Electronic device
Patent Information
- Application Number
- CN202380074914.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-10-31
- Filing Date
- 2023-08-24
- Publication Date
- 2025-06-06
AI Technical Summary
Speakers in existing electronic devices have limited sound quality improvement effects in the mid- and low-frequency bands, and cannot satisfy users' constant pursuit of sound quality experience.
Designing a sound guide channel with a horn-like spatial structure, the radiation impedance of the speaker is increased by gradually increasing the cross-sectional area, thereby improving the sensitivity of the mid-to-low frequency band.
It improves the electro-acoustic conversion efficiency of the speaker in the mid-low frequency band, enhances the sound pressure level performance of musical instruments and human voices, and enhances the user's listening enjoyment.
Smart Images
Figure CN120113255A_ABST
Abstract
Description
electronic devices
[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on October 31, 2022, with application number 202211366386.9 and application name “Electronic Device”, the entire contents of which are incorporated by reference into this application. Technical Field
[0002] The present application relates to the technical field of electronic devices, and more particularly, to an electronic device with a speaker. Background Art
[0003] When users use electronic devices like mobile phones, laptops, tablets, and televisions, the quality of the mid- and low-frequency sound directly determines the speaker's performance and has a crucial impact on the user's sound experience. This is because the frequencies of most musical instruments and the human voice are present in the mid- and low-frequency range. The higher the speaker's sensitivity in these low- and mid-frequency ranges, the better the user's listening experience. Therefore, to enhance the user's sound quality experience, electronic device manufacturers focus on optimizing the speaker's sound performance in these low- and mid-frequency ranges.
[0004] Currently, the main approaches to optimizing speaker performance in the mid- and low-frequency ranges are to increase the rear acoustic cavity, reduce the equivalent radiation area, enhance the surround's compliance, increase the voice coil's mass, and improve the electromechanical coupling factor. However, these methods have limited impact on improving speaker sound quality in the mid- and low-frequency ranges and cannot meet users' ever-increasing demands for a superior sound quality experience.
[0005] Summary of the Invention
[0006] The purpose of this application is to provide an electronic device. In order to solve the technical problem in the related art that the sound quality improvement effect of the speaker in the mid- and low-frequency bands is limited, by designing a sound guide channel with a horn-like spatial structure, the sensitivity of the speaker in the mid- and low-frequency bands can be improved, so that users have a better listening experience.
[0007] The present application provides an electronic device, including a housing, a speaker module, and a sound guide channel.
[0008] The shell is provided with a sound outlet hole connecting the interior of the shell with the outside;
[0009] The speaker module is disposed in the housing, comprising a shell and a sound-emitting unit disposed in the shell, wherein the sound-emitting unit and the shell form a front sound cavity, and the shell is provided with a through hole connecting the front sound cavity with the interior of the shell;
[0010] The sound guide channel includes an input end for receiving sound waves and a diffusion end for diffusing sound waves. The input end of the sound guide channel is connected to the front sound cavity through the through hole, and the diffusion end is connected to the outside world through the sound outlet hole. From the input end to the diffusion end, the cross-sectional area of the sound guide channel gradually increases.
[0011] The electronic device in the present application has a sound guide channel whose cross-sectional area gradually increases from the input end to the diffusion end, so that the sound guide channel exists in a horn-like spatial structure, thereby improving the sensitivity of the speaker in the medium and low frequency bands, so that the user has a better listening experience. The specific reason is: since the action of force is mutual, when the sound-emitting unit vibrates in the air and radiates sound waves outward, it will inevitably be subjected to the reaction force of the air on the sound-emitting unit. For the sound source vibration system, it is equivalent to adding a force impedance to the original mechanical vibration system. This force impedance added to the mechanical system due to sound radiation is called radiation force impedance, or simply radiation impedance for short. Due to the existence of radiation impedance, energy loss will be caused when the speaker is working. This part of the energy loss will not be lost to the air in the form of heat energy, but will be converted into sound energy and transmitted in the form of sound waves. The greater the radiation impedance, the more energy will be transmitted in the form of sound waves in the speaker, so the efficiency of the speaker's electrical-to-acoustic conversion will be higher. The electronic device in the present application has a sound guide channel in a horn-shaped spatial structure. Compared with the traditional sound guide channel structure, the horn-shaped sound guide channel can produce a greater radiation impedance for the sound unit. Therefore, under the same power drive, the speaker of the electronic device in the present application is more efficient in electro-acoustic conversion, which makes the sound pressure level of the sound unit in each audio frequency band improved, especially for the mid- and low-frequency bands, the sound unit has a higher sensitivity, so that the speaker can perform better when analyzing the sounds of most musical instruments and human voices, thereby improving the user's auditory enjoyment.
[0012] In one possible design, the electronic device further includes:
[0013] A sound guide tube, the lumen of which constitutes the sound guide channel.
[0014] In a possible design, the sound guide tube includes a first tube section, one end of the first tube section is connected to the sound outlet of the shell, and the other end is connected to the through hole of the shell, and the first tube section is bent in a circuitous manner as a whole.
[0015] In a possible design, the first pipe section is bent into an L-shaped structure, a U-shaped structure, an S-shaped structure, or a spiral structure.
[0016] In a possible design, the sound guide tube further includes a second tube segment, the first tube segment is connected to the through hole through the second tube segment, and the second tube segment is bent and tightly arranged on the outer surface of the shell.
[0017] In one possible design, the sound guide tube also includes a third tube segment, the first tube segment is connected to the sound outlet through the third tube segment, and the third tube segment is bent to compensate for the position deviation of the tube mouth of the first tube segment relative to the sound outlet.
[0018] In a possible design, the sound guide tube and the housing are bonded by adhesive or connected by a tube clamp fixing seat.
[0019] In one possible design, the cross-sectional shape of the sound guide channel includes one of a circular shape, a rectangular shape, and an elliptical shape.
[0020] In one possible design, the shell includes a front shell and a rear shell, the front shell includes a first front shell portion and a second front shell portion protruding from the outer surface of the first front shell portion, the sound unit is arranged at the junction of the first front shell portion and the second front shell portion, so that the sound unit and the second front shell portion are arranged to form the front sound cavity, and the sound unit, the first front shell portion and the rear shell are arranged to form a rear sound cavity.
[0021] In a possible design, the root of the second front shell portion extends toward the rear shell portion to form an annular block, and the sound-emitting unit is embedded in the interior of the annular block.
[0022] In a possible design, a protrusion is provided on the inner side of the annular block and one of the sound-emitting units, and a slot is provided on the other of the two. The protrusion can be snapped into the slot to connect the sound-emitting unit to the annular block.
[0023] In a possible design, a step is provided on the inner side of the annular block in a circle, and the sound-generating unit abuts against the step.
[0024] In a possible design, the housing includes a first housing and a second housing that are arranged opposite to each other, the edge of the second housing is a curved surface, and the sound outlet is located on the curved surface.
[0025] In a possible design, the front shell is connected to the second shell, and the rear shell is connected to the first shell.
[0026] In a possible design, the speaker module and the sound guide tube are arranged at the edge of the housing, and the front shell and the sound unit are arranged at an angle relative to the surface of the rear shell.
[0027] In a possible design, the through hole is located on a side surface of the second front shell portion, so that the sound guide tube is extended from the side surface of the second front shell portion.
