A magnetic attraction type connecting structure of a decoding earphone

Abstract

The utility model belongs to audio playback equipment technical field, concretely relates to a magnetic attraction formula connecting structure of decoding earphone, including earphone shell, the PCB board of being located in earphone shell, still include at least one magnet of being fixed in earphone shell, a magnet sheet, the magnet sheet is located on the playback equipment connected with decoding earphone. The utility model's connecting structure passes through the combination of magnet and magnet sheet, prevents the relative playback equipment of decoding earphone from shaking in the use process, thereby greatly improves the experience of listening to music, avoids the FPC bending simultaneously because of shaking, thereby leads to the sound interruption, appears the noise and shortens the service life, the length of FPC is greatly shortened, and the length of the FPC connected between playback equipment and decoding earphone, not only appearance is beautiful, and saves the cost, at the same time, the earphone shell is additionally provided with charging interface, avoids the charging interface of playback equipment from being occupied by the flat plug on decoding earphone and cannot charge.

Description

Technical Field

[0001] This utility model relates to the field of audio playback equipment technology, specifically to a magnetic, hidden USB cable connection structure for connecting a decoding headphone amplifier to mobile audio playback devices such as mobile phones and tablets. Background Technology

[0002] A headphone amp is primarily used to receive digital audio signals from a USB port, decode them, convert them into analog audio signals, and then amplify them. Currently, headphone amps and mobile phones are connected via a C-to-C (or Lightning) cable. However, having a small, compact phone with a cable connected to a headphone amp (commonly known as a "cannon") has several drawbacks:

[0003] 1. It's not easy to fix the wired headphones in place; when you plug them in and they swing around, the wires are easy to break.

[0004] 2. The dangling cable is extremely unsightly, and because it cannot be used with a dedicated DAC / amp, the user experience is also very poor.

[0005] 3. The quality of sound heavily depends on the quality of the cable; shielding and signal integrity are not easy to achieve.

[0006] 4. The cable is relatively long, making it easy to receive radio frequency signals radiated from the phone's antenna, which seriously interferes with the sound.

[0007] 5. When the plug on the decoding headphone amplifier is plugged into a mobile phone or other playback device, it cannot charge the mobile phone. The USB cable needs to be unplugged to charge the mobile phone, which is inconvenient to use. Utility Model Content

[0008] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a magnetic, hidden USB cable connection structure for a decoding headphone amplifier.

[0009] The technical solution is as follows: A magnetic connection structure for a decoding headphone amplifier includes a headphone amplifier housing, a PCB board disposed inside the headphone amplifier housing, and at least one magnet and a magnetic attracting plate fixed inside the headphone amplifier housing; the magnetic attracting plate is disposed on a playback device connected to the decoding headphone amplifier for attracting the magnet, thereby enabling a stable connection between the playback device, such as a mobile phone or tablet computer, and the decoding headphone amplifier.

[0010] Preferably, it also includes an FPC with one end located inside one end of the headphone amplifier housing and electrically connected to the PCB board, and the other end of the FPC located outside the headphone amplifier housing and provided with a flat plug for connecting to a playback device.

[0011] Preferably, there are two magnets, one of which is located inside the headphone amplifier housing at one end, and the other is in contact with one end of the PCB board; the magnet is made of iron and has a thickness of 0.5mm.

[0012] Preferably, the end of the FPC on the headphone amplifier housing has a recessed mounting countersunk hole, and a fixing plate fixedly connected to the headphone amplifier housing is embedded in the mounting countersunk hole; the board-to-board connector male socket on the FPC is connected to the FPC female socket located at the mounting countersunk hole to realize the connection of power and signal; the fixing plate fixes the board-to-board connector male socket in one end of the headphone amplifier housing; the FPC female socket is electrically connected to the PCB board.

[0013] Preferably, it also includes a plug holder for mounting a flat plug, one end of which is perpendicularly connected to the inner side of the plug holder.

[0014] Preferably, the other end of the FPC passes through the plug socket and is electrically connected to the flat plug; the headphone amplifier housing has a built-in FPC with one end connected to the PCB board, and the FPC female end is located at the other end of the built-in FPC; a reinforcing metal sheet is also provided at the other end of the built-in FPC and the FPC female end is fixed on the surface of the reinforcing metal sheet; the reinforcing metal sheet has a longitudinal adjustment hole located on one side of the FPC female end.

[0015] Preferably, the headphone amplifier housing is provided with a charging interface; the power and signal of the charging interface are connected to the power and signal of the FPC on the PCB board.

