CN203446009U - Multimedia sound box - Google Patents

Abstract

The utility model discloses a multimedia sound box, comprising a magnetic loop assembly, a vibration assembly connected with the magnetic loop assembly in a sleeve manner, and a vibration load resilient disc fixedly connected with the magnetic loop assembly. The vibration load resilient disc comprises an outer fixing ring, an inner fixing ring fixedly connected with the magnetic loop assembly and a bending section arranged between the outer fixing ring and the inner fixing ring. According to the multimedia sound box, a loudspeaker is fixed by the vibration load resilient disc, the vibration load resilient disc has elasticity, thereby the sound quality of the loudspeaker is improved through the elasticity, and low stress effect is specially improved without increasing the size of the sound box. The multimedia sound box can be used for various multimedia sound equipment systems and is specially suitable for portable and mobile sound equipment systems such as a bluetooth sound box available by wireless communication.

Description

A kind of multimedia loudspeaker box

Technical field

The utility model relates to a kind of loudspeaker box structure, more particularly refers to a kind of multimedia loudspeaker box, and it utilizes the weight of loud speaker itself to produce better tonequality.

Background technology

In prior art, audio amplifier, in order to reach better acoustical quality, all will strengthen the size of audio amplifier, and especially low stress need to strengthen the weight of vibration component and improve tonequality.

Yet increasing vibration component, can cause the increase of audio amplifier overall dimensions.This carries very inconvenient for the people who likes mobile digital life.

Therefore, be necessary to improve loudspeaker box structure, to improve tonequality.

Utility model content

The purpose of this utility model is to overcome the defect of prior art, and a kind of multimedia loudspeaker box is provided.

For achieving the above object, the utility model is by the following technical solutions:

A kind of multimedia loudspeaker box, comprise that magnetic returns assembly and returns with magnetic the vibration component that assembly connects together, also comprise with magnetic and return the oscillating load resilient disc that assembly is fixedly connected, described oscillating load resilient disc comprises outer retainer plate, returns with magnetic the interior retainer plate that assembly is fixedly connected, and is located at the bend between outer retainer plate, interior retainer plate.

Its further technical scheme is: described magnetic returns assembly and comprises basin frame and be located at the magnet assemblies in basin frame; Described basin frame is also provided with terminal base, and described basin frame and interior retainer plate are fixedly connected, and also comprise the packing ring for be fixedly connected basin frame and interior retainer plate.

Its further technical scheme is: described magnet assemblies comprises lower gasket, lower magnet, Upper gasket and the upper magnet of setting up successively.

Its further technical scheme is: the centring disk that described vibration component comprises voice coil loudspeaker voice coil, be fixedly connected with voice coil loudspeaker voice coil, be located at the bulging paper in centring disk outside and be located at the dust cap at Gu Zhi center; Described voice coil loudspeaker voice coil is sheathed on magnet assemblies periphery.

Its further technical scheme is: described oscillating load resilient disc is the acrylonitrile-butadiene rubber part with cotton scrim layer.

Its further technical scheme is: the bend of described oscillating load resilient disc is circular arc.

Its further technical scheme is: described bend comprises at least two adjacent circular arcs.

Its further technical scheme is: described bend is character form structure for it.

Its further technical scheme is: also comprise the housing being fixedly connected with oscillating load resilient disc.

The utility model beneficial effect is compared with prior art: the utility model utilizes oscillating load resilient disc to fix loud speaker, because oscillating load resilient disc has elasticity, when loud speaker pronounces, can utilize this elasticity, increases acoustical quality; Especially low stress effect, and do not need to increase the contour structures of audio amplifier.Can be used in various multimedia audio systems, be particularly suitable for portable, mobile audio system; Baffle Box of Bluetooth such as wireless telecommunications realization.

Below in conjunction with the drawings and specific embodiments, the utility model is further described.

Accompanying drawing explanation

Fig. 1 is the three-dimensional exploded view of a kind of multimedia loudspeaker box specific embodiment of the utility model;

Figure 1A is the sectional structure chart of the oscillating load resilient disc in Fig. 1 embodiment;

Fig. 2 is the sectional structure chart (U-shaped iron and basin frame are fixedly connected as a whole, adopt same hatching) that the magnetic in Fig. 1 embodiment returns assembly;

Fig. 3 is the sectional structure chart of the vibration component in Fig. 1 embodiment;

Fig. 4 is the loud speaker sectional structure chart (comprising that magnetic returns assembly and vibration component) in Fig. 1 embodiment;

Fig. 5 is sectional structure chart embodiment illustrated in fig. 1;

Fig. 6 a is equivalent circuit diagram (a) part of the oscillating load resilient disc in embodiment illustrated in fig. 1;

Fig. 6 b is equivalent circuit diagram (b) part of the oscillating load resilient disc in embodiment illustrated in fig. 1;

Fig. 6 c is equivalent circuit diagram (c) part of the oscillating load resilient disc in embodiment illustrated in fig. 1;

Fig. 7 is the curve chart of the low audio characteristic in embodiment illustrated in fig. 1.

