CN108419185B - Adopt memory alloy line drive vibrating diaphragm to adjust gas throttling arrangement of flow - Google Patents
Adopt memory alloy line drive vibrating diaphragm to adjust gas throttling arrangement of flow Download PDFInfo
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- CN108419185B CN108419185B CN201810294837.XA CN201810294837A CN108419185B CN 108419185 B CN108419185 B CN 108419185B CN 201810294837 A CN201810294837 A CN 201810294837A CN 108419185 B CN108419185 B CN 108419185B
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- vibrating diaphragm
- memory alloy
- upper cover
- outer upper
- alloy wire
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
Abstract
An air throttling device adopting a memory alloy wire to drive a vibrating diaphragm to regulate flow comprises an outer upper cover, a lower bottom cover, a vibrating diaphragm assembly, the memory alloy wire, a PCB and a throttling net cloth; the PCB is arranged on the outer side of the lower bottom cover, and the throttling net cloth is arranged on the lower bottom cover; the outer upper cover is covered on the lower bottom cover and is enclosed to form a containing space, and the middle part of the outer upper cover is provided with an air hole penetrating up and down; the vibrating diaphragm assembly is arranged in the accommodating space, and the top end of the vibrating diaphragm assembly is blocked on the air hole from the inner side; the memory alloy wires are respectively connected to the PCB and the vibrating diaphragm assembly, and different voltages or signals are given to the memory alloy wires according to requirements, so that the memory alloy wires shrink to different degrees and drive the vibrating diaphragm assembly to move downwards, different gaps are generated between the vibrating diaphragm assembly and the outer upper cover, and active control of air flow can be realized. The invention has strong practicability and has stronger popularization significance.
Description
Technical Field
The invention relates to a gas throttling device, in particular to a gas throttling device for adjusting flow by adopting a memory alloy wire to drive a vibrating diaphragm.
Background
A loudspeaker, also called a "loudspeaker", is a very commonly used electroacoustic transducer element, which is commonly used in sound-producing electronic and electrical equipment. The driving principle of the loudspeaker is that the voice coil and the magnet are mutually induced and drive the vibrating diaphragm to push air to make sound, the cavity structure of the traditional sounding electronic and electric equipment is of a completely closed design except a sound outlet, and the vibration of the vibrating diaphragm can increase the pressure inside the sounding electronic and electric equipment at the same time, so that the vibration of the loudspeaker can be hindered. In order to improve the problems, most of the existing sounding electronic and electric devices are provided with ventilation holes, and the ventilation holes enable air in the sounding device to circulate with external air, so that pressure accumulation can be prevented, a loudspeaker in the sounding device can move more freely, and better tone quality and heavy bass effect can be created.
However, the inner sides of the air holes on the existing sounding equipment are provided with adjusting films, so that the air permeability of the air holes is poor, and the air flow cannot be actively controlled; the different ventilation amounts of the ventilation holes can cause unbalanced internal and external air pressure of the loudspeaker, and further cause asymmetric amplitude of the vibrating diaphragm, so that the tone quality of the loudspeaker is poor.
Disclosure of Invention
Therefore, the invention aims to provide an air throttling device for adjusting the flow by driving a vibrating diaphragm through a memory alloy wire, so as to solve the problem that the current air flow of sound-producing electronic and electric equipment cannot be actively controlled.
