CN1356852A

CN1356852A - Suspension edge of loudspeaker and its loudspeaker

Info

Publication number: CN1356852A
Application number: CN 01139272
Authority: CN
Inventors: 黄新民
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-12-27
Filing date: 2001-12-27
Publication date: 2002-07-03

Abstract

A suspended W-shaped edge of loudspeaker has movable end linked to vibration membrane and another end fixed to frame. A loudspeaker is composed of frame, driver on rear end of frame, a group of vibration membranes dust-preventing cover in the central position of vibration membranes, and suspended edge. Its advantages include better bass effect.

Description

A kind of suspension edge of loudspeaker and loud speaker thereof

Technical field

The present invention relates to a kind of improvement structure of suspension edge of loudspeaker and adopt this knot to improve the loud speaker on the outstanding limit of structure, refer in particular to outstanding limit that is shaped as W shape and the loud speaker that adopts the outstanding limit of W shape.

Background technology

The outstanding limit of existing loud speaker often has semicircle and two kinds of zigzag, and semicircle then has epirelief or recessed two kinds of shapes, and its material has rubber, PU sponge or cotton to constitute; And jagged material is made of cotton or paper.This two kinds of outstanding limits and following defective is arranged when using in the raising one's voice of this two kinds of outstanding limits device:

1, semicircle outstanding limit 4, the movable end 41 of one end is affixed with vibrating membrane (drum paper) 5, and other end stiff end 42 and framework 51 affixed (as shown in Figure 1), because the characteristic of the hot-press solidifying typing of its structure (no matter being epirelief or recessed) and thermoset material, (rubber, PU sponge or foam behind thermocompression forming, the cotton of phenolic resins is crossed in impregnation, is all hot-forming), material has been finalized the design in semicircular framework.When loud speaker was made back and forth piston action because of sounding, outstanding limit can produce a counter power (as shown in Figure 2) to this piston action.This counter power makes drum paper when the piston action of doing back and forth, and it comes with the strength of returning unequal.Simultaneously, after this power is communicated to outstanding limit, because semicircular structure, this power can't be balanced out, therefore restricted freely moving of piston, this phenomenon can be found out from the natural resonance point (Fo) of experiment A, when therefore this semi-circular outstanding limit is applied in miniature loudspeaker, make this loud speaker can't send low frequency preferably.

2, the outstanding limit (as shown in Figure 2) 6 of zigzag, the movable end 61 of one end is affixed with vibrating membrane (drum paper) 7, and the stiff end 62 of the other end is affixed with framework 61.Because the restriction of its shape and cloth matter can not offer the movable stroke of the bigger piston of bulging paper, make the outstanding limit of this kind difficulty be widely used on the genuine woofer of high pass.

Summary of the invention

Technical problem to be solved by this invention provides a kind of suspension edge of loudspeaker and loud speaker thereof, to overcome the above-mentioned shortcoming of existing suspension edge of loudspeaker, by changing suspension edge of loudspeaker shape and material, in order to improve the piston action of zigzag cloth matter suspension edge of loudspeaker commonly used, the free space of piston action is strengthened, and natural resonance point reduces.

The present invention solves the problems of the technologies described above the technical scheme that is adopted:

A kind of suspension edge of loudspeaker, has a movable end that is connected with vibrating membrane, the other end has stiff end and framework affixed, outstanding limit be shaped as W shape, when loudspeaker structure was driven, the outstanding limit of W shape body was reverse counteracting in epirelief and recessed strength, can not produce the extruding phenomenon, therefore vibrating membrane is when doing up and down piston action, strength unbalanced phenomena in the time of can not producing up and down piston action because of the dysplasia on outstanding limit.The best camber in limit on the outstanding limit of this W shape.

A kind of loud speaker, comprise: a framework 11, one is disposed at the driver part 12 of aforesaid frame 11 rear sides, one assembly is in aforesaid frame 11 inside and in the vibrating membrane 14 of aforementioned driver part 12 voice coil loudspeaker voice coils 13 windings, the dust cover 15 of the aforementioned vibrating membrane of one configuration set 14 centers, and

aforesaid framework

11 and 14 of vibrating membranes are connected with an outstanding limit 16, should have a movable end 161 that is connected with vibrating membrane 14 in outstanding limit 16, and the other end has a stiff end 162 and framework 11 is affixed, and it is characterized in that: outstanding limit is shaped as W shape.The best camber in limit on the outstanding limit of this W shape.

Compared with prior art, the invention has the advantages that the suspension edge of loudspeaker that has adopted W shape, when piston action is done back and forth in the vibration of drum paper, when the power of this movable end passes to the outstanding limit of W shape, this power can be offset by epirelief or recessed structure, so piston action is not more restricted, thereby make resonance point lower, piston action is more complete.Make loud speaker have preferable low-frequency sound and piston action more complete, and can confirm by following experiment.

