CN200950659Y

CN200950659Y - Loudspeakers for improving low frequency acoustic quality

Info

Publication number: CN200950659Y
Application number: CN 200620136698
Authority: CN
Inventors: 李秉彧
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-09-22
Filing date: 2006-09-22
Publication date: 2007-09-19
Anticipated expiration: 2016-09-22

Abstract

This utility model discloses an improved low frequency sound speaker. The speaker includes a bracket, a yoke and a bottom opening, of which a central concave part is tabled at the bracket body; the center of the yoke can contain a magnet. A central through barrel shaped wire rack is wound with a sound coil around the circumference to enable the wire rack to extend to the side of the magnet. An elastic wave is invaginated by means of a central engrave part and combined with the middle section circumference of the wire rack; the circumference of the central engrave of the elastic wave is provided with a plural wave-shaped arc surface that extends externally, which enables the circumference of the elastic wave to combine with bottom circumference of the bracket body downwards; a vibration plate is a expending opening of the circumference combining with the bracket body, while the center of the vibration plate can be combined with the top of the wire rack; the inner diameter of the bracket body is close and less than the inner diameter of the expending opening. The integral sound frequency response of the speaker of the utility model is more uniform to effectively promote the integral sound quality of horn.

Description

A kind of loud speaker that improves low frequency tonequality

Technical field

The utility model belongs to loud speaker, is specifically related to a kind of loud speaker that improves low frequency tonequality.

Background technology

The basic structure of existing loudspeaker (loud speaker) is: as Fig. 1, shown in 2, it is an internal magnetization horn structure, mainly be by a rack body 7, one yoke 2, one magnetite 3, one voice coil loudspeaker voice coil 4, an one bullet ripple 50 and an oscillating plate 6 are formed, wherein this rack body 7 slightly is an inverted cone shape, be provided with an expansion opening 71 in its top side, in the expansion opening 71 then is a recessed bottom surface of contracting 72, be provided with a bottom opening 73 in these bottom surface 72 central authorities, then be provided with a terminal board 74 in these rack body 7 peripheries, the top side of yoke 2 is provided with the accommodation space 21 of a tool opening, make this yoke 2 can be embedded in the bottom opening 73 of rack body 7, and its accommodation space 21 is communicated with formation one in the rack body 7, magnetite 3 is the accommodation space 21 interior central authorities that place this yoke 2, be provided with a pad 31 in its top side, voice coil loudspeaker voice coil 4 is to be wound in a coil holder 41 peripheries, and lead that can two extractions extends to the terminal board 74 of rack body 7, in this coil holder 41, be provided with a medium pore 42, can be sleeved on magnetite 3 peripheries, playing ripple 50 is to be the protruding shape that sticks up of central authorities, its central authorities are provided with a central hollow-out parts 501, and outwards being provided with plural wavy arc in these central authorities' hollow-out parts 501 peripheries extends, make this bullet ripple 50 central hollow-out parts 501 be inserted in and to be incorporated into coil holder 41 stage casing peripheries, these bullet ripple 50 peripheries then can be incorporated into bottom surface 72 peripheries of rack body 7 downwards, oscillating plate 6 peripheries system utilizes a ring-type pressure ring 62 to be pressed on the expansion opening 71 of rack body 7, and be provided with a central hollow-out parts 63 in oscillating plate 6 central authorities, can be for being inserted in and being incorporated into coil holder 41 top side peripheries, and on this central authorities' hollow-out parts 63, can fall in this coil holder 41 to prevent foreign matter in conjunction with the dust cover 61 of a covering; Said structure audio signal electric current when action can produce electromagnetic force via lead to voice coil loudspeaker voice coil 4 by terminal board 74, the magnetic generation reciprocation of this electromagnetic force and magnetite 3, and can make this voice coil loudspeaker voice coil 4 produce slide displacement with respect to magnetic 3, at this moment, but the coil holder 41 interlock oscillating plates 6 of voice coil loudspeaker voice coil 4, bullet ripple 50 form vibration, use the generation sounding effect, above-mentioned oscillating plate 6 main systems produce the sound of middle and high frequency part, play the sound effect that ripple 50 then can be strengthened the low frequency part.

