CN205812380U - Speaker - Google Patents

Abstract

The utility model discloses a kind of speaker, relate to electro-acoustic product technical field, including frame and be fixed on the vibrational system in described frame and magnetic circuit system, described magnetic circuit system includes magnetic conductive part and is sequentially fixed at the Magnet on described magnetic conductive part and washer, magnetic gap is formed between described Magnet and described washer and described magnetic conductive part, position corresponding with described magnetic gap on described washer is provided with groove, and described groove is the circumferentially extending Guan Bi annular groove along described washer.This utility model speaker solves the technical problems such as the high-power lower distortion of prior art medium and low spectrum loudspeaker is serious, and this utility model speaker Distribution of Magnetic Field is uniform, and the BL linearity is good, and distortion is little, and acoustical behavior is high；Production difficulty is low simultaneously, and production efficiency is high.

Description

Speaker

Technical field

This utility model relates to electro-acoustic product technical field, particularly to a kind of speaker.

Background technology

Speaker is commonly called as loudspeaker, spreads out of for audio electrical signal is converted to sound, is a kind of energy conversion device.Conventional Woofer include frame and the vibrational system being fixed in frame and magnetic circuit system, vibrational system includes combining Basin with compound and voice coil loudspeaker voice coil, magnetic circuit system includes U ferrum or T ferrum and is sequentially fixed at the Magnet on U ferrum or T ferrum and washer, Magnet and Forming magnetic gap between washer and U ferrum or T ferrum, the end of voice coil loudspeaker voice coil is positioned at magnetic gap, and according to by the exchange in its coil The sound wave signal of telecommunication moves up and down in magnetic gap, drives basin with compound up-down vibration sounding.The magnetic circuit system of existing structure speaker Distribution of Magnetic Field uneven, in magnetic gap, the magnetic flux density of diverse location is inconsistent, causes voice coil loudspeaker voice coil moving up and down to different The magnetic field force being subject to during position is unbalanced, especially shows in powerful woofer and becomes apparent from, BL (mechanical-electric coupling The factor) the linearity poor, the low-frequency distortion of speaker is serious, and acoustical behavior is poor.

Utility model content

For disadvantages described above, technical problem to be solved in the utility model is to provide a kind of speaker, this speaker Distribution of Magnetic Field is uniform, and the BL linearity is good, and low-frequency distortion is little, and acoustical behavior is high.

For solving above-mentioned technical problem, the technical solution of the utility model is:

A kind of speaker, including frame and be fixed on the vibrational system in described frame and magnetic circuit system, described magnetic circuit system System includes magnetic conductive part and is sequentially fixed at the Magnet on described magnetic conductive part and washer, and described Magnet and described washer are with described Forming magnetic gap between magnetic conductive part, position corresponding with described magnetic gap on described washer is provided with groove, and described groove is Circumferentially extending Guan Bi annular groove along described washer.

Wherein, described groove is provided with two, and two described grooves are arranged along the axially spaced-apart of described washer.

Wherein, described washer includes the first washer, the second washer and the 3rd washer being sequentially overlapped together, recessed described in two Groove lays respectively at the position and described second washer and described 3rd washer that described first washer combines with described second washer The position combined.

Wherein, described first washer and described 3rd washer are equipped with near the edge of the side of described second washer Ring-type inner fovea part, inner fovea part described in two is collectively forming described groove with described second washer respectively.

Wherein, a short-circuited conducting sleeve it is respectively provided with in groove described in two.

Wherein, described magnetic conductive part is U ferrum, and described Magnet and described washer are fixed on the centre of described U ferrum, described Forming described magnetic gap between the sidewall of Magnet and described washer and described U ferrum, described groove is positioned on the sidewall of described washer.

Wherein, described frame includes combining between the higher and lower levels the first frame together and the second frame, the folding of described vibrational system The outward flange of ring is fixed on the end face of described first frame, and the outward flange of the centring disk of described vibrational system is fixed on described On the end face that second frame combines with described first frame.

Wherein, described first frame is provided with the first clamping part, and described second frame is provided with and described first clamping part Second clamping part of phase clamping.

Wherein, described first clamping part is draw-in groove, and described second clamping part is the claw matched with described draw-in groove.

Wherein, described first clamping part is claw, and described second clamping part is the draw-in groove matched with described claw.

After have employed technique scheme, the beneficial effects of the utility model are:

Owing to the position of magnetic gap corresponding on the washer of this utility model speaker is provided with groove, groove is the week along washer To the Guan Bi annular groove extended, the setting of groove changes the original distribution in magnetic field, improves the feelings that original Distribution of Magnetic Field is uneven Condition so that in magnetic gap, the magnetic flux density of each position is consistent, the magnetic field force that voice coil loudspeaker voice coil is subject to when moving up and down equalizes, thus effectively The linearity improving BL, reduce speaker low-frequency distortion under high-power, improve the acoustical behavior of speaker.

