Magnetic type recording equipment
By designing a sound-conducting and sound-receiving cavity structure in a magnetic recording device, combined with a circuit board and signal processor, the problem of low recording quality in noisy environments of traditional recording devices is solved, achieving a simplification of the recording device structure and an improvement in recording clarity.
Patent Information
- Application Number
- CN202422950465.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-11-29
AI Technical Summary
Traditional recording equipment produces low-quality recordings in noisy environments and has a limited pickup range, making it difficult to capture distant or faint sounds, resulting in insufficient clarity and recognizability of the recordings.
Design a magnetic recording device that uses a sound-collecting assembly consisting of a sound guide and a sound receiver arranged opposite each other. The sound guide hole and the sound receiver hole are connected to form a pickup cavity. The diameter of the sound receiver hole is smaller than that of the sound guide hole. Combined with a circuit board and a signal processor, it reduces environmental noise interference and improves recording quality.
It simplifies the structure of recording equipment, reduces costs, effectively reduces environmental noise interference, and improves the clarity and recognizability of recordings.
Smart Images
Figure CN223515016U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of recording, and more particularly to a magnetic recording device. Background Technology
[0002] In today's digital age, recording audio from mobile phones or the surrounding environment has become a common need in people's daily lives and work. Traditional recording devices, such as handheld voice recorders and built-in recording functions in mobile phones, primarily capture sound through microphones and convert it into electrical signals for storage. However, these traditional devices are often affected by environmental noise during recording, resulting in low recording quality, especially in noisy environments where the clarity and intelligibility of the recording are significantly reduced. Furthermore, traditional devices have limited pickup range, making it difficult to capture distant or faint sounds, thus limiting their widespread application.
[0003] To improve the recording efficiency of recording equipment, the industry has tried various technical solutions. One common method is to use noise reduction technology, which uses algorithms to reduce environmental noise in the recording and improve speech clarity. Another solution is to enhance the sensitivity of the microphone to expand the pickup range and improve the ability to capture weak sounds. In addition, there is a technology that uses a multi-microphone array layout, where multiple microphones work together to achieve sound localization and enhancement, thereby improving recording quality. However, while these technical solutions improve recording quality to some extent, they are often accompanied by problems such as increased cost, structural complexity, and increased power consumption.
[0004] Therefore, there is a need for a magnetic recording device that simplifies the recording structure and reduces interference from environmental noise. Utility Model Content
[0005] In view of this, it is necessary to provide a magnetic recording device that simplifies the recording structure and reduces interference from environmental noise in order to solve the above problems.
[0006] An embodiment of this application provides a magnetic recording device, comprising:
[0007] case;
[0008] A microphone assembly is disposed within the housing. The microphone assembly includes a sound guide and a sound receiver disposed opposite to each other. The sound guide has a sound guide hole communicating with the outside, and the sound receiver has a sound receiver hole. The sound guide hole and the sound receiver hole communicate to form a pickup cavity, and the diameter of the sound receiver hole is smaller than the diameter of the sound guide hole.
[0009] A circuit board is disposed within the housing. The circuit board has a connecting portion that is sandwiched between the sound guide and the sound receiver, and the circuit board is electrically connected to the sound receiver.
[0010] In at least one embodiment of this application, the housing includes a limiting layer and a magnet layer. The limiting layer is disposed between the magnet layer and the circuit board. The magnet layer is disposed on the side away from the receiver. The limiting layer has a first limiting groove, the opening of the first limiting groove is disposed facing the circuit board, and the sound guide is disposed in the first limiting groove.
[0011] In at least one embodiment of this application, the circuit board includes a first side and a second side disposed opposite to each other, the sound guide is disposed on the first side, and the sound receiver is disposed on the second side.
[0012] In at least one embodiment of this application, the circuit board includes a connection hole located at the connection portion, the connection hole penetrating through the first surface and the second surface, so that the connection hole connects the sound guide hole and the sound receiving hole.
[0013] In at least one embodiment of this application, the housing includes a first sound inlet hole, which penetrates the limiting layer and the magnet layer, and is connected to the sound guide hole.