[0028] In a possible design, the outer surface of the second front shell portion corresponds to the shape of the arc surface of the second outer shell.
[0029] In a possible design, a breathable barrier is provided in the sound outlet. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] FIG1 is a partial cross-sectional view of an example of an electronic device in an embodiment of the present application;
[0031] FIG2 is a partial cross-sectional view of another example of an electronic device in an embodiment of the present application;
[0032] FIG3 is a schematic diagram of an example of a speaker module and a sound guide tube in an embodiment of the present application;
[0033] FIG4 is a schematic diagram of another example of a speaker module and a sound guide tube in an embodiment of the present application;
[0034] FIG5 is a schematic diagram of another example of a speaker module and a sound guide tube in an embodiment of the present application;
[0035] FIG6 is an exploded view of the speaker module in FIG5 ;
[0036] FIG7 is a schematic diagram of another example of a sound guide tube in an embodiment of the present application;
[0037] FIG8 is a schematic diagram of another example of a sound guide tube in an embodiment of the present application;
[0038] FIG9 is a schematic diagram of another example of a sound guide tube in an embodiment of the present application;
[0039] FIG10 is a schematic diagram of the speaker module and the sound guide tube in FIG5 from another perspective;
[0040] FIG11 is an exploded view of the speaker module in FIG10 ;
[0041] FIG12 is an enlarged view of point A in FIG11;
[0042] FIG13 is an enlarged view of point B in FIG11;
[0043] FIG14 is a cross-sectional view of an example of a speaker module and a sound guide tube in an embodiment of the present application;
[0044] FIG15 is an enlarged view of point C in FIG14;
[0045] FIG16 is a schematic diagram of an example of an electronic device in an embodiment of the present application;
[0046] FIG17 is a schematic diagram of an exploded second housing of an electronic device in an embodiment of the present application;
[0047] FIG18 is a cross-sectional view taken along line EE in FIG16 ;
[0048] FIG19 is an enlarged view of point D in FIG18;
[0049] FIG. 20 is a frequency response curve diagram of the speaker of the electronic device in FIG. 17 .
[0050] Reference numerals:
[0051] 10. Housing; 11. Sound outlet; 12. First housing; 121. Keyboard; 13. Second housing; 131. Support foot; 132. Arc surface;
[0052] 20. Speaker module; 21. Housing; 211. Front sound cavity; 212. Rear sound cavity; 213. Through hole; 214. Front housing; 214a. First front housing portion; 214b. Second front housing portion; 214c. Ring block; 214d. Protrusion; 214e. Step; 215. Rear housing; 22. Sound unit; 221. Slot;
[0053] 30. Sound guide channel; 31. Input end; 32. Diffuser end;
[0054] 40. Sound guide tube; 41. First tube section; 42. Second tube section; 43. Third tube section;
[0055] 50. Battery module; 60. Desktop; 61. Gap. DETAILED DESCRIPTION
[0056] The following is an illustrative introduction to the relevant contents that may be involved in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments.
[0057] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.
[0058] In the description of this application, it should be understood that the terms "upper", "lower", "side", "inside", "outside", "top", "bottom", etc. indicate orientations or positional relationships based on the installation, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this application.
[0059] It should also be noted that, in the embodiments of the present application, the same reference numerals are used to represent the same component or the same part. For the same parts in the embodiments of the present application, the figure may only mark one of the parts or parts as an example. It should be understood that the reference numerals are also applicable to other identical parts or parts.
[0060] In the description of this application, it should be noted that the term "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone.
[0061] A loudspeaker, also known as a "horn," is a commonly used electroacoustic transducer. Its main operating principle is to use an energized element to drive the diaphragm to produce mechanical vibrations, which in turn pushes the surrounding air, causing fluctuations in the air medium and achieving the "electricity-force-sound" conversion.
[0062] Common speaker types include dynamic speakers, balanced iron speakers, dynamic-iron hybrid speakers, electromagnetic speakers, inductive speakers, electrostatic speakers, planar speakers, and ribbon speakers. These various types of speakers are widely used in electronic devices that require sound, such as mobile phones, laptops, tablets, and televisions.
[0063] Generally speaking, the sound frequency audible to the human ear is in the range of 20Hz-20KHz, among which 100Hz-3000Hz is defined as the medium and low frequency band.
[0064] When users use electronic devices such as mobile phones, laptops, tablets, and televisions, the quality of the mid- and low-frequency sound directly determines the speaker's performance and has a crucial impact on the user's sound quality experience. This is because the sound frequencies of most musical instruments and the human voice are reflected in the mid- and low-frequency bands, that is, the frequencies are concentrated in the 100Hz-3000Hz range. The higher the speaker's sensitivity in this frequency band, the better the user's listening experience. Therefore, to enhance the user's sound quality experience, relevant electronic device manufacturers focus on optimizing the speaker's sound performance in the mid- and low-frequency bands.
[0065] In related technologies, speakers in electronic devices are directly connected to the outside world through a hole. To optimize the speaker's mid- and low-frequency performance, methods such as increasing the rear acoustic cavity, reducing the equivalent radiation area, increasing the compliance of the surround, increasing the mass of the voice coil, and increasing the electromechanical coupling factor are often used to enhance the listening experience of mid- and low-frequency sounds. However, these methods have limited effect on improving the sound quality of speakers in the mid- and low-frequency ranges and cannot meet users' ever-increasing demands for speaker sound quality.
[0066] Therefore, in order to solve the technical problem in the related art that the sound quality improvement effect of the speaker in the mid- and low-frequency bands is limited, by designing a sound guide channel with a horn-like spatial structure, the sensitivity of the speaker in the mid- and low-frequency bands can be improved, so that users have a better listening experience.
[0067] The electronic device provided by this application is now described in detail with reference to the accompanying drawings.
[0068] FIG1 is a partial cross-sectional view of an example of an electronic device in an embodiment of the present application.
[0069] As shown in FIG1 , an electronic device provided in an embodiment of the present application includes a housing 10 , a speaker module 20 , and a sound guide channel 30 .
[0070] The housing 10 is provided with a sound outlet 11 that connects the interior of the housing 10 with the outside. The housing 10 is an outer protective shell of an electronic device, and has an accommodating space inside for installing various components such as the speaker module 20, the battery module 50, and the processor.
[0071] The speaker module 20 is disposed within the housing 10. The speaker module 20 includes a shell 21 and a sound unit 22 disposed within the shell 21. The sound unit 22 and the shell 21 enclose a front sound cavity 211. The shell 21 is provided with a through hole 213 that connects the front sound cavity 211 with the interior of the housing 10. In addition, the speaker module 20 also has a rear sound cavity 212. The rear sound cavity 212 can be formed by a portion of the space separated from the interior of the shell 21 by the sound unit 22. Alternatively, the shell 21 does not participate in the formation of the rear sound cavity 212, and the rear sound cavity 212 is formed by the entire space of the electronic device. The existence of the front sound cavity 211 and the rear sound cavity 212 is to separate the front and rear sound waves to prevent mutual interference between the two and cause an acoustic short circuit.
[0072] The sound guide channel 30 includes an input end 31 for receiving sound waves and a diffusion end 32 for diffusing sound waves. The input end 31 of the sound guide channel 30 is connected to the front sound cavity 211 through the through hole 213, and the diffusion end 32 is connected to the outside world through the sound outlet 11. From the input end 31 to the diffusion end 32, the cross-sectional area of the sound guide channel 30 gradually increases, so that the sound guide channel 30 forms a horn-like spatial structure.
