device. When the airflow passes through the damping component, the damping component can slow down the airflow, so that the airflow enters the cavity inside the electronic device at a low flow rate. This weakens impact of the airflow on a relatively thin rear cover of the electronic device, decreases amplitude, damps or alleviates vibration of the rear cover of the electronic device, and improves user experience in holding the electronic device by a hand.
In a possible implementation, the damping component includes at least one guide board, at least one end of the guide board is connected to an inner wall of the box, and the guide board and a partial inner wall of the box form the airflow channel through enclosing.
The guide board is included. The airflow channel formed by the guide board and the partial inner wall of the box through enclosing extends a path along which an airflow reaches the leakage hole. When the airflow in the rear sound cavity reaches the leakage hole, the airflow enters the cavity in the mobile phone at a low flow rate. This weakens impact on the rear cover, decreases amplitude, damps housing vibration of the rear cover, and improves user handhold experience. When an airflow generated due to vibration of a diaphragm of the sounding unit in the rear sound cavity passes through an impeding layer, the impeding layer reduces a flow rate of the airflow. When the airflow in the rear sound cavity reaches the leakage hole, the airflow enters the cavity in the mobile phone at a low flow rate. This weakens impact on the rear cover, decreases amplitude, and damps housing vibration of the rear cover.
In a possible implementation, the damping component includes a first guide board and a second guide board, and the first guide board is close to the leakage hole.
One end of the first guide board is connected to an inner wall that is of the box and that is close to a display screen of the electronic device, and the other end of the first guide board is suspended.
One end of the second guide board is connected to an inner wall that is of the box and that is close to the rear cover of the electronic device, and the other end of the second guide board is suspended.
An airflow channel formed by using the first guide board and the second guide board has a longer path and a larger airflow slowdown effect, so that an airflow can enter the cavity of the electronic device at a lower flow rate.
In a possible implementation, the damping component includes a first guide board and a second guide board, and the first guide board is close to the leakage hole.
One end of the first guide board is connected to an inner wall that is of the box and that is close to a display screen of the electronic device, and the other end of the first guide board is connected to an inner wall that is of the box and that is close to the rear cover of the electronic device.
One end of the second guide board is connected to the inner wall that is of the box and that is close to the rear cover of the electronic device, and the other end of the second guide board is connected to the inner wall that is of the box and that is close to the display screen of the electronic device.
A first circulation port is disposed in the first guide board, a second circulation port is disposed in the second guide board, the first circulation port is disposed away from the leakage hole, and the second circulation port is disposed away from the first circulation port.
In a possible implementation, the damping component includes at least one waterproof breathable film, and the waterproof breathable film is disposed on the leakage hole.
The waterproof breathable film impedes an airflow, and a transmission rate of the airflow is reduced under impeding of the waterproof breathable film, so that the airflow enters the electronic device at a low flow rate. This weakens airflow impact on the rear cover of the electronic device, decreases amplitude, damps vibration of the rear cover of the electronic device, and improves user experience in holding the electronic device by a hand. In addition, when the damping component includes the waterproof breathable film, the waterproof breathable film may play a waterproof role. When water vapor or liquid exists in the cavity in the electronic device, the water vapor or liquid does not enter the rear sound cavity due to impeding of the waterproof breathable film, thereby avoiding impact of the water vapor or liquid on performance of the sounding unit.
In a possible implementation, the damping component includes at least one mesh, and the mesh is disposed on the leakage hole, or the mesh is connected to inner walls of the box.
The mesh is disposed. Therefore, an airflow can be slowed down, so that the airflow enters the cavity of the electronic device at a low flow rate. Therefore, airflow impact on the rear cover of the electronic device weakens, and amplitude decreases, so that vibration of the rear cover is damped. In addition, the mesh is disposed near the leakage hole, so that the mesh can play a dustproof role, to prevent foreign matter or dust in the cavity of the mobile phone from entering the rear sound cavity.
In a possible implementation, the damping component includes a first mesh and a second mesh, the first mesh is disposed on the leakage hole, the second mesh is connected to the inner walls of the box, and there is buffer space between the first mesh and the second mesh.
