Ultra-miniature Bluetooth earphone mainboard

Abstract

The utility model relates to the technical field of main boards, and discloses an ultra-miniature Bluetooth earphone main board, anti-electromagnetic interference is realized by arranging structures such as a Bluetooth module, a winding inductor, a main board and the like, the Bluetooth module receives a Bluetooth signal, so that the main board is connected with a mobile terminal, electromagnetic interference is caused to a signal module in a signal transmission process, and the main board cannot be damaged. By arranging the winding inductor on the adjacent side of the Bluetooth module, electromagnetic drying on the signal module during signal connection is absorbed or weakened, the receiving and transmitting effects of the antenna are enhanced, the anti-electromagnetic interference effect is achieved, wireless charging is achieved by arranging the Hall element, the wireless disc and other structures, and when an external wireless charger makes contact with the earphone box, the wireless charging effect is improved. When the wireless charger is charged, alternating current with a certain frequency is generated by the charging coil, certain current is generated in the secondary coil through electromagnetic induction, so that energy is transferred from the wireless charger to the charging coil, the charging coil transmits the current to the Hall element through the connecting wire, and the wireless charging effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mainboards, in particular to an ultra-miniature Bluetooth headset mainboard. Background Art

[0002] As Bluetooth headsets have more and more functions, such as automatic sensing power on and off, noise reduction technology, etc., in order to meet these functional requirements, more and more electronic devices need to be installed in the headsets to achieve this. These electronic devices need to be connected to the PCB board. Therefore, there are a large number of connecting wires in the headsets. When the headsets are working, the connecting wires transmit current signals. The complex spatial distribution of these connecting wires will affect the performance of the Bluetooth antenna, or act as a parasitic antenna to affect the RF performance, resulting in unstable headset signal transmission.

[0003] In the existing Bluetooth headsets, the charging of the Bluetooth headset has always been limited to charging with a connecting cable. In the event that the connecting cable is forgotten during travel, the power of the Bluetooth headset cannot be replenished in time. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an ultra-miniature Bluetooth headset mainboard, which has the advantages of anti-electromagnetic interference and wireless charging, and solves the problems raised by the above-mentioned background technology.

[0005] The utility model provides the following technical solutions: an ultra-micro Bluetooth headset mainboard, comprising a mainboard, a Bluetooth module fixedly installed on the top of the mainboard, winding inductors fixedly installed on both sides of the Bluetooth module on the top of the mainboard, a charging port fixedly installed on the middle of the top of the mainboard, a signal module fixedly installed on the top of the mainboard on one side of the charging port, a Hall element fixedly installed on the top of the mainboard on one side of the signal module, and a wireless disk fixedly installed on the top of the mainboard on one side of the Hall element.

[0006] Preferably, the charging port is electrically connected to the Bluetooth module and the winding inductor through the mainboard, the charging port is electrically connected to the signal module through the mainboard, and the charging port is electrically connected to the Hall element through the mainboard.

[0007] Preferably, the winding inductor includes a bottom plate A and a top plate, the bottom plate A and the top plate are made of insulating resin material, a magnetic core is fixedly installed between the bottom plate A and the top plate, and a winding coil is wound around the outside of the magnetic core.

[0008] Preferably, the Hall element includes a base plate B, components are fixedly installed on the top of the base plate B, pins are fixedly installed between the components and the mainboard, a charging coil is provided inside the wireless disk, a connecting wire is fixedly connected between the charging coil and the components, and the Hall element and the wireless disk are electrically connected to each other through the connecting wire.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] 1. The ultra-micro Bluetooth headset mainboard achieves anti-electromagnetic interference by setting up structures such as Bluetooth module, winding inductor, and mainboard. The Bluetooth module receives Bluetooth signals to connect the mainboard to the mobile terminal. During the signal transmission process, electromagnetic interference will be caused to the signal module. By setting a winding inductor on the adjacent side of the Bluetooth module, the electromagnetic interference generated by the signal module during the signal connection is absorbed or weakened, thereby enhancing the reception and transmission effects of the antenna and achieving the effect of anti-electromagnetic interference.

[0011] 2. The ultra-micro Bluetooth headset motherboard realizes wireless charging by setting structures such as Hall elements and wireless disks. When the external wireless charger contacts the earphone box, it generates alternating current of a certain frequency with the charging coil, and generates a certain current in the secondary coil through electromagnetic induction, thereby transferring energy from the wireless charger to the charging coil. The charging coil transmits the current to the Hall element through the connecting wire, thereby realizing the effect of wireless charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the wire-wound inductor of the utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the Hall element of the utility model.

[0015] In the figure: 1. Main board; 2. Bluetooth module; 3. Winding inductor; 31. Bottom plate A; 32. Top plate; 33. Winding coil; 4. Charging port; 5. Signal module; 6. Hall element; 61. Bottom plate B; 62. Components; 63. Pins; 7. Wireless disk; 71. Charging coil; 72. Connecting wire. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1, an ultra-miniature Bluetooth headset motherboard, including a motherboard 1, a Bluetooth module 2 is fixedly installed on the top of the motherboard 1, winding inductors 3 are fixedly installed on both sides of the Bluetooth module 2 on the top of the motherboard 1, a charging port 4 is fixedly installed on the middle of the top of the motherboard 1, and a signal module 5 is fixedly installed on the top of the motherboard 1 on one side of the charging port 4. When working, in order to solve the electromagnetic interference problem existing in the layout design of the PCB board of the Bluetooth headset, the Bluetooth module 2 receives the Bluetooth signal to connect the motherboard 1 with the mobile terminal, which will cause electromagnetic interference to the signal module 5 during the signal transmission process. By arranging the winding inductor 3 on the adjacent side of the Bluetooth module 2, the electromagnetic dryness generated by the signal module 5 during the signal connection is absorbed or weakened, thereby enhancing the receiving and transmitting effects of the antenna.

