CN103347235A - Sound production device - Google Patents

Abstract

The invention discloses a sound production device which comprises a loudspeaker monomer and a peripheral shell used for containing and fixing the loudspeaker monomer. The loudspeaker monomer comprises a vibrating diaphragm. Spaces on the rear side of the vibrating diaphragm form rear vocal cavities and the rear vocal cavities are composed of the loudspeaker monomer and the peripheral shell together. Moreover, the rear vocal cavities are of sealed structures. A leakage hole is formed in the vibrating diaphragm and communicated with the two sides of the vibrating diaphragm. A leakage hole is of a hole-shaped structure or a slit-shaped structure. Due to the structure, air flows in the rear vocal cavities are balanced, and tone quality is adjusted, so that acoustic performance of the sound production device with the completely sealed rear vocal cavities is improved.

Description

Microphone device

Technical field

The present invention relates to the electroacoustic field, be specifically related to a kind of microphone device.

Background technology

Microphone device comprises loudspeaker monomer and peripheral housing, loudspeaker monomer involving vibrations system, magnetic circuit system, and the protection framework of accommodating fixing described vibrational system and described magnetic circuit system.Vibrational system generally includes vibrating diaphragm and is incorporated into the voice coil loudspeaker voice coil of vibrating diaphragm downside, and magnetic circuit system forms the magnetic gap of accommodating voice coil loudspeaker voice coil.The space of microphone device vibrating diaphragm front side forms the preceding operatic tunes, and the space of vibrating diaphragm rear side forms the back operatic tunes, and the preceding operatic tunes and the back operatic tunes are the structure of isolating mutually.Wherein the back operatic tunes is the space of encircling a city between loudspeaker monomer and the peripheral housing, be provided with corresponding to the position of the back operatic tunes on the casing body outside in the prior art and be communicated with extraneous damping hole, damping hole be mainly used in dispelling the heat and balance after air pressure in the operatic tunes, make the vibrating diaphragm can free vibration.

But microphone device finally is to cooperate end product to use, and its concrete structure need improve at end product.Under the particular case, the back operatic tunes of microphone device is for the structure of sealing, and is unbalanced for the air pressure in the operatic tunes after this structure, influences the vibration of vibrating diaphragm, causes defectives such as Dysacousia easily.Therefore, need provide a kind of new solution, with the acoustical behavior of the microphone device of adjusting the operatic tunes sealing of this back.

Summary of the invention

In order to solve the problems of the technologies described above, the invention provides a kind of microphone device, can balance after air-flow in the operatic tunes, the tonequality of regulating product, thus improve the acoustical behavior of product.

To achieve these goals, the invention provides a kind of microphone device, comprise loudspeaker monomer and accommodate the peripheral housing of fixing described loudspeaker monomer; Described loudspeaker monomer comprises vibrating diaphragm; The space of described vibrating diaphragm rear side constitutes the back operatic tunes, the described back operatic tunes is formed jointly by described loudspeaker monomer and described peripheral housing, and the structure of the described back operatic tunes for sealing, wherein, described vibrating diaphragm is provided with the leak holes that is communicated with the vibrating diaphragm both sides, and described leak holes is poroid or the slit-shaped structure.

In addition, preferred scheme is that described ball top is provided with described leak holes.

In addition, preferred scheme is, described ring portion is provided with described leak holes.

In addition, preferred scheme is, is equipped with described leak holes in described ball top and the described ring portion.

In addition, preferred scheme is that the area of described leak holes is less than 2% of described vibrating diaphragm global vibration area.

In addition, preferred scheme is, the parallel or vertical setting of straight line at the described leak holes of slit-shaped and described ring portion and/or ball top.

In addition, preferred scheme is that the described leak holes of slit-shaped arranges at an angle in the straight line at described ring portion and/or ball top.

In addition, preferred scheme is that the leak holes of poroid or slit-shaped is set on the described vibrating diaphragm simultaneously.

Heat and air pressure in the back operatic tunes of sealing are circulated by the leak holes on the vibrating diaphragm and the external world, thereby make the air-flow in the operatic tunes of back obtain balance, make can moving freely of vibrating diaphragm, and this structure can be regulated tonequality, thereby has improved the acoustical behavior of the microphone device that this back operatic tunes seals fully.

Description of drawings

By present invention is described below in conjunction with accompanying drawing, above-mentioned feature of the present invention and technological merit will become apparent and understand easily.

Fig. 1 is the three-dimensional decomposition texture schematic diagram of loudspeaker monomer of the present invention.

Fig. 2 is the cutaway view of microphone device of the present invention.

Fig. 3 is the present invention arranges a kind of embodiment of leak holes at the ball top structural representation.

Fig. 4 is the present invention arranges a kind of improvement project of leak holes at the ball top structural representation.

Fig. 5 is the present invention arranges a kind of improvement project of leak holes at the ball top structural representation.

Fig. 6 is the structural representation that a kind of embodiment of leak holes is set in the vibrating diaphragm ring of the present invention portion.

Fig. 7 is the structural representation that a kind of improvement project of leak holes is set in the ring of the present invention portion.

Fig. 8 is the structural representation that a kind of improvement project of leak holes is set in the ring of the present invention portion.

Embodiment

Below in conjunction with the drawings and specific embodiments the present invention is done further detailed description.

As depicted in figs. 1 and 2, microphone device comprises loudspeaker monomer and accommodates the fixedlyperipheral housing 5 of loudspeaker monomer.Wherein, the main involving vibrations of loudspeaker monomer system, magnetic circuit system, and the protection framework of accommodating fixing described vibrational system and described magnetic circuit system also comprise the electrical connector 4 that is electrically connected microphone device internal circuit and external circuit.Vibrational system comprises vibrating diaphragm, is incorporated into the voice coil loudspeaker voice coil 24 of vibrating diaphragm downside, and centring disk 23; Centring disk 23 and voice coil loudspeaker voice coil 24 secure bond prevent from voice coil loudspeaker voice coil 24 vibration processes polarization taking place; The present embodiment vibrating diaphragm is made up of two parts, the ball top 22 and thering portion 21 that is positioned at the flexibility of marginal position that comprise the rigidity that is positioned at the center, ball top 22 adopts rigid structures can prevent that the vibrating diaphragm high band from cutting apart vibration, is conducive to improve the acoustical behavior of product.Magnetic circuit system is two magnetic route structure, comprise from top to bottom the washer that is positioned at the center 311 of combination and internal magnet 312 successively, be positioned at the from top to bottom outer washer 321 of combination and the external magnet 322 successively of marginal position, and the magneticconductive board 33 that is positioned at the magnetic conduction of external magnet 322 and internal magnet 312 downsides, described magnetic circuit system forms the magnetic gap of accommodating voice coil loudspeaker voice coil 24, be to form magnetic gap between internal magnetic circuit and the external magnetic circuit, voice coil loudspeaker voice coil 24 is contained in the magnetic gap.Protecgulum 11 is buckled in shell 12 upper sides, protecgulum 11 and the shell 12 common protection frameworks that form loudspeaker monomer.

The microphone device of present embodiment is positive structure of speaking, and comprises the preceding operatic tunes that is positioned at the vibrating diaphragm front side and the back operatic tunes I that is positioned at the vibrating diaphragm rear side, and as shown in Figure 2, the space of present embodiment vibrating diaphragm front side directly is in communication with the outside.Back operatic tunes I is encircled a city jointly by loudspeaker monomer andperipheral housing 5, and operatic tunes I is the structure that seals fully behind the present invention, does not namely have the damping hole in the conventional art.As a kind of improvement, the present invention is provided with leak holes at vibrating diaphragm, and can remedy back operatic tunes I by leak holes does not have damping hole to bring defectives such as Dysacousia.

To shown in Figure 5, be provided with described leak holes at the ball top 22 of vibrating diaphragm as Fig. 3, the shape of leak holes can be poroid or slit-shaped.As shown in Figure 3,leak holes 221a is the slit-shaped structure, is arranged at two bights at ball top 22, and wherein, the conditions such as size, quantity and position of slit-shaped leak holes 221a need be adjusted according to actual conditions, are not limited to schematicstructure.Leak holes 221b shown in Figure 4 is circular cavernous structure, be positioned at the center at ball top, the shape of cavernousstructure leak holes 221b is not limited to schematic structure, also can be other structures such as rectangle or triangle, and the size ofleak holes 221b, quantity and position is not limited to schematicstructure.Leak holes 221c shown in Figure 5 is two kinds of circular cavernous structures that diameter is different, lay respectively at center and four bights at ball top 22, the aperture of thecircular leak holes 221c of center position is greater than the aperture of four cornerpositions leak holes 221c among the embodiment, the size insame leak holes 221c aperture, shape, position, quantity etc. are not limited to schematic structure, should adjust according to actual conditions.In addition, the leak holes on the ball top 22 also can comprise poroid and the slit-shaped structure simultaneously, is not described in detail in this.

To shown in Figure 7, can described leak holes be set as Fig. 6 in thering portion 21 of vibrating diaphragm.The shape of same leak holes can be poroid or slit-shaped structure.As shown in Figure 6,leak holes 211a is arranged on the four edges of rectangle vibratingdiaphragm ring portion 21, and vertical with the straight line at corresponding sides place, is the slit-shaped structure.Theleak holes 211b of structure shown in Figure 7 also is positioned on four straight lines of rectangle vibratingdiaphragm ring portion 21, and direction and limit, place thatleak holes 211b extends be arranged in parallel.Leak holes 211c shown in Figure 8 is arranged on four straight lines ofring portion 21, is circular cavernous structure, and the size in circular leak holes 211c aperture is not limit, and the concrete shape of poroid leak holes 211c is not limit, and needs to adjust according to actual conditions.In addition, need to prove that the shape of above-mentioned leak holes, size, quantity etc. all are not limited to above-described embodiment, can adjust according to actual conditions, and the leak holes of cavernous structure and slit-shaped structure can be carried out combination at random.

In addition, leak holes also can be arranged in ball top 22 and thering portion 21 simultaneously.

Preferably, the area of leak holes of the present invention namely can not cause front and back operatic tunes short circuit less than 2% of vibrating diaphragm global vibration area in this proportion, and the tonequality that can regulate product.Wherein, vibrating diaphragm global vibration area refers to that vibrating diaphragm is at the area perpendicular to the orthographic projection on the plane of its direction of vibration.

The above-mentioned structure that leak holes is set at vibrating diaphragm, heat and air pressure among the back operatic tunes I of sealing are circulated by the leak holes on the vibrating diaphragm and the external world, thereby make the air-flow among the operatic tunes I of back obtain balance, make can moving freely of vibrating diaphragm, and this structure can be regulated tonequality, thereby has improved the acoustical behavior of the microphone device that this back operatic tunes I seals fully.

Under above-mentioned instruction of the present invention; those skilled in the art can be in his improvement of the basic enterprising Xingqi of above-described embodiment and distortion; and these improvement and distortion; all drop in protection scope of the present invention; those skilled in the art should be understood that; above-mentioned specific descriptions are just better explained purpose of the present invention, and protection scope of the present invention is limited by claim and equivalent thereof.

Claims (8)

1. a microphone device comprises loudspeaker monomer and accommodates the peripheral housing of fixing described loudspeaker monomer; Described loudspeaker monomer comprises vibrating diaphragm; The space of described vibrating diaphragm rear side constitutes the back operatic tunes, and the described back operatic tunes is formed jointly by described loudspeaker monomer and described peripheral housing, and the operatic tunes is characterized in that for the structure of sealing after described,

Described vibrating diaphragm is provided with the leak holes that is communicated with the vibrating diaphragm both sides, and described leak holes is poroid or the slit-shaped structure.

2. microphone device according to claim 1 is characterized in that, described ball top is provided with described leak holes.

3. microphone device according to claim 1 is characterized in that, described ring portion is provided with described leak holes.

4. microphone device according to claim 1 is characterized in that, is equipped with described leak holes in described ball top and the described ring portion.

5. according to the described microphone device of the arbitrary claim of claim 1 to 4, it is characterized in that the area of described leak holes is less than 2% of described vibrating diaphragm global vibration area.

6. microphone device according to claim 5 is characterized in that, the parallel or vertical setting of straight line at the described leak holes of slit-shaped and described ring portion and/or ball top.

7. microphone device according to claim 5 is characterized in that, the described leak holes of slit-shaped arranges at an angle in the straight line at described ring portion and/or ball top.

8. microphone device according to claim 5 is characterized in that, the leak holes of poroid or slit-shaped is set on the described vibrating diaphragm simultaneously.

Images