Speakers and electronic devices

Abstract

This application belongs to the technical field of sound-generating devices, specifically relating to a loudspeaker and electronic device. The loudspeaker includes a loudspeaker housing and a loudspeaker body, with the loudspeaker body disposed within the loudspeaker housing. A front cavity and a rear cavity are formed between the loudspeaker body and the loudspeaker housing. The loudspeaker housing also has a sound-guiding channel, with a first end connected to the rear cavity and a second end connected to the front cavity. The sound-guiding channel is used to change the phase of the sound waves in the rear cavity, so that the sound waves in the front cavity and the rear cavity are superimposed.

Description

Technical Field

[0001] This application belongs to the field of sound-generating device technology, specifically relating to a loudspeaker and electronic device. Background Technology

[0002] With the development of mobile phones and other terminal devices, users have increasingly higher requirements for sound quality, demanding better low-frequency sound efficiency and intensity. To meet these requirements, the industry typically increases the volume of the speaker's rear cavity and uses intelligent amplifiers to provide the speaker with a larger excitation signal, thereby improving the speaker's low-frequency sound efficiency and intensity. However, increasing the volume of the speaker's rear cavity will increase the size of the speaker, and consequently, the size of the terminal device. Summary of the Invention

[0003] The purpose of this application is to provide a loudspeaker and electronic device that can achieve high and low frequency sound generation efficiency and high and low frequency sound generation intensity using limited space.

[0004] To solve the above-mentioned technical problems, this application is implemented as follows:

[0005] In a first aspect, embodiments of this application provide a loudspeaker, including a loudspeaker housing and a loudspeaker body, the loudspeaker body being disposed within the loudspeaker housing, and a loudspeaker front cavity and a loudspeaker rear cavity being formed between the loudspeaker body and the loudspeaker housing.

[0006] The speaker housing also has a sound guide channel. The first end of the sound guide channel is connected to the rear cavity of the speaker, and the second end of the sound guide channel is connected to the front cavity of the speaker. The sound guide channel is used to change the phase of the sound waves in the rear cavity of the speaker so that the sound waves in the front cavity of the speaker are superimposed on the sound waves in the rear cavity of the speaker.

[0007] Secondly, embodiments of this application also provide an electronic device, including a speaker as described above. The electronic device further includes a motherboard cover. The speaker housing has a mating surface facing the motherboard cover. A sound guide channel is disposed on the mating surface. The sound guide channel is located on the side of the mating surface away from the motherboard cover and faces the motherboard cover.

[0008] In this embodiment, a front cavity and a rear cavity are formed between the speaker body and the speaker housing. The sound outlet channel on the speaker housing is connected to the front cavity. A sound guide channel is also provided on the speaker, with its two ends connected to the front and rear cavities respectively. The diaphragm of the speaker body can vibrate, thus generating sound waves in the front and rear cavities. The sound waves in the front cavity can propagate to the outside of the speaker, while the sound waves in the rear cavity can enter the front cavity through the sound guide channel and superimpose with them. The sound guide channel alters the phase of the sound waves in the rear cavity, causing them to become out of phase and align with the phase of the sound waves in the front cavity, thereby enhancing low-frequency sound efficiency and intensity. Therefore, this application can enhance low-frequency sound efficiency and intensity simply by providing a sound guide channel on the speaker housing, without increasing the speaker's size or using a smart amplifier, thus achieving both high and low-frequency sound efficiency and intensity within a limited space. In addition, during the operation of the loudspeaker, the heated gas inside the rear cavity of the loudspeaker can be discharged outside the loudspeaker through the sound guide channel, thereby dissipating the heat inside the loudspeaker and solving the problem that the heat emitted by the loudspeaker is difficult to dissipate. Attached Figure Description

[0009] Figure 1 This is a cross-sectional schematic diagram of the electronic device disclosed in the embodiments of this application;

[0010] Figure 2 This is a partial structural diagram of the electronic device disclosed in the embodiments of this application. Figure 1 ;

[0011] Figure 3 This is a partial structural diagram of the electronic device disclosed in the embodiments of this application. Figure 2 ;

[0012] Figure 4 This is a cross-sectional schematic diagram of an electronic device disclosed in another embodiment of this application.