[0073] As we all know, forces act reciprocally. When the sound-generating unit 22 vibrates in the air and radiates sound waves, it inevitably experiences a reaction force from the air. For the sound source vibration system, this is equivalent to adding a force impedance to the original mechanical vibration system. This force impedance added to the mechanical system due to sound radiation is called radiation force impedance, or simply radiation impedance. The existence of radiation impedance causes energy loss during speaker operation. This energy loss is not lost to the air as heat, but is converted into acoustic energy and transmitted as sound waves. The greater the radiation impedance, the more energy is transmitted from the speaker as sound waves, thus increasing the speaker's electrical-to-acoustic conversion efficiency.
[0074] The electronic device in the present application has a sound guide channel 30 whose cross-sectional area gradually increases from the input end 31 to the diffusion end 32, so that the sound guide channel 30 exists in a horn-shaped spatial structure. Compared with the traditional sound guide channel structure, the horn-shaped sound guide channel 30 can produce a larger radiation impedance for the sound unit 22. Therefore, under the same power drive, the speaker of the electronic device in the present application is more efficient in electro-acoustic conversion, which makes the sound pressure level of the sound unit 22 in each audio frequency band improved, especially for the mid- and low-frequency bands, the sound unit 22 has a higher sensitivity, so that the speaker can perform better when analyzing the sounds of most musical instruments and human voices, thereby improving the user's auditory enjoyment.
[0075] To sum up, the electronic device provided in the embodiment of the present application, by designing a sound guide channel with a horn-like spatial structure, makes the speaker of the electronic device have the advantages of high efficiency of electro-acoustic conversion, high sensitivity in the mid- and low-frequency bands, and good user listening experience.
[0076] Optionally, the sound-generating unit 22 includes a diaphragm and a driving device disposed on one side of the diaphragm, and the driving device is used to drive the diaphragm to vibrate, so as to drive the air to vibrate and form sound waves.
[0077] Optionally, the driving device may be a moving coil driving device, a capacitive driving device, a reed driving device or a crystal driving device.
[0078] Optionally, the driving device may be connected to the mainboard circuit via a spring clip, a board to board (BTB) connector, or the like.
[0079] Optionally, the electronic device may be a mobile or fixed terminal with a speaker, such as a mobile phone, a tablet computer, a laptop computer, a desktop computer, a television, an electronic watch, a walkie-talkie, a wearable device, or a virtual reality device.
[0080] Optionally, when the electronic device is a mobile phone, the speaker module 20 may be an external speaker, or may be an earpiece speaker.
[0081] Optionally, the speaker module 20 and the sound guide channel 30 can also be transplanted into vehicle speakers of vehicles such as cars, motorcycles, and subways.
[0082] Optionally, the sound guide channel 30 can be formed by the internal components of the electronic device and the inner wall of the housing 10.
[0083] Specifically, the sound channel 30 can be formed by cooperating with components such as the battery module 50 and the display module in conjunction with the inner wall of the housing 10. The battery module 50 and the display module are specifically selected because their surfaces are relatively flat and consistent, allowing them to be formed with the inner surface of the housing 10 to form a regular sound channel 30. Furthermore, the battery module 50 and the display module have a larger surface area than other modules, allowing for the formation of a longer sound channel 30.
[0084] For example, as shown in Figure 1, the sound hole 11 is opened at the corner of the shell 10, so that the inner surface of the shell 10 can be better utilized. The battery module 50 is then arranged at an angle, or designed to have an inclined surface structure, so that the surface of the battery module 50 and the inner surface of the shell 10 can be combined to form a sound guide channel 30 with a small cross-sectional area at one end and a large cross-sectional area at the other end.
[0085] Optionally, the sound guide channel 30 may also be composed of a separately added sound guide tube 40 . For more detailed description, please refer to the embodiments described below.
[0086] Optionally, the through hole 213 may be provided on the surface or side of the shell 21 , as long as it can be connected to the front sound cavity 211 .
[0087] Optionally, the sound outlet 11 may be provided on the front, back or side of the housing 10 .
[0088] Optionally, the contour line of the cross section of the sound guide channel 30 includes a conical type, an exponential type, a hyperbolic type, a parabola type, and a combined type.
[0089] Optionally, in the electronic device in the present application, based on the existence of the horn-shaped sound guide channel 30, the relevant technology can also be used to further improve the listening experience of mid- and low-frequency by increasing the rear sound cavity, reducing the equivalent radiation area, increasing the compliance of the folding ring, increasing the voice coil mass, and increasing the electromechanical coupling factor.
[0090] FIG2 is a partial cross-sectional view of another example of the electronic device in the embodiment of the present application.
[0091] As mentioned above, the sound guide channel 30 can also be composed of a separately added sound guide tube 40. That is, in an embodiment provided in the present application, as shown in Figure 2, the electronic device also includes a sound guide tube 40, and the tube cavity of the sound guide tube 40 constitutes the sound guide channel 30.
[0092] In this embodiment, the sound guide channel 30 is formed by using the lumen of the sound guide tube 40, which can make the design position of the sound guide channel 30 more flexible and facilitate layout inside the electronic device. In addition, the design of the sound guide tube 40 has the advantages of simple structure and easy molding.
[0093] Furthermore, in the aforementioned method of using the battery module 50 and display module to enclose the sound guide channel 30, since the dimensions and structure of the battery module 50 and display module are determined during the manufacturing stage, secondary optimization and improvement of the sound guide channel 30 is not possible. In contrast, the sound guide tube 40 in this embodiment is much easier to optimize and improve. The sound guide tube 40 can be simply trimmed or added, thereby improving the sound quality of different frequency bands by varying its length and cross-sectional area.
[0094] The sound guide tube 40 in the embodiment of the present application has different performances when its length is changed. For example, the length of the sound guide tube 40 can be lengthened by adding connections, which can further improve the low-frequency dive, that is, the sound pressure level of the low-frequency band below 100Hz can be improved, so that the speaker can resolve lower-frequency sounds, allowing the user to hear more low-frequency sounds, achieving the effect of low-frequency dive; the length of the sound guide tube 40 can also be shortened by half by cutting, at this time the sound pressure level of the 200Hz-3000Hz frequency band can be improved, so that the sound guide tube 40 can optimize the sound quality of a specific frequency band, reflecting better targetedness.
[0095] Alternatively, as shown in FIG2 , the axis of the sound guide tube 40 is always aligned from the input end 31 to the diffusion end 32 . This can also be understood as the sound guide tube 40 being similar to an eccentric reducer used in the chemical industry. This structure of the sound guide tube 40 is relatively simple and has low manufacturing costs.
[0096] Optionally, the axes of the sound guide tubes 40 are not aligned from the input end 31 to the diffusion end 32. This can be understood as analogous to eccentric reducers used in the chemical industry. This design allows for greater flexibility and flexibility, allowing for various bends and configurations, making it easier to install within electronic devices. A more detailed description can be found in the following embodiments.