[0014] In at least one embodiment of this application, the housing includes a second sound inlet hole opened along the horizontal direction of the housing, the second sound inlet hole being disposed on the side wall of the housing and communicating with the sound guide hole.
[0015] In at least one embodiment of this application, the pickup cavity includes a first channel and a second channel communicating with the first channel. The first channel is disposed along the extending direction of the second sound inlet hole, and the first channel is communicating with the second sound inlet hole. The second channel is communicating with the sound receiving hole.
[0016] In at least one embodiment of this application, the magnetic recording device further includes a magnetic element disposed within the housing and arranged side-by-side with the circuit board, and the limiting layer further includes a second limiting groove, in which the magnetic element is disposed.
[0017] In at least one embodiment of this application, the circuit board further includes a signal processor disposed on the circuit board and electrically connected to the radio.
[0018] In at least one embodiment of this application, the circuit board further includes a memory disposed on the circuit board, and the memory is electrically connected to the radio and the signal processor.
[0019] The aforementioned magnetic recording device incorporates a sound-receiving assembly within its housing. This assembly comprises a sound guide and a sound receiver positioned opposite each other. The sound guide has a sound-guiding hole that communicates with the outside environment, while the sound receiver has a sound-receiving hole that connects to the sound guide hole to form a pickup cavity. The diameter of the sound receiver is smaller than the diameter of the sound guide hole. This design not only simplifies the structure of the recording device and reduces costs, but also effectively reduces the amount of environmental noise entering the sound guide by utilizing the difference in diameter between the sound receiver and the sound guide hole, thereby improving the clarity and intelligibility of the recording. Attached Figure Description
[0020] Figure 1 This is an exploded view of the structure of a magnetic recording device according to an embodiment of this application.
[0021] Figure 2 This is a schematic diagram of the structure of the first sound inlet hole in an embodiment of this application.
[0022] Figure 3 This is an exploded cross-sectional view of the recording device in the embodiments of this application.
[0023] Figure 4 This is a magnified structural diagram of A in the recording device in this application embodiment.
[0024] Figure 5 This is a schematic diagram of the structure of the second sound inlet hole in the horizontal direction of the housing according to an embodiment of this application.
[0025] Figure 6 This is a cross-sectional view along the horizontal direction of the shell in an embodiment of this application.
[0026] Explanation of main component symbols
[0027] 100. A magnetic recording device; 10. Housing; 10a. First sound inlet; 10b. Second sound inlet; 11. Limiting layer; 111. First limiting groove; 112. Second limiting groove; 12. Magnet layer; 20. Receiver assembly; 21. Sound guide; 211. Sound guide hole; 22. Receiver assembly; 221. Sound receiving hole; 23. Pickup cavity; 231. First channel; 232. Second channel; 30. Circuit board; 31. Connecting part; 31a. Connecting hole; 32. First surface; 33. Second surface; 40. Magnetic component; 50. Signal processor; 60. Memory. Detailed Implementation
[0028] The embodiments of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.
[0029] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or may also have an intervening component. When a component is considered to be "placed" on another component, it can be directly placed on the other component or may also have an intervening component. The terms "top," "bottom," "upper," "lower," "left," "right," "front," "back," and similar expressions used in this article are for illustrative purposes only.
[0030] An embodiment of this application provides a magnetic recording device, comprising:
[0031] case;
[0032] A microphone assembly is disposed within the housing. The microphone assembly includes a sound guide and a sound receiver disposed opposite to each other. The sound guide has a sound guide hole communicating with the outside, and the sound receiver has a sound receiver hole. The sound guide hole and the sound receiver hole communicate to form a pickup cavity, and the diameter of the sound receiver hole is smaller than the diameter of the sound guide hole.
[0033] A circuit board is disposed within the housing. The circuit board has a connecting portion that is sandwiched between the sound guide and the sound receiver, and the circuit board is electrically connected to the sound receiver.
[0034] The aforementioned magnetic recording device incorporates a sound-receiving assembly within its housing. This assembly comprises a sound guide and a sound receiver positioned opposite each other. The sound guide has a sound-guiding hole that communicates with the outside environment, while the sound receiver has a sound-receiving hole that connects to the sound guide hole to form a pickup cavity. The diameter of the sound receiver is smaller than the diameter of the sound guide hole. This design not only simplifies the structure of the recording device and reduces costs, but also effectively reduces the amount of environmental noise entering the sound guide by utilizing the difference in diameter between the sound receiver and the sound guide hole, thereby improving the clarity and intelligibility of the recording.
