loudspeaker

Abstract

The utility model provides a kind of loudspeaker, it includes basin frame and the vibration system fixed to basin frame and drive magnetic circuit system of vibrating system vibration sound production, vibrating system includes diaphragm fixed to basin frame, voice coil and conductive piece electrically connected with voice coil for driving diaphragm vibration sound production;Voice coil includes at least two sub voice coils formed by winding in turn, wherein, the outgoing terminal of former winding sub voice coil is as the incoming terminal of latter sub voice coil, the incoming terminal of first sub voice coil is as total incoming terminal, the outgoing terminal of last sub voice coil is as total outgoing terminal, voice coil is electrically connected with conductive piece by total incoming terminal and total outgoing terminal;Magnetic circuit system includes upper clamping plate, at least one recess is provided in the side of upper clamping plate close to diaphragm, the projection of at least one in multiple lead terminals in voice coil vibration direction is located in recess.In comparison with relevant technology, the utility model's loudspeaker multi-voice coil connection is stable, simple structure, convenient for reducing magnetic circuit volume.

Description

[Technical Field]

[0001] This utility model relates to the field of electroacoustic technology, and more particularly to a loudspeaker. [Background Technology]

[0002] With the rapid development of technology, audio devices are becoming increasingly popular. Among the many forms of entertainment, high-quality music enjoyment is gradually becoming more widespread. As a result, speakers used for playing audio are being widely used in today's smart mobile devices.

[0003] The related technology of loudspeakers includes a vibration system and a magnetic circuit system that drives the vibration system to vibrate and produce sound. The vibration system includes a voice coil and a diaphragm. The voice coil is connected to an external circuit via a flexible printed circuit board (FPC) and vibrates under the influence of a magnetic field, causing the diaphragm to vibrate and produce sound. To improve loudspeaker performance, multiple voice coils can increase the loudspeaker's BL (bulk bottom radius) value and sensitivity. However, in the related technology of loudspeakers, the connection between multiple voice coils is generally that the voice coil lead of each voice coil is connected to the flexible printed circuit board separately. In this structure, the flexible printed circuit board occupies a lot of space, affecting the volume of the magnetic circuit, and multiple connection points are prone to unstable connection reliability issues, which affects the performance of the loudspeaker.

[0004] Therefore, it is necessary to propose a new type of loudspeaker to solve the above problems. [Utility Model Content]

[0005] The technical problem to be solved by this invention is to provide a loudspeaker with stable voice coil connection and better performance.

[0006] To solve the above-mentioned technical problems, this utility model provides a loudspeaker, which includes a frame, a vibration system fixed to the frame, and a magnetic circuit system for driving the vibration system to vibrate and produce sound. The vibration system includes a diaphragm fixed to the frame, a voice coil for driving the diaphragm to vibrate and produce sound, and a conductive element electrically connected to the voice coil.

[0007] The voice coil includes at least two sub-voice coils wound sequentially, wherein the outgoing terminal of the first wound sub-voice coil serves as the incoming terminal of the second wound sub-voice coil, the incoming terminal of the first wound sub-voice coil serves as the total incoming terminal of the voice coil, and the outgoing terminal of the last wound sub-voice coil serves as the total outgoing terminal of the voice coil. The voice coil is electrically connected to the conductive element through the total incoming terminal and the total outgoing terminal.

[0008] The magnetic circuit system includes a lower clamp plate fixed to the frame, a magnet assembly fixed to the lower clamp plate, and an upper clamp plate fixed to the magnet assembly on the side away from the lower clamp plate. The upper clamp plate has at least one recessed groove on the side near the diaphragm. At least one of the input terminal, the output terminal, the main input terminal, and the main output terminal has its projection in the vibration direction of the voice coil located in the groove.

[0009] Preferably, the voice coil includes a first sub-voice coil and a second sub-voice coil wound sequentially, and the magnet assembly includes a main magnet fixed to the lower clamping plate, a first auxiliary magnet arranged around the main magnet and forming a first magnetic gap with the main magnet, and a second auxiliary magnet arranged around the first auxiliary magnet and forming a second magnetic gap with the first auxiliary magnet. The first sub-voice coil is fixed to the diaphragm and inserted into the first magnetic gap, and the second sub-voice coil is fixed to the diaphragm and inserted into the second magnetic gap.