[0013] Explanation of reference numerals in the attached figures:

[0014] 100-Speaker housing, 101-Sound outlet channel, 102-Sound guide channel, 110-Outer shell, 111-Shell body, 112-Top cover, 113-Front cavity cover, 114-Rear cavity cover, 120-Support component, 200-Speaker body, 310-Speaker front cavity, 320-Speaker rear cavity, 321-Filling cavity, 322-Particulate matter, 400-First dustproof mesh, 500-Sealing sheet, 600-Second dustproof mesh, 700-Middle frame, 710-Sound outlet hole, 800-Main board top cover. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0016] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0017] The speaker and electronic device provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0018] like Figures 1 to 4 As shown in the figure, this application discloses a loudspeaker, including a loudspeaker housing 100 and a loudspeaker body 200. The loudspeaker body 200 is disposed inside the loudspeaker housing 100, and a loudspeaker front cavity 310 and a loudspeaker rear cavity 320 are formed between the loudspeaker body 200 and the loudspeaker housing 100. Specifically, the loudspeaker housing 100 may also have a sound outlet channel 101, which is connected to the loudspeaker front cavity 310. Sound waves in the loudspeaker front cavity 310 can be propagated from inside the loudspeaker to outside the loudspeaker through the sound outlet channel 101.

[0019] The speaker housing 100 also has a sound guide channel 102. The first end of the sound guide channel 102 is connected to the rear cavity 320 of the speaker, and the second end of the sound guide channel 102 is connected to the front cavity 310 of the speaker. Specifically, the second end of the sound guide channel 102 can be directly connected to the front cavity 310 of the speaker, or it can be indirectly connected to the front cavity 310 of the speaker through the sound outlet channel 101.

[0020] The sound guide channel 102 is used to change the phase of the sound waves in the rear cavity 320 of the speaker so that the sound waves in the front cavity 310 of the speaker are superimposed on the sound waves in the rear cavity 320 of the speaker.

[0021] In this embodiment, a front cavity 310 and a rear cavity 320 are formed between the speaker body 200 and the speaker housing 100. The sound outlet channel 101 on the speaker housing 100 is connected to the front cavity 310. The speaker is also provided with a sound guide channel 102, the two ends of which are connected to the rear cavity 320 and the front cavity 310, respectively. The diaphragm of the speaker body 200 can vibrate, thus generating sound waves in the front cavity 310 and the rear cavity 320, respectively. The sound waves in the front cavity 310 can propagate to the outside of the speaker, while the sound waves in the rear cavity 320 can pass through the sound guide channel 102. The sound wave 02 enters the front cavity 310 of the speaker and superimposes with the sound waves inside the front cavity 310. The sound guide channel 102 can change the phase of the sound waves in the rear cavity 320 of the speaker, causing the sound waves in the rear cavity 320 to become out of phase and tend to match the phase of the sound waves in the front cavity 310, thereby enhancing low-frequency sound efficiency and intensity. Therefore, this application can enhance low-frequency sound efficiency and intensity by providing a sound guide channel 102 on the speaker housing 100 without increasing the speaker's size or using a smart amplifier, thus achieving both high and low-frequency sound efficiency and intensity within limited space. Furthermore, during speaker operation, the heated gas inside the rear cavity 320 can be discharged through the sound guide channel 102, thereby dissipating heat from the speaker and solving the problem of heat dissipation being difficult.

[0022] In an optional embodiment, the sound guide channel 102 is used to change the phase of the sound waves in the rear cavity 320 of the speaker, so that the sound waves in the front cavity 310 of the speaker and the sound waves in the rear cavity 320 of the speaker are positively superimposed. This can further enhance the low-frequency sound efficiency and low-frequency sound intensity.

