CN201290175Y - Microtype phonating device - Google Patents

Abstract

The utility model provides a miniature sound-generating device, which comprises a frame for accommodating the required components of the miniature sound-emitting device and a circuit board for electrically connecting with an external circuit. The circuit board is provided with a gap, and the bottom of the pot frame is provided with There is a protrusion engaged with the notch. Compared with the prior art, the circuit board and the pot frame of the utility model realize the good positioning of the circuit board on the bottom of the pot frame through the engagement of the notch and the protrusion, so that the incoming and outgoing wires of the voice coil can be directly and accurately connected with the circuit board. The board is connected to make the electrical connection of the product stable, so that the product performance is good.

Description

micro sound device

【Technical field】

The utility model relates to a miniature sounding device, in particular to a structure of a basin frame of the miniature sounding device.

【Background technique】

Miniature sound generating devices are widely used in portable electronic devices such as mobile phones, notebook computers, and hearing aids. With the rapid development of these portable electronic devices, people's functional requirements are getting stronger and stronger, and the miniature sound-generating devices applied to them are also developing correspondingly and rapidly.

The miniature sound-generating device of the related structure mainly includes a bowl-shaped basin frame, an upper cover connected with the basin frame and provided with a sound hole, and the basin frame and the upper cover form a cavity. The cavity is provided with a permanent magnet and a pole piece housed in the frame and forming a magnetic gap with the frame, a diaphragm adjacent to the upper cover, a voice coil connected to the diaphragm and suspended in the magnetic gap, A circuit board for realizing connection with an external circuit is arranged on the bottom of the outer side of the pot frame, and the incoming and outgoing lines of the voice coil pass through holes provided on the pot frame to connect with the circuit board. When the alternating audio current is applied to the circuit board, the voice coil is driven alternately in the magnetic gap to produce alternating motion, which drives the diaphragm to vibrate and produce sound.

When assembling the circuit board of the miniature sound-generating device of this related structure, the circuit board needs to be positioned on the basin frame and fixed by glue or other methods. However, in the micro-sounding device product of this related structure, there is inaccurate positioning of the circuit board, which leads to the fact that the incoming and outgoing lines of the voice coil cannot be directly and accurately connected to the circuit board, which affects the electrical connection of the product and leads to poor product performance.

Therefore, it is necessary to study an electromagnetic sounder with a new structure.

【Content of utility model】

The technical problem to be solved by the utility model is to provide a micro-sounding device with good performance.

According to the above-mentioned technical problems to be solved, a miniature sounding device is designed, including a frame for accommodating the required components of the miniature sounding device and a circuit board for electrically connecting with an external circuit, the circuit board is provided with a gap, The bottom of the pot frame is provided with a protrusion engaged with the notch.

As a further improvement of the utility model, the protrusions are protruding posts arranged at both ends of the bottom of the basin frame.

Compared with the prior art, the circuit board and the pot frame of the utility model realize the good positioning of the circuit board on the pot frame through the engagement of the notch and the protrusion, and the obtained product has good performance and effect.

【Description of drawings】

Fig. 1 is the three-dimensional exploded view of the miniature sounding device of the present invention;

Fig. 2 is a three-dimensional schematic diagram of the utility model micro-sounding device;

Fig. 3 is a schematic diagram of a full cross-section along the direction A-A in Fig. 2 .

【Detailed ways】

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

As shown in Fig. 1, the miniature sounding device of the present utility model comprises a loam cake 11, a diaphragm 12, a voice coil 13 comprising incoming and outgoing wires, a pole piece 14, a permanent magnet 15, a frame 16, and a circuit board 17.

The bottom of the basin frame is bowl-shaped to accommodate and support various components. As shown in FIG. 13 is suspended in the magnetic gap 10, and the diaphragm 12 connected with the voice coil and the edge of the upper cover 11 are fixedly connected to the frame 16.

The outer surface of the bottom of the pot frame 16 is provided with protrusions, which are used to position the circuit board on the pot frame. For better positioning, the protrusions are protrusions 161 located at both ends of the outer surface of the bottom of the pot frame. . The two protrusions 161 can be directly cut out on the basin frame through a mold. The circuit board 17 is also provided with a notch 170 engaged with the two protrusions, and the circuit board is positioned on the basin frame through the engagement of the protrusion 161 and the notch 170 .

A hole 160 is also provided at the bottom of the basin frame for the voice coil inlet and outlet wires 130 to pass through.

As shown in Figure 2, the circuit board 17 is used for electrical conduction, the input and output wires 130 of the voice coil pass through the hole 160 provided on the basin frame to connect with the circuit board, and the circuit board is then electrically connected with the external circuit to realize the input Audio electrical signal. When the alternating audio current is applied to the circuit board, the voice coil is driven alternately in the magnetic gap to produce alternating motion, which drives the diaphragm to vibrate and produce sound.

In the embodiment of the utility model, the circuit board and the pot frame realize the good positioning of the circuit board on the bottom of the pot frame through the engagement of the gap and the protrusion, so that the incoming and outgoing lines of the voice coil can be directly and accurately connected with the circuit board, so that the product The electrical connection is stable, so that the product performance is good.

What has been described above is only the embodiment of the utility model, and it should be pointed out that for those of ordinary skill in the art, improvements can also be made without departing from the inventive concept of the utility model, but these all belong to Protection scope of the present utility model.

Claims (2)

1, a kind of mini-sound device comprises the basin frame of accommodating the required element of this mini-sound device and the circuit board in order to electrically connect with external circuit, and it is characterized in that: described circuit board is provided with breach, and the bottom of basin frame is provided with the projection that engages with described breach.

2, mini-sound device according to claim 1 is characterized in that: described projection is to be located at the projection at two ends, basin frame bottom.

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