[0097] Optionally, the end faces of the tube openings at both ends of the sound guide tube 40 are respectively bonded to the sound outlet hole 11 of the shell 10 and the through hole 213 of the shell 21; or, the two ends of the sound guide tube 40 are respectively fixed to the sound outlet hole 11 of the shell 10 and the through hole 213 of the shell 21 by socket connection.
[0098] Specifically, when the sound guide tube 40 is bonded to the shell 10 or the housing 21, there are two implementation methods: one is to attach the adhesive to the end face of the tube mouth of the sound guide tube 40, the sound outlet hole 11 and the through hole 213 in advance, and then use a robot to align the sound guide tube 40 with the sound outlet hole 11 and the through hole 213 respectively, and at the same time, bond and fix the sound guide tube 40 to the sound outlet hole 11 and the through hole 213; the other is to use a robot to align the sound guide tube 40 with the sound outlet hole 11 and the through hole 213 respectively, and then insert the two ends of the sound guide tube 40 into the sound outlet hole 11 and the through hole 213 respectively, and then keep the robot stationary, and inject adhesive into the gap 61 between the sound guide tube 40 and the sound outlet hole 11 and the through hole 213 through a dispensing tool.
[0099] Optionally, the sound guide tube 40 can be connected to the shell 21 through an integral molding manner, and the other end can be bonded or connected to the sound outlet hole 11 of the shell 10 through a socket connection; or, the sound guide tube 40 can also be connected to the shell 10 through an integral molding manner, and the other end can be bonded or connected to the through hole 213 of the shell 21 through a socket connection.
[0100] The above fixed installation method of the sound guide tube 40 only introduces the fixation of the tube ends of the sound guide tube 40. If the tube cavity of the sound guide tube 40 is long or the structure is soft, the following problems will occur: the sound-emitting unit 22 will radiate sound waves to the sound guide tube 40 when vibrating, and the coupling of the sound waves with the tube body of the sound guide tube 40 will cause the sound guide tube 40 to vibrate. If the sound guide tube 40 is not fixed stably, the sound guide tube 40 may shake in the electronic device, which will not only affect the listening experience of the mid- and low-frequency sound quality and cause mid-range distortion, but also if the shaking amplitude is too large, the sound guide tube 40 will collide with the shell 10 and produce abnormal noise, thereby affecting the user's sound quality experience.
[0101] Therefore, in order to solve the above problem, in an embodiment provided in the present application, the sound guide tube 40 and the housing 10 are bonded by an adhesive or connected by a tube clamp fixing seat.
[0102] A pipe clamp is a device for securing pipes and is widely used in industries such as electricity, metallurgy, petroleum, and chemicals, as well as in vibration reduction applications such as bridges, buildings, and large-scale equipment. Accordingly, miniaturized design and processing of pipe clamps known in related art can also be applied to the securing method for the sound guide tube 40 provided in the present embodiment.
[0103] FIG3 is a schematic diagram of an example of the speaker module 20 and the sound guide tube 40 in an embodiment of the present application.
[0104] As mentioned above, the axes of the sound guide tube 40 may not be on the same straight line from the input end 31 to the diffusion end 32. That is, in an embodiment provided in the present application, as shown in Figure 3, the sound guide tube 40 includes a first tube section 41, one end of the first tube section 41 is connected to the sound outlet 11 of the shell 10, and the other end is connected to the through hole 213 of the shell 21, and the first tube section 41 is bent in a circuitous manner as a whole.
[0105] In this embodiment, the sound guide tube 40 is designed to have a tortuous structure, which can ensure that the sound guide tube 40 has a sufficient tube cavity length and the overall structure of the sound guide tube 40 can be relatively compact, so that it can be conveniently arranged inside the electronic device and the internal space of the electronic device can be fully and reasonably utilized.
[0106] Optionally, the first pipe section 41 can be bent into an L-shaped structure, a U-shaped structure, an S-shaped structure, a spiral structure, etc., which are described in detail below.
[0107] As shown in FIG. 3 , in an embodiment provided in the present application, the first tube section 41 of the sound guide tube 40 is bent into a U-shaped structure.
[0108] In this embodiment, the sound guide tube 40 is designed to be bent into a U-shaped structure, which can ensure that the overall length of the sound guide tube 40 is only half of the tube lumen length while ensuring that the tube lumen length of the sound guide tube 40 is sufficient. In addition, since the input end 31 with a small cross-sectional area is bent to the diffusion end 32 with a large cross-sectional area, the overall width of the sound guide tube 40 is also relatively uniform and regular, which is useful for arrangement in electronic equipment.
[0109] FIG. 7 is a schematic diagram of another example of the sound guide tube 40 in the embodiment of the present application.
[0110] As shown in FIG. 7 , in another embodiment provided by the present application, the first tube section 41 of the sound guide tube 40 may also be bent into an L-shaped structure.
[0111] In this embodiment, the sound guide tube 40 is designed to be bent into an L-shaped structure, so that the sound guide tube 40 can be arranged at the corner position of the electronic device. For example, when the electronic device is a mobile phone, the L-shaped sound guide tube 40 can be set at any one of the four corners of the mobile phone, which can fully and reasonably utilize the internal space of the mobile phone.
[0112] FIG8 is a schematic diagram of another example of the sound guide tube 40 in the embodiment of the present application.
[0113] As shown in FIG. 8 , in another embodiment provided by the present application, the first tube section 41 of the sound guide tube 40 can also be bent into an S-shaped structure.
[0114] In this embodiment, the sound guide tube 40 is designed to be bent into an S-shaped structure, so that the sound guide tube 40 can be arranged in the component gap 61 of the electronic device. For example, when the electronic device is a laptop computer, the S-shaped sound guide tube 40 can be set in the gap 61 between components such as the fan module, the optical drive module, and the hard disk module, so that the internal space of the laptop computer can be fully and reasonably utilized.
[0115] FIG9 is a schematic diagram of another example of the sound guide tube 40 in the embodiment of the present application.
[0116] As shown in FIG. 9 , in another embodiment provided by the present application, the first tube section 41 of the sound guide tube 40 can also be bent into a spiral structure.
[0117] In this embodiment, the sound guide tube 40 is designed to be a curved spiral structure. Although it needs to occupy a larger layout space inside the electronic device, the sound guide channel 30 formed by the sound guide tube 40 always transitions in a smooth arc from the input end 31 to the diffusion end 32, which enables the sound waves to pass smoothly through the sound guide channel 30 and diffuse out from the sound outlet 11. It has less blocking effect on the sound waves, and the energy loss of the sound waves when propagating in the sound guide channel 30 is less, and the final mid- and low-frequency sound quality is better improved.
[0118] FIG. 4 is a schematic diagram of another example of the speaker module 20 and the sound guide tube 40 in the embodiment of the present application.
[0119] As shown in FIG4 , in an embodiment provided in the present application, the sound guide tube 40 further includes a second tube segment 42 , the first tube segment 41 is connected to the through hole 213 through the second tube segment 42 , and the second tube segment 42 is bent and tightly arranged on the outer surface of the shell 21 .
[0120] In this embodiment, a second tube section 42 is added between the first tube section 41 and the housing 21. By bending the second tube section 42, the first tube section 41 can be guided toward the inner surface of the housing 10 for placement. Specifically, in the scenario shown in FIG3 , without the second tube section 42, the first tube section 41 would be suspended within the electronic device, occupying a significant amount of space. In the scenario shown in FIG4 , the second tube section 42 guides the first tube section 41 toward the inner surface of the housing 10 for placement, thereby freeing up the space directly below the first tube section 41 for placement of other components, further optimizing the internal structure of the electronic device.