The two meshes are disposed, and the buffer space exists between the two meshes. An airflow formed in the rear sound cavity needs to pass through the two meshes and the buffer space before entering the cavity of the electronic device. This reduces a flow rate at which the airflow enters the cavity of the electronic device, weakens airflow impact on the rear cover of the mobile phone, and damps amplitude decreases, so that vibration of the rear cover.
In a possible implementation, a sound absorbing material is disposed in the buffer space, and the sound absorbing material includes one or more of a sound absorbing particle, sound absorbing cotton, and a sound absorbing board.
The sound absorbing material is disposed in the buffer space. After an airflow enters the buffer space, the sound absorbing material impedes the airflow to a specific degree, and the airflow rubs against the sound absorbing material in a transmission process. The rubbing enables partial sound energy to be converted into heat energy to be absorbed by the sound absorbing material. This consumes the sound energy of the airflow, decreases a flow rate of the airflow; and ensures that the airflow enters the cavity of the mobile phone at a low flow rate. Therefore, airflow impact on the rear cover weakens, the rear cover is not prone to housing vibration, and a user is not prone to have a vibration feeling when holding the mobile phone by a hand.
In a possible implementation, at least one partition board is disposed in the box, the partition board partitions inner space of the box into the front sound cavity and the rear sound cavity, and the sounding unit is sleeved onto the partition board.
The inside of the box of the sounding component may be partitioned into the front sound cavity and the rear sound cavity by using the partition board. In addition, installation of the sounding unit in the box may be implemented due to disposition of the partition board.
A second aspect of embodiments of this application provides an electronic device, including at least a display screen, a middle frame, a rear cover, and the sounding component according to any one of the first aspect or the possible implementations of the first aspect. The display screen and the rear cover are respectively located on two sides of the middle frame, the sounding component is located in a cavity formed by the rear cover and the middle frame through enclosing, a front sound cavity of the sounding component is connected to a sound hole disposed in a bezel of the middle frame, and a rear sound cavity of the sounding component is connected to the cavity.
The sounding component is included. This resolves a problem that a user has a strong vibration feeling when holding the electronic device by a hand because the rear cover of the electronic device vibrates after a sound playing function of the electronic device is enabled, and improves handhold experience of the user.
A third aspect of embodiments of this application provides an electronic device, including at least a display screen, a rear cover, and the sounding component according to any one of the first aspect or the possible implementations of the first aspect. The sounding component is located in a cavity formed by the rear cover and the display screen through enclosing, a front sound cavity of the sounding component is connected to a sound hole disposed in a side bezel of the rear cover, and a rear sound cavity of the sounding component is connected to the cavity.
The sounding component is included. This resolves a problem that a user has a strong vibration feeling when holding the electronic device by a hand because the rear cover of the electronic device vibrates after a sound playing function of the electronic device is enabled, and improves handhold experience of the user.
In a possible implementation, the electronic device further includes a sealing member. The sealing member is located between outer edges of the sound output hole and the sound hole, and the sealing member separates the front sound cavity of the sounding component from the cavity in the electronic device.
The front sound cavity is independent of and is not connected to the cavity inside the mobile phone, and an airflow generated due to vibration of a diaphragm of the sounding unit is transmitted outward through the sound output hole and a first sound hole. This resolves a problem of a poor sound playing effect of the electronic device caused because the airflow generated by the sounding unit enters the cavity inside the electronic device after passing through the sound output hole.
Reference numerals in the drawings are described as follows:
Terms used in implementations of this application are merely used to explain specific embodiments of this application, but are not intended to limit this application. The following describes the implementations in embodiments of this application in detail with reference to accompanying drawings.
An embodiment of this application provides an electronic device, including but not limited to a mobile or fixed terminal having a sound playing function, such as a mobile phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a handheld computer, a walkie-talkie, a netbook, a POS terminal, a personal digital assistant (personal digital assistant, PDA), an event data recorder, a wearable device, a virtual reality device, a Bluetooth speaker/headset, or a factory-installed vehicle component.
In this embodiment of this application, a mobile phone 100 is used as the electronic device as an example for description.
