CN215818598U

CN215818598U - Internal and external double magnetic horn

Info

Publication number: CN215818598U
Application number: CN202121982494.XU
Authority: CN
Inventors: 何越
Original assignee: Shenzhen Yuanze Electronics Co ltd
Current assignee: Shenzhen Yuanze Electronics Co ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-02-11
Anticipated expiration: 2031-08-23

Abstract

The utility model belongs to the technical field of electronic equipment, and particularly relates to an internal and external dual-magnetic loudspeaker which comprises a top cover, a face cover, a PCB (printed circuit board) and a moving coil unit, wherein the top cover is arranged on the top cover; the moving coil unit comprises a washer, a T iron, and an internal magnet and an external magnet which are arranged inside and outside the T iron, the sum of the number of the internal magnet and the external magnet is more than three, and the magnetic force intensity of the internal magnet and the magnetic force intensity of the external magnet are different; the washer is arranged on the top of the external magnet; the surface cover is accommodated in the top cover and is arranged at the bottom of the T iron; the PCB board accept in top cap bottom, just the PCB board laminate in the bottom surface of face lid, the PCB board respectively with built-in magnet with external magnet electric connection. The method improves the tone quality without distortion, has low cost, high practicability and better hearing experience.

Description

Internal and external double magnetic horn

Technical Field

The utility model belongs to the technical field of electronic equipment, and particularly relates to an internal and external dual-magnetic loudspeaker.

Background

The loudspeaker is a transducer for converting an electric signal into an acoustic signal, and the quality of the loudspeaker greatly affects the sound quality. The loudspeaker is the weakest component in the audio equipment, and is the most important component for the audio effect. Loudspeakers are of a wide variety and vary widely in price. The audio frequency electric energy makes the paper cone or the diaphragm vibrate and generate resonance (resonance) with the surrounding air through electromagnetic, piezoelectric or electrostatic effect to make sound.

The existing loudspeaker cannot well adjust the high-low audio frequency, if the high frequency is not enough, the high frequency is generally enhanced, the difficulty is high, the cost is high, and the traditional method for adjusting the high-low audio frequency of the loudspeaker easily causes tone quality distortion, so that the use experience is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an internal and external dual-magnetic loudspeaker, and aims to solve the technical problems that the loudspeaker in the prior art cannot well adjust high and low audio frequencies, tone quality distortion is easily caused, and use experience is affected.

In order to achieve the above object, an internal and external dual-magnetic speaker according to an embodiment of the present invention includes a top cover, a face cover, a PCB, and a moving coil unit;

the moving coil unit comprises a washer, a T iron, and an internal magnet and an external magnet which are arranged inside and outside the T iron, the sum of the number of the internal magnet and the external magnet is more than three, and the magnetic force intensity of the internal magnet and the magnetic force intensity of the external magnet are different; the washer is arranged on the top of the external magnet;

the surface cover is accommodated in the top cover and is arranged at the bottom of the T iron;

the PCB board accept in top cap bottom, just the PCB board laminate in the bottom surface of face lid, the PCB board respectively with built-in magnet with external magnet electric connection.

Optionally, the internal magnet and the external magnet are both two pieces, the two internal magnets are attached to each other, and the two external magnets are attached to each other.

Optionally, the magnetic force of the internal magnet located on the upper layer is smaller than the magnetic force strength of the internal magnet located on the lower layer, and the magnetic force of the external magnet located on the upper layer is smaller than the magnetic force strength of the external magnet located on the lower layer.

Optionally, the top cover comprises a protective shell, a diaphragm and a voice coil; the sound film, the voice coil, the moving coil unit, the face cover and the PCB are all contained in the protective shell, and a sound hole is formed in the middle of the protective shell; the sound film is arranged above the washer; the voice coil is connected to the bottom of the voice diaphragm and located between the internal magnet and the external magnet.

Optionally, the periphery of the sound membrane extends downwards to form a limiting part; the surface of the washer is provided with a limiting bulge upwards, and the limiting bulge is annularly arranged and used for limiting the limiting part.

Optionally, the side end of the protective shell is provided with an open slot, and an opening of the open slot extends to the bottom of the protective shell.