[0035] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0036] according to Figures 1-6 This application provides a magnetic recording device 100, including: a housing 10, a sound receiving component 20, and a circuit board 30.
[0037] The receiver assembly 20 is disposed within the housing 10. The receiver assembly 20 includes a sound guide 21 and a receiver 22 disposed opposite to each other. The sound guide 21 has a sound guide hole 211 communicating with the outside, and the receiver 22 has a sound receiving hole 221. The sound guide hole 211 and the sound receiving hole 221 communicate to form a pickup cavity 23, and the diameter of the sound receiving hole 221 is smaller than the diameter of the sound guide hole 211. The circuit board 30 is disposed within the housing 10. The circuit board 30 has a connecting part 31, which is sandwiched between the sound guide 21 and the receiver 22, and the circuit board 30 is electrically connected to the receiver 22.
[0038] Specifically, the housing 10 is the overall outer shell of the recording device, the receiver 22 is a silicon microphone, and the sound guide 21 isolates the housing 10 from the receiver 22, allowing external sounds to enter the pickup cavity 23, which is composed of the sound guide 211 and the receiver 221, through the sound guide 211. The relatively positioned sound guide 21 and receiver 22 form a tightly fitted pickup assembly 20, resulting in a pickup cavity 23 with only two openings: the sound guide 211 and the receiver 221. This ensures that sound information entering the pickup cavity 23 through the sound guide 211 can only be transmitted to the receiver 22 through the receiver 221, improving pickup efficiency. The pickup assembly 20 captures external sounds and generates sound signals, which are then transmitted to other components on the circuit board 30. The diameter of the sound receiving hole 221 is smaller than the diameter of the sound guiding hole 211, which can effectively reduce the interference of environmental noise and improve the recording quality.
[0039] Furthermore, the connecting part 31 of the circuit board 30 is used to install the sound guide 21 and the sound receiver 22. The sound guide 21 and the sound receiver 22 are fixed to the circuit board 30 by soldering. There are two sets of sound receiver assemblies 20, which are symmetrically arranged inside the housing 10.
[0040] In summary, when recording is required, the user places the recording device in the desired location. Due to the characteristics of sound transmission, the sound waves are transmitted through the sound guide hole 211 to the sound pickup cavity 23 via a solid or air transmission medium. The air cavity fluctuations in the sound pickup cavity 23 are captured by the sound receiving element 22 through the sound receiving hole 221 and converted into electrical signals. Finally, the signals are processed and transmitted to the storage medium through the circuit board 30.
[0041] In one specific embodiment, the housing 10 includes a limiting layer 11 and a magnet layer 12. The limiting layer 11 is disposed between the magnet layer 12 and the circuit board 30. The magnet layer 12 is disposed on the side away from the microphone 22. The limiting layer 11 has a first limiting groove 111. The opening of the first limiting groove 111 faces the circuit board 30, and the sound guide 21 is disposed in the first limiting groove 111.
[0042] Specifically, the limiting layer 11 provides a fixing function for the internal structure of the housing 10, ensuring the stability of the circuit board 30 and other components. The first limiting groove 111 on the limiting layer 11 is set with its opening facing the circuit board 30, which facilitates the installation and fixing of the sound guide 21. This prevents the sound guide 21 from becoming misaligned or loose within the housing 10 when the recording equipment experiences large-arc vibrations or drops, thus affecting the recording quality.
[0043] Furthermore, the magnet layer 12 utilizes the properties of magnetic materials, allowing the device to adhere to a metal surface, increasing its flexibility and convenience. In use, one side of the magnet layer 12 is attached to a metal component, such as the back cover of a mobile phone, enabling convenient recording anytime, anywhere.
[0044] In one specific embodiment, the circuit board 30 includes a first surface 32 and a second surface 33 disposed opposite to each other, the sound guide 21 is disposed on the first surface 32, and the sound receiver 22 is disposed on the second surface 33.
[0045] Specifically, the circuit board 30 has a double-sided layout, with one side used to install the sound guide 21 and the other side used to install the receiver 22. Since the sound guide 21 and the receiver 22 are located on different sides of the circuit board 30, mutual interference between them can be reduced, allowing the sound guide 21 of the sound guide 21 to communicate with the sound receiving hole 221 of the receiver 22, thereby improving the recording quality.
[0046] In one specific embodiment, the circuit board 30 includes a connection hole 31a located in the connection portion 31. The connection hole 31a passes through the first surface 32 and the second surface 33, so that the connection hole 31a connects the sound guide hole 211 and the sound receiving hole 221.
[0047] Specifically, the presence of the connecting hole 31a creates a direct channel between the sound guide hole 211 and the sound receiver hole 221, facilitating the transmission of sound signals from the sound guide 21 to the sound receiver 22.
[0048] In this embodiment, the sound guide hole 211 is connected to the first sound inlet hole 10a of the housing 10. The first sound inlet hole 10a is connected to the outside, allowing external audio to enter the sound guide hole 211 through the first sound inlet hole 10a. The first sound inlet hole 10a penetrates the limiting layer 11 and the magnet layer 12. The first sound inlet hole 10a is located on the same side as the magnet layer 12. When the recording device is attached to the back cover of a mobile phone or other metal object, the back cover of the mobile phone covers the first sound inlet hole 10a. At this time, the pickup cavity 23 forms a sealed air cavity, which has a better recording effect.
[0049] During a call or sound recording, sound waves from the phone's speaker or external environment propagate through a solid medium such as the phone's back cover, reaching the first sound inlet 10a covered by the phone's back cover. The sound vibrations from the phone's back cover are then transmitted through the air inside the first sound inlet 10a, sequentially through the sound guide hole 211, the pickup cavity 23, and the receiver hole 221, to the receiver 22.
[0050] In the second embodiment, the second sound inlet 10b, which is connected to the outside world through the sound guide hole 211, allows external sound waves to be directly transmitted to the sound guide hole 211 through the second sound inlet 10b. The second sound inlet 10b is located on the side wall of the housing 10, so that the second sound inlet 10b is located alone on one side of the housing 10 and is not covered by any object. During a call or sound recording, sound waves from the mobile phone speaker or the outside world need to be transmitted through the outside air. External sound waves can directly enter the sound guide hole 211 through the second sound inlet 10b, so that the sound wave vibration is transmitted through the air in the second sound inlet 10b through the sound guide hole 211, the pickup cavity 23, and the receiving hole 221 to the receiving element 22.
[0051] In one specific embodiment, the pickup cavity 23 includes a first channel 231 and a second channel 232 communicating with the first channel 231. The first channel 231 is arranged along the extending direction of the second sound inlet hole 10b and is communicating with the second sound inlet hole 10b. The second channel 232 is communicating with the sound receiving hole 221.
[0052] Specifically, during transmission, due to the design of the second sound inlet 10b, the pickup cavity 23 of the receiver assembly 20 has a first channel 231 and a second channel 232. The first channel 231 is generated along the extension direction of the second sound inlet 10b, and the second sound inlet 10b is disposed on the side wall of the housing 10. The extension direction of the second sound inlet 10b is the horizontal direction of the housing 10. The horizontal arrangement of the first channel 231 and the second sound inlet 10b allows the sound wave to directly enter the first channel 231 through the second sound inlet 10b. The second channel 232, which is connected to the first channel 231, transmits the sound wave to the receiver 221.
[0053] In one specific embodiment, the magnetic recording device further includes a magnetic suction member 40, which is disposed inside the housing 10 and arranged side by side with the circuit board 30. The limiting layer 11 further includes a second limiting groove 112, in which the magnetic suction member 40 is disposed.
[0054] Specifically, the magnetic component 40 allows the recording device to be firmly attached to various metal surfaces without slipping, making it easy to attach to the back cover of a mobile phone and improving the convenience of recording during calls. The second limiting groove 112 of the limiting layer 11 fixes the magnetic component 40 inside the housing 10, preventing the magnetic component 40 from becoming misaligned within the housing 10 and affecting the internal structure of the recording device in the event of large-arc vibrations or drops.
