CN110166912A

CN110166912A - Loudspeaker

Info

Publication number: CN110166912A
Application number: CN201910595087.4A
Authority: CN
Inventors: 张建栋
Original assignee: Suzhou Jing Li Electronics Co Ltd By Shares
Current assignee: Suzhou Jing Li Electronics Co Ltd By Shares
Priority date: 2019-07-03
Filing date: 2019-07-03
Publication date: 2019-08-23
Anticipated expiration: 2039-07-03
Also published as: CN110166912B

Abstract

The present invention relates to a kind of loudspeakers, in particular to technical field of acoustics, including frame, vibrational system and for providing the magnetic circuit system of driving force for vibrational system, the vibrational system includes the conical diaphragm for being set to the speech coil framework at frame center and being set between speech coil framework and frame, one end that the speech coil framework is equipped with voice coil is located in magnetic circuit system, the other end is provided with dust-proof vibrating member, the dust-proof vibrating member includes the dustproof part connecting with speech coil framework mouth end and extends outward to form the taper auxiliary vibrating diaphragm conformal with conical diaphragm far from an end margin of speech coil framework along dustproof part, the taper auxiliary vibrating diaphragm is located in conical diaphragm.The present invention can not only prevent dust from entering magnetic gap, improve protection effect, and can change the propagation path and phase of sound wave, improve high frequency performance and intermediate frequency valley point, greatly promotion sound quality.

Description

Loudspeaker

Technical field

The present invention relates to technical field of acoustics, more particularly, to a kind of loudspeaker.

Background technique

Loudspeaker as convert electrical energy into sound can common electro-acoustic transducer device, played in sound place system can not or Scarce effect.Loudspeaker is a most weak device in sound place system, and for sound puts effect, it be again one most Important component.Loudspeaker presses the difference of its diaphragm structure, can be divided into cone loudspeaker, dome loudspeaker, plate shaped loudspeaking Device and ribbon speaker, wherein cone loudspeaker and dome loudspeaker occupy leading position.Existing cone loudspeaker master It to include vibrational system, magnetic circuit system and auxiliary system, wherein vibrational system includes conical diaphragm, voice coil, centring disk and prevents Dust hood is at present concentrated mainly on conical diaphragm the research of vibrational system, and considerably less for the research of dust cover, existing Dust cover in technology is bonded at vibrating diaphragm center, and main function is to prevent dust from entering magnetic gap, influences high frequency performance, but by In the limitation of itself structure, the change effect of propagation path and phase to sound wave is poor, especially for intermediate frequency valley point Improvement is little, and the effect promoted to sound quality is not significant.

Summary of the invention

The object of the present invention is to provide a kind of loudspeakers, can not only prevent dust from entering magnetic gap, improve protection effect, and And the propagation path and phase of sound wave can be changed, improve high frequency performance and intermediate frequency valley point, greatly promotion sound quality.

Foregoing invention purpose of the invention has the technical scheme that

A kind of loudspeaker, including frame, vibrational system and for providing the magnetic circuit system of driving force, the vibration for vibrational system System includes the conical diaphragm for being set to the voice coil at frame center and being set between voice coil and frame, and the voice coil is equipped with coiling One end be located in magnetic circuit system, the other end is provided with dust-proof vibrating member, and the dust-proof vibrating member includes connecting with voice coil mouth end Dustproof part and along dustproof part far from an end margin of voice coil extend outward to form with conical diaphragm it is conformal taper auxiliary shake Film, the taper auxiliary vibrating diaphragm are located in conical diaphragm.

It can prevent dust from entering magnetic gap by dustproof part is arranged by using above-mentioned technical proposal, improve protection effect Fruit；Assist vibrating diaphragm by setting taper, can propagation path to sound wave and phase effectively changed, " second can be formed Vibrating diaphragm ", plays booster action to conical diaphragm, improves high frequency performance and intermediate frequency valley point, promotes significant effect to sound quality.