Optionally, the T-iron is recessed upwards to form a containing groove for containing the built-in magnet; and a through hole for avoiding the built-in magnet is arranged in the middle of the external magnet.

Optionally, the bottom of the T-iron is recessed inwards to form a limiting groove, and the upper edge of the face cover is limited in the limiting groove.

Optionally, a plurality of round holes are formed in the T iron, and the round holes are uniformly arranged at intervals; the middle part of the face cover is provided with a circular hole.

One or more technical schemes in the internal and external dual-magnetic horn provided by the embodiment of the utility model have at least one of the following technical effects: the utility model provides an internal and external dual-magnetic horn. The moving coil unit is accommodated in a cavity formed between the top cover and the face cover, and the internal magnet and the external magnet are placed inside and outside the T iron, so that the internal magnet and the external magnet are separated; the sum of the number of the internal magnets and the number of the external magnets is more than three, when the number of the internal magnets is at least one, the two external magnets are arranged in a vertically stacked mode, so that the two external magnets have height difference, and because the magnetic forces of the two external magnets are different, a torque ratio can be generated, so that the audio frequency is changed, the high frequency and the low frequency of the audio frequency are clearer, and the auditory effect is better; when the magnetic force of the at least one external magnet and the at least two internal magnets is different, a moment ratio can be generated, so that the audio frequency is changed, the high frequency and the low frequency of the audio frequency are clearer, and the auditory effect is better; therefore, the method improves the tone quality without distortion of tone quality, has low cost, high practicability and better auditory experience.

Drawings

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

Fig. 1 is a schematic structural diagram of an internal and external dual-magnetic horn according to an embodiment of the present invention.

Fig. 2 is a sectional view of an internal and external dual-magnetic horn according to an embodiment of the present invention.

Fig. 3 is an enlarged schematic view of a point a in fig. 3.

Fig. 4 is an exploded view of the top cover according to the embodiment of the present invention.

Fig. 5 is an exploded view of the moving coil unit according to the embodiment of the present invention.

Fig. 6 is a schematic structural diagram of an internal and external dual-magnetic horn according to an embodiment of the present invention.

Wherein each reference numeral in the figures

10-top cover 11-protective shell 12-sound film

13-voice coil 20-face cover 21-abutting part

22-circular hole 30-PCB 40-moving coil unit

41-washer 42-T iron 43-built-in magnet

44-external magnet 111-sound hole 112-open slot

113 positioning part 121 limiting part 411 limiting protrusion

421-containing groove 422-limiting groove 423-round hole

441-through hole.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1-6 are exemplary and intended to be used to illustrate embodiments of the utility model, and should not be construed as limiting the utility model.

In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In one embodiment of the present invention, as shown in fig. 1 to 5, an inside and outside dual magnetic speaker is provided, which includes a top cover 10, a face cover 20, a PCB 30 and a moving coil unit 40.

The moving coil unit 40 comprises a washer 41, a T iron 42, and an internal magnet 43 and an external magnet 44 which are arranged inside and outside the T iron 42, wherein the sum of the number of the internal magnets 43 and the number of the external magnets 44 is more than three, and the magnetic force strength of the internal magnet 43 and the magnetic force strength of the external magnet 44 are different; the washer 41 is mounted on top of the external magnet 44.

The face cover 20 is accommodated in the top cover 10, and the face cover 20 is mounted at the bottom of the T-bar 42.

The PCB 30 is received in the bottom of the top cover 10, the PCB 30 is attached to the bottom surface of the face cover 20, and the PCB 30 is electrically connected to the internal magnet 43 and the external magnet 44 respectively.

