CN215010698U

CN215010698U - Horn type loudspeaker

Info

Publication number: CN215010698U
Application number: CN202121264656.6U
Authority: CN
Inventors: 贾燕民
Original assignee: Suzhou Mansheng Acoustic Technology Co ltd
Current assignee: Suzhou Mansheng Acoustic Technology Co ltd
Priority date: 2021-05-20
Filing date: 2021-06-07
Publication date: 2021-12-03
Anticipated expiration: 2031-06-07

Abstract

The utility model provides a loudspeaker, including the casing and establish the magnetic circuit in the casing, first vibration system and second vibration system, magnetic circuit includes interior magnet and outer magnet, outer magnet and interior magnet encircle the setting, the radial periphery of magnet including the outer magnet encircles, form annular gap between outer magnet and the interior magnet, first vibration system includes first voice coil loudspeaker voice coil and first vibrating diaphragm, second vibration system includes second voice coil loudspeaker voice coil and second vibrating diaphragm, one side at magnetic circuit is established to first voice coil loudspeaker voice coil and first vibrating diaphragm, the opposite side at magnetic circuit is established to second voice coil loudspeaker voice coil and second vibrating diaphragm, first voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil correspond the annular gap setting. Due to the special structural design of the first magnet and the second magnet, the first voice coil and the second voice coil can share the magnetic fields of the inner magnet and the outer magnet, the structure of a magnetic circuit system is miniaturized, the loudspeaker becomes thinner, the size is smaller, and the occupied space is smaller.

Description

Horn type loudspeaker

Cross Reference to Related Applications

The present application claims priority from chinese patent application filed on 20/05/2021 under the name of "horn" at the chinese patent office under the application number 202121092333.3, the entire contents of which are incorporated herein by reference.

Technical Field

The utility model belongs to the technical field of the audio frequency technique and specifically relates to a loudspeaker.

Background

At present, audio equipment tends to be smaller and smaller, is more and more portable, and the inner space of the audio equipment is smaller and smaller.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the present invention is to provide an improved speaker for the above-mentioned defects in the related art.

The utility model provides a technical scheme that its technical problem adopted includes: the loudspeaker comprises a shell, a magnetic circuit system, a first vibration system and a second vibration system, wherein the magnetic circuit system, the first vibration system and the second vibration system are arranged in the shell, the magnetic circuit system comprises an inner magnet and an outer magnet, the outer magnet and the inner magnet are arranged in a surrounding mode, the outer magnet is arranged on the radial periphery of the inner magnet in a surrounding mode, an annular gap is formed between the outer magnet and the inner magnet, the first vibration system comprises a first voice coil and a first vibration film, the second vibration system comprises a second voice coil and a second vibration film, the first voice coil and the first vibration film are arranged on one side of the magnetic circuit system, the second voice coil and the second vibration film are arranged on the other side of the magnetic circuit system, the first voice coil and the second voice coil are arranged corresponding to the annular gap, so that the first voice coil generates mechanical movement under the action of magnetic fields of the outer magnet and the inner magnet to drive the first vibration film to vibrate, and the second voice coil generates mechanical motion under the action of the magnetic fields of the outer magnet and the inner magnet so as to drive the second vibrating diaphragm to vibrate.

Preferably, each of the first voice coil and the second voice coil comprises at least one layer of wires, and each layer of wires is formed by winding wires in a plane in a spiral shape.

Preferably, the first diaphragm and the second diaphragm have an outer diameter equivalent to each other.

Preferably, the magnetic circuit system includes a magnet support for supporting the inner magnet, the magnet support being provided in an annular gap between the inner magnet and the outer magnet and connecting the inner magnet and the outer magnet.

Preferably, the magnet support is annular to match the annular gap.

Preferably, an outer side of the outer magnet is connected with the housing, and an inner side of the outer magnet is connected with an outer side of the inner magnet through the magnet supporter.

Preferably, one side of the shell, which is close to the first diaphragm, is provided with a first through hole, the first diaphragm is provided with a sound through hole, and the sound through hole corresponds to the hole formed by the surrounding of the inner magnet, so that the sound generated by the second diaphragm sequentially passes through the hole formed by the surrounding of the inner magnet, the sound through hole and the first through hole and is transmitted outwards.

Preferably, the first vibration system includes an in-film support member for supporting an edge portion of the sound passage hole of the first diaphragm, the in-film support member connecting the first diaphragm and the inner magnet, the in-film support member surrounding a periphery of the sound passage hole and a periphery of a hole formed by the inner magnet being surrounded.

