CN211656366U - High-sensitivity loudspeaker - Google Patents
High-sensitivity loudspeaker Download PDFInfo
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- CN211656366U CN211656366U CN201922175198.8U CN201922175198U CN211656366U CN 211656366 U CN211656366 U CN 211656366U CN 201922175198 U CN201922175198 U CN 201922175198U CN 211656366 U CN211656366 U CN 211656366U
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- vibrating diaphragm
- diaphragm
- suspension edge
- loudspeaker
- magnetic circuit
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- 230000035945 sensitivity Effects 0.000 claims abstract description 12
- 239000000725 suspension Substances 0.000 claims description 24
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004584 weight gain Effects 0.000 description 1
- 235000019786 weight gain Nutrition 0.000 description 1
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Abstract
The utility model discloses a high sensitivity speaker, including vibration system, magnetic circuit and support, its characterized in that: on same set of magnetic circuit and support, be provided with more than one set of vibration system to increase speaker vibration area and be no less than 60%, sensitivity promotes 3dB at least.
Description
Technical Field
The present invention relates to the field of electroacoustic transducers, and in particular to loudspeakers capable of increased sensitivity in a limited size.
Background
The operation principle of the conventional moving coil speaker is shown in fig. 1. Comprises a magnetic circuit system, a vibration system and a bracket.
The magnetic circuit system is composed of a T iron 71, a magnet 61 and a washer 51, and forms a magnetic gap 91.
The vibration system includes: the voice coil 31 is placed in the magnetic gap 91, and when current flows through the voice coil 31, the voice coil vibrates under the action of the magnetic field and drives the diaphragm 11 to vibrate and sound, the suspension edge 21 and the elastic wave 41 provide supporting force for the voice coil 31 and the diaphragm 11, and the dust cover 21 mainly functions to prevent flying dust from entering the magnetic gap 91.
The damper 41 and the suspension edge 21 are fixed to the bracket 81.
With the increase of portability of smart devices, speakers are required to be smaller and higher in performance. Conventional loudspeakers have been difficult to meet. A need for developers is to improve the output sensitivity of a speaker while minimizing the size.
Disclosure of Invention
To solve the above-described technical problems, it is an object of the present invention to provide a speaker capable of improving sensitivity under a specific size condition.
The technical scheme adopted by the invention is as follows:
a high sensitivity speaker, includes magnetic circuit, vibration system and support, its characterized in that: an inner magnetic gap and an outer magnetic gap are arranged in the same set of magnetic circuit system, and two independent voice coils are respectively arranged, wherein the voice coil with smaller size is connected with a vibrating diaphragm and an elastic wave which are arranged on the front face of the loudspeaker, the vibrating diaphragm is connected with a suspension edge, and the suspension edge and the elastic wave are fixed on a bracket; the voice coil with larger size is connected with a second vibrating diaphragm arranged on the back of the loudspeaker, the second vibrating diaphragm is connected with a second suspension edge, and the second suspension edge is fixed on the support; and the sound emitted by the second diaphragm is transmitted to the front surface of the loudspeaker through a hole in the center of the magnetic circuit system.
Another technical scheme of the invention is as follows:
a high sensitivity speaker, includes magnetic circuit, vibration system and support, its characterized in that: the voice coil is connected with the first vibrating diaphragm and the second vibrating diaphragm, the first vibrating diaphragm is connected with the first suspension edge, the second vibrating diaphragm is connected with the second suspension edge, and the first suspension edge and the second suspension edge are respectively fixed on the support; two baffle plates are arranged between the first vibrating diaphragm and the second vibrating diaphragm, the first baffle plate divides the space between the first vibrating diaphragm and the second vibrating diaphragm into two parts, and the second baffle plate and the first baffle plate form a channel; the space between the first diaphragm and the first baffle is communicated with the space on the back of the loudspeaker through the channel; and the space between the second diaphragm and the first baffle is communicated with the space on the front side of the loudspeaker through a channel.
The invention has the beneficial effects that: the sensitivity of the loudspeaker with the same caliber is improved by not less than 3 dB.
Drawings
The following further describes embodiments of the present invention with reference to the drawings.
Fig. 1 is a schematic view of a conventional speaker structure.
Fig. 2 is a schematic diagram of a high-sensitivity speaker according to an embodiment of the present invention.
Fig. 3 and 4 are schematic structural diagrams of two other embodiments of the high-sensitivity speaker of the invention.
Detailed Description
The conception, structure and technical effects of the present invention will be fully described with reference to the accompanying drawings. The described embodiments are only a part of the embodiments of the present invention, and other embodiments obtained by those skilled in the art without inventive efforts belong to the scope of the present invention.
As shown in fig. 2, a high sensitivity speaker, a magnetic circuit system, a vibration system and a bracket.
Wherein the magnetic circuit system is composed of a T iron 71, a magnet 61 and a U cup 52, and forms two magnetic gaps 91 and 92. Wherein the magnetic gap 91 is located in the center of the magnet 61 and the magnetic gap 92 is located outside the magnet 61.
The vibration system 1 includes a diaphragm 11, a suspension 21, a voice coil 31, and a damper 41. The voice coil 31 is located in the magnetic gap 91, and when the voice coil 31 is conductive, it vibrates under the action of the magnetic force, and drives the diaphragm 11 to vibrate and produce sound. The hanging edge 21 and the damper 41 are fixed on the bracket 81 to provide a supporting force.
The vibration system 2 includes a diaphragm 13, a suspension 22, and a voice coil 32. The voice coil 32 is located in the magnetic gap 92, and when the voice coil 32 is electrically conductive, the voice coil is vibrated by the magnetic field force to drive the diaphragm 13 to vibrate and generate sound, and the sound wave is transmitted to the air in the front of the speaker through the hole 93 in the center of the T-iron 71. The hanging edge 22 is secured to the bracket 82 to provide a supporting force.
Compared with a conventional loudspeaker (such as fig. 1), the two diaphragms 11 and 13 with almost the same area work simultaneously, and the radiated sound wave energy is close to 2 times that of the conventional loudspeaker. But the outer diameter of the speaker remains the same and the same set of magnetic circuits is shared, so the total weight gain does not exceed 20%.
Fig. 3 is a variation of the embodiment of fig. 2, except that the suspension edge is eliminated, and an elastic wave 42 is disposed inside the diaphragm 13, and the elastic wave 42 is fixed to a T-bar 71.
Fig. 4 is a schematic structural diagram of another embodiment of the high-sensitivity speaker of the present invention. Comprises a magnetic circuit system, a vibration system and a bracket.
The magnetic circuit system is composed of washer 51, magnet 61 and T-iron 71.
The vibration system 1 includes a voice coil 31, a diaphragm 11, a dust cover 12, and a suspension edge 21, and in order to save space, the suspension edge 21 is disposed below the diaphragm 11 and fixed to a baffle 82. The vibration system 2 includes a voice coil 31, a diaphragm 14, and a suspension 22. Unlike the embodiment of fig. 2, both sets of vibration systems of this embodiment are driven by the voice coil 31.
The support system comprises a bracket 81 and two baffles 82 and 83. The first baffle 83 divides the space between the diaphragm 11 and the diaphragm 14 into two parts 93 and 95, and the second baffle 82 and the first baffle 83 combine to form a channel 94. The space 95 communicates with the space on the front side of the loudspeaker via a channel 96, and the space 93 communicates with the space on the back side of the loudspeaker via a channel 94.
When the voice coil 31 vibrates, the diaphragm 11 and the diaphragm 14 are driven to vibrate at the same time. The sound waves on the front side of the diaphragm 14 propagate through the channel 96 on the front side of the speaker and are superimposed with the sound waves on the front side of the diaphragm 11, and the sound waves on the back side of the diaphragm 11 propagate through the channel 94 on the back side of the speaker and are superimposed with the sound waves on the back side of the diaphragm 14.
Claims (3)
1. A high sensitivity speaker, includes magnetic circuit, vibration system and support, its characterized in that: an inner magnetic gap and an outer magnetic gap are arranged in the same set of magnetic circuit system, and two independent voice coils are respectively arranged, wherein the voice coil with smaller size is connected with a vibrating diaphragm and an elastic wave which are arranged on the front face of the loudspeaker, the vibrating diaphragm is connected with a suspension edge, and the suspension edge and the elastic wave are fixed on a bracket; the voice coil with larger size is connected with a second vibrating diaphragm arranged on the back of the loudspeaker, the second vibrating diaphragm is connected with a second suspension edge, and the second suspension edge is fixed on the support; and the sound emitted by the second diaphragm is transmitted to the front surface of the loudspeaker through a hole in the center of the magnetic circuit system.
2. The high sensitivity speaker of claim 1, wherein: and a second elastic wave is arranged in the second vibrating diaphragm, and the second elastic wave is fixed on the T iron of the magnetic circuit system and provides a supporting force for the second vibrating diaphragm.
3. A high sensitivity speaker, includes magnetic circuit, vibration system and support, its characterized in that: the voice coil is connected with the first vibrating diaphragm and the second vibrating diaphragm, the first vibrating diaphragm is connected with the first suspension edge, the second vibrating diaphragm is connected with the second suspension edge, and the first suspension edge and the second suspension edge are respectively fixed on the support; two baffle plates are arranged between the first vibrating diaphragm and the second vibrating diaphragm, the first baffle plate divides the space between the first vibrating diaphragm and the second vibrating diaphragm into two parts, and the second baffle plate and the first baffle plate form a channel; the space between the first diaphragm and the first baffle is communicated with the space on the back of the loudspeaker through the channel; and the space between the second diaphragm and the first baffle is communicated with the space on the front side of the loudspeaker through a channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922175198.8U CN211656366U (en) | 2019-12-08 | 2019-12-08 | High-sensitivity loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922175198.8U CN211656366U (en) | 2019-12-08 | 2019-12-08 | High-sensitivity loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211656366U true CN211656366U (en) | 2020-10-09 |
Family
ID=72694926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922175198.8U Active CN211656366U (en) | 2019-12-08 | 2019-12-08 | High-sensitivity loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211656366U (en) |
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2019
- 2019-12-08 CN CN201922175198.8U patent/CN211656366U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211102 Address after: 518000 226A, Huitong building, No. 10, Longgang Road, Pingnan community, Longgang street, Longgang District, Shenzhen, Guangdong Patentee after: Shenzhen Longwei Technology Co.,Ltd. Address before: 528437 room 602, block A9, yahuju, Kaiyin new town, Torch Development Zone, Zhongshan City, Guangdong Province Patentee before: Wang Yongming |