CN219478130U - Electric loudspeaker - Google Patents
Electric loudspeaker Download PDFInfo
- Publication number
- CN219478130U CN219478130U CN202223533699.7U CN202223533699U CN219478130U CN 219478130 U CN219478130 U CN 219478130U CN 202223533699 U CN202223533699 U CN 202223533699U CN 219478130 U CN219478130 U CN 219478130U
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- cone
- shaped iron
- shaped
- support piece
- centering support
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Abstract
The utility model provides an electrodynamic loudspeaker which can solve the problem of large thickness of the loudspeaker in the prior art. The electric loudspeaker comprises a cone, a basin frame, U-shaped iron, a voice coil and a centering support piece, wherein the centering support piece is positioned at the periphery of the opening end of the U-shaped iron, and the centering support piece is connected to the rear side part of the U-shaped iron and the cone. According to the electric loudspeaker, the centering support piece is separated from the voice coil, and is connected with the voice coil into a whole, but is connected with the cone and the U-shaped iron, so that when the voice coil is electrified and vibrated, the centering support piece is not directly driven to vibrate, a vibration space is not required to be reserved between the centering support piece and the U-shaped iron, the space between the centering support piece and the U-shaped iron is effectively released, and the thin design of the loudspeaker is facilitated.
Description
Technical Field
The utility model relates to electroacoustic devices, in particular to structural improvement of an electrodynamic loudspeaker.
Background
The loudspeaker is commonly called as a loudspeaker, and simply is an electroacoustic device capable of converting an electric signal into sound, and is an important device in a sound system. As one of electroacoustic transducer devices for converting electric energy into acoustic energy, the quality and characteristics of a speaker play a decisive role in the sound quality of the entire sound system.
Because of the different materials, techniques and working principles, speakers can be classified into many kinds, such as electrodynamic speakers, magnetic speakers, ion speakers, electrostatic speakers, etc. Among them, an electrodynamic loudspeaker is generally composed of the following three parts:
(1) the vibration system comprises a cone-shaped cone, a voice coil, a centering support piece and the like;
(2) a central magnetic circuit comprising a permanent magnet, a magnetic conduction plate, a field column and the like;
(3) the auxiliary system comprises a basin frame, a wiring board, a pressing edge, a dust cover and the like.
When audio current flows through the voice coil in the magnetic field, a magnetic field changing along with the audio current is generated, and the magnetic field interacts with the magnetic field of the permanent magnet, so that the voice coil vibrates along the axial direction to generate sound.
However, in the electric loudspeaker in the prior art, parts are more, the centering support piece is sleeved on the voice coil and is directly adhered to the voice coil, the voice coil vibrates to drive the centering support piece to vibrate together, and in order to prevent the centering support piece from vibrating to touch other parts, spaces are reserved between the centering support piece and the front side cone and between the centering support piece and the rear side U iron, so that the thickness of the whole loudspeaker is larger, and the weight is larger.
With the continuous pursuit of structure lightening and thinning of consumer/vehicle products, performance maximization, recently, customers complain that the weight and thickness of a loudspeaker are too heavy, and especially the thickness of a vehicle door is limited by taking up too much space when the loudspeaker is mounted on the vehicle door, and the built-in part loudspeaker must adapt to the development trend of the industry, so that lightening and thinning are promoted.
Disclosure of Invention
The utility model provides an electrodynamic loudspeaker which can solve the problem of large thickness of the loudspeaker in the prior art.
In order to achieve the purpose of solving the technical problems, the utility model is realized by adopting the following technical scheme: an electrodynamic loudspeaker comprising:
a sound basin;
the outer edge of the basin frame is connected with the outer edge of the cone, and the basin frame and the cone enclose a mounting cavity;
the magnetic circuit system comprises U-shaped iron and a central magnetic circuit arranged in the U-shaped iron, the U-shaped iron is connected to the inner edge of the basin frame, and the opening end of the U-shaped iron extends into the mounting cavity through the inner edge of the basin frame;
the voice coil is positioned in the mounting cavity, the front end of the voice coil is connected with the voice cone, and the rear end of the voice coil stretches into the inner side of the U-shaped iron and is positioned at the periphery of the central magnetic circuit;
the centering support piece is positioned in the mounting cavity and positioned at the periphery of the opening end of the U-shaped iron, and the centering support piece is connected to the U-shaped iron and the rear side part of the cone.
The cone comprises a folding ring and a cone, the opening of the cone faces the side where the U-shaped iron is located, the bottom plate of the cone is connected with the inner edge of the folding ring, the outer edge of the cone frame is connected with the outer edge of the folding ring, the outer edge of the centering support piece is connected with the outer edge of the cone, and the inner edge of the centering support piece is connected with the U-shaped iron.
The folding ring is provided with an annular concave part which is concave towards the inside of the installation cavity, and the annular concave part is positioned at the periphery of the cone.