Further, the dustproof part includes being fixed on the annular interconnecting piece at voice coil mouth end and being set in annular interconnecting piece Wall is used to cover the dust cover at voice coil mouth end, and the small end of the taper auxiliary vibrating diaphragm is set to annular interconnecting piece outer wall.

By using above-mentioned technical proposal, it is fixedly connected using annular interconnecting piece with voice coil mouth end, convenient for being adhesively fixed, and Shield is set to annular interconnecting piece inner wall, can live voice coil mouth end shield, prevents dust from entering magnetic gap, guarantees protection effect, It is able to ascend the overall stiffness of shield simultaneously；The small end of taper auxiliary vibrating diaphragm is set to annular interconnecting piece outer wall, can both be changed The propagation path and phase of change of voice wave play booster action to conical diaphragm, improve intermediate frequency valley point, promote sound quality, and will not be right Shield causes to interfere, and promotes whole structural strength and rigidity.

Further, the internal diameter of the annular interconnecting piece is less than the internal diameter of voice coil, and the outer diameter of annular interconnecting piece is greater than voice coil Outer diameter, the annular interconnecting piece inner wall edge has turn back after the insertion section that extends into voice coil, the dust cover is set to The elongated end of insertion section.

By using above-mentioned technical proposal, since the outer diameter of annular interconnecting piece is greater than the outer diameter of voice coil, and taper auxiliary vibration Film is set to annular interconnecting piece outer wall, can expose the part outside voice coil using annular interconnecting piece and play certain damping, And can promote the support strength that vibrating diaphragm is assisted taper；Since the internal diameter of annular interconnecting piece is less than the internal diameter of voice coil, and insertion section It is formed in annular interconnecting piece inner wall edge, dust cover is located at the elongated end of insertion section, can not only improve the rigid of dust cover in this way Degree, and convenient for being attached with voice coil, also it can enhance the overall stiffness that taper assists vibrating diaphragm by insertion section.

Further, there are gaps between the insertion section outer wall and voice-coil inwall.

By using above-mentioned technical proposal, so that dust cover forms hanging structure, vibration effect can be generated in a certain range Fruit can improve high frequency playback to a certain extent, and then improve sound quality.

Further, the height of the taper auxiliary vibrating diaphragm is less than the height of conical diaphragm, and taper auxiliary vibrating diaphragm is outer Wall is not contacted with the inner wall of conical diaphragm.

By using above-mentioned technical proposal, the normal vibration of taper auxiliary vibrating diaphragm not only can guarantee, but also will not be to conical diaphragm Work cause to interfere, play the role of reinforcement.

Further, the voice coil is positioned at frame center by centring disk support, and one end that voice coil is equipped with coiling is outstanding In the magnetic gap being equipped with inside magnetic circuit system.

By using above-mentioned technical proposal, the driving force that magnetic circuit system generates passes to voice coil, is the vibration of conical diaphragm Power is provided；And by setting centring disk, correct position of the voice coil in magnetic gap can not only be kept, and guarantee that voice coil exists When stress, vibrational system is moved axially in reciprocal fashion, and can also prevent dust from entering magnetic gap.

Further, the small end of the conical diaphragm is sheathed on outside voice coil, and big end connects by the way that ring and frame mouth end are fixed It connects, there are clearance spaces between the small end and voice coil of the conical diaphragm.

The vibration of conical diaphragm can be supported and be kept, taper is made by the way that ring is arranged by using above-mentioned technical proposal Vibrating diaphragm can in axial direction free vibration, be but unable to transverse shifting, and due to the damping and amortization that ring itself has, make resonance and anti- It penetrates and all reduces；Due to, there are clearance space, the fortune to voice coil in magnetic gap may be implemented between the small end and voice coil of conical diaphragm It is dynamic to be oriented to, conducive to the transmitting of vibration force.

Further, the ring is semicircular structure, which is equipped with and connect with conical diaphragm big end First connection side, the ring radial direction other end are equipped with the second connection side connecting with frame, and second connection side passes through compressing member Frame mouth end is fixed in press fitting.