[0010] Preferably, the upper clamping plate includes a first upper clamping plate fixed to the first auxiliary magnet, and the groove includes a first groove and a second groove recessed on the side of the first upper clamping plate near the diaphragm. The projection of the connecting lead formed by the continuous winding between the output terminal of the first sub-voice coil and the input terminal of the second sub-voice coil in the vibration direction of the voice coil is located in the first groove, and the projection of the input terminal of the first sub-voice coil in the vibration direction of the voice coil is located in the second groove.

[0011] Preferably, the extension direction of the first groove is parallel to the extension direction of the second groove.

[0012] Preferably, the main incoming terminal and the main outgoing terminal are both located on the same long axis side or the same short axis side.

[0013] Preferably, the surface of the voice coil away from the lower clamp is defined as the upper surface, the surface of the voice coil near the main magnet is defined as the first side surface, and the input and output terminals of the first sub-voice coil are both disposed on the upper surface;

[0014] The input terminal of the second voice coil is disposed on the first side, and the output terminal of the second voice coil is disposed on the upper surface;

[0015] The connecting lead extends from the output terminal of the first voice coil away from the main magnet, bends on a plane parallel to the first side of the second voice coil towards the lower clamp, and connects to the input terminal of the second voice coil.

[0016] Preferably, the diaphragm includes a first sub-diaphragm and a second sub-diaphragm disposed around the first sub-diaphragm, the first sub-voice coil is fixedly connected to the first sub-diaphragm, the second sub-voice coil is fixedly connected to the second sub-diaphragm, and the second sub-voice coil is disposed around the outer periphery of the first sub-voice coil and spaced apart from each other.

[0017] Preferably, the height of the second voice coil is less than the height of the first voice coil.

[0018] Preferably, the vibration system further includes an elastic connector fixedly disposed between the second sub-diaphragm and the second sub-voice coil.

[0019] Preferably, the upper clamping plate further includes a main upper clamping plate fixed to the side of the main magnet relative to the lower clamping plate, and a second secondary upper clamping plate fixed to the side of the second secondary magnet relative to the lower clamping plate.

[0020] Compared with related technologies, the loudspeaker proposed in this utility model includes a frame, a vibration system fixed to the frame, and a magnetic circuit system for driving the vibration system to vibrate and produce sound. The vibration system includes a diaphragm fixed to the frame, a voice coil for driving the diaphragm to vibrate and produce sound, and a conductive element electrically connected to the voice coil. The voice coil includes at least two sub-voice coils wound sequentially, wherein the output terminal of the first wound sub-voice coil serves as the input terminal of the second wound sub-voice coil, the input terminal of the first wound sub-voice coil serves as the overall input terminal of the voice coil, and the last... The output terminal of the wound sub-voice coil serves as the main output terminal of the voice coil. The voice coil is electrically connected to the conductive element through the main input terminal and the main output terminal. The magnetic circuit system includes a lower clamping plate fixed to the frame, a magnet assembly fixed to the lower clamping plate, and an upper clamping plate fixed to the magnet assembly on the side away from the lower clamping plate. The upper clamping plate has at least one recessed groove on the side near the diaphragm. At least one of the input terminal, the output terminal, the main input terminal, and the main output terminal has its projection in the vibration direction of the voice coil located within the groove. In the above structure, the connection ends between the multiple sub-voice coils are interconnected by the winding wire of the voice coil, without the need for additional welding or gluing fixation. The structure is simple, facilitates the reduction of magnetic circuit volume, and ensures the sound performance of the loudspeaker. [Attached Image Description]

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0022] Figure 1 A schematic diagram of the structure of the loudspeaker provided in an embodiment of this utility model;

[0023] Figure 2 This is an exploded view of the overall structure of the loudspeaker provided in an embodiment of the present invention;

[0024] Figure 3 For along Figure 1 Cross-sectional view of line AA in the middle;

[0025] Figure 4 A schematic diagram of the voice coil structure of a loudspeaker provided in an embodiment of this utility model;

[0026] Figure 5 This is a partial exploded view of the speaker provided in an embodiment of the present invention.