The ring is provided with a first annular flat plate part positioned at the radial inner side of the annular concave part, the first annular flat plate part forms the inner edge of the ring, a second annular flat plate part is formed on the bottom plate of the cone, and the second annular flat plate part is fixedly attached to the first annular flat plate part.
The bottom plate of the cone is provided with a reinforcing part, the reinforcing part is positioned on the radial inner side of the second annular flat plate part, and a reinforcing structure is formed on the reinforcing part.
The inner edge of the centering support piece is provided with a cylindrical part extending to the side where the cone is located, and the cylindrical part is fixedly attached to the outer peripheral surface of the opening end of the U-shaped iron.
The cone-shaped basin comprises a basin frame, wherein a cone-shaped concave part is formed on the basin frame and used for sinking towards the side where the cone is located, a through part is formed on the bottom plate of the cone-shaped concave part, the opening end of U-shaped iron extends into the installation cavity, and the U-shaped iron is located in the cone-shaped concave part.
An annular convex part is formed on the outer peripheral surface of the opening end of the U-shaped iron, and the annular convex part is fixedly attached to the bottom plate of the conical concave part.
The bottom plate of the conical concave part is attached to the centering support piece.
The U-shaped protruding portion protruding towards the side where the cone is located is formed on the bottom plate of the U-shaped iron, the opening direction of the U-shaped protruding portion is opposite to that of the U-shaped iron, and the central magnetic circuit is arranged on the U-shaped protruding portion.
Compared with the prior art, the electric loudspeaker has the advantages that the centering support sheet is separated from the voice coil, the centering support sheet is not connected with the voice coil into a whole, but is connected to the rear side part of the cone and the U iron, when the voice coil is electrified and vibrated, the centering support sheet is not directly driven to vibrate, a vibration space is not required to be reserved between the centering support sheet and the U iron, the space between the centering support sheet and the U iron is effectively released, and the thin design of the loudspeaker is facilitated.
Drawings
FIG. 1 is a perspective view of an electro-dynamic loudspeaker according to an embodiment of the utility model;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a front view of FIG. 1;
FIG. 4 is a view in the direction A of FIG. 3;
FIG. 5 is a B-B cross-sectional view of FIG. 4;
fig. 6 is an enlarged view of a portion C of fig. 5.
Reference numerals: 100-cone; 110-folding ring; 111-annular recess; 112-a first annular flat plate portion; 120-cone; 121-a second annular flat plate portion; 122-reinforcement; 123-reinforcing ribs; 200-basin stand; 210-a conical depression; 220-a through part; 300-U iron; 310-open end; 320-annular protrusion; 330-U-shaped projections; 400-voice coil; 500-centering support pieces; 510-a cylindrical portion; 600-connecting terminals; 700-magnet; 800-washer; 900-mounting cavity.
Detailed Description
The technical scheme of the utility model is further described in detail below with reference to the attached drawings and the detailed description.
First, the terms "front" and "rear" in the azimuth related to this embodiment will be described, and the side on which the cone is located and the side on which the U-iron is located will be referred to as "front" and "rear" in the sound emission direction of the electro-dynamic speaker.
Referring to fig. 1 to 6, the present embodiment is an electrodynamic loudspeaker including a cone 100, a cone frame 200, a magnetic circuit system, a voice coil 400, and a centering support 500.
The outer edge of the basin stand 200 is connected with the outer edge of the cone 100, and the basin stand 200 and the cone 100 enclose a mounting cavity 900.
The magnetic circuit system comprises a U-shaped iron 300 and a central magnetic circuit arranged in the U-shaped iron 300, wherein the central magnetic circuit is a magnet 700 and a washer 800; the U-shaped iron 300 is connected to the inner edge of the tub 200, and the open end 310 of the U-shaped iron 300 extends into the mounting cavity 900 through the inner edge of the tub 200.
The voice coil 400 is located in the installation cavity 900, the front end of the voice coil 400 is connected to the cone 100, the rear end of the voice coil 400 extends into the U-shaped iron 300 and is located at the periphery of the central magnetic circuit, radial gaps exist between the voice coil 400 and the U-shaped iron 300 and between the voice coil 400 and the central magnetic circuit, so that the voice coil 400 cannot touch the central magnetic circuit when vibrating, and the voice coil 400 is electrically connected with the wiring terminal 600 arranged on the cone frame 200.
The centering pad 500 is located in the mounting cavity 900 and is located at the periphery of the open end 310 of the U-shaped iron 300, and the centering pad 500 is connected to the U-shaped iron 300 and the rear side of the cone 100.
When the electrodynamic loudspeaker of the embodiment works, external electric signals enter the voice coil 400 through the connecting terminal 600, the voice coil 400 in the magnetic field generates a magnetic field which changes along with current, and the magnetic field interacts with the magnetic field of the central magnetic circuit, so that the voice coil 400 vibrates along the axial direction to make a sound.