[0023] In an optional embodiment, the sound waves in the rear cavity 320 of the loudspeaker can be out of phase by adjusting the structural parameters of the sound guide channel 102; wherein, the structural parameters include at least one of the length and cross-sectional area of ​​the sound guide channel 102. In this embodiment, the ability of the sound guide channel 102 to change the phase of the sound waves in the rear cavity 320 of the loudspeaker is adjusted by adjusting the length and cross-sectional area of ​​the sound guide channel 102. For example, the length and cross-sectional area of ​​the sound guide channel 102 can be adjusted so that the phase difference between the sound waves in the front cavity 310 of the loudspeaker and the sound waves in the rear cavity 320 of the loudspeaker is less than half the phase of the sound waves in the front cavity 310 of the loudspeaker, so as to facilitate positive superposition of the two. It should be noted that the cross-sectional area of ​​the sound guide channel 102 is the area of ​​the cross section of the sound guide channel 102 perpendicular to its axis.

[0024] In one optional embodiment, the speaker rear cavity 320 includes a filling cavity 321 filled with particulate matter 322. In this embodiment, the particulate matter 322 in the filling cavity 321 of the speaker rear cavity 320 is filled with particulate matter 322. The particulate matter 322 has a porous structure and can adsorb air molecules, thereby increasing the equivalent volume of the speaker rear cavity 320. This is equivalent to increasing the volume of the speaker rear cavity 320, thereby increasing the low-frequency sound efficiency and low-frequency sound intensity. It can be seen that by filling the filling cavity 321 with particulate matter 322 in this embodiment, the low-frequency sound efficiency and low-frequency sound intensity can be increased without increasing the volume of the speaker. In addition, since the speaker rear cavity 320 is connected to the sound guide channel 102, the air circulation in the speaker rear cavity 320 is good, and the particulate matter 322 in the filling cavity 321 can more fully adsorb air molecules, thereby further increasing the equivalent volume of the speaker rear cavity 320.

[0025] In an optional embodiment, the filling cavity 321 is located on one side of the speaker body 200 along a first direction, wherein the first direction is perpendicular to the height direction of the speaker. In this embodiment, with Figure 1 Taking the orientation shown as an example, the filling cavity 321 is located on one side of the speaker body 200 along the first direction. At this time, the filling cavity 321 is not stacked above or below the speaker body 200. That is to say, the filling cavity 321 is arranged side by side with the speaker body 200. This can compress the height of the speaker housing 100, thereby reducing the space in the height direction occupied by the speaker in the electronic device.

[0026] In an optional embodiment, the first end of the sound guide channel 102 is disposed adjacent to the filling cavity 321. This allows all particles 322 within the filling cavity 321 to be positioned close to the first end of the sound guide channel 102. Since the first end of the sound guide channel 102 is connected to the front cavity 310 of the speaker, the first end of the sound guide channel 102 has good airflow, enabling the particles 322 within the filling cavity 321 to more effectively adsorb air molecules, thereby further increasing the equivalent volume of the rear cavity 320 of the speaker. When this embodiment is combined with the previous embodiment, the rear cavity 320 of the speaker can still have a large equivalent volume even when the height of the speaker housing 100 is compressed, thus giving the speaker better low-frequency sound efficiency and low-frequency sound intensity.

[0027] In one alternative embodiment, at least a portion of the filling cavity 321 is located on the side of the speaker body 200 opposite to the front cavity 310 of the speaker. This allows at least a portion of the particles 322 to be located on the side of the speaker body 200 opposite to the front cavity 310 of the speaker. This makes full use of the space on the side of the speaker body 200 opposite to the front cavity 310 of the speaker to fill the particles 322. This increases the volume of the filling cavity 321, thereby increasing the volume of the particles 322 filled therein, and thus increasing the equivalent volume of the rear cavity 320 of the speaker.

[0028] In an optional embodiment, the first end of the sound guide channel 102 is positioned away from the filling cavity 321. This way, the particles 322 within the filling cavity 321 are far from the first end of the sound guide channel 102, preventing them from obstructing the entry of heated gas from the speaker's rear cavity 320 into the sound guide channel 102, thus providing the speaker with good heat dissipation. In a combination of this embodiment and the previous embodiment, even when the filling cavity 321 has a large volume, it will not obstruct the entry of heated gas from the speaker's rear cavity 320 into the sound guide channel 102.

