Loudspeaker Magnetic Circuit System Having U-Shaped Short-Circuit Ring

Abstract

A loudspeaker magnetic circuit system includes an iron a magnetic steel, a spring washer, a voice coil and a U-shaped short-circuit ring. The U-shaped short-circuit ring includes a first ring body and a second ring body, and the voice coil is positioned and movable up and down in a U-shaped groove formed by the first ring body and the second ring body. Through making the short-circuit ring into a U-shaped structure and optimizing the connection relationship between the short-circuit ring and other components such as the spring washer, magnetic steel and iron, the present invention can effectively reduce the harmonic distortion and non-linear distortion of the loudspeaker and improve the overall acoustic performance of the speaker such that the sound quality of loudspeaker is improved.

Claims

1. A loudspeaker magnetic circuit system, comprising: an iron, comprising: a transverse portion; and a vertical portion extending upward from the transverse portion; a magnetic steel positioned above the transverse portion; a spring washer positioned above the transverse portion, an inner side of the spring washer being closer to the vertical portion than an inner side of the magnetic steel; a voice coil; a U-shaped short-circuit ring comprising: a first ring body; a second ring body; and a U-shaped groove formed by the first ring body and the second ring body, the voice coil being positioned in and movable up and down in the U-shaped groove; and an iron gap slot formed between the magnetic steel, the spring washer and the vertical portion, the voice coil and the U-shaped short-circuit ring being positioned in the iron gap slot, wherein the first ring body is sleeve-connected on the vertical portion and the second ring body is sleeve-connected on the magnetic steel or the spring washer.

2. The loudspeaker magnetic circuit system according to claim 1, wherein the iron is a T-shaped iron; and wherein the vertical portion extends upward from the center of the transverse portion.

3. The loudspeaker magnetic circuit system according to claim 2, wherein a bottom of the U-shaped short-circuit ring is positioned at an intersection of the transverse portion and the vertical portion of the T-shaped iron.

4. The loudspeaker magnetic circuit system according to claim 1, wherein the first ring body conducts a U-shaped bend downwardly at an end and is sleeve-connected to an upper end of the vertical portion, and wherein the second ring body conducts a U-shaped bend downwardly at an end and is sleeve-connected to an upper end of the spring washer.

5. The loudspeaker magnetic circuit system according to claim 1, wherein the first ring body conducts a U-shaped bend downwardly at an end and is sleeve-connected to an upper end of the vertical portion, and wherein the second ring body is sleeve-connected to a lower end of the spring washer.

6. The loudspeaker magnetic circuit system according to claim 1, further comprising a protrusion formed outward at an upper end of the vertical portion, wherein the first ring body is sleeve-connected to a lower end of the protrusion, and wherein the second ring body is sleeve-connected to a lower end of the spring washer.

7. The loudspeaker magnetic circuit system according to claim 1, wherein the iron is a U-shaped iron, and wherein a width of the spring washer is greater than a width of the magnetic steel.

8. The loudspeaker magnetic circuit system according to claim 1, wherein a bottom of the U-shaped short-circuit ring is positioned at an intersection of a bottom portion and a protruding portion of the U-shaped iron.

9. The loudspeaker magnetic circuit system according to claim 1, wherein the first ring body conducts a U-shaped bend downwardly at an end and is sleeve-connected to an upper end of the spring washer, and wherein the second ring body conducts a U-shaped bend downwardly at an end and is sleeve-connected to an upper end of the protruding portion.

10. The loudspeaker magnetic circuit system according to claim 8, further comprising a protruding block formed inward from above the protruding portion, wherein the second ring body is sleeve-connected to a lower end of the protruding block, and wherein the first ring body conducts a U-shaped bend downwardly at an end and is sleeve-connected to an upper end of the spring washer.

11. The loudspeaker magnetic circuit system according to claim 8, further comprising a protruding block formed inward at an upper end of the protruding portion, wherein the second ring body is sleeve-connected to a lower end of the protruding block, and wherein the first ring body is sleeve-connected to a lower end of the spring washer.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0027] For a more complete understanding of this disclosure, reference is now made to the following brief description, taken in connection with the accompanying drawings and detailed description, wherein like reference numerals represent like parts:

[0028] FIG. 1 is a section view of the loudspeaker magnetic circuit system having U-shaped short-circuit ring in Embodiment 1 with a T-shaped iron.

[0029] FIG. 2 illustrates simulation results of the loudspeaker magnetic circuit system having U-shaped short-circuit ring in Embodiment 1.