In the electrodynamic loudspeaker of this embodiment, the centering support 500 is assembled separately from the voice coil 400, i.e. the centering support 500 is not connected to the voice coil 400, but is connected to the rear side of the cone 100 and the U-iron 300, and the U-iron 300 is a stationary member. When the voice coil 400 is electrified and vibrated, the centering support piece 500 is not directly driven to vibrate, so that a vibration space is not required to be reserved between the centering support piece 500 and the U iron 300, the space between the centering support piece 500 and the U iron 300 is effectively released, and the thin design of the loudspeaker is facilitated. Meanwhile, the voice coil 400 is not connected with the centering support piece 500 any more, is not limited by the centering support piece 500, and can maximize the diameter of the voice coil 400 as much as possible on the premise of meeting the radial clearance (magnetic clearance) between the voice coil 400 and the U-iron 300 and between the voice coil 400 and the center magnetic circuit, thereby providing the maximum driving force and improving the sound pressure level of the loudspeaker.
Further, the cone 100 includes a folded ring 110 and a cone 120, as shown in fig. 2 and 5, the cone is located at the rear side of the folded ring 110, and the cone 120 is opened toward the side of the U-shaped iron 300, so that the cone 120 occupies the space in the installation cavity 900 as much as possible, without occupying additional space. The bottom plate of the cone 120 is connected to the inner edge of the folding ring 110, the outer edge of the basin frame 200 is specifically connected to the outer edge of the folding ring 110, and specifically, the connection between the cone 120 and the folding ring 110 and the connection between the basin frame 200 and the folding ring 110 can be realized by coating glue and hot pressing. The outer edge of the centering strip 500 is connected to the outer edge of the cone 120, and the centering strip 500 is connected to the U-iron 300 with its inner edge, in particular also by means of gluing.
Specifically, the centering plate 500 is ring-shaped, has a central through hole, is sleeved on the open end 310 of the U-shaped iron 300, and is bonded to the U-shaped iron 300, while its outer edge is bonded to the outer edge of the cone 120. The connecting structure of the centering support 500 is simpler in structure, does not need additional auxiliary parts, has fewer parts, and is further beneficial to product thinning and light weight.
The material of the ring 110 is usually a rubber member, so as to enhance the structural strength thereof, thereby enhancing the supporting strength thereof on the cone 120 and the voice coil 400, as shown in fig. 5, in this embodiment, the ring 110 has an annular recess 111, and the annular recess 111 is recessed into the mounting cavity 900, and the annular recess 111 is located at the periphery of the cone 120, so as to fully utilize the space in the mounting cavity 900, and not to additionally increase the axial thickness dimension of the speaker, thereby further facilitating the product thinning design.
The folded ring 110 further has a first annular flat plate portion 112 located at the radial inner side of the annular recess portion 111, the first annular flat plate portion 112 forms an inner edge of the folded ring 110, a second annular flat plate portion 121 is formed on a bottom plate of the cone 120, and the second annular flat plate portion 121 is fixedly attached to the first annular flat plate portion 112. That is, the joint of the folded ring 110 and the cone 120 is a flat plate, which further reduces the space requirement in front of the speaker during operation, and brings wider installation adaptability.
The entire base plate of the cone 120 is substantially flat plate-shaped, and has a reinforcing portion 122 for improving its structural strength, the reinforcing portion 122 being located radially inward of the second annular flat plate portion 121 thereof, and a reinforcing structure being formed on the reinforcing portion 122. The reinforcing structure is specifically a concave reinforcing rib 123, which is arranged in a radial shape.
As shown in fig. 5 and 6, for the specific connection structure between the centering support 500 and the U-shaped iron 300, a cylindrical portion 510 extending toward the side of the cone 100 is formed at the inner edge of the centering support 500, and the cylindrical portion 510 is attached and fixedly connected to the outer peripheral surface of the opening end 310 of the U-shaped iron 300, so that the contact area between the centering support 500 and the U-shaped iron 300 can be increased, and the bonding firmness of the centering support 500 and the U-shaped iron 300 can be improved.
In order to further reduce the thickness of the product, a conical concave portion 210 recessed towards the side where the cone 100 is located is formed on the cone frame 200, a through portion 220 is formed on the bottom plate of the conical concave portion 210, the periphery of the through portion 220 forms the inner edge of the cone frame 200, the opening end 310 of the U-shaped iron 300 extends into the mounting cavity 900 through the through portion 220, the U-shaped iron 300 is located in the conical concave portion 210, occupation of the U-shaped iron 300 to the space can be reduced as much as possible, and the axial thickness dimension of the product is compressed, so that the product can be further thinned.