Reference numeral

10 magnetic return assembly 11 basin framves

12 magnet assemblies 121 lower gaskets

122 lower magnet 123 Upper gaskets

Magnet 18 packing rings on 124

19 terminal base 24 dust caps

20 vibration component 21 voice coil loudspeaker voice coils

22 centring disk 23 drum paper

231 rubber edge 232 trunks

The outer retainer plate of 30 oscillating load resilient disc 31

32 interior retainer plate 33 bends

111 U-shaped iron

Embodiment

In order to more fully understand technology contents of the present utility model, below in conjunction with specific embodiment, the technical solution of the utility model is further introduced and explanation, but be not limited to this.

As shown in Fig. 1-Fig. 7, a kind of multimedia loudspeaker box of the utility model, comprise that magnetic returns assembly 10 and returns with magnetic the two formation loud speaker of vibration component 20(that assembly 10 connects together), also comprise with magnetic and return the oscillating load resilient disc 30 that assembly 10 is fixedly connected, oscillating load resilient disc 30 comprises outer retainer plate 31, returns with magnetic the interior retainer plate 32 that assembly is fixedly connected, and is located at the bend 33 between outer retainer plate 31, interior retainer plate 32.

Magnetic returns assembly 10 and comprises basin frame 11 and be located at the magnet assemblies 12 in basin frame 11; Basin frame 11 is also provided with terminal base 19, and basin frame 11 is fixedly connected with interior retainer plate 32, also comprises the packing ring 18 for be fixedly connected basin frame 11 and interior retainer plate 32.

Magnet assemblies 12 comprises lower gasket 121, lower magnet 122, Upper gasket 123 and the upper magnet 124 of setting up successively.In the bottom of magnet assemblies, be also provided with a U-shaped iron 111, the base of this U-shaped iron and basin frame be fixedly connected (basin frame is cavity structure, and U-shaped iron plays the effect of fixed magnet assembly).

The centring disk 22(that vibration component 20 comprises voice coil loudspeaker voice coil 21, be fixedly connected with voice coil loudspeaker voice coil 21 be called again play ripple), be located at the bulging paper 23 in centring disk 22 outsides and be located at the dust cap 24 at Gu Zhi 23 centers; Voice coil loudspeaker voice coil is sheathed on magnet assemblies periphery.

In the present embodiment, oscillating load resilient disc 30 is preferably with the acrylonitrile-butadiene rubber part of cotton scrim layer, and the bend 33 of oscillating load resilient disc is circular arc.

Also comprise the housing (not shown) being fixedly connected with oscillating load resilient disc.

Equivalent circuit diagram as shown in Fig. 6 a-Fig. 6 c can be known, the vibrational system of low audio frequency range loud speaker can be suspended on a model on spring by a quality and represent.At this moment resonance frequency is called the low-frequency resonance rate f of loud speaker ₀, can be expressed as follows:

${\mathrm{<figure-callout\; id="0"\; label="f"\; filenames="DEST\_PATH\_HDA0000435620610000011.png,DEST\_PATH\_HDA0000435620610000071.png"\; state="\{\{state\}\}">f</figure-callout>}}_0=\frac{1}{2\mathrm{\&pi;}}\sqrt{\frac{s_0}{m_0}}\left(\mathrm{Hz}\right)$

In formula, m0 (=mv+md+2mad) represents equivalent mass, and So is sectional area.

Speaker combination principle:

Rubber edge 231 is combined into bulging paper 23 with trunk 232, and drum paper serves as the vibrating mass that promotes air volume in speaker system, drum paper shape determined to promote volume of air number and the generation frequency range of sound.

Magnetic returns assembly and provides support and power in whole loud speaker, and it is the part of loud speaker core.

Vibration component rises in loud speaker has an effect and promotes air vibration.The size of volume of air has determined the size of sound, and the shape of drum paper has affected the frequency range of tonequality, and effectively oscillating mass has determined the convulsion force of tonequality.

By vibration component and magnetic, return assembly and formed a complete speaker system.Loud speaker has formed the sound generating apparatus of a core in the utility model.The quality of full range tonequality is directly relevant to native system.Because native system adopts special voice coil loudspeaker voice coil winding mode, increased the size of F (magnetic field force), thereby also directly improved the size of SPL (sensitivity).