Preferably, the first vibration system comprises a first outer membrane support for supporting the first diaphragm, and/or the second vibration system comprises a second outer membrane support for supporting the second diaphragm, wherein the first outer membrane support is connected to an outer edge of the first diaphragm, and the second outer membrane support is connected to an outer edge of the second diaphragm.

Preferably, a second through hole is formed in one side, close to the second diaphragm, of the shell.

Implement the technical scheme of the utility model, following beneficial effect has at least: due to the special structural design of the first magnet and the second magnet, the first voice coil and the second voice coil can share the magnetic fields of the inner magnet and the outer magnet, the structure of a magnetic circuit system is miniaturized, the loudspeaker becomes thinner, the size is smaller, and the occupied space is smaller.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced 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 without inventive labor.

Fig. 1 is an orthographic view of a horn of some embodiments of the present invention.

Fig. 2 is a sectional view of the horn of the first embodiment of the present invention at a-a position in fig. 1.

Fig. 3 is a sectional view of a horn according to a second embodiment of the present invention at a position a-a in fig. 1.

Fig. 4 is a sectional view of a horn according to a third embodiment of the present invention at a position a-a in fig. 1.

Fig. 5 is a sectional view of a horn according to a fourth embodiment of the present invention at a position a-a in fig. 1.

Fig. 6 is a partially enlarged view of a portion Q in fig. 5.

The reference numerals in the figures denote: the vibration-damping device comprises a magnetic circuit system 1, an outer magnet 11, an inner magnet 12, a magnet support 13, a first vibration system 2, a first voice coil 21, a first diaphragm 22, an inner diaphragm support 23, a first outer diaphragm support 24, a sound through hole 22a, a second vibration system 3, a second voice coil 31, a second diaphragm 32, a second outer diaphragm support 33, a shell 4, a first through hole 4a, a second through hole 4b, a mesh 5, a third through hole 5a, a first middle part 221, a first fold 222, a dome 25 and a washer 26.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that if the terms "front", "back", "upper", "lower", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are used herein to indicate an orientation or positional relationship, they are constructed and operated in a particular orientation based on the orientation or positional relationship shown in the drawings, but are only for convenience of describing the present invention, and do not indicate that the device or component being referred to must have a particular orientation, and therefore, should not be construed as limiting the present invention. It is also to be understood that, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," "disposed," and the like, if used herein, are intended to be inclusive, e.g., that they may be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. If the terms "first", "second", "third", etc. are used herein only for convenience in describing the present technical solution, they are not to be taken as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

Referring to fig. 1-2, a loudspeaker in an embodiment of the present invention includes a housing 4, and a magnetic circuit 1, a first vibration system 2, and a second vibration system 3 disposed in the housing 4, where the magnetic circuit 1 includes an inner magnet 12 and an outer magnet 11, the outer magnet 11 and the inner magnet 12 are disposed in a surrounding manner, the outer magnet 11 surrounds a radial periphery of the inner magnet 12, an annular gap is formed between the outer magnet 11 and the inner magnet 12, the first vibration system 2 includes a first voice coil 21 and a first diaphragm 22, the second vibration system 3 includes a second voice coil 31 and a second diaphragm 32, the first voice coil 21 is connected to the first diaphragm 22, the second voice coil 31 is connected to the second diaphragm 32, the first voice coil 21 and the first diaphragm 22 are disposed on one axial side of the magnetic circuit 1, the second diaphragm 31 and the second diaphragm 32 are disposed on the other axial side of the magnetic circuit 1, the outer magnet 11 and the inner magnet 12 are disposed between the first diaphragm 22 and the second diaphragm 32, the first voice coil 21 and the second voice coil 31 are disposed corresponding to the annular gap between the outer magnet 11 and the inner magnet 12, so that the first voice coil 21 generates a mechanical motion under the magnetic field effect of the outer magnet 11 and the inner magnet 12 to drive the first diaphragm 22 to vibrate and pronounce, and the second voice coil 31 generates a mechanical motion under the magnetic field effect of the outer magnet 11 and the inner magnet 12 to drive the second diaphragm 32 to vibrate and pronounce, in other words, the first voice coil 21 and the second voice coil 31 share the magnetic field of the inner magnet 12 and the outer magnet 11.

Due to the special structural design of the first magnet and the second magnet, the first voice coil 21 and the second voice coil 31 can share the magnetic fields of the inner magnet 12 and the outer magnet 11, the structure of the magnetic circuit system 1 is miniaturized, and the loudspeaker becomes thinner, smaller in size and smaller in occupied space.