An annular convex part 320 is formed on the outer peripheral surface of the opening end 310 of the U-shaped iron 300, and the annular convex part 320 is fixedly attached to the bottom plate of the conical concave part 210, so that the U-shaped iron 300 is fixedly connected with the inner edge of the basin frame 200.
Further, the bottom plate of the conical recess 210 is attached to the centering pad 500, so as to provide a supporting force for the centering pad 500, and improve the structural stability of the centering pad 500.
The bottom plate of the U-shaped iron 300 is formed with a U-shaped protrusion 330 protruding toward the side of the cone 100, the opening direction of the U-shaped protrusion 330 is opposite to that of the U-shaped iron 300, and the central magnetic circuit is disposed on the U-shaped protrusion 330, so that the central magnetic circuit is as close to the voice coil 400 as possible, and the axial thickness dimension of the product is also reduced. Specifically, the central magnetic circuit is also fixed to the U-shaped protrusion 330 by glue bonding.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. An electrodynamic loudspeaker, comprising:
a sound basin;
the outer edge of the basin frame is connected with the outer edge of the cone, and the basin frame and the cone enclose a mounting cavity;
the magnetic circuit system comprises U-shaped iron and a central magnetic circuit arranged in the U-shaped iron, the U-shaped iron is connected to the inner edge of the basin frame, and the opening end of the U-shaped iron extends into the mounting cavity through the inner edge of the basin frame;
the voice coil is positioned in the mounting cavity, the front end of the voice coil is connected with the voice cone, and the rear end of the voice coil stretches into the inner side of the U-shaped iron and is positioned at the periphery of the central magnetic circuit;
the centering support piece is positioned in the mounting cavity and positioned at the periphery of the opening end of the U-shaped iron, and the centering support piece is connected to the U-shaped iron and the rear side part of the cone.
2. The electro-dynamic loudspeaker of claim 1, wherein,
the cone comprises a folding ring and a cone, the opening of the cone faces the side where the U-shaped iron is located, the bottom plate of the cone is connected with the inner edge of the folding ring, the outer edge of the cone frame is connected with the outer edge of the folding ring, the outer edge of the centering support piece is connected with the outer edge of the cone, and the inner edge of the centering support piece is connected with the U-shaped iron.
3. The electro-dynamic loudspeaker of claim 2, wherein,
the folding ring is provided with an annular concave part which is concave towards the inside of the installation cavity, and the annular concave part is positioned at the periphery of the cone.
4. The electro-dynamic loudspeaker as claimed in claim 3,
the ring is provided with a first annular flat plate part positioned at the radial inner side of the annular concave part, the first annular flat plate part forms the inner edge of the ring, a second annular flat plate part is formed on the bottom plate of the cone, and the second annular flat plate part is fixedly attached to the first annular flat plate part.
5. The electro-dynamic loudspeaker as defined in claim 4, wherein,
the bottom plate of the cone is provided with a reinforcing part, the reinforcing part is positioned on the radial inner side of the second annular flat plate part, and a reinforcing structure is formed on the reinforcing part.
6. The electro-dynamic speaker as claimed in any one of claims 1 to 5,
the inner edge of the centering support piece is provided with a cylindrical part extending to the side where the cone is located, and the cylindrical part is fixedly attached to the outer peripheral surface of the opening end of the U-shaped iron.
7. The electro-dynamic loudspeaker as defined in claim 6, wherein,
the cone-shaped basin comprises a basin frame, wherein a cone-shaped concave part is formed on the basin frame and used for sinking towards the side where the cone is located, a through part is formed on the bottom plate of the cone-shaped concave part, the opening end of U-shaped iron extends into the installation cavity, and the U-shaped iron is located in the cone-shaped concave part.
8. The electro-dynamic speaker as defined in claim 7,
an annular convex part is formed on the outer peripheral surface of the opening end of the U-shaped iron, and the annular convex part is fixedly attached to the bottom plate of the conical concave part.
9. The electro-dynamic speaker as defined in claim 7,
the bottom plate of the conical concave part is attached to the centering support piece.
10. The electro-dynamic loudspeaker of claim 1, wherein,
the U-shaped protruding portion protruding towards the side where the cone is located is formed on the bottom plate of the U-shaped iron, the opening direction of the U-shaped protruding portion is opposite to that of the U-shaped iron, and the central magnetic circuit is arranged on the U-shaped protruding portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223533699.7U CN219478130U (en) | 2022-12-29 | 2022-12-29 | Electric loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223533699.7U CN219478130U (en) | 2022-12-29 | 2022-12-29 | Electric loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219478130U true CN219478130U (en) | 2023-08-04 |
Family
ID=87437234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223533699.7U Active CN219478130U (en) | 2022-12-29 | 2022-12-29 | Electric loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219478130U (en) |
-
2022
- 2022-12-29 CN CN202223533699.7U patent/CN219478130U/en active Active
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