[0121] In addition, as previously described, the sound guide tube 40 is bonded to the housing 10 using adhesive or a tube clamp. Without the second tube section 42, a tube clamp would be required to secure the first tube section 41. This would result in an excessive number of components, a complex structure, and increased production costs for the electronic device. However, by bending the second tube section 42 so that the first tube section 41 can lie against the inner surface of the housing 10, the first tube section 41 can be conveniently bonded to the inner surface of the housing 10 using adhesive.
[0122] Furthermore, in this embodiment, the sound guide tube 40 can be quickly and firmly fixed to the inner surface of the housing 10 by bonding, which is also relatively simple to implement.
[0123] In addition, the second pipe section 42 is arranged closely to the outer surface of the shell 21, so that the space around the shell 21 can be fully utilized. Moreover, since the second pipe section 42 is closer to the input end 31, its cross-sectional area is small and the tube diameter is thin, the second pipe section 42 can even be arranged closely around the shell 21, thereby further increasing the tube cavity length of the sound guide tube 40, thereby making the overall structure of the speaker assembly formed by the two parts compact.
[0124] Optionally, when the first pipe section 41 and the second pipe section 42 are connected, bonding or socket connection can also be adopted; or, the first pipe section 41 and the second pipe section 42 are directly integrally formed by injection molding or by 3D printing technology.
[0125] FIG5 is a schematic diagram of another example of the speaker module 20 and the sound guide tube 40 in the embodiment of the present application.
[0126] As shown in Figure 5, in an embodiment provided in the present application, the sound guide tube 40 also includes a third tube segment 43, the first tube segment 41 is connected to the sound outlet 11 through the third tube segment 43, and the third tube segment 43 is bent to compensate for the position deviation of the tube mouth of the first tube segment 41 relative to the sound outlet 11.
[0127] As in the aforementioned embodiment, since the second tube section 42 is added between the first tube section 41 and the housing 21, the first tube section 41 can be guided toward the inner surface of the housing 10 by the second tube section 42 for placement, thereby conveniently adhering the first tube section 41 to the inner surface of the housing 10. Since the first tube section 41 is placed on the inner surface of the housing 10, the orientation of the tube opening of the first tube section 41 is restricted, i.e., the tube opening of the first tube section 41 can only be aligned with the sound outlet 11 directly opposite the sound outlet 11 on the housing 10. For example, in the case shown in FIG. 4 , if the tube opening of the first tube section 41 is horizontally oriented to the left, it can only be aligned with the sound outlet 11 on the left side of the housing 10, thereby limiting the placement of the sound outlet 11 of the electronic device.
[0128] In addition to the above problems, the first pipe section 41 also has a technical problem of being easily detached. The specific reason is: theoretically, during the structural design stage, the pipe mouth of the first pipe section 41 should be precisely aligned with the sound hole 11 and connected, but in the actual production and processing process, it is found that any component has dimensional tolerances that cannot be eliminated, and the result of this dimensional tolerance being reflected in the pipe mouth of the first pipe section 41 and the sound hole 11 is that the pipe mouth of the first pipe section 41 and the sound hole 11 cannot be precisely aligned. During installation, it is necessary to rely on the elastic deformation of the first pipe section 41 to force the pipe mouth of the first pipe section 41 to be aligned and connected with the sound hole 11. In this case, under the action of the rebound force of the first pipe section 41, the connection between the pipe mouth of the first pipe section 41 and the sound hole 11 is always under stress. As mentioned above, when the sound unit 22 vibrates, it will radiate sound waves to the sound guide tube 40. The coupling of the sound waves with the tube body of the sound guide tube 40 will cause the sound guide tube 40 to vibrate. Under the action of these two conditions, the tube mouth of the first tube section 41 is at risk of falling off from the sound outlet 11.
[0129] Therefore, in order to solve the above two problems, in this embodiment, a third pipe section 43 is added between the first pipe section 41 and the outer shell 10. After the third pipe section 43 is bent, it is used to compensate for the position deviation of the pipe mouth of the first pipe section 41 relative to the sound hole 11. Firstly, it can adapt to the layout of the sound holes 11 in different positions, and secondly, it can compensate for the alignment tolerance between the pipe mouth of the first pipe section 41 and the sound hole 11, thereby preventing the pipe mouth of the first pipe section 41 from falling off from the sound hole 11.
[0130] Optionally, the first pipe section 41 and the third pipe section 43 can be prefabricated together in advance, that is, integrally formed through an injection molding process, or integrally formed through 3D printing technology, and then directly connected to the sound outlet 11 of the shell 10 during the assembly process.
[0131] Optionally, during the assembly process, it is determined whether to add the third pipe segment 43 according to actual processing tolerances and installation tolerances. If added, the first pipe segment 41 and the third pipe segment 43 are connected by bonding or socket connection.
[0132] Specifically, the first pipe section 41 can be made of standard parts, while the third pipe section 43 can be made of curved pipes with different curvatures such as 30°, 45°, 60°, and 90°, which can be selected according to actual conditions.
[0133] Optionally, when the first pipe section 41 is bent into an L-shaped structure, an S-shaped structure, or a spiral structure, a second pipe section 42 capable of guiding the first pipe section 41 toward the inner surface of the outer shell 10 can be provided on the first pipe section 41, and a third pipe section 43 can be provided to compensate for the position deviation of the pipe mouth of the first pipe section 41 relative to the sound outlet 11.
[0134] For example, in the sound guide tube 40 shown in Figure 7, the first tube segment 41 is bent into an L-shaped structure, and the two end tube ends of the first tube segment 41 are respectively connected to the second tube segment 42 and the third tube segment 43; in the sound guide tube 40 shown in Figure 8, the first tube segment 41 is bent into an S-shaped structure, and the two end tube ends of the first tube segment 41 are respectively connected to the second tube segment 42 and the third tube segment 43; in the sound guide tube 40 shown in Figure 9, the first tube segment 41 is bent into a spiral structure, and the two end tube ends of the first tube segment 41 are respectively connected to the second tube segment 42 and the third tube segment 43.
[0135] In an embodiment provided in the present application, the cross-sectional shape of the sound guide channel 30 includes one of a circular shape, a rectangular shape, and an elliptical shape.
[0136] When the cross-section of the sound guide channel 30 is circular or elliptical, mid- and low-frequency response is significantly improved. Furthermore, a circular sound guide channel 30 has a much wider sound wave dispersion angle than an elliptical sound guide channel 30. While the elliptical sound guide channel 30 exhibits a peak near the low-end cutoff frequency, the circular sound guide channel 30 maintains a flat frequency response curve.
[0137] In summary, when the cross-sectional shape of the sound guide channel 30 is circular, the electronic device in the embodiment of the present application provides the best sound quality experience for the user when using the speaker.
[0138] In one embodiment provided in the present application, the bends of the first pipe section 41, the second pipe section 42, and the third pipe section 43 are arc-shaped structures. The arc-shaped structures of the bends can allow sound waves to diffuse outward smoothly.
[0139] In one embodiment provided herein, the bends of the first, second, and third tube segments 41, 42, and 43 are right-angled, and reflectors are provided within the tube cavities. To prevent sound waves from being blocked, the reflectors are provided to guide and diffuse the sound waves.