The first voice coil 21 and the second voice coil 31 are both planar voice coils, and each voice coil includes at least one layer of wires, and each layer of wires is formed by winding a wire spirally in a plane. The first voice coil 21 and the second diaphragm 32 are respectively a high pitch voice coil and a high pitch diaphragm, and the second voice coil 31 and the second diaphragm 32 are respectively a low pitch voice coil and a low pitch diaphragm; or the first voice coil 21 and the second diaphragm 32 are respectively a bass voice coil and a bass diaphragm, and the second voice coil 31 and the second diaphragm 32 are respectively a treble voice coil and a treble diaphragm.

One of the first voice coil 21 and the second voice coil 31 is a flat type and comprises at least one layer of conducting wire, and each layer of conducting wire is formed by spirally winding conducting wires in a plane; the other is of the moving coil type, which is formed by a wire spirally wound around an axis.

The first diaphragm 22 may be a flat type, and includes a first middle portion 221 and a first collar 222 surrounding the periphery of the middle portion, the middle portion is flat, the first middle portion 221 is provided with a dome 25, the first voice coil 21 is a single-sided or double-sided voice coil printed or etched on the dome 25, the single-sided voice coil refers to that the voice coil is only arranged on one side of the diaphragm, and the double-sided voice coil refers to that the voice coil is arranged on both sides of the diaphragm; the first collar 222 is flat or arched.

Referring to the embodiment of fig. 2 and 3, the first voice coil 21 and the second voice coil 31 are both planar, the first voice coil 21 being a treble voice coil, and the second voice coil 31 being a bass voice coil. The first voice coil 21 may include at least one wire layer, and each of the wire layers is wound in a plane in a wire spiral type (fig. 2), and the first voice coil 21 may also be a single-sided or double-sided voice coil printed or etched on the dome 25 of the first diaphragm (fig. 3); the intermediate portion of the first diaphragm is planar, the rim is planar (fig. 3) or domed (fig. 2), and the intermediate portion and rim of the second diaphragm are domed.

Referring to the embodiment of fig. 4 and 5-6, the first voice coil 21 is a planar treble voice coil and the second voice coil 31 is a moving coil type bass voice coil and extends into the gap between the inner and outer magnets. The first voice coil 21 may include at least one wire layer, and each wire layer is formed by winding a wire in a plane in a spiral manner (fig. 4), the first voice coil 21 may also be a single-sided or double-sided voice coil (fig. 5-6) printed or etched on a ball top 25 on the first diaphragm, and a washer 26 is disposed on one side of the inner magnet and the outer magnet facing the second diaphragm; the middle portion of the first diaphragm is planar, the edge is planar (fig. 5) or domed (fig. 4), and the middle portion of the second diaphragm and the edge are domed.

The voice coil formed by printing or etching on the dome 25 may be a single layer or a double-sided multilayer. The advantage is that the voice coil is lighter and the high frequency is better.

The outer diameters of the first diaphragm 22 and the second diaphragm 32 are comparable, and preferably equal. The outer diameters of the two diaphragms of the conventional loudspeaker are one large and one small, and compared with the prior loudspeaker, the outer diameters of the first diaphragm 22 and the second diaphragm 32 of the loudspeaker are equivalent, so that the area of the first diaphragm is larger than that of the second diaphragm 32, and the sensitivity is higher.

The magnetic circuit system 1 includes a magnet support 13 for supporting the inner magnet 12, the magnet support 13 being disposed in an annular gap between the inner magnet 12 and the outer magnet 11 and connecting the inner magnet 12 and the outer magnet 11.

The magnet support 13 is annular to match the annular gap between the outer magnet 11 and the inner magnet 12.

The outer magnet 11 is connected on the outside to the housing 4, and the inner magnet 11 is connected on the inside to the outer magnet 12 by a magnet support 13. The thickness, i.e. the axial dimension, of the inner magnet 12 and the outer magnet 11 is comparable, preferably equal. The inner magnet 12 and/or the outer magnet 11 are annular, preferably both annular.

One side of the shell 4 close to the first diaphragm 22 is provided with a first through hole 4a, the first diaphragm 22 is provided with a sound through hole 22a, and the first through hole 4a and the sound through hole 22a correspond to a hole formed by the inner magnet 12 in a surrounding manner, so that sound generated by the second diaphragm 32 sequentially passes through the hole formed by the inner magnet 12 in the surrounding manner, the sound through hole 22a and the first through hole 4a and is transmitted outwards.

The first vibration system 2 includes an in-film support member 23 for supporting an edge portion of the sound passage hole 22a of the first diaphragm 22, the in-film support member 23 connecting the first diaphragm 22 and the inner magnet 12, the in-film support member 23 being annular and surrounding a periphery of the sound passage hole 22a and a periphery of a hole formed around the inner magnet 12.