Allow conical diaphragm that there is large magnitude using semicircle ring by using above-mentioned technical proposal, enhancing is high Fidelity performance, while conical diaphragm can be made big in the axial direct motion of vibration.

Further, the conical diaphragm big end outer wall connect side outer wall with first and is fixedly connected, in conical diaphragm big end Wall connect side with first in conical diaphragm and connects circumferentially arranged with the lug boss to conical diaphragm internal protrusion, the boss Locate corresponding section；The conical diaphragm is circumferentially spaced on the outer wall of big end to be provided with multiple reinforcing ribs.

The company of conical diaphragm Yu ring junction can be enhanced by the way that lug boss is arranged by using above-mentioned technical proposal Connect intensity, conical diaphragm can not only be made rigidly strong in transverse direction, and can in biggish amplitude range, make driving force with It is displaced linear；By the way that reinforcing rib is arranged, thus it is possible to vary the state of diaphagras improves the high frequency characteristics of loudspeaker, also The intensity and damping of conical diaphragm can be enhanced.

Further, the frame, voice coil, conical diaphragm, annular interconnecting piece, dust cover, taper auxiliary vibrating diaphragm and magnetic The axle center of road system is located on the same line.

By using above-mentioned technical proposal, guarantee high-fidelity characteristic, and convenient for assembly.

In conclusion advantageous effects of the invention are as follows:

It 1. assisting vibrating diaphragm by setting dustproof part and taper, can not only prevent dust from entering magnetic gap, improve protection effect, and Can propagation path to sound wave and phase effectively changed, " the second vibrating diaphragm " can be formed, auxiliary is played to conical diaphragm Effect improves high frequency performance and intermediate frequency valley point, promotes significant effect to sound quality；

2. by setting insertion section, and there are gaps between insertion section outer wall and voice-coil inwall, can not only improve dust cover Rigidity, and convenient for being attached with voice coil, it can also enhance taper by insertion section and assist the overall stiffness of vibrating diaphragm, while may be used also So that dust cover is formed hanging structure, vibrating effect can be generated in a certain range, high frequency playback can be improved to a certain extent, And then improve sound quality；

3. can enhance the bonding strength of conical diaphragm Yu ring junction by setting lug boss, taper can not only be made to shake Film is rigidly strong in transverse direction, and driving force and displacement can be kept linear in biggish amplitude range.

Detailed description of the invention

Fig. 1 is overall structure diagram of the invention；

Fig. 2 is the portion A-A cross-sectional view in Fig. 1；

Fig. 3 is H enlarged schematic partial view in Fig. 2；

Fig. 4 is portion P enlarged diagram in Fig. 2；

Fig. 5 is the right side view of Fig. 1；

Fig. 6 is the portion B-B cross-sectional view in Fig. 5；

Fig. 7 is the right view stereoscopic schematic diagram of Fig. 1；

Fig. 8 is the left view stereoscopic schematic diagram of Fig. 1.

In figure, 1, frame；11, patch bay；2, vibrational system；3, magnetic circuit system；31, magnetic gap；32, magnetic conduction lower plate；32a, Conducting magnetic column；33, magnet；34, magnetic conduction upper plate；4, voice coil；41, coiling；42, bobbin；43, lead；44, crimping paper；5, taper Vibrating diaphragm；51, lug boss；52, reinforcing rib；6, dust-proof vibrating member；61, dustproof part；611, annular interconnecting piece；The insertion section 611a； 612, dust cover；62, taper assists vibrating diaphragm；7, ring；71, the first connection side；72, the second connection side；8, compressing member；9, it feels relieved Branch piece.

Specific embodiment

Below in conjunction with attached drawing, invention is further described in detail.