Other has loudspeaker (loud speaker) structure as shown in Figure 3, it is an external magnetic type horn structure, the difference main with aforementioned internal magnetization horn structure is to be: its annular magnetite 30 is to be an annular, can be sleeved on periphery outside the coil holder 41, this yoke 20 then is provided with a central spud 201 in central authorities, can convexedly stretch in the medium pore 42 of coil holder 41; Thus, the extension radius of this coil holder 41 (voice coil loudspeaker voice coil 4) can effectively dwindle, and the effective area that plays ripple 50 is increased, cause its on the whole the aforementioned internal magnetization horn structure of tool compare, have preferable low frequency reaction, but the high frequency reaction is then relatively poor.

Above-mentioned two kinds of loudspeaker, because this rack body 7 has less bottom surface 72 areas, therefore, its area that plays ripple 50 is difficult for effectively expansion, cause its low frequency reaction to be difficult to that satisfactory performance is arranged, especially internal magnetization horn structure is subject to the area that plays ripple 50 especially and equilibrium that have a strong impact on low frequency shows.

Summary of the invention

The purpose of this utility model is to provide a kind of loud speaker that improves low frequency tonequality, to address the above problem.

The technical solution of the utility model is: the loud speaker that improves low frequency tonequality, it comprises support, be provided with the accommodation space of side tool expansion opening in the rack body, central authorities are provided with a bottom opening in the bottom surface of this accommodation space, the position that one yoke contracts with its central fovea is embedded in the bottom opening of rack body, and central authorities can be ccontaining in conjunction with a magnetite in this yoke, the tubular coil holder periphery of one central authorities perforation twines voice coil loudspeaker voice coil, and make this coil holder extensible in the side of magnetite, this coil holder stage casing periphery is inserted in and is incorporated into to the centre hollow-out parts among one bullet ripple was preset with central authorities, this bullet ripple is provided with plural wavy cambered surface in central hollow-out parts periphery and stretches out, and make this bullet ripple periphery then can be incorporated into the bottom surface periphery of rack body downwards, one oscillating plate is the expansion opening that is incorporated into rack body with periphery, and the centre then can be incorporated into the coil holder top side among this oscillating plate; The bottom surface internal diameter system of described rack body near and less than footpath within its expansion opening.

Loud speaker of the present utility model effectively improves the situation of traditional low frequency performance deficiency, makes the frequency response of whole sounding more even, with the voice quality of effective lifting horn integral.The loudspeaker structure of magnetic or external magnetic type in it can be applicable to simultaneously, the scope of application extensively and not can increase use cost.

Description of drawings

The structure decomposition map of the existing internal magnetization horn structure of Fig. 1.

The plane assembled sectional view of the existing internal magnetization horn structure of Fig. 2.

The plane assembled sectional view of the existing external magnetic type horn structure of Fig. 3.

Fig. 4 the utility model internal magnetization horn structure structure decomposition map.

The combination appearance figure of Fig. 5 Fig. 4.

The combined planar cutaway view of Fig. 6 Fig. 4.

Fig. 7 the utility model external magnetic type horn structure section plan.

Embodiment

As shown in Figure 1, 2, 3, be the various basic structures of existing loudspeaker (loud speaker), its main composition and existing problems, as previously mentioned, repeated description no longer herein.

As shown in Figure 4, the utility model mainly comprises: rack body 1, yoke 2, magnetic 3, voice coil loudspeaker voice coil 4, bullet ripple 5 and oscillating plate 6 etc. are partly; Wherein rack body 1 slightly is a straight-tube shape, its top side is provided with an expansion opening 11, be provided with a bottom surface 12 in the expansion opening 11, and should extend to expansion opening 11 by bottom surface 12 and have a deflection expansion less than 5 degree, 12 central authorities are provided with a bottom opening 13 and in the bottom surface, then be provided with a terminal board 14 in this rack body 1 periphery, the top side of yoke 2 is provided with the accommodation space 21 of a tool opening, make this yoke 2 can be embedded in the bottom opening 13 of rack body 1, and this accommodation space 21 is communicated with formation one in the rack body 1, magnetite 3 is the accommodation space 21 interior central authorities that place this yoke 2, be provided with a pad 31 in its top side, voice coil loudspeaker voice coil 4 is to be wound in a coil holder 41 peripheries, and lead that can two extractions extends to the terminal board 14 of rack body 1, in this coil holder 41, be provided with a medium pore 42, can be sleeved on magnetite 3 peripheries, playing ripple 5 is to be the protruding shape that sticks up of central authorities, its central authorities are provided with a central hollow-out parts 51, and outwards being provided with plural wavy arc in these central authorities' hollow-out parts 51 peripheries extends, make this bullet ripple 5 central hollow-out parts 51 be inserted in and to be incorporated into coil holder 41 stage casing peripheries, these bullet ripple 5 peripheries then can be incorporated into bottom surface 12 peripheries of rack body 1 downwards, oscillating plate 6 peripheries system is pressed on the expansion opening 11 of rack body 1 with a ring-type pressure ring 62, and be provided with a central hollow-out parts 63 in oscillating plate 6 central authorities, can be for being inserted in and being incorporated into coil holder 41 top side peripheries, and on this central authorities' hollow-out parts 63, can fall in this coil holder 41 to prevent foreign matter in conjunction with the dust cover 61 of a covering;