[0016] Technical benefits: The connection structure of this utility model combines magnets and magnetic plates. During use, the playback device and the decoding headphone amplifier are stacked together, and the playback device is fixedly connected to the decoding headphone amplifier by the magnets. This prevents the decoding headphone amplifier from shaking relative to the playback device during use, thereby greatly improving the music listening experience. At the same time, it avoids the FPC (equivalent to a USB connection cable) from bending due to shaking, which could lead to sound interruption, noise, and shortened lifespan. It is not only aesthetically pleasing but also cost-effective. In addition, a charging port is added to the headphone amplifier shell to prevent charging from being interrupted when the playback device's charging port is occupied by the flat plug on the decoding headphone amplifier. Attached Figure Description

[0017] Figure 1 This is a front view of the decoding headphone amplifier and the connection structure in an embodiment of the present invention;

[0018] Figure 2 This is a bottom view of the decoding headphone amplifier and the connecting structure in an embodiment of the present invention;

[0019] Figure 3 This is a top view of the decoding headphone amplifier and the connection structure in an embodiment of the present invention;

[0020] Figure 4 This is a partial exploded view showing the connection between the decoding headphone amplifier and the connecting structure in an embodiment of this utility model;

[0021] Figure 5 This is an exploded view of the connection structure according to an embodiment of the present utility model;

[0022] Figure 6 This is a perspective view of the decoding headphone amplifier and the connecting structure connected according to an embodiment of the present utility model;

[0023] Figure 7 This is another partially exploded view showing the connection between the decoding headphone amplifier and the connecting structure in an embodiment of this utility model;

[0024] Figure 8 This is a front view of the built-in FPC in an embodiment of this utility model;

[0025] Figure 9 This is a right view of the built-in FPC in an embodiment of the present invention;

[0026] Figure 10 This is a rear view of the built-in FPC in an embodiment of the present invention.

[0027] Reference numerals: Headphone amplifier housing - 1, Mounting countersunk hole - 101, PCB board - 2, Magnet - 3, Magnetizing plate - 4, FPC - 5, Board-to-board connector male socket - 501, Flat plug - 6, Fixing plate - 7, Screw - 701, Plug socket - 8, Charging interface - 9, FPC female socket end - 10, Internal FPC - 11, Reinforcing metal plate - 12, Vertical adjustment hole - 1201. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] like Figures 1-4 As shown, this embodiment of the utility model provides a magnetic connection structure for a decoding headphone amplifier, including a headphone amplifier housing 1, a PCB board 2 disposed within the headphone amplifier housing, and, in order to fix the playback device and the decoding headphone amplifier together during use, at least one magnet 3 and a magnetic attractor 4 fixed within the headphone amplifier housing; the magnetic attractor is disposed on the playback device connected to the decoding headphone amplifier. Here, the playback device refers to a device that provides a playback source to the decoding headphone amplifier; common playback devices include mobile electronic devices with playback functions such as mobile phones and tablets.

[0030] This embodiment uses two magnets 3 as an example for illustration. When arranging the two magnets, one is located at one end inside the headphone amplifier housing, and the other is in contact with one end of the PCB board 2. The magnetic sheet 4 is made of iron and has a thickness of 0.5mm. It is used to attach the decoding headphone amplifier to the back of the mobile phone, avoiding the need for adhesive or binding methods for fixed connection. Figure 3As shown. Obviously, the magnet 3 here is used to combine with the magnetic plate 4 to attract and fix the playback device. Therefore, this function can be achieved by setting one or more magnets 3 inside the headphone amplifier housing. Of course, setting one magnet can also achieve this function.

[0031] like Figures 4-7 As shown, to achieve electrical connection between the playback device and the decoding headphone amplifier, an FPC 5 is included, with one end located inside one end of the headphone amplifier housing 1 and electrically connected to the PCB board 2. The other end of the FPC is located outside the headphone amplifier housing and has a flat plug 6 for plugging into the playback device. Here, the FPC is a flexible flat cable, equivalent to the common USB cable connector. The FPC adopts an impedance design and is shielded to ensure signal integrity, improve anti-interference capability, and reduce EMI radiation. The impedance design of the FPC is existing technology. The flat plug 6 is a custom product with a small thickness, comparable to the thickness of the charging (data) port of a playback device, such as a mobile phone, and can only cover the charging (data) port on the mobile phone. The end of the FPC 5 located inside one end of the headphone amplifier housing 1 is a board-to-board connector electrically connected to the PCB board 2, which is hidden inside the decoding headphone amplifier housing, greatly improving the aesthetics of the decoding headphone amplifier after connection.

[0032] To secure the end of the FPC 5 connected to the headphone amplifier housing 1, a recessed mounting countersunk hole 101 is provided inside the end of the FPC 5 on the headphone amplifier housing 1. A fixing plate 7, which is fixedly connected to the headphone amplifier housing 1, is embedded in the mounting countersunk hole. The board-to-board connector male socket 501 on the FPC is connected to the FPC female socket end 10 located at the mounting countersunk hole 101 to achieve power and signal connection. The fixing plate fixes the board-to-board connector male socket inside one end of the headphone amplifier housing. The FPC female socket end 10 is electrically connected to the PCB board 2. The fixing plate 7 is fixedly connected to the headphone amplifier housing 1 by two screws 701.

