Miniature loudspeaker and loudspeaker module

Abstract

The utility model provides a miniature loudspeaker and loudspeaker module group, including shell, magnet, top plate, bottom plate, said shell inner side is equipped with magnet, top plate, bottom plate, magnet and top plate both have the center perforation structure, the top surface of magnet is equipped with top plate, the bottom surface of magnet is equipped with bottom plate, the bottom plate is equipped with the top plate, the bottom plate is equipped with the top plate, the bottom plate is equipped with the bottom plate, and the bottom plate is equipped with the bottom plate. The top of the bottom plate is fixedly connected with a center column, and the center column penetrates through the magnet and the center penetrating hole of the top plate. The utility model has the advantages that the front sound cavity is arranged between the top shell and the disc body, the filling layer is designed at the edge inside the front sound cavity, and the sound absorbing material such as spherical foam is filled inside the filling layer so as to absorb redundant sound waves, reduce the influence of standing waves and reflected waves and prevent the front sound cavity from being too long and narrow. A damping structure, such as a plastic damping net, is additionally arranged in the front sound cavity, the damping net is located above the disc body, and the edge of the damping net is bonded with the filling layer, so that vibration and reflection of sound waves are inhibited, the sound quality is improved, and the problems existing in the prior art are solved.

Description

Technical Field

[0001] This utility model relates to the field of loudspeaker technology, and in particular to a miniature loudspeaker and loudspeaker module. Background Technology

[0002] Miniature loudspeakers, as commonly used electroacoustic transducers that convert electrical energy into sound energy, play an indispensable role in sound amplifier systems.

[0003] As consumer electronics products such as mobile phones and tablets, especially large wearable electronic devices such as AR / VR, have placed higher demands on both thinness and performance, miniature speakers, as an important component of these products, are also facing increasingly higher requirements in terms of performance and size.

[0004] The overall size of existing miniature loudspeakers is becoming increasingly flat to meet the requirement of a thinner overall loudspeaker module. However, this makes the front acoustic cavity of the loudspeaker module relatively narrow and long, which easily generates standing waves in the front acoustic cavity. This causes the frequency response curve of the loudspeaker module to have a large difference in peaks and troughs in some frequency bands, affecting the sound quality. Utility Model Content

[0005] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0006] Therefore, one objective of this utility model is to provide a miniature loudspeaker and loudspeaker module to solve the problems mentioned in the background art and overcome the shortcomings of the prior art.

[0007] To achieve the above objectives, one embodiment of the present invention provides a miniature loudspeaker and loudspeaker module, including a housing, a magnet, a top plate, and a bottom plate. The magnet, top plate, and bottom plate are installed on the inner side of the housing. The magnet and the top plate are both centrally perforated structures. The top plate is attached to the top surface of the magnet, and the bottom plate is attached to the bottom surface of the magnet. A central post is fixedly connected to the top of the bottom plate, and the central post passes through the central perforation of the magnet and the top plate.

[0008] A voice coil is inserted into the outer gap of the central column, and a diaphragm is fixedly connected to the outer side of the voice coil. The edge of the diaphragm is fixedly connected to the inner side of the outer shell.

[0009] The top of the voice coil is fixedly connected to a disc body, which is fixedly connected to the inside of the outer casing.

[0010] A top shell is fixedly connected to the top of the outer shell, and the space between the top shell and the disc body is the front acoustic cavity. A filling layer is fixedly connected to the edge of the gap between the top shell and the disc body, and sound-absorbing material is provided inside the filling layer.

[0011] A damping net is fixedly connected to the inner side of the filling layer.

[0012] Preferably, in any of the above schemes, the top surface of the top plate is flush with the top surface of the central column, and the top plate and the bottom plate have the same thickness.

[0013] The above technical solution is adopted: This miniature speaker has a flat design.

[0014] The working principle of this miniature loudspeaker is as follows: the magnet is a permanent magnet, and the voice coil is a basic electromagnet. When current flows through this coil, a magnetic field is generated around it. The direction and strength of this magnetic field change with the direction and magnitude of the current. A permanent magnetic field exists around the voice coil. When the magnetic field generated by the voice coil interacts with the permanent magnetic field, the voice coil experiences a magnetic force. The magnitude and direction of this force change with the current, causing the voice coil to vibrate axially. The force on the voice coil is transmitted to the connected diaphragm, causing it to vibrate. These vibrations change with the current, thus driving the surrounding air molecules to vibrate, forming sound waves. These sound waves propagate through the air and are ultimately received and interpreted as sound by our ears.

[0015] Preferably, in any of the above embodiments, the top surface of the magnet is the N pole and the bottom surface of the magnet is the S pole.

[0016] Preferably, in any of the above embodiments, the outer surface of the voice coil is wound with an electrically conductive wire, and the voice coil is bonded to the diaphragm.

[0017] The above technical solution is adopted: the connector of this miniature speaker and speaker module has a hole on the horizontal part of the connector for mounting the entire module with screws.

[0018] The core structure of this miniature loudspeaker and loudspeaker module consists of: a disc, a top shell, a filling layer, sound-absorbing material within the filling layer, and a damping mesh. The front acoustic cavity is located between the top shell and the disc. A filling layer, filled with sound-absorbing material such as spherical foam, is designed at the inner edge of the front acoustic cavity to absorb excess sound waves, reduce the influence of standing waves and reflected waves, and prevent the front acoustic cavity from becoming too narrow. A damping structure, such as a plastic damping mesh, is added within the front acoustic cavity. The damping mesh is located above the disc, and its edges are bonded to the filling layer to suppress sound wave vibration and reflection, thereby improving sound quality and addressing the problems existing in current technologies.

[0019] Preferably, in any of the above embodiments, the top shell has densely packed openings, and the sound-absorbing material in the filling layer is specifically spherical foam particles.

[0020] Preferably, in any of the above embodiments, the damping mesh is bonded to the filling layer, the damping mesh is specifically made of plastic, and the bottom of the top shell consists of, in sequence, the damping mesh, the disc, the diaphragm, the voice coil, the top plate, the magnet, and the bottom plate.

[0021] The speaker module includes the aforementioned miniature speaker and also includes connectors, which are fixedly connected to the four corners of the top shell and are bent.

[0022] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0023] This miniature loudspeaker and loudspeaker module utilizes a combination of a disc body, a top shell, a filling layer, sound-absorbing material within the filling layer, and a damping mesh. The space between the top shell and the disc body forms the front acoustic cavity. A filling layer, filled with sound-absorbing material such as spherical foam, is designed at the inner edge of the front acoustic cavity to absorb excess sound waves, reduce the influence of standing waves and reflected waves, and prevent the front acoustic cavity from becoming too narrow. A damping structure, such as a plastic damping mesh, is added within the front acoustic cavity. The damping mesh is located above the disc body, and its edges are bonded to the filling layer to suppress sound wave vibration and reflection, thereby improving sound quality and addressing the problems existing in current technologies.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0026] Figure 1 This is a first-view structural schematic diagram of the present invention;

[0027] Figure 2 This is a structural schematic diagram of the present invention from a second perspective;

[0028] Figure 3 This is a partial cross-sectional view of the internal structure of this utility model.

[0029] In the diagram: 1-outer shell, 2-magnet, 3-top plate, 4-bottom plate, 5-center column, 6-voice coil, 7-diaphragm, 8-disc body, 9-top shell, 10-filling layer, 11-damping mesh, 12-connector. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] like Figure 1-3 As shown, this miniature loudspeaker and loudspeaker module includes a housing 1, a magnet 2, a top plate 3, and a bottom plate 4. The magnet 2, the top plate 3, and the bottom plate 4 are installed on the inner side of the housing 1. The magnet 2 and the top plate 3 are both centrally perforated structures. The top plate 3 is attached to the top surface of the magnet 2, and the bottom plate 4 is attached to the bottom surface of the magnet 2. A central post 5 is fixedly connected to the top of the bottom plate 4, and the central post 5 passes through the central perforation of the magnet 2 and the top plate 3.

[0033] A voice coil 6 is inserted into the gap on the outside of the central column 5. A diaphragm 7 is fixedly connected to the outside of the voice coil 6. The edge of the diaphragm 7 is fixedly connected to the inside of the outer shell 1.

[0034] The top of the voice coil 6 is fixedly connected to the disc body 8, which is fixedly connected to the inside of the outer casing 1.

[0035] A top shell 9 is fixedly connected to the top of the outer shell 1. The space between the top shell 9 and the disc body 8 is the front acoustic cavity. A filling layer 10 is fixedly connected to the edge of the gap between the top shell 9 and the disc body 8. Sound-absorbing material is provided inside the filling layer 10.

[0036] A damping net 11 is fixedly connected to the inner side of the filling layer 10.

[0037] Example 1: The top surface of the top plate 3 is flush with the top surface of the central column 5, and the thicknesses of the top plate 3 and the bottom plate 4 are the same. This miniature loudspeaker features a flat design. The top surface of the magnet 2 is the N pole, and the bottom surface of the magnet 2 is the S pole.

[0038] Example 2: A live wire is wound around the outer surface of the voice coil 6, and the voice coil 6 is bonded to the diaphragm 7. The top shell 9 has densely packed openings, and the sound-absorbing material in the filling layer 10 is specifically spherical foam particles. The damping mesh 11 is bonded to the filling layer 10, and the damping mesh 11 is specifically made of plastic. Below the top shell 9, in sequence, are the damping mesh 11, the disc 8, the diaphragm 7, the voice coil 6, the top plate 3, the magnet 2, and the bottom plate 4.

[0039] The speaker module includes the aforementioned miniature speaker and also includes connector 12, which is fixedly connected to the four corners of the top shell 9 and is bent.

[0040] The working principle of this utility model is as follows:

[0041] The working principle of this miniature loudspeaker is as follows: Magnet 2 is a permanent magnet, and voice coil 6 is a basic electromagnet. When current flows through this coil, a magnetic field is generated around it. The direction and strength of this magnetic field change with the direction and magnitude of the current. A permanent magnetic field exists around voice coil 6. When the magnetic field generated by the current flowing through voice coil 6 interacts with the permanent magnetic field, voice coil 6 experiences a magnetic force. The magnitude and direction of this force change with the current, causing voice coil 6 to vibrate axially. The force on voice coil 6 is transmitted to the connected diaphragm 7, causing the diaphragm to vibrate. These vibrations change with the current, thus driving the surrounding air molecules to vibrate, forming sound waves. The sound waves propagate through the air and are ultimately received and interpreted as sound by our ears.

[0042] The connector 12 of this miniature speaker and speaker module has a hole on its lateral portion for mounting the entire module with screws.

[0043] Compared with the prior art, the present invention has the following advantages:

[0044] This miniature loudspeaker and loudspeaker module, through the coordinated arrangement of a disc body 8, a top shell 9, a filling layer 10, sound-absorbing material in the filling layer 10, and a damping mesh 11, forms the front acoustic cavity. The filling layer 10 is designed at the inner edge of the front acoustic cavity, filled with sound-absorbing material such as spherical foam to absorb excess sound waves, reduce the influence of standing waves and reflected waves, and prevent the front acoustic cavity from being too narrow. A damping structure, such as a plastic damping mesh 11, is added inside the front acoustic cavity. The damping mesh 11 is located above the disc body 8, and its edge is bonded to the filling layer 10 to suppress sound wave vibration and reflection, thereby improving sound quality and solving the problems existing in the prior art.

Claims

1. A miniature loudspeaker, characterized in that, The device includes an outer shell (1), a magnet (2), a top plate (3), and a bottom plate (4). The magnet (2), the top plate (3), and the bottom plate (4) are installed on the inner side of the outer shell (1). The magnet (2) and the top plate (3) are both centrally perforated structures. The top plate (3) is attached to the top surface of the magnet (2), and the bottom plate (4) is attached to the bottom surface of the magnet (2). A central column (5) is fixedly connected to the top of the bottom plate (4). The central column (5) passes through the central perforation of the magnet (2) and the top plate (3). A voice coil (6) is inserted into the outer gap of the central column (5), and a diaphragm (7) is fixedly connected to the outer side of the voice coil (6). The edge of the diaphragm (7) is fixedly connected to the inner side of the outer shell (1). The top of the voice coil (6) is fixedly connected to the disc body (8), and the disc body (8) is fixedly connected to the inside of the outer shell (1); The top of the outer shell (1) is fixedly connected to a top shell (9), and the space between the top shell (9) and the disc body (8) is a front acoustic cavity. A filling layer (10) is fixedly connected to the edge of the gap between the top shell (9) and the disc body (8), and the filling layer (10) is provided with sound-absorbing material inside. A damping mesh (11) is fixedly connected to the inner side of the filling layer (10).

2. A miniature loudspeaker as described in claim 1, characterized in that: The top surface of the top plate (3) is flush with the top surface of the central column (5), and the top plate (3) and the bottom plate (4) have the same thickness.

3. A miniature loudspeaker as described in claim 2, characterized in that: The top surface of the magnet (2) is the N pole, and the bottom surface of the magnet (2) is the S pole.

4. A miniature loudspeaker as described in claim 3, characterized in that: The outer surface of the voice coil (6) is wound with an electrically conductive wire, and the voice coil (6) is bonded to the diaphragm (7).

5. A miniature loudspeaker as described in claim 4, characterized in that: The top shell (9) has dense openings, and the sound-absorbing material in the filling layer (10) is specifically spherical foam particles.

6. A miniature loudspeaker as described in claim 5, characterized in that: The damping mesh (11) is bonded to the filling layer (10). The damping mesh (11) is made of plastic. The bottom of the top shell (9) consists of the damping mesh (11), the disc (8), the diaphragm (7), the voice coil (6), the top plate (3), the magnet (2), and the bottom plate (4).

7. A speaker module, characterized in that: The device includes the miniature loudspeaker according to any one of claims 1-6, and further includes a connector (12) fixedly connected to the four corners of the top shell (9), wherein the connector (12) is bent.

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