In order to achieve the above purpose, the invention mainly adopts the following technical scheme:
an air throttling device adopting a memory alloy wire to drive a vibrating diaphragm to regulate flow comprises an outer upper cover, a lower bottom cover, a vibrating diaphragm assembly, the memory alloy wire, a PCB and a throttling net cloth; the PCB is arranged on the outer side surface of the lower bottom cover, and the throttling screen cloth is arranged on the lower bottom cover; the middle part of the outer upper cover is provided with an air hole penetrating up and down, the outer upper cover is covered on the lower bottom cover and is enclosed with the lower bottom cover to form a containing space, and the vibrating diaphragm assembly is arranged in the containing space; the vibrating diaphragm assembly comprises a sealing vibrating diaphragm, a supporting vibrating diaphragm and an elastic vibrating diaphragm, wherein the peripheral edge of the elastic vibrating diaphragm is clamped between the outer upper cover and the lower bottom cover, the supporting vibrating diaphragm is connected to the elastic vibrating diaphragm, and the sealing vibrating diaphragm is connected to the supporting vibrating diaphragm and is blocked in the air hole; the elastic vibrating diaphragm is provided with a through hole, and the supporting vibrating diaphragm is provided with an accommodating hole coaxial with the through hole; one end of the memory alloy wire is connected to the PCB, and the other end of the memory alloy wire sequentially passes through the through hole on the elastic vibrating diaphragm and the accommodating hole on the supporting vibrating diaphragm and is finally connected to the sealing vibrating diaphragm;
when the vibrating diaphragm assembly works, different voltages or signals are given to the memory alloy wire according to requirements, and the memory alloy wire generates different contraction amplitudes and drives the vibrating diaphragm assembly to move downwards after receiving the signals; the vibrating diaphragm assembly drives the sealing vibrating diaphragm to move downwards, and a gap is formed between the sealing vibrating diaphragm and the outer upper cover.
Further, a boss is arranged in the middle of the top end of the outer upper cover, and the air hole is arranged in the middle of the boss.
Further, the bottom end of the outer upper cover is provided with a bottom edge which is horizontally extended; and a top edge is arranged at the position of the lower bottom cover corresponding to the bottom edge of the outer upper cover.
Further, the sealing vibrating diaphragm comprises a central part and a limiting part arranged on the peripheral edge of the central part, and the central part is sealed on the air hole of the boss.
Further, the supporting vibrating diaphragm comprises a protruding part and a border part arranged at the outer periphery of the protruding part, and the border part is fixedly connected with the limit part of the sealing vibrating diaphragm; the accommodating hole is arranged in the middle of the protruding part.
Further, the elastic vibrating diaphragm comprises a main body part and a positioning edge arranged at the peripheral edge of the main body part, and the positioning edge at the outer side of the elastic vibrating diaphragm is clamped between the bottom edge of the outer upper cover and the top edge of the lower bottom cover.
Further, the middle part of the elastic vibrating diaphragm main body part is provided with a fitting part, and the fitting part is fitted with the bottom end of the middle part of the protruding part for supporting the vibrating diaphragm; the through hole is arranged on the attaching part.
Further, limiting blocks are arranged at the upper ends of the two side walls of the clamping groove in opposite directions in an extending mode, and the nuts are connected to the screw rod at the top end of the mounting plate and the screw rod at the bottom end of the limiting block in a threaded mode.
In summary, according to the invention, the memory alloy wire, the vibrating diaphragm assembly and the outer upper cover are arranged, the outer upper cover is provided with the air hole, the sealing vibrating diaphragm in the vibrating diaphragm assembly is blocked in the air hole, one end of the memory alloy wire is fixedly connected with the sealing vibrating diaphragm, and the other end of the memory alloy wire is connected with the PCB sheet; according to the requirements, different voltages or signals are given, so that the memory alloy wires shrink to different degrees and drive the diaphragm assembly to move downwards, correspondingly, the sealing diaphragm also moves downwards, and gaps with different degrees are generated due to movement of the sealing diaphragm and the outer upper cover due to movement of the diaphragm combination, and further active control of air flow can be realized.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a gas throttling device for adjusting flow using a memory alloy wire to drive a diaphragm.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent.
As shown in fig. 1, the present invention provides an air throttle device for adjusting flow rate by driving a diaphragm with a memory alloy wire, which can be applied to air volume control of vehicle-mounted products, ventilation adjustment of speakers, air flow adjustment of speaker sound outlet holes of portable electronic products, etc.