Experimental technique is:

One, A experiment

Make two 8 cun identical loudspeaker monomers of all the other conditionally completes except that outstanding limit.Outstanding limit is respectively outstanding limit of W shape rubber and the outstanding limit of zigzag cloth matter.The part of two loud speakers is as follows respectively:

Common part:

1, rouses paper, papery drum paper.

2, play ripple, moral cloud cloth matter bullet ripple.

3, framework, 8 cun frames.

4, magnet, Dongyang, Y30,70mm * 32mm * 15mm.

5, last slice, 95mm * 40.7mm * 5.

6, T iron, 95mm * 34.95mm * 25.5 * 5.

Different parts is as follows:

1, outstanding limit, a kind of is the outstanding limit of W shape, and its material is hot-forming rubber, and its hardness is that Shore 60 is spent; Another kind is the outstanding limit of zigzag cloth matter, and its material is that Populus deltoides soaks phenolic resins and hot-forming, its shape such as Fig. 8, Fig. 9.

Two, B experiment

Measure outstanding limit of W shape, bonding back and the outstanding snare drum paper of zigzag respectively under constant weight, it comes and the displacement (simulation piston action) of returning when static state.From then on displacement judges that there is preferable, bigger piston space on which kind of outstanding limit dynamically the time.

Step:

The A experiment

1, similarity condition is made two loudspeaker monomers down, as Fig. 8, Fig. 9.

2, measure the frequency of these two loudspeaker monomers with LMS (Loudspeaker Measurement System) in no sound chamber, the results are shown in Figure 6, Fig. 7.

3, try to achieve the T/S parameter with the method for the Delta Mass of LMS, see Table 1.

The B experiment

1, gets two of blank frameworks, be stained with the PP drum paper that has sticked outstanding limit of W shape and semicircle outstanding limit respectively.

2, be stained with 1.3 kilograms clay respectively.

3, measure respectively when just putting, clay is arranged and do not have the displacement of clay.

When 4, measuring counter putting respectively, clay is arranged and do not have the displacement of clay.

A, B experimental result see Table 1, Fig. 6, Fig. 7.

Conclusion:

Can find out the outstanding limit of W shape significantly when imposing constant weight by table 1, come with the displacement of returning piston action much at one, and obviously greater than the outstanding limit of zigzag cloth matter.

The outstanding limit of W shape is when above-mentioned the same terms, and its Fo has lower value, and compliance is preferable.

By Fig. 6, Fig. 7 as seen, the frequency response on the outstanding limit of W shape is preferable, and there is preferable bass performance on the outstanding limit of W shape than the outstanding limit of zigzag.

Table 1, the outstanding limit of W shape and the outstanding limit experiment of traditional zigzag are relatively

	W shape rubber limit	The zigzag selvedge
	W shape rubber limit	The zigzag selvedge	The B experiment, displacement, mm	Upwards: 10 is downward: 10	Upwards: 6 is downward: 6
A experiment T/S parameter relatively			The B experiment, displacement, mm	Upwards: 10 is downward: 10	Upwards: 6 is downward: 6
A experiment T/S parameter relatively			Fo (the natural resonance point, Hz)	????41.3	????47.4
Cms (compliance), μ M/N	????859.7	????604.1	Fo (the natural resonance point, Hz)	????41.3	????47.4
Cms (compliance), μ M/N	????859.7	????604.1	????Qts	????0.39	????0.39
The comparison of frequency sound	Fig. 6	Fig. 7	????Qts	????0.39	????0.39

Description of drawings

Fig. 1 is the semicircle outstanding limit of existing loud speaker schematic diagram;

Fig. 2 is the outstanding limit of existing loud speaker zigzag schematic diagram;

Fig. 3 is for adopting the loudspeaker structure schematic diagram on the outstanding limit of the present invention;

Fig. 4 is the partial enlarged drawing of Fig. 3;

The outstanding limit action of W shape of the present invention schematic diagram when Fig. 5 is piston action;

The frequency diagram that Fig. 6 records with LMS for the outstanding limit of W shape rubber loud speaker;

Fig. 7 is the frequency diagram that the loud speaker of zigzag selvedge records with LMS;

Fig. 8 is experiment W shape rubber limit loud speaker figure;

Fig. 9 is experiment zigzag cloth-edge speaker figure.

Embodiment

Embodiment describes in further detail the present invention below in conjunction with accompanying drawing, below is most preferred embodiment of the present invention only, is not to be used for limiting scope of the present invention.All according to the equalization variation that the present invention did, all belong to the protection range of this patent.

