CN216291423U - Loudspeaker - Google Patents

Abstract

The embodiment of the utility model discloses a loudspeaker, wherein a washer is arranged in the loudspeaker, the washer comprises a plurality of constituent units and insulating layers arranged among the constituent units, a magnetic bowl, a magnet and the washer in the loudspeaker form a magnetic circuit system, and a magnetic gap is formed between the washer and the magnetic bowl. By changing the internal structure of the washer, the length and the cross-sectional area of the circulated induced current on the washer are reduced. Therefore, the resistivity of the washer is increased, and the induced current generated in the washer is reduced, so that the energy loss of the loudspeaker is reduced, and the service life is prolonged.

Description

Loudspeaker

Technical Field

The utility model relates to the field of audio equipment, in particular to a loudspeaker.

Background

The loudspeaker is an electroacoustic transducer, wherein a moving coil loudspeaker is provided, and a voice coil is positioned in a magnetic gap generated by a magnetic circuit system. When the voice coil in the magnetic field is electrified, the voice coil can drive the vibrating diaphragm to vibrate under the action of ampere force, so that sound is produced. And the voice coil still can produce the magnetic field after the circular telegram, and this magnetic field can act on the china department for the inside induced current that produces of china department then generates heat. This indirectly results in a loss of energy of the loudspeaker, which also reduces the life time of the loudspeaker.

SUMMERY OF THE UTILITY MODEL

In view of this, embodiments of the present invention provide a speaker, in which a washer is configured to be composed of a plurality of portions, so as to increase the resistivity of the washer, thereby reducing the generation of induced current.

The speaker of the embodiment of the utility model comprises:

a magnetic bowl;

the magnet is arranged in the magnetic bowl;

the washer is provided with a plurality of component units and insulating layers arranged among the component units, and the washer is arranged in the magnetic bowl and positioned above the magnet;

wherein the magnetic bowl, the magnet and the washer form a magnetic circuit system and a magnetic gap is formed between the washer and the magnetic bowl.

Further, the plurality of constituent units are stacked in the magnetic bowl in a multi-layer and/or multi-lobe manner.

Furthermore, the composition unit is a plurality of circular sheet metal sheets which are stacked along the thickness direction of the magnetic bowl.

Further, the composition unit is a plurality of fan-shaped metal sheets arranged along the circumferential direction of the magnetic bowl.

Further, the component unit comprises a circular metal sheet and at least one annular metal sheet which are nested and arranged along the radial direction of the magnetic bowl.

Further, the number of the constituent units is 2, 3, or 4.

Further, the component unit is at least one of a silicon steel component, a nickel-iron alloy component or a permalloy component.

Further, the insulating layer is at least one of insulating paint or insulating glue.

Further, the speaker further includes:

vibrating diaphragm;

the voice coil is connected with the vibrating diaphragm and arranged in the magnetic gap;

a terminal electrically connected to the voice coil and having a contact.

Further, the speaker further includes:

a grid;

the terminal is clamped at the position of the connecting port so that the contact extends out of the connecting port, the grille is arranged at the position of the window, and the window is used for conducting the inside of the loudspeaker with the outside airflow;

and the vibrating diaphragm is connected with the shell through the gasket.

The washer provided by the embodiment of the utility model comprises a plurality of constituent units and insulating layers arranged among the constituent units. By changing the internal structure of the washer, the length and the cross-sectional area of the circulated induced current on the washer are reduced. Therefore, the resistivity of the washer is increased, and the induced current generated in the washer is reduced, so that the energy loss of the loudspeaker is reduced, and the service life is prolonged.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

FIG. 1 is an exploded schematic view of a loudspeaker according to an embodiment of the utility model;

FIG. 2 is a schematic structural view of a washer according to an embodiment of the present invention in some embodiments;

FIG. 3 is a schematic structural diagram of a washer in another embodiment according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a washer in yet another embodiment according to an embodiment of the present invention;

FIG. 5 is a schematic view of the assembly of a loudspeaker according to an embodiment of the utility model;

fig. 6 is a schematic bottom view of a speaker according to an embodiment of the present invention.

Description of reference numerals:

1-magnetic bowl; 2-a magnet; 3-washer; 31-a building block; 32-an insulating layer; 4-vibrating diaphragm; 5-a voice coil; 6-terminal; 61-contact; 7-a grid; 8-a shell; 81-connecting port; 82-a window; 9-washer.

Detailed Description

The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth. It will be apparent to one skilled in the art that the present invention may be practiced without these specific details. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present invention.

Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

Unless the context clearly requires otherwise, throughout this specification, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".