In this embodiment of this application, when the battery 40 is disposed on the middle frame 20, for example, a battery compartment may be disposed on the surface that is of the middle frame 20 and that faces the rear cover 60, and the battery 40 is installed in the battery compartment on the middle frame 20 (shown by a dashed box in
In this embodiment of this application, the display screen 10 may be an organic light-emitting diode (Organic Light-Emitting Diode, OLED) display, or may be a liquid crystal display (Liquid Crystal Display. LCD). It should be understood that the display screen 10 may include a display and a touch component. The display is configured to output display content to a user, and the touch component is configured to receive a touch event entered by the user on the display screen 10.
In this embodiment of this application, the rear cover 60 may be a metal cover, may be a glass cover, may be a plastic cover, or may be a ceramic cover. In this embodiment of this application, a material of the rear cover 60 is not limited.
In this embodiment of this application, as shown in
A material of the middle metal plate 25 may be aluminum or an aluminum alloy, or a material of the middle metal plate 25 may be a stainless steel material. It should be noted that the material of the middle metal plate 25 includes but is not limited to the foregoing materials.
The bezels (the top bezel 24, the bottom bezel 22, the left bezel 23, and the right bezel 21) may be metal bezels, may be glass bezels, or may be plastic bezels or ceramic bezels.
It should be noted that in some other examples, the mobile phone 100 may include the display screen 10 and a rear cover, and the rear cover may be a unibody (Unibody) rear cover formed by the rear cover 60 and the bezel (that is, a bezel formed by the top bezel 24, the bottom bezel 22, the left bezel 23, and the right bezel 21) in
It may be understood that the structure shown in this embodiment of this application does not constitute a specific limitation on the mobile phone 100. In some other embodiments of this application, the mobile phone 100 may include more or fewer components than those shown in the figure, or some components may be combined, or some components may be split, or different component arrangements may be used. For example, the mobile phone 100 may further include components such as the camera (for example, a front-facing camera and a rear-facing camera) and a flash.
The following separately describes a structure of the mobile phone 100 in a scenario 1, a scenario 2, and a scenario 3 by using the structure of the mobile phone shown in
Scenario 1
In an embodiment of this application, to implement a sound playing function of the mobile phone 100, as shown in
In this embodiment of this application, a microphone (not shown) is further disposed in the mobile phone 100. The microphone is configured to convert a sound signal into an electrical signal. When making a call or sending a voice message, a user may make a sound by closing to the microphone, to input a sound signal to the microphone. In this embodiment of this application, as shown in
It should be understood that disposition positions of the first sound hole 221, the second sound hole 223, and the power interface 222 include but are not limited to the positions in the bottom bezel 22 shown in
In this embodiment of this application, the sounding component 50 and the microphone may be electrically connected to the processor on the circuit board 30 by using an audio module, so that the sounding component 50, the microphone, the audio module, and the processor implement an audio function, such as music playing and recording. The audio module may be disposed in the processor, or some functions of the audio module may be disposed in the processor. The audio module may convert digital audio information into analog audio signal output. The audio module is also configured to convert analog audio input into a digital audio signal, and may be further configured to encode and decode an audio signal.
In this embodiment of this application,
In this embodiment of this application, as shown in
In this embodiment of this application, the sounding unit 52 may be a speaker (Speaker). For example, the sounding unit 52 may include a voice coil (namely, a coil), a magnet, and a diaphragm A sounding principle is as follows: A current flows through the voice coil, so that a magnetic field generated by the voice coil changes, a magnetic force between the magnet and the voice coil changes, and a distance between the magnet and the voice coil also changes. The diaphragm is driven to vibrate for sounding. In this embodiment of this application, a sounding unit 52 that has larger amplitude or can generate a larger driving force may be selected, to achieve a better sound playing effect. It should be noted that the sounding unit 52 includes without limiting to the voice coil, the magnet, and the diaphragm, and may further include a support component and a positioning component.
In this embodiment of this application, as shown in
In this embodiment of this application, when the sound output hole 5111 is connected to the first sound hole 221, to prevent the front sound cavity 511 from being connected to the cavity 101 inside the mobile phone 100, as shown in
In this embodiment of this application, the sealing member 513 may be a sealing ring, or the sealing member 513 may be a sealing adhesive. When the sealing adhesive is used, the sealing adhesive not only plays a sealing role, but also fastens the box 51 to the bottom bezel 22. In addition, in this embodiment of this application, w % ben the sealing member 513 is disposed between the outer edge of the sound output hole 5111 in the box 51 and the bottom bezel 22, external water vapor or an external impurity does not enter the mobile phone 100 due to impeding of the sealing member 513.
