CN212992593U - Magnetic circuit system of loudspeaker and loudspeaker - Google Patents

Abstract

The utility model discloses a magnetic circuit and speaker of speaker, magnetic circuit wherein includes: the method comprises the following steps: the steel magnet, the metal ring, the T iron and the upper clamping plate; the T iron comprises: a chassis and a cylindrical magnetizer; the central through hole of the magnetic steel is sleeved on the magnetizer, and the bottom of the magnetic steel is contacted with the chassis; the metal ring is sleeved on the magnetizer and is positioned in the central through hole of the magnetic steel; the central through hole of the upper clamping plate is sleeved on the magnetizer, the magnetic steel is positioned between the upper clamping plate and the chassis, and the top of the magnetic steel and the top of the metal ring are respectively bonded with the upper clamping plate through a binder. The utility model discloses a magnetic circuit and speaker of speaker can avoid because of the speaker inductance is higher, the second harmonic distortion is great, and vibration noise is great to influence the phenomenon of the listening effect of speaker, can effectively improve performance such as inductance, frequency width, sensitivity, the distortion of speaker, improved product quality and user's degree of experience.

Description

Magnetic circuit system of loudspeaker and loudspeaker

Technical Field

The utility model relates to a speaker technical field especially relates to a magnetic circuit and speaker of speaker.

Background

Loudspeakers, such as automotive loudspeakers, generally employ a structure in which a cone is fitted with a positioning support (also called a centering support, damper). With the development of automobile manufacturing industry and the improvement of living standard of people, the requirements on an automobile audio and video system are higher and higher, so that the requirements on the sound effect of a vehicle-mounted audio and video system are higher and higher. The existing loudspeaker affects the listening effect due to higher inductance and larger distortion, and although the third harmonic distortion and the inductance can be reduced by some technical schemes, the inductance curve and the second harmonic distortion cannot be effectively improved.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a magnetic circuit system of a speaker and a speaker, which can solve the above problems.

According to an aspect of the present invention, there is provided a magnetic circuit system of a speaker, including: the steel magnet, the metal ring, the T iron and the upper clamping plate; the T iron comprises: a chassis and a cylindrical magnetizer; the central through hole of the magnetic steel is sleeved on the magnetizer, and the bottom of the magnetic steel is contacted with the chassis; the metal ring is sleeved on the magnetizer and is positioned in the central through hole of the magnetic steel; the central through hole of the upper clamping plate is sleeved on the magnetizer, the magnetic steel is positioned between the upper clamping plate and the chassis, wherein the top of the magnetic steel and the top of the metal ring are respectively bonded with the upper clamping plate through a binder.

Optionally, a positioning groove is formed in the bottom of the upper clamping plate, and a positioning table matched with the positioning groove is arranged at the top of the metal ring.

Optionally, a gap is formed between the outer wall of the metal ring and the inner wall of the central through hole of the magnetic steel; and a gap is formed between the inner wall of the metal ring and the magnetizer.

Optionally, the cross sections of the upper clamping plate and the magnetic steel are both circular ring structures.

Optionally, a zinc coating is arranged on the surfaces of the T iron and the upper clamping plate.

Optionally, a groove is arranged at the top of the magnetizer, and a counter bore is arranged at the bottom of the chassis.

Optionally, the chassis is cylindrical or circular truncated cone-shaped, wherein when the chassis is circular truncated cone-shaped, a generatrix of the chassis is a straight line.

Optionally, the material of the metal ring includes: copper and aluminum.

According to another aspect of the present invention, there is provided a speaker including the magnetic circuit system of the speaker as described above.

The utility model discloses a magnetic circuit and speaker of speaker can avoid because of the speaker inductance is higher, the second harmonic distortion is great, and vibration noise is great to influence the phenomenon of the listening effect of speaker, can effectively improve performance such as inductance, frequency width, sensitivity, the distortion of speaker.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive laboriousness.

