CN110324763B

CN110324763B - Hi-Fi cone loudspeaker

Info

Publication number: CN110324763B
Application number: CN201910595077.0A
Authority: CN
Inventors: 张建栋
Original assignee: Suzhou Jingli Electronic Co ltd
Current assignee: Suzhou Jingli Electronic Co ltd
Priority date: 2019-07-03
Filing date: 2019-07-03
Publication date: 2020-09-22
Anticipated expiration: 2039-07-03
Also published as: CN110324763A

Abstract

The invention relates to a high-fidelity conical loudspeaker, in particular to the technical field of acoustics, which comprises a basin frame, a vibration system and a magnetic circuit system for providing driving force for the vibration system, wherein the vibration system comprises a conical vibration film, a voice coil and a dust cover, the voice coil is arranged in the center of the basin frame, the conical vibration film is arranged between the voice coil and the opening end of the basin frame, the dust cover is fixed at one end of the voice coil, which is far away from a magnetic gap, the dust cover comprises a spherical top used for covering the opening end of the voice coil and an extension part which extends in the direction of being far away from the top point of the spherical top after being folded along the edge of the spherical top, the extension end of the extension part is provided with an arc-shaped reinforcing block which extends in the direction of being far away. The invention can change the segmentation vibration state of the conical vibrating diaphragm while playing a protection effect, improve the high-frequency characteristic of the loudspeaker, improve the tone quality and improve the rigidity and the strength.

Description

Hi-Fi cone loudspeaker

Technical Field

The invention relates to the technical field of acoustics, in particular to a high-fidelity conical loudspeaker.

Background

A speaker plays an indispensable role in a sound reproduction system as a common electroacoustic transducer device for converting electric energy into acoustic energy. The hi-fi cone speaker is the weakest component in the sound reproduction system, and is the most important component for the sound reproduction effect. The speakers are classified into cone speakers, dome speakers, flat panel speakers, and band speakers according to the diaphragm structure of the speakers, and the cone speakers are most widely used. The existing cone loudspeaker mainly comprises a vibration system, a magnetic circuit system and an auxiliary system, wherein the vibration system comprises a cone diaphragm, a voice coil, a centering support piece and a dust cover, the cone diaphragm is mainly focused on the vibration system in the prior art, the dust cover is very few in the research of the dust cover, the dust cover in the prior art is bonded at the center of the cone diaphragm, the main effect is to prevent dust from entering a magnetic gap, the high-frequency performance is influenced, but the auxiliary lifting effect on the cone diaphragm is very small, especially, the vibration state of the cone diaphragm is hardly lifted in the splitting mode, the existing dust cover is simple in structure, and the rigidity and the strength of the dust cover are also to be improved.

Disclosure of Invention

The invention aims to provide a high-fidelity conical loudspeaker, which can change the segmentation vibration state of a conical vibrating diaphragm while playing a protection effect, improve the high-frequency characteristic of the loudspeaker, improve the tone quality and improve the rigidity and the strength.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides a high-fidelity cone loudspeaker, includes basin frame, vibration system and is used for providing the magnetic circuit of drive power for vibration system, vibration system includes cone diaphragm, voice coil loudspeaker voice coil and dust cover, the voice coil loudspeaker voice coil sets up in basin frame center, the cone diaphragm sets up between voice coil loudspeaker voice coil and basin frame mouth end, the dust cover is fixed in the one end that the magnetic gap was kept away from to the voice coil loudspeaker voice coil, the dust cover is including the dome top that is used for covering voice coil loudspeaker voice coil mouth end and the extension of keeping away from dome top summit orientation extension after turning along dome top edge, extension end is equipped with the arc boss that extends to the main aspects along cone diaphragm tip, leave the clearance space between arc boss and the cone diaphragm.

By adopting the technical scheme, the extension part is convenient to be bonded and fixed with the voice coil, the assembly is convenient, and the integral strength and rigidity of the dust cover can be enhanced; and adopt the arc boss, and leave clearance space between arc boss and the cone diaphragm, can change the segmentation vibration state of cone diaphragm, improve the high frequency characteristic of speaker, promote tone quality.