The T/S parameter of loud speaker is calculated through electroacoustical analogy software, selects suitable oscillating load resilient disc and packing ring to form the generation systems of an audio amplifier, by this system, can make audio amplifier have powerful bass and graceful medium-high frequency tonequality.

In the sound pressure characteristic of cone loudspeaker, low audio frequency characteristics is by f ₀and quality factor q ₀determine Q ₀for:

2πf _om _o

The curve of this formula as shown in Figure 7.Loud speaker in a low voice band characteristic is with f ₀for line of demarcation, when frequency is lower than f ₀time, acoustic pressure sharply declines, when frequency is higher than f ₀time, there is constant sound pressure characteristic.Therefore claim f ₀low audio frequency lower frequency limit for loud speaker.At f ₀the characteristic at place is again according to Q ₀numerical value and determining.Work as Q ₀, can obtain level and smooth characteristic at=1 o'clock.Work as Q ₀during > 1, f ₀there is a peak value in place.Work as Q ₀during < 1, f ₀place's acoustic pressure declines, and has from frequency ratio f ₀the characteristic that eminence declines.A in formula effectively vibrates area, r _ofor the radius on drum trimming, Rv is the radius of drum paper.

To Q ₀control be to be relatively easy to, the simplest method is the quality that changes vibrational system.If quality alleviates, Q ₀diminish, if quality increasing, Q ₀become large.The utility model has well utilized the weight of loud speaker itself as additional mass, and also follows variation according to the effective oscillating mass of the variation of music, thereby controls the pronunciation law of music, reaches loud speaker and musical sound combines together.This structure has promoted the revolutionary variation of Baffle Box of Bluetooth, from acoustics, has successfully used the perfect adaptation of dynamics, air fluid mechanics, has promoted the technological innovation of audio amplifier industry.From industry, reduced cost, strengthened the market competitiveness.

In other embodiment, bend can be at least two adjacent circular arcs.

In other embodiment, bend can be also zigzag structure.

In other embodiment, oscillating load resilient disc also can adopt other elastomeric material.

In sum, the utility model utilizes oscillating load resilient disc to fix loud speaker, because oscillating load resilient disc has elasticity, when loud speaker pronounces, can utilize this elasticity, increases acoustical quality; Especially low stress effect, and do not need to increase the contour structures of audio amplifier.Can be used in various multimedia audio systems, be particularly suitable for portable, mobile audio system; Baffle Box of Bluetooth such as wireless telecommunications realization.

Above-mentionedly only with embodiment, further illustrate technology contents of the present utility model; so that reader is easier to understand; but do not represent that execution mode of the present utility model only limits to this, any technology of doing according to the utility model is extended or recreation, is all subject to protection of the present utility model.Protection range of the present utility model is as the criterion with claims.

Claims (9)

1. a multimedia loudspeaker box, comprise that magnetic returns assembly and returns with magnetic the vibration component that assembly connects together, characterized by further comprising with magnetic and return the oscillating load resilient disc that assembly is fixedly connected, described oscillating load resilient disc comprises outer retainer plate, returns with magnetic the interior retainer plate that assembly is fixedly connected, and is located at the bend between outer retainer plate, interior retainer plate.

2. a kind of multimedia loudspeaker box according to claim 1, is characterized in that described magnetic returns assembly and comprises basin frame and be located at the magnet assemblies in basin frame; Described basin frame is also provided with terminal base, and described basin frame and interior retainer plate are fixedly connected, and also comprise the packing ring for be fixedly connected basin frame and interior retainer plate.

3. a kind of multimedia loudspeaker box according to claim 2, is characterized in that described magnet assemblies comprises lower gasket, lower magnet, Upper gasket and the upper magnet of setting up successively.

4. a kind of multimedia loudspeaker box according to claim 2, is characterized in that centring disk that described vibration component comprises voice coil loudspeaker voice coil, is fixedly connected with voice coil loudspeaker voice coil, is located at the bulging paper in centring disk outside and is located at the dust cap at Gu Zhi center; Described voice coil loudspeaker voice coil is sheathed on magnet assemblies periphery.

5. a kind of multimedia loudspeaker box according to claim 1, is characterized in that described oscillating load resilient disc is for the acrylonitrile-butadiene rubber part with cotton scrim layer.

6. a kind of multimedia loudspeaker box according to claim 1, the bend that it is characterized in that described oscillating load resilient disc is circular arc.

7. a kind of multimedia loudspeaker box according to claim 2, is characterized in that described bend comprises at least two adjacent circular arcs.

8. a kind of multimedia loudspeaker box according to claim 1, is characterized in that described bend character form structure for it.

9. a kind of multimedia loudspeaker box according to claim 1, characterized by further comprising the housing being fixedly connected with oscillating load resilient disc.

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