CN201278583Y

CN201278583Y - Resonance sounding body

Info

Publication number: CN201278583Y
Application number: CNU200820201938XU
Authority: CN
Inventors: 王广林
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-10-16
Filing date: 2008-10-16
Publication date: 2009-07-22
Anticipated expiration: 2018-10-16

Abstract

The utility model discloses a resonance sounding body which belongs to the technical field of sound-producing devices and comprises a casing, a support member arranged in the casing, a permanent-magnet fixed in the support member, a voice coil bracket arranged at the periphery of the permanent-magnet, and a drive voice coil which is provided with an audio signal input end and is circled on the voice coil bracket, wherein the lower end of the voice coil bracket is fixedly connected with a vibrating body end closure, a first elastic body is arranged between the permanent-magnet and the vibrating body end closure, a second elastic body is arranged between the casing and the support member, and an AC signal input to the drive voice coil enables the voice coil bracket to axially vibrate corresponding to the permanent-magnet. The utility model has the advantages of simple structure, small volume, wide range and convenient manufacture and assembly, thereby being used for converting sound energy to vibrational energy to resonate and produce sound with a sound board.

Description

The resonance sounding body

Technical field

The utility model relates to a kind of sound-producing device, and more particularly, it relates to a kind of resonance sounding body.

Background technology

Traditional sounding body mainly is loudspeaker, sounds by the vibrating basin vibration; Along with science and technology development, the acoustic transducer of magnetostrictive material manufacturing has appearred utilizing, by rigid of transmission mechanism vibrational energy is delivered on the tabular sounding body (as desktop, glass, cabinet door-plate etc.), thereby phonation board is sounded, utilize this technology can make flat panel speaker, as Chinese patent application CN03102553.6 (publication number CN1521934, an open day 2004.08.18) disclosed " a kind of vibratory driver power Output Optimization method; equipment and the product that makes of method thus ", its disclosed product is exactly with the big magnetostriction rod, coil, the permanent magnetism sheet, bobbin is combined in the housing, go out vibration source by T type rod guidance, thereby drive the sheet material sounding.Chinese patent ZL200620108620.8 (publication number CN2935690 and for example, open day 2007.08.15) concrete structure of disclosed a kind of " attached audio energy converter ", be that big magnetostriction driving element, coil, bobbin, permanent magnetism sheet and upper and lower top cap are combined in the body, by weight formula, sucked type and fixed, thereby sound attached on the pronunciation board; More than two technical schemes all are the sounding bodies that utilize the characteristic of magnetostrictive material to make, different fully with the structure of traditional loudspeaker, be to make changes of magnetic field by change in electric with sound, it is flexible that magnetic materials is taken place, be transformed into mechanical oscillation signal, thereby drive dull and stereotyped sounding; But all there is complex structure in above-mentioned technical scheme, uses deficiency easily is installed inadequately, and its production cost is higher.

The utility model content

The technical problems to be solved in the utility model is the above-mentioned deficiency at prior art, provide a kind of simple in structure, volume is little, range is broad, make resonance sounding body easy to assembly.

The technical solution of the utility model is such: a kind of resonance sounding body, comprise shell, in the enclosure be provided with supporting member, at the supporting member internal fixation permanent magnet is arranged, be provided with voice coil suspension in the permanent magnet periphery, on voice coil suspension, be wound with the driving voice coil loudspeaker voice coil of band audio signal input end, wherein, fixedly connected with the vibrating body end cap in described voice coil suspension lower end, between permanent magnet and vibrating body end cap, be provided with first elastomer, be provided with second elastomer between shell and supporting member, the ac signal that input drives voice coil loudspeaker voice coil can make the relative permanent magnet of voice coil suspension produce axial vibration.

In the above-mentioned resonance sounding body, be provided with the 3rd elastomer between described vibrating body end cap and the shell, be used for limiting the lateral shift of vibrating body end cap, improve the stability of vibration.

In the above-mentioned resonance sounding body, described supporting member is that cross sectional shape is the chapeau de fer of U-shaped, and permanent magnet is fixed in the supporting member.