[0140] When using an electronic device, a key factor affecting the sound quality of a speaker is the size of the speaker's rear acoustic cavity 212. A larger rear acoustic cavity 212 improves the low-frequency characteristics of the sound, thereby providing a better sound quality experience. The rear acoustic cavity 212 can be either an open or closed structure.
[0141] If the rear sound cavity 212 adopts an open structure, the internal space of the entire electronic device needs to be used as the rear sound cavity 212, and the volume of the rear sound cavity 212 can be made sufficiently large. However, if the rear sound cavity 212 adopts an open structure, the sound-emitting unit 22 of the speaker will simultaneously radiate sound waves into the interior of the electronic device when vibrating. The coupling of the sound waves with the battery cover or back cover of the electronic device will cause the battery cover or back cover to vibrate, thereby affecting the user's holding experience. In addition, when the user holds the electronic device, they will inevitably press the battery cover or back cover, and the deformation of the battery cover or back cover caused by the pressing will affect the spatial volume of the entire equivalent rear sound cavity 212. The sudden change in the spatial volume of the equivalent rear sound cavity 212 will cause the speaker to produce noise, thereby affecting the user's sound quality experience.
[0142] Taking into account the many disadvantages of the open rear sound cavity 212 and comprehensive considerations, the electronic device in the embodiment of the present application adopts a closed rear sound cavity 212 design, and the volume of the rear sound cavity 212 is made as large as possible.
[0143] Figure 6 is an exploded view of the speaker module 20 in Figure 5. Figure 10 is a schematic diagram of the speaker module 20 and the sound guide tube 40 in Figure 5 from another perspective. Figure 11 is an exploded view of the speaker module 20 in Figure 10.
[0144] As shown in Figures 6, 10 and 11, in an embodiment provided in the present application, the shell 21 includes a front shell 214 and a rear shell 215, the front shell 214 includes a first front shell portion 214a and a second front shell portion 214b protruding from the outer surface of the first front shell portion 214a, the sound unit 22 is arranged at the junction of the first front shell portion 214a and the second front shell portion 214b, so that the sound unit 22 and the second front shell portion 214b are surrounded to form a front sound cavity 211, and the sound unit 22, the first front shell portion 214a and the rear shell 215 are surrounded to form a rear sound cavity 212.
[0145] In this embodiment, the second front shell portion 214b protrudes from the outer surface of the first front shell portion 214a, and the sound unit 22 is disposed at the junction of the first front shell portion 214a and the second front shell portion 214b. The contour of the second front shell portion 214b roughly corresponds to the contour of the sound unit 22, so that the sound unit 22 and the second front shell portion 214b enclose and form the front sound cavity 211. Because the size of the first front shell portion 214a is not limited by the size of the sound unit 22, it can be designed to be flatter and have as large a lateral dimension as possible, thereby forming a sufficiently large rear sound cavity 212 volume with the rear housing 215. This design ensures that the rear sound cavity 212 volume is sufficiently large while reducing the thickness of the entire speaker module 20, meeting the demand for thinner and lighter electronic devices.
[0146] Optionally, the first front shell portion 214a and the second front shell portion 214b may be formed by two parts being sealed and connected; or, the first front shell portion 214a and the second front shell portion 214b may be integrally formed by an injection molding process, or integrally formed by 3D printing technology.
[0147] Optionally, the rear shell 215 may be in the shape of a straight plate, directly covering the opening of the second front shell portion 214b; or, the rear shell 215 may have a flange, docking with the edge of the second front shell portion 214b.
[0148] In an embodiment provided in the present application, the root of the second front shell portion 214b extends toward the rear shell portion 215 to form an annular block 214c, and the sound unit 22 is embedded in the interior of the annular block 214c.
[0149] In this embodiment, the sound unit 22 is embedded in the annular block 214 c , so that the sound unit 22 is easy to assemble with the housing 21 .
[0150] Optionally, the sound unit 22 and the annular block 214c can be interference fit, and the sound unit 22 can be directly supported and fixed in the annular block 214c through the inner side of the annular block 214c; or, the outer side of the sound unit 22 has rubber bumps, and after the sound unit 22 is embedded in the interior of the annular block 214c, the sound unit 22 is fixed in the interior of the annular block 214c by the friction force generated by the rubber bumps.
[0151] Fig. 12 is an enlarged view of point A in Fig. 11. Fig. 13 is an enlarged view of point B in Fig. 11.
[0152] In addition to the above-mentioned methods of embedding and fixing the sound-emitting unit 22 inside the annular block 214c, another method is introduced in an embodiment provided in the present application, as shown in Figures 12 and 13. A protrusion 214d is provided on the inner side of the annular block 214c, and a slot 221 is provided on the outer side of the sound-emitting unit 22. The protrusion 214d can be snapped into the slot 221, so that the sound-emitting unit 22 is fixedly connected to the annular block 214c.
[0153] In another embodiment, the protrusion 214d and the slot 221 can also be interchangeably provided with a base, that is, the slot 221 is opened on the inner side of the annular block 214c, and the protrusion 214d is provided on the outer side of the sound unit 22. The protrusion 214d can be snapped into the slot 221, so that the sound unit 22 is fixedly connected to the annular block 214c.
[0154] Fig. 14 is a cross-sectional view of an example of the speaker module 20 and the sound guide tube 40 in the embodiment of the present application. Fig. 15 is an enlarged view of point C in Fig. 14 .
[0155] As shown in FIG. 11 , FIG. 14 and FIG. 15 , in an embodiment provided in the present application, a step 214 e is further provided on the inner side of the annular block 214 c , and the sound-emitting unit 22 abuts against the step 214 e .
[0156] In this embodiment, the step 214e is mainly used as a positioning mechanism to locate the installation depth of the sound unit 22 in the annular block 214c, thereby preventing the sound unit 22 from being installed too deep and squeezing the volume of the front sound cavity 211.
[0157] Optionally, a sealing member may be provided between the sound-generating unit 22 and the step 214e to ensure a sealed connection between the sound-generating unit 22 and the step 214e.
[0158] Specifically, foam or rubber rings are pressed between the periphery of the sound unit 22 and the step 214e to seal the gap therebetween; adhesive is bonded between the periphery of the sound unit 22 and the step 214e to seal the gap therebetween. Alternatively, adhesive can be used, for example, by at least one of materials having cushioning or adhesive properties, such as glue, tape, or adhesive.
[0159] Due to the presence of the step 214e, a larger contact area can be provided for the sound unit 22 and the annular block 214c, thereby ensuring a sealing effect between the two.
[0160] In electronic devices such as laptops, tablets, and televisions, the edges of the back of their casings 10 (also called back casings, back covers, battery covers, D-shells, etc.) are generally curved. The purpose is, firstly, to achieve a good visual effect. When a user looks at the electronic device from the side, it will feel smaller than the actual thickness, and it will appear very light and thin, thereby improving the appearance of the electronic device. Secondly, it is convenient to take. The curved surface creates a gap 61 between the back of the casing 10 and the desktop 60. When the electronic device is placed on an object such as the desktop 60, the user can easily insert his fingers into the gap 61 between the back of the casing 10 and the desktop 60 when he wants to lift the electronic device. If the back of the casing 10 is a flat structure, the user needs to use his fingers to pick it up, which is very inconvenient to take.
