Thin-body loudspeaker

Abstract

The invention discloses a thin-body loudspeaker. The thin-body loudspeaker comprises a frame; a magnet; a voice coil; a first diaphragm; a damper; a U iron; the basin stand is provided with a fixing member used for preventing contact between the damper and the U iron. 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. The damper is directly connected with the first diaphragm, so that the damper supports the first diaphragm, the stability of the first diaphragm is effectively enhanced, the overall thickness is greatly reduced, the damper and the U iron are separated through the fixing piece, accidental collision between the damper and the U iron is effectively avoided, and when the voice coil performs piston motion in the axial direction, the damper and the U iron are separated from each other through the fixing piece. The method is more accurate and stable. In addition, an existing double-damper structure is omitted, the first diaphragm and the second diaphragm are arranged on the upper face and the lower face of the basin frame in a covering mode respectively, the overall bass effect can be effectively improved, the bass effect is guaranteed, and meanwhile light and thin effects are achieved.

Description

Technical field:

[0001] The present invention relates to the technical field of loudspeakers, and in particular to a thin loudspeaker. Background technology:

[0002] A speaker is a transducer device 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 paper plate to vibrate. Because the electronic energy changes at any time, the coil of the speaker will move forward or backward, so the paper plate of the speaker will move with it. This action causes the density of the air to change and produce sound.

[0003] There are many types of speakers, which are also used in various devices. In today's digital age, electronic devices such as mobile phones, laptops, smart watches, and external monitors are developing towards lighter and thinner devices, and the requirements for built-in speakers to be lighter and thinner are also getting higher and higher.

[0004] Most of the loudspeakers currently on the market are structured to connect the spring directly to the voice coil. For example, Chinese utility model patent application with patent announcement number CN219164730U discloses an anti-fatigue 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 spring, a second spring, and a silicone ring. The first spring and the second spring are sequentially mounted on the voice coil from top to bottom. The inner ring of the first spring contacts the outer wall of the voice coil, the outer ring of the first spring contacts the basin frame, the inner ring of the second spring contacts the outer wall of the voice coil, the outer ring of the second spring contacts the basin frame, and the silicone ring is installed between the first spring and the second spring. The top of the silicone ring contacts the lower surface of the first spring, and the bottom of the silicone ring contacts the upper surface of the second spring.

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

[0006] In this technical solution, a double elastic wave structure of a first elastic wave and a second elastic wave is used to improve the axial performance, and a silicone ring is provided between the first elastic wave and the second elastic wave to improve the service life. However, in order to avoid collision between the elastic wave and the T-iron, the distance between the elastic wave and the T-iron is generally increased during design, which undoubtedly increases the overall thickness of the speaker, making it impossible to apply to various thin and light electronic devices. In addition, the double elastic wave structure requires the addition of a silicone ring, which further limits the development of the speaker in a thinner direction.

[0007] In addition, there are relatively thin speakers on the market, such as an ultra-thin internal magnetic structure speaker disclosed in the Chinese utility model patent application with patent announcement number CN219164730U. This structure is thinner and lighter than the above-mentioned double elastic wave structure, but its bass effect is not good due to the structure.

[0008] In view of this, the inventor proposes the following technical solution. Summary of the invention:

[0009] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a thin speaker.

[0010] In order to solve the above technical problems, the present invention adopts the following technical solutions: a thin-body loudspeaker, comprising: a basin frame; a magnet, which is arranged in the basin frame; a voice coil, which is sleeved on the magnet and driven by the magnet to vibrate; a first diaphragm, which is covered on the basin frame and driven by the voice coil to generate vibration; a spring, which is arranged in the basin frame and is used to limit the voice coil; a U iron, which is arranged on the basin frame and is used to enhance the magnetic field and support the voice coil; it is characterized in that a fixing part for preventing contact between the spring and the U iron is provided on the basin frame; the lower end of the basin frame is also covered with a second diaphragm for generating vibration to enhance the bass; the upper end of the spring is connected to the first diaphragm to limit the first diaphragm; when an audio current passes through the voice coil, a magnetic field is generated between the voice coil and the magnet, so that the voice coil vibrates along the axial direction and drives the first diaphragm and the second diaphragm to vibrate.

[0011] Furthermore, in the above technical solution, the elastic wave includes: a supporting portion surrounding the periphery of the voice coil and connected to the first diaphragm, and a corrugated portion arranged at the lower end of the supporting portion, the corrugated portion is formed with at least one elastic wave ripple for reducing the vibration amplitude, and a supporting hole is provided on the supporting portion, and the upper end of the voice coil extends into the supporting hole to axially limit the voice coil.