In the above-mentioned resonance sounding body, described permanent magnet is made up of upper magnet, lower magnet and dividing plate, and upper magnet and lower magnet are separately fixed at the dividing plate both sides, and the homopolarity of upper magnet and lower magnet is relative.

In the above-mentioned resonance sounding body, described vibrating body end cap bottom also is provided with vibration transmission rod, is provided with base in the vibration transmission rod lower end.

In the above-mentioned resonance sounding body, described first elastomer, second elastomer and the 3rd elastomer are heat-resisting silicon rubber loop, convenient like this installation and processing.

After the utility model adopts said structure, be to utilize to driving the voice coil loudspeaker voice coil input audio signal, thereby make the voice coil suspension generation axial vibration that is arranged in magnetic field of permanent magnet, thereby the signal of telecommunication is transformed into mechanical oscillation, by the vibrating body end cap vibration signal is passed to flat board again, flat board is sounded, have advantage simple in structure, that volume is little, range is broad, manufacturing is easy to assembly, can be the acoustic energy conversion a kind of new technical scheme is provided; The utility model can make the relative magnetic circuit of voice coil loudspeaker voice coil do range by three elastomer location voice coil loudspeaker voice coil vibrations, and the elasticity physical efficiency is effectively eliminated the covibration of product casing simultaneously.

Description of drawings

Below in conjunction with the embodiment in the accompanying drawing the utility model is described in further detail, but does not constitute any restriction of the present utility model.

Fig. 1 is the structural representation of the utility model specific embodiment 1;

Fig. 2 is the structural representation of the utility model specific embodiment 2;

Fig. 3 is the structural representation of the utility model specific embodiment 3.

Among the figure: shell 1, supporting member 2, permanent magnet 3, upper magnet 3a, lower magnet 3b, dividing plate 3c, voice coil suspension 4, driving voice coil loudspeaker voice coil 5, vibrating body end cap 6, first elastomer 7, second elastomer 8, the 3rd elastomer 9, vibration transmission rod 10, base 11, phonation board 12.

Embodiment

Embodiment 1

Consult shown in Figure 1ly, resonance sounding body of the present utility model comprises shell 1, and housing 1 cross sectional shape is a U-shaped, is provided with supporting member 2 in shell 1, and supporting member 2 all is placed in the shell 1 for cross sectional shape is the chapeau de fer of U-shaped; At supporting member 2 internal fixation permanent magnet 3 is arranged, be provided with voice coil suspension 4 in permanent magnet 3 peripheries, be wound with the driving voice coil loudspeaker voice coil 5 of band audio signal input end on voice coil suspension 4, audio signal input end is used for to driving the voice coil loudspeaker voice coil 5 sound import signals of telecommunication; Fixedly connected with vibrating body end cap 6 in voice coil suspension 4 lower ends, between permanent magnet 3 and vibrating body end cap 6, be provided with first elastomer 7, between shell 1 and supporting member 2, be provided with second elastomer 8, between vibrating body end cap 6 and shell 1, be provided with the 3rd elastomer 9, the ac signal that input drives voice coil loudspeaker voice coil 5 can make voice coil suspension 4 relative permanent magnets 3 produce axial vibration, thereby the sound signal of telecommunication is transformed into vibration signal.Permanent magnet 3 in the present embodiment is made up of upper magnet 3a, lower magnet 3b and dividing plate 3c, upper magnet 3a and lower magnet 3b are separately fixed at dividing plate 3c both sides, and upper magnet 3a is relative with the homopolarity of lower magnet 3b, the magnetic Circuit Design of this positive and negative mangneto high magnetic flux density, can make magnetic circuit have high magnetic flux density at A point place, from but drive voice coil loudspeaker voice coil 5 and obtain more vibratory drive power.The utility model is located by first elastomer 7, second elastomer 8 and the 3rd elastomer 9 and is driven voice coil loudspeaker voice coil 5 vibrations, can make driving voice coil loudspeaker voice coil 5 relative magnetic circuits do range, the elasticity physical efficiency is effectively eliminated the covibration of product casing simultaneously, effectively avoids noise, improves tonequality.First elastomer 7, second elastomer 8 and the 3rd elastomer 9 in the present embodiment are heat-resisting silicon rubber loop, can guarantee normal use.