[0161] As previously mentioned, the sound hole 11 can be provided on the front, back, or side of the housing 10. When the sound hole 11 is provided on the back of the housing 10, in order to prevent the sound waves from being blocked by the table 60 and other objects and thus affecting the sound quality, the sound hole 11 is preferably provided on a curved surface, as shown in the following embodiment.
[0162] Figure 16 is a schematic diagram of an example of an electronic device in an embodiment of the present application. Figure 17 is a schematic diagram of the electronic device in an exploded state of the second housing 13 in an embodiment of the present application. Figure 18 is a cross-sectional view taken along line EE in Figure 16. Figure 19 is an enlarged view of point D in Figure 18.
[0163] As shown in FIG. 16 to FIG. 19 , in an embodiment provided in the present application, the housing 10 includes a first housing 12 and a second housing 13 arranged opposite to each other. The edge of the second housing 13 is an arc surface 132 , and the sound outlet 11 is located on the arc surface 132 .
[0164] In this embodiment, the sound hole 11 is located on the curved surface 132 at the edge of the second shell 13. There are two main advantages of setting the sound hole 11 at this position: first, it avoids opening a hole on the first shell 12. Since the first shell 12 is the front of the shell 10, avoiding opening a hole on the front of the shell 10 can improve the appearance of the electronic device; second, the sound hole 11 is located on the curved surface 132 at the edge of the second shell 13, which avoids the sound hole 11 being blocked by the desktop 60, wall, etc. to affect the sound quality.
[0165] Optionally, the electronic device in this embodiment can be an electronic device that needs to be placed on the desktop 60 when in use, such as a laptop computer; or an electronic device that can be placed on the desktop 60 for use, such as a mobile phone and a tablet computer; or an electronic device that is hung against the wall, such as a television, a large screen, or a whiteboard.
[0166] For example, as shown in Figures 16-19, when the electronic device is a laptop computer, the laptop computer has a shell A for setting a logo and a shell B for setting a display screen. It also has a shell C (i.e., a first shell 12) for setting a keyboard 121 and a touchpad, and a shell D (i.e., a second shell 13) for setting a support foot 131. Shells A and B are connected to form a whole, and shells C and D are connected to form another whole. The two wholes are then connected together by a structure such as a rotating shaft to achieve relative rotation. The edge of shell D is an arc surface 132, and the sound outlet 11 is located on the arc surface 132.
[0167] Continuing with FIG19 , the edge of the D-shell has a curved surface 132. This creates a gap 61 between the edge of the D-shell and the desktop 60, allowing the user's fingers to easily fit into gap 61 when lifting the laptop. Furthermore, the sound outlet 11 is also formed on the curved surface 132 of the D-shell, preventing it from being blocked by the desktop 60. Sound waves can flow out of gap 61 and reach the user.
[0168] Optionally, the curved surface 132 is omitted from the D-shell's three edges except for one edge near the hinge. Sound holes 11 can be formed on one or more of the curved surfaces 132 along these three edges. Accordingly, the speaker module 20 and sound guide tube 40 have a corresponding number of curved surfaces 132 connected to the sound holes 11.
[0169] Specifically, as shown in FIG18 , the sound outlet 11 is provided on the curved surface 132 at the edge of the side opposite the rotation axis, that is, closer to the user, which allows the user to better receive sound waves. Furthermore, as shown in FIG19 , since the sound outlet 11 is provided on the curved surface 132, the plane where the opening of the sound outlet 11 is located is inclined relative to the desktop 60. This allows sound waves to be more easily transmitted toward the user when refracted by the desktop 60, making the sound waves more directional and easily received by the user.
[0170] For another example, when the electronic device is a tablet computer, the tablet computer has a first shell 12 for setting a display screen, and a second shell 13 opposite to the first shell 12 . The edges of the second shell 13 are all curved surfaces 132 , and the sound outlet 11 is located on the curved surface 132 .
[0171] Optionally, the sound outlet 11 can be opened on one or more arc surfaces 132 at the four side edges. Correspondingly, the speaker module 20 and the sound guide tube 40 have a corresponding number to connect with the sound outlet 11.
[0172] In this embodiment, the tube mouth of the sound guide tube 40 is connected to the sound outlet 11 located on the arc surface 132. Since the position of the sound outlet 11 is relatively special and is located on a arc surface 132, the sound guide tube 40 needs to add a third tube section 43 to compensate for the position deviation of the tube mouth of the first tube section 41 relative to the sound outlet 11.
[0173] In an embodiment provided in the present application, the front shell 214 is connected to the second shell 13 , and the rear shell 215 is connected to the first shell 12 .
[0174] In another embodiment provided in the present application, the front shell 214 is connected to the first shell 12 , and the rear shell 215 is connected to the second shell 13 .
[0175] Optionally, the front shell 214 and the first shell 12 can be fixedly connected by adhesive bonding, snap-fit connection, bolt connection, etc.; or, the front shell 214 and the first shell 12 are directly integrally formed.
[0176] Optionally, the rear shell 215 and the second shell 13 can be fixedly connected by adhesive bonding, snap-fit connection, bolt connection, etc.; or, the front shell 214 and the first shell 12 can be directly integrally formed.
[0177] The front housing 214 and the first housing 12, and the rear housing 215 and the second housing 13 are all connected in an integrated manner, which can reduce the number of parts, thereby simplifying the process of assembling the electronic device, reducing assembly difficulty and improving assembly efficiency.
[0178] In order to make the speaker module 20 and the sound guide tube 40 closer to the sound outlet 11, as shown in Figure 17, in an embodiment provided in the present application, the speaker module 20 and the sound guide tube 40 are arranged at the edge of the outer shell 10, and the front shell 214 and the sound unit 22 are inclined relative to the surface of the rear shell 215.
[0179] The speaker module 20 and the sound guide tube 40 in this embodiment are arranged at the edge of the shell 10. Compared with being arranged in the middle area of the shell 10, the speaker module 20 and the sound guide tube 40 can be closer to the sound outlet 11, thereby making the overall structure of the speaker assembly formed by these two parts compact. At the same time, it also avoids the space in the middle area for other functional modules, making it easier to optimize the structure inside the electronic device.
[0180] In addition, since the edge of the second shell 13 is a curved surface 132, the thickness of the shell 10 formed by the first shell 12 and the second shell 13 is smaller at the edge, so the front shell 214 and the sound unit 22 need to be tilted relative to the rear shell 215 so that they can be arranged closer to the edge of the shell 10 to leave more space in the middle area.
[0181] As previously mentioned, the through hole 213 can be located on the surface or side of the housing 21, as long as it can communicate with the front sound cavity 211. If the front sound cavity 211 is formed by the second front housing portion 214b, the through hole 213 can be located on the surface or side of the second front housing portion 214b.
[0182] As shown in Figures 14 and 15, in order to prevent the sound guide tube 40 from occupying the space directly below the second front shell portion 214b, in an embodiment provided in the present application, a through hole 213 is opened on the side of the second front shell portion 214b so that the sound guide tube 40 is extended from the side of the second front shell portion 214b.