Detailed Implementation Methods

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-3 As shown, this utility model embodiment provides a loudspeaker 100, which includes a frame 1, a vibration system 2 fixed to the frame 1, and a magnetic circuit system 3 for driving the vibration system 2 to vibrate and produce sound. The vibration system 3 includes a diaphragm 21 fixed to the frame 1, a voice coil 22 for driving the diaphragm 21 to vibrate and produce sound, and a conductive element 23 electrically connected to the voice coil 22.

[0029] The voice coil 22 includes at least two sub-voice coils wound sequentially, wherein the outgoing terminal of the first wound sub-voice coil serves as the incoming terminal of the second wound sub-voice coil, the incoming terminal of the first wound sub-voice coil serves as the total incoming terminal 221 of the voice coil 22, and the outgoing terminal of the last wound sub-voice coil serves as the total outgoing terminal 222 of the voice coil 22. The voice coil 22 is electrically connected to the conductive element 23 through the total incoming terminal 221 and the total outgoing terminal 222.

[0030] The magnetic circuit system 3 includes a lower clamping plate 31 fixed to the frame 1, a magnet assembly 32 fixed to the lower clamping plate 31, and an upper clamping plate 33 fixed to the magnet assembly 32 on the side away from the lower clamping plate 31. The upper clamping plate 33 has at least one recessed groove 3321 on the side near the diaphragm 21. At least one of the inlet terminal, the outlet terminal, the main inlet terminal 221, and the main outlet terminal 222 has its projection in the vibration direction of the voice coil 22 located in the groove 3321.

[0031] Through the winding process, the connection terminals between multiple voice coils are connected to each other by the voice coil wire, which can improve the integrity and stability of the voice coil structure, and eliminates the need for additional welding and gluing, thus simplifying the magnetic circuit volume.

[0032] On the other hand, continuous winding of multiple voice coils inevitably produces wiring between the voice coils. The design of the groove 3321 provides a clearance structure for the wiring position when the voice coil vibrates, thereby ensuring the sound production effect.

[0033] For details, please refer to Figure 4 , Figure 4 This is a schematic diagram of the voice coil 22 of the loudspeaker 100 provided in this embodiment of the present invention. In this embodiment, the voice coil 22 includes a first sub-voice coil 4 and a second sub-voice coil 5 formed by sequential winding. In this case, the first outgoing terminal 42 of the first sub-voice coil 4 serves as the second incoming terminal 51 of the second sub-voice coil 5, the first incoming terminal 41 of the first sub-voice coil 4 serves as the total incoming terminal 221, and the second outgoing terminal 52 of the second sub-voice coil 5 serves as the total outgoing terminal 222.

[0034] like Figure 4 As shown in the embodiment of this utility model, the multiple voice coils are nested. In a possible implementation, the first voice coil 4 and the second voice coil 5 are arranged side by side along the long axis or short axis of the loudspeaker.

[0035] Furthermore, the magnet assembly 32 includes a main magnet 321 fixed to the lower clamping plate 31, a first auxiliary magnet 322 surrounding the main magnet 321 and forming a first magnetic gap with the main magnet 321, and a second auxiliary magnet 323 surrounding the first auxiliary magnet 322 and forming a second magnetic gap with the first auxiliary magnet 322. The first voice coil 4 is fixed to the diaphragm 21 and inserted into the first magnetic gap, and the second voice coil 5 is fixed to the diaphragm 21 and inserted into the second magnetic gap. Due to the multi-voice coil design, multiple magnetic gaps need to be designed in the magnetic circuit system 3. It is understandable that the design of a multi-voice coil loudspeaker can increase the interaction area between the magnetic field and the current, which is beneficial to improving the sound performance of the loudspeaker 100.