When the utility model specifically uses, consult shown in Figure 1, vibrating body end cap 6 of the present utility model is placed on the phonation board 12 (can produce all plate bodys of resonance), then by audio signal input end to driving the voice coil loudspeaker voice coil 5 sound import signals of telecommunication, the voice coil suspension 4 that is positioned at permanent magnet 3 magnetic fields like this will produce vibration along with the voice signal of input, the signal of telecommunication is transformed into vibration signal, pass to phonation board 12 by vibrating body end cap 6, thereby make phonation board 12 send sound with the input audio signal unanimity, its key is to utilize vibrating body end cap 6 transmitter shafts to vibration signal, effectively prevent bounce-back and displacement to integral body, thereby guarantee the accurate transmission of vibration signal, avoid distorted signals.

Embodiment 2

Consult shown in Figure 2, resonance sounding body of the present utility model, substantially the same manner as Example 1, different is that housing 1 is flat, the top is provided with the through hole that can hold supporting member 2, thereby inwhole supporting member 2, the three elastomers 9 that coat of shell 1 also are arranged between supporting member 2 peripheries and the shell 1, thereby can reduce the whole height of sounding body, reach effect the sounding body miniaturization; Sounding is by vibrating body end cap 6 vibration signal to be passed to phonation board equally.

Embodiment 3

Consult shown in Figure 3, resonance sounding body of the present utility model, substantially the same manner as Example 1, different is also to be connected with vibration transmission rod 10 in vibrating body end cap 6 bottoms, and be provided with base 11 in vibration transmission rod 10 lower ends, and sounding to be vibrating body end cap 6 drive bases 111 vibrations by vibration transmission rod 10, thereby vibration signal is passed to the phonation board sounding; This structure can realize more variation in moulding of product, and with the supporting use of different decorative shells.

Claims

1. resonance sounding body, comprise shell (1), in shell (1), be provided with supporting member (2), at supporting member (2) internal fixation permanent magnet (3) is arranged, be provided with voice coil suspension (4) in permanent magnet (3) periphery, on voice coil suspension (4), be wound with the driving voice coil loudspeaker voice coil (5) of band audio signal input end, it is characterized in that, fixedly connected with vibrating body end cap (6) in described voice coil suspension (4) lower end, between permanent magnet (3) and vibrating body end cap (6), be provided with first elastomer (7), be provided with second elastomer (8) between shell (1) and supporting member (2), the ac signal that input drives voice coil loudspeaker voice coil (5) can make voice coil suspension (4) permanent magnet (3) generation axial vibration relatively.

2. resonance sounding body according to claim 1 is characterized in that, is provided with the 3rd elastomer (9) between described vibrating body end cap (6) and the shell (1).

3. resonance sounding body according to claim 1 is characterized in that, described supporting member (2) is the chapeau de fer of U-shaped for cross sectional shape, and permanent magnet (3) is fixed in the supporting member (2).

4. according to claim 1 or 3 described resonance sounding bodies, it is characterized in that, described permanent magnet (3) is made up of upper magnet (3a), lower magnet (3b) and dividing plate (3c), upper magnet (3a) and lower magnet (3b) are separately fixed at dividing plate (3c) both sides, and upper magnet (3a) is relative with the homopolarity of lower magnet (3b).

5. resonance sounding body according to claim 1 is characterized in that, described vibrating body end cap (6) bottom also is provided with vibration transmission rod (10), is provided with base (11) in vibration transmission rod (10) lower end.

6. resonance sounding body according to claim 1 is characterized in that, described first elastomer (7), second elastomer (8) are heat-resisting silicon rubber loop.

7. resonance sounding body according to claim 2 is characterized in that, described the 3rd elastomer (9) is heat-resisting silicon rubber loop.