Sounder and electronic equipment

Abstract

The utility model relates to the technical field of electronic equipment, in particular to a sounder and electronic equipment. The purpose of the utility model is to ensure the sensitivity of the sounder while reducing the thickness of the sounder. According to the sounder, the damper and the supporting frame are arranged on the inner side of the voice coil assembly, and the damper is connected with the magnetic circuit system and the supporting frame, so that the space reserved by the voice coil assembly for vibration of the damper is saved, and the thickness of the sounder is only related to the magnetic circuit system, the amplitude space of the vibrating diaphragm and the thickness of the vibrating diaphragm; therefore, the overall thickness of the sounder can be reduced. Besides, the damper and the supporting frame are arranged on the inner side of the voice coil assembly, so that the weight of the supporting frame can be reduced, the sensitivity of the sounder is improved, the voice coil assembly is not restricted by the damper assembly any more, the position of the voice coil assembly can be flexibly adjusted, the voice coil assembly can be connected with the optimal stress point of the vibrating diaphragm, segmentation motion is effectively inhibited, and the sound production efficiency is improved. A high-frequency curve becomes smoother, and the bandwidth of the sounder is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of electronic equipment technology, specifically to a sound generator and electronic equipment. Background Technology

[0002] Voice transmitters, as transducers that efficiently convert electrical signals into sound signals, are widely used in electronic devices such as mobile phones, computers, and headphones, becoming an important component for transmitting audio information. With the rapid development of these electronic devices, consumers have placed more stringent demands on the performance of voice transmitters, not only pursuing high sensitivity to ensure clear and accurate sound transmission, but also pursuing thin and light designs to adapt to the trend of integration and slimness in electronic products.

[0003] Currently, sound generators mainly include cone-shaped sound generators and flat-panel sound generators. Cone-shaped sound generators, such as... Figure 1 As shown, this microphone is known for its high sensitivity, capable of accurately reproducing audio signals and providing listeners with a delicate and realistic auditory experience. However, because both the diaphragm and the spider in this microphone are connected to the voice coil assembly, sufficient vibration space must be reserved for the spider to ensure that it does not collide with other parts of the microphone when the voice coil assembly vibrates (i.e., undershooting). This results in an increase in the overall thickness of the microphone, limiting the application of cone-shaped microphones in integrated and thin electronic devices. Planar microphones, such as... Figure 2 As shown, compared to cone-shaped microphones, this flat-panel microphone is thinner, which can meet the requirements of electronic devices for integration and thinness. However, because the support frame of the spider is located on the outside of the voice coil assembly, the size of the support frame is too large, resulting in excessive weight of the support frame, which in turn affects the sensitivity of the microphone.

[0004] Accordingly, a new technical solution is needed in this field to solve the above problems. Utility Model Content

[0005] To address at least one of the aforementioned problems in the prior art, namely, how to improve the sensitivity of a sound generator while reducing its thickness, this application provides a sound generator comprising:

[0006] Sink stand;

[0007] A magnetic circuit system, which is housed within the basket and has a magnetic gap;

[0008] A vibration system includes a diaphragm assembly disposed on the frame, and a voice coil assembly and a spider assembly housed within the frame. One end of the voice coil assembly is suspended in the magnetic gap, and the other end is connected to the diaphragm assembly. The spider assembly includes a spider located inside the voice coil assembly and a support frame. One end of the spider is connected to the magnetic circuit system, and the other end is connected to the diaphragm through the support frame.

[0009] In the preferred embodiment of the above-mentioned sound generator, the magnetic circuit system includes a first magnetic circuit portion and a second magnetic circuit portion, and the magnetic gap is formed between the first magnetic circuit portion and the second magnetic circuit portion. The first magnetic circuit portion is located outside the voice coil assembly, and the second magnetic circuit portion is located inside the voice coil assembly and connected to the spider.

[0010] In the preferred embodiment of the above-mentioned sound generator, the first magnetic circuit portion includes a stacked magnet and a first magnetic conductive element, and the second magnetic circuit portion includes a second magnetic conductive element;

[0011] The magnet and the first magnetic conductive element are arranged around the second magnetic conductive element and are spaced apart from the second magnetic conductive element to form the magnetic gap;

[0012] The second magnetic conductor is arranged around the spring, and its inner wall is connected to the spring.

[0013] In the preferred embodiment of the above-mentioned sound generator, the second magnetic circuit portion further includes a third magnetic conductor, which is disposed around the second magnetic conductor and extends along the second magnetic conductor in a direction away from the spring wave; the magnet is disposed on the third magnetic conductor.