Specifically, the inside and outside dual-magnetic horn of the embodiment of the utility model. The moving coil unit 40 is accommodated in a cavity formed between the top cover 10 and the face cover 20, and the internal magnet 43 and the external magnet 44 are placed inside and outside the T-shaped iron 42, so that the internal magnet 43 and the external magnet 44 are separated; the sum of the number of the internal magnets 43 and the number of the external magnets 44 is more than three, when at least one internal magnet 43 and at least two external magnets 44 are provided, the two external magnets 44 are arranged in a vertically stacked manner, so that the two external magnets 44 have a height difference, and because the magnetic forces of the two external magnets 44 are different, a moment ratio is generated, so that the audio frequency is changed, the high frequency and the low frequency of the audio frequency are clearer, and the auditory effect is better; when the at least one external magnet 44 and the at least two internal magnets 43 are provided, the two internal magnets 43 are stacked up and down, so that the two internal magnets 43 have a height difference, and because the magnetic forces of the two internal magnets 43 are different, a moment ratio is generated, and the magnetic force acts on the sound film 12, so that the audio frequency is changed, the high frequency and the low frequency of the audio frequency are clearer, and the auditory effect is better; therefore, the method improves the tone quality without distortion of tone quality, has low cost, high practicability and better auditory experience.

In another embodiment of the present invention, as shown in fig. 2 to 5, the internal magnet 43 and the external magnet 44 are two pieces, the internal magnet 43 and the external magnet 44 are attached to each other. Specifically, the two internal magnets 43 are stacked and arranged on the T-iron 42, the two external magnets 44 are stacked and arranged on the T-iron 42, and the two internal magnets 43 and the two external magnets 44 are both used for better adjusting the audio frequency,

in another embodiment of the present invention, as shown in fig. 1 to 6, the magnetic force of the internal magnet 43 located at the upper layer is smaller than the magnetic force strength of the internal magnet 43 located at the lower layer, and the magnetic force of the external magnet 44 located at the upper layer is smaller than the magnetic force strength of the external magnet 44 located at the lower layer. Specifically, in this embodiment, taking the built-in magnets 43 as an example, one is N38, and the other is N45, because there is a difference in height and magnetic force, the two built-in magnets 43 will generate a torque ratio, the magnetic force of the built-in magnet 43 on the upper layer is weaker, the magnetic force of the built-in magnet 43 on the lower layer is stronger, and the torque is larger, so that the high-low audio frequency of the loudspeaker is clear through a simple structure, the cost is low, and the auditory effect is better.

In another embodiment of the present invention, as shown in fig. 1 to 4, the top cover 10 includes a protective shell 11, a diaphragm 12 and a voice coil 13; the sound film 12, the voice coil 13, the moving coil unit 40, the face cover 20 and the PCB 30 are all accommodated in the protective case 11, and a sound hole 111 is formed in the middle of the protective case 11; the sound film 12 is arranged above the washer 41; the voice coil 13 is connected to the bottom of the diaphragm 12 and is located between the internal magnet 43 and the external magnet 44. Specifically, the protective shell 11 and the face cover 20 protect the sound diaphragm 12, the voice coil 13 and the moving coil unit 40, the protective shell 11 and the washer 41 fix the sound diaphragm 12, and the sound diaphragm 12 shields the sound hole 111; the voice coil 13 vibrates the diaphragm 12 by the moving coil unit 40, specifically, the internal magnet 43 and the external magnet 44 in an energized state to generate sound waves in an effective magnetic field range of the internal magnets 43 and the external magnets 44 between the internal magnets 43 and the external magnets 44, and then the sound waves pass through the sound hole 111.

In another embodiment of the present invention, as shown in fig. 1 to 4, the periphery of the sound diaphragm 12 extends downward to form a limiting portion 121; a limiting protrusion 411 protrudes upwards from the surface of the washer 41, and the limiting protrusion 411 is annularly arranged and used for limiting the limiting part 121. Specifically, the limiting portion 121 is annularly disposed at the bottom of the sound diaphragm 12 and is disposed near the edge of the sound diaphragm 12, the outer side edge of the limiting protrusion 411 contacts with the inner side surface of the limiting portion 121, and the outer side surface of the limiting portion 121 abuts against the inner side surface of the protective shell 11, so that the sound diaphragm 12 is fixed and limited.

In another embodiment of the present invention, as shown in fig. 1 to 4, an open slot 112 is formed at a side end of the protective shell 11, and an opening of the open slot 112 extends to a bottom of the protective shell 11. Specifically, the opening groove 112 is formed in the side end of the protection shell 11, and the voice coil 13 lead welding plate is kept away, so that the voice coil 13 lead welding plate is convenient to weld, leads of elements in the protection shell 11 are convenient to draw out, and welding is convenient.

