electronic devices
By connecting the rear cavity of the speaker to the inside of the motor, and utilizing the space of the motor to expand the rear cavity of the speaker, the problem of poor sound quality in the thin and light design of the speaker is solved, and the sound quality of the speaker is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING XIAOMI MOBILE SOFTWARE CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-07-31
AI Technical Summary
In electronic devices, the reduction in speaker space due to the trend towards thinner and lighter designs results in a smaller rear cavity and poorer sound quality.
By connecting the rear cavity of the speaker to the interior of the motor, the internal space of the motor is used as an expansion space, allowing sound waves to enter the motor and increasing the rear cavity space of the speaker.
It improves the low-frequency characteristics of the speaker, enhances the sound quality, and increases the low-frequency sensitivity of the speaker by 1.5-1.8 dB.
Smart Images
Figure CN224583306U_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of loudspeaker technology, and more particularly to an electronic device. Background Technology
[0002] Speakers are crucial components in electronic devices, used to play audio. As electronic devices (such as mobile phones and tablets) become increasingly feature-rich, the batteries and motherboards within them are growing larger. Furthermore, electronic devices are trending towards thinner and lighter designs. This results in less space available to house the speakers within the devices.
[0003] However, reducing the size of the speaker results in a smaller rear cavity, leading to poorer sound quality. Therefore, ensuring a large rear cavity within a limited space is a key challenge that needs to be addressed. Utility Model Content
[0004] This disclosure provides an electronic device that can solve the technical problems existing in the related art. The technical solution of the electronic device is as follows.
[0005] This disclosure provides an electronic device, which includes a speaker and a motor;
[0006] The loudspeaker includes a housing assembly and a sound-emitting assembly. The housing assembly has a receiving cavity inside, and the sound-emitting assembly is located inside the receiving cavity, dividing the receiving cavity into a front cavity and a rear cavity.
[0007] The motor is located outside the receiving cavity. The side wall of the rear cavity has a first through hole, and the side wall of the motor has a second through hole. The interior of the motor and the rear cavity are connected through the first through hole and the second through hole.
[0008] In one possible implementation, the housing assembly includes a first bottom shell, a second bottom shell, and a cover plate;
[0009] The first bottom shell and the second bottom shell are arranged side by side and connected. A receiving cavity is formed between the cover plate and the first bottom shell. The sound-producing component is located between the first bottom shell and the cover plate. The motor is fixed to the second bottom shell.
[0010] In one possible implementation, the second bottom shell has a convex ring, and the motor is confined to the inside of the convex ring;
[0011] The sidewall of the convex ring has a third through hole, which is opposite to the second through hole, and the first through hole, the third through hole and the second through hole are connected in sequence.
[0012] In one possible implementation, the length of the third through hole is greater than the length of the second through hole, and the width of the third through hole is greater than the width of the second through hole.
[0013] In one possible implementation, the sidewall of the cover plate has a protrusion;
[0014] The sidewall of the protrusion away from the cover plate abuts against the outer wall of the motor. The third through hole has an opening on the side away from the second bottom shell. The protrusion closes the opening of the third through hole on the sidewall facing the second bottom shell.
[0015] In one possible implementation, the outer side of the protrusion where it abuts the motor, and the outer side of the protruding ring where it abuts the motor, are coated with an adhesive layer.
[0016] In one possible implementation, the distance between the protrusion and the first bottom shell is 1.2mm-1.4mm.
[0017] In one possible implementation, the length of the third through hole is less than the length of the protrusion.
[0018] In one possible implementation, the gap between the outer wall of the cover plate and the outer wall of the motor is 0.8 mm to 1 mm.
[0019] In one possible implementation, the length of the second through hole is 1.4mm-1.6mm and the width is 0.25mm-0.35mm.
[0020] The technical solution provided in this disclosure includes at least the following beneficial effects:
[0021] This disclosure provides an electronic device in which the interior of a motor is connected to the rear cavity of a speaker, allowing sound waves emitted by the sound-emitting component to enter the interior of the motor through the rear cavity. This allows the space inside the motor to be considered an expansion space of the rear cavity, resulting in a larger rear cavity space for the speaker. This improves the low-frequency characteristics of the speaker, thereby enhancing its sound quality.
