CN116887146A - Bone conduction loudspeaker based on conical magnetic circuit - Google Patents
Bone conduction loudspeaker based on conical magnetic circuit Download PDFInfo
- Publication number
- CN116887146A CN116887146A CN202311037106.4A CN202311037106A CN116887146A CN 116887146 A CN116887146 A CN 116887146A CN 202311037106 A CN202311037106 A CN 202311037106A CN 116887146 A CN116887146 A CN 116887146A
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- Prior art keywords
- bone conduction
- vibration
- magnetic circuit
- conical
- conduction speaker
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 53
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 230000035945 sensitivity Effects 0.000 claims abstract description 8
- 230000002708 enhancing effect Effects 0.000 claims abstract description 4
- 230000002159 abnormal effect Effects 0.000 abstract description 6
- 210000001503 joint Anatomy 0.000 abstract 2
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 5
- 230000004044 response Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 210000000860 cochlear nerve Anatomy 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003625 skull Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
The invention provides a bone conduction loudspeaker based on a conical magnetic circuit, which comprises: the upper cover is in butt joint with the shell and is used for forming a closed space of the bone conduction loudspeaker; the vibration transmission sheet is arranged at the lower part of the upper cover and used for transmitting vibration waves to the upper cover; the washer is arranged above the conical magnetic circuit assembly and is used for conducting magnetic and enhancing a magnetic field; the conical magnetic circuit assembly is arranged in the center of the bottom of the shell and is used for generating an alternating magnetic field and uniformly distributing the magnetic field between the air gaps; and the shell is in butt joint with the upper cover and is used for forming a closed space of the bone conduction loudspeaker. According to the bone conduction speaker based on the conical magnetic circuit, the vibration transmission sheet is directly connected with the coil, so that the volume and the mass of a vibration system are reduced, abnormal sounds are avoided, the magnetic field between air gaps is uniformly distributed due to the design of the conical magnetic circuit with the conical head, and the sensitivity of the bone conduction speaker is improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of bone conduction headphones, in particular to a bone conduction speaker based on a conical magnetic circuit.
Background
The bone conduction earphone is characterized in that the sound conduction is directly transmitted to the auditory nerve through the skull, the hearing of a user is protected while the bone conduction earphone is comfortable to wear, and the bone conduction earphone has unique superiority. The existing bone conduction earphone has the defects that firstly, a coil and a vibration transmission sheet are connected through a panel, the design is complicated, and the mass and the volume are large; secondly, as the vibration transmission sheet is connected with the magnet and hung on the shell, the mass of the magnet is heavier, and the coil is easy to touch in the reciprocating motion process to generate abnormal sound; finally, the layout of the traditional design components can lead to disordered magnetic field distribution among air gaps, and influence the response sensitivity of the bone conduction speaker to acoustic vibration. Therefore, developing a bone conduction speaker based on a conical magnetic circuit can effectively overcome the defects in the related art, and is a technical problem to be solved in the industry.
Disclosure of Invention
Aiming at the problems existing in the prior art, the embodiment of the invention provides a bone conduction loudspeaker based on a conical magnetic circuit.
In a first aspect, embodiments of the present invention provide a bone conduction speaker based on a conical magnetic circuit, comprising: an upper cover 101, which is butted with the housing 105, for forming an enclosed space of the bone conduction speaker; a vibration-transmitting sheet 102 provided at a lower portion of the upper cover 101 for transmitting vibration waves to the upper cover 101; washer 103, which is arranged above conical magnetic circuit assembly 104 and is used for magnetic conduction and enhancing magnetic field; the conical magnetic circuit assembly 104 is arranged in the center of the bottom of the shell 105 and is used for generating an alternating magnetic field and uniformly distributing the magnetic field between the air gaps; a housing 105, which interfaces with the upper cover 101, for forming an enclosed space for the bone conduction speaker.
Based on the above-mentioned device embodiment, the thickness of the vibration-transmitting sheet 102 of the bone conduction speaker based on a conical magnetic circuit according to the embodiment of the present invention is 0.7 mm or more and 1 mm or less.
Based on the above-mentioned device embodiment, the bone conduction speaker based on the conical magnetic circuit provided in the embodiment of the present invention, the vibration-transmitting sheet 102 includes four vibration-transmitting arms, and the distance between every two adjacent vibration-transmitting arms is equal.
Based on the foregoing disclosure of the device embodiment, the bone conduction speaker based on a conical magnetic circuit provided in the embodiment of the present invention, the conical magnetic circuit assembly 104 includes: a coil 201 connected to the vibration-transmitting plate 102 for supplying an alternating current; a magnet 202 provided on the cone base 203 for generating a magnetic field; a conical head base 203 is disposed at the bottom center of the housing 105 for accommodating the magnet 202.
Based on the foregoing description of the embodiment of the device, the bone conduction speaker based on a conical magnetic circuit provided in the embodiment of the present invention, the conical head base 203 includes: a circular chassis 301 for mounting a cone head 302; the conical head 302 is arranged in the middle of the circular chassis 301 and extends into the middle of the coil 201, so that uniform magnetic field distribution is formed between air gaps, and the sensitivity of the bone conduction speaker is improved.