Referring to Fig.1, Fig. 2 and Fig. 7, be a kind of loudspeaker disclosed by the invention, including frame 1, vibrational system 2 and for for The magnetic circuit system 3 of the offer driving force of vibrational system 2；Frame 1 is pyramidal structure, for connecting vibrational system 2 and magnetic circuit system, It is fixed with patch bay 11 in middle frame 1, for installing the lead 43 of fixed voice coil 4.Vibrational system 2 includes being fixed in frame 1 The voice coil 4 of the heart and the conical diaphragm 5 being mounted between voice coil 4 and frame 1, voice coil 4 include bobbin 42, are adhesively fixed on coiling Coiling 41 on pipe 42, the crimping paper 44 for being adhesively fixed on bobbin and being arranged side by side with coiling 41 along axial direction and Nian Jie solid The lead 43 being scheduled on crimping paper；Conical diaphragm 5 uses curved configuration, and material can be papery or composite material；Magnetic circuit System 3 includes magnetic conduction lower plate 32, magnet 33 and the magnetic conduction upper plate 34 that center has conducting magnetic column 32a, and 33 sets of magnet in conducting magnetic column 32a It outside and is fixed between magnetic conduction lower plate 32 and magnetic conduction upper plate 34, forms magnetic between 34 inner wall of conducting magnetic column 32a outer wall and magnetic conduction upper plate Gap 31.One end that voice coil 4 is equipped with coiling 41 is located in magnetic circuit system 3, and the other end is fixed with dust-proof vibrating member 6, dust-proof vibrating member 6 It is extended outward to form including the dustproof part 61 being adhesively fixed with 4 mouthfuls of ends of voice coil and along dustproof part 61 far from an end margin of voice coil 4 Vibrating diaphragm 62 is assisted with the conformal taper of conical diaphragm 5, taper auxiliary vibrating diaphragm 62 is located in conical diaphragm 5, in this way can not only Prevent dust from entering magnetic gap 31, improve protection effect, and can propagation path to sound wave and phase effectively changed, can With formation " the second vibrating diaphragm ", booster action is played to conical diaphragm 5, improves high frequency performance and intermediate frequency valley point, sound quality is promoted and is imitated Fruit is significant.

Referring to Fig. 3, dustproof part 61 includes being bonded and fixed to the annular interconnecting piece 611 at 4 mouthfuls of ends of voice coil and being shaped in ring 611 inner wall of shape interconnecting piece is used to cover the dust cover 612 at 4 mouthfuls of ends of voice coil, and the small end of taper auxiliary vibrating diaphragm 62 is shaped in ring 611 outer wall of shape interconnecting piece, shield 612 and annular interconnecting piece 611 use integrated formed structure, can not only be by 4 mouthfuls of ends of voice coil It covers, prevents dust from entering magnetic gap 31, guarantee protection effect, and be able to ascend the overall stiffness of shield 612；Taper simultaneously Vibrating diaphragm 62 and annular interconnecting piece 611 is assisted also to use integrated formed structure, manufacture easy to process promotes integral strength and rigidity. Specifically, the internal diameter of annular interconnecting piece 611 is less than the internal diameter of voice coil 4, the outer diameter of annular interconnecting piece 611 is greater than the outer diameter of voice coil 4, Annular 611 inner wall edge of interconnecting piece is shaped in the insertion section 611a extended after turning back into voice coil 4, dust cover 612 The elongated end of insertion section 611a, since the outer diameter of annular interconnecting piece 611 is greater than the outer diameter of voice coil 4, and taper assists vibrating diaphragm 62 In annular 611 outer wall of interconnecting piece, the part outside voice coil 4 can be exposed using annular interconnecting piece 611 and play certain damping, And can promote the support strength that vibrating diaphragm 62 is assisted taper；Since the internal diameter of annular interconnecting piece 611 is less than the internal diameter of voice coil 4, and Insertion section 611a is formed in annular 611 inner wall edge of interconnecting piece, and dust cover 612 is located at the elongated end of insertion section 611a, so not It can be improved the rigidity of dust cover 612, and only convenient for being attached with voice coil 4, can also enhance taper by insertion section 611a Assist the overall stiffness of vibrating diaphragm 62.

Referring to Fig. 3, there are gaps between 4 inner wall of insertion section 611a outer wall and voice coil, so that dust cover 612 forms hanging knot Structure can generate vibrating effect in a certain range, can improve high frequency playback to a certain extent, and then improve sound quality.