[0030] FIG. 3 is a section view of the loudspeaker magnetic circuit system having U-shaped short-circuit ring in Embodiment 2.

[0031] FIG. 4 is a section view of the loudspeaker magnetic circuit system having U-shaped short-circuit ring in Embodiment 3.

[0032] FIG. 5 is a section view of the loudspeaker magnetic circuit system having U-shaped short-circuit ring in Embodiment 4 with a U-shaped iron.

[0033] FIG. 6 is a section view of the loudspeaker magnetic circuit system having U-shaped short-circuit ring in Embodiment 5.

[0034] FIG. 7 is a section view of the loudspeaker magnetic circuit system having U-shaped short-circuit ring in Embodiment 6.

DETAILED DESCRIPTION

[0035] To facilitate understanding, the invention will be described in detail in combination with drawings and specific embodiments. The drawings illustrate preferred embodiments of the present invention. However, the present invention can be embodied in many different forms, and is not limited to the embodiments described herein. Rather, the purpose of providing these embodiments is to make the disclosure of the present invention more comprehensively understood.

[0036] It should be noted that when an element is referred to as being fixed to another element, it may be directly on another element or there may also be an intermediate element. When an element is considered to be connected to another element, it can be connected directly to another element or may also have an intermediate element.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terminology used herein in the specification of the present invention is for the purpose of describing particular embodiments only and is not intended to limit the invention.

Embodiment 1

[0038] FIG. 1 illustrates a section view of the loudspeaker magnetic circuit system having a U-shaped short-circuit ring in Embodiment 1. As shown in FIG. 1, a loudspeaker magnetic circuit system having a U-shaped short-circuit ring comprises a T-shaped iron 1, a magnetic steel 2, a spring washer 3, a voice coil 4 and a U-shaped short-circuit ring 5. The T-shaped iron 1 includes a transverse portion 11 and a vertical portion 12 vertically disposed above the center of the transverse portion 11. The magnetic steel 2 and the spring washer 3 are disposed in turn above the transverse portion 11, i.e. the magnetic steel 2 and the spring washer 3 are located in turn above the transverse portion 11. The inner side of the spring washer 3 is closer to the vertical portion 12 than the inner side of the magnetic steel 2. A T iron gap slot 13 is formed between the magnetic steel 2, the spring washer 3 and the vertical portion 12, and the voice coil 4 and the U-shaped short-circuit ring 5 are positioned in the T iron gap slot 13.

[0039] The bottom of the U-shaped short-circuit ring 5 is positioned at the intersection of the transverse portion 11 and the vertical portion 12 of the T-shaped iron 1. The U-shaped short-circuit 5 is fitted closely with the T-shaped iron 1 to reduce the effects on the magnetic gap space for the stability of the magnetic circuit system.

[0040] Further, the U-shaped short-circuit ring 5 comprises a first ring body 51 and a second ring body 52, and the voice coil 4 is positioned and movable up and down in a U-shaped groove 53 formed by the first ring body 51 and the second ring body 52.

[0041] In the present embodiment, the first ring body 51 conducts a U-shaped bend at the end and then is sleeve-connected to the upper end of the vertical portion 12. The second ring body 52 conducts a U-shaped bend downwardly at the end and then is sleeve-connected to the upper end of the spring washer 3.

[0042] FIG. 2 illustrates simulation results of the loudspeaker magnetic circuit system having U-shaped short-circuit ring in an embodiment of the invention. As shown in FIG. 2, the U-shaped short-circuit ring employing the present invention has a better simulation result than that of the traditional short-circuit ring and that without short-circuit ring.

[0043] In the loudspeaker magnetic circuit system of the present embodiment, the short-circuit ring is made into a U-shaped structure comprising a first ring body and a second ring body and the first ring body and second ring body are respectively sleeve-connected with the vertical portion and spring washer such that the overall magnetic circuit system becomes stable and variations in non-linear inductance within the magnetic circuit system decrease to reduce distortion for effectively reducing the harmonic distortion and non-linear distortion of loudspeaker, and the U-shaped short-circuit ring can slow down the increase of electrical resistance for the voice coil with the frequency so as to increase the frequency response output range of the loudspeaker, enhance the overall acoustic performance of the speaker and improve the sound quality of loudspeaker.