[0055] In one specific embodiment, the circuit board 30 further includes a signal processor 50, which is disposed on the circuit board 30 and electrically connected to the radio receiver 22.
[0056] Specifically, the signal processor 50 is responsible for performing a series of processing operations on the audio signal received by the receiver 22, such as digital conversion, filtering and noise reduction, in order to improve the recording quality and reduce the noise level.
[0057] In one specific embodiment, the circuit board 30 further includes a memory 60, which is disposed on the circuit board 30 and electrically connected to the radio 22 and the signal processor 50.
[0058] Specifically, memory 60 is used to temporarily store recording data.
[0059] Therefore, the magnetic recording device 100 provided above incorporates a sound-receiving assembly 20 within the housing 10. This assembly comprises a sound guide 21 and a sound receiver 22 arranged opposite to each other. The sound guide 211 has a sound guide hole 211 that communicates with the outside, while the sound receiver 22 has a sound receiver hole 221 that communicates with the sound guide hole 211 to form a pickup cavity 23. The diameter of the sound receiver hole 221 is smaller than the diameter of the sound guide hole 211. This design not only simplifies the structure of the recording device and reduces costs, but also effectively reduces the amount of environmental noise entering the sound guide 21 by using the difference in diameter between the sound receiver hole 221 and the sound guide hole 211, thereby improving the clarity and intelligibility of the recording.
[0060] The above description is merely an embodiment of this application. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this application, but these improvements all fall within the protection scope of this application.
Claims
1. A magnetic recording device, characterized in that, include: case; A microphone assembly is disposed within the housing. The microphone assembly includes a sound guide and a sound receiver disposed opposite to each other. The sound guide has a sound guide hole communicating with the outside, and the sound receiver has a sound receiver hole. The sound guide hole and the sound receiver hole communicate to form a pickup cavity, and the diameter of the sound receiver hole is smaller than the diameter of the sound guide hole. A circuit board is disposed within the housing. The circuit board has a connecting portion that is sandwiched between the sound guide and the sound receiver, and the circuit board is electrically connected to the sound receiver.
2. The magnetic recording device according to claim 1, characterized in that, The housing includes a limiting layer and a magnet layer. The limiting layer is disposed between the magnet layer and the circuit board. The magnet layer is disposed on the side away from the microphone. The limiting layer has a first limiting groove, the opening of the first limiting groove is facing the circuit board, and the sound guide is disposed in the first limiting groove.
3. The magnetic recording device according to claim 1, characterized in that, The circuit board includes a first side and a second side arranged opposite to each other, the sound guide is disposed on the first side, and the sound receiver is disposed on the second side.
4. The magnetic recording device according to claim 3, characterized in that, The circuit board includes a connection hole located at the connection portion, the connection hole penetrating through the first surface and the second surface, so that the connection hole connects the sound guide hole and the sound receiving hole.
5. A magnetic recording device according to claim 2, characterized in that, The housing includes a first sound inlet hole, which penetrates the limiting layer and the magnet layer, and is connected to the sound guide hole.
6. A magnetic recording device according to claim 1, characterized in that, The housing includes a second sound inlet hole opened along the horizontal direction of the housing. The second sound inlet hole is located on the side wall of the housing and communicates with the sound guide hole.
7. A magnetic recording device according to claim 6, characterized in that, The pickup cavity includes a first channel and a second channel connected to the first channel. The first channel is arranged along the extension direction of the second sound inlet hole and is connected to the second sound inlet hole. The second channel is connected to the sound receiving hole.
8. A magnetic recording device according to claim 2, characterized in that, The magnetic recording device further includes a magnetic suction component, which is disposed inside the housing and arranged side by side with the circuit board. The limiting layer further includes a second limiting groove, in which the magnetic suction component is disposed.
9. A magnetic recording device according to claim 1, characterized in that, The circuit board also includes a signal processor, which is disposed on the circuit board and electrically connected to the radio.
10. A magnetic recording device according to claim 9, characterized in that, The circuit board also includes a memory disposed on the circuit board, and the memory is electrically connected to the radio and the signal processor.