[0036] For details, please refer to the corresponding information. Figure 2 , Figure 4 and Figure 5 The structure shown in this embodiment of the present invention includes an upper clamping plate 33 fixed to the first auxiliary magnet, a first upper clamping plate 332 fixed to the first auxiliary magnet, and a groove 3321 including a first groove 33211 and a second groove 33212 recessed on the side of the first upper clamping plate 332 near the diaphragm 21. The projection of the connecting lead 6 formed by continuous winding between the output terminal of the first voice coil 4 and the input terminal of the second voice coil 5 in the vibration direction of the voice coil 22 is located in the first groove 33211. The input terminal of the first voice coil 4 (i.e., Figure 4 The projection of the first input terminal 41 of the first sub-voice coil 4 in the vibration direction of the voice coil 22 is located within the second groove 33212. For example... Figure 5 As shown, the upper clamping plate 33 serves as a magnetic conductive structure, and its shape can be designed according to needs. In this embodiment of the present invention, since different voice coils are connected to each other by a common connecting line and there is no adhesive protection, setting a groove 3321 at the corresponding position of the upper clamping plate 33 is beneficial to maintain the structural stability of its connecting line part and to prevent the voice coil 22 from contacting the connecting line during vibration, which would affect the sound performance of the speaker 100.

[0037] It is understood that, as defined in this embodiment of the present invention, the second voice coil 5 is disposed outside the first voice coil 4 and surrounds it, while the conductive element 23 is disposed closer to the second voice coil 5. When the first input terminal 41 of the first voice coil 4 is used as the main input terminal 221, it must extend from the inside out to a position beyond the second voice coil 5 to make an electrical connection with the conductive element 23. Therefore, the second groove 33212 provided at the projection position on the first upper clamping plate 332 can ensure the positional redundancy of the lead structure when the diaphragm 22 vibrates. On the other hand, the second output terminal 52 of the second voice coil 5, as the main output terminal, can extend directly from the inside out to the conductive element 23 from the second voice coil 5. Whether a groove needs to be opened on the second upper clamping plate 333 can be determined according to the specific shape of the second magnet 323 (in this embodiment of the present invention, such as...). Figure 2 As shown, the second magnet 323 has a gap on the short shaft, so there is no need to make a groove on the second upper clamping plate 333.

[0038] Preferably, the main inlet terminal 221 and the main outlet terminal 222 are both located on the same long axis side or the same short axis side. (Refer to...) Figure 2As shown in the embodiment of this utility model, the main inlet terminal 221 and the main outlet terminal 222 are both located on the same short axis side, so that the voice coil 22 can be electrically connected only through the same conductive element 23 located in the loudspeaker 100, thereby simplifying the loudspeaker structure.

[0039] Furthermore, the surface of the voice coil 22 away from the lower clamping plate 332 is defined as the upper surface, and the surface of the voice coil 22 close to the main magnet 321 is defined as the first side surface. The inlet and outlet terminals of the first sub-voice coil 4 are both located on the upper surface.

[0040] The input terminal of the second voice coil 5 is disposed on the first side, and the output terminal of the second voice coil 5 is disposed on the upper surface;

[0041] The connecting lead 6 extends from the output terminal of the first voice coil 4 away from the main magnet 321, and bends towards the lower clamping plate 31 on a plane parallel to the first side of the second voice coil 5, and connects to the input terminal of the second voice coil 5.

[0042] In this embodiment of the invention, different voice coils are inserted into different magnetic gaps and fixed to the diaphragm 21 respectively. The first input terminal 41 of the first voice coil 4 and the second output terminal 52 of the second voice coil 5 (i.e., the main input terminal 221 and the main output terminal 222, respectively) are positioned on the upper surface away from the lower clamping plate 31. This prevents the lead wire connected to the conductive element 23 from contacting the structure of the magnetic circuit system when the voice coil 22 vibrates. For the same reason, the connecting lead 6 is positioned as follows: Figure 4 and 5 The shape shown extends parallel from the first output terminal 42 on the upper surface of the first voice coil 4 to the first side of the second voice coil 5, and is bent and connected to the second input terminal 51 of the second voice coil 5. This allows the entire voice coil 22 to maintain a certain distance from the structure of the magnetic circuit system when it vibrates, so as to ensure the sound production effect.