Embodiment 2

[0044] FIG. 3 illustrates a section view of the loudspeaker magnetic circuit system having a U-shaped short-circuit ring in Embodiment 2. As shown in FIG. 3, a loudspeaker magnetic circuit system having a U-shaped short-circuit ring comprises a T-shaped iron 1, a magnetic steel 2, a spring washer 3, a voice coil 4 and a U-shaped short-circuit ring 5. The T-shaped iron 1 includes a transverse portion 11 and a vertical portion 12 vertically disposed above the center of the transverse portion 11. The magnetic steel 2 and the spring washer 3 are disposed in turn above the transverse portion 11, i.e. the magnetic steel 2 and the spring washer 3 are located in turn above the transverse portion 11. The inner side of the spring washer 3 is closer to the vertical portion 12 than the inner side of the magnetic steel 2. A T iron gap slot 13 is formed between the magnetic steel 2, the spring washer 3 and the vertical portion 12, and the voice coil 4 and the U-shaped short-circuit ring 5 are positioned in the T iron gap slot 13.

[0045] The bottom of the U-shaped short-circuit ring 5 is positioned at the intersection of the transverse portion 11 and the vertical portion 12 of the T-shaped iron 1. The U-shaped short-circuit 5 is fitted closely with the T-shaped iron 1 to reduce the effects on the magnetic gap space for the stability of the magnetic circuit system.

[0046] Further, the U-shaped short-circuit ring 5 comprises a first ring body 51 and a second ring body 52, and the voice coil 4 is positioned and movable up and down in a U-shaped groove 53 formed by the first ring body 51 and the second ring body 52.

[0047] In the present embodiment, the first ring body 51 conducts a U-shaped bend downwardly at the end and then is sleeve-connected to the upper end of the vertical portion 12. The second ring body 52 is sleeve-connected to the lower end of the spring washer 3.

[0048] In the loudspeaker magnetic circuit system of the present embodiment, the short-circuit ring is made into a U-shaped structure comprising a first ring body and a second ring body and the first ring body and second ring body are respectively sleeve-connected with the vertical portion and spring washer such that the overall magnetic circuit system becomes stable and variations in non-linear inductance within the magnetic circuit system decrease to reduce distortion for effectively reducing the harmonic distortion and non-linear distortion of loudspeaker, and the U-shaped short-circuit ring can slow down the increase of electrical resistance for the voice coil with the frequency so as to increase the frequency response output range of loudspeaker, enhance the overall acoustic performance of the speaker and improve the sound quality of loudspeaker.

Embodiment 3

[0049] FIG. 4 illustrates a section view of the loudspeaker magnetic circuit system having a U-shaped short-circuit ring in Embodiment 3. As shown in FIG. 4, a loudspeaker magnetic circuit system having a U-shaped short-circuit ring comprises a T-shaped iron 1, a magnetic steel 2, a spring washer 3, a voice coil 4 and a U-shaped short-circuit ring 5. The T-shaped iron 1 includes a transverse portion 11 and a vertical portion 12 vertically disposed above the center of the transverse portion 11. The magnetic steel 2 and the spring washer 3 are disposed in turn above the transverse portion 11, i.e. the magnetic steel 2 and the spring washer 3 are located in turn above the transverse portion 11. The inner side of the spring washer 3 is closer to the vertical portion 12 than the inner side of the magnetic steel 2. A T iron gap slot 13 is formed between the magnetic steel 2, the spring washer 3 and the vertical portion 12, and the voice coil 4 and the U-shaped short-circuit ring 5 are positioned in the T iron gap slot 13.

[0050] The bottom of the U-shaped short-circuit ring 5 is positioned at the intersection of the transverse portion 11 and the vertical portion 12 of the T-shaped iron 1. The U-shaped short-circuit 5 is fitted closely with the T-shaped iron 1 to reduce the effects on the magnetic gap space for the stability of the magnetic circuit system.

[0051] Further, the U-shaped short-circuit ring 5 comprises a first ring body 51 and a second ring body 52, and the voice coil 4 is positioned and movable up and down in a U-shaped groove 53 formed by the first ring body 51 and the second ring body 52.

[0052] In the present embodiment, a protrusion 14 is formed outward from above the vertical portion 12 and the first ring body 51 is sleeve-connected to the lower end of the protrusion 14. The second ring body 52 is sleeve-connected to the lower end of the spring washer 3.

[0053] In the loudspeaker magnetic circuit system of the present embodiment, the short-circuit ring is made into a U-shaped structure comprising a first ring body and a second ring body and the first ring body and second ring body are respectively sleeve-connected with the vertical portion and spring washer such that the overall magnetic circuit system becomes stable and variations in non-linear inductance within the magnetic circuit system decrease to reduce distortion for effectively reducing the harmonic distortion and non-linear distortion of loudspeaker, and the U-shaped short-circuit ring can slow down the increase of electrical resistance for the voice coil with the frequency so as to increase the frequency response output range of loudspeaker, enhance the overall acoustic performance of the speaker and improve the sound quality of loudspeaker.

