CN201185473Y

CN201185473Y - Miniature moving-coil type electro-acoustic conversion device diaphragm

Info

Publication number: CN201185473Y
Application number: CNU2008200212081U
Authority: CN
Inventors: 刘春发; 宁尚磊
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2008-04-19
Filing date: 2008-04-19
Publication date: 2009-01-21
Anticipated expiration: 2018-04-19

Abstract

The utility model discloses a moving-coil type mini-size electroacoustic transducer diaphragm, which comprises a central part and an edge part, and wherein, the central part is provided with a wrinkled layer. When a mini-size electroacoustic transducer adopting the diaphragm works in high power, the acoustical property is improved, the strength of the diaphragm is enhanced, the reliability of the product is improved, and moreover, the diaphragm has the advantages of simple fabrication technique and low cost.

Description

The miniature moving-coil type electroacoustic transducer vibrating diaphragm

Technical field

The utility model relates to a kind of electroacoustic transducer vibrating diaphragm, especially relates to a kind of miniature moving-coil type electroacoustic transducer vibrating diaphragm.

Background technology

In recent years, develop rapidly along with electronic product markets such as mobile phone, notebook computers, the miniature moving-coil type electroacoustic transducer of cost performance excellence (generally comprising micro-telephone receiver and miniature electro-acoustic transducer) is widely used, as accompanying drawing 5 is a kind of common miniature moving-coil type electroacoustic transducer, its magnetic circuit device is the internal magnetic circuit structure, and voice coil loudspeaker voice coil 11 and vibrating diaphragm 12 are combined the formation vibrational system; Basin frame 14, magnet 15, washer 16 are combined the formation magnetic circuit system; Shell 13 is combined the basic structure that forms moving-coil type electro-acoustic conversing device with vibrational system and magnetic circuit system, and wherein, vibrating diaphragm 12 generally is divided into edge part 121 and central part 122, and voice coil loudspeaker voice coil 11 is bonded in the position, junction of edge part 121 and central part 122.Fig. 6 shows a kind of design of vibrating diaphragm, vibrating diaphragm 12 comprises edge part 121, central part 122 and binding part 123, binding part 123 can be bonded in vibrating diaphragm 12 on the shell or magnetic structure of miniature moving-coil type electroacoustic transducer, and central part 122 is cambered surfaces plane or as Fig. 5.Design is also arranged in order to improve acoustical behavior, some folds are set at the vibrating diaphragm edge part.

But now the miniature electro-acoustic transducer require that power increases, the vibrating diaphragm Oscillation Amplitude is big, vibrating diaphragm is very easy to distortion, causes product hidden danger, and the fold of vibrating diaphragm edge part is provided with and improves very limited to the improvement of product acoustical behavior and the intensity of vibrating diaphragm.So, be necessary the vibrating diaphragm of miniature electro-acoustic transducer is improved.

The utility model content

Technical problem to be solved in the utility model provides a kind of miniature electro-acoustic transducer vibrating diaphragm, the miniature electro-acoustic transducer of using this novel vibrating diaphragm is in high power work, acoustical behavior is improved, vibrating diaphragm intensity improves, and product reliability improves, and manufacturing process is simple, with low cost.

For solving the problems of the technologies described above, the technical solution of the utility model is: the miniature moving-coil type electroacoustic transducer vibrating diaphragm, comprise central part and edge part, and described central part is provided with plicated layer.

As a kind of improvement, described central part and described edge part are the integrative-structure made from a kind of base material.

As a kind of improvement, described central part and described edge part are the branch body structure that bonds together that different substrate materials is made, and described plicated layer is arranged on the described central part and with described edge part and bonds together.

As further improvement, described central part is provided with the base material identical with described edge part, and described plicated layer sticks at least one side surface of described base material.

As a kind of improvement, described plicated layer is the metal plicated layer.

As a kind of improvement, the central part of pasting described plicated layer is a flat shape.

As further improvement, described plicated layer is the plastics plicated layer.

As further improvement, the section of described plicated layer is waveform, rectangle or zigzag.

As further improvement, the fold of described plicated layer distributes linearly or curve distribution.

As further improvement, described vibrating diaphragm base material is the MULTILAYER COMPOSITE base material.

Plicated layer can be distributed in the both sides of vibrating diaphragm base material, it also can be a side, the shape of vibrating diaphragm can be different shapes such as microscler, circle, and fold distribution shape and section configuration also can be other rules or irregularly shaped except preferred different shape.

Owing to adopted technique scheme, the miniature moving-coil type electroacoustic transducer vibrating diaphragm comprises central part and edge part, and central part is provided with plicated layer; The miniature electro-acoustic transducer of using this novel vibrating diaphragm is in high power work, and acoustical behavior is improved, vibrating diaphragm intensity improves, and product reliability improves, and manufacturing process is simple, with low cost.