The air throttling device for adjusting the flow by driving the vibrating diaphragm through the memory alloy wires comprises an outer upper cover 10, a lower bottom cover 20, a vibrating diaphragm assembly, the memory alloy wires 60, a PCB (printed circuit board) 70 and a throttling mesh 80. The outer upper cover 10 is covered on the lower bottom cover 20 and encloses with the lower bottom cover 20 to form a containing space, the diaphragm assembly is installed in the containing space, and the diaphragm assembly includes a sealing diaphragm 30, a supporting diaphragm 40 and an elastic diaphragm 50. The throttle screen cloth is installed on the lower bottom cover 20, and the memory alloy wires are connected to the PCB board and the sealing vibrating diaphragm 30.
The outer upper cover 10 and the lower bottom cover 20 are disposed opposite to each other up and down, and the outer upper cover 10 covers the lower bottom cover 20 and positions the elastic diaphragm 50. The middle part of the top end of the outer upper cover 10 is provided with a boss 11 in the shape of a truncated cone, and the middle part of the boss 11 is provided with an air hole 12 penetrating through the boss 11 up and down. The bottom of the outer upper cover 10 is provided with a bottom edge 13, and the bottom edge 13 is horizontally extended. The lower bottom cover 20 is provided with a top edge 21 corresponding to the position of the outer upper cover bottom edge 13 of the outer upper cover 10. The lower bottom cover 20 is further provided with a plurality of mounting holes (not shown) penetrating up and down, wherein the mounting holes comprise a central hole and side holes. The throttle screen 80 is installed in the installation hole. The PCB board 70 is disposed on the outer side of the lower bottom cover 20 and is disposed opposite to the central hole of the lower bottom cover 20.
The sealing diaphragm 30 includes a central portion 31 and a limiting portion 31 disposed on the peripheral edge of the central portion (not shown), the central portion is completely blocked on the air hole 12 of the boss 11, and the top surface of the limiting portion 31 is attached to the inner side surface of the boss 11 of the outer upper cover 10. Because the boss 11 is in the shape of a truncated cone with a small upper part and a large lower part, the side wall of the boss 11 can well limit the sealing vibrating diaphragm 30, so that the sealing vibrating diaphragm 30 is stably arranged in the outer upper cover 10.
The supporting diaphragm 40 includes a protruding portion 41 and a rim portion 42 disposed at an outer periphery of the protruding portion 41, and the rim portion 42 is fixedly connected with the limiting portion 32 of the sealing diaphragm 30. The protruding portion 42 is arranged in a sphere shape, and the protruding portion 42 protrudes toward the elastic diaphragm 50. In addition, the supporting diaphragm 40 is further provided with a receiving hole 43 for passing through the memory alloy wire, and the receiving hole 43 is disposed at the center of the protruding portion 42.
The elastic diaphragm 50 includes a main body 51 and a positioning edge 52 disposed at the peripheral edge of the main body 51, and the positioning edge 52 is clamped between the bottom edge 13 of the outer upper cover 10 and the top edge 21 of the lower bottom cover 20. The middle part of the main body 51 of the elastic diaphragm 50 is provided with a fitting part 53, the fitting part 53 is horizontally arranged, and the fitting part 53 is fitted with the bottom end of the middle part of the protruding part 41 of the supporting diaphragm 40. A through hole (not shown) is arranged in the middle of the attaching portion, and the through hole and the accommodating hole 43 for supporting the diaphragm 40 are coaxially arranged.
The bottom end of the memory alloy wire 60 is connected to the PCB board 70, and the top end of the memory alloy wire 60 sequentially passes through the through hole of the elastic diaphragm 50, the accommodating hole 43 of the supporting diaphragm 40, and finally is connected to the sealing diaphragm 30. When in operation, different voltages or signals are given to the memory alloy wire 60 through the PCB 70 according to the requirements, so that the memory alloy wire 60 generates different contraction amplitudes and drives the diaphragm assembly to move downwards; meanwhile, gaps with different degrees are generated between the sealing diaphragm 30 and the outer upper cover 10 due to movement of the diaphragm assembly, so that the gas flow can be controlled, and the effect of actively and flexibly controlling the flow is achieved.