[0029] In one optional embodiment, a first dustproof mesh 400 is provided inside the rear cavity 320 of the loudspeaker. The first dustproof mesh 400 and the inner wall of the rear cavity 320 together form a filling cavity 321. In this embodiment, the filling cavity 321 is formed by the first dustproof mesh 400 and the inner wall of the rear cavity 320. The first dustproof mesh 400 and the inner wall of the rear cavity 320 can hinder the movement of particles 322 in the filling cavity 321, thereby reducing the wear of particles 322 during movement. This can prevent the problem of limited increase in the equivalent volume of the rear cavity 320 due to wear of particles 322. Of course, in addition to the first dustproof mesh 400, the filling cavity 321 can also be formed by a perforated plate or other breathable isolation component, or particles 322 can be directly filled into the rear cavity 320 of the loudspeaker to form the filling cavity 321. This application does not limit the method of forming the filling cavity 321.

[0030] In an optional embodiment, the first dustproof mesh 400 is located between the particulate matter 322 and the first end of the sound guide channel 102. In this embodiment, the first dustproof mesh 400 is located between the particulate matter 322 and the first end of the sound guide channel 102. Thus, the first dustproof mesh 400 prevents the particulate matter 322 in the filling cavity 321 from entering the sound guide channel 102, thereby preventing the particulate matter 322 from blocking the sound guide channel 102 and hindering the transmission of sound waves and heat from the rear cavity 320 of the speaker to the front cavity 310 of the speaker. Therefore, this embodiment achieves two purposes by setting the first dustproof mesh 400: reducing the wear of the particulate matter 322 during movement and preventing the particulate matter 322 from entering the sound guide channel 102, thus achieving a multi-purpose effect.

[0031] Optionally, the speaker housing 100 includes an outer shell 110, with an accommodating space inside the outer shell 110, and the speaker body 200 disposed within the accommodating space. Optionally, a sound guiding channel 102 can be provided inside the outer shell 110, but this requires the outer shell 110 to have a large wall thickness, which would not only increase the volume occupied by the speaker within the electronic device, but also increase the weight of the speaker, thereby reducing the user experience.

[0032] In an optional embodiment, the loudspeaker further includes a sealing plate 500. A portion of the housing 110 is recessed along the direction toward the receiving space, forming a sound guide groove with an opening opposite to the receiving space. The sealing plate 500 covers the opening of the sound guide groove to form a sound guide channel 102. In this embodiment, a portion of the housing 110 is recessed into the receiving space to form a sound guide groove, and the sound guide groove cooperates with the sealing plate 500 to form the sound guide channel 102. Thus, it is not necessary to open the sound guide channel 102 inside the housing 110. Therefore, this embodiment can reduce the wall thickness of the housing 110, thereby reducing the size and weight of the loudspeaker. Furthermore, once the sound guide channel 102 in the previous embodiment is formed, its cross-sectional shape and cross-sectional area cannot be changed. However, in this embodiment, the shape of the sealing sheet 500 can be changed, or sealing sheets 500 of different shapes can be used to cover the sound guide groove. For example, the sealing sheet 500 can be a flat plate structure or an arched structure, etc. In this way, sound guide channels 102 with different cross-sectional shapes and cross-sectional areas can be obtained. This can adjust the ability of the sound guide channel 102 to change the sound waves in the rear cavity 320 of the speaker, thereby facilitating the positive superposition of the sound waves in the front cavity 310 of the speaker and the sound waves in the rear cavity 320 of the speaker.

[0033] In one optional embodiment, the first end and the second end of the sound guide channel 102 are located on opposite sides of the speaker front cavity 310. Specifically, the first end and the second end of the sound guide channel 102 are located on opposite sides of the speaker front cavity 310 along its own length, in which case the sound guide channel 102 extends approximately along the plane of the electronic device's display screen. In this embodiment, having the two ends of the sound guide channel 102 located on opposite sides of the speaker front cavity 310 increases the length of the sound guide channel 102, thereby improving the ability of the sound guide channel 102 to change the phase of the sound waves in the speaker rear cavity 320. This makes the phase of the sound waves in the speaker rear cavity 320 closer to the phase of the sound waves in the speaker front cavity 310, enhancing the positive superposition effect of the two. Of course, the first end and the second end of the sound guide channel 102 can also be located on adjacent sides of the speaker front cavity 310, or on the same side of the speaker front cavity 310.