Referring to Fig. 2, Fig. 5, Fig. 6 and Fig. 8, taper assists the height of vibrating diaphragm 62 less than the height of conical diaphragm 5, and taper is auxiliary It helps the outer wall of vibrating diaphragm 62 not contact with the inner wall of conical diaphragm 5, not only can guarantee the normal vibration of taper auxiliary vibrating diaphragm 62, but also will not The work of conical diaphragm 5 is caused to interfere, plays the role of reinforcement.

Referring to Fig. 2 and Fig. 6, voice coil 4 is positioned at 1 center of frame by the support of centring disk 9, and voice coil 4 is equipped with coiling 41 One end is vacantly located in magnetic gap 31, and the driving force for generating magnetic circuit system 3 passes to voice coil 4, and the vibration for conical diaphragm 5 provides Power.Specifically, centring disk 9 uses wave structure, outer ring is bonded and fixed in the mounting groove being equipped with inside frame 1, Inner ring is bonded and fixed to 42 outer wall of bobbin, to keep correct position of the voice coil 4 in magnetic gap 31, guarantee voice coil 4 in stress, Vibrational system 2 moves axially in reciprocal fashion, and prevents dust from entering magnetic gap 31.

Referring to Fig. 2 and Fig. 4, the small end of conical diaphragm 5 is sheathed on outside voice coil 4, and big end is solid by ring 7 and 1 mouthful of end of frame Fixed connection, there are clearance space between the small end and voice coil 4 of conical diaphragm 5, conical diaphragm 5 close to small end end thickness from Big end is gradually increased to the direction of small end, forms bell mouth shape structure, can increase in this way intensity at 5 small end of conical diaphragm and Damping guarantees that conical diaphragm 5 is linear under large amplitude, improves high frequency and resets, promotes sound quality；The small end of conical diaphragm 5 is located at Between centring disk 9 and annular interconnecting piece 611.Specifically, ring 7 is semicircular structure, the radial one end of the ring 7 is integrally formed There is first connect with 5 big end of conical diaphragm to connect side 71, the radial other end of ring 7 is integrally formed with the connect with frame 1 1 mouthful of end of frame is fixed on by the press fitting of compressing member 8 in two connection sides 72, the second connection side 72.5 big end outer wall of conical diaphragm and first Connection 71 outer wall of side is adhesively fixed, and 5 big end inner wall of conical diaphragm is circumferentially arranged with the lug boss to 5 internal protrusion of conical diaphragm 51, lug boss 51 is located at conical diaphragm 5 and connect 71 junction corresponding section of side with first；Outer wall of the conical diaphragm 5 close to big end On circumferentially equidistant interval be equipped with multiple reinforcing ribs 52, not only increase conical diaphragm 5 in this way and the connection of 7 junction of ring be strong Degree, keeps conical diaphragm 5 rigidly strong in transverse direction, and can make driving force in biggish amplitude range and be displaced linear pass System.

Referring to Fig. 2, frame 1, voice coil 4, conical diaphragm 5, annular interconnecting piece 611, dust cover 612, taper assist vibrating diaphragm 62 And the axle center of magnetic circuit system 3 is located on the same line, to guarantee high-fidelity characteristic, and convenient for assembly.

The implementation principle of above-described embodiment are as follows: provide magnetic force to voice coil 4 by magnetic circuit system 3, make the vibration of conical diaphragm 5 simultaneously Resonance is generated with the air of surrounding and is made a sound, while in 5 vibration processes of conical diaphragm, and taper assists vibrating diaphragm 62 and dust-proof Cover 612 can also generate resonance accordingly, so that the propagation path and phase to sound wave are effectively changed, improvement high frequency performance with Intermediate frequency valley point promotes sound quality.

The present invention is not limited only to above-described embodiment, and 5 big end inner wall of conical diaphragm can also be used with first and connect side 71 inner walls are adhesively fixed, and corresponding lug boss 51 is circumferentially set to the first connection 71 outer wall of side, and lug boss 51 is located at first and connects Edge fit 71 and 5 junction corresponding section of conical diaphragm, are able to ascend the stiffness and strength on the first connection side 71 and ring 7 in this way, Guarantee pliable and damping and amortization.

The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it It is interior.

Claims

1. a kind of loudspeaker, including frame (1), vibrational system (2) and for providing the magnetic circuit system of driving force for vibrational system (2) Unite (3), the vibrational system (2) include be set to the voice coil (4) at frame (1) center and be set to voice coil (4) and frame (1) it Between conical diaphragm (5), it is characterised in that: the voice coil (4) be equipped with coiling (41) one end be located in magnetic circuit system (3), separately One end is provided with dust-proof vibrating member (6), the dust-proof vibrating member (6) include the dustproof part (61) being connect with voice coil (4) mouth end and The taper auxiliary conformal with conical diaphragm (5) is extended outward to form far from an end margin of voice coil (4) along dustproof part (61) to shake Film (62), taper auxiliary vibrating diaphragm (62) are located in conical diaphragm (5).

2. loudspeaker according to claim 1, it is characterised in that: the dustproof part (61) includes being fixed on voice coil (4) mouth The annular interconnecting piece (611) at end and annular interconnecting piece (611) inner wall is set to for covering the dust cover at voice coil (4) mouth end (612), the small end of taper auxiliary vibrating diaphragm (62) is set to annular interconnecting piece (611) outer wall.

3. loudspeaker according to claim 2, it is characterised in that: the internal diameter of the annular interconnecting piece (611) is less than voice coil (4) internal diameter, the outer diameter of annular interconnecting piece (611) are greater than the outer diameter of voice coil (4), described annular interconnecting piece (611) inner wall edge With the insertion section (611a) extended after turning back into voice coil (4), the dust cover (612) is set to prolonging for insertion section (611a) Stretch end.

4. loudspeaker according to claim 3, it is characterised in that: insertion section (611a) outer wall and voice coil (4) inner wall Between there are gaps.

5. loudspeaker according to claim 1, it is characterised in that: the height of taper auxiliary vibrating diaphragm (62) is less than taper The height of vibrating diaphragm (5), and the outer wall of taper auxiliary vibrating diaphragm (62) is not contacted with the inner wall of conical diaphragm (5).

6. loudspeaker according to claim 1, it is characterised in that: the voice coil (4) passes through centring disk (9) support positioning In frame (1) center, one end that voice coil (4) is equipped with coiling (41) is suspended in the magnetic gap (31) being equipped with inside magnetic circuit system (3).

7. loudspeaker according to claim 6, it is characterised in that: the small end of the conical diaphragm (5) is sheathed on voice coil (4) Outside, big end is fixedly connected by ring (7) with frame (1) mouth end, is stayed between the small end and voice coil (4) of the conical diaphragm (5) There is clearance space.

8. loudspeaker according to claim 7, it is characterised in that: the ring (7) is semicircular structure, the ring (7) Radial one end is equipped with the first connection side (71) connecting with conical diaphragm (5) big end, and ring (7) the radial direction other end is equipped with and frame (1) the second connection side (72) of connection, second connection side (72) are fixed on frame (1) mouth end by compressing member (8) press fitting.

9. loudspeaker according to claim 8, it is characterised in that: conical diaphragm (5) the big end outer wall is connect with first Side (71) outer wall is fixedly connected, and conical diaphragm (5) big end inner wall is circumferentially arranged with the lug boss to conical diaphragm (5) internal protrusion (51), the lug boss (51) is located at conical diaphragm (5) and connect side (71) junction corresponding section with first；The conical diaphragm (5) circumferentially spaced on the outer wall of big end to be provided with multiple reinforcing ribs (52).

10. loudspeaker according to any one of claim 1 to 9, it is characterised in that: the frame (1), voice coil (4), cone Shape vibrating diaphragm (5), annular interconnecting piece (611), dust cover (612), taper assist vibrating diaphragm (62) and the axle center of magnetic circuit system (3) position In on same straight line.