Fig. 1 is a schematic view of an embodiment of a magnetic circuit system of a speaker according to the present invention;

fig. 2 is a schematic view of a metal ring in an embodiment of a magnetic circuit system of a speaker according to the present invention;

fig. 3A to 3D are schematic diagrams illustrating comparison of performance of the magnetic circuit system with an aluminum metal ring.

Detailed Description

The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. The technical solution of the present invention is described in many aspects with reference to the drawings and the embodiments.

As shown in fig. 1-2, the present invention provides a magnetic circuit system of a speaker, comprising: the magnetic steel 1, the metal ring 3, the T iron and the upper clamping plate 4; the T iron comprises a chassis 22 and a cylindrical magnetizer 21; the central through hole of the magnetic steel 1 is sleeved on the magnetizer 21, and the bottom of the magnetic steel 1 is contacted with the chassis 22.

The metal ring 3 is sleeved on the magnetizer 21 and is positioned in the central through hole of the magnetic steel 1. The central through hole of the upper clamp plate 4 is sleeved on the magnetizer 21, and the magnetic steel 1 is positioned between the upper clamp plate 4 and the chassis 22. The top of the metal ring 3 is contacted and connected with the upper clamping plate 4, and various connecting modes can be adopted. For example, the top of the magnetic steel 1 and the top of the metal ring 3 are respectively bonded to the upper clamping plate 4 by an adhesive. The binder may be an insulating adhesive or the like.

The material of the metal ring 3 may be any material having high conductivity, such as copper or aluminum, and an aluminum ring is generally used. Install becket 3 on punch holder 4, can play the effect of short circuit, can reduce the distortion, improve the inductance curve, promote the sensitivity of high frequency simultaneously, the high frequency response of extension speaker, reduction inductance that can be better improves the symmetry of inductance curve, reduces the second harmonic distortion simultaneously, improves tone quality.

In one embodiment, the upper clamp plate 4 may have a variety of configurations, and the magnetic density in or near the magnetic gap between the upper clamp plate 4 and the T-iron is increased to improve speaker sensitivity.

The surfaces of the upper clamping plate 4 and the T iron are provided with zinc plating layers. The bottom of the upper clamping plate 4 is provided with a positioning groove, and the top of the metal ring 3 is provided with a positioning table 31 matched with the positioning groove. When mounting, the positioning table 31 is inserted into the positioning groove at the bottom of the upper clamping plate 4. The positioning table 31 and the positioning groove are both annular, and the sizes of the positioning table 31 and the positioning groove can be set according to specific loudspeakers.

The outer wall of the metal ring 3 is not contacted with the inner wall of the central through hole of the magnetic steel 1, and a gap is arranged between the inner wall of the metal ring 3 and the magnetizer 21. The central line of the central through hole of the magnetic steel 1 and the central line of the metal ring 3 are superposed with the central line of the magnetizer 21.

The magnetic steel 1 can be ferrite magnetic steel. The top of the magnetizer 21 is provided with a groove 23, so that the magnetic saturation density at the counter sink at the upper part of the magnetizer is reduced. A counterbore 24 is provided in the bottom of the base plate 22. The chassis 22 may be cylindrical or circular truncated cone-shaped, and when the chassis 22 is circular truncated cone-shaped, a generatrix of the chassis 22 is a straight line or an arc line. The chassis 22 is provided with an inclined surface, so that the volume and the weight of the T iron can be reduced, and the magnetic conductivity is increased.

In one embodiment, if the metal ring 3 as the short-circuit ring is not added to the magnetic circuit system of the speaker, the tail of the impedance curve of the speaker rises, the inductance is high, the distortion is high, the sensitivity is low, the vibration noise is high, and the listening effect is affected.

The aluminum metal ring 3 is assembled on the upper clamping plate 4 to serve as an aluminum short-circuit ring, the metal ring 3 is adhered and fixed in the upper clamping plate 4 by glue on the upper clamping plate 4, distortion can be reduced, an inductance curve can be improved, the bandwidth can be expanded, the sensitivity can be improved, the distortion can be reduced, and the listening effect of the loudspeaker can be improved.

