CN215818599U

CN215818599U - External magnet type horn

Info

Publication number: CN215818599U
Application number: CN202121992094.7U
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 external magnet type loudspeaker which comprises a top cover, a face cover, a PCB (printed circuit board) and a moving coil unit, wherein the top cover is provided with a first magnetic pole and a second magnetic pole; the moving coil unit comprises a washer, T iron and external magnets arranged outside the T iron, the number of the external magnets is more than two, the magnetic force intensity of each external magnet is different, and the external magnets are vertically attached to each other; 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 laminating in the bottom surface of face lid, the PCB board with each external magnet electric connection. Because the magnetic force of two external magnets is 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, the auditory effect is better, the structure is simple, and the cost is low.

Description

External magnet type horn

Technical Field

The utility model belongs to the technical field of electronic equipment, and particularly relates to an external magnet type 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 horn comprises an internal magnetic type horn and an external magnetic type horn, the magnetic field of the internal magnetic type horn is in the horn, the magnetic field is not existed outside the horn, and the existing horn is generally used as a built-in horn of a CRT television, a CRT display and the like (namely, the existing horn is suitable for places which are easily influenced by the magnetic field); the external magnetic horn magnetic field is outside the horn, and no antimagnetic treatment is carried out, so that a strong magnetic field is arranged outside the horn, and in order to improve the electroacoustic efficiency, the horn of the large sound box is an external magnetic horn with large volume and strong magnetic force; the existing external magnetic loudspeaker is only provided with a single magnet, so that the high-low audio frequency cannot be well adjusted, 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 to influence the use experience.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an external magnet type 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 influenced.

In order to achieve the above object, an external magnet type speaker provided in an embodiment of the present invention includes a top cover, a face cover, a PCB board, and a moving coil unit; the moving coil unit comprises a washer, T iron and external magnets arranged outside the T iron, the number of the external magnets is more than two, the magnetic force intensity of each external magnet is different, and the external magnets are vertically attached to each other; 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 laminating in the bottom surface of face lid, the PCB board with each external magnet electric connection.

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 is positioned on the inner side of 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 bottom of protective housing is equipped with the location portion that is the loudspeaker form setting, the bore of location portion is toward keeping away from the direction of china increases gradually.

Optionally, the middle part of the T iron is upwards protruded to form a convex part; the middle part of external magnet is equipped with keeps away the sky the through-hole of bellying, the voice coil loudspeaker voice coil stretches into in the through-hole.

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 external magnet type loudspeaker provided by the embodiment of the utility model at least have one of the following technical effects: according to the external magnet type loudspeaker provided by the embodiment of the utility model, the moving coil unit is accommodated in a cavity formed between the top cover and the face cover, and at least two external magnets are stacked on the T iron; two external magnets are stacked up and down, so that the height difference exists between the two external magnets, the torque ratio can be generated due to the fact that the magnetic force of the two external magnets is different, the audio frequency is changed, the high frequency and the low frequency of the audio frequency are clearer, the hearing effect is better, and the structure is simple and low in cost.

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 external magnet type speaker according to an embodiment of the present invention.

Fig. 2 is a cut-away view of an external magnet type 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 the external magnet type speaker according to another view angle provided in the 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-external magnet

111-sound hole 112-open slot 113-positioning part

121-spacing part 411-spacing projection 421-projection part

422, a limiting groove 423, a round hole 431 and a 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 6, an external magnet type 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 external magnets 43 arranged outside the T iron, wherein the number of the external magnets 43 is more than two; the strength of the magnetic force of each external magnet 43 is different, and the external magnets 43 are vertically attached; the washer 41 is mounted on top of the external magnet 43. 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 accommodated 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 with the external magnet 43.

Specifically, in the external magnet type horn according to the embodiment of the present invention, the moving coil unit 40 is accommodated in a cavity formed between the top cover 10 and the face cover 20, and at least two external magnets 43 are stacked on the T-iron 42; two external magnets 43 are range upon range of setting from top to bottom for there is the difference in height two external magnets 43, because the magnetic force of two external magnets 43 is different, then can produce the moment ratio, thereby changes the audio frequency, makes the high low frequency of audio frequency more clear, and the auditory effect is better, and simple structure is with low costs. In this embodiment, the upper strata the magnetic force of external magnet 43 is less than the magnetic strength of the external magnet 43 of lower floor, for example, two external magnets 43, the upper strata is N38, the lower floor is N45, owing to there is difference in height and magnetic force size, two external magnets 43 can produce the moment ratio, the magnetic force of the external magnet 43 of upper strata is relatively weak, the magnetic force of the external magnet 43 of lower floor is stronger, moment is great, make sound membrane 12 produce the vibrations of high-low audio frequency, so, the high-low audio frequency that realizes loudspeaker through simple structure is clear, and is low in cost, 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 voice diaphragm 12 and is located inside the external magnet 43. 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 is located in each position magnet 43, and vibrates the diaphragm 12 by the moving coil unit 40 in an energized state within an effective magnetic field range of each external magnet 43 to generate sound waves, 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 middle of the T-iron 42 is protruded upwards to form a protrusion 421; the middle part of the external magnet 43 is provided with a through hole 431 for keeping away the protruding part 421, and the voice coil 13 extends into the through hole 431. Specifically, the external magnet 43 is sleeved on the middle portion of the T-bar 42, and the voice coil 13 is located between the protruding portion 421 and the external magnet 43.

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 horizontally 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 external magnet formula loudspeaker which characterized in that: the PCB comprises a top cover, a face cover, a PCB and a moving coil unit; the moving coil unit comprises a washer, T iron and external magnets arranged outside the T iron, the number of the external magnets is more than two, the magnetic force intensity of each external magnet is different, and the external magnets are vertically attached to each other; 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 laminating in the bottom surface of face lid, the PCB board with each external magnet electric connection.

2. The external magnet type horn according to claim 1, 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 is positioned on the inner side of the external magnet.

3. The external magnet type horn according to claim 2, 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.

4. The external magnet type horn according to claim 2, wherein: the side of protective housing is equipped with the open slot, the opening of open slot extends to the bottom of protective housing.

5. The external magnet type horn according to claim 2, wherein: the bottom of protective housing is equipped with the location portion that is the loudspeaker form setting, the bore of location portion is toward keeping away from the direction of china increases gradually.

6. The external magnet type horn according to claim 2, wherein: the middle part of the T iron protrudes upwards to form a protruding part; the middle part of external magnet is equipped with keeps away the sky the through-hole of bellying, the voice coil loudspeaker voice coil stretches into in the through-hole.

7. The external magnet type loudspeaker according to any one of claims 1 to 6, 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.

8. The external magnet type loudspeaker according to any one of claims 1 to 6, 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.