CN110868660A - Airflow deceleration balancing piece and bass receiver - Google Patents
Airflow deceleration balancing piece and bass receiver Download PDFInfo
- Publication number
- CN110868660A CN110868660A CN201911308234.1A CN201911308234A CN110868660A CN 110868660 A CN110868660 A CN 110868660A CN 201911308234 A CN201911308234 A CN 201911308234A CN 110868660 A CN110868660 A CN 110868660A
- Authority
- CN
- China
- Prior art keywords
- airflow
- balancing
- deceleration
- layer
- speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000009467 reduction Effects 0.000 claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 9
- 230000003139 buffering effect Effects 0.000 claims abstract description 3
- 239000010425 asbestos Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 3
- 229910052895 riebeckite Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 229920006335 epoxy glue Polymers 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention provides an airflow deceleration balancing piece and a bass receiver, belonging to the field of receivers, wherein the airflow deceleration balancing piece comprises: the airflow deceleration layer is of a honeycomb structure and is used for absorbing and buffering airflow; and the airflow balancing layer is stacked with the airflow deceleration layer, is of a net structure and is used for balancing the airflow passing through the airflow deceleration layer. The bass receiver comprises a shell, a vibrating diaphragm, a magnetic driving mechanism and three airflow deceleration balancing pieces, wherein the three airflow deceleration balancing pieces are respectively arranged at a sound outlet hole, a low-speed airflow balancing hole and a high-speed airflow balancing hole of the shell. The airflow speed reduction balancing piece can be used for the sound outlet hole and the airflow balancing hole of the telephone receiver, so that the output vibration speed is reduced, the turbulence is reduced, and the low-frequency distortion is reduced.
Description
Technical Field
The invention belongs to the field of telephone receivers, and particularly relates to an airflow deceleration balancing piece.
Background
A receiver is an electroacoustic device that converts an audio electrical signal into an acoustic signal, and is widely used in devices such as mobile phones, fixed phones, hearing aids, and earphones.
The traditional low-frequency armature balanced receiver only performs simple acoustic rear cavity treatment, such as opening holes on the cavity wall, but the opening holes can cause the air flow speed to change suddenly to generate turbulence, so that the low-frequency distortion is greatly increased.
Disclosure of Invention
Based on the above background problem, the present invention is directed to provide an airflow deceleration balancing piece, which can be used for the sound outlet hole and the airflow balancing hole of the receiver, so as to reduce the output vibration velocity, reduce turbulence, and reduce low frequency distortion; it is another object of the present invention to provide a bass receiver including the above airflow deceleration balancing member.
In order to achieve the purpose, the technical scheme of the invention is as follows:
an airflow deceleration balance comprising: the airflow deceleration layer is of a honeycomb structure and is used for absorbing and buffering airflow; and the airflow balancing layer is stacked with the airflow deceleration layer, is of a net structure and is used for balancing the airflow passing through the airflow deceleration layer.
In one embodiment, the airflow speed reduction layer is provided with a plurality of circular through holes, and the axes of the circular through holes are perpendicular to the airflow flowing direction.
Preferably, the material of the airflow deceleration layer is foam or porous asbestos.
Preferably, the thickness of the airflow velocity reduction layer is 0.05-0.2 mm.
In one embodiment, the airflow balancing layer is provided with a plurality of meshes distributed in an array, the meshes are rectangular, and the size of each mesh is 5-20 μm.
Preferably, the gas flow equilibrium layer has a thickness of 0.025 to 0.1 mm.
Preferably, the material of the air flow balance layer is mesh cloth or a wire mesh.
In order to achieve the above object, the present invention further provides a bass receiver, which includes a housing, a diaphragm, a magnetic driving mechanism, and the airflow deceleration balancing component.
In one embodiment, a frame for supporting a diaphragm is arranged in the shell, and the diaphragm is arranged on the frame to divide the shell into a front acoustic air cavity and a rear acoustic air cavity; and the vibrating diaphragm is provided with an end point driving vibrating wing, one end of the end point driving vibrating wing is hinged with the frame, and the other end of the end point driving vibrating wing is connected with a connecting rod of the magnetic driving mechanism to form a driving end.