The first vibration system 2 comprises a first outer membrane support 24 for supporting the first diaphragm 22 and/or the second vibration system 3 comprises a second outer membrane support 33 for supporting the second diaphragm 32, wherein the first outer membrane support 24 is ring-shaped and connects an outer edge of the first diaphragm 22 and the housing 4, and the second outer membrane support 33 is ring-shaped and connects an outer edge of the second diaphragm 32 and the housing 4.

The side of the housing 4 close to the second diaphragm 32 is provided with a second through hole 4b, the second through hole 4b is used for adjusting the sound curve of the loudspeaker, and the position of the second through hole 4b preferably corresponds to the hole formed by the inner magnet 12. One side of the shell 4 close to the second diaphragm 32 is provided with a mesh 5, the mesh 5 is provided with a third through hole 5a, the third through hole 5a corresponds to and communicates with the second through hole 4b, and the mesh 5 is used for adjusting the sound curve of the loudspeaker.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, which may be modified, combined, and varied 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 scope of the claims of the present invention.

Claims

1. A loudspeaker, characterized by comprising a housing (4), and a magnetic circuit system (1), a first vibration system (2) and a second vibration system (3) which are arranged in the housing (4), wherein the magnetic circuit system (1) comprises an inner magnet (12) and an outer magnet (11), the outer magnet (11) and the inner magnet (12) are arranged in a surrounding manner, the outer magnet (11) is arranged in a surrounding manner at the radial periphery of the inner magnet (12), an annular gap is formed between the outer magnet (11) and the inner magnet (12), the first vibration system (2) comprises a first voice coil (21) and a first diaphragm (22), the second vibration system (3) comprises a second voice coil (31) and a second diaphragm (32), the first voice coil (21) and the first diaphragm (22) are arranged at one side of the magnetic circuit system (1), and the second voice coil (31) and the second diaphragm (32) are arranged at the other side of the magnetic circuit system (1), the first voice coil (21) and the second voice coil (31) are arranged corresponding to the annular gap, so that the first voice coil (21) generates mechanical motion under the action of magnetic fields of the outer magnet (11) and the inner magnet (12) to drive the first vibrating diaphragm (22) to vibrate, and the second voice coil (31) generates mechanical motion under the action of magnetic fields of the outer magnet (11) and the inner magnet (12) to drive the second vibrating diaphragm (32) to vibrate.

2. The loudspeaker of claim 1, wherein said first voice coil (21) and said second voice coil (31) each comprise at least one layer of wire, each of said layers of wire being wound in a plane in a helical pattern of wire.

3. The loudspeaker of claim 1, wherein one of the first voice coil (21) and the second voice coil (31) comprises at least one layer of wire, each of the layers of wire being wound in a plane in a wire spiral pattern; the other is formed by spirally winding a wire around an axis.

4. The loudspeaker according to claim 1, wherein the first diaphragm (22) comprises a first middle portion (221) and a first corrugated rim (222) surrounding the periphery of the middle portion, the middle portion is flat, a dome (25) is arranged on the first middle portion (221), and the first voice coil (21) is a single-sided or double-sided voice coil on the dome (25); the first fold (222) is flat or arched.

5. A loudspeaker as claimed in claim 1, wherein the first diaphragm (22) and the second diaphragm (32) have an outer diameter which is comparable.

6. A loudspeaker according to claim 1, wherein the magnetic circuit system (1) comprises a magnet support (13) for supporting the inner magnet (12), the magnet support (13) being provided in an annular gap between the inner magnet (12) and the outer magnet (11) and connecting the inner magnet (12) and the outer magnet (11).

7. The horn of claim 6, wherein the magnet support (13) is annular to match the annular gap.

8. The horn according to claim 6, characterized in that the outer magnet (11) is connected on the outside to the housing (4) and the inner magnet (11) is connected on the inside to the outer magnet (12) by the magnet support (13).

9. A loudspeaker according to claim 1, wherein a side of the housing (4) adjacent to the first diaphragm (22) is provided with a first through hole (4a), the first diaphragm (22) is provided with a sound passing hole (22a), and the sound passing hole (22a) corresponds to the hole formed by the inner magnet (12) in a surrounding manner, so that the sound generated by the second diaphragm (32) is transmitted to the outside through the hole formed by the inner magnet (12) in a surrounding manner, the sound passing hole (22a) and the first through hole (4a) in sequence.

10. The horn of claim 9, wherein the first vibration system (2) comprises an in-film support member (23) for supporting an edge portion of the sound passage hole (22a) of the first diaphragm (22), the in-film support member (23) connecting the first diaphragm (22) and the inner magnet (12), the in-film support member (23) surrounding a periphery of the sound passage hole (22a) and a periphery of a hole formed around the inner magnet (12).