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

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

[0014] Furthermore, in the above technical solution, the U-iron is provided with an avoidance groove along the axial direction, the magnet is arranged in the avoidance groove and forms a first gap with the inner wall of the U-iron, and the lower end of the voice coil extends into the first gap; the U-iron is arranged in the fixing part, and the upper edge of the fixing part is extended to form a blocking part for axially limiting the U-iron.

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

[0016] Furthermore, in the above technical solution, the basin frame includes a basin body and a bracket arranged in the basin body, the bracket is formed with a spring placement groove for accommodating the spring, and the bracket is provided with a first step groove for limiting the spring, and the outer edge of the spring is matched and placed in the first step groove to prevent the spring from accidentally sliding.

[0017] Furthermore, in the above technical solution, the bracket and the basin body are integrally formed, and a space for internal air circulation is formed at the connection between the bracket and the basin body; a second step groove for positioning the second diaphragm is also provided on the bracket, and the second diaphragm is in a circular shape and is covered between the second step groove and the basin body.

[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 vibration 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, a washer accommodating groove is provided on the basin frame, and correspondingly, a washer for reducing magnetic resistance for magnetic conduction is also provided on the basin frame.

[0020] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art: In the present invention, by directly connecting the elastic wave with the first diaphragm, the elastic wave plays a supporting role on the first diaphragm, effectively enhancing the stability of the first diaphragm and greatly reducing the overall thickness. At the same time, the elastic wave is separated from the U iron by the fixing member, effectively avoiding the accidental collision between the elastic wave and the U iron, so that the voice coil is more accurate and stable when performing piston movement along the axial direction, so that the present invention can be applied to various types of light and thin electronic devices. In addition, compared with the existing structure, the present invention omits the existing double elastic wave structure, and instead adopts the method of covering the first diaphragm and the second diaphragm on the upper and lower surfaces of the basin frame respectively. When an audio current passes through the voice coil, the voice coil is made to perform piston movement along the axial direction. When the first diaphragm vibrates, the air pressure inside the speaker will change and drive the second diaphragm to vibrate, which can effectively improve the overall bass effect, that is, while ensuring the bass effect, it also achieves lightness and thinness. Description of the drawings:

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

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

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

[0024] Figure 4 It is a schematic diagram of the decomposed structure of the present invention;

[0025] Figure 5 It is a schematic diagram of the decomposed structure of the present invention from another perspective;

[0026] Figure 6 It is a three-dimensional schematic diagram of the basin stand in the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the bullet wave in the present invention;

[0028] Figure 8 It is a cross-sectional schematic diagram of the second embodiment of the present invention. Specific implementation method:

[0029] The present invention is further described below in conjunction with specific embodiments and drawings.

[0030] Combination Figures 1 to 7As shown, a thin-body speaker, in the first embodiment of the present invention, comprises: a basin frame 1; a magnet 2, which is arranged in the basin frame 1; a voice coil 3, which is sleeved on the magnet 2 and driven by the magnet 2 to vibrate; a first diaphragm 4, which is covered on the basin frame 1 and driven by the voice coil 3 to generate vibration; a spring 5, which is arranged in the basin frame 1 and is used to limit the voice coil 3; a U iron 6, which is arranged on the basin frame 1 and is used to enhance the magnetic field and support the voice coil 3; a fixing member 11 is provided on the basin frame 1 for preventing contact between the spring 5 and the U iron 6; the lower end of the basin frame 1 is also covered with a second diaphragm 12 for generating vibration to enhance the bass; the upper end of the spring 5 is connected to the first diaphragm 4 to limit the first diaphragm 4; when an audio current passes through the voice coil 3, a magnetic field is generated between the voice coil 3 and the magnet 2, so that the voice coil 3 vibrates along the axial direction and drives the first diaphragm 4 and the second diaphragm 12 to vibrate.

[0031] In the present invention, by directly connecting the elastic wave 5 with the first diaphragm 4, the elastic wave 5 plays a supporting role for the first diaphragm 4, effectively enhancing the stability of the first diaphragm 4 and greatly reducing the overall thickness. At the same time, the elastic wave 5 is separated from the U iron 6 by the fixing member 11, effectively avoiding the accidental collision between the elastic wave 5 and the U iron 6, so that the voice coil 3 is more accurate and stable when performing piston movement along the axial direction, so that the present invention can be applied to various types of light and thin electronic devices. In addition, compared with the existing structure, the present invention omits the existing double elastic wave structure, and instead adopts the method of covering the first diaphragm 4 and the second diaphragm 12 on the upper and lower surfaces of the basin frame 1 respectively. When an audio current passes through the voice coil 3, the voice coil 3 is made to perform piston movement along the axial direction. When the first diaphragm 4 vibrates, the air pressure inside the speaker will change and drive the second diaphragm 12 to vibrate, which can effectively improve the overall bass effect, that is, while ensuring the bass effect, it also achieves lightness and thinness.

