Thin-body loudspeaker structure

Abstract

The utility model discloses a thin-body loudspeaker structure, which comprises a basin frame, a loudspeaker and a loudspeaker, a magnet; a voice coil; a first diaphragm; a damper; a U iron; a fixing piece is arranged on the basin frame; the lower end of the basin stand is covered with a second diaphragm used for generating vibration to enhance bass. The upper end of the damper is connected to the first diaphragm so as to limit the first diaphragm. According to the utility model, the supporting part of the damper is directly connected with the first diaphragm, so that the stability of the first diaphragm is effectively enhanced, and the overall thickness is greatly reduced, so that the damper can be applied to various light and thin electronic equipment. In addition, an existing double-damper structure is omitted, the first diaphragm and the second diaphragm cover the upper face and the lower face of the basin frame respectively, in the process that the voice coil serves as a piston in the axial direction, air pressure in the loudspeaker changes and drives the second diaphragm to vibrate, the overall bass effect can be effectively improved, and in other words, when the bass effect is guaranteed, the loudspeaker can be used in a loudspeaker. And lightening and thinning are also realized.

Description

Technical fields:

[0001] This utility model relates to the field of loudspeaker technology, and specifically to a thin loudspeaker structure. Background technology:

[0002] A loudspeaker is a transducer that converts electrical signals into sound signals. When different electronic energies are transmitted to the coil, the coil generates an energy that interacts with the magnetic field of the magnet. This interaction causes the diaphragm to vibrate. Because the electronic energy changes constantly, the speaker's coil will move forward or backward, and thus the speaker's diaphragm will move accordingly. These actions change the density of the air, thus producing sound.

[0003] There are many types of speakers, and they are used in a variety of devices. In today's digital age, electronic devices such as mobile phones, laptops, smartwatches, and external displays are trending towards being lighter and thinner, which places increasingly higher demands on the thinness and lightness of their built-in speakers.

[0004] Most loudspeakers on the market today connect the spider directly to the voice coil in their structure. For example, Chinese utility model patent application CN219164730U discloses a fatigue-resistant woofer, which includes a voice coil assembly, a voice coil positioning assembly, and a magnetic circuit assembly. The voice coil assembly includes a voice coil, a first spider, a second spider, and a silicone ring. The first and second spiders are sequentially mounted on the voice coil from top to bottom. The inner ring of the first spider contacts the outer wall of the voice coil, and the outer ring of the first spider contacts the frame. The inner ring of the second spider contacts the outer wall of the voice coil, and the outer ring of the second spider contacts the frame. The silicone ring is installed between the first and second spiders. The top of the silicone ring contacts the lower surface of the first spider, and the bottom of the silicone ring contacts the upper surface of the second spider.

[0005] However, this existing fatigue-resistant woofer still has the following shortcomings:

[0006] In this technical solution, a double-spike structure of a first and a second bounce is used to improve axial performance, and a silicone ring is placed between the first and second bounces to buffer the impact and improve service life. However, in order to avoid the bounce colliding with the T-iron, the distance between the bounce and the T-iron is generally increased in the design, which undoubtedly increases the overall thickness of the speaker, making it unsuitable for use in various thin and light electronic devices. Furthermore, the double-spike structure requires the addition of a silicone ring, which further limits the development of speakers towards thinner designs.

[0007] In addition, there are relatively thin speakers on the market, such as the ultra-thin internal magnetic structure speaker disclosed in Chinese utility model patent application CN219164730U. This structure is thinner and lighter than the aforementioned double spider structure, but due to the influence of the structure, its bass performance is not good.

[0008] In view of the above, the inventors propose the following technical solution. Utility Model Content:

[0009] The purpose of this invention is to overcome the shortcomings of the prior art and provide a thin speaker structure.