[0022] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description
[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. In the drawings:
[0024] Figure 1 This is a schematic diagram of the structure of a speaker and a motor shown in an embodiment of this disclosure;
[0025] Figure 2 This is a cross-sectional view of a speaker and a motor shown in an embodiment of this disclosure;
[0026] Figure 3 This is a partial enlarged view of a speaker and a motor shown in an embodiment of this disclosure;
[0027] Figure 4 This is an exploded view of a speaker and a motor shown in an embodiment of this disclosure;
[0028] Figure 5 This is a partial structural schematic diagram of an electronic device according to an embodiment of the present disclosure;
[0029] Figure 6 This is a partial structural schematic diagram of an electronic device according to an embodiment of the present disclosure;
[0030] Figure 7 This is a schematic diagram of the structure of a motor shown in an embodiment of this disclosure.
[0031] Legend:
[0032] 1. Speaker; 10. Receiving cavity; 101. Front cavity; 102. Rear cavity; 1021. First through hole; 11. Housing assembly; 111. First bottom shell; 112. Second bottom shell; 1121. Protruding ring; 11211. Third through hole; 113. Cover plate; 1131. Protrusion; 12. Sounding assembly;
[0033] 2. Motor; 21. Second through hole;
[0034] 100. Adhesive layer.
[0035] The accompanying drawings have illustrated specific embodiments of this disclosure, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this disclosure to those skilled in the art through reference to particular embodiments. Detailed Implementation
[0036] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings.
[0037] The terminology used in the embodiments of this disclosure is for illustrative purposes only and is not intended to limit the disclosure. Unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “a” or “one,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising,” “including,” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected,” “linked,” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.
[0038] Speakers are crucial components in electronic devices, used to play audio. As electronic devices (such as mobile phones and tablets) become increasingly feature-rich, the batteries and motherboards within them are growing larger. Furthermore, electronic devices are trending towards thinner and lighter designs. This results in less space available to house the speakers within the devices.
[0039] However, reducing the size of the speaker results in a smaller rear cavity, leading to poorer sound quality. Therefore, ensuring a large rear cavity within a limited space is a key challenge that needs to be addressed.
[0040] In view of the above-mentioned technical problems, embodiments of this disclosure provide an electronic device, such as... Figures 1-3 As shown, the electronic device includes a speaker 1 and a motor 2. The speaker 1 includes a housing assembly 11 and a sound-emitting assembly 12. The housing assembly 11 has a receiving cavity 10 inside, and the sound-emitting assembly 12 is located inside the receiving cavity 10, dividing the receiving cavity 10 into a front cavity 101 and a rear cavity 102. The motor 2 is located outside the receiving cavity 10. The side wall of the rear cavity 102 has a first through hole 1021, and the side wall of the motor 2 has a second through hole 21. The interior of the motor 2 and the rear cavity 102 communicate through the first through hole 1021 and the second through hole 21.
[0041] The speaker 1 and motor 2 can be fixed to the mid-frame of the electronic device. The sound-producing component 12 of the speaker 1 includes components such as a cone, frame, voice coil, and magnet. The rear cavity 102 can correct low-frequency sounds, improving the sound quality and loudness of the speaker 1. The larger the volume of the rear cavity 102, the better the low-frequency performance of the speaker 1.
[0042] Motor 2 can be a linear motor or a rotor motor. Motor 2 includes a housing and a vibrating element, with the vibrating element located inside the housing and a second through hole 21 located on the housing. When motor 2 is working, it can cause the electronic device to vibrate.
[0043] Electronic devices can be mobile phones or tablets, etc.
[0044] The technical solution provided in this embodiment connects the interior of the motor 2 to the rear cavity 102 of the speaker 1, allowing sound waves emitted by the sound-emitting component 12 to enter the interior of the motor 2 through the rear cavity 102. This allows the interior space of the motor 2 to be considered an expanded space of the rear cavity 102, resulting in a larger rear cavity space for the speaker 1. This improves the low-frequency characteristics of the speaker 1, thereby enhancing its sound quality.
[0045] Calculations and experiments show that the volume of the redundant space inside motor 2 is between 0.15cc and 0.2cc, which can improve the low-frequency sensitivity of speaker 1 by 1.5-1.8dB.