[0018] See also Figure 1-Figure 3 A Hall element 6 is fixedly installed on the top of the mainboard 1, located on one side of the signal module 5. A wireless disk 7 is fixedly installed on the top of the mainboard 1, located on one side of the Hall element 6. The charging port 4 is electrically connected to the Bluetooth module 2 and the winding inductor 3 through the mainboard 1. The charging port 4 is electrically connected to the signal module 5 through the mainboard 1. The charging port 4 is electrically connected to the Hall element 6 through the mainboard 1.

[0019] See also Figure 1-Figure 2 The winding inductor 3 includes a bottom plate A31 and a top plate 32, the bottom plate A31 and the top plate 32 are made of insulating resin material, a magnetic core is fixedly installed between the bottom plate A31 and the top plate 32, and a winding coil 33 is wound around the outside of the magnetic core.

[0020] See also Figure 1-Figure 3 The Hall element 6 includes a bottom plate B61, a component 62 is fixedly installed on the top of the bottom plate B61, a pin 63 is fixedly installed between the component 62 and the main board 1, a charging coil 71 is arranged inside the wireless disk 7, a connecting wire 72 is fixedly connected between the charging coil 71 and the component 62, and the Hall element 6 and the wireless disk 7 are electrically connected to each other through the connecting wire 72;

[0021] The Hall element 6 and the wireless disk 7 constitute an integrated wireless charging function. The Hall element 6 is used to detect the opening and closing of the earphone box. The switch integrated in the Hall element 6 is regularly arranged on the object at a predetermined position. When the permanent magnet mounted on the moving object passes through it, a pulse signal can be measured from the measuring circuit to obtain the detection result of the earphone box switch. When the external wireless charger contacts the earphone box, it generates alternating current of a certain frequency with the charging coil 71, and generates a certain current in the secondary coil through electromagnetic induction, thereby transferring energy from the wireless charger to the charging coil 71, and the charging coil 71 transmits the current to the Hall element 6 through the connecting line 72, thereby achieving the effect of wireless charging.

[0022] Working principle: When working, the switch integrated in the Hall element 6 is regularly arranged on the object at a predetermined position. When the permanent magnet mounted on the moving object passes through it, a pulse signal can be measured from the measuring circuit to obtain the detection result of the headphone box switch. The electromagnetic interference problem exists in the layout design of the Bluetooth headset PCB board. The Bluetooth module 2 receives the Bluetooth signal to connect the main board 1 with the mobile terminal. During the signal transmission process, electromagnetic interference will be caused to the signal module 5. By setting a winding inductor 3 on the adjacent side of the Bluetooth module 2, the electromagnetic dryness generated by the signal module 5 during the signal connection is absorbed or weakened, thereby enhancing the reception and transmission effects of the antenna. The Hall element 6 and the wireless disk 7 constitute a wireless charging integrated function. The Hall element 6 is used to realize the opening and closing detection of the headphone box. When the external wireless charger contacts the headphone box, it generates alternating current of a certain frequency with the charging coil 71, and generates a certain current in the secondary coil through electromagnetic induction, thereby transferring energy from the wireless charger to the charging coil 71, and the charging coil 71 transmits the current to the Hall element 6 through the connecting line 72, thereby achieving the effect of wireless charging.

Claims

1. An ultra-miniature Bluetooth headset motherboard, comprising a motherboard (1), characterized in that: A Bluetooth module (2) is fixedly installed on the top of the mainboard (1); winding inductors (3) are fixedly installed on both sides of the Bluetooth module (2) on the top of the mainboard (1); a charging port (4) is fixedly installed in the middle of the top of the mainboard (1); a signal module (5) is fixedly installed on the top of the mainboard (1) on one side of the charging port (4); a Hall element (6) is fixedly installed on the top of the mainboard (1) on one side of the signal module (5); and a wireless disk (7) is fixedly installed on the top of the mainboard (1) on one side of the Hall element (6).

2. The ultra-miniature Bluetooth headset motherboard according to claim 1, characterized in that: The charging port (4) is electrically connected to the Bluetooth module (2) and the winding inductor (3) through the mainboard (1), the charging port (4) is electrically connected to the signal module (5) through the mainboard (1), and the charging port (4) is electrically connected to the Hall element (6) through the mainboard (1).

3. The ultra-miniature Bluetooth headset motherboard according to claim 2, characterized in that: The winding inductor (3) comprises a bottom plate A (31) and a top plate (32), wherein the bottom plate A (31) and the top plate (32) are made of insulating resin material, a magnetic core is fixedly installed between the bottom plate A (31) and the top plate (32), and a winding coil (33) is wound around the outside of the magnetic core.

4. The ultra-miniature Bluetooth headset motherboard according to claim 3, characterized in that: The Hall element (6) comprises a base plate B (61), a component (62) is fixedly mounted on the top of the base plate B (61), a pin (63) is fixedly mounted between the component (62) and the main board (1), a charging coil (71) is arranged inside the wireless disk (7), a connecting wire (72) is fixedly connected between the charging coil (71) and the component (62), and the Hall element (6) and the wireless disk (7) are electrically connected to each other via the connecting wire (72).

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