In one embodiment, a sound outlet hole is formed in the cavity wall of the front acoustic air cavity corresponding to the driving end position of the end point driving vibration wing, and a low-speed air flow balance hole and a high-speed air flow balance hole are formed in the cavity wall of the rear acoustic air cavity; the three airflow deceleration balancing pieces are respectively arranged at the sound outlet hole, the low-speed airflow balancing hole and the high-speed airflow balancing hole.
Compared with the prior art, the invention has the following effects:
1. the airflow speed reduction balancing piece can be used for the sound outlet hole and the airflow balancing hole of the telephone receiver, so that the output vibration speed is reduced, turbulence is reduced, and low-frequency distortion is reduced.
2. The receiver of the invention is provided with the end point driving vibrating wing on the vibrating diaphragm, the end point driving vibrating wing can do rigid motion at 20Hz-80Hz, and the cutting vibration can not be generated, thereby reducing the low-frequency distortion; the sound outlet of the receiver is arranged in the axial direction of the shell in a deviating mode and is used for matching the vibration part of the end point driving vibrating wing to smoothly output sound, air flow cannot be blocked, and low-frequency distortion is reduced.
3. According to the invention, the airflow speed reduction balancing pieces are arranged in the low-speed airflow balancing holes and the high-speed airflow balancing holes, so that the turbulence influence can be eliminated, and the low-frequency distortion is further reduced.
4. The end point driving vibrating wing is hinged with one end of the frame, the other end of the end point driving vibrating wing is a free end, the vibration structure is restrained firmly, and the defect that the vibrating diaphragm starts to generate structural segmented vibration at 20Hz in the traditional telephone receiver adopting the vibrating diaphragm with a hinge-free structure and a midpoint driving mode is overcome.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the prior art and the embodiments will be briefly described below.
FIG. 1 is a schematic view of the structure of an air flow velocity reduction balance device in example 1 of the present invention;
fig. 2 is a top view of a bass receiver in embodiment 2 of the present invention;
fig. 3 is a front sectional view of a bass receiver in embodiment 2 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings of the specification, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Example 1
In order to solve the defect of low-frequency distortion increase in the prior art, the invention provides an airflow deceleration balancing piece, as shown in fig. 1, comprising: the airflow deceleration layer 1 and the airflow balance layer 2.
In the embodiment, as shown in fig. 1, the airflow speed reduction layer 1 is provided with a plurality of circular through holes 101, an arrow direction in fig. 1 is an airflow flowing direction, an axial direction of the circular through holes 101 is perpendicular to the airflow flowing direction, and the airflow can be absorbed and buffered, but the airflow can reach the airflow balance layer 2 through the airflow speed reduction layer 1. The diameter of the circular through hole 101 in this embodiment is not uniform, but is not limited thereto, and in another embodiment, the diameter of the circular through hole 101 may be uniform.
Specifically, the thickness of the airflow speed reduction layer 1 in this embodiment is 0.05-0.2mm, and is preferably set to be 0.1mm, and the material of the airflow speed reduction layer 1 in this embodiment is foam or porous asbestos, but the invention is not limited thereto, and porous sound-absorbing materials can be applied.
Specifically, the size of the mesh 201 is 5 to 20 μm, that is, the size of the mesh 201 is adjustable, and when the airflow deceleration balancing member is used for a low-speed airflow balancing hole, the mesh 201 is set to be larger, and when the airflow deceleration balancing member is used for a high-speed airflow balancing hole, the mesh 201 is set to be smaller. In this embodiment, the material of the airflow balance layer 2 is mesh cloth or silk screen, but is not limited thereto.
The airflow speed reduction balancing piece in the embodiment can reduce the output vibration speed and reduce turbulence, thereby reducing low-frequency distortion.
Example 2
This embodiment provides a bass receiver, as shown in fig. 2 and 3, including a housing 3, a diaphragm 4, a magnetic driving mechanism, and the airflow deceleration balancing member in embodiment 1.
In an embodiment, the housing 3 is cylindrical, as shown in fig. 3, a frame 301 for supporting the diaphragm 4 is disposed in the housing 3, specifically, the frame 301 is an annular structure, that is, the frame 301 is disposed around an inner wall of the housing 3, the diaphragm 4 is disposed on the frame 301 to divide the interior of the housing 3 into a front acoustic air cavity 3-1 and a rear acoustic air cavity 3-2, in fig. 3, that is, an upper space of the diaphragm 4 is the front acoustic air cavity 3-1, and a lower space of the diaphragm 4 is the rear acoustic air cavity 3-2.