[0034] In one optional embodiment, the speaker housing 100 includes an outer shell 110, which includes a shell body 111 and a top cover 112. The top cover 112 covers the shell body 111 and is detachably connected to it. A sound guide channel 102 is disposed on the top cover 112. In this embodiment, the outer shell 110 includes a shell body 111 and a top cover 112. The speaker body 200 can be disposed inside the shell body 111. The top cover 112 is detachably connected to the shell body 111. The top cover 112 can be removed from the shell body 111, and then the sound guide channel 102 can be machined on the top cover 112. This makes it more convenient to machine the sound guide channel 102.

[0035] Furthermore, the speaker housing 100 also includes a support member 120, which is disposed inside the housing body 111. The support member 120 is arranged around the outer peripheral surface of the speaker body 200 and connected to the top cover 112. The speaker body 200, the support member 120, the housing body 111 and the top cover 112 surround to form the speaker front cavity 310, so that the speaker rear cavity 320 can be arranged around the speaker front cavity 310, thereby increasing the volume of the speaker rear cavity 320. Optionally, the top cover 112 includes a front cavity cover 113 and a rear cavity cover 114. The support member 120 is connected to the front cavity cover 113, and the speaker body 200, the support member 120, the shell body 111, and the front cavity cover 113 surround to form the speaker front cavity 310. The rear cavity cover 114 is disposed around the outer peripheral surface of the front cavity cover 113, and the edge of the rear cavity cover 114 near the front cavity cover 113 is detachably connected to the support member 120. The rear cavity cover 114 is detachably connected to the shell body 111. The sound guide channel 102 is disposed on the rear cavity cover 114. In this way, the rear cavity cover 114 can be removed from the shell body 111 and the support member 120, and then the sound guide channel 102 can be processed on the rear cavity cover 114, which makes it more convenient to process the sound guide channel 102.

[0036] This application also discloses an electronic device, including a speaker as described in any of the above embodiments. The electronic device further includes a motherboard cover 800, and a speaker housing 100 having a mating surface facing the motherboard cover 800. A sound guide channel 102 is disposed on the mating surface, located on the side of the mating surface away from the motherboard cover 800, and facing the motherboard cover 800. Specifically, the sound guide channel 102 is located on the side of the mating surface away from the motherboard cover 800, so that the mating surface of the speaker housing 100 can fit closely with the motherboard cover 800, thereby forming the sound guide channel 800 using the motherboard cover 800 and the speaker housing 100, without the need for additional sealing elements such as a sealing sheet 500 to form the sound guide channel 800, thus reducing the size of the electronic device. Of course, this embodiment can also be combined with the technical solution of the speaker including the sealing sheet 500. In this case, the motherboard cover 800 and the sealing sheet 500 are attached to each other, and the two work together to form the sound guiding channel 800. The motherboard cover 800 can press the sealing sheet 500, so that the sealing effect of the sealing sheet 500 is better.

[0037] Optionally, the electronic device includes a mid-frame 700, on which a sound outlet 710 is provided. The sound outlet 710 can be connected to the sound outlet channel 101, and the sound waves emitted by the speaker can be transmitted to the external environment through the sound outlet 710. If there are other structural components between the mid-frame 700 and the speaker, a sound transmission hole can be provided on the other structural components, and the sound outlet channel 101 and the sound outlet 710 can be connected through the sound transmission hole. Further, at least one of the outlet of the sound outlet channel 101 and the outlet of the sound transmission hole is provided with a second dustproof mesh 600.

[0038] The foregoing embodiments of this application focus on describing the differences between various embodiments. As long as the different optimization features between embodiments are not contradictory, they can be combined to form better embodiments. For the sake of brevity, these differences will not be elaborated upon here. The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art, under the guidance of this application, can make many modifications without departing from the spirit and scope of the claims, all of which fall within the protection scope of this application.