[0033] To secure the flat plug 6, a plug socket 8 for mounting the flat plug 6 is also included, with one end of the flat plug being perpendicularly connected to the inner side of the plug socket.

[0034] like Figures 8-10As shown, the other end of the FPC passes through the plug socket 8 and is electrically connected to the flat plug 6; the headphone amplifier housing 1 has a built-in FPC 11 with one end connected to the PCB board 2, and the FPC female end 10 is located at the other end of the built-in FPC; a reinforcing metal plate 12 is also provided at the other end of the built-in FPC, and the FPC female end is fixed to the surface of the reinforcing metal plate; the reinforcing metal plate has a longitudinal adjustment hole 1201 located on one side of the FPC female end; during installation, the installation height of the reinforcing metal plate 12 is adjusted appropriately according to the thickness of the playback device. Specifically, if the playback device is thick, the position of the reinforcing metal plate 12 is adjusted to make it closer to the playback device. At this time, the FPC female end 10 moves synchronously. After adjustment, the reinforcing metal plate is fixed in the mounting countersunk hole 101 by screws 701 passing through the longitudinal adjustment hole 1201 of the reinforcing metal plate; then the board-to-board connector male end 501 is inserted into the FPC female end 10. Obviously, after adjusting the position of the reinforcing metal plate, the FPC The section of FPC protruding from the headphone amplifier housing 1 that fits against the playback device is longer, allowing it to accommodate thicker playback devices; conversely, a shorter section can accommodate thinner playback devices. This flexibility allows for cost savings by shortening the cable length.

[0035] The headphone amplifier housing 1 is equipped with a charging interface 9; the power and signal of the charging interface are connected to the power and signal of the FPC on the PCB board 2. In use, when the flat plug 6 is inserted into a playback device, such as a mobile phone's USB socket, to play music, the charging interface is occupied and cannot charge the mobile phone. The charging interface 9 can be used to charge the mobile phone while simultaneously switching to the charger powering the decoding headphone amplifier.

[0036] In the above description, it should be noted that the terms "installation", "connection", "connection" and other related terms should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components; "set at" should be understood as "installed at" or "set at", including installation methods such as fixed installation and movable installation.

[0037] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Any equivalent structures made based on the description and drawings of this utility model, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A magnetic connection structure for a decoding headphone amplifier, comprising a headphone amplifier housing (1) and a PCB board (2) disposed within the headphone amplifier housing, characterized in that, It also includes at least one magnet (3) and one magnetic plate (4) fixed inside the headphone amplifier housing; the magnetic plate is located on the playback device connected to the decoding headphone amplifier.

2. The magnetic connection structure of a decoding headphone amplifier as described in claim 1, characterized in that, It also includes an FPC (5) with one end located inside one end of the headphone amplifier housing (1) and electrically connected to the PCB board (2), and the other end of the FPC located outside the headphone amplifier housing and provided with a flat plug (6) for connecting to a playback device.

3. The magnetic connection structure of a decoding headphone amplifier as described in claim 1, characterized in that, The magnet (3) consists of two pieces, one of which is located inside the headphone amplifier housing at one end, and the other is in contact with one end of the PCB board (2); the magnet (4) is made of iron and has a thickness of 0.5mm.

4. The magnetic connection structure of a decoding headphone amplifier as described in claim 2, characterized in that, The headphone amplifier housing (1) has an FPC (5) with a recessed mounting countersunk hole (101) inside the end. A fixing plate (7) is embedded in the mounting countersunk hole and fixedly connected to the headphone amplifier housing (1). The board-to-board connector male socket (501) on the FPC is connected to the FPC female socket end (10) located at the mounting countersunk hole (101) to realize the connection of power and signal. The fixing plate fixes the board-to-board connector male socket inside one end of the headphone amplifier housing. The FPC female socket end (10) is electrically connected to the PCB board (2).

5. The magnetic connection structure of a decoding headphone amplifier as described in claim 4, characterized in that, It also includes a plug socket (8) for mounting a flat plug (6), one end of which is perpendicularly connected to the inner side of the plug socket.

6. The magnetic connection structure of a decoding headphone amplifier as described in claim 5, characterized in that, The other end of the FPC passes through the plug socket (8) and is electrically connected to the flat plug (6); the headphone amplifier housing (1) has a built-in FPC (11) with one end connected to the PCB board (2), and the FPC female end (10) is located at the other end of the built-in FPC; a reinforcing metal sheet (12) is also provided at the other end of the built-in FPC and the FPC female end is fixed on the surface of the reinforcing metal sheet; the reinforcing metal sheet has a longitudinal adjustment hole (1201) located on one side of the FPC female end.

7. The magnetic connection structure of a decoding headphone amplifier as described in claim 4, characterized in that, The headphone amplifier housing (1) is provided with a charging interface (9); the power and signal of the charging interface are connected to the power and signal of the FPC on the PCB board (2).

Images