Based on the above-mentioned device embodiment, the bone conduction speaker based on the conical magnetic circuit provided in the embodiment of the present invention, the top end of the inner side wall of the housing 105 is provided with a step along the circumferential direction, and the vibration-transmitting sheet 102 is mounted on the step.
Based on the above-mentioned embodiment of the device, in the bone conduction speaker based on a conical magnetic circuit provided in the embodiment of the present invention, after the coil 201 is energized with an alternating current, the coil 201 reciprocates up and down to generate a vibration wave, and the vibration wave is transmitted through the vibration transmitting sheet 102.
According to the bone conduction speaker based on the conical magnetic circuit, the vibration transmission sheet is directly connected with the coil, so that the volume and the mass of a vibration system are reduced, abnormal sounds are avoided, the magnetic field between air gaps is uniformly distributed due to the design of the conical magnetic circuit with the conical head, and the sensitivity of the bone conduction speaker is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the prior art descriptions, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without any inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a bone conduction speaker based on a conical magnetic circuit according to an embodiment of the present invention;
FIG. 2a is a schematic cross-sectional view of a conical magnetic circuit assembly according to an embodiment of the present invention;
FIG. 2b is a schematic diagram illustrating an explosion effect of a conical magnetic circuit assembly according to an embodiment of the present invention;
FIG. 3 is a schematic view of a conical head base structure according to an embodiment of the present invention;
fig. 4 is a schematic diagram of the overall composition structure of a bone conduction speaker based on a conical magnetic circuit according to an embodiment of the present invention.
Description of the embodiments
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. In addition, the technical features of each embodiment or the single embodiment provided by the invention can be combined with each other at will to form a feasible technical scheme, and the combination is not limited by the sequence of steps and/or the structural composition mode, but is necessarily based on the fact that a person of ordinary skill in the art can realize the combination, and when the technical scheme is contradictory or can not realize, the combination of the technical scheme is not considered to exist and is not within the protection scope of the invention claimed.
An embodiment of the present invention provides a bone conduction speaker based on a conical magnetic circuit, referring to fig. 1, the device includes: an upper cover 101, which is butted with the housing 105, for forming an enclosed space of the bone conduction speaker; a vibration-transmitting sheet 102 provided at a lower portion of the upper cover 101 for transmitting vibration waves to the upper cover 101; washer 103, which is arranged above conical magnetic circuit assembly 104 and is used for magnetic conduction and enhancing magnetic field; the conical magnetic circuit assembly 104 is arranged in the center of the bottom of the shell 105 and is used for generating an alternating magnetic field and uniformly distributing the magnetic field between the air gaps; a housing 105, which interfaces with the upper cover 101, for forming an enclosed space for the bone conduction speaker.
Based on the above embodiments, the thickness of the vibration-transmitting sheet 102 of the bone conduction speaker based on a conical magnetic circuit according to the embodiments of the present invention is 0.7 mm or more and 1 mm or less.
In another embodiment, the thickness of the vibration-transmitting sheet 102 may be 0.75 millimeters, 0.8 millimeters, 0.85 millimeters, or 0.9 millimeters. The vibration transmission sheet of the technical scheme of the invention is softer and has wider frequency response range. The traditional vibration transmission sheet is welded on the base of the variable magnet formed by the magnetic material and the coil, and generally has larger elastic modulus, harder and narrower frequency response range. The vibration transmission sheet of the technical scheme of the invention is directly hung on the shell, is softer, has smaller Young modulus and wider frequency response range.
Based on the above embodiments, the bone conduction speaker based on the conical magnetic circuit provided in the embodiment of the present invention, the vibration transmitting sheet 102 includes four vibration transmitting arms, and the distance between every two adjacent vibration transmitting arms is equal.
Referring to fig. 2a, based on the foregoing embodiment, the bone conduction speaker based on a conical magnetic circuit provided in the embodiment of the present invention, the conical magnetic circuit assembly 104 includes: a coil 201 connected to the vibration-transmitting plate 102 for supplying an alternating current; a magnet 202 provided on the cone base 203 for generating a magnetic field; a conical head base 203 is disposed at the bottom center of the housing 105 for accommodating the magnet 202. The three-dimensional effect of the cone-shaped magnetic circuit assembly 104 can be seen in fig. 2b.
Referring to fig. 3, on the basis of the above embodiment, the bone conduction speaker based on a conical magnetic circuit provided in the embodiment of the present invention, the conical head base 203 includes: a circular chassis 301 for mounting a cone head 302; the conical head 302 is arranged in the middle of the circular chassis 301 and extends into the middle of the coil 201, so that uniform magnetic field distribution is formed between air gaps, and the sensitivity of the bone conduction speaker is improved.