The traditional receiver at present adopts a vibrating diaphragm with a hingeless structure, and a stainless steel connecting rod with the diameter of 0.05mm is connected with a magnetic driving mechanism at the middle position of the vibrating diaphragm, such as the structure disclosed in the prior application (CN106550309A) of the applicant, but the vibrating diaphragm can start to generate structural split vibration at 20 Hz. For this purpose, in this embodiment, an end point driving vibrating wing 401 is provided on the diaphragm 4.
As shown in fig. 3, the end point driving wing 401 has a right end hinged to the frame 301 and a left end connected to the magnetic driving mechanism through the link 5 to form a driving end. The embodiment adopts a hinge to realize the hinge joint, and the vibration structure is firmly restrained by bonding through epoxy glue, but the invention is not limited to the embodiment.
In this embodiment, the sound outlet hole 302 is formed in the front acoustic air chamber 3-1, and the position of the sound outlet hole 302 corresponding to the driving end (i.e., the left end) of the end point driving wing 401 is set, taking fig. 3 as an example, the sound outlet hole 302 is formed on the left side of the top of the housing 3, and taking fig. 2 as an example, the sound outlet hole is formed on the left side of the housing 3.
In this embodiment, a low-speed airflow balance hole 303 and a high-speed airflow balance hole 304 are further disposed on the casing 3, specifically, the low-speed airflow balance hole 303 is disposed below the right side wall of the casing 3, and the high-speed airflow balance hole 304 is disposed on the right side of the bottom wall of the casing 3, that is, both the low-speed airflow balance hole 303 and the high-speed airflow balance hole 304 are disposed on the rear acoustic air chamber 3-2.
Specifically, in the present embodiment, the axial directions of the low-speed airflow balancing holes 303 and the high-speed airflow balancing holes 304 are perpendicular to each other, and the aperture of the low-speed airflow balancing holes 303 is larger than that of the high-speed airflow balancing holes 304.
The sound outlet holes 302, the low-speed airflow balance holes 303 and the high-speed airflow balance holes 304 are all provided with the airflow deceleration balance piece in the embodiment 1, when the airflow deceleration balance piece is arranged, it is ensured that one side of the airflow deceleration layer 1 points into the shell 3, the airflow deceleration balance piece arranged at the sound outlet holes 302 can reduce the output vibration speed and reduce turbulence, so that low-frequency distortion is reduced, and turbulence influence can be eliminated by the airflow deceleration balance piece arranged at the low-speed airflow balance holes 303 and the high-speed airflow balance holes 304, and further low-frequency distortion is reduced.
It should be noted that the magnetic driving mechanism of the present embodiment is a conventional structure, such as the structure described in the prior application (CN106550309A) of the applicant, and the description of the present embodiment will not be repeated.
The receiver of the embodiment adopts the non-coaxial end point to drive the vibrating wing 401, the vibrating structure is firmly constrained, the hinge adopts epoxy glue for bonding, meanwhile, airflow speed reduction balancing pieces are adopted in the sound outlet hole 302, the low-speed airflow balancing hole 303 and the high-speed airflow balancing hole 304, the position of the sound outlet hole 302 is optimized, the distortion of low frequency is greatly reduced, and the low-frequency noise reducing microphone is particularly suitable for being used as a bass unit in a consumer earphone.
It should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications belong to the protection scope of the present invention.
Claims (10)
1. An airflow deceleration balance, comprising:
the airflow deceleration layer is of a honeycomb structure and is used for absorbing and buffering airflow;
and the airflow balancing layer is stacked with the airflow deceleration layer, is of a net structure and is used for balancing the airflow passing through the airflow deceleration layer.
2. The airflow deceleration balancing piece as recited in claim 1, wherein the airflow deceleration layer is provided with a plurality of circular through holes, and the axial direction of the circular through holes is perpendicular to the airflow flowing direction.
3. The airflow rate reduction balance member as set forth in claim 1, wherein the airflow rate reduction layer is made of foam or porous asbestos.