[0010] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a thin-body loudspeaker structure, comprising: a frame; a magnet disposed within the frame; a voice coil sleeved on the magnet and driven by the magnet to vibrate; a first diaphragm covering the frame and driven by the voice coil to generate vibration; a spider disposed in the frame and used to limit the position of the voice coil; a U-shaped iron disposed on the frame and used to enhance the magnetic field and support the voice coil; a washer for reducing magnetic resistance to facilitate magnetic conduction is also disposed on the frame; a second diaphragm for generating vibration to enhance bass is also disposed at the lower end of the frame; the spider includes: a support portion surrounding the voice coil and connected to the first diaphragm, and a wave portion disposed at the lower end of the support portion; when an audio current passes through the voice coil, a magnetic field is generated between the voice coil and the magnet, causing the voice coil to vibrate axially and drive the first and second diaphragms to vibrate.

[0011] Furthermore, in the above technical solution, the waveform portion is formed with at least one bouncy wave pattern for reducing the vibration amplitude, the support portion has a support hole, and the upper end of the voice coil extends into the support hole to axially limit the voice coil.

[0012] Furthermore, in the above technical solution, the longitudinal cross-sectional shape of the support part is T-shaped or I-shaped.

[0013] Furthermore, in the above technical solution, the support part is in the shape of a trumpet that gradually narrows from bottom to top, and the lower end of the support part is integrally formed with the wave part; the material of the wave includes at least one of cotton cloth, silk and chemical fiber.

[0014] Furthermore, in the above technical solution, the U-shaped iron has an axial clearance groove, the magnet is disposed in the clearance groove and forms a first gap with the inner wall of the U-shaped iron, and the lower end of the voice coil extends into the first gap; the frame is provided with a fixing member for preventing the spring from contacting the U-shaped iron, and the upper edge of the fixing member extends to form a blocking part for axially limiting the U-shaped iron.

[0015] Furthermore, in the above technical solution, the first diaphragm includes: a first vibrating part connected to the elastic wave and capable of generating vibration, and a first diaphragm corrugation integrally formed with the first vibrating part and in a corrugated shape, wherein the outer edge of the first diaphragm corrugation is disposed on the basin frame.

[0016] Furthermore, in the above technical solution, the basin stand includes a basin body and a support disposed in the basin body. The support is formed with a bob placement groove for accommodating the bob. The support is provided with a first stepped groove for limiting the bob. The outer edge of the bob is matched and placed in the first stepped groove to avoid the bob from accidentally sliding.

[0017] Furthermore, in the above technical solution, the bracket and the basin are integrally formed, and a clearance space is formed at the connection between the bracket and the basin to allow internal air circulation; the bracket is also provided with a second stepped groove for positioning the second diaphragm, and the second diaphragm is annular and covers the space between the second stepped groove and the basin.

[0018] Furthermore, in the above technical solution, the second diaphragm is formed with a second diaphragm corrugation and a third diaphragm corrugation in a corrugated shape, and a second vibrating part for vibrating to enhance the bass is formed between the second diaphragm corrugation and the third diaphragm corrugation.

[0019] Furthermore, in the above technical solution, the basin rack is provided with a washer receiving groove for accommodating the washer.

[0020] After adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art: In this utility model, by directly connecting the support part of the spider to the first diaphragm, the spider supports the first diaphragm, effectively enhancing the stability of the first diaphragm. This makes the voice coil more precise and stable when it moves like a piston along the axial direction, and greatly reduces the overall thickness, making this utility model applicable to various thin and light electronic devices. In addition, compared with the existing structure, this utility model eliminates the existing double spider structure. Instead, it uses the first diaphragm and the second diaphragm to cover the upper and lower surfaces of the speaker frame, respectively. When the voice coil moves like a piston along the axial direction, the vibration of the first diaphragm causes a change in the air pressure inside the speaker, which in turn drives the second diaphragm to vibrate. This effectively improves the overall bass effect, thus achieving both bass performance and thinness. Attached image description:

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0023] Figure 3 yes Figure 2 Enlarged view at point A;

[0024] Figure 4 This is an exploded structural diagram of the present invention;

[0025] Figure 5 This is an exploded structural diagram of the present invention from another perspective;

[0026] Figure 6 This is a three-dimensional schematic diagram of the basin frame in this utility model;

[0027] Figure 7 This is a schematic diagram of the structure of the elastic wave in this utility model;

[0028] Figure 8 This is a cross-sectional schematic diagram of Embodiment 2 of this utility model. Detailed implementation method:

