A dual external drive push-pull loudspeaker and implementation method thereof

Abstract

The present invention discloses a dual external drive push-pull loudspeaker, comprising a first loudspeaker and a second loudspeaker of identical structure and symmetrical arrangement, the first loudspeaker comprising a bracket, a sound diaphragm provided above the bracket, a voice coil provided in the middle of the sound diaphragm, a basin provided above the sound diaphragm, a washer provided in the middle of the basin, a magnet provided above the washer, and a T-iron provided above the magnet; the present invention also discloses a method for implementing the dual external drive push-pull loudspeaker. The T-iron, magnet and washer in the first and second loudspeakers of the present invention constitute two independent magnetic circuit systems, which increase the driving force of the system and improve the sound pressure; the brackets of the first and second loudspeakers of the present invention are connected by sealing cotton to achieve sealing between the space between the two sound diaphragms and the external space. During operation, the air between the two sound diaphragms does not flow out, thereby enhancing the rigidity of the sound diaphragm body and facilitating the extension of mid- and high-frequency sounds.

Description

Technical Field

[0001] The present invention belongs to the technical field of loudspeakers, and in particular relates to a dual-external-drive push-pull loudspeaker and an implementation method thereof. Background Art

[0002] With the advancement of technology and the increasing popularity of automobiles, people are increasingly concerned about privacy. For example, physical partitions are used to separate the driver's cab from the rear passenger compartment, allowing them to communicate privately. Push-pull speakers are suitable for similar situations. Their co-resonant, dual-sided sound-emitting structure allows both the driver and rear passengers to enjoy the same music.

[0003] The existing push-pull converter has some problems in actual use, such as:

[0004] 1. Driven by only a single magnetic circuit, the driving force is small and the noise is small;

[0005] 2. It has a spring wave, but the spring wave does not participate in the radiation of sound energy;

[0006] 3. In actual use, in order to avoid acoustic short circuit, the air pushed by the back of the audio is generally sacrificed and unused, resulting in low acoustic energy efficiency;

[0007] 4. The magnetic circuit is generally inside the rear cavity, which is not conducive to heat conduction and the heat power it withstands is relatively low;

[0008] 5. In order to avoid acoustic short circuit, the low-frequency effect is relatively poor due to the limitation of the rear cavity volume;

[0009] 6. When using a single voice coil, the inductance is generally large, the mid- and high-frequency frequencies are affected by the inductance, and the sensitivity is low. Summary of the Invention

[0010] The purpose of the present invention is to provide a dual external drive push-pull speaker to solve the problems raised in the above background technology. The dual external drive push-pull speaker provided by the present invention has the characteristics of increasing the driving force of the system, improving the sound pressure and high sound energy utilization rate.

[0011] Another object of the present invention is to provide a method for implementing a dual external drive push-pull loudspeaker.

[0012] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a dual external drive push-pull speaker, comprising a first speaker and a second speaker having the same structure and being symmetrically arranged, the first speaker comprising a bracket, a sound diaphragm being provided above the bracket, a voice coil being provided in the middle of the sound diaphragm, a basin being provided above the sound diaphragm, a washer being provided in the middle of the basin, a magnet being provided above the washer, and a T iron being provided above the magnet.

[0013] In order to achieve the sealing of the space between the two sound diaphragms and the external space, the air between the two sound diaphragms does not flow out during operation, thereby enhancing the rigidity of the sound diaphragm body and facilitating the extension of mid- and high-frequency sounds. Furthermore, the brackets of the first speaker and the second speaker are connected by sealing cotton.

[0014] In order to isolate the outer side and inner side of the two sound membranes and connect the two voice coils into one body to achieve synchronous driving of the two voice coils, a voice coil cap is further connected to the end of the voice coil.

[0015] In order to facilitate the sound membrane to push the air flow and radiate the sound, a number of hollow holes are further provided on the basin frame.

[0016] In order to prevent dust without affecting the sound, and at the same time to make the appearance exposed, a dust-proof net is further provided on the basin frame.

[0017] In order to facilitate air radiation in the voice coil cap area and serve as a process hole for pressure-maintaining bonding during production and assembly, a through hole is further provided at the center of the T-iron.

[0018] In order to reduce the system inductance and improve the mid- and high-frequency sensitivity, the voice coils of the first speaker and the second speaker are further connected in parallel.

[0019] Furthermore, foam is provided above the basin frame.

[0020] In order to facilitate the pasting of the sealing cotton, an embedding groove is further provided on the bracket.

[0021] In order to achieve a close fit between the two brackets, a semicircular groove is further provided on the edge of the embedding groove, and a semicircular convex ring is provided on one side of the semicircular groove.

[0022] In order to facilitate quick positioning of the two brackets when connected, two positioning holes are further provided inside the groove, and two positioning pins are provided on the convex ring.

[0023] Furthermore, in the present invention, the method for implementing a dual external drive push-pull speaker comprises the following steps:

[0024] (1) The T-iron, magnet and washer in the first and second speakers form two independent magnetic circuit systems, which increases the driving force of the system and improves the sound pressure;

[0025] (2) The sound diaphragms in the first speaker and the second speaker form a double sound diaphragm structure, the sound diaphragms are mutually elastic waves, and both elastic waves participate in radiating sound energy;

[0026] (3) The voice coils in the first speaker and the second speaker are connected by a voice coil cap, which not only isolates the outer side and the inner side of the two sound membranes, but also connects the two voice coils into one, thereby achieving synchronous driving of the two voice coils;

[0027] (4) The basin frame is provided with a number of hollow holes to facilitate the sound membrane to push the air flow and radiate the sound. At the same time, the basin frame is provided with a dustproof net to prevent dust without affecting the sound.

[0028] (5) The two diaphragms are sealed. When working, the air between the two diaphragms does not flow out, which enhances the rigidity of the diaphragm body and is conducive to the extension of mid- and high-frequency sounds.

[0029] (6) The two independent magnetic circuit systems are exposed, which is beneficial to the heat dissipation of the voice coil and the magnetic circuit system and can withstand higher thermal power.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. The T-iron, magnet and washer in the first and second speakers of the present invention form two independent magnetic circuit systems, which increases the driving force of the system and improves the sound pressure;

[0032] 2. The brackets of the first and second speakers of the present invention are connected by sealing cotton to achieve the sealing between the space between the two sound membranes and the external space. When working, the air between the two sound membranes does not flow out, which enhances the rigidity of the sound membrane body and is conducive to the extension of mid- and high-frequency sounds.

[0033] 3. The voice coils in the first and second speakers of the present invention are connected by a voice coil cap, which not only isolates the outer and inner sides of the two sound membranes, but also connects the two voice coils into one, thereby achieving synchronous driving of the two voice coils;

[0034] 4. The basin frame of the present invention is provided with a plurality of hollow holes and a dustproof net. The hollow holes facilitate the sound membrane to push the air flow and radiate the sound. The dustproof net can prevent dust without affecting the sound. At the same time, the dustproof net can also be exposed as an appearance.

[0035] 5. A through hole is provided at the center of the T-iron of the present invention, which not only facilitates air radiation in the voice coil cap area, but also serves as a process hole for pressure-maintaining bonding during production and assembly.

[0036] 6. The voice coils of the first and second speakers of the present invention are connected in parallel to reduce the system inductance and improve the sensitivity of mid- and high-frequency frequencies;

[0037] 7. The sound diaphragms in the first and second speakers of the present invention form a dual-diaphragm structure, with the diaphragms acting as elastic waves to each other, and both elastic waves participate in radiating sound energy;

[0038] 8. Both sound diaphragms of the present invention can radiate sound energy to the outside and emit sound, with high sound energy utilization rate;

[0039] 9. The outer surfaces of the two diaphragms of the present invention form a back cavity with the external space, which has a naturally larger back cavity and can achieve relatively good low-frequency effects;

[0040] 10. The two independent magnetic circuit systems of the present invention are exposed, which is beneficial to the heat dissipation of the voice coil and the magnetic circuit system and can withstand higher thermal power. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the explosion of the structure of the present invention;

[0042] Figure 2 This is a schematic exploded view of the structure of the first speaker of the present invention;

[0043] Figure 3 It is a schematic cross-sectional view of the present invention;

[0044] Figure 4 It is a structural schematic diagram of the basin stand of the present invention;

[0045] Figure 5 Schematic diagram of the structure of the T iron of the present invention;

[0046] Figure 6 Schematic diagram of the structure of the bracket of the present invention;

[0047] In the figure: 1. Sealing cotton; 2. First speaker; 3. Second speaker; 4. Bracket; 41. Embedded slot; 42. Groove; 43. Positioning hole; 44. Raised ring; 45. Positioning pin; 5. Voice coil cap; 6. Basin frame; 61. Hollow hole; 7. Washer; 8. T iron; 81. Through hole; 9. Foam; 10. Magnet; 11. Dust net; 12. Sound membrane; 13. Voice coil. DETAILED DESCRIPTION