4. The airflow deceleration balance of claim 1 wherein said airflow deceleration layer has a thickness of 0.05-0.2 mm.
5. The airflow speed reduction balance piece according to claim 1, wherein the airflow balance layer is provided with a plurality of meshes distributed in an array, the meshes are rectangular, and the size of each mesh is 5-20 μm.
6. The airflow deceleration strip according to claim 1 wherein said airflow balancing layer has a thickness of 0.025-0.1 mm.
7. The airflow deceleration balancing piece according to claim 1, wherein the airflow balancing layer is made of mesh cloth or wire mesh.
8. A bass receiver comprising a housing, a diaphragm, and a magnetic drive mechanism, further comprising the airflow deceleration balancing component of any one of claims 1 to 7.
9. The bass receiver of claim 8, wherein a frame for supporting the diaphragm is provided in the housing, and the diaphragm is provided on the frame to divide the housing into a front acoustic air chamber and a rear acoustic air chamber;
and the vibrating diaphragm is provided with an end point driving vibrating wing, one end of the end point driving vibrating wing is hinged with the frame, and the other end of the end point driving vibrating wing is connected with a connecting rod of the magnetic driving mechanism to form a driving end.
10. The bass receiver of claim 9, wherein a sound outlet is formed in a position on the cavity wall of the front acoustic air cavity corresponding to the driving end of the end point driving vibration wing, and a low-speed airflow balance hole and a high-speed airflow balance hole are formed in the cavity wall of the rear acoustic air cavity;
the three airflow deceleration balancing pieces are respectively arranged at the sound outlet hole, the low-speed airflow balancing hole and the high-speed airflow balancing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911308234.1A CN110868660A (en) | 2019-12-18 | 2019-12-18 | Airflow deceleration balancing piece and bass receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911308234.1A CN110868660A (en) | 2019-12-18 | 2019-12-18 | Airflow deceleration balancing piece and bass receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110868660A true CN110868660A (en) | 2020-03-06 |
Family
ID=69658984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911308234.1A Pending CN110868660A (en) | 2019-12-18 | 2019-12-18 | Airflow deceleration balancing piece and bass receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110868660A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113507672A (en) * | 2021-06-30 | 2021-10-15 | 歌尔股份有限公司 | Non-equal acoustic resistance screen cloth and sound production device |
-
2019
- 2019-12-18 CN CN201911308234.1A patent/CN110868660A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113507672A (en) * | 2021-06-30 | 2021-10-15 | 歌尔股份有限公司 | Non-equal acoustic resistance screen cloth and sound production device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105721996B (en) | Sound production structure unit, earphone comprising sound production structure unit and driving sound production method | |
| CN204993827U (en) | Loudspeaker module | |
| JPWO2013114864A1 (en) | earphone | |
| CN101998216A (en) | Loudspeaker and portable electronic device | |
| CN205491056U (en) | Sound production constitutional unit and contain earphone of this unit | |
| CN109040926A (en) | Microphone device and portable terminal | |
| CN208210250U (en) | Earphone | |
| CN101444109B (en) | Loudspeaker with reduced rocking tendency | |
| WO2023050984A1 (en) | Earphone | |
| CN104105025A (en) | Trumpet structure with integrated active loudspeaker and passive radiator, and sound box | |
| US5131052A (en) | Mid-range loudspeaker assembly propagating forward and backward sound waves in phase | |
| CN110868660A (en) | Airflow deceleration balancing piece and bass receiver | |
| JP2013522946A (en) | speaker | |
| CN204090070U (en) | The horn structure that initiatively loud speaker is integrated with passive radiator and audio amplifier | |
| CN204598304U (en) | Vibration component and be provided with the Microspeaker of this vibration component | |
| CN211184171U (en) | Airflow deceleration balancing piece and bass receiver | |
| CN208940169U (en) | Earphone and headphone unit | |
| CN203896502U (en) | Piezoelectric loudspeaker | |
| CN110381405A (en) | A kind of earplug | |
| WO2021000117A1 (en) | Loudspeaker | |
| CN109151643A (en) | Earphone and headphone unit | |
| US3236328A (en) | Acoustical device with protective screen | |
| JP4538341B2 (en) | Dynamic microphone unit | |
| KR101583650B1 (en) | nonflammables speaker of piezo electricity type | |
| CN109905795B (en) | Ring iron integrated sounding unit and earphone |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |