Light and thin loudspeaker unit

Abstract

The invention discloses a light and thin loudspeaker unit, and belongs to the technical field of loudspeakers. The light and thin loudspeaker unit comprises a loudspeaker shell, an outer soundboard is arranged above the loudspeaker shell, a dustproof sealing ring is arranged between the outer soundboard and the loudspeaker shell, the dustproof sealing ring is attached to the outer soundboard and the loudspeaker shell, and an inner soundboard is arranged below the outer soundboard. In order to solve the problems that a magnetic circuit system is still installed in an existing light and thin loudspeaker, so that the overall weight of the loudspeaker is increased, and the internal space of the loudspeaker cannot be reduced due to the limitation of the installation space of a magnetic circuit, the loudspeaker is composed of an electrostatic diaphragm and a supporting structure; in the prior art, signals can cause vibration of the film, the vibration can be spread along the whole film area, the sound effect similar to that of a circular diaphragm loudspeaker is generated, but the size and the internal space of the loudspeaker are far smaller than those of a traditional circular diaphragm loudspeaker.

Description

Technical Field

[0001] The invention relates to the technical field of loudspeakers, and in particular to a thin and light loudspeaker unit. Background Art

[0002] The principle of the speaker's sound generation is that the changing audio electrical signal is fed into the voice coil, and the voice coil is subjected to the changing Ampere force due to the changing current under the magnetic field formed by the magnetic circuit unit, which in turn drives the diaphragm connected to the voice coil to vibrate to drive the front and rear air to generate sound waves. With the development of technology, digital products such as mobile phones and laptops are becoming thinner and lighter, so higher requirements are put forward for the thinness of speakers;

[0003] The existing thin and light speakers still have a magnetic circuit system installed inside, which not only increases the overall weight of the speaker, but also limits the installation space of the magnetic circuit and prevents the internal space of the speaker from being reduced. Summary of the invention

[0004] The purpose of the present invention is to provide a thin and lightweight speaker unit, which consists of an electrostatic diaphragm and a supporting structure. When an audio signal is transmitted through the circuit of the speaker, the signal will cause the membrane to vibrate. This vibration will propagate along the entire membrane area and produce a sound effect similar to that of a circular diaphragm speaker, but the volume and internal space are much smaller than traditional circular diaphragm speakers, which can solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a thin and light speaker unit, comprising a speaker shell, an outer sound board is arranged above the speaker shell, a dustproof sealing ring is arranged between the outer sound board and the speaker shell, wherein the dustproof sealing ring is bonded with the outer sound board and the speaker shell, an inner sound board is arranged below the outer sound board, an electrostatic diaphragm is arranged between the inner sound board and the outer sound board, wherein the electrostatic diaphragm is bonded with the outer sound board and the inner sound board, the speaker is composed of the electrostatic diaphragm and a supporting structure, the film is made of polyethylene material, has good vibration performance and high-frequency response characteristics, the film is fixed between the inner sound board and the outer sound board, the outer sound board and the inner sound board are designed as outwardly convex arc surface structures, which is conducive to the propagation of sound, when the audio signal is transmitted through the circuit of the speaker, the signal will cause the film to vibrate, this vibration will propagate along the entire film area, and produce sound effects similar to those of a circular diaphragm speaker.

[0006] Furthermore, an inner sound cavity is provided inside the speaker housing, an insulating socket is provided inside the inner sound cavity, the insulating socket and the speaker housing are configured as an integrated structure, a sound source analysis module is provided inside the insulating socket, the sound source analysis module can receive external audio signals, and after conversion, transmit them to the electrostatic diaphragm to cause it to vibrate.

[0007] Furthermore, a wiring back plate is provided below the sound source analysis module, and the wiring back plate is electrically connected to the sound source analysis module. The outer surfaces of the outer sound board and the inner sound board are provided with sound holes, and the bottom of the inner sound board is provided with an integrally formed plywood. The bottom of the electrostatic diaphragm is provided with a membrane edge seal, and the sound holes are designed to enhance the sound propagation efficiency and avoid obstruction of the sound generated by the vibration of the electrostatic diaphragm.

[0008] Furthermore, a supporting hoop is provided on the inner side of the dustproof sealing ring, and the supporting hoop is connected to the speaker housing through a slot, wherein the outer sound board is located above the supporting hoop, the electrostatic diaphragm is attached to the inner side of the supporting hoop, and a buffer capsule is provided below the inner sound board, and a support ring is provided on the outer bottom of the buffer capsule. When the electrostatic diaphragm vibrates and makes a sound, the sound will be transmitted in two directions at the same time, and the sound transmitted to the inside of the speaker can be absorbed by the buffer capsule. The inside of the buffer capsule is in a vacuum state, and the buffer capsule will not cause damage to other parts when vibration and collision occur, and will not generate noise due to impact, thereby ensuring the overall sound effect of the speaker to the greatest extent.

[0009] Furthermore, two sound-absorbing ring plates are arranged below the support ring, and the sound-absorbing ring plates are distributed on both sides of the sound source analysis module. Ring cavities are arranged on both side surfaces of the sound-absorbing ring plates, and a plurality of adjusting springs are arranged inside the ring cavities. The upper and lower sides of the sound-absorbing ring plates are respectively connected to the speaker housing and the support ring through adjusting springs. When the buffer capsule vibrates, the outer support ring is driven, and the bottom of the support ring is connected to the sound-absorbing ring plate, and a plurality of adjusting springs are arranged between the two. Vibration can be absorbed and weakened by adjusting the springs and the sound-absorbing ring plate, so that when the speaker is placed on a desktop, no resonance will be generated due to playback.

[0010] Furthermore, sound source connectors are provided on both sides of the bottom of the sound source analysis module, and a conductive paddle is provided on one side of the sound source connector, wherein the conductive paddle is electrically connected to the sound source analysis module through the sound source connector, and one end of the conductive paddle is in contact with the electrostatic diaphragm. The conductive paddle can be used to transmit electrical signals to the electrostatic diaphragm, thereby causing the electrostatic diaphragm to vibrate.

[0011] Furthermore, a plurality of support pulleys are provided on the inner surface of the support hoop, and the support pulleys are rotatably connected to the support hoop. An electric-controlled reel is provided below the conductive paddle, and a rotating support is provided at the bottom of the electric-controlled reel. The support pulleys are located between the support hoop and the electrostatic diaphragm. When the electrostatic diaphragm is performing a tensioning operation, the support pulleys can effectively reduce the friction force exerted on the film during the moving and traction process, thereby avoiding deformation and damage of the film due to excessive friction.

[0012] Furthermore, a drag hoop is provided on the outer side of the electric control reel, and the drag hoop is connected to the membrane edge seal via a slot, and an integrated threading edge seal is provided at the bottom of the drag hoop, and an elastic pull cord is provided inside the threading edge seal, wherein the threading edge seal is connected to the electric control reel via the elastic pull cord, and the elastic pull cord can be tightened when the electric control reel rotates, thereby driving the drag hoop to move downward, and during the movement of the drag hoop, the electrostatic diaphragm between the outer sound board and the inner sound board will be tensioned, thereby preventing the film from becoming soft and deformed under a long-term vibration environment, thereby ensuring the sound effect of the speaker.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The speaker of the present invention is composed of an electrostatic diaphragm and a supporting structure. The film is made of polyethylene material and has good vibration performance and high-frequency response characteristics. The film is fixed between the inner sound board and the outer sound board. The outer sound board and the inner sound board are designed to be convex arc structures, which is conducive to the propagation of sound. When the audio signal is transmitted through the circuit of the speaker, the signal will cause the film to vibrate. This vibration will propagate along the entire film area and produce a sound effect similar to that of a circular diaphragm speaker, but the volume and internal space are much smaller than those of a traditional circular diaphragm speaker.