In the said structure, because the bottom surface 12 internal diameters system of this rack body 1 approaches footpath within its expansion opening 11, therefore compare with traditional structure, this extension area that plays ripple 5 is bigger, when the audio signal electric current by terminal board 14 via lead to voice coil loudspeaker voice coil 4, can produce the magnetic reciprocation of electromagnetic force and this magnetite 3, make this voice coil loudspeaker voice coil 4 produce slide displacement with respect to magnetic 3, but this moment voice coil loudspeaker voice coil 4 coil holder 41 interlock oscillating plates 6, play ripple 5 and form vibration, this oscillating plate 6 still can produce identical among, the sound of high frequency part then can effectively promote the sound effect of low frequency part than the bullet ripple 5 of large tracts of land.

As shown in Figure 7, it is external magnetic type horn structure section plan, rack body 1 is also applicable to the horn structure of external magnetic type, the main difference of itself and aforementioned internal magnetization horn structure is to be: its annular magnetic 30 is to be sleeved on periphery outside the coil holder 41, yoke 20 then is provided with a central spud 201 in central authorities, can convexedly stretch in the medium pore 42 of coil holder 41; Compare with traditional external magnetic type horn structure, the rack body 1 of this creation has the bottom surface 12 than large tracts of land, therefore can ccontaining bullets ripple 5 than large tracts of land, and cause it to have preferable low frequency on the whole and react.

Above-mentioned is preferred embodiment of the present utility model, is not the scope that is used for limiting this creation enforcement.Be that all equalizations of being done according to the utility model claim scope change and modification, be all the utility model claim and contain.

Claims

1, a kind of loud speaker that improves low frequency tonequality, it comprises support, be provided with the accommodation space of side tool expansion opening in the rack body, central authorities are provided with a bottom opening in the bottom surface of this accommodation space, the position that one yoke contracts with its central fovea is embedded in the bottom opening of rack body, and central authorities can be ccontaining in conjunction with a magnetite in this yoke, the tubular coil holder periphery of one central authorities perforation twines voice coil loudspeaker voice coil, and make this coil holder extensible in the side of magnetite, this coil holder stage casing periphery is inserted in and is incorporated into to the centre hollow-out parts among one bullet ripple was preset with central authorities, this bullet ripple is provided with plural wavy cambered surface in central hollow-out parts periphery and stretches out, and make this bullet ripple periphery then can be incorporated into the bottom surface periphery of rack body downwards, one oscillating plate is the expansion opening that is incorporated into rack body with periphery, and the centre then can be incorporated into the coil holder top side among this oscillating plate; The bottom surface internal diameter system that it is characterized in that described rack body near and less than footpath within its expansion opening.

2, a kind of according to claim 1 loud speaker that improves low frequency tonequality, all causes bottom surface that it is characterized in that described rack body is to expanding the deflection expansion that opening has 0 to 5 degree.

3, a kind of according to claim 1 loud speaker that improves low frequency tonequality is characterized in that described voice coil loudspeaker voice coil and coil holder system is sleeved on periphery outside the magnetite.

4, a kind of according to claim 1 loud speaker that improves low frequency tonequality is characterized in that described magnetite system is a ring-type, and this voice coil loudspeaker voice coil and coil holder are to entreat inner peripheral among extending to magnetite.