T iron and loudspeaker

Abstract

The T iron comprises a base plate and a central column which are coaxially arranged, the base plate is provided with an annular protrusion which is coaxially arranged and matched with the inner wall of a magnet for limiting, and the bonding face of the base plate and the magnet is provided with a knurling structure. The utility model further discloses a loudspeaker which comprises the T iron and a copper ring, the copper ring comprises an inner ring wall and an outer ring wall which are coaxially distributed, a clamping groove matched with the central column in a clamping mode is formed between the inner ring wall and the outer ring wall, and when the copper ring is clamped to the central column, the outer ring wall is located on the outer side of the central column, and the inner ring wall is located in the groove or the through hole. The utility model provides the T iron which is conveniently and accurately matched and firmly bonded with the magnet, and the loudspeaker which is conveniently and accurately installed and matched.

Description

Technical Field

[0001] The utility model relates to a T iron and a loudspeaker, belonging to the technical field of loudspeakers. Background Art

[0002] The magnetic circuit of the speaker mainly includes a magnet and a T-iron. During assembly, the magnet needs to be concentrically bonded to the T-iron. The existing T-iron structure is difficult to accurately achieve coaxial fixed bonding with the magnet. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a T-iron and a speaker, wherein the T-iron and the magnet can be conveniently and accurately matched and firmly bonded, thereby solving the deficiencies of the prior art.

[0004] The technical solution of the utility model is: a T iron, comprising a coaxially arranged chassis and a center column, the chassis has a coaxially arranged annular protrusion which cooperates with the inner wall of the magnet to limit the position, and the bonding surface of the chassis and the magnet has a knurling structure.

[0005] Furthermore, the center of the central column has a groove or a through hole.

[0006] Furthermore, the inner wall of the groove or through hole has a knurling structure.

[0007] A speaker comprises the above-mentioned T-iron and copper ring, wherein the copper ring comprises an inner ring wall and an outer ring wall which are coaxially distributed, and a slot which is engaged with a center column is formed between the inner ring wall and the outer ring wall. When the copper ring is engaged with the center column, the outer ring wall is located on the outside of the center column, and the inner ring wall is located in the groove or through hole.

[0008] It further includes an anti-magnetic cover, the magnet includes a main magnet and an auxiliary magnet, the main magnet and the auxiliary magnet are coaxially bonded to the upper and lower end surfaces of the chassis of the T-iron, the anti-magnetic cover is in the shape of a cylinder with an open top, the T-iron with a magnet installed is installed in the anti-magnetic cover, and the bottom of the anti-magnetic cover has an upward protrusion that cooperates with the inner wall of the auxiliary magnet to limit the position.

[0009] By implementing the utility model, the chassis of the T-iron has an annular protrusion that cooperates with the inner wall of the magnet to achieve precise placement of the magnet, so that the magnet can be conveniently and accurately placed at a fixed position of the T-iron. At the same time, the bonding surface between the chassis and the magnet has a knurled structure to increase the roughness, enhance the adhesion of the glue, and ensure the firmness and reliability of the bonding between the magnet and the T-iron. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional schematic diagram of the T-iron of the utility model;

[0011] Figure 2 is a schematic diagram of a copper ring;

[0012] Figure 3An internal view of the speaker.

[0013] As shown in the figure: chassis 1; center column 2; annular protrusion 3; knurling structure 4; through hole 5; knurling structure 6; copper ring 7; inner ring wall 8; outer ring wall 9; anti-magnetic cover 10; main magnet 11; auxiliary magnet 12; protrusion 13. DETAILED DESCRIPTION

[0014] Embodiments of the present utility model: Figure 1 As shown, a T-iron comprises a coaxially arranged chassis 1 and a center column 2, the chassis 1 having a coaxially arranged annular protrusion 3 which cooperates with the inner wall of a magnet to limit the position, the annular protrusion 3 being arranged so that the chassis 1 is stepped, and the low-positioned stepped surface is the bonding surface of the magnet. When the magnet is placed on the T-iron, it can be conveniently and accurately placed at a fixed position on the chassis 1 through the limiting of the annular protrusion 3, and the low-positioned stepped surface of the T-iron is the bonding surface bonded to the magnet. The present application provides a knurled structure 4 on the bonding surface to increase the roughness and enhance the adhesion of the glue, thereby improving the firmness and reliability of the bonding between the magnet and the T-iron.

[0015] As a preferred embodiment, the center of the central column 2 has a through hole 5 to facilitate heat dissipation.

[0016] As a preferred embodiment, the inner wall of the through hole 5 has a knurled structure 6.

[0017] A loudspeaker, such as Figures 2 to 3 As shown, the T-iron and the magnet installed on the T-iron are included. In order to increase the efficiency of the magnetic field (reