Multi-output pickup

Abstract

The utility model relates to the field of voice interaction structure design of an intelligent cabin, in particular to a multi-output pickup, which comprises an upper cover, the upper cover is a protective base part and provides fixing and supporting spaces for all parts, positioning cylinders are symmetrically arranged at the top in the upper cover, and a lower cover is used as another protective part and is clamped at the bottom in the upper cover in an embedded manner. Guide columns are symmetrically arranged on the two sides of the top of the lower cover, the positioning cylinders are inserted into the guide columns, the positioning cylinders and the guide columns are embedded, a sound inlet hole is formed in the middle of the interior of the lower cover, and a protective cover is arranged in the middle of the lower portion of the lower cover. Two groups of independent and synchronous audio output channels, a triode group and a diode group are provided, so that a plurality of devices can receive the same high-quality audio signal at the same time, and additional routing switching or use of a plurality of independent microphones is not needed; and in the presence of the follower, two paths of output can work under different direct current bias voltages, so that the flexibility of system configuration is improved, and the requirements of different equipment are met.

Description

Technical Field

[0001] This utility model relates to the field of voice interaction structure design for smart cockpits, specifically to a multi-output microphone. Background Technology

[0002] A microphone is a transducer that converts sound waves into electrical signals. It is widely used in recording, broadcasting, conferencing systems, telephone communications, music production, and various other applications requiring the capture of sound signals; automotive microphones are also known as vehicle microphones or vehicle communication microphones.

[0003] Currently, automotive microphones only have one output signal, which can only be connected to one device. When different devices need to use the same microphone signal, the usual practice is to route the signal through one of the devices. During the routing process, there will be a phase difference. In addition, if the device does not have this function reserved, only two microphones can be used, which increases the cost and makes the layout space difficult.

[0004] Therefore, a multi-output pickup was specially designed. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, the present invention provides a multi-output pickup.

[0006] A multi-output pickup, comprising:

[0007] The top cover serves as a protective base, providing space for fixing and supporting various components. Positioning cylinders are symmetrically arranged on the top of the top cover. The bottom cover, as another protective component, is embedded and snapped into the bottom of the top cover. Guide posts are symmetrically arranged on both sides of the top of the bottom cover. Each positioning cylinder is inserted into the outside of each guide post, and the two are fitted together. A sound inlet is opened in the center of the bottom cover, and a protective cover is provided in the center of the lower part of the bottom cover.

[0008] The connector is inserted into the top of the cover, and the insertion part on the lower side of the connector passes through the inside of the cover. The lower end of the insertion part of the connector is provided with a connector, which has at least three contact pieces.

[0009] Acoustic damping cloth is glued to the inside of the protective cover of the lower cover;

[0010] An integrated circuit board is snapped between the guide pillars of the lower cover. The bottom of the integrated circuit board is attached to the lower cover. An opening corresponding to the sound inlet hole is opened in the center of the interior of the integrated circuit board. Several ports of the contact pieces on the adapter are opened on one side of the interior of the integrated circuit board. The microphone body is snapped in the center of the top of the integrated circuit board. Transistor 1 and Transistor 2 are respectively arranged on one side of the top of the integrated circuit board. A follower is arranged between Transistor 1 and Transistor 2. Diode 1 and Diode 2 are respectively arranged on the other side of the top of the integrated circuit board. A resistor-capacitor-inductor device is arranged in the center of the top of the integrated circuit board.

[0011] The shock-absorbing sealing gasket is located at the center of the top of the lower cover, with its upper surface in contact with the lower surface of the microphone body.

[0012] More preferably, it also includes a sealing ring, which is disposed in the snap-fit ​​joint between the lower cover and the upper cover to achieve a seal between the two.

[0013] More preferably, grooves are symmetrically provided on the inner walls of both sides of the top cover.

[0014] More preferably, it also includes wedges, sliders, and springs. Wedges are slidably provided on both sides of the notch corresponding to the lower cover. The lower cover and the upper cover are in a snap-fit ​​closed state. The wedge-shaped part of the wedges abuts against the notch. The bottom of the two wedges on the same side is provided with sliders. The sliders are located at the bottom of the lower cover, and the upper end of the sliders covers the sliding groove between the wedges and the lower cover. A spring is provided between the lower end of each wedge and the sliding connection of the lower cover.

[0015] More preferably, the bottom of the slider is provided with anti-slip teeth.

[0016] More preferably, it also includes a rubber sleeve as a protective element, which covers the outside of the top cover.

[0017] Compared with the prior art, the present invention has the following advantages: 1. By providing two independent but synchronous audio output channels, with transistor groups and diode groups, multiple devices can receive the same high-quality audio signal at the same time without additional routing or using multiple separate microphones; and with the presence of the follower, the two outputs can work under different DC bias voltages, increasing the flexibility of system configuration and adapting to the needs of different devices.