[0014] In the preferred embodiment of the above-mentioned sound generator, the cross-section of the spring wave is zigzag, arc-shaped, or straight.

[0015] In the preferred embodiment of the above-mentioned sound generator, the spring wave is provided with at least one through hole.

[0016] In the preferred embodiment of the above-mentioned sound generator, the material of the spring wave is metal, plastic, rubber, fabric, or fiber.

[0017] In the preferred embodiment of the above-mentioned sound generator, a mounting hole is provided at the end of the frame away from the diaphragm, and the magnetic circuit system is provided in the mounting hole.

[0018] In the preferred embodiment of the above-mentioned sound generator, the diaphragm includes a diaphragm and a folded ring arranged around the diaphragm, and the diaphragm is arranged on the frame through the folded ring.

[0019] This application also provides an electronic device, which includes the sound generator described in any of the above preferred technical solutions.

[0020] Those skilled in the art will understand that the generator of this invention, by placing the spider and support frame inside the voice coil assembly and connecting the spider to the magnetic circuit system and support frame, eliminates the space reserved in the voice coil assembly for the spider's vibration. This means the generator's thickness is only related to the magnetic circuit system, the diaphragm's amplitude space, and the diaphragm thickness, thus reducing the overall thickness of the generator. Furthermore, by placing the spider and support frame inside the voice coil assembly, not only is the weight of the support frame reduced and the generator's sensitivity improved, but the voice coil assembly is also no longer constrained by the spider assembly. This allows for flexible adjustment of the voice coil assembly's position, enabling it to connect with the diaphragm's optimal stress point, thereby suppressing split-frequency operation, smoothing the high-frequency curve, extending the generator's bandwidth, and improving the generator's overall performance.

[0021] Furthermore, by placing the first magnetic circuit portion outside the second magnetic circuit portion, and the two forming a magnetic gap for suspending the voice coil assembly, it is beneficial for the voice coil assembly to move within the magnetic gap to cut magnetic field lines after being energized, thereby driving the diaphragm to vibrate and produce sound.

[0022] Furthermore, by arranging the magnet and the first magnetic conductor around the second magnetic conductor, and creating a magnetic gap between them, a uniform and stable magnetic field environment is generated. This ensures that the voice coil assembly experiences a stable magnetic force during vibration, thereby guaranteeing the stability and clarity of the speaker's sound quality. In addition, arranging the second magnetic conductor around the spider increases the space available for the spider, facilitating the placement of the spider and support frame within the space enclosed by the second magnetic conductor. This reduces the weight of the support frame and improves the speaker's sensitivity.

[0023] Furthermore, by providing a mounting hole at the end of the frame away from the diaphragm, and installing a magnetic circuit system inside the mounting hole, the thickness of the sound generator can be reduced, which is beneficial for making the sound generator thinner and lighter. Attached Figure Description

[0024] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0025] Figure 1 This is a cross-sectional schematic diagram of a cone-shaped sound generator in the prior art;

[0026] Figure 2 This is a cross-sectional schematic diagram of a flat-panel sound generator in the prior art;

[0027] Figure 3 This is a schematic diagram of the structure of the sound generator of this application;

[0028] Figure 4This is a cross-sectional schematic diagram of the sound generator of this application;

[0029] Figure 5 This is a partial cross-sectional schematic diagram of the sound generator of this application;

[0030] Figure 6 yes Figure 5 A schematic diagram of the structure of a ballistic wave;

[0031] Figure 7 This is a partial cross-sectional schematic diagram of the first embodiment of the sound generator of this application;

[0032] Figure 8 yes Figure 7 A schematic diagram of the structure of a ballistic wave;

[0033] Figure 9 This is a partial cross-sectional schematic diagram of the second embodiment of the sound generator of this application;

[0034] Figure 10 yes Figure 9 A schematic diagram of the structure of a ballistic wave;

[0035] Figure 11 This is a schematic diagram of diaphragm vibration when the voice coil assembly is in different positions in this application;

[0036] Figure 12 This is the frequency response curve of the sound generator in this application.