[0029] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0030] Combination Figures 1 to 7 The diagram shows a thin-body speaker structure. In one embodiment of this invention, it includes: a frame 1; a magnet 2 disposed within the frame 1; a voice coil 3 fitted onto the magnet 2 and driven by the magnet 2 to vibrate; a first diaphragm 4 covering the frame 1 and driven by the voice coil 3 to generate vibration; a spider 5 disposed within the frame 1 and used to limit the position of the voice coil 3; and a U-shaped iron 6 disposed on the frame 1 and used to enhance the magnetic field and support the voice coil 3. The frame 1 is also provided with a washer 15 for reducing magnetic resistance to conduct magnetically; the lower end of the frame 1 is also covered with a second diaphragm 12 for generating vibration to enhance bass; the spring 5 includes a support portion 51 surrounding the voice coil 3 and connected to the first diaphragm 4 and a wave portion 52 provided at the lower end of the support portion 51; when an audio current passes through the voice coil 3, a magnetic field is generated between the voice coil 3 and the magnet 2, causing the voice coil 3 to vibrate axially and drive the first diaphragm 4 and the second diaphragm 12 to vibrate.

[0031] In this invention, by directly connecting the support part 51 of the spider 5 to the first diaphragm 4, the spider 5 supports the first diaphragm 4, effectively enhancing the stability of the first diaphragm 4. This makes the voice coil 3 more precise and stable when it moves along the axial direction like a piston, and greatly reduces the overall thickness, making this invention applicable to various thin and light electronic devices. Furthermore, compared to existing structures, this invention eliminates the existing double spider structure. Instead, it uses the first diaphragm 4 and the second diaphragm 12 respectively covering the upper and lower surfaces of the frame 1. During the piston movement of the voice coil 3 along the axial direction, the vibration of the first diaphragm 4 causes a change in the air pressure inside the speaker, which in turn drives the second diaphragm 12 to vibrate, effectively improving the overall bass effect. Thus, while ensuring bass performance, it also achieves a thinner and lighter design.

[0032] The longitudinal section of the support portion 51 is T-shaped or I-shaped. Here, the longitudinal section is the section obtained by cutting along the radial direction of the support portion 51. The T-shaped or I-shaped design allows for a larger contact area and greater friction between the support portion 51 and the first diaphragm 4, thereby achieving a better support effect.

[0033] The material of the spring wave 5 includes at least one of cotton, silk, and synthetic fiber. The wave portion 52 has at least one spring wave 521 formed to reduce the vibration amplitude. A support hole 511 is provided on the support portion 51, and the upper end of the voice coil 3 extends into the support hole 511 to axially limit the voice coil 3. It is understood that the length of the voice coil 3 needs to be greater than the distance between the highest point of the fixing member 11 and the support hole 511 to ensure that the voice coil 3 will not accidentally dislodge from the spring wave 5 during high-frequency vibration, thereby improving the stability of the voice coil 3's axial vibration.

[0034] The U-shaped iron 6 has an axially oriented clearance groove 61. The magnet 2 is disposed within the clearance groove 61, forming a first gap 20 between it and the inner wall of the U-shaped iron 6. The lower end of the voice coil 3 extends into the first gap 20. The frame 1 is provided with a fixing member 11 to prevent contact between the spring 5 and the U-shaped iron 6. The upper edge of the fixing member 11 extends to form a blocking part 111 for axially limiting the U-shaped iron 6. Here, the magnet 2 is disposed within the clearance groove 61 of the U-shaped iron 6, and the lower end of the voice coil 3 is fitted into the gap between the magnet 2 and the U-shaped iron 6. The three form a magnetic circuit, creating a closed magnetic field environment, thereby enabling the voice coil 3 to vibrate stably in the magnetic field. Furthermore, the fixing member 11 covers the periphery of the U-shaped iron 6, effectively preventing accidental collisions between the spring 5 and the U-shaped iron 6.