[0032] The longitudinal section of the support portion 51 is T-shaped or I-shaped. Here, the longitudinal section is a section obtained by cutting along the radial direction of the support portion 51. The T-shaped or I-shaped shape can make the contact area between the support portion 51 and the first diaphragm 4 larger, and the friction force is also greater, so as to obtain a better support effect.

[0033] The material of the elastic wave 5 includes at least one of cotton cloth, silk and chemical fiber. The elastic wave 5 includes: a support portion 51 surrounding the periphery of the voice coil 3 and connected to the first diaphragm 4, and a corrugated portion 52 arranged at the lower end of the support portion 51, and at least one elastic wave corrugation 521 for reducing the vibration amplitude is formed on the corrugated portion 52, and 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. Here, it can be 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, so as to ensure that the voice coil 3 will not accidentally escape from the elastic wave 5 during high-frequency vibration, thereby improving the stability of the axial vibration of the voice coil 3.

[0034] The U iron 6 is provided with an avoidance groove 61 along the axial direction, the magnet 2 is arranged in the avoidance groove 61 and forms a first gap 20 with the inner wall of the U iron 6, and the lower end of the voice coil 3 extends into the first gap 20; the U iron 6 is arranged in the fixing part 11, and the upper edge of the fixing part 11 is extended to form a blocking part 111 for axially limiting the U iron 6. Here, the magnet 2 is arranged in the avoidance groove 61 of the U iron 6, and the lower end of the voice coil 3 is sleeved in the gap between the magnet 2 and the U iron 6. The three form a magnetic circuit to form a closed magnetic field environment, so that the voice coil 3 can stably vibrate in the magnetic field, and the fixing part 11 is covered on the periphery of the U iron 6, which can effectively avoid accidental collision between the elastic wave 5 and the U iron 6.

[0035] The first diaphragm 4 includes: a first vibration part 41 connected to the damper 5 and capable of generating vibration, and a first diaphragm corrugation 42 integrally formed with the first vibration part 41 and in a corrugated shape. The outer edge of the first diaphragm corrugation 42 is disposed on the basin frame 1 . Here, the outer edge cover of the diaphragm corrugation 42 is arranged on the basin frame 1 to form a seal. When the first vibration part 41 of the first diaphragm 4 is driven by the voice coil 3 to vibrate, since the first diaphragm 4 is integrally formed, the vibration force on the first vibration part 41 will continue to be transmitted to the first diaphragm corrugation 42 and make the first diaphragm corrugation 42 also vibrate, and squeeze 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; wherein, the first diaphragm corrugation 42 is a concave corrugation shape, which can effectively increase the contact area with the internal air, improve the efficiency of changing the air pressure, and improve the effect of transmitting vibration from the first diaphragm 4 to 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 quality of the sound.

[0036] The basin frame 1 includes a basin body 101 and a bracket 102 disposed in the basin body 101. The bracket 102 is formed with a wave-sprung placement groove 1021 for accommodating the wave-sprung 5. The bracket 102 is provided with a first step groove 1022 for limiting the wave-sprung 5. The outer edge of the wave-sprung 5 is matched and placed in the first step groove 1022 to prevent the wave-sprung 5 from accidentally sliding.

[0037] The second diaphragm 12 is formed with a corrugated second diaphragm corrugation 122 and a third diaphragm corrugation 123, and a second vibration part 121 for vibrating to enhance the bass is formed between the second diaphragm corrugation 122 and the third diaphragm corrugation 123. Here, the second diaphragm corrugation 122 and the third diaphragm corrugation 123 can affect the elasticity and damping of the second diaphragm 12, thereby restricting the vibration amplitude of the diaphragm and improving the quality of the sound.

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

[0039] The basin frame 1 is provided with a washer accommodating groove 151, and correspondingly, the basin frame 1 is also provided with a washer 15 for reducing magnetic resistance for magnetic conduction. Here, the washer 15 is also called a magnetic conductive plate. In this embodiment, the washer 15 is in a circular ring shape and surrounds the U 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 the present invention, combined with Figure 8 As shown, the support portion 51 is in the shape of a trumpet that gradually narrows from bottom to top, and the lower end of the support portion 51 is integrally formed with the corrugated portion 52. The support portion 51 of the damper 5 is designed to be trumpet-shaped, so that the connection between the damper 5 and the first diaphragm 4 is more stable, and the overall thickness is very thin. Compared with the first embodiment of the present invention, only the shape of the support portion 51 and the molding method of the damper 5 are different, and the rest of the structures are the same.