[0037] The attached figures are labeled as follows:

[0038] 1. Basket; 11. Mounting hole; 2. Magnetic circuit system; 21. Magnet; 22. First magnetic conductor; 23. Second magnetic conductor; 24. Third magnetic conductor; 25. Magnetic gap; 3. Vibration system; 31. Diaphragm assembly; 311. Diaphragm; 312. Surround; 32. Voice coil assembly; 33. Spider assembly; 331. Spider; 3311. Through hole; 332. Support frame. Detailed Implementation

[0039] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0040] It should be noted that in the description of this application, the terms "upper", "lower", "inner", "top", "bottom", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0041] Furthermore, it should be noted that, in the description of this application, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] like Figure 3-4 As shown, the sound generator of this application includes a frame 1, a magnetic circuit system 2, and a vibration system 3. The frame 1 has a plate-like structure, which helps to reduce the thickness of the sound generator, allowing it to be used in miniaturized and thin electronic devices. The frame 1 has an internal cavity, and its top is open to facilitate the installation of the vibration system 3. A mounting hole 11 is provided at the bottom to facilitate the installation of the magnetic circuit system 2.

[0043] In this application, thickness refers to Figure 4 , 5 The dimensions in the vertical direction are shown in 7 and 9.

[0044] It should be noted that the specific configuration of the basin stand 1 in this application is not fixed, and those skilled in the art can adjust it as needed. For example, the bottom of the basin stand 1 may be a closed structure, i.e., no mounting holes 11 are provided.

[0045] See next Figure 4 , 5 7, 9. The vibration system 3 includes a diaphragm assembly 31, a voice coil assembly 32, and a spider assembly 33. The magnetic circuit system 2 includes a first magnetic circuit section and a second magnetic circuit section. The first magnetic circuit section includes a stacked magnet 21 and a first magnetic conductor 22, which is a washer positioned above the magnet 21. The second magnetic circuit section includes a second magnetic conductor 23, which is an iron block. Both the magnet 21 and the washer are ring-shaped structures and are fitted onto the second magnetic conductor 23. The ring-shaped structure formed by the magnet 21 and the washer is spaced apart from the second magnetic conductor 23, forming a magnetic gap 25. The voice coil assembly 32 includes a ring-shaped frame and a coil surrounding the frame. One end of the frame is connected to the diaphragm assembly 31, and the other end is suspended in the magnetic gap 25. This allows the magnetic field generated when the coil is energized to interact with the magnetic field generated by the magnetic circuit system 2. This interaction enables the voice coil assembly 32 to move within the magnetic gap 25 and drive the diaphragm 311 to vibrate, thereby producing sound.

[0046] It should be noted that washer fluid is also called iron block; it's just a difference in name.

[0047] See next Figure 4 , 57, 9. The second magnetic circuit section also includes a third magnetic guide 24, which is an iron block and integrally formed with the second magnetic guide 23. The third magnetic guide 24 is arranged around the second magnetic guide 23 and extends along the second magnetic guide 23 in a direction away from the voice coil assembly 32. A magnet 21 is provided on the third magnetic guide 24, and the third magnetic guide 24 is connected to the mounting hole 11 at the bottom of the frame 1, so that the magnetic circuit system 2 is mounted on the frame 1. The bottom of the third magnetic guide 24 is flush with the bottom of the frame 1, which can further reduce the thickness of the speaker. In addition, the second magnetic guide 23 is annular, and the second magnetic circuit section formed by the second magnetic guide 23 and the third magnetic guide 24 is a T-shaped iron. This second magnetic guide section can increase the installation space of the spider assembly 33, which is beneficial for the spider assembly 33 to be placed inside the second magnetic guide 23, thereby reducing the weight of the support frame 332 and improving the sensitivity of the speaker.

[0048] Of course, the shape of the second magnetic circuit portion is not fixed in this application, and those skilled in the art can adjust it as needed. For example, if the second magnetic circuit portion is cylindrical, that is, the second magnetic circuit portion only includes the second magnetic conductor 23, then the second magnetic conductor 23 is connected to the mounting hole 11 at the bottom of the basin holder 1, and the magnet 21 is set at the bottom of the receiving cavity, so that the magnetic circuit system 2 is installed on the basin holder 1.

[0049] See next Figure 3-4 The diaphragm assembly 31 includes a diaphragm 311 and a folded ring 312. The diaphragm 311 has a plate-like structure, which, compared with the cone-shaped diaphragm in a cone-shaped microphone, can reduce the thickness of the vibration system 3, thereby reducing the overall thickness of the microphone. The folded ring 312 is U-shaped, with one end connected to the diaphragm 311 and the other end connected to the frame 1, so that the diaphragm 311 is installed at the opening of the frame 1, which also reduces the thickness of the vibration system 3, thereby reducing the overall thickness of the microphone.