Owing to washer includes the first washer, the second washer and the 3rd washer that are sequentially overlapped together, two grooves positions respectively In the position that the position that the first washer and the second washer combine and the second washer and the 3rd washer combine.The knot of three pieces of washers Structure makes the processing of groove the most simple and convenient, reduces difficulty of processing, improves working (machining) efficiency.

Owing to being provided with short-circuited conducting sleeve in groove, short-circuited conducting sleeve can offset the magnetic field that voice coil loudspeaker voice coil produces, and weakens medium-high frequency induction reactance, effectively The medium-high frequency sensitivity that improve speaker, improve the acoustical behavior of speaker.

Owing to frame includes combining between the higher and lower levels the first frame together and the second frame, the outward flange of ring is fixed on first On the end face of frame, the outward flange of centring disk is fixed on the end face of the second frame.The frame of Split type structure enables to fixed The external diameter that the heart props up sheet is bigger than the external diameter of ring, thus ensure that ring and centring disk are respectively provided with the good linearity, reduces The distortion of speaker, further improves the acoustical behavior of speaker.

In sum, to solve the high-power lower distortion of prior art medium and low spectrum loudspeaker serious etc. for this utility model speaker Technical problem, this utility model speaker Distribution of Magnetic Field is uniform, and the BL linearity is good, and distortion is little, and acoustical behavior is high；Produce difficulty simultaneously Spending low, production efficiency is high.

Accompanying drawing explanation

Fig. 1 is the decomposition texture schematic diagram of this utility model speaker；

Fig. 2 is the sectional structure schematic diagram of this utility model speaker；

In figure: 10, basin with compound, 100, ring, 102, oscillating plate, 12, dust cap, 14, voice coil loudspeaker voice coil, 16, centring disk, 20, First frame, 200, draw-in groove, the 22, second frame, 220, claw, the 300, first washer, the 3000, first inner fovea part, 302, second Washer, the 304, the 3rd washer, the 3040, second inner fovea part, 32, Magnet, 34, U ferrum, 36, short-circuited conducting sleeve, 38, magnetic gap, 40, be electrically connected Connecting terminal.

Detailed description of the invention

Below in conjunction with the accompanying drawings and embodiment, this utility model is expanded on further.

Refer both in the orientation related in this specification refer both to residing for magnetic circuit system under the direction residing for vibrational system, orientation Direction.The inner side related in this specification refers both to the side near speaker center.

As Fig. 1 and Fig. 2 jointly shown in, a kind of speaker, including frame, the upper end of frame is fixed with vibrational system, frame Lower end be fixed with magnetic circuit system.

As Fig. 1 and Fig. 2 jointly shown in, vibrational system includes the basin with compound 10 being fixed on frame upper surface, basin with compound 10 Including the ring 100 combined and oscillating plate 102.The outward flange of ring 100 is fixed on the upper surface of frame, oscillating plate 102 connect have dust cap 12 and voice coil loudspeaker voice coil 14, the peripheral ring of voice coil loudspeaker voice coil 14 around being fixed with centring disk 16, the outward flange of centring disk 16 It is fixed on the middle part of frame.Magnetic circuit system includes magnetic conductive part, and in present embodiment, magnetic conductive part is U ferrum 34, the center of U ferrum 34 Position is fixed with Magnet 32 and washer successively, defines magnetic gap 38 between the sidewall of Magnet 32 and washer and U ferrum 34.Voice coil loudspeaker voice coil 14 End be positioned at magnetic gap 38.

As Fig. 1 and Fig. 2 jointly shown in, the position of washer correspondence magnetic gap 38 is provided with groove, i.e. the sidewall of washer is provided with Groove, groove is looped around on the sidewall of washer, is the circumferentially extending closing structure along washer, and groove can change magnetic field Distribution, improves the linearity of BL.In present embodiment, preferred groove is provided with two, and two grooves set along the axially spaced-apart of washer Put.

As Fig. 1 and Fig. 2 jointly shown in, in order to reduce the difficulty of processing of groove, in present embodiment, preferred washer is by from upper It is superimposed in turn and fixed to first washer the 300, second washer 302 together under and and the 3rd washer 304 is constituted, the 3rd washer 304 It is fixed on Magnet 32.In present embodiment, the first washer 300 is provided with ring-type near the edge of the side of the second washer 302 The first inner fovea part 3000, the 3rd washer 304 is provided with the second ring-type indent near the edge of the side of the second washer 302 Portion 3040, the i.e. first washer 300 is identical with the 3rd washer 304 structure and relative to the second washer 302 setting symmetrical above and below.First Inner fovea part 3000 and the second inner fovea part 3040 respectively and form above-mentioned two groove between the upper and lower surface of the second washer 302, I.e. two grooves are separately positioned on the first washer 300 and combine with the 3rd washer 304 with the second washer 302 and the second washer 302 Position.In present embodiment, two inner fovea parts are separately positioned on the first washer 300 and the 3rd washer 304, in actual application, Can also be by the first washer and the 3rd washer design cost plate structure, two inner fovea parts separately design at up and down the two of the second washer Side, can form above-mentioned groove structure equally.