The aluminum metal ring 3 is added to the magnetic circuit system, and the inductance curves of the magnetic circuit system before and after the addition of the aluminum metal ring 3 are compared, as shown in fig. 3A and 3B, the aluminum metal ring 3 is added to the magnetic circuit system, so that the inductance can be reduced, and the inductance curves are symmetrical. The magnetic circuit system is added with the aluminum metal ring 3, as shown in fig. 3C, which can expand the high frequency response of the speaker and improve the sensitivity of high frequency. The magnetic circuit system is added with the metal ring 3 made of aluminum, as shown in fig. 3D, which can reduce the second harmonic distortion, reduce the vibration noise caused by the inductance, and improve the listening effect.

In one embodiment, a loudspeaker, for example an external magnetic loudspeaker, is provided, comprising a magnetic circuit system of a loudspeaker as above.

The magnetic circuit system of the loudspeaker and the loudspeaker in the embodiment can avoid the phenomenon that the listening effect of the loudspeaker is influenced due to the fact that the inductance of the loudspeaker is high, the distortion of the second harmonic wave is large, and the vibration noise is large, can effectively improve the performances of the loudspeaker such as the inductance, the frequency width, the sensitivity and the distortion, better meet the customer demands, and improve the product quality and the user experience.

Any technical solution disclosed in the present invention is, unless otherwise stated, disclosed a numerical range if it is disclosed, and the disclosed numerical range is a preferred numerical range, and any person skilled in the art should understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Because numerical value is more, can't be exhaustive, so the utility model discloses just disclose some numerical values with the illustration the technical scheme of the utility model to, the numerical value that the aforesaid was enumerated should not constitute right the utility model discloses create the restriction of protection scope.

Also, above-mentioned the utility model discloses if disclose or related to mutually fixed connection's spare part or structure, then, except that other the note, fixed connection can understand: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).

In addition, the terms used in any aspect of the present disclosure as described above to indicate positional relationships or shapes include similar, analogous, or approximate states or shapes unless otherwise stated. The utility model provides an arbitrary part both can be assembled by a plurality of solitary component parts and form, also can be the solitary part that the integrated into one piece technology was made.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.

Claims (9)

1. A magnetic circuit system for a speaker, comprising:

the steel magnet, the metal ring, the T iron and the upper clamping plate; the T iron comprises: a chassis and a cylindrical magnetizer; the central through hole of the magnetic steel is sleeved on the magnetizer, and the bottom of the magnetic steel is contacted with the chassis; the metal ring is sleeved on the magnetizer and is positioned in the central through hole of the magnetic steel; the central through hole of the upper clamping plate is sleeved on the magnetizer, the magnetic steel is positioned between the upper clamping plate and the chassis, wherein the top of the magnetic steel and the top of the metal ring are respectively bonded with the upper clamping plate through a binder.

2. The system of claim 1,

the bottom of the upper clamping plate is provided with a positioning groove, and the top of the metal ring is provided with a positioning table matched with the positioning groove.

3. The system of claim 1,

a gap is formed between the outer wall of the metal ring and the inner wall of the central through hole of the magnetic steel; and a gap is formed between the inner wall of the metal ring and the magnetizer.

4. The system of claim 1,

the cross sections of the upper clamping plate and the magnetic steel are both of circular ring structures.

5. The system of claim 1,

and a zinc coating is arranged on the surfaces of the upper clamping plate and the T iron.

6. The system of claim 1,

the top of the magnetizer is provided with a groove, and the bottom of the chassis is provided with a counter bore.

7. The system of claim 1,

the chassis is cylindrical or circular truncated cone-shaped, wherein when the chassis is circular truncated cone-shaped, a bus of the chassis is a straight line or an arc line.

8. The system of claim 1,

the metal ring is made of the following materials: copper and aluminum.

9. A loudspeaker, characterized by:

a magnetic circuit system comprising a loudspeaker as claimed in any one of claims 1 to 8.

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