[0035] The first diaphragm 4 includes: a first vibrating part 41 connected to the elastic wave 5 and capable of generating vibration, and a first diaphragm corrugation 42 integrally formed with the first vibrating part 41 and in a corrugated shape, wherein the outer edge of the first diaphragm corrugation 42 is disposed on the basin frame 1. Here, the outer edge of the diaphragm corrugation 42 is placed on the frame 1 to form a seal. When the first vibrating part 41 of the first diaphragm 4 vibrates under the drive of the voice coil 3, since the first diaphragm 4 is integrally formed, the vibration force on the first vibrating part 41 will continue to be transmitted to the first diaphragm corrugation 42, causing the first diaphragm corrugation 42 to also vibrate, and compressing the air inside the speaker to change the air pressure, thereby driving the second diaphragm 12 to vibrate, which can effectively enrich the bass effect. Among them, the first diaphragm corrugation 42 is concave corrugated, which can effectively increase the contact area with the internal air, improve the efficiency of changing the air pressure, and improve the effect of vibration transmission between the first diaphragm 4 and the second diaphragm 12. In addition, the first diaphragm corrugation 42 can also affect the elasticity and damping of the first diaphragm 4, thereby restricting the vibration amplitude of the diaphragm and improving the sound quality.

[0036] The basin stand 1 includes a basin body 101 and a support 102 disposed within the basin body 101. The support 102 has a spring placement groove 1021 formed on it for accommodating the spring 5. The support 102 has a first stepped groove 1022 for limiting the spring 5. The outer edge of the spring 5 is matched and placed in the first stepped groove 1022 to prevent the spring 5 from accidentally sliding.

[0037] The second diaphragm 12 has corrugated second diaphragm corrugations 122 and 123, with a second vibrating section 121 formed between the second diaphragm corrugations 122 and 123 for vibrating to enhance bass. Here, the second diaphragm corrugations 122 and 123 can affect the elasticity and damping of the second diaphragm 12, thereby limiting the diaphragm's vibration amplitude and improving sound quality.

[0038] The support 102 and the basin 101 are integrally formed, and a clearance 103 for internal air circulation is formed at the connection between the support 102 and the basin 101. The support 102 also has a second stepped groove 1023 for positioning the second diaphragm 12. This second stepped groove 1023 is flush with the lower edge of the basin 101. The second diaphragm 12 is annular and covers the space between the second stepped groove 1023 and the basin 101. Here, the clearance 103 is located between the first diaphragm corrugation 42 and the second vibrating part 121 to facilitate the transmission of vibration between the internal first diaphragm 4 and the second diaphragm 12.

[0039] The frame 1 is provided with a washer receiving groove 151 for accommodating the washer 15. Here, the washer 15 is also referred to as a magnetic guide plate. In this embodiment, the washer 15 is annular and surrounds the U-shaped iron 6 so that the magnetic field generated by the magnet 2 can be concentrated in the space of the axial vibration of the voice coil 3, thereby reducing magnetic resistance, reducing distortion, and improving the efficiency and sound quality of the speaker.

[0040] In the second embodiment of this utility model, combined with Figure 8 As shown, the support portion 51 is flared in shape, gradually narrowing from bottom to top, and the lower end of the support portion 51 is integrally formed with the wave portion 52. Designing the support portion 51 of the wave 5 in a flared shape makes the connection between the wave 5 and the first diaphragm 4 more stable, and the overall thickness is very thin. Compared with Embodiment 1 of this utility model, only the shape of the support portion 51 and the forming method of the wave 5 are different; all other structures are the same.

[0041] In summary, by directly connecting the support part 51 of the spider 5 to the first diaphragm 4, the spider 5 supports the first diaphragm 4, effectively enhancing the stability of the first diaphragm 4. This makes the voice coil 3 more precise and stable during axial piston movement, and significantly reduces the overall thickness, allowing this invention to be applied to various thin and light electronic devices. Furthermore, compared to existing structures, this invention eliminates the need for the existing double spider structure. Instead, it uses the first diaphragm 4 and the second diaphragm 12 respectively covering the upper and lower surfaces of the frame 1. During the axial piston movement of the voice coil 3, the vibration of the first diaphragm 4 causes a change in the air pressure inside the speaker, which in turn drives the second diaphragm 12 to vibrate, effectively improving the overall bass effect. Thus, while maintaining bass performance, it also achieves a thinner and lighter design.

