CN2166567Y

CN2166567Y - Horn hanging side with thermal plasticity rubber materials

Info

Publication number: CN2166567Y
Application number: CN 93226206
Authority: CN
Inventors: 黄新民
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-08-19
Filing date: 1993-08-19
Publication date: 1994-05-25
Anticipated expiration: 2003-08-19

Abstract

The utility model discloses a horn hanging side with thermal plasticity rubber material, which relates to the horn hanging side of an electromechanical sensor in electricity. The utility model is characterized in that the thermal plasticity rubber material which is made into circular cambered surface shape material by vacuum formation is made into a horn hanging side 11 by interceptive cut. The thermal plasticity rubber material is characterized in that the hardness is Shore hardness 55A-50D; the specific gravity is 0.95-1.1; the thickness is 0.25 mm-0.8 mm. The thermal plasticity rubber material is made by the mixing of rubber with good restoring performance and polypropylene with good shock absorbing performance. The utility model has the advantages of light material, good reprocessing performance, rapid production, good shock absorbing performance and restoring performance, undistorted sound transmission, and good quality.

Description

Horn hanging side with thermal plasticity rubber materials

The utility model relates to the outstanding limit of loudspeaker of pickoff in the electricity.

The sounding principle of loudspeaker and structure thereof are that its awl basin is subjected to produce reciprocal vibration back and forth after the promotion of voice coil loudspeaker voice coil, vibrates blow air whereby and produce dilatational wave and sounding, wherein rarefaction wave is that low frequency, condensation wave are the acoustic quality of the good and bad absolute effect loudspeaker of high frequency, event awl basin, in addition, the outstanding limit of loudspeaker also is the important composition element that concerns the loudspeaker quality.

The function on the outstanding limit of loudspeaker and the optimum condition that need possess thereof are as follows:

1. the support of cone can be provided, make the sound basin when double vibrations, can keep the reciprocating motion of straight line, and off-center axis not, and guarantee voice coil loudspeaker voice coil can not touch pad and rub and burn.

2. have suitable flexibility, make voice coil loudspeaker voice coil move up and down when promoting the sound basin, be unlikely because too hard and pin down the reciprocating motion of sound basin, cause and to agitate bass and distortion phenomenon takes place; Equally, if outstanding limit is too hard, the distortion in the time of also can causing the motion of sound basin.

3. with damping capaicty and all good characteristic of recovery, because the outstanding limit of loudspeaker can influence the distortion of low range and the characteristic of midrange especially; With regard to damping capaicty,, wish that generally this vibration of transmitting can be absorbed, in order to avoid bounce-back returns after arriving metal frame, and makes the sound aliasing distortion when the limit is hanged in arrival because the intermediate frequency that voice coil loudspeaker voice coil sends will transmit along rousing outwards to hang down from voice coil loudspeaker voice coil; At low frequency, after wishing that voice coil loudspeaker voice coil is received the low frequency of big signal, can get back to initial point rapidly and accept the signal of next time again, because the outstanding limit of recovery difference can make bulging paper get back to initial point the day after the fair, when causing secondary big signal to arrive, voice coil loudspeaker voice coil is difficult to do fully complete vibration back and forth, that is to say, the bad material of elasticity can be made too much double vibrations after the signal that receives once, send unwanted sound equipment and cause distortion.

4. material wants light, and this is one of the important document on the outstanding limit of loudspeaker, because material gently just is easy to promote, comparatively speaking, also just can reach same effect by less magnet, and reduce cost of manufacture.

The material of making the outstanding limit of loudspeaker should possess the above needed certain degree of hardness of support that cone can be provided simultaneously, has suitable flexibility again, can not be too hard, simultaneously make it again with damping capaicty and all good characteristic of recovery, also require it to have the light condition of material, just can produce the outstanding limit of good loudspeaker.

The outstanding limit of existing loudspeaker situation is as follows:

1. the outstanding limit of papery loudspeaker is the outstanding limit of loudspeaker of using the earliest, it must with drum paper when making, once make shape with multilayer concentric fold, and then coat adhesive sticker (damping thing), to increase its shock absorption, hard but sound basin (promptly rousing paper) needs, and the outstanding limit of loudspeaker needs soft, require under the situation in this difference, the outstanding limit of papery extremely difficulty is taken into account simultaneously;

2. the outstanding limit of the loudspeaker made of polyurethane foam material hot pressing, this is to use the outstanding limit of maximum a kind of loudspeaker at present, it is that polyurethane resin is being roused the moulding of paper (sound basin) station-service hot pressing mode with Chlorofluorocarbons (CFCs) (CFC) or II CFC as the blowing agent foaming, cement in sound basin edge again, its shortcoming has:

A. elasticity is very good, causes the sound basin to be interrogated the after vibration number of times too much and distortion,

B. will cause serious environmental issue with Chlorofluorocarbons (CFCs) (CFC) or II CFC as blowing agent, and at present,, cause how tame loud speaker manufactory to ban use of this kind expanded material because environmental issue is difficult to solve;

3. the outstanding limit of cloth matter loudspeaker is to mix thermosetting resin at cloth cover (cotton), after coating adhesive sticker again, adopt hot-forming making, the outstanding limit of this cloth matter loudspeaker the control of embryo cloth and on resin, the amount that is coated with adhesive sticker all be difficult to control, thereby the quality on the outstanding limit of this cloth matter loudspeaker is stable inadequately;

4. the outstanding limit of the loudspeaker of ordinary rubber material is to use the outstanding limit of best loudspeaker at present, and control can obtain good shock absorption and recovery by prescription for it, but the control of prescription is not too easy, and speed of production is slow, proportion height shortcomings such as (proportions 1.15～1.3).

The purpose of this utility model is the weak point at the outstanding limit of above loudspeaker, plan provides a kind of loudspeaker of thermoplastic rubber material outstanding limit, make it have certain rigidity, so that can support cone, have suitable flexibility,, possess material and gently wait requirement simultaneously again with preferable damping capaicty and recovery, to reach the throughput rate height, has the outstanding limit of loudspeaker of high pass genuine piece matter.

The utility model is to realize like this, the outstanding limit of the loudspeaker of thermoplastic rubber material is to be Shore hardness 55A～50D by having hardness, proportion is 0.95～1.1, thickness is 0.25 millimeter～0.8 millimeter thermoplastic rubber sheet material, makes circular cambered surface section bar, makes the outstanding limit of loudspeaker through cutting again through vacuum forming.

Thermoplastic rubber is by the wherein a kind of rubber in butyl rubber (IIR), ethylene/propylene rubber (EPDM), oil resistant rubber (NBR) or the natural rubber (NR) and polypropylene is mixing makes, and its process is identical with the process of plastic cement.This kind thermoplastic rubber also can adopt polystyrene, butadiene, benzene second rare (SEBS) to be base material.

The thermoplastic rubber sheet material also can adopt the pressure sintering moulding, cuts off to make the outstanding limit of loudspeaker again.

Below in conjunction with the accompanying drawing illustrated embodiment the utility model structure is elaborated;

Fig. 1 is the cutaway view of horn structure

The outstanding limit of 1-awl basin 2-voice coil loudspeaker voice coil 11-loudspeaker

The 12-tap web

During enforcement, see also Fig. 1, the outstanding limit 11 of the loudspeaker of thermoplastic rubber material is to be Shore hardness 55A～50D by having hardness, proportion is 0.95～1.1, thickness is 0.25 millimeter～0.8 millimeter thermoplastic rubber sheet material, makes circular cambered surface section bar, makes the outstanding limit 11 of loudspeaker through cutting again through vacuum forming.

Thermoplastic rubber (TPE) is by rubber and mixing the forming of polypropylene (P.P), promptly be the wherein a kind of rubber in several and polypropylene is mixing makes by butyl rubber (IIR), ethylene/propylene rubber (EPDM), oil resistant rubber (NBR) or natural rubber (NR), its process is identical with the technological process of plastic cement.This thermoplastic rubber had not only had as recovery fabulous the rubber, but also had had good shock absorption as polypropylene (P.P).The sulfur content that adds in this thermoplastic rubber in the rubber is controlled at 0～99%, and proportion is between 0.95～1.1, and thickness can reach the outstanding light requirement of limit 11 materials of loudspeaker fully between 0.25 millimeter～0.8 millimeter.Simultaneously, the height of hardness be can change, when the loudspeaker of design and making different size, can different hardness and thickness be selected according to designing requirement by the control of prescription.It is base material that thermoplastic rubber (TPE) also can adopt polystyrene, butadiene, styrene (SEBS).The thermoplastic rubber sheet material also can adopt the pressure sintering moulding to cut off again and make the outstanding limit 11 of loudspeaker, when the fabrication and processing loudspeaker hang limit 11, any except the outstanding limit of papery loudspeaker, consolidating the fashionable glue that all adopts for combining media with sound basin (awl basin) 1, but the outstanding limit 11 of the loudspeaker that the utility model thermoplastic rubber is made can adopt the sound basin 1 of hot fusion method and polypropylene (P.P) material to close admittedly, and obtains best quality.If thermoplastic rubber is when being the end with polypropylene (P.P), more can omit this technological process of gluing, has processability preferably.

The utility model has the advantages that: horn hanging side adopts thermoplastic rubber (TPE) to make, not only have excellent processing characteristics, more can obtain splendid high-facsimile quality, as to the good supportive of cone basin, suitable flexibility is returned shake ability and recovery preferably. Vacuum becomes The type method is made than traditional pressure sintering moulding, and its throughput rate can improve several times, has high industrial utilization.

Claims

1, the outstanding limit of a kind of loudspeaker of thermoplastic rubber material, it is characterized in that it is is Shore hardness 55A～50D by hardness, proportion is 0.95～1.1, thickness is 0.25 millimeter～0.8 millimeter thermoplastic rubber sheet material, makes circular cambered surface section bar, makes the outstanding limit (11) of loudspeaker through cutting again through vacuum forming.

2, according to the outstanding limit of the loudspeaker of the described thermoplastic rubber material of claim 1, it is characterized in that thermoplastic rubber is by the wherein a kind of rubber in butyl rubber, ethylene/propylene rubber, oil resistant rubber or the natural rubber and polypropylene is mixing makes, and thermoplastic rubber also can adopt polystyrene, butadiene, styrene materials.

3,, it is characterized in that the thermoplastic rubber sheet material also can adopt the pressure sintering moulding to cut off again and make the outstanding limit (11) of loudspeaker according to the outstanding limit of the loudspeaker of the described thermoplastic rubber material of claim 1.