Furthermore, the bottom of the protective shell 11 is provided with a positioning portion 113 in a trumpet shape, and the opening diameter of the positioning portion 113 gradually increases in a direction away from the washer 41. Thus, the installation of the moving coil unit 40, the face cover 20 and the PCB 30 is facilitated.

In another embodiment of the present invention, as shown in fig. 1 to 5, the T-iron 42 is recessed upward to form a receiving groove 421 for receiving the built-in magnet 43; the middle part of the external magnet 44 is provided with a through hole 441 for avoiding the internal magnet 43. Specifically, the middle portion of the T-iron 42 is recessed upward to form a receiving groove 421 for receiving the internal magnet 43, the external magnet 44 is sleeved on the middle portion of the T-iron 42, the T-iron 42 separates the internal magnet 43 from the external magnet 44, and the voice coil 13 is located in the space formed by the T-iron 42 and the external magnet 44.

In another embodiment of the present invention, as shown in fig. 2 to 5, the bottom of the T-iron 42 is recessed inward to form a limiting groove 422, and the upper edge of the surface cover 20 is limited in the limiting groove 422. Specifically, the upper edge of the face cover 20 extends outward to form an abutting portion 21, and the abutting portion 21 abuts against the stopper groove 422, thereby positioning the face cover 20.

In another embodiment of the present invention, as shown in fig. 2 to 5, a plurality of round holes 423 are formed on the T-iron 42, and the round holes 423 are uniformly arranged at intervals; the middle part of the face cover 20 is provided with a circular hole 22. Specifically, a plurality of round holes 423 arranged on the T-bar 42 and the round hole 22 arranged in the middle of the face cover 20 facilitate the corresponding lead wires to be connected to the PCB 30, and a space is arranged between the top surface of the face cover 20 and the bottom surface of the T-bar 42.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides an inside and outside double-magnetic formula loudspeaker which characterized in that: the PCB comprises a top cover, a face cover, a PCB and a moving coil unit;

2. The inner and outer dual magnetic horn of claim 1, wherein: the built-in magnet and the external magnet are two pieces, the two built-in magnets are mutually attached, and the two external magnets are mutually attached.

3. The inner and outer dual magnetic horn of claim 2, wherein: the magnetic force of the built-in magnet positioned on the upper layer is smaller than the magnetic force intensity of the built-in magnet positioned on the lower layer, and the magnetic force of the external magnet positioned on the upper layer is smaller than the magnetic force intensity of the external magnet positioned on the lower layer.

4. The inside and outside dual magnetic speaker according to any one of claims 1 to 3, wherein: the top cover comprises a protective shell, a sound film and a voice coil; the sound film, the voice coil, the moving coil unit, the face cover and the PCB are all contained in the protective shell, and a sound hole is formed in the middle of the protective shell; the sound film is arranged above the washer; the voice coil is connected to the bottom of the voice diaphragm and located between the internal magnet and the external magnet.

5. The inner and outer dual magnetic horn of claim 4, wherein: the periphery of the sound film extends downwards to form a limiting part; the surface of the washer is provided with a limiting bulge upwards, and the limiting bulge is annularly arranged and used for limiting the limiting part.

6. The inner and outer dual magnetic horn of claim 4, wherein: the side of protective housing is equipped with the open slot, the opening of open slot extends to the bottom of protective housing.

7. The inside and outside dual magnetic speaker according to any one of claims 1 to 3, wherein: the T iron is sunken upwards to form an accommodating groove for accommodating the built-in magnet; and a through hole for avoiding the built-in magnet is arranged in the middle of the external magnet.

8. The inside and outside dual magnetic speaker according to any one of claims 1 to 3, wherein: the bottom of the T iron is inwards sunken to form a limiting groove, and the upper edge of the face cover is limited in the limiting groove.

9. The inside and outside dual magnetic speaker according to any one of claims 1 to 3, wherein: a plurality of round holes are formed in the T iron, and the round holes are uniformly arranged at intervals; the middle part of the face cover is provided with a circular hole.