Furthermore, the extension part is a horn mouth-shaped structure which obliquely extends along the edge of the top of the spherical top towards the direction far away from the top of the spherical top, and the inner wall of the extension part is not contacted with the outer wall of the voice coil.

Through adopting above-mentioned technical scheme, the extension adopts horn mouth column structure, can strengthen the damping of cone diaphragm tip, and the assembly of being convenient for, because the inner wall of extension and the outer wall contactless of voice coil loudspeaker voice coil, still can change the vibration state of cutting apart of cone diaphragm, promote the performance of cone diaphragm.

Furthermore, the cone-shaped vibrating diaphragm is of a curved structure, and the curvature of the arc-shaped reinforcing block is the same as that of the cone-shaped vibrating diaphragm.

Through adopting above-mentioned technical scheme, make the combination that arc boss and cone diaphragm can be better, and then improve the effect that changes cone diaphragm and cut apart the vibration state.

Furthermore, the arc-shaped reinforcing block is of a large-small head structure, the small head end of the arc-shaped reinforcing block is fixed to the end face of the extending end of the extending part, the large head end of the arc-shaped reinforcing block is suspended, and the end face of the small head end of the arc-shaped reinforcing block is not in contact with the outer wall of the voice coil.

Through adopting above-mentioned technical scheme, make arc boss itself have higher intensity and rigidity, can play better supplementary effect to the cone diaphragm simultaneously to improve the high frequency characteristic of speaker, promote tone quality.

Furthermore, the voice coil is suspended in a magnetic gap arranged inside the magnetic circuit system through the centering support piece, one end of the voice coil, which is provided with a winding, is located in the magnetic gap, and the other end of the voice coil extends out of the magnetic circuit system.

By adopting the technical scheme, the driving force generated by the magnetic circuit system is transmitted to the voice coil to provide power for the vibration of the conical vibrating diaphragm; and through setting up the centering support piece, not only can keep the correct position of voice coil loudspeaker voice coil in the magnetic gap, guarantee moreover that the voice coil loudspeaker voice coil is when the atress, vibration system is along axial reciprocating motion, still can prevent that the dust from getting into the magnetic gap.

Furthermore, the voice coil is supported and positioned at the center of the basin frame through the centering support sheet, and one end, provided with a winding wire, of the voice coil is suspended in a magnetic gap arranged inside the magnetic circuit system.

Furthermore, the cone-shaped vibrating diaphragm is positioned between the arc-shaped reinforcing block and the centering support piece.

Through adopting above-mentioned technical scheme to guarantee that the arc boss can change the segmentation vibration state of toper vibrating diaphragm, promote tone quality.

Furthermore, the small end of the cone-shaped vibrating diaphragm is sleeved outside the voice coil, the large end of the cone-shaped vibrating diaphragm is fixedly connected with the end of the basin frame opening through a folded ring, and the small end of the cone-shaped vibrating diaphragm is not in contact with the outer wall of the voice coil.

By adopting the technical scheme, the vibration of the cone-shaped vibrating diaphragm can be supported and maintained by arranging the folding ring, so that the cone-shaped vibrating diaphragm can freely vibrate along the axial direction but cannot transversely move, and the resonance and reflection are reduced due to the damping property of the folding ring; because a gap space is reserved between the small end of the cone-shaped vibrating diaphragm and the voice coil, the movement of the voice coil in the magnetic gap can be guided, and the transmission of the vibration force is facilitated.

Furthermore, the axes of the basin frame, the voice coil, the cone-shaped vibrating diaphragm, the dust cover and the magnetic circuit system are positioned on the same straight line.

By adopting the technical scheme, the high-fidelity characteristic is ensured, and the assembly is convenient.

In conclusion, the beneficial technical effects of the invention are as follows:

1. the extension part is arranged, so that the voice coil can be conveniently bonded and fixed, the assembly is convenient, and the overall strength and rigidity of the dust cover can be enhanced; an arc-shaped reinforcing block is adopted, and a gap space is reserved between the arc-shaped reinforcing block and the conical vibrating diaphragm, so that the split vibration state of the conical vibrating diaphragm can be changed, the high-frequency characteristic of the loudspeaker is improved, and the tone quality is improved;

2. the extension part with the horn mouth-shaped structure can enhance the damping of the small end of the cone-shaped vibrating diaphragm and is convenient to assemble, and the inner wall of the extension part is not contacted with the outer wall of the voice coil, so that the split vibration state of the cone-shaped vibrating diaphragm can be changed, and the performance of the cone-shaped vibrating diaphragm is improved;

3. the arc-shaped reinforcing block with the large and small head structures is adopted, so that the arc-shaped reinforcing block has high strength and rigidity, and a better auxiliary effect can be achieved on the cone-shaped vibrating diaphragm, so that the high-frequency characteristic of the loudspeaker is improved, and the tone quality is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic right-side view of FIG. 1;

FIG. 4 is a sectional view taken along line B-B of FIG. 3;

fig. 5 is a perspective view of fig. 3.

In the figure, 1, a basin stand; 11. a wire frame; 2. a vibration system; 3. a magnetic circuit system; 31. a magnetic gap; 32. a magnetic conduction lower plate; 32a, a magnetic conduction column; 33. a magnet; 34. a magnetic conductive upper plate; 4. a voice coil; 41. winding; 42. a bobbin; 43. pressing line paper; 5. a conical diaphragm; 6. a dust cover; 61. a dome-shaped top; 62. an extension portion; 63. an arc-shaped reinforcing block; 7. folding the ring; 71. a first connecting edge; 72. a second connecting edge; 8. a compression member; 9. a centering branch piece.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, 2 and 5, the hi-fi cone speaker disclosed by the invention comprises a frame 1, a vibration system 2 and a magnetic circuit system 3 for providing driving force for the vibration system 2, wherein the frame 1 is in a cone structure and is used for connecting the vibration system 2 and the magnetic circuit system, and a wiring frame 11 is fixed on the frame 1 and is assembled and connected with external equipment. The vibration system 2 comprises a cone-shaped vibrating diaphragm 5, a voice coil 4 and a dust cover 6, wherein the voice coil 4 comprises a bobbin 42, a winding 41 which is fixedly bonded on the bobbin 42, and wire pressing paper 43 which is fixedly bonded on the bobbin and is arranged side by side with the winding 41 along the axial direction; the material of the cone-shaped vibrating diaphragm 5 can be paper or composite material; the magnetic circuit system 3 comprises a magnetic conduction lower plate 32 with a magnetic conduction column 32a at the center, a magnet 33 and a magnetic conduction upper plate 34, wherein the magnet 33 is sleeved outside the magnetic conduction column 32a and fixed between the magnetic conduction lower plate 32 and the magnetic conduction upper plate 34, and a magnetic gap 31 is formed between the outer wall of the magnetic conduction column 32a and the inner wall of the magnetic conduction upper plate 34; the voice coil 4 is positioned in the center of the frame 1, and the cone-shaped vibrating diaphragm 5 is arranged between the voice coil 4 and the opening end of the frame 1. Dust cover 6 fixed connection keeps away from the one end of magnetic gap 31 at voice coil loudspeaker voice coil 4, dust cover 6 is including bonding fix the ball top shape top 61 of voice coil loudspeaker voice coil 4 mouth end and follow ball top shape top 61 edge roll over to the extension 62 of keeping away from ball top shape top 61 summit direction extension, extension 62 extends the end bonding and is fixed with the arc boss 63 that extends to the main aspects along 5 tip of cone-shaped vibrating diaphragm, leave clearance space between arc boss 63 and the cone-shaped vibrating diaphragm 5, not only can change the segmentation vibration state of cone-shaped vibrating diaphragm 5 like this, improve the high frequency characteristic of speaker, promote tone quality, and be convenient for bond fixedly with voice coil loudspeaker voice coil 4, convenient assembly, can also strengthen the bulk strength and the rigidity of dust cover 6 simultaneously. Specifically, two arc-shaped reinforcing blocks 63 may be used, and the two arc-shaped reinforcing blocks 63 are arranged at intervals in the circumferential direction of the extension portion 62 to improve the effect of changing the divided vibration state of the cone diaphragm 5.