[0041] In summary, in the present invention, by directly connecting the elastic wave 5 with the first diaphragm 4, the elastic wave 5 plays a supporting role for the first diaphragm 4, effectively enhancing the stability of the first diaphragm 4 and greatly reducing the overall thickness. At the same time, the elastic wave 5 is separated from the U iron 6 by the fixing member 11, effectively avoiding the accidental collision between the elastic wave 5 and the U iron 6, so that the voice coil 3 is more accurate and stable when performing piston movement along the axial direction, so that the present invention can be applied to various types of light and thin electronic devices. In addition, compared with the existing structure, the present invention omits the existing double elastic wave structure, and instead adopts the method of covering the first diaphragm 4 and the second diaphragm 12 on the upper and lower surfaces of the basin frame 1 respectively. When an audio current passes through the voice coil 3, the voice coil 3 is made to perform piston movement along the axial direction. When the first diaphragm 4 vibrates, the air pressure inside the speaker will change and drive the second diaphragm 12 to vibrate, which can effectively improve the overall bass effect, that is, while ensuring the bass effect, it also achieves lightness and thinness.

[0042] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. All equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A thin speaker, comprising: Basin stand (1); A magnet (2), the magnet (2) being arranged in the basin frame (1); A voice coil (3) which is sleeved on the magnet (2) and driven by the magnet (2) to vibrate; A first diaphragm (4) is covered on the basin frame (1) and driven by the voice coil (3) to generate vibration; A spring (5) which is arranged in the basin frame (1) and is used to limit the position of the voice coil (3); A U iron (6) is arranged on the basin frame (1) and is used to enhance the magnetic field and support the voice coil (3); The invention is characterized in that a fixing part (11) is provided on the basin frame (1) for preventing the elastic wave (5) from contacting with the U iron (6); the lower end of the basin frame (1) is also covered with a second diaphragm (12) for generating vibration to enhance the bass; the upper end of the elastic wave (5) is connected to the first diaphragm (4) to limit the first diaphragm (4); When an audio current flows 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 along the axial direction and driving the first diaphragm (4) and the second diaphragm (12) to vibrate.

2. A thin speaker according to claim 1, characterized in that: The elastic wave (5) comprises: a support portion (51) surrounding the periphery of the voice coil (3) and connected to the first diaphragm (4), and a corrugated portion (52) arranged at the lower end of the support portion (51), the corrugated portion (52) being formed with at least one elastic wave ripple (521) for reducing the vibration amplitude, and a support hole (511) being 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).

3. A thin speaker according to claim 2, characterized in that: The longitudinal cross-section of the support portion (51) is T-shaped or I-shaped.

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

5. The thin speaker according to claim 1, characterized in that: The U-iron (6) is provided with an avoidance groove (61) along the axial direction; the magnet (2) is arranged in the avoidance groove (61) and forms a first gap (20) with the inner wall of the U-iron (6); the lower end of the voice coil (3) extends into the first gap (20); the U-iron (6) is arranged in the fixing member (11); and a blocking portion (111) is extended from the upper edge of the fixing member (11) to limit the axial position of the U-iron (6).

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

7. The thin speaker according to claim 1, characterized in that: The basin frame (1) comprises a basin body (101) and a bracket (102) arranged in the basin body (101); a damper placement groove (1021) for accommodating the damper (5) is formed on the bracket (102); a first stepped groove (1022) for limiting the damper (5) is opened on the bracket (102); the outer edge of the damper (5) is matched and placed in the first stepped groove (1022) to prevent the damper (5) from accidentally sliding.

8. The thin speaker according to claim 7, characterized in that: The bracket (102) and the basin body (101) are integrally formed, and a clearance position (103) for internal air circulation is formed at the connection between the bracket (102) and the basin body (101); a second stepped groove (1023) for positioning the second diaphragm (12) is also provided on the bracket (102); the second diaphragm (12) is annular and covers the second stepped groove (1023) and the basin body (101).

9. The thin speaker 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 vibration part (121) for vibrating to enhance bass is formed between the second diaphragm corrugation (122) and the third diaphragm corrugation (123).

10. A thin speaker according to any one of claims 1 to 9, characterized in that: The basin frame (1) is provided with a washer accommodating groove (151), and correspondingly, the basin frame (1) is also provided with a washer (15) for reducing magnetic resistance to perform magnetic conduction.

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