As Fig. 1 and Fig. 2 jointly shown in, present embodiment preferably respectively arranges a short-circuited conducting sleeve 36 in two above-mentioned grooves, Short-circuited conducting sleeve 36 can weaken medium-high frequency induction reactance, promotes medium-high frequency sensitivity.

As Fig. 1 and Fig. 2 jointly shown in, frame includes the first frame 20 and the second frame 22 combined between the higher and lower levels together, folding The outward flange of ring 100 is fixed on the upper surface of the first frame 20, and the outward flange of centring disk 16 is fixed on the second frame 22 On upper surface, being i.e. fixed on the end face that the second frame 22 combines with the first frame 20, the sidewall upper of U ferrum 34 is combined in The lower end of two frame 22.

As it is shown in figure 1, the bottom of the first frame 20 is provided with the first clamping part, the top of the second frame 22 is provided with and the first card Second clamping part of button portion phase clamping.In present embodiment, the first clamping part is the card of the side-wall outer side being arranged on the first frame 20 Groove 200, the second clamping part is the claw 220 of the upper surface protruding from the second frame 22.Claw also can be arranged by actual application In the first frame 20, draw-in groove is arranged in the second frame 22.Claw is simple with the interface arrangment of draw-in groove, the convenient easily behaviour of clamping Make, reduce assembling difficulty, improve packaging efficiency.

As Fig. 1 and Fig. 2 jointly shown in, the sidepiece of the second frame 22 is fixed with electric connection terminal 40, is used for electrically connecting voice coil loudspeaker voice coil 14 with the external circuit of speaker.

Above-described embodiment is only for carrying out detailed elaboration the technical solution of the utility model as a example by U ferrum by magnetic conductive part, real In the application of border, the technical solution of the utility model is also applied for the speaker that magnetic conductive part is T ferrum, when magnetic conductive part is T ferrum, Groove should be arranged on the medial wall of washer, and other structure all can be same as the previously described embodiments, therefore is T ferrum about magnetic conductive part Detailed description of the invention be not described in detail in this.

This utility model speaker, by arranging annular groove on the sidewall of washer, effectively improves dividing of magnetic field Cloth so that Distribution of Magnetic Field obtains more uniform, improves the linearity of BL, reduces speaker low frequency in the case of high-power and loses Very, the acoustical behavior of speaker it is greatly improved.

This utility model is not limited to above-mentioned specific embodiment, and those of ordinary skill in the art visualizes from above-mentioned Sending out, without performing creative labour, all conversion made, within all falling within protection domain of the present utility model.

Claims (10)

1. speaker, including frame and be fixed on the vibrational system in described frame and magnetic circuit system, described magnetic circuit system includes Magnetic conductive part and be sequentially fixed at the Magnet on described magnetic conductive part and washer, described Magnet and described washer and described magnetic-conductance portion Magnetic gap is formed, it is characterised in that position corresponding with described magnetic gap on described washer is provided with groove, described recessed between part Groove is the circumferentially extending Guan Bi annular groove along described washer.

Speaker the most according to claim 1, it is characterised in that described groove is provided with two, two described grooves are along institute The axially spaced-apart stating washer is arranged.

Speaker the most according to claim 2, it is characterised in that described washer includes the first China being sequentially overlapped together Department, the second washer and the 3rd washer, groove described in two lays respectively at the position that described first washer combines with described second washer Put and position that described second washer combines with described 3rd washer.

Speaker the most according to claim 3, it is characterised in that described first washer and described 3rd washer are near described The edge of the side of the second washer is equipped with ring-type inner fovea part, and inner fovea part described in two is common with described second washer respectively Form described groove.

Speaker the most according to claim 4, it is characterised in that be respectively provided with a short-circuited conducting sleeve in groove described in two.

Speaker the most according to claim 5, it is characterised in that described magnetic conductive part is U ferrum, described Magnet and described China Department is fixed on the centre of described U ferrum, is formed between described magnetic between the sidewall of described Magnet and described washer and described U ferrum Gap, described groove is positioned on the sidewall of described washer.

7. according to the speaker described in claim 1 to 6 any claim, it is characterised in that described frame includes tying up and down The first frame being combined and the second frame, the outward flange of the ring of described vibrational system is fixed on the end of described first frame On face, the outward flange of the centring disk of described vibrational system is fixed on the end that described second frame combines with described first frame On face.

Speaker the most according to claim 7, it is characterised in that described first frame is provided with the first clamping part, described Second frame is provided with and the second clamping part of described first clamping part phase clamping.

Speaker the most according to claim 8, it is characterised in that described first clamping part is draw-in groove, described second buckle Portion is the claw matched with described draw-in groove.

Speaker the most according to claim 8, it is characterised in that described first clamping part is claw, described second buckle Portion is the draw-in groove matched with described claw.