[0046] In some examples, such as Figure 2 and Figure 4 As shown, the housing assembly 11 includes a first bottom shell 111, a second bottom shell 112, and a cover plate 113. The first bottom shell 111 and the second bottom shell 112 are arranged side by side and connected, and a receiving cavity 10 is formed between the cover plate 113 and the first bottom shell 111. The sound-producing assembly 12 is located between the first bottom shell 111 and the cover plate 113, and the motor 2 is fixed to the second bottom shell 112. In this way, the speaker 1 and the motor 2 can be combined into a single module, which helps to reduce the space occupied by the speaker 1 and the motor 2.
[0047] The sound-producing component 12 forms a front cavity 101 between itself and the cover plate 113, and the sound-producing component 12 forms a rear cavity 102 between itself and the first bottom shell 111.
[0048] Of course, in another example, the motor 2 may not be fixed to the bottom shell 111, but may be fixed directly to the middle frame. This disclosure does not specifically limit this embodiment.
[0049] In some examples, such as Figure 4 and Figure 5As shown, the second bottom shell 112 has a protruding ring 1121, and the motor 2 is confined to the inner side of the protruding ring 1121, thereby positioning the motor 2 on the second bottom shell 112. To prevent the protruding ring 1121 from obstructing the second through hole 21 of the motor 2, the side wall of the protruding ring 1121 has a third through hole 11211. The third through hole 11211 is opposite to the second through hole 21, and the first through hole 1021, the third through hole 11211, and the second through hole 21 are connected in sequence.
[0050] After the sound-generating component 12 generates sound waves, the sound waves pass sequentially through the first through-hole 1021, the third through-hole 11211, and the second through-hole 21, and then enter the interior of the motor 2. This allows the motor 2 to further improve the low-frequency characteristics of the sound waves, thereby giving the speaker 1 better sound quality.
[0051] For example, the length of the third through hole 11211 is greater than the length of the second through hole 21, and the width of the third through hole 11211 is greater than the width of the second through hole 21, thereby preventing the sound waves from being blocked by the convex ring 1121 during the process of entering the motor 2.
[0052] In some examples, such as Figure 3 and Figure 6 As shown, the sidewall of the cover plate 113 has a protrusion 1131, and the sidewall of the protrusion 1131 away from the cover plate 113 abuts against the outer wall of the motor 2. The third through hole 11211 has an opening on the side opposite to the second bottom shell 112, and the protrusion 1131 closes the opening of the third through hole 11211 on the sidewall facing the second bottom shell 112. The area enclosed between the protrusion 1131 and the second bottom shell 112 can be regarded as an extended channel, through which the sound waves generated by the sound-generating assembly 12 can enter the interior of the motor 2.
[0053] The cover plate 113 and the protrusion 1131 are an integral structure, which can enhance the connection strength between the cover plate 113 and the protrusion 1131.
[0054] In other examples, the outer wall of the motor 2 may have a protrusion that abuts against the outer wall of the cover plate 113.
[0055] In other examples, the protrusion 1131 is annular, and the two ends of the annular protrusion 1131 surround the first through hole 1021 and the second through hole 21, respectively. The area enclosed by the inner side of the annular protrusion 1131 is the extension channel. The sound wave enters the interior of the motor 2 through the first through hole 1021, the inner side of the protrusion 1131, and the second through hole 21 in sequence.
[0056] Alternatively, in some examples, the sidewall of the cover plate 113 can fit against the outer wall of the motor 2, and the first through hole 1021 is opposite to the second through hole 21, so that the first through hole 1021 and the second through hole 21 can be connected without the need to provide an extension channel.
[0057] In some examples, such as Figure 1 and Figure 3 As shown, the outer side of the contact point between the protrusion 1131 and the motor 2, and the outer side of the contact point between the protrusion 1121 and the motor 2 are coated with an adhesive layer 100. This enhances the seal between the speaker 1 and the motor 2, preventing sound wave leakage during transmission to the motor 2. This results in better sound quality for the speaker 1.
[0058] For example, the thickness of the adhesive layer 100 is 0.8mm-1mm. If the adhesive layer 100 is too thin, it may affect the seal between the speaker 1 and the motor 2. If the adhesive layer 100 is too thick, it will increase the overall weight of the electronic device.
[0059] In some examples, such as Figure 6 As shown, the distance H between the protrusion 1131 and the bottom shell 111 is 1.2mm-1.4mm. If H is too small, it will be difficult for sound waves to enter the interior of the motor 2.
[0060] In some examples, the length of the third through-hole 11211 is longer than the length of 1131. This prevents sound waves from leaking during transmission to the third through-hole 11211. As a result, the electronic device can achieve better sound quality.
[0061] In some examples, such as Figure 3 As shown, the gap D between the outer wall of the cover plate 113 and the outer wall of the motor 2 is 0.8mm-1mm. That is, the length of the protrusion 1131 is 0.8mm-1mm. This allows the speaker 1 and the motor 2 to occupy a smaller overall space. If D is too small, it will be difficult to apply the adhesive layer 100, which is not conducive to improving the sealing between the motor 2 and the speaker 1. If D is too large, it will result in the motor 2 and the speaker 1 occupying a larger overall space.
[0062] In some examples, such as Figure 7 As shown, the length L1 of the second through hole 21 is 1.4mm-1.6mm, and the width L2 is 0.25mm-0.35mm. If L1 and L2 are too small, it will be difficult for sound waves to enter the interior of the motor 2.
[0063] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this disclosure should be included within the protection scope of this disclosure.
Claims
1. An electronic device, comprising: The electronic device includes a speaker (1) and a motor (2); The loudspeaker (1) includes a housing assembly (11) and a sound-producing assembly (12). The housing assembly (11) has a receiving cavity (10) inside. The sound-producing assembly (12) is located inside the receiving cavity (10) and divides the receiving cavity (10) into a front cavity (101) and a rear cavity (102). The motor (2) is located outside the receiving cavity (10). The side wall of the rear cavity (102) has a first through hole (1021) and the side wall of the motor (2) has a second through hole (21). The interior of the motor (2) and the rear cavity (102) are connected through the first through hole (1021) and the second through hole (21).
2. The electronic device of claim 1, wherein, The housing assembly (11) includes a first bottom shell (111), a second bottom shell (112), and a cover plate (113); The first bottom shell (111) and the second bottom shell (112) are arranged side by side and connected. The receiving cavity (10) is formed between the cover plate (113) and the first bottom shell (111). The sound-producing component (12) is located between the first bottom shell (111) and the cover plate (113). The motor (2) is fixed to the second bottom shell (112).
3. The electronic device of claim 2, wherein, The second bottom shell (112) has a convex ring (1121), and the motor (2) is located inside the convex ring (1121); The sidewall of the convex ring (1121) has a third through hole (11211), which is opposite to the second through hole (21). The first through hole (1021), the third through hole (11211), and the second through hole (21) are connected in sequence.
4. The electronic device of claim 3, wherein, The length of the third through hole (11211) is greater than the length of the second through hole (21), and the width of the third through hole (11211) is greater than the width of the second through hole (21).
5. The electronic device of claim 3, wherein, The sidewall of the cover plate (113) has a protrusion (1131); The protrusion (1131) abuts against the outer wall of the motor (2) on the side away from the cover plate (113), and the third through hole (11211) has an opening on the side away from the second bottom shell (112). The protrusion (1131) closes the opening of the third through hole (11211) on the side facing the second bottom shell (112).
6. The electronic device of claim 5, wherein, The outer side of the contact point between the protrusion (1131) and the motor (2), and the outer side of the contact point between the protruding ring (1121) and the motor (2) are coated with an adhesive layer (100).
7. The electronic device of claim 5, wherein, The distance (H) between the protrusion (1131) and the first bottom shell (111) is 1.2mm-1.4mm.
8. The electronic device of claim 5, wherein, The length of the third through hole (11211) is less than the length of the protrusion (1131).
9. The electronic device of claim 2, wherein, The gap (D) between the outer wall of the cover plate (113) and the outer wall of the motor (2) is 0.8mm-1mm.
10. The electronic device of claim 1, wherein, The length (L1) of the second through hole (21) is 1.4mm-1.6mm and the width (L2) is 0.25mm-0.35mm.