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0049] Example 1

[0050] See also Figure 1-6The present invention provides the following technical solution: a dual external drive push-pull speaker, comprising a first speaker 2 and a second speaker 3 with the same structure and symmetrically arranged, the first speaker 2 comprising a bracket 4, the bracket 4 being made of plastic, a sound diaphragm 12 being provided above the bracket 4, a voice coil 13 being provided in the middle of the sound diaphragm 12, a basin frame 6 being provided above the sound diaphragm 12, the basin frame 6 being made of iron, a washer 7 being provided in the middle of the basin frame 6, a magnet 10 being provided above the washer 7, and a T iron 8 being provided above the magnet 10.

[0051] By adopting the above technical solution, the magnetic steels 10 in the first loudspeaker 2 and the second loudspeaker 3 form two independent magnetic circuit systems, thereby increasing the driving force of the system and improving the sound pressure.

[0052] Specifically, the first speaker 2 and the bracket 4 of the second speaker 3 are connected via the sealing cotton 1 .

[0053] By adopting the above technical solution, the space between the two sound membranes 12 and the external space is sealed. When working, the air between the two sound membranes 12 does not flow out, which enhances the rigidity of the sound membrane body and is beneficial to the extension of mid- and high-frequency.

[0054] Example 2

[0055] The difference between this embodiment and the first embodiment is that, specifically, a voice coil cap 5 is connected to the end of the voice coil 13 .

[0056] By adopting the above technical solution, the voice coils 13 in the first speaker 2 and the second speaker 3 are connected through the voice coil cap 5, which not only isolates the outer side surface and the inner side surface of the two sound membranes 12, but also connects the two voice coils 13 into one, thereby realizing synchronous driving of the two voice coils 13.

[0057] Example 3

[0058] The difference between this embodiment and the first embodiment is that: specifically, a plurality of hollow holes 61 are provided on the basin frame 6 , and a dustproof net 11 is provided on the basin frame 6 .

[0059] By adopting the above technical solution, the hollow hole 61 facilitates the sound membrane 12 to push the air flow and radiate the sound. At the same time, a dustproof net 11 is provided on the basin frame 6, which can prevent dust without affecting the sound. At the same time, the dustproof net 11 can also be exposed as an appearance.

[0060] Example 4

[0061] The difference between this embodiment and the first embodiment is that: specifically, a through hole 81 is provided at the center of the T iron 8 .

[0062] By adopting the above technical solution, the air radiation in the voice coil cap 5 area is facilitated, and the voice coil cap 5 area can be used as a process hole for pressure-maintaining bonding during production and assembly.

[0063] Example 5

[0064] This embodiment differs from the first embodiment in that: specifically, the voice coils 13 of the first loudspeaker 2 and the second loudspeaker 3 are connected in parallel.

[0065] By adopting the above technical solutions, the system inductance is reduced and the mid- and high-frequency sensitivity is improved.

[0066] Example 6

[0067] The difference between this embodiment and the first embodiment is that, specifically, foam 9 is provided above the basin frame 6 .

[0068] By adopting the above technical solution, when the speaker is assembled with the whole machine, it can be sealed by the foam 9 to prevent sound leakage.

[0069] Example 7

[0070] The present embodiment differs from the first embodiment in that: specifically, an embedding groove 41 is provided on the bracket 4 , a semicircular groove 42 is provided on the edge of the embedding groove 41 , and a semicircular convex ring 44 is provided on one side of the semicircular groove 42 .

[0071] By adopting the above technical solution, the embedding groove 41 facilitates the pasting of the sealing cotton 1, and the grooves 42 and the convex rings 44 on the two brackets 4 cooperate with each other to achieve a tight fit between the two brackets 4.

[0072] Specifically, two positioning holes 43 are provided inside the groove 42 , and two positioning pins 45 are provided on the protruding ring 44 .

[0073] By adopting the above technical solution, the two brackets 4 can be quickly positioned when connected.

[0074] Example 8

[0075] Furthermore, the method for implementing a dual external drive push-pull speaker of the present invention comprises the following steps:

[0076] (1) The T-iron 8, magnet 10 and washer 7 in the first speaker 2 and the second speaker 3 form two independent magnetic circuit systems, which increase the driving force of the system and improve the sound pressure;

[0077] (2) The sound diaphragms 12 in the first loudspeaker 2 and the second loudspeaker 3 form a double sound diaphragm structure, and the sound diaphragms are mutually elastic waves, and both elastic waves participate in radiating sound energy;

[0078] (3) The voice coils 13 in the first speaker 2 and the second speaker 3 are connected by the voice coil cap 5, which not only isolates the outer side surface of the two sound membranes 12 from the inner side surface, but also connects the two voice coils 13 into one body, thereby achieving synchronous driving of the two voice coils 13;

[0079] (4) The basin frame 6 is provided with a plurality of hollow holes 61, which facilitate the sound membrane 12 to push the air flow and radiate the sound. At the same time, the basin frame 6 is provided with a dustproof net 11, which can prevent dust without affecting the sound.

[0080] (5) The two sound membranes 12 are sealed. When working, the air between the two sound membranes 12 does not flow out, which enhances the rigidity of the sound membrane body and is beneficial to the extension of medium and high frequencies;

[0081] (6) The two independent magnetic circuit systems are exposed, which is beneficial to the heat dissipation of the voice coil and the magnetic circuit system and can withstand higher thermal power.

[0082] In summary, the T iron 8, magnetic steel 10 and washer 7 in the first speaker 2 and the second speaker 3 of the present invention constitute two independent magnetic circuit systems, which increase the driving force of the system and improve the sound pressure; the first speaker 2 and the second speaker 3 of the present invention are connected by the sealing cotton 1 between the brackets 4 to achieve the sealing of the space between the two sound membranes 12 and the external space. During operation, the air between the two sound membranes 12 does not flow out, thereby enhancing the rigidity of the sound membrane body and facilitating the extension of mid- and high-frequency sounds; the voice coils 13 in the first speaker 2 and the second speaker 3 of the present invention are connected by the voice coil cap 5, which not only isolates the outer side surface of the two sound membranes 12 from the inner side surface, but also connects the two voice coils 13 into one, thereby achieving synchronous driving of the two voice coils 13; a plurality of hollow holes 61 are provided on the basin frame 6 of the present invention, and a dustproof net 11 is provided on the basin frame 6. The hollow holes 61 are convenient for the sound membrane 1 2 promotes air flow and radiates sound. The dustproof net 11 can prevent dust without affecting the sound. At the same time, the dustproof net 11 can also be exposed as an appearance. A through hole 81 is provided at the center of the T iron 8 of the present invention, which is convenient for air radiation in the area of ​​the voice coil cap 5 and can also be used as a process hole for pressure-maintaining and bonding during production and assembly. The voice coils 13 of the first speaker 2 and the second speaker 3 of the present invention are connected in parallel to reduce the system inductance and improve the sensitivity of medium and high frequencies. The sound membranes 12 in the first speaker 2 and the second speaker 3 of the present invention constitute a dual sound membrane structure. The sound membranes are elastic waves to each other, and both elastic waves participate in radiating sound energy. The two sound membranes 12 of the present invention can both radiate sound energy to the outside and emit sound, with a high sound energy utilization rate. The outer side surfaces of the two sound membranes 12 of the present invention form a back cavity with the external space, which has a naturally larger back cavity and can achieve relatively good low-frequency effects.

[0083] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A dual external drive push-pull speaker, characterized by: The invention comprises a first loudspeaker and a second loudspeaker of identical structure and symmetrical arrangement, wherein the first loudspeaker comprises a bracket, a sound diaphragm is provided above the bracket, a voice coil is provided in the middle of the sound diaphragm, a basin is provided above the sound diaphragm, a washer is provided in the middle of the basin, a magnet is provided above the washer, and a T iron is provided above the magnet; The end of the voice coil is connected to a voice coil cap, and the voice coils in the first speaker and the second speaker are connected through the voice coil cap; The brackets of the first speaker and the second speaker are connected via sealing cotton. An embedding groove is provided on the bracket. A semicircular groove is provided on the edge of the embedding groove. A semicircular convex ring is provided on one side of the semicircular groove.

2. The dual external drive push-pull speaker according to claim 1, characterized in that: The basin frame is provided with a plurality of hollow holes and a dustproof net.

3. The dual external drive push-pull speaker according to claim 1, characterized in that: A through hole is provided at the center of the T iron.

4. The dual external drive push-pull speaker according to claim 1, characterized in that: The voice coils of the first speaker and the second speaker are connected in parallel.

5. The dual external drive push-pull speaker according to claim 1, characterized in that: Foam is provided above the basin frame.

6. The dual external drive push-pull speaker according to claim 5, characterized in that: Two positioning holes are provided inside the groove, and two positioning pins are provided on the convex ring.

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