CN201290177Y - Minitype electric energy phonation device - Google Patents

Abstract

The utility model relates to the field of electro-acoustic energy conversion, in particular to a sounding device that converts electrical energy into acoustic energy. A single positioning step is arranged on the basin frame, and the edges of the diaphragm and the upper cover are sequentially overlapped and positioned on the positioning step surface. , and the diaphragm is equipped with a concave anti-folding ring, which not only helps to expand the frequency response range, but also facilitates the assembly of the diaphragm. The design of a single positioning step also avoids the phenomenon of incorrect installation of the diaphragm, making the assembly process of the electric energy sounding device simple. It is fast and efficient, reduces cost, and can be widely used in sounding devices with diaphragm elements.

Description

Miniature Electric Energy Sound Device

【Technical field】

The utility model relates to the field of electroacoustic energy conversion, in particular to a sounding device for converting electrical energy into acoustic energy.

【Background technique】

Miniature sound generating devices are widely used in portable electronic devices such as mobile phones and notebook computers. 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.

Micro sound-generating devices are used to complete the conversion between electrical energy and sound energy, such as speakers, receivers and other sound-generating devices to complete the conversion of electrical energy into sound energy. Generally, as shown in Figure 3, the micro-sounding device includes an auxiliary system 10', a vibration system 20' and a magnetic circuit system 30', and the auxiliary system includes an upper cover 11' and a basin frame 12', an upper cover 11' and a basin The frame 12' forms a storage space, and the vibration system 20' and the magnetic circuit system 30' are accommodated in the cavity; the vibration system 20' is provided with a diaphragm 21', and the general diaphragm 21' is provided with a convex film part 211', The vibration radiation area of this raised diaphragm is small, and its frequency response range is also small, and due to structural reasons, the edge of the diaphragm 21' is bonded to the frame 12', and the frame 12' is provided with a first The step 12a' and the second step 12b', because the volume of the sound-generating device is very small, this double-step structure is easy to be mis-installed when the diaphragm 21' is assembled, and the assembly requirements for parts are very high, which will inevitably affect the micro-sounding device. Overall reliability. Therefore, it is necessary to study a sounding device with a simple and reliable assembly structure and a wide frequency response range.

【Content of utility model】

The purpose of the utility model is to solve the problem that the sounder requires high assembly precision due to its complex internal structure, and propose a miniature electric energy sounding device with a simple structure and easy assembly.

The utility model miniature electric energy sounding device includes an auxiliary system, a vibration system and a magnetic circuit system. The auxiliary system includes an upper cover and a pot frame forming a storage space with the upper cover. The vibration system includes a diaphragm and a voice coil connected with the diaphragm. The vibration system and the magnetic circuit system are accommodated in the accommodation space. The area from the connection between the voice coil and the diaphragm to the edge of the diaphragm is a reverse folding ring that is concave and away from the upper cover. There are positioning steps on the basin frame, and the positioning steps The upper surface overlaps and connects the edge portion of the diaphragm and the edge portion of the upper cover in sequence.

The miniature electric energy sounding device of the utility model is provided with a single positioning step on the basin frame, and the edges of the diaphragm and the upper cover are sequentially overlapped and positioned on the positioning step surface, and the diaphragm is provided with a concave part, which is not only beneficial to expand the frequency response range, Moreover, it is convenient to assemble the diaphragm, and the design of a single positioning step also avoids the occurrence of misinstallation of the diaphragm, making the assembly process of the electric energy sounding device simple, fast and efficient, and reducing costs, and can be widely used in sounding devices with diaphragm elements .

【Description of drawings】

Fig. 1 is the sectional structure schematic diagram of the present utility model;

Fig. 2 is a schematic diagram of the enlarged structure of part A of Fig. 1;

Fig. 3 is a schematic cross-sectional structure diagram of a conventional sound generating device.

【Detailed ways】

Below in conjunction with accompanying drawing, the sounding device of the present utility model is described in detail.

As shown in Figure 2, it is a schematic cross-sectional structure diagram of the utility model; the utility model includes an auxiliary system 10, a vibration system 20 and a magnetic circuit system 30, and the auxiliary system 10 includes an upper cover 11 and a pot frame forming a storage space with the upper cover 11 12. The vibration system 20 includes a diaphragm 21 and a voice coil 22 connected to the diaphragm 21. The magnetic circuit system includes a magnetic frame 33 and a magnetic steel 31 and a pole core 32 contained in the magnetic frame 33. The magnetic steel 31 and the magnetic frame 33 The gap between them is a magnetic gap, the voice coil 22 is suspended in the magnetic gap, and the vibration system 20 and the magnetic circuit system are accommodated in the accommodation space formed by the upper cover 11 and the basin frame 12 .

As shown in Figure 3, which is an enlarged view of part A of Figure 1, a single positioning step 121 is provided on the basin frame 12, the cross section of the positioning step 121 is smaller than the base surface to which it is attached, and the upper surface of the positioning step 121 is connected to the diaphragm 21, the edge of the upper cover 11 is pressed against the edge of the diaphragm 21, and the design of a single positioning step 121 can quickly and conveniently fix the diaphragm 21 and the upper cover 11 on the basin frame 12, without The phenomenon of misinstallation occurs, and because the area from the connection between the diaphragm and the voice coil to the edge of the diaphragm is provided with a concave reflex ring 211, the design of the reflex ring 211 increases the radiation area of the diaphragm 21 and expands the diaphragm 21 frequency response range, and the concave diaphragm part facilitates the installation of the whole diaphragm 21, which not only facilitates the assembly of components, but also reduces the relative cost. The design of the single positioning step 121 also improves the reliability of the overall miniature electric energy sounding device.

The above are only preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above-mentioned embodiments, but any equivalent modification or change made by those of ordinary skill in the art according to the content disclosed in the present utility model, All should be included in the scope of protection described in the claims.

Claims (1)

1, a kind of micro electric sound-producing device, comprise auxiliary system, vibrational system and magnetic circuit system, auxiliary system comprises by loam cake with loam cake forms the basin frame of receiving space, vibrational system comprises vibrating diaphragm and the voice coil loudspeaker voice coil that is connected with vibrating diaphragm, vibrational system and magnetic circuit system are housed in the receiving space, it is characterized in that: be recessed with voice coil loudspeaker voice coil junction to the zone of vibrating diaphragm edge part on the described vibrating diaphragm to reflexed ring away from loam cake, the basin frame is provided with positioning step, the edge part of the overlapping successively connection vibrating diaphragm of positioning step upper surface and the edge part of loam cake.

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