As Fig. 2, shown in Figure 3, loudspeaker structure 1 comprises: a framework 11, one is disposed at the driver part 12 of aforesaid frame 11 rear sides, one assembly is in aforesaid frame 11 inside and in the vibrating membrane 14 (drum paper) of aforementioned driver part 12 voice coil loudspeaker voice coils 13 windings, the dust cover 15 of the aforementioned vibrating membrane of one configuration set 14 centers, and

aforesaid framework

11 and 14 of vibrating membranes are connected with the outstanding limit 16 of a W shape, the outstanding limit 16 of this W shape has a movable end 161 that is connected with vibrating membrane 14, and the other end has a stiff end 162 and framework 11 is affixed, behind signal input drive division 12, this driver part 12 just drives vibrating membrane 14 and does the piston motion, when piston action is done back and forth in vibrating membrane 14 vibrations, the power of this movable end 161 is delivered to the outstanding limit 16 of W type and advances, this power is offset by the structure of epirelief 163 and recessed 164, so piston action is not restricted, thereby make natural resonance point (fo) lower, piston action is more complete.

Simultaneously, when the material on this outstanding limit is had the rubber of elasticity and expansion performance or thermoplastic elastomer instead, the free space of its piston action strengthens, so it is big that the compliance of monomer becomes, natural resonance point reduces, the low frequency of frequency extends more sufficient, abundanter, has satisfied the requirement of high fax sound equipment to low frequency.

As Fig. 4, be the piston action schematic diagram of suspension edge of loudspeaker.When loudspeaker structure 1 was driven, when these arrow 2 expression piston action were downward, the outstanding limit 16 of W shape was reverse counteracting in epirelief 163 and recessed 164 strength, can not produce the extruding phenomenon.This arrow 3 expressions piston action upwards, the piston action downward at the strength on the outstanding limit 16 of W shape and arrow 2 is just in time opposite, also can not produce the extruding phenomenon.Strength unbalanced phenomena when so vibrating membrane 14 when doing upper and lower piston action, can not produce up and down piston action because of the dysplasia on outstanding limit.

The rubber limit is flexible simultaneously, has flexible characteristic, so bring up piston action bigger free space is arranged, with respect to the outstanding limit (being generally used on the professional woofer) of zigzag loud speaker cloth matter, the space of its piston action does not almost have elasticity and retractility owing to be subjected to the restriction of cloth matter fiber (commonly used is flat fabric).Aforementioned comparison, except the shape and material on outstanding limit, it is identical that drum paper, cloth matter, magnetic go back to system etc.

Can find out that from table 1 except the shape difference on outstanding limit, at drum paper, cloth matter, magnetic return under the identical situation such as system, the outstanding limit of W shape is come identical with the displacement of time piston action and greater than the zigzag selvedge when imposing constant weight.Know relatively from the T/S parameter that the more outstanding limit of W shape is when all conditions is identical, its Fo (natural resonance point) is lower, and the Cms compliance is preferable.From Fig. 6, Fig. 7 as seen, the outstanding side frequency response of W shape is better than the outstanding limit of zigzag, and there is preferable performance on the outstanding limit of low-frequency sound W shape.

Claims

1, a kind of suspension edge of loudspeaker has a movable end that is connected with vibrating membrane, and the other end has stiff end and framework affixed, and it is characterized in that: outstanding limit is shaped as W shape.

2, suspension edge of loudspeaker as claimed in claim 1 is characterized in that: the limit on the outstanding limit of described W shape is an arc.

3, suspension edge of loudspeaker as claimed in claim 1 or 2 is characterized in that: the outstanding limit of described W shape is made by the rubber of elasticity or expansion performance.

4, suspension edge of loudspeaker as claimed in claim 1 or 2 is characterized in that: the outstanding limit of described W shape is obtained by thermoplastic elastomer.

5, a kind of loud speaker, comprise: a framework (11), one is disposed at the driver part (12) of aforesaid frame (11) rear side, one assembly is in aforesaid frame (11) inside and in the vibrating membrane (14) of aforementioned driver part (12) voice coil loudspeaker voice coil (13) winding, the dust cover (15) of the aforementioned vibrating membrane of one configuration set (14) center, and be connected with an outstanding limit (16) between aforesaid framework (11) and vibrating membrane (14), should have a movable end (161) that is connected with vibrating membrane (14) in outstanding limit (16), and the other end has a stiff end (162) and framework (11) is affixed, it is characterized in that: outstanding limit (16) is shaped as W shape.

6, loud speaker as claimed in claim 5 is characterized in that: the limit on the outstanding limit of described W shape is an arc.

7, as claim 5 or 6 described loud speakers, it is characterized in that: the outstanding limit of described W shape is made by the rubber of elasticity or expansion performance.

8, as claim 5 or 6 described loud speakers, it is characterized in that: the outstanding limit of described W shape is obtained by thermoplastic elastomer.