Referring to fig. 3 and 4, the extension portion 62 is a horn-shaped structure extending along the edge of the top portion 61 of the dome shape in a direction away from the top of the top portion 61 of the dome shape in an inclined manner, and the inner wall of the extension portion 62 is not in contact with the outer wall of the voice coil 4, so that the damping of the small end of the cone-shaped diaphragm 5 can be enhanced, the split vibration state of the cone-shaped diaphragm 5 is changed, the performance of the cone-shaped diaphragm is improved, and the assembly is facilitated.

Referring to fig. 3 and 4, the cone-shaped diaphragm 5 is of a curved structure, and the curvature of the arc-shaped reinforcing block 63 is the same as that of the cone-shaped diaphragm 5, so that the arc-shaped reinforcing block 63 and the cone-shaped diaphragm 5 can be better combined, and the effect of changing the cone-shaped diaphragm to cut the vibration state is improved.

Referring to fig. 3 and 5, arc boss 63 is big end and small end structure, and the tip end bonding of this arc boss 63 is fixed and is extended end face at extension 62, and the tip end of arc boss 63 is unsettled, and the tip end face of arc boss 63 and the outer wall of voice coil 4 do not contact, makes arc boss 63 itself have higher intensity and rigidity, can play better supplementary effect to cone diaphragm 5 simultaneously to improve the high frequency characteristic of speaker, promote tone quality.

Referring to fig. 2 and 5, the voice coil 4 is suspended in the magnetic gap 31 provided inside the magnetic circuit system 3 through the centering support 9, and one end of the voice coil 4 provided with the winding 41 is located in the magnetic gap 31, and the other end extends out of the magnetic circuit system 3, so that the driving force generated by the magnetic circuit system 3 is transmitted to the voice coil 4, and the driving force is provided for the vibration of the cone-shaped diaphragm 5. Specifically, the centering support 9 is of a corrugated structure, the outer ring of the centering support is bonded and fixed in a mounting groove formed in the basin frame 1, and the inner ring of the centering support is bonded and fixed on the outer wall of the bobbin 42, so that the correct position of the voice coil 4 in the magnetic gap 31 is maintained, the vibration system 2 is ensured to reciprocate in the axial direction when the voice coil 4 is stressed, and dust is prevented from entering the magnetic gap 31.

Referring to fig. 2 and 5, the cone-shaped diaphragm 5 is located between the arc-shaped reinforcing block 63 and the centering disk 9 to ensure that the arc-shaped reinforcing block can change the segmentation vibration state of the cone-shaped diaphragm 5, so that the tone quality is improved, and the cone-shaped diaphragm 5 is limited by the arc-shaped reinforcing block 63 and the centering disk 9 to ensure the vibration effect.

Referring to fig. 2 and 5, the small end of the cone-shaped vibrating diaphragm 5 is sleeved outside the voice coil 4, the large end of the cone-shaped vibrating diaphragm is fixedly connected with the opening end of the basin frame 1 through the corrugated rim 7, and the small end of the cone-shaped vibrating diaphragm 5 is not in contact with the outer wall of the voice coil 4. Specifically, the edge ring 7 is of a semicircular structure, a first connecting edge 71 is formed at one end of the edge ring 7 in the radial direction in an integrated manner, a second connecting edge 72 is formed at the other end of the edge ring 7 in the radial direction in an integrated manner, the first connecting edge 71 is fixedly bonded with the outer wall of the large end of the cone diaphragm 5, and the second connecting edge 72 is fixedly arranged at the opening end of the basin frame 1 through a pressing piece 8 in a press-fitting manner.

Referring to fig. 2 and 5, the axes of the frame 1, the voice coil 4, the cone-shaped diaphragm 5, the dust cover 6 and the magnetic circuit system 3 are located on the same straight line to ensure high fidelity characteristics and facilitate assembly.

The implementation principle of the above embodiment is as follows: provide magnetic force through magnetic circuit 3 to voice coil 4, make cone diaphragm 5 vibrate and produce resonance and sound with surrounding air, simultaneously at cone diaphragm 5 vibration in-process, dome shape top 61 and arc boss 63 also can be corresponding production resonance to change cone diaphragm 5 cut apart the vibration state, improve the high frequency characteristic of speaker, promote tone quality.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a high-fidelity toper speaker, includes basin frame (1), vibration system (2) and is used for providing magnetic circuit (3) of drive power for vibration system (2), vibration system (2) are including cone diaphragm (5), voice coil loudspeaker voice coil (4) and dust cover (6), voice coil loudspeaker voice coil (4) set up in basin frame (1) center, cone diaphragm (5) set up between voice coil loudspeaker voice coil (4) and basin frame (1) mouth end, its characterized in that: the dustproof cover (6) is fixed at one end, far away from the magnetic gap (31), of the voice coil (4), the dustproof cover (6) comprises a spherical top (61) used for covering the opening end of the voice coil (4) and an extension part (62) extending in the direction far away from the top point of the spherical top (61) after the edge of the spherical top (61) is turned, an arc-shaped reinforcing block (63) extending in the direction from the small end to the large end of the conical vibrating diaphragm (5) is arranged at the extension end of the extension part (62), and a gap space is reserved between the arc-shaped reinforcing block (63) and the conical vibrating diaphragm (5); the extension part (62) is of a horn-mouth-shaped structure which obliquely extends along the edge of the spherical top-shaped top part (61) to the direction far away from the top point of the spherical top-shaped top part (61), and the inner wall of the extension part (62) is not in contact with the outer wall of the voice coil (4).

2. The high fidelity cone loudspeaker in claim 1, wherein: the cone-shaped vibrating diaphragm (5) is of a curve-shaped structure, and the curvature of the arc-shaped reinforcing block (63) is the same as that of the cone-shaped vibrating diaphragm (5).

3. The high fidelity cone loudspeaker in claim 2, wherein: arc boss (63) are big end structure, and the tip end of this arc boss (63) is fixed in extension (62) extension end terminal surface, and the big head end of arc boss (63) is unsettled, the tip end terminal surface of arc boss (63) and voice coil loudspeaker voice coil (4) outer wall contactless.

4. The high fidelity cone loudspeaker of claim 3, wherein: the voice coil (4) is suspended in a magnetic gap (31) formed in the magnetic circuit system (3) through a centering support piece (9), one end of the voice coil (4) provided with a winding (41) is located in the magnetic gap (31), and the other end of the voice coil extends out of the magnetic circuit system (3).

5. The high fidelity cone loudspeaker in claim 4, wherein: the cone-shaped diaphragm (5) is positioned between the arc-shaped reinforcing block (63) and the centering support piece (9).

6. The high fidelity cone loudspeaker in claim 5, wherein: the small end of the cone-shaped vibrating diaphragm (5) is sleeved outside the voice coil (4), the large end of the cone-shaped vibrating diaphragm is fixedly connected with the opening end of the basin frame (1) through the folding ring (7), and the small end of the cone-shaped vibrating diaphragm (5) is not in contact with the outer wall of the voice coil (4).

7. The high fidelity cone loudspeaker in claim 6, wherein: the axes of the basin frame (1), the voice coil (4), the conical vibrating diaphragm (5), the dust cover (6) and the magnetic circuit system (3) are positioned on the same straight line.