In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean that, for example, they may be fixedly connected or detachably connected or integrally formed; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Spatially relative terms, such as "inner," "outer," "below," "lower," "above," "upper," and the like, are used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the example term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Fig. 1 is an exploded schematic view of a speaker according to an embodiment of the present invention, and as shown in fig. 1, the speaker according to the embodiment of the present invention includes a magnetic bowl 1, a magnet 2, and a washer 3, where the magnet 2 is disposed in the magnetic bowl 1, the washer 3 has a plurality of constituent units 31 and insulating layers 32 disposed between the constituent units 31, and the washer 3 is disposed in the magnetic bowl 1 and above the magnet 2. The magnetic bowl 1, the magnet 2 and the washer 3 form a magnetic circuit system, and a magnetic gap is formed between the washer 3 and the magnetic bowl 1.

In the working process of the loudspeaker in the embodiment, after the voice coil 5 is electrified, the voice coil is located in the magnetic gap and can move up and down under the influence of ampere force. Meanwhile, the current change in the voice coil 5 can generate a magnetic field, and according to the lenz law, the washer 3 influenced by the voice coil 5 can generate an induction magnetic field. Fig. 2 is a schematic structural diagram of the washer 3 in some embodiments, and an induced magnetic field generated by the washer 3 is shown at B in fig. 2, and the direction of the induced magnetic field penetrates through the washer from bottom to top or from top to bottom. The induced magnetic field further causes an induced electromotive force to be generated in the washer 3, and the direction of the induced electromotive force (current) is shown at E in fig. 2, and the induced electromotive force is located on a plane substantially perpendicular to the direction of the magnetic field and makes a circular motion on the plane. The induced current is converted into heat inside the washer 3 and dissipated. Thus, the washer 3 of the speaker in the present embodiment is configured to have a plurality of constituent units 31 and an insulating layer 32 disposed between the constituent units. By changing the internal structure of the washer 3, the length and cross-sectional area of the induction current flowing on the washer 3 are reduced. Therefore, the resistivity of the washer 3 is increased, and the induced current generated in the washer 3 is reduced, so that the energy loss of the loudspeaker is reduced, and the service life is prolonged.

As shown in fig. 1-2, in some embodiments, the composition unit 31 is a plurality of circular sheet metal pieces stacked in the thickness direction of the magnetic bowl 1. In the embodiment, the size of the washer 3 in the height direction can be reduced, and the resistivity of the washer 3 is increased.

Fig. 3 is a schematic structural diagram of washer in another embodiment, as shown in fig. 1 and 3, in this embodiment, the composition unit 31 includes one circular metal sheet and at least one annular metal sheet nested in a radial direction of the magnetic bowl 1. The present embodiment can reduce the size of the washer 3 in the width direction (diameter direction of the circle), and further can increase the resistivity of the washer 3.

Fig. 4 is a schematic structural diagram of washer in another embodiment, as shown in fig. 1 and 4, in this embodiment, the composition unit 31 is a plurality of fan-shaped metal sheets arranged along the circumferential direction of the magnetic bowl 1. The constituent unit 31 in fig. 3 is divided into 5 lobes in the circumferential direction, with an insulating layer 32 provided between each lobe. The present embodiment reduces the length of the washer 3 in the current flowing direction, thereby increasing the resistivity of the washer 3.

Alternatively, the skilled person can combine the three forms of washer 3 in fig. 2-4 as required to achieve better resistivity increasing effect. It is easy to understand that the washer 3 in the present embodiment can be applied to various types of dynamic speakers other than the moving-coil speaker.

In some embodiments, the shape of the unit 31 in the direction of the line connecting the washer 3 and the magnetic bowl 1 is at least one of a circle, a ring or a sector. The current flowing inside the washer 3 in the present embodiment is affected by the shape of the component unit 31, and the current flowing inside the washer 3 changes the flowing path, including but not limited to, the length, the cross-sectional area, and the like. The resistivity of the washer 3 is changed by changing the current circulation path in the washer 3.

As shown in fig. 1, the constituent units 31 are preferably circular disks and are 2, 3 or 4 in number. On the premise of considering the weight and the internal space of the whole loudspeaker, the washer 3 is shaped into a circular piece, and the number of the washers is 2, 3 or 4, so that the resistivity of the washer is increased, and meanwhile, enough washer installation space can be reserved in the loudspeaker.

Further, the composition unit 31 is at least one of a silicon steel member, a nickel-iron alloy member, and a permalloy member. The washer 3 is used for magnetic conduction in the loudspeaker, and a magnetic gap is formed between the washer 3 and the magnetic bowl 1. After the washer 3 is divided into the plurality of constituent units 31 by the insulating layer 32, the magnetic permeability of the washer 3 is reduced, and in order to compensate for this, the constituent units 31 are made of materials with better magnetic permeability, such as silicon steel, nickel-iron alloy, permalloy, and the like. The materials in this embodiment can be selected by those skilled in the art according to the actual requirements of the speaker.

Optionally, the insulating layer 32 is at least one of insulating varnish and insulating glue. The thickness of the insulating layer can be changed according to actual requirements, for example, when the resistivity of the washer 3 needs to be further improved or the magnetic permeability of the washer 3 needs to be reduced, the thickness of the insulating layer 32 can be increased.

As shown in fig. 1, in some embodiments, the speaker further includes a diaphragm 4, a voice coil 5, and a terminal 6, the voice coil 5 is connected to the diaphragm 4 and disposed in the magnetic gap, and the terminal 6 is electrically connected to the voice coil 5 and has a contact 61. Terminal 6 is used for the power to the feed of voice coil loudspeaker voice coil 5, and 5 circular telegrams of voice coil loudspeaker voice coil are back under the effect of ampere force, do the application of cutting magnetic induction line in the magnetic gap, and then drive the sound production of 4 movements of vibrating diaphragm.

Fig. 5 is an assembly diagram of a speaker, fig. 6 is a bottom diagram of the speaker, as shown in fig. 1 and fig. 5-6, in some embodiments, the speaker further includes a grille 7, a housing 8, and a gasket 9, the housing 8 has a connection port 81 and a window 82, the terminal 6 is clamped at the connection port 81 so that the contact 61 protrudes from the connection port 81, the grille 7 is disposed at the window 82, the window 82 is used for conducting air flow inside the speaker to the outside, and the diaphragm 4 is connected to the housing 8 through the gasket 9. When the vibrating diaphragm 4 of speaker vibrates, the inside atmospheric pressure of speaker can change, and the inside of speaker of this embodiment switches on with the outside through window 82 for at the in-process of vibrating diaphragm 4 vibration, gaseous and outside gas constantly from window 82 business turn over in the speaker, make the inside atmospheric pressure of speaker remain stable, thereby avoid influencing the vibration of vibrating diaphragm 4 because of inside atmospheric pressure changes. Meanwhile, the grille 7 disposed at the position of the window 82 can prevent foreign matters from entering the inside of the speaker while ensuring the airflow. The connection port 81 can expose the contact 61 on the terminal 6 to the outside of the speaker, facilitating electrical connection of the speaker to a device outside thereof.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A loudspeaker, comprising:

a magnetic bowl (1);

a magnet (2) disposed in the magnetic bowl (1);

the washer (3) is provided with a plurality of component units (31) and insulating layers (32) arranged among the component units (31), and the washer (3) is arranged in the magnetic bowl (1) and above the magnet (2);

wherein the magnetic bowl (1), the magnet (2) and the washer (3) form a magnetic circuit system, and a magnetic gap is formed between the washer (3) and the magnetic bowl (1).

2. A loudspeaker according to claim 1, wherein the plurality of constituent units (31) are stacked in layers and/or in a multi-lobed fashion within the magnetic bowl (1).

3. A loudspeaker according to claim 2, wherein the component element (31) is a plurality of circular sheet metal pieces stacked in the thickness direction of the magnetic bowl (1).

4. A loudspeaker according to claim 2, wherein the component element (31) is a plurality of fan-shaped metal sheets arranged circumferentially along the magnetic bowl (1).

5. A loudspeaker according to claim 2, wherein the unit (31) comprises a circular metal sheet and at least one annular metal sheet nested radially along the magnetic bowl (1).

6. A loudspeaker according to claim 3, characterized in that the number of said constituent units (31) is 2, 3 or 4.

7. Loudspeaker according to claim 1, characterised in that the component element (31) is a silicon steel part.

8. The loudspeaker of claim 1, wherein the insulating layer (32) is one of an insulating varnish or an insulating glue.

9. The speaker of claim 1, further comprising:

a diaphragm (4);

the voice coil (5) is connected with the vibrating diaphragm (4) and is arranged in the magnetic gap;

and a terminal (6) electrically connected to the voice coil (5) and having a contact (61).

10. The speaker of claim 9, further comprising:

a grid (7);

a housing (8) having a connection port (81) and a window (82), wherein the terminal (6) is clamped at the position of the connection port (81) so that the contact (61) extends out of the connection port (81), the grille (7) is arranged at the position of the window (82), and the window (82) is used for conducting the air flow inside the loudspeaker with the outside;

a washer (9), through which washer (9) the diaphragm (4) is connected to the housing (8).

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