[0042] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A thin-body loudspeaker structure, comprising: Basin stand (1); A magnet (2) is disposed inside the basin frame (1); A voice coil (3) is fitted onto the magnet (2) and driven by the magnet (2) to vibrate; The first diaphragm (4) is placed on the frame (1) and driven by the voice coil (3) to generate vibration; A spring (5) is disposed in the frame (1) and used to limit the position of the voice coil (3); U-shaped iron (6) is disposed on the frame (1) and is used to enhance the magnetic field and support the voice coil (3); the frame (1) is also provided with a washer (15) for reducing magnetic resistance to conduct magnetically. The feature is that the lower end of the frame (1) is further covered with a second diaphragm (12) for generating vibration to enhance the bass; the spring (5) includes: a support portion (51) surrounding the voice coil (3) and connected to the first diaphragm (4) and a wave portion (52) disposed at the lower end of the support portion (51); When an audio current passes through the voice coil (3), a magnetic field is generated between the voice coil (3) and the magnet (2), causing the voice coil (3) to vibrate axially and drive the first diaphragm (4) and the second diaphragm (12) to vibrate.

2. The thin-body loudspeaker structure according to claim 1, characterized in that: The waveform portion (52) is formed with at least one bouncy wave (521) for reducing the vibration amplitude. The support portion (51) has a support hole (511). The upper end of the voice coil (3) extends into the support hole (511) to axially limit the voice coil (3).

3. The thin-body loudspeaker structure according to claim 2, characterized in that: The longitudinal cross-sectional shape of the support part (51) is T-shaped or I-shaped.

4. A thin-body loudspeaker structure according to claim 2, characterized in that: The support part (51) is in the shape of a trumpet that gradually narrows from bottom to top, and the lower end of the support part (51) and the wave part (52) are integrally formed; the material of the wave (5) includes at least one of cotton cloth, silk and chemical fiber.

5. A thin-body loudspeaker structure according to claim 1, characterized in that: The U-shaped iron (6) has an axial clearance groove (61), the magnet (2) is disposed in the clearance groove (61) and forms a first gap (20) between it and the inner wall of the U-shaped iron (6), and the lower end of the voice coil (3) extends into the first gap (20); the frame (1) is provided with a fixing member (11) for preventing the spring (5) from contacting the U-shaped iron (6), and the upper edge of the fixing member (11) extends to form a blocking part (111) for axially limiting the U-shaped iron (6).

6. A thin-body loudspeaker structure according to claim 1, characterized in that: The first diaphragm (4) includes: a first vibrating part (41) connected to the elastic wave (5) and capable of generating vibration, and a first diaphragm corrugation (42) integrally formed with the first vibrating part (41) and in a corrugated shape, wherein the outer edge of the first diaphragm corrugation (42) is disposed on the basin frame (1).

7. A thin-body loudspeaker structure according to claim 1, characterized in that: The basin stand (1) includes a basin (101) and a support (102) disposed in the basin (101). The support (102) has a spring placement groove (1021) for accommodating the spring (5). The support (102) has a first stepped groove (1022) for limiting the spring (5). The outer edge of the spring (5) is matched and placed in the first stepped groove (1022) to avoid the spring (5) from sliding accidentally.

8. A thin-body loudspeaker structure according to claim 7, characterized in that: The bracket (102) and the basin (101) are integrally formed, and an air-proof space (103) is formed at the connection between the bracket (102) and the basin (101) to allow internal air circulation; the bracket (102) is also provided with a second stepped groove (1023) for positioning the second diaphragm (12), and the second diaphragm (12) is annular and covers the second stepped groove (1023) and the basin (101).

9. A thin-body loudspeaker structure according to claim 1, characterized in that: The second diaphragm (12) is formed with a second diaphragm corrugation (122) and a third diaphragm corrugation (123) in a corrugated shape, and a second vibrating part (121) for vibrating to enhance the bass is formed between the second diaphragm corrugation (122) and the third diaphragm corrugation (123).

10. A thin-body loudspeaker structure according to any one of claims 1-9, characterized in that: The basin stand (1) is provided with a washer receiving slot (151) for accommodating the washer (15).

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