The vibration transmission sheet is directly connected with the coil, so that the production and the assembly are easy, and the volume and the mass of the vibrator are reduced. The traditional vibrator uses the panel, connects coil and vibration transmission piece through the panel, and the design is comparatively loaded down with trivial details, no matter quality or volume, all are great. The technical scheme of the invention adopts the conical head to perform conical arrangement on the end part of the conical iron, so that the magnetic field between air gaps is uniformly distributed, and the sensitivity is higher.
Referring to fig. 1, on the basis of the above-mentioned embodiment, the bone conduction speaker based on a conical magnetic circuit provided in the embodiment of the present invention, the top end of the inner side wall of the housing 105 is provided with a step in the circumferential direction, and the vibration-transmitting sheet 102 is mounted on the step.
The vibration transmission sheet is arranged on the step and connected with the coil, the mass is small, when the vibration transmission sheet is worn, the coil is difficult to touch the air gap magnet under the action of gravity, abnormal sound is avoided, and the fatigue and aging problems of the vibration transmission sheet are avoided. The traditional vibrator is hung on the shell due to the fact that the vibration transmission sheet is connected with the magnet, the magnet is heavy in mass, the coil fixed on the shell is easily touched in the reciprocating motion process, abnormal sound is further generated, and the vibration transmission sheet is easy to fatigue and age.
Referring to fig. 1, on the basis of the above-mentioned embodiments, in the bone conduction speaker based on a conical magnetic circuit provided in the embodiments of the present invention, after the coil 201 is supplied with an alternating current, the coil 201 reciprocates up and down to generate a vibration wave, and the vibration wave is transmitted through the vibration transmitting sheet 102.
The overall structural composition of the bone conduction speaker based on the conical magnetic circuit provided in the embodiment of the present invention can be seen in fig. 4, and each component has the same structure and function as the aforementioned component, and is not repeated here
According to the bone conduction speaker based on the conical magnetic circuit, the vibration transmission sheet is directly connected with the coil, so that the volume and the mass of a vibration system are reduced, abnormal sounds are avoided, the magnetic field between air gaps is uniformly distributed due to the design of the conical magnetic circuit with the conical head, and the sensitivity of the bone conduction speaker is improved.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A bone conduction speaker based on a conical magnetic circuit, comprising: an upper cover (101) which is butted with the shell (105) and is used for forming a closed space of the bone conduction speaker; a vibration-transmitting sheet (102) provided at the lower part of the upper cover (101) for transmitting vibration waves to the upper cover (101); the washer (103) is arranged above the conical magnetic circuit assembly (104) and is used for conducting magnetic and enhancing a magnetic field; the conical magnetic circuit assembly (104) is arranged in the center of the bottom of the shell (105) and is used for generating an alternating magnetic field and uniformly distributing the magnetic field between the air gaps; and a housing (105) which is abutted with the upper cover (101) and is used for forming a closed space of the bone conduction speaker.
2. The bone conduction speaker as recited in claim 1, wherein the thickness of the vibration-transmitting sheet (102) is 0.7 mm or more and 1 mm or less.
3. The bone conduction speaker as recited in claim 2, wherein the vibration-transmitting sheet (102) includes four vibration-transmitting arms, and a pitch between every two adjacent vibration-transmitting arms is equal.
4. A bone conduction speaker based on a cone magnetic circuit according to claim 3, characterized in that said cone magnetic circuit assembly (104) comprises: a coil (201) connected with the vibration transmission sheet (102) and used for introducing alternating current; a magnet (202) disposed on the cone base (203) for generating a magnetic field; and the conical head base (203) is arranged at the center of the bottom of the shell (105) and is used for containing the magnet (202).
5. The bone conduction speaker as recited in claim 4, wherein the cone head base (203) includes: a circular chassis (301) for mounting a conical head (302); the conical head (302) is arranged in the middle of the circular chassis (301) and stretches into the middle of the coil (201) to form uniform magnetic field distribution among air gaps, so that the sensitivity of the bone conduction loudspeaker is improved.
6. The bone conduction speaker based on the cone magnetic circuit as recited in claim 5, wherein a top end of an inner side wall of the housing (105) is provided with a step in a circumferential direction, and the vibration transmitting sheet (102) is mounted on the step.
7. The bone conduction speaker as recited in claim 6, wherein the coil (201) is configured to reciprocate up and down to generate a vibration wave after the alternating current is applied to the coil (201), and to transmit the vibration wave through the vibration transmitting sheet (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311037106.4A CN116887146A (en) | 2023-08-17 | 2023-08-17 | Bone conduction loudspeaker based on conical magnetic circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311037106.4A CN116887146A (en) | 2023-08-17 | 2023-08-17 | Bone conduction loudspeaker based on conical magnetic circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116887146A true CN116887146A (en) | 2023-10-13 |
Family
ID=88255211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311037106.4A Pending CN116887146A (en) | 2023-08-17 | 2023-08-17 | Bone conduction loudspeaker based on conical magnetic circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116887146A (en) |
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2023
- 2023-08-17 CN CN202311037106.4A patent/CN116887146A/en active Pending
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