[0015] 2. In the present invention, the buffer capsule will drive the outer support ring when vibrating, and the bottom of the support ring is connected to the sound-absorbing ring plate, and a plurality of adjustment springs are arranged between the two. Vibration can be absorbed and weakened by adjusting the springs and the sound-absorbing ring plate, so that when the speaker is placed on a desktop, resonance will not be generated due to playback;

[0016] 3. In the present invention, the elastic rope can be tightened when the electric-controlled reel rotates, thereby driving the towing hoop to move downward. During the movement of the towing hoop, the electrostatic diaphragm between the outer sound plate and the inner sound plate will be tensioned, thereby preventing the film from becoming soft and deformed under a long-term vibration environment, thereby ensuring the sound effect of the speaker. When the electrostatic diaphragm is being tensioned, the bracket pulley can effectively reduce the friction force on the film during the moving and traction process, thereby preventing the film from being deformed and damaged due to excessive friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the overall front view of the present invention;

[0018] Figure 2 It is a schematic diagram of the overall decomposition structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0020] Figure 4 It is a schematic diagram of the overall side section structure of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the sound source analysis module of the present invention;

[0022] Figure 6 It is a schematic diagram of the structure of the electrically controlled reel of the present invention.

[0023] In the figure: 1. speaker housing; 2. outer sound board; 3. inner sound board; 4. electrostatic diaphragm; 5. buffer capsule; 6. sound source analysis module; 101. dustproof sealing ring; 102. wiring back plate; 103. inner sound cavity; 104. supporting hoop; 105. sound-absorbing ring plate; 106. electrically controlled reel; 1031. insulating card seat; 1041. bracket pulley; 1051. ring cavity; 1052. adjusting spring; 1061. drag hoop plate; 1062. threading edge sealing; 1063. rotating support; 201. sound hole; 301. plywood; 401. membrane edge sealing; 501. support ring; 601. sound source connector; 602. conduction pick. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In order to solve the problem that the existing thin and light speakers still have a magnetic circuit system installed inside, which not only increases the overall weight of the speaker, but also limits the installation space of the magnetic circuit and cannot reduce the internal space of the speaker; please refer to Figure 1-6 , this embodiment provides the following technical solutions:

[0026] A thin and light speaker unit comprises a speaker housing 1, an outer sound board 2 is arranged above the speaker housing 1, a dustproof sealing ring 101 is arranged between the outer sound board 2 and the speaker housing 1, wherein the dustproof sealing ring 101 is bonded with the outer sound board 2 and the speaker housing 1, an inner sound board 3 is arranged below the outer sound board 2, an electrostatic diaphragm 4 is arranged between the inner sound board 3 and the outer sound board 2, wherein the electrostatic diaphragm 4 is bonded with the outer sound board 2 and the inner sound board 3, the speaker is composed of the electrostatic diaphragm 4 and a supporting structure, the film is made of polyethylene material, and has good vibration performance and high-frequency response characteristics, the film is fixed between the inner sound board 3 and the outer sound board 2, the outer sound board 2 and the inner sound board 3 are both designed as convex arc surface structures, which is conducive to the propagation of sound, when the audio signal is transmitted through the circuit of the speaker, the signal will cause the film to vibrate, the vibration will propagate along the entire film area, and produce a sound effect similar to that of a circular diaphragm speaker, but the volume and internal space are much smaller than those of a traditional circular diaphragm speaker;

[0027] An inner sound cavity 103 is provided inside the speaker housing 1, an insulating card seat 1031 is provided inside the inner sound cavity 103, the insulating card seat 1031 and the speaker housing 1 are provided as an integrated structure, a sound source analysis module 6 is provided inside the insulating card seat 1031, and the sound source analysis module 6 can receive an external audio signal and transmit it to the electrostatic diaphragm 4 after conversion to make it vibrate;

[0028] A wiring back plate 102 is provided below the sound source analysis module 6, and the wiring back plate 102 is electrically connected to the sound source analysis module 6. The outer surfaces of the outer sound board 2 and the inner sound board 3 are both provided with sound holes 201. The bottom of the inner sound board 3 is provided with an integrally formed plywood 301. The bottom of the electrostatic diaphragm 4 is provided with a membrane sealing edge 401. The design of the sound hole 201 is to enhance the propagation efficiency of the sound and avoid the sound generated by the vibration of the electrostatic diaphragm 4 from being obstructed.

[0029] A support hoop 104 is provided on the inner side of the dustproof sealing ring 101, and the support hoop 104 is connected to the speaker housing 1 through a slot, wherein the outer sound board 2 is located above the support hoop 104, and the electrostatic diaphragm 4 is attached to the inner side of the support hoop 104. A buffer capsule 5 is provided below the inner sound board 3, and a support ring 501 is provided on the outer bottom of the buffer capsule 5. When the electrostatic diaphragm 4 vibrates and makes a sound, the sound will be transmitted in two directions at the same time, and the sound transmitted to the inside of the speaker can be absorbed by the buffer capsule 5. The inside of the buffer capsule 5 is in a vacuum state. When the buffer capsule 5 vibrates and collides, it will not cause damage to other parts, nor will it generate noise due to collision, thereby ensuring the overall sound effect of the speaker to the greatest extent;

[0030] Two sound-absorbing ring plates 105 are arranged below the support ring 501. The sound-absorbing ring plates 105 are distributed on both sides of the sound source analysis module 6. Ring cavities 1051 are arranged on both sides of the sound-absorbing ring plates 105. A plurality of adjustment springs 1052 are arranged inside the ring cavities 1051. The upper and lower sides of the sound-absorbing ring plates 105 are respectively connected to the speaker housing 1 and the support ring 501 through the adjustment springs 1052. When the buffer capsule 5 vibrates, it will drive the outer support ring 501, and the bottom of the support ring 501 is connected to the sound-absorbing ring plate 105. A plurality of adjustment springs 1052 are arranged between the two. Vibration can be absorbed and weakened by adjusting the springs 1052 and the sound-absorbing ring plate 105, so that when the speaker is placed on a desktop, resonance will not be generated due to playback.

[0031] Both sides of the bottom of the sound source analysis module 6 are provided with a sound source connector 601, and one side of the sound source connector 601 is provided with a conductive paddle 602, wherein the conductive paddle 602 is electrically connected to the sound source analysis module 6 through the sound source connector 601, and one end of the conductive paddle 602 is attached to the electrostatic diaphragm 4, and the conductive paddle 602 can transmit an electrical signal to the electrostatic diaphragm 4, so that the electrostatic diaphragm 4 generates vibration;

[0032] The inner surface of the support hoop 104 is provided with a plurality of support pulleys 1041, the support pulleys 1041 are rotatably connected with the support hoop 104, an electrically controlled reel 106 is provided below the conductive paddle 602, a rotating support 1063 is provided at the bottom of the electrically controlled reel 106, the support pulleys 1041 are located between the support hoop 104 and the electrostatic diaphragm 4, and the support pulleys 1041 can effectively reduce the friction force on the film during the moving and traction process when the electrostatic diaphragm 4 is in tensioning operation, so as to avoid deformation and damage of the film due to excessive friction;

[0033] A drag hoop 1061 is provided on the outside of the electric control reel 106, and the drag hoop 1061 is connected to the membrane edge seal 401 through a slot, and an integrated threading edge seal 1062 is provided at the bottom of the drag hoop 1061, and an elastic pull cord is provided inside the threading edge seal 1062, wherein the threading edge seal 1062 is connected to the electric control reel 106 through the elastic pull cord, and the elastic pull cord can be tightened when the electric control reel 106 rotates, thereby driving the drag hoop 1061 to move downward, and during the movement of the drag hoop 1061, the electrostatic isolation membrane 4 between the outer sound board 2 and the inner sound board 3 will be tensioned, thereby preventing the membrane from becoming soft and deformed under a long-term vibration environment, thereby ensuring the sound effect of the speaker.

[0034] Working principle: the speaker consists of an electrostatic diaphragm 4 and a supporting structure. The film is made of polyethylene material, which has good vibration performance and high-frequency response characteristics. The film is fixed between the inner sound board 3 and the outer sound board 2. Both the outer sound board 2 and the inner sound board 3 are designed to be convex arc structures, which is conducive to the propagation of sound. When the audio signal is transmitted through the circuit of the speaker, the signal will cause the film to vibrate. This vibration will propagate along the entire film area and produce a sound effect similar to that of a circular diaphragm speaker.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A thin and light speaker unit, characterized in that: The speaker comprises a loudspeaker housing (1), an outer sound board (2) is arranged above the loudspeaker housing (1), a dustproof sealing ring (101) is arranged between the outer sound board (2) and the loudspeaker housing (1), wherein the dustproof sealing ring (101) is bonded to the outer sound board (2) and the loudspeaker housing (1), an inner sound board (3) is arranged below the outer sound board (2), an electrostatic diaphragm (4) is arranged between the inner sound board (3) and the outer sound board (2), wherein the electrostatic diaphragm (4) is bonded to the outer sound board (2) and the inner sound board (3).

2. A thin and light speaker unit according to claim 1, characterized in that: An inner sound cavity (103) is arranged inside the loudspeaker housing (1), an insulating card seat (1031) is arranged inside the inner sound cavity (103), the insulating card seat (1031) and the loudspeaker housing (1) are arranged as an integrated structure, and a sound source analysis module (6) is arranged inside the insulating card seat (1031).

3. A thin and light speaker unit according to claim 2, characterized in that: A wiring back plate (102) is arranged below the sound source analysis module (6), and the wiring back plate (102) is electrically connected to the sound source analysis module (6); the outer surfaces of the outer sound board (2) and the inner sound board (3) are both provided with sound holes (201); the bottom of the inner sound board (3) is provided with an integrally formed plywood (301); and the bottom of the electrostatic diaphragm (4) is provided with a membrane sealing edge (401).

4. A thin and light speaker unit according to claim 3, characterized in that: A support hoop (104) is arranged on the inner side of the dustproof sealing ring (101), and the support hoop (104) is connected to the speaker housing (1) via a slot, wherein the outer sound board (2) is located above the support hoop (104), the electrostatic diaphragm (4) is attached to the inner side of the support hoop (104), and a buffer capsule (5) is arranged below the inner sound board (3), and a support ring (501) is arranged on the outer bottom of the buffer capsule (5).

5. A thin and light speaker unit according to claim 4, characterized in that: Two sound-absorbing ring plates (105) are arranged below the support ring (501), and the sound-absorbing ring plates (105) are distributed on both sides of the sound source analysis module (6). Both side surfaces of the sound-absorbing ring plates (105) are provided with ring cavities (1051), and a plurality of adjustment springs (1052) are arranged inside the ring cavities (1051). The upper and lower sides of the sound-absorbing ring plates (105) are respectively connected to the speaker housing (1) and the support ring (501) through the adjustment springs (1052).

6. The thin and light speaker unit according to claim 4, characterized in that: Both sides of the bottom of the sound source analysis module (6) are provided with sound source connectors (601), and one side of the sound source connector (601) is provided with a conductive pick (602), wherein the conductive pick (602) is electrically connected to the sound source analysis module (6) through the sound source connector (601), and one end of the conductive pick (602) is in contact with the electrostatic diaphragm (4).

7. The thin and light speaker unit according to claim 6, characterized in that: The inner surface of the support hoop (104) is provided with a plurality of support pulleys (1041), the support pulleys (1041) are rotatably connected to the support hoop (104), an electric-controlled reel (106) is provided below the conductive paddle (602), and a rotating support (1063) is provided at the bottom of the electric-controlled reel (106).

8. The thin and light speaker unit according to claim 7, characterized in that: A drag hoop (1061) is arranged on the outer side of the electrically controlled reel (106), and the drag hoop (1061) is connected to the membrane edge seal (401) via a slot, and an integrated threading edge seal (1062) is arranged at the bottom of the drag hoop (1061), and an elastic pull cord is arranged inside the threading edge seal (1062), wherein the threading edge seal (1062) is connected to the electrically controlled reel (106) via the elastic pull cord.

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