[0043] In addition, such as Figure 5 As shown, since the connecting lead 6 generated by continuous winding needs to extend from the first output terminal 42 on the upper surface of the first voice coil 4 and bend to the second input terminal 51 of the second voice coil, in a possible implementation, the second input terminal 51 is located on the first side of the second voice coil 5 closer to the lower clamping plate 31. This could cause the connecting lead 6 to contact the upper clamping plate 332 on a plane parallel to the first side of the second voice coil 5. To avoid this, an opening 332111 is provided at the edge of the first recess 33211 near the second voice coil 5, forming a clearance structure for the connecting lead 6 to travel and connect to the second input terminal 51, ensuring that the voice coil 22 maintains a distance from the structure of the magnetic circuit system when vibrating.

[0044] Preferably, the extension direction of the first groove 33211 is parallel to the extension direction of the second groove 33212. The extension direction of the groove refers to the opening direction of the groove on the surface parallel to the upper surface of the voice coil 22. This design helps to keep the shape of the main inlet terminal 221 and the connecting lead 6 uniform, simplifying the speaker packaging process.

[0045] To improve the speaker's sound performance, the upper clamping plate 33 further includes a main upper clamping plate 331 fixed to the side of the main magnet 321 relative to the lower clamping plate 31, and a second secondary upper clamping plate 333 fixed to the side of the second auxiliary magnet 323 relative to the lower clamping plate 31. The upper clamping plate configuration helps optimize the speaker's sound performance and improves structural strength.

[0046] Preferably, the diaphragm 21 includes a first sub-diaphragm 211 and a second sub-diaphragm 212 surrounding the first sub-diaphragm 211. The first voice coil 4 is fixedly connected to the first sub-diaphragm 211, and the second voice coil 5 is fixedly connected to the second sub-diaphragm 212, such that the second voice coil 5 surrounds the outer periphery of the first voice coil 4 and is spaced apart from each other. Corresponding to the multi-voice coil design, the design of multiple diaphragms can further increase the contact area between the vibration system 2 and the air, improve the sound radiation efficiency, and thus optimize the sound production effect.

[0047] The height of the second voice coil 5 is less than the height of the first voice coil 4. Multiple voice coils can be optimized for different frequency ranges as needed, for example, by differentiating their height and volume, which can improve the layering of the speaker's sound.

[0048] The vibration system 2 further includes an elastic connector 24 fixedly disposed between the second sub-diaphragm 212 and the second sub-voice coil 5. The elastic connector 24 can act as a buffer between the voice coil and the diaphragm, optimizing the vibration effect.

[0049] Compared with related technologies, the loudspeaker proposed in this utility model includes a frame, a vibration system fixed to the frame, and a magnetic circuit system for driving the vibration system to vibrate and produce sound. The vibration system includes a diaphragm fixed to the frame, a voice coil for driving the diaphragm to vibrate and produce sound, and a conductive element electrically connected to the voice coil. The voice coil includes at least two sub-voice coils wound sequentially, wherein the output terminal of the first wound sub-voice coil serves as the input terminal of the second wound sub-voice coil, the input terminal of the first wound sub-voice coil serves as the overall input terminal of the voice coil, and the last... The output terminal of the wound sub-voice coil serves as the main output terminal of the voice coil. The voice coil is electrically connected to the conductive element through the main input terminal and the main output terminal. The magnetic circuit system includes a lower clamping plate fixed to the frame, a magnet assembly fixed to the lower clamping plate, and an upper clamping plate fixed to the magnet assembly on the side away from the lower clamping plate. The upper clamping plate has at least one recessed groove on the side near the diaphragm. At least one of the input terminal, the output terminal, the main input terminal, and the main output terminal has its projection in the vibration direction of the voice coil located within the groove. In the above structure, the connection ends between the multiple sub-voice coils are interconnected by the winding wire of the voice coil, without the need for additional welding or gluing fixation. The structure is simple, facilitates the reduction of magnetic circuit volume, and ensures the sound performance of the loudspeaker.

[0050] The above description is merely an embodiment of this utility model. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this utility model, but these improvements all fall within the protection scope of this utility model.