[0183] In this embodiment, the through hole 213 is opened on the outside of the second front shell portion 214b. As shown in Figure 14, the sound guide tube 40 is extended along the right side of the second front shell portion 214b and will not occupy the space directly below the second front shell portion 214b, thereby reducing the dimensional requirements for the thickness direction of the electronic device (or the shell 10), so that the speaker module 20 can meet the development requirements of lightweight electronic devices. In other words, when the speaker module 20 is installed at the edge of the shell 10, it can be closer to the edge, so that there will be no interference between the arc surface 132 and the sound guide tube 40, making the position arrangement of the speaker module 20 more flexible.
[0184] Optionally, the speaker module 20 and the sound guide tube 40 can be set at any position in the shell 10, such as in the middle area or at the edge of the shell 10, as long as the front sound cavity 211 and the sound outlet 11 can be connected by the sound guide tube 40.
[0185] As shown in FIG. 15 , in an embodiment provided in the present application, the outer surface of the second front shell portion 214 b corresponds to the shape of the arc surface 132 of the second outer shell 13 .
[0186] In this embodiment, the outer surface of the second front shell portion 214b corresponds to the curved surface 132 of the second housing 13, so that the second front shell portion 214b can be tightly attached to the curved surface 132 to maximize the use of the space inside the electronic device (or housing 10).
[0187] In an embodiment provided in the present application, a breathable barrier is provided in the sound outlet 11 .
[0188] In this embodiment, the air-permeable barrier is mainly used to prevent debris in the environment from entering the sound guide hole and then falling into the sound guide tube 40 , thereby effectively protecting the sound guide tube 40 and the speaker module 20 .
[0189] Alternatively, the breathable barrier may be a mesh, a grid, or the like.
[0190] FIG. 20 is a frequency response curve diagram of the speaker of the electronic device in FIG. 17 .
[0191] As shown in Figure 17, in an embodiment provided in the present application, the cross-sectional shape of the sound guide tube 40 is elliptical, and the sound guide tube 40 includes a first tube section 41 with a U-shaped structure, and a second tube section 42 and a third tube section 43 connected at both ends of the first tube section 41, and the third tube section 43 is connected to the sound outlet 11 located on the arc surface 132 of the second shell 13.
[0192] As shown in Figure 20, it can be seen from the frequency response curve of the speaker of the electronic device in this embodiment that in the mid-low frequency band of 100Hz-3000Hz, the speaker with the sound guide tube 40 in the embodiment of the present application has a sound pressure level greater than that of the speaker with a traditional sound output channel structure, showing higher sensitivity, and can have better performance in analyzing the sounds of most musical instruments and human voices, which can enhance the user's listening experience in the mid-low frequency band.
[0193] Finally, it should be noted that the above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.
Claims
1. An electronic device, characterized in that: include: The housing (10) is provided with a sound outlet hole (11) for connecting the interior of the housing (10) with the outside; A speaker module (20) is disposed in the housing (10), the speaker module (20) comprising a housing (21) and a sound unit (22) disposed in the housing (21), the sound unit (22) and the housing (21) forming a front sound cavity (211), and the housing (21) is provided with a through hole (213) for connecting the front sound cavity (211) with the interior of the housing (10); The sound guide channel (30) comprises an input end (31) for receiving sound waves and a diffusion end (32) for diffusing sound waves. The input end (31) of the sound guide channel (30) is connected to the front sound cavity (211) through the through hole (213), and the diffusion end (32) is connected to the outside world through the sound outlet hole (11). The cross-sectional area of the sound guide channel (30) gradually increases from the input end (31) to the diffusion end (32).
2. The electronic device according to claim 1, wherein Also includes: A sound guide tube (40), wherein the lumen of the sound guide tube (40) constitutes the sound guide channel (30).
3. The electronic device according to claim 2, wherein: The sound guide tube (40) comprises a first tube section (41), one end of the first tube section (41) is connected to the sound outlet hole (11) of the housing (10), and the other end is connected to the through hole (213) of the shell (21), and the first tube section (41) is bent in a circuitous manner as a whole.
4. The electronic device according to claim 3, wherein: The first pipe section (41) is bent into an L-shaped structure, a U-shaped structure, an S-shaped structure or a spiral structure.
5. The electronic device according to claim 3 or 4, characterized in that: The sound guide tube (40) further includes a second tube section (42), the first tube section (41) is connected to the through hole (213) via the second tube section (42), and the second tube section (42) is bent and tightly arranged on the outer surface of the shell (21).
6. The electronic device according to claim 5, characterized in that The sound guide tube (40) further includes a third tube section (43), the first tube section (41) is connected to the sound outlet (11) via the third tube section (43), and the third tube section (43) is bent to compensate for the positional deviation of the tube opening of the first tube section (41) relative to the sound outlet (11).
7. The electronic device according to any one of claims 2 to 6, characterized in that: The sound guide tube (40) and the housing (10) are bonded by adhesive or connected by a tube clamp fixing seat.
8. The electronic device according to any one of claims 1 to 7, characterized in that: The cross-sectional shape of the sound guide channel (30) includes one of a circular shape, a rectangular shape, and an elliptical shape.
9. The electronic device according to any one of claims 2 to 7, characterized in that: The shell (21) includes a front shell (214) and a rear shell (215), the front shell (214) includes a first front shell portion (214a) and a second front shell portion (214b) protruding from the outer surface of the first front shell portion (214a), the sound unit (22) is arranged at the connection between the first front shell portion (214a) and the second front shell portion (214b), so that the sound unit (22) and the second front shell portion (214b) are surrounded to form the front sound cavity (211), and the sound unit (22), the first front shell portion (214a) and the rear shell (215) are surrounded to form the rear sound cavity (212).
10. The electronic device according to claim 9, characterized in that The root of the second front shell portion (214b) extends toward the rear shell portion (215) to form an annular block (214c), and the sound-generating unit (22) is embedded in the interior of the annular block (214c).
11. The electronic device according to claim 10, characterized in that A protrusion (214d) is provided on the inner side of the annular block (214c) and one of the sound-generating units (22), and a slot (221) is provided on the other of the two. The protrusion (214d) can be snapped into the slot (221) to connect the sound-generating unit (22) to the annular block (214c).
12. The electronic device according to claim 11, wherein: The inner side of the annular block (214c) is further provided with a step (214e) which surrounds the ring, and the sound-generating unit (22) abuts against the step (214e).
13. The electronic device according to any one of claims 9 to 12, characterized in that: The housing (10) comprises a first housing (12) and a second housing (13) that are arranged opposite to each other; the edge of the second housing (13) is a curved surface (132); and the sound outlet (11) is located on the curved surface (132).
14. The electronic device according to claim 13, wherein: The front shell (214) is connected to the second shell (13), and the rear shell (215) is connected to the first shell (12).
15. The electronic device according to claim 14, characterized in that The speaker module (20) and the sound guide tube (40) are arranged at the edge of the housing (10), and the front shell (214) and the sound generating unit (22) are arranged at an angle relative to the surface of the rear shell (215).
16. The electronic device according to claim 15, characterized in that The through hole (213) is located on the side of the second front shell portion (214b), so that the sound guide tube (40) is extended from the side of the second front shell portion (214b).
17. The electronic device according to claim 15, characterized in that The outer surface of the second front shell portion (214b) corresponds to the shape of the arc surface (132) of the second outer shell (13).
18. The electronic device according to any one of claims 1 to 17, characterized in that: An air-permeable barrier is provided in the sound outlet hole (11).