In summary, according to the invention, the memory alloy wire, the vibrating diaphragm assembly and the outer upper cover are arranged, the outer upper cover is provided with the air hole, the sealing vibrating diaphragm in the vibrating diaphragm assembly is blocked in the air hole, one end of the memory alloy wire is fixedly connected with the sealing vibrating diaphragm, and the other end of the memory alloy wire is connected with the PCB sheet; according to the requirements, different voltages or signals are given, so that the memory alloy wires shrink to different degrees and drive the diaphragm assembly to move downwards, correspondingly, the sealing diaphragm also moves downwards, and gaps with different degrees are generated due to movement of the sealing diaphragm and the outer upper cover due to movement of the diaphragm combination, and further active control of air flow can be realized.
The above description is only one preferred embodiment of the present invention and is not intended to limit the present invention, but any modifications, equivalents, improvements, etc. falling within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (7)
1. Adopt memory alloy line drive vibrating diaphragm to adjust gas throttling arrangement of flow, its characterized in that: comprises an outer upper cover, a lower bottom cover, a vibrating diaphragm assembly, a memory alloy wire, a PCB board and a throttling net cloth; the PCB is arranged on the outer side surface of the lower bottom cover, and the throttling screen cloth is arranged on the lower bottom cover; the middle part of the outer upper cover is provided with an air hole penetrating up and down, the outer upper cover is covered on the lower bottom cover and is enclosed with the lower bottom cover to form a containing space, and the vibrating diaphragm assembly is arranged in the containing space; the vibrating diaphragm assembly comprises a sealing vibrating diaphragm, a supporting vibrating diaphragm and an elastic vibrating diaphragm, wherein the peripheral edge of the elastic vibrating diaphragm is clamped between the outer upper cover and the lower bottom cover, the supporting vibrating diaphragm is connected to the elastic vibrating diaphragm, and the sealing vibrating diaphragm is connected to the supporting vibrating diaphragm and is blocked in the air hole; the elastic vibrating diaphragm is provided with a through hole, and the supporting vibrating diaphragm is provided with an accommodating hole coaxial with the through hole; one end of the memory alloy wire is connected to the PCB, and the other end of the memory alloy wire sequentially passes through the through hole on the elastic vibrating diaphragm and the accommodating hole on the supporting vibrating diaphragm and is finally connected to the sealing vibrating diaphragm;
when the vibrating diaphragm assembly works, different voltages or signals are given to the memory alloy wire through the PCB according to requirements, and the memory alloy wire generates different contraction amplitudes and drives the vibrating diaphragm assembly to move downwards after receiving the signals; the vibrating diaphragm assembly drives the sealing vibrating diaphragm to move downwards, and a gap is formed between the sealing vibrating diaphragm and the outer upper cover.
2. The air throttling device for adjusting flow by driving diaphragm through memory alloy wire as set forth in claim 1, wherein: a boss is arranged in the middle of the top end of the outer upper cover, and the air hole is formed in the middle of the boss.
3. The air throttling device for adjusting flow by driving diaphragm through memory alloy wire as set forth in claim 2, wherein: the sealing vibrating diaphragm comprises a central part and a limiting part arranged on the peripheral edge of the central part, and the central part is sealed on the air hole of the boss.
4. A gas restriction device according to claim 3, wherein said memory alloy wire is used to drive said diaphragm to regulate flow: the support vibrating diaphragm comprises a protruding part and a border part arranged on the outer periphery of the protruding part, and the border part is fixedly connected with the limit part of the sealing vibrating diaphragm; the accommodating hole is arranged in the middle of the protruding part.
5. The air throttling device for adjusting flow by driving diaphragm with memory alloy wire as set forth in claim 4, wherein: the bottom end of the outer upper cover is provided with a bottom edge which is horizontally extended; and a top edge is arranged at the position of the lower bottom cover corresponding to the bottom edge of the outer upper cover.
6. The air throttling set for adjusting flow by driving diaphragm with memory alloy wire as set forth in claim 5, wherein: the elastic vibrating diaphragm comprises a main body part and a positioning edge arranged at the peripheral edge of the main body part, and the positioning edge at the outer side of the elastic vibrating diaphragm is clamped between the bottom edge of the outer upper cover and the top edge of the lower bottom cover.
7. The air throttling set for adjusting flow rate by driving diaphragm with memory alloy wire as set forth in claim 6, wherein: the middle part of the elastic vibrating diaphragm main body part is provided with a fitting part which is fitted with the bottom end of the middle part of the protruding part for supporting the vibrating diaphragm; the through hole is arranged on the attaching part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810294837.XA CN108419185B (en) | 2018-03-30 | 2018-03-30 | Adopt memory alloy line drive vibrating diaphragm to adjust gas throttling arrangement of flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810294837.XA CN108419185B (en) | 2018-03-30 | 2018-03-30 | Adopt memory alloy line drive vibrating diaphragm to adjust gas throttling arrangement of flow |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108419185A CN108419185A (en) | 2018-08-17 |
| CN108419185B true CN108419185B (en) | 2023-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810294837.XA Active CN108419185B (en) | 2018-03-30 | 2018-03-30 | Adopt memory alloy line drive vibrating diaphragm to adjust gas throttling arrangement of flow |
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| CN (1) | CN108419185B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4395597A (en) * | 1979-09-25 | 1983-07-26 | Victor Company Of Japan, Limited | Speaker diaphragm assembly and a method of manufacturing the same |
| JP2007150523A (en) * | 2005-11-25 | 2007-06-14 | Yamaha Corp | Speaker |
| CN103894306A (en) * | 2014-04-09 | 2014-07-02 | 西北工业大学 | Synthetic jet device based on electromagnetic drive |
| CN104053099A (en) * | 2013-03-15 | 2014-09-17 | 阿尔派株式会社 | Loudspeaker unit |
| WO2018040396A1 (en) * | 2016-08-31 | 2018-03-08 | 歌尔股份有限公司 | Moving-coil loudspeaker |
| CN207150822U (en) * | 2017-07-13 | 2018-03-27 | Tcl通力电子（惠州）有限公司 | Loudspeaker |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8974641B2 (en) * | 2011-01-24 | 2015-03-10 | Carefusion 303, Inc. | Self-adjusting preload for memory alloy wire |
| US20130108099A1 (en) * | 2011-10-31 | 2013-05-02 | Jason Kemmerer | Loudspeaker having improved cooling system integrally formed on speaker frame |
-
2018
- 2018-03-30 CN CN201810294837.XA patent/CN108419185B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4395597A (en) * | 1979-09-25 | 1983-07-26 | Victor Company Of Japan, Limited | Speaker diaphragm assembly and a method of manufacturing the same |
| JP2007150523A (en) * | 2005-11-25 | 2007-06-14 | Yamaha Corp | Speaker |
| CN104053099A (en) * | 2013-03-15 | 2014-09-17 | 阿尔派株式会社 | Loudspeaker unit |
| CN103894306A (en) * | 2014-04-09 | 2014-07-02 | 西北工业大学 | Synthetic jet device based on electromagnetic drive |
| WO2018040396A1 (en) * | 2016-08-31 | 2018-03-08 | 歌尔股份有限公司 | Moving-coil loudspeaker |
| CN207150822U (en) * | 2017-07-13 | 2018-03-27 | Tcl通力电子（惠州）有限公司 | Loudspeaker |
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| Publication number | Publication date |
|---|---|
| CN108419185A (en) | 2018-08-17 |
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