Claims

1. A loudspeaker comprising a frame, a vibration system fixed to the frame, and a magnetic circuit system for driving the vibration system to vibrate and generate sound, the vibration system comprising a diaphragm fixed to the frame, a voice coil for driving the diaphragm to vibrate and generate sound, and a conductive element electrically connected to the voice coil, characterized in that, The voice coil includes at least two sub-voice coils wound sequentially, wherein the outgoing terminal of the first wound sub-voice coil serves as the incoming terminal of the second wound sub-voice coil, the incoming terminal of the first wound sub-voice coil serves as the total incoming terminal of the voice coil, and the outgoing terminal of the last wound sub-voice coil serves as the total outgoing terminal of the voice coil. The voice coil is electrically connected to the conductive element through the total incoming terminal and the total outgoing terminal. The magnetic circuit system includes a lower clamp plate fixed to the frame, a magnet assembly fixed to the lower clamp plate, and an upper clamp plate fixed to the magnet assembly on the side away from the lower clamp plate. The upper clamp plate has at least one recessed groove on the side near the diaphragm. At least one of the input terminal, the output terminal, the main input terminal, and the main output terminal has its projection in the vibration direction of the voice coil located in the groove.

2. The loudspeaker according to claim 1, characterized in that, The voice coil includes a first sub-voice coil and a second sub-voice coil wound sequentially. The magnet assembly includes a main magnet fixed to the lower clamp, a first auxiliary magnet surrounding the main magnet and forming a first magnetic gap with the main magnet, and a second auxiliary magnet surrounding the first auxiliary magnet and forming a second magnetic gap with the first auxiliary magnet. The first sub-voice coil is fixed to the diaphragm and inserted into the first magnetic gap, and the second sub-voice coil is fixed to the diaphragm and inserted into the second magnetic gap.

3. The loudspeaker according to claim 2, characterized in that, The upper clamping plate includes a first upper clamping plate fixed to the first auxiliary magnet. The groove includes a first groove and a second groove recessed on the side of the first upper clamping plate near the diaphragm. The projection of the connecting lead formed by the continuous winding between the output terminal of the first sub-voice coil and the input terminal of the second sub-voice coil in the vibration direction of the voice coil is located in the first groove, and the projection of the input terminal of the first sub-voice coil in the vibration direction of the voice coil is located in the second groove.

4. The loudspeaker according to claim 3, characterized in that, The extension direction of the first groove is parallel to the extension direction of the second groove.

5. The loudspeaker according to claim 1, characterized in that, Both the main incoming terminal and the main outgoing terminal are located on the same long axis side or the same short axis side.

6. The loudspeaker according to claim 3, characterized in that, The surface of the voice coil away from the lower clamp is defined as the upper surface, and the surface of the voice coil near the main magnet is defined as the first side surface. The input and output terminals of the first sub-voice coil are both located on the upper surface. The input terminal of the second voice coil is disposed on the first side, and the output terminal of the second voice coil is disposed on the upper surface; The connecting lead extends from the output terminal of the first voice coil away from the main magnet, bends on a plane parallel to the first side of the second voice coil towards the lower clamp, and connects to the input terminal of the second voice coil.

7. The loudspeaker according to claim 2, characterized in that, The diaphragm includes a first sub-diaphragm and a second sub-diaphragm surrounding the first sub-diaphragm. The first sub-voice coil is fixedly connected to the first sub-diaphragm, and the second sub-voice coil is fixedly connected to the second sub-diaphragm, such that the second sub-voice coil surrounds the outer periphery of the first sub-voice coil and is spaced apart from each other.

8. The loudspeaker according to claim 2, characterized in that, The height of the second voice coil is less than the height of the first voice coil.

9. The loudspeaker according to claim 7, characterized in that, The vibration system also includes an elastic connector fixedly disposed between the second sub-diaphragm and the second sub-voice coil.

10. The loudspeaker according to claim 2, characterized in that, The upper clamping plate also includes a main upper clamping plate fixed to the side of the main magnet relative to the lower clamping plate, and a second upper clamping plate fixed to the side of the second auxiliary magnet relative to the lower clamping plate.

Images