[0018] 2. The locking mechanism consisting of wedge blocks and springs ensures a tight connection between the upper and lower covers, preventing accidental separation due to vibration or impact, which is especially important in vehicle environments.

[0019] 3. All components, such as integrated circuit boards, connectors, and shock-absorbing gaskets, adopt a modular design, which facilitates assembly and disassembly and simplifies daily maintenance and troubleshooting.

[0020] 4. The sealing ring and rubber sleeve provide excellent waterproof and dustproof capabilities, extending the product's service life, and are especially suitable for complex working conditions in vehicle environments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the assembly structure of this utility model.

[0022] Figure 2 This is a structural diagram of the upper cover, connector, and lower cover of this utility model in an inverted state.

[0023] Figure 3 This is a schematic diagram of the guide post, connector, and top cover of this utility model in an inverted state.

[0024] Figure 4 This is a structural schematic diagram of the integrated circuit board, microphone body, and positioning post of this utility model.

[0025] Figure 5 This is a structural schematic diagram of the shock-absorbing sealing gasket, wedge block, and guide post components of this utility model.

[0026] Figure 6 This is a cross-sectional structural diagram of the wedge block, slider, and spring components of this utility model.

[0027] The meanings of the labels in the attached diagram are as follows: 1. Top cover, 2. Connector, 3. Bottom cover, 4. Acoustic damping cloth, 5. Guide post, 51. Positioning cylinder, 6. Connector, 7. Integrated circuit board, 8. Pickup body, 9. Transistor 1, 91. Transistor 2, 92. Follower, 93. Diode 1, 94. Diode 2, 95. Resistor-capacitor-inductor device, 10. Shock-absorbing sealing gasket, 101. Sealing ring, 11. Wedge block, 12. Slider, 13. Spring, 14. Rubber sleeve. Detailed Implementation

[0028] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] Example: A multi-output pickup, such as Figures 1-6 As shown, it includes:

[0030] The upper cover 1 serves as a protective base, providing protection to the internal components from external physical damage. The inner walls on both sides of the upper cover 1 are symmetrically notched. A positioning cylinder 51 for auxiliary positioning is symmetrically arranged at the top of the upper cover 1. The lower cover 3, as another protective component, is embedded and snapped into the bottom of the upper cover 1, forming a closed space. Guide posts 5 for positioning components are symmetrically arranged on both sides of the top of the lower cover 3. Each positioning cylinder 51 is inserted into the outside of each guide post 5, and the two fit together to ensure a tight connection between the upper cover 1 and the lower cover 3. A sound inlet hole is provided in the center of the lower cover 3 to allow external sound to enter. A protective cover is provided in the center of the lower part of the lower cover 3.

[0031] Connector 2 is inserted into the top of the upper cover 1. The insertion part on the lower side of the connector 2 passes through the interior of the upper cover 1. The lower end of the insertion part of the connector 2 is provided with a connector 6. The connector 6 is provided with at least three contact pieces for electrical connection.

[0032] The acoustic damping cloth 4, which has a dustproof function, is glued inside the protective cover of the lower cover 3. It can reduce unnecessary reflected sound waves, improve the sound pickup quality, and protect the internal components from dust contamination.

[0033] The integrated circuit board 7 is snapped between the guide posts 5 of the lower cover 3. As the core control unit, the integrated circuit board 7 captures, amplifies, and processes audio signals. The bottom of the integrated circuit board 7 fits snugly against the lower cover 3 to ensure good heat dissipation. An opening corresponding to the sound inlet hole is centrally located inside the integrated circuit board 7 to ensure that the sound signal can smoothly reach the collecting device. Several ports for the contact pieces on the adapter 6 are located on one side of the integrated circuit board 7 for electrical connection with the connector 2. A microphone body 8 is snapped into the center of the top of the integrated circuit board 7. The microphone body 8 provides high-quality audio input and is the core sensing element of the entire system. Transistors 9 and 91 are respectively located on one side of the top of the integrated circuit board 7. Transistor 91 forms a two-stage DC-coupled amplifier to amplify the weak audio signal from the microphone body 8. A follower 92 is placed between transistor 91 and transistor 92. The follower 92 is a PNP emitter follower that can perform signal following processing on the signal at C2. On the other side of the top of the integrated circuit board 7, diodes 93 and 94 are respectively placed. Diodes 93 and 94 are used for overvoltage protection or other specific functions to ensure the safety and stability of the circuit. A resistor-capacitor-inductor device 95 is placed in the center of the top of the integrated circuit board 7. The resistor-capacitor-inductor device 95 includes passive components including resistors, capacitors and inductors. It is used for filtering, coupling, bypassing and other functions to maintain signal quality and stability and optimize audio performance.

[0034] The shock-absorbing sealing gasket 10 is located at the center of the top of the lower cover 3. The upper surface of the shock-absorbing sealing gasket 10 is in contact with the lower surface of the microphone body 8 to provide mechanical support and absorb vibration, protecting the internal sensitive components from external vibration.

[0035] like Figures 2-3 As shown, it also includes a sealing ring 101, which is disposed in the snap-fit ​​joint between the lower cover 3 and the upper cover 1 to achieve a seal between the lower cover 3 and the upper cover 1, preventing moisture and dust from entering the interior and improving the product's durability and protection level.

[0036] like Figures 5-6 As shown, it also includes a wedge block 11, a slider 12, and a spring 13. The wedge block 11 is slidably arranged on both sides of the notch corresponding to the lower cover 3. The lower cover 3 and the upper cover 1 are in a snap-fit ​​closed state. The wedge-shaped part of the wedge block 11 is in contact with the notch. The bottom of the two wedge blocks 11 on the same side is provided with a slider 12. The bottom of the slider 12 is provided with anti-slip teeth. The slider 12 is located at the bottom of the lower cover 3, and the upper end of the slider 12 covers the sliding groove of the wedge block 11 and the lower cover 3. A spring 13 is provided between the lower end of each wedge block 11 and the sliding connection of the lower cover 3. The wedge block 11, the slider 12, and the spring 13 form a mechanical locking mechanism to ensure that the upper cover 1 and the lower cover 3 are tightly connected and prevent accidental separation.

[0037] like Figure 1 As shown, it also includes a rubber sleeve 14 as the outermost protective component. The rubber sleeve 14 covers the outside of the upper cover 1 and provides additional waterproof and dustproof capabilities, enhancing the overall protective performance.

[0038] When using the device, if only one output channel is needed, first confirm the input interface type of the target device (such as a car phone or GPS navigation system) and prepare the corresponding connection cable. Connect the microphone body 8 to the target device through connector 2. Connector 2 is located on the top of the cover 1, and its lower plug-in part passes through the inside of the cover 1 and mates with the contact piece on the integrated circuit board 7. At this time, only the M+1 and M-1 output terminals are used as signal output paths. These ports directly obtain the amplified audio signal from the amplifier composed of transistor 9 and transistor 2. When it is necessary to provide the same audio signal to multiple devices, confirm the input interface type of all target devices and prepare the corresponding connection cable. Connect two sets of devices simultaneously through connector 2, one set connected to M+1 and M-1, and the other set connected to M+2 and M-2. With the presence of follower 92Q3, the signal characteristics of the two outputs are completely identical, but the DC bias voltages can be different, which increases the flexibility of the system. Follower 92 performs signal following processing on the signal at output 2, ensuring that the signal characteristics of output 2 are the same as those of output 1, including sensitivity, frequency response, and phase response. The AC coupling design ensures that the DC path between the two outputs is isolated, so even if one output fails, the other output can still work normally. Depending on the specific application scenario, the sensitivity and frequency response of the pickup body 8 can be fine-tuned by adjusting the resistor-capacitor-inductor device 95 on the circuit board. Finally, the pickup body 8 can be turned on in a quiet environment to check for obvious environmental noise interference. If necessary, the position or thickness of the acoustic damping cloth 4 can be adjusted to further reduce reflected sound waves.

[0039] During installation, place the upper cover 1 on the workbench, noting its opening direction. Insert connector 2 into the pre-drilled interface on the top of the upper cover 1, ensuring that the lower side of connector 2 passes through the interior of the upper cover 1 and aligns with the contact piece on the internal circuit board. Connector 2 should then be securely inserted. Carefully attach the integrated circuit board 7 between the guide posts 5 of the lower cover 3, ensuring its bottom fits well against the lower cover 3 for good heat dissipation. Check that the opening in the center of the integrated circuit board 7 is aligned with the sound inlet hole of the lower cover 3. After confirming that the ports on the board are correctly aligned with the contact points of connector 2, attach the microphone body 8 to the top center of the integrated circuit board 7, ensuring it is correctly connected to other components on the board (such as transistor 9, transistor 91, follower 92, diode 93, diode 2, and resistor-capacitor-inductor 95). Place the shock-absorbing sealing gasket 10 at the top center of the lower cover 3, ensuring its upper surface is in close contact with the lower surface of the microphone body 8. This not only provides mechanical support but also absorbs vibrations and protects internal sensitive components. Then, insert the lower cover 3... The insert clip is attached to the bottom of the upper cover 1, ensuring that the guide posts 5 on both sides of the top of the lower cover 3 are engaged with the positioning cylinder 51 inside the upper cover 1. When the lower cover 3 is pushed into the upper cover 1, the wedge-shaped part of the wedge block 11 will first contact the inner wall of the upper cover 1. Due to the wedge design, as the lower cover 3 continues to move forward, the wedge block 11 will be gradually pressed into the interior of the lower cover 3, causing the spring 13 to be compressed. As the lower cover 3 moves further forward, the pressure on the wedge block 11 from the inner wall of the upper cover 1 gradually increases, and the degree of compression of the spring 13 also increases. When the wedge block 11 When the spring 13 has completely slid over the narrowest part of the inner wall of the upper cover 1 and reached the notch position, the spring 13 releases its stored energy and quickly pushes the wedge block 11 to pop out and embed into the notch. At this time, the wedge-shaped part of the wedge block 11 firmly abuts against the notch, forming a mechanical lock. Then, use appropriate glue or double-sided tape to stick the acoustic damping cloth 4 to the inside of the protective cover of the lower cover 3. Finally, install the sealing ring 101 in the snap joint between the lower cover 3 and the upper cover 1 to ensure that an effective seal is formed between the two, preventing moisture and dust from entering the interior and improving the durability of the product.

[0040] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the present invention and should not be construed as limiting the scope of protection of the present invention in any way. Based on this explanation, those skilled in the art can conceive of other specific embodiments of the present invention without creative effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. A multi-output pickup, characterized in that, Including: The upper cover (1) is a protective base, providing space for fixing and supporting each component. The upper cover (1) has symmetrically arranged positioning cylinders (51) at the top. The lower cover (3) is another protective component, embedded in the bottom of the upper cover (1). The lower cover (3) has symmetrically arranged guide posts (5) on both sides of the top. Each positioning cylinder (51) is inserted into the outside of each guide post (5), and the two are fitted together. The lower cover (3) has a sound inlet hole in the center. The lower part of the lower cover (3) has a protective cover in the center. The connector (2) is inserted into the top of the cover (1), and the insertion part on the lower side of the connector (2) passes through the inside of the cover (1). The lower end of the insertion part of the connector (2) is provided with a connector (6), and the connector (6) is provided with at least three contact pieces. Acoustic damping cloth (4) is glued to the inside of the protective cover of the lower cover (3); An integrated circuit board (7) is snapped between the guide posts (5) of the lower cover (3). The bottom of the integrated circuit board (7) is attached to the lower cover (3). An opening corresponding to the sound inlet hole is opened in the center of the integrated circuit board (7). Several ports of the contact pieces on the adapter (6) are opened on one side of the integrated circuit board (7). A pickup body (8) is snapped in the center of the top of the integrated circuit board (7). A transistor 1 (9) and a transistor 2 (91) are respectively arranged on one side of the top of the integrated circuit board (7). A follower (92) is arranged between the transistor 1 (9) and the transistor 2 (91). A diode 1 (93) and a diode 2 (94) are respectively arranged on the other side of the top of the integrated circuit board (7). A resistor-capacitor-inductor device (95) is arranged in the center of the top of the integrated circuit board (7). A shock-absorbing sealing pad (10) is located at the center of the top of the lower cover (3), and the upper end surface of the shock-absorbing sealing pad (10) is in contact with the lower end surface of the pickup body (8).

2. A multi-output pickup as described in claim 1, characterized in that, It also includes: A sealing ring (101) is provided at the snap-fit ​​joint between the lower cover (3) and the upper cover (1) to achieve a seal between the two.

3. A multi-output pickup as described in claim 2, characterized in that: The inner walls on both sides of the top cover (1) are symmetrically provided with notches.

4. A multi-output pickup as described in claim 3, characterized in that, It also includes: The wedge block (11) is slidably set on both sides of the corresponding notch of the lower cover (3). The lower cover (3) and the upper cover (1) are in a snap-fit ​​closed state, and the wedge-shaped part of the wedge block (11) is in contact with the notch. A slider (12) is set at the bottom of two wedge blocks (11) on the same side. The slider (12) is located at the bottom of the lower cover (3), and the upper end of the slider (12) covers the sliding groove of the wedge block (11) and the lower cover (3). A spring (13) is set between the lower end of the wedge block (11) and the sliding connection of the lower cover (3).

5. A multi-output pickup as described in claim 4, characterized in that: Anti-slip teeth are provided at the bottom of the slider (12).

6. A multi-output pickup as described in claim 5, characterized in that, It also includes: A rubber sleeve (14) is used as a protective cover over the outside of the top cover (1).

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