In this embodiment of this application, to increase a size of the rear sound cavity 512 to achieve a better low-frequency effect of the sounding component 50, the leakage hole 5121 that can connect the rear sound cavity 512 to the cavity 101 inside the mobile phone 100 is disposed in the box 51. The rear sound cavity 512 of the sounding component 50 is connected to the cavity 101 inside the mobile phone 100, and the cavity 101 inside the mobile phone 100 can be used as an extension of the rear sound cavity 512 of the sounding component 50, so that the size of the rear sound cavity 512 of the sounding component 50 increases. When the rear sound cavity 512 increases, acoustic impedance is smaller, and a low frequency is more prone to appear. This ensures that a low frequency of the sounding component 50 is low (<650 Hz), a low-frequency extension is large, dynamic performance is good, and power consumption is low.
In this embodiment of this application, the cavity 101 inside the mobile phone 100 is specifically a cavity jointly formed through enclosing by an internal surface of the rear cover 60, the surface that is of the middle metal plate 25 and that faces the rear cover 60, and an inner surface of a bezel located between the rear cover 60 and the middle metal plate 25. When the cavity in the box 51 is partitioned into the front sound cavity 511 and the rear sound cavity 512, specifically, the cavity of the box 51 may be partitioned into the front sound cavity 511 and the rear sound cavity 512 by using a horizontal partition board 515 and a vertical partition board 514 in
When the leakage hole 5121 is disposed in the box 51, an airflow generated due to vibration of the diaphragm of the sounding unit 52 acts on the rear cover 60 through the leakage hole 5121, and the relatively thin rear cover 60 is prone to housing vibration under the action of the airflow. Consequently, a user has a strong vibration feeling when holding the mobile phone 100 by a hand. This is not conducive to user experience.
Based on the foregoing description, in this embodiment of this application, the sounding component 50 may further include a damping component 53, to damp vibration of the rear cover 60 caused due to an action of an airflow generated by the sounding component 50 on the rear cover 60. The damping component 53 may be disposed near the leakage hole 5121. For example, the damping component 53 may be disposed in the rear sound cavity 512 and close to the leakage hole 5121, or the damping component 53 may be disposed on the leakage hole 5121. In this embodiment of this application, the damping component 53 may form an airflow channel (shown by a dashed arrow in
Therefore, according to the electronic device provided in this embodiment of this application, the sounding component 50 further includes the damping component 53, and the damping component 53 is disposed near the leakage hole 5121. The damping component 53 can slow down an airflow in the rear sound cavity 512, so that the airflow enters the cavity 101 inside the mobile phone 100 at a low flow rate through the leakage hole 5121. After the airflow enters the cavity 101 inside the mobile phone 100, impact on the relatively thin rear cover 60 weakens, and amplitude decreases, and housing vibration of the rear cover 60 is damped. A user is not prone to have a vibration feeling when holding the mobile phone 100 by a hand, and therefore user handhold experience is improved. According to the electronic device provided in this embodiment of this application, housing vibration is damped on a basis of ensuring that a low frequency extension of the sounding component 50 is large. This resolves a problem that a user has a strong vibration feeling when holding the mobile phone 100 by a hand because housing vibration occurs on a rear cover 60 of an existing mobile phone 100 due to airflow impact.
In a possible implementation, in this embodiment of this application, the damping component 53 may include at least one guide board. For example, as shown in
In this embodiment of this application, when the first guide board 531 and the second guide board 532 are disposed in the rear sound cavity 512, as shown in
In a possible implementation, as shown in
Certainly, in this embodiment of this application, two ends of the first guide board 531 may be alternatively connected to the two opposite inner walls of the box 51. For example, one end of the first guide board 531 is connected to the inner wall that is of the box 51 and that is close to the rear cover 60, and the other end of the first guide board 531 is connected to the inner wall that is of the box 51 and that is close to the display screen 10. A circulation port 53c may be disposed in the first guide board 531. The first guide board 531 is partitioned into upper and lower guide boards.