Embodiment 4

[0054] The vertical portion 12 in specific embodiments of the invention may be referred to as bottom portion 61. In the same way, sometimes the transverse portion 11 may be referred to as protruding portion 62.

[0055] FIG. 5 illustrates a section view of the loudspeaker magnetic circuit system having the U-shaped short-circuit ring in Embodiment 4. As shown in FIG. 5, a loudspeaker magnetic circuit system having a U-shaped short-circuit ring comprises a U-shaped iron 6, a magnetic steel 2, a spring washer 3, a voice coil 4 and a U-shaped short-circuit ring 5. The U-shaped iron 6 includes a bottom portion 61 and a protruding portion 62 extending upward from the bottom portion 61. The magnetic steel 2 and the spring washer 3 are disposed in turn above the bottom portion 61, i.e. the magnetic steel 2 and the spring washer 3 are located in turn above the bottom portion 61. It should be noted that the width of the spring washer 3 is greater than the width of the magnetic steel 2. A U iron gap slot 63 is formed between the magnetic steel 2, spring washer 3 and the protruding portion 62, and the voice coil 4 and the U-shaped short-circuit ring 5 is positioned in the U iron gap slot 63.

[0056] The bottom of the U-shaped short-circuit ring 5 is positioned at the intersection of the bottom portion 61 and the protruding portion 62 of the T-shaped iron 6 and the U-shaped short-circuit 5 is fitted closely with the U-shaped iron 6 to reduce the effects on the magnetic gap space for the stability of the magnetic circuit system.

[0057] Further, the U-shaped short-circuit ring 5 comprises a first ring body 51 and a second ring body 52, and the voice coil 4 is positioned and movable up and down in a U-shaped groove 53 formed by the first ring body 51 and the second ring body 52.

[0058] In the present embodiment, the first ring body 51 conducts a U-shaped bend downwardly at the end and then is sleeve-connected to the upper end of the spring washer 3. The second ring body 52 conducts a U-shaped bend downwardly at the end and then is sleeve-connected to the upper end of the spring washer 62.

[0059] In the loudspeaker magnetic circuit system of the present embodiment, the short-circuit ring is made into a U-shaped structure comprising a first ring body and a second ring body and the first ring body and second ring body are respectively sleeve-connected with the protruding portion and spring washer such that the overall magnetic circuit system becomes stable and variations in non-linear inductance within the magnetic circuit system decrease to reduce distortion for effectively reducing the harmonic distortion and non-linear distortion of loudspeaker, and the U-shaped short-circuit ring can slow down the increase of electrical resistance for the voice coil with the frequency so as to increase the frequency response output range of loudspeaker, enhance the overall acoustic performance of the speaker and improve the sound quality of loudspeaker.

Embodiment 5

[0060] FIG. 6 illustrates a section view of the loudspeaker magnetic circuit system having the U-shaped short-circuit ring in Embodiment 5. As shown in FIG. 6, a loudspeaker magnetic circuit system having a U-shaped short-circuit ring comprises a U-shaped iron 6, a magnetic steel 2, a spring washer 3, a voice coil 4 and a U-shaped short-circuit ring 5. The U-shaped iron 6 includes a bottom portion 61 and a protruding portion 62 extending upward from the bottom portion 61. The magnetic steel 2 and the spring washer 3 are disposed in turn above the bottom portion 61, i.e. the magnetic steel 2 and the spring washer 3 are located in turn above the bottom portion 61. The width of the spring washer 3 is greater than the width of the magnetic steel 2. A U iron gap slot 63 is formed between the magnetic steel 2, spring washer 3 and the protruding portion 62, and the voice coil 4 and the U-shaped short-circuit ring 5 is positioned in the U iron gap slot 63.

[0061] The bottom of the U-shaped short-circuit ring 5 is positioned at the intersection of the bottom portion 61 and the protruding portion 62 of the T-shaped iron 6 and the U-shaped short-circuit 5 is fitted closely with the U-shaped iron 6 to reduce the effects on the magnetic gap space for the stability of the magnetic circuit system.

[0062] Further, the U-shaped short-circuit ring 5 comprises a first ring body 51 and a second ring body 52, and the voice coil 4 is positioned and movable up and down in a U-shaped groove 53 formed by the first ring body 51 and the second ring body 52.