Description of drawings

Fig. 1 a is the vertical view of the utility model case study on implementation one;

The A-A of Fig. 1 b Fig. 1 a is to the tangent plane schematic diagram;

Fig. 2 is the tangent plane schematic diagram of the utility model case study on implementation two;

Fig. 3 is the tangent plane schematic diagram of the utility model case study on implementation three;

Fig. 4 is the tangent plane schematic diagram of the utility model case study on implementation four;

Fig. 5 is the miniature moving-coil type electroacoustic transducer structural representation of prior art;

Fig. 6 is a kind of miniature moving-coil type electroacoustic transducer vibrating diaphragm vertical view of prior art.

Embodiment

Embodiment one

Shown in Fig. 1 a and Fig. 1 b, the implementation case has been described a kind of miniature moving-coil type electroacoustic transducer vibrating diaphragm 2, the material of vibrating diaphragm 2 uses plastic material, the flat shape squarish, comprise central part 2a and edge part 2b, the external margin 2c of edge part 2b can be bonded in vibrating diaphragm 2 on the miniature moving-coil type electroacoustic transducer.Central part 2a is provided with the plicated layer 2d that strip distributes, and the section of plicated layer 2d is the rectangular curve shape.

This miniature moving-coil type electroacoustic transducer vibrating diaphragm design, vibrating diaphragm is in operational vibration, because the existence of plicated layer, the swept area of central part increases, and acoustic efficiency promotes, and, the mechanical strength of central part increases, be not easy to produce distortion, and can drive the intensity increase of whole vibrating diaphragm, reliability improves.

Embodiment two

As shown in Figure 2, the main distinction of the implementation case and case study on implementation 1 is: the central part 2a of vibrating diaphragm 2 and edge part 2b are that two parts of different materials are formed, edge part 2b adopts the plastic material design, and central part 2a adopts the metallic plate design, and plicated layer 2d is set on metallic plate 2a.The main purpose of this design is that plastic edge portion realizes different acoustic efficiencies with metal center portion, the intensity of vibrating diaphragm further increases, and in the application of this vibrating diaphragm, voice coil loudspeaker voice coil can be bonded in the metal center portion, help distributing of heat, can allow more high power ground work.

Embodiment three

As shown in Figure 3, the main distinction of the implementation case and case study on implementation 2 is that the middle part of vibrating diaphragm 2 is made up of two layers of material, the base material of one deck central part 2a adopts and edge part 2b identical materials, be structure as a whole, and plicated layer 2d sticks on the base material of central part 2a by binding agent 2e, the vibrating diaphragm of this structure is because of the existence of fold, and binding agent 2e remains between plicated layer 2d and the central part 2a base material, bonding dynamics height.

Embodiment four

As shown in Figure 4, the main distinction of the implementation case and case study on implementation 3 is that the other side that vibrating diaphragm 2 is provided with plicated layer 2d is provided with composite bed 2f, and the material of composite bed 2f is different with the vibrating diaphragm base material, thereby reaches different composite membrane acoustic efficiencies.

Claims

1. the miniature moving-coil type electroacoustic transducer vibrating diaphragm comprises central part and edge part, it is characterized in that: described central part is provided with plicated layer.

2. miniature moving-coil type electroacoustic transducer vibrating diaphragm as claimed in claim 1 is characterized in that: described central part and the described edge part integrative-structure for making with a kind of base material.

3. miniature moving-coil type electroacoustic transducer vibrating diaphragm as claimed in claim 1, it is characterized in that: described central part and described edge part are the branch body structure that bonds together that different substrate materials is made, and described plicated layer is arranged on the described central part and with described edge part and bonds together.

4. miniature moving-coil type electroacoustic transducer vibrating diaphragm as claimed in claim 1 is characterized in that: described central part is provided with the base material identical with described edge part, and described plicated layer sticks at least one side surface of described base material.

5. as claim 3 or 4 described miniature moving-coil type electroacoustic transducer vibrating diaphragms, it is characterized in that: described plicated layer is the metal plicated layer.

6. miniature moving-coil type electroacoustic transducer vibrating diaphragm as claimed in claim 5 is characterized in that: the central part of pasting described plicated layer is a flat shape.

7. as claim 3 or 4 described miniature moving-coil type electroacoustic transducer vibrating diaphragms, it is characterized in that: described plicated layer is the plastics plicated layer.

8. as the described miniature moving-coil type electroacoustic transducer vibrating diaphragm of the arbitrary claim of claim 1-4, it is characterized in that: the section of described plicated layer is waveform, rectangle or zigzag.

9. as the described miniature moving-coil type electroacoustic transducer vibrating diaphragm of the arbitrary claim of claim 1-4, it is characterized in that: the fold of described plicated layer distributes linearly or curve distribution.

10. as the described miniature moving-coil type electroacoustic transducer vibrating diaphragm of the arbitrary claim of claim 1-4, it is characterized in that: described vibrating diaphragm base material is the MULTILAYER COMPOSITE base material.