In this embodiment of this application, it should be noted that the damping component 53 may include but is not limited to the first guide board 531 and the second guide board 532, for example, may further include a third guide board or a fourth guide board. A disposition quantity of guide boards may be set based on an actual requirement. The first guide board 531 and the second guide board 532 may be vertical boards as shown in
In this embodiment of this application, the first guide board 531 and the second guide board 532 may be plastic boards. For example, the first guide board 531 and the second guide board 532 may be plastic boards. Certainly, materials of the first guide board 531 and the second guide board 532 include but are not limited to plastic. In this embodiment of this application, a width of a gap between the first guide board 531 and the second guide board 532 and thicknesses of the first guide board 531 and the second guide board 532 are set based on an actual requirement. When the first guide board 531 and the second guide board 532 are connected to the inner walls of the box 51, the first guide board 531 and the second guide board 532 may be connected to the inner walls of the box 51 through fastening in an adhesive, hot melting, or injection molding manner.
Scenario 2
In an embodiment of this application, referring to
In this embodiment of this application, a quantity of waterproof breathable films includes but is not limited to 1. Alternatively, there may be alternatively a plurality of waterproof breathable films, and the plurality of waterproof breathable films may be disposed on the leakage hole 5121 at intervals. When the waterproof breathable film is installed on the leakage hole 5121, the waterproof breathable film can be fastened to the leakage hole 5121 in an adhesive, hot melting, or injection molding manner.
Scenario 3
In an embodiment of this application, a sounding component 50 may include a damping component 55, and the damping component 55 may include at least one mesh (Mesh). For example, as shown in
Therefore, according to the first mesh 551 and the second mesh 552 provided in this embodiment of this application, an airflow can be slowed down, so that the airflow enters the cavity 101 in the mobile phone 100 at a low flow rate. Therefore, airflow impact on the rear cover 60 of the mobile phone 100 weakens, and amplitude decreases, so that vibration of the rear cover 60 is damped. In addition, the first mesh 551 and the second mesh 552 are disposed near the leakage hole 5121, so that the first mesh 551 and the second mesh 552 can play a dustproof role, to prevent foreign matter in the cavity 101 of the mobile phone 100 from entering the rear sound cavity 512.
In this embodiment of this application, the first mesh 551 and the second mesh 552 may be disposed in the rear sound cavity 512 and on the leakage hole 5121 in an adhesive, hot melting, or injection molding manner.
In a possible implementation, to further reduce a flow rate at which an airflow enters the mobile phone 100, a sound absorbing material may be disposed in the buffer space 553 between the first mesh 551 and the second mesh 552. For example, as shown in
In a possible implementation, as shown in
In some other embodiments, the sound absorbing material disposed in the buffer space 553 between the first mesh 551 and the second mesh 552 may include but is not limited to the foregoing sound absorbing particle 554 and sound absorbing cotton 555, or may be a porous wood wool sound absorbing board or an inorganic foam sound absorbing material.
In descriptions of embodiments of this application, it should be noted that, unless otherwise clearly specified and limited, terms “assemble”, “connected”, and “connection” should be understood in a broad sense. For example, the terms may be used for a fixed connection, an indirect connection through an intermediate medium, an internal connection between two elements, or an interaction relationship between two elements. Persons of ordinary skill in the art may understand specific meanings of the terms in embodiments of this application based on specific cases.
In the specification, claims, and accompanying drawings of embodiments of this application, the terms “first”, “second”, “third”, “fourth”, and the like (if any) are intended to distinguish between similar objects but do not necessarily indicate a specific order or sequence.
Finally, it should be noted that the foregoing embodiments are merely intended for describing the technical solutions in embodiments of this application rather than limiting this application. Although embodiments of this application are described in detail with reference to the foregoing embodiments, persons of ordinary skill in the art should understand that they may still make modifications to the technical solutions described in the foregoing embodiments or make equivalent replacements to some or all technical features thereof, without departing from the scope of the technical solutions of embodiments of this application.
Number | Date | Country | Kind |
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201910883154.2 | Sep 2019 | CN | national |
Filing Document | Filing Date | Country | Kind |
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PCT/CN2020/115231 | 9/15/2020 | WO |