[0050] It should be noted that this application does not limit the connection method of the folding ring 312 to the diaphragm 311 and the frame 1, as long as the folding ring 312 can be connected to the diaphragm 311 and the frame 1 respectively. For example, one end of the folding ring 312 can be glued to the diaphragm 311. And / or, the other end of the folding ring 312 can also be glued to the frame 1.

[0051] Of course, the configuration of the folded ring 312 is not fixed in this application, and those skilled in the art can make adjustments as needed. For example, the folded ring 312 can also be in the form of an inverted U-shape, but the vibration system 3 containing the folded ring 312 has a larger thickness compared to the vibration system 3 containing the U-shaped folded ring 312.

[0052] Next, due to the material properties of the diaphragm 311, its rigidity is not infinite. Therefore, when the vibration frequency reaches a certain level, especially at high frequencies, the diaphragm 311, driven by the voice coil assembly 32, will not exhibit a uniform vibration state, but will instead oscillate, causing the diaphragm 311 to exhibit segmented motion, affecting the sound output and sound quality of the amplifier. The oscillation phenomenon of the diaphragm 311 is as follows... Figure 11 As shown in figures a and 11b, some regions of the vibration wave move upwards, while others oscillate downwards. Furthermore, these two figures also show that if the diameter of the voice coil assembly 32 is too large or too small, the diaphragm 311 will exhibit oscillation. Therefore, by placing the spider assembly 33 inside the voice coil assembly 32, the diameter of the voice coil assembly 32 is not constrained by the spider assembly 33, allowing for flexible adjustment of the voice coil assembly 32's size. This enables the voice coil assembly 32 to connect with the optimal stress point of the diaphragm 311, such as... Figure 11 As shown in c, this effectively suppresses the segmentation motion of the diaphragm 311, making the high-frequency curve smoother, extending the bandwidth of the generator, and improving the overall performance of the generator.

[0053] See Figure 4 , 5 7, 9. The spider assembly 33 includes a spider 331 and a support frame 332, both located inside the voice coil assembly 32. The support frame 332 has a ring-shaped structure. Because it is located inside the voice coil assembly 32, compared to when both the spider 331 and the support frame 332 are located outside the voice coil assembly 32, the weight of the support frame 332 can be reduced, thereby reducing the weight of the vibration system 3 and improving the sensitivity of the generator. Furthermore, since the spider 331 is located inside the voice coil assembly 32, it does not occupy vibration space, which is beneficial for the thinning of the generator. One end of the spider 331 is connected to the inner wall of the second magnetic conductor 23, and the other end is connected to the diaphragm 311 through the support frame 332. In this way, the spider 331 can support the diaphragm 311 without affecting its amplitude. Furthermore, because the annular structure of the second magnetically conductive element 23 increases the installation space for the spring assembly 33, the spring 331 can be flexibly installed at any position within the space enclosed by the second magnetically conductive part 33, such as... Figure 5 Positions A, B, and C are shown. Furthermore, in this application, the spring 331 is located at the center of the generator and is connected to the diaphragm 311 via a support frame 332, ensuring the voice coil assembly 32 moves vertically. This prevents the diaphragm 311 from swaying due to unbalanced forces caused by the voice coil assembly 32's tilt, thus avoiding any impact on the generator's sound quality.

[0054] It should be noted that this application does not limit the shape and material of the spring 331, as long as the spring 331 has a relatively large compliant dynamic range and allows the sound generator to be tuned to a resonant frequency. For example, the spring 331 can be made of metal, plastic, rubber, fabric, or fiber. And / or, the cross-section of the spring 331 can be a polygonal, arc-shaped, or straight line. And / or, the spring 331 may or may not have through holes 3311. When the cross-sectional shape of the spring 331 is straight, the structure of the spring 331 can be as follows: Figure 9 and 10 As shown. When the cross-sectional shape of the spinner 331 is curved, the structure of the spinner 331 can be as follows. Figure 4-8 As shown. Furthermore, when a through hole 3311 is formed on the spring wave 331, the structure of the spring wave 331 is as follows: Figure 4-6 As shown in Figures 9-10. When the through hole 3311 is not formed on the spinner 331, the structure of the spinner 331 is as follows: Figure 7-8 As shown.

[0055] It should also be noted that this application does not limit the connection method of the spring wave 331 to the second magnetic conductive element 23 and the support frame 332 respectively, as long as the spring wave 331 can be connected to the second magnetic conductive element 23 and the support frame 332 respectively. For example, one end of the spring wave 331 can be glued to the inner wall of the second magnetic conductive element 23. And / or, the other end of the spring wave 331 can also be glued to the support frame 332.