[0063] In the present embodiment, a protruding block 64 is formed inward from above the protruding portion 62 and the second ring body 52 is sleeve-connected to the lower end of the protruding block 64. The first ring body 51 conducts a U-shaped bend downwardly at the end and then is sleeve-connected to the upper end of the spring washer 3.

[0064] In the loudspeaker magnetic circuit system of the present embodiment, the short-circuit ring is made into a U-shaped structure comprising a first ring body and a second ring body and the first ring body and second ring body are respectively sleeve-connected with the protruding portion and spring washer such that the overall magnetic circuit system becomes stable and variations in non-linear inductance within the magnetic circuit system decrease to reduce distortion for effectively reducing the harmonic distortion and non-linear distortion of loudspeaker, and the U-shaped short-circuit ring can slow down the increase of electrical resistance for the voice coil with the frequency so as to increase the frequency response output range of loudspeaker, enhance the overall acoustic performance of the speaker and improve the sound quality of loudspeaker.

Embodiment 6

[0065] FIG. 7 illustrates a section view of the loudspeaker magnetic circuit system having the U-shaped short-circuit ring in Embodiment 6. As shown in FIG. 7, a loudspeaker magnetic circuit system having a U-shaped short-circuit ring comprises a U-shaped iron 6, a magnetic steel 2, a spring washer 3, a voice coil 4 and a U-shaped short-circuit ring 5. The U-shaped iron 6 includes a bottom portion 61 and a protruding portion 62 extending upward from the bottom portion 61. The magnetic steel 2 and the spring washer 3 are disposed in turn above the bottom portion 61, i.e. the magnetic steel 2 and the spring washer 3 are located in turn above the bottom portion 61. The width of the spring washer 3 is greater than the width of the magnetic steel 2. A U iron gap slot 63 is formed between the magnetic steel 2, spring washer 3 and the protruding portion 62, and the voice coil 4 and the U-shaped short-circuit ring 5 is positioned in the U iron gap slot 63.

[0066] The bottom of the U-shaped short-circuit ring 5 is positioned at the intersection of the bottom portion 61 and the protruding portion 62 of the T-shaped iron 6 and the U-shaped short-circuit 5 is fitted closely with the U-shaped iron 6 to reduce the effects on the magnetic gap space for the stability of the magnetic circuit system.

[0067] Further, the U-shaped short-circuit ring 5 comprises a first ring body 51 and a second ring body 52, and the voice coil 4 is positioned and movable up and down in a U-shaped groove 53 formed by the first ring body 51 and the second ring body 52.

[0068] In the present embodiment, a protruding block 64 is formed inward from above the protruding portion 62 and the second ring body 52 is sleeve-connected to the lower end of the protruding block 64. The first ring body 51 is sleeve-connected to the lower end of the spring washer 3.

[0069] In the loudspeaker magnetic circuit system of the present embodiment, the short-circuit ring is made into a U-shaped structure comprising a first ring body and a second ring body and the first ring body and second ring body are respectively sleeve-connected with the protruding portion and spring washer such that the overall magnetic circuit system becomes stable and variations in non-linear inductance within the magnetic circuit system decrease to reduce distortion for effectively reducing the harmonic distortion and non-linear distortion of loudspeaker, and the U-shaped short-circuit ring can slow down the increase of electrical resistance for the voice coil with the frequency so as to increase the frequency response output range of loudspeaker, enhance the overall acoustic performance of the speaker and improve the sound quality of loudspeaker.

[0070] The foregoing is merely illustrative and illustrative of the structure of the invention, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention. It should be noted that various modifications and improvements can be made by those skilled in the art without departing from the spirit of the invention, and these obvious alternatives are within the scope of the present invention.

LIST

[0071] 1. T-shaped iron [0072] 2. Magnetic steel [0073] 3. Spring washer [0074] 4. Voice coil [0075] 5. U-shaped short-circuit ring [0076] 6. U-shaped iron [0077] 7. Inner side of spring washer (3) [0078] 8. Inner side of magnetic steel (2) [0079] 11 Transverse portion (of T-shaped iron 2) [0080] 12 Vertical portion (of T-shaped iron 2) [0081] 13 T iron gap slot [0082] 14 Protrusion (of vertical portion 12) [0083] 51. First ring body [0084] 52. Second ring body [0085] 53. U-shaped groove [0086] 61. Bottom portion (of U-shaped iron 6) [0087] 62. Protruding portion (of U-shaped iron 6) [0088] 63. U iron gap slot [0089] 64. Protruding block (of protruding portion 62)