Claims

1. A loudspeaker, characterized in that, The speaker includes a speaker housing (100) and a speaker body (200). The speaker housing (100) includes an outer shell (110), which includes a shell body (111) and a top cover (112). The speaker body (200) is disposed inside the shell body (111), and the top cover (112) covers the shell body (111) and is detachably connected to the shell body (111). A speaker front cavity (310) and a speaker rear cavity (320) are formed between the speaker body (200) and the speaker housing (100). The loudspeaker also includes a sealing plate (500), the housing (110) has a receiving space, the loudspeaker body (200) is disposed in the receiving space, a portion of the housing (110) is recessed in the direction toward the receiving space and forms a sound guide groove with an opening away from the receiving space, and the sealing plate (500) covers the opening of the sound guide groove to form a sound guide channel (102). The first end of the sound guide channel (102) is connected to the rear cavity (320) of the loudspeaker, and the second end of the sound guide channel (102) is connected to the front cavity (310) of the loudspeaker. The sound guide channel (102) is used to change the phase of the sound wave in the rear cavity (320) of the loudspeaker so that the sound wave in the front cavity (310) of the loudspeaker is superimposed with the sound wave in the rear cavity (320) of the loudspeaker. The top cover (112) includes a front cavity cover (113) and a rear cavity cover (114). The speaker housing (100) also includes a support member (120). The support member (120) is arranged around the outer peripheral surface of the speaker body (200). The support member (120) is connected to the front cavity cover (113). The speaker body (200), the support member (120), the housing body (111), and the front cavity cover (113) surround to form the front cavity (310) of the speaker. The rear cavity cover (114) is arranged around the outer peripheral surface of the front cavity cover (113). The edge of the rear cavity cover (114) near the front cavity cover (113) is detachably connected to the support member (120). The rear cavity cover (114) is detachably connected to the housing body (111). The sound guide channel (102) is located on the rear cavity cover (114).

2. The loudspeaker according to claim 1, characterized in that, The sound guide channel (102) is used to change the phase of the sound wave in the rear cavity (320) of the loudspeaker so that the sound wave in the front cavity (310) of the loudspeaker is positively superimposed with the sound wave in the rear cavity (320) of the loudspeaker.

3. The loudspeaker according to claim 1, characterized in that, By adjusting the structural parameters of the sound guide channel (102), the sound waves in the rear cavity (320) of the loudspeaker can be reversed; The structural parameters include at least one of the length and cross-sectional area of ​​the sound guide channel (102).

4. The loudspeaker according to claim 1, characterized in that, The rear cavity (320) of the loudspeaker includes a filling cavity (321) filled with particulate matter (322).

5. The loudspeaker according to claim 4, characterized in that, The filling cavity (321) is located on one side of the speaker body (200) along the first direction. Wherein, the first direction is perpendicular to the height direction of the speaker.

6. The loudspeaker according to claim 4, characterized in that, At least a portion of the filling cavity (321) is located on the side of the speaker body (200) opposite to the speaker front cavity (310).

7. The loudspeaker according to claim 4, characterized in that, The rear cavity (320) of the loudspeaker is provided with a first dustproof mesh (400), and the first dustproof mesh (400) and the inner wall of the rear cavity (320) of the loudspeaker together form the filling cavity (321).

8. The loudspeaker according to claim 7, characterized in that, The first dustproof net (400) is located between the particulate matter (322) and the first end of the sound guiding channel (102).

9. The loudspeaker according to claim 1, characterized in that, The first end and the second end of the sound guide channel (102) are located on opposite sides of the front cavity of the loudspeaker (310).

10. An electronic device, characterized in that, The electronic device includes a speaker as claimed in any one of claims 1 to 9, and further includes a motherboard cover (800), the speaker housing (100) having a mating surface disposed toward the motherboard cover (800), the sound guide channel (102) being located on the side of the mating surface away from the motherboard cover (800) and toward the motherboard cover (800).

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