[0056] The sound generator of this application will be described in conjunction with the following embodiments:

[0057] like Figure 4 As shown, the power of the sound generator is 10W, the thickness is 9.7mm, the height of the magnetic circuit system 2 is 5.8mm, the outer diameter of the diaphragm 311 is 68mm, the voice coil assembly 32 has a core size of 25.4mm, the outer diameter of the spider 331 is 21mm, and the outer diameter of the support frame 332 is 10.4mm. Here, height refers to... Figure 4 The dimensions shown are in the vertical direction.

[0058] The frequency response of the transmitter was tested at a distance of 1m and a power of 1W. The results are shown below. Figure 12 .

[0059] from Figure 12 It can be seen that the frequency response curve of the generator in this application exhibits a smooth and stable trend after the frequency exceeds 200Hz, while also possessing a large bandwidth. This indicates that the generator in this application can maintain stable output in the high-frequency range, with smooth sound intensity changes and no significant fluctuations, thereby improving the sound quality of the generator. Furthermore, from... Figure 12It can also be seen that the sensitivity of the generator in this application is as high as 80dB / W. Therefore, the generator in this application possesses high electroacoustic conversion efficiency and sensitivity, which will help it to be widely used in various electronic devices, bringing users an excellent sound experience.

[0060] Furthermore, this utility model proposes an electronic device that includes the sound generator described in any of the above embodiments. It is understood that the sound generator is applied to an electronic device, which can be headphones, a mobile phone, a computer, etc., and is not limited thereto.

[0061] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, any of the claimed embodiments in the claims of this application can be used in any combination.

[0062] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A sound generator, characterized in that, The sound generator includes: Basin stand (1); A magnetic circuit system (2) is housed within the basket (1) and has a magnetic gap (25); The vibration system (3) includes a diaphragm assembly (31) disposed on the frame (1) and a voice coil assembly (32) and a spider assembly (33) housed in the frame (1). One end of the voice coil assembly (32) is suspended in the magnetic gap (25), and the other end is connected to the diaphragm assembly (31). The spider assembly (33) includes a spider (331) located inside the voice coil assembly (32) and a support frame (332). One end of the spider (331) is connected to the magnetic circuit system (2), and the other end is connected to the diaphragm (311) through the support frame (332).

2. The sound generator according to claim 1, characterized in that, The magnetic circuit system (2) includes a first magnetic circuit portion and a second magnetic circuit portion, with the magnetic gap (25) formed between the first magnetic circuit portion and the second magnetic circuit portion. The first magnetic circuit portion is located outside the voice coil assembly (32), and the second magnetic circuit portion is located inside the voice coil assembly (32) and connected to the spider (331).

3. The sound generator according to claim 2, characterized in that, The first magnetic circuit portion includes a magnet (21) stacked together and a first magnetic conductive element (22), and the second magnetic circuit portion includes a second magnetic conductive element (23); The magnet (21) and the first magnetic conductor (22) are arranged around the second magnetic conductor (23) and are spaced apart from the second magnetic conductor (23) to form the magnetic gap (25); The second magnetic conductor (23) is arranged around the spring (331), and its inner wall is connected to the spring (331).

4. The sound generator according to claim 3, characterized in that, The second magnetic circuit portion further includes a third magnetic conductor (24), which is disposed around the second magnetic conductor (23) and extends along the second magnetic conductor (23) in a direction away from the spring wave (331); the magnet (21) is disposed on the third magnetic conductor (24).

5. The sound generator according to claim 1, characterized in that, The cross-section of the elastic wave (331) is in the form of a broken line, an arc, or a straight line.

6. The sound generator according to claim 1, characterized in that, The spring wave (331) is provided with at least one through hole (3311).

7. The sound generator according to claim 1, characterized in that, The material of the elastic wave (331) is metal, plastic, rubber, fabric or fiber.

8. The sound generator according to claim 1, characterized in that, The frame (1) has a mounting hole (11) at one end away from the diaphragm (311), and the magnetic circuit system (2) is disposed in the mounting hole (11).

9. The sound generator according to claim 1, characterized in that, The diaphragm (311) includes a diaphragm (311) and a folded ring (312) arranged around the diaphragm (311), the diaphragm (311) being arranged on the frame (1) via the folded ring (312).

10. An electronic device, characterized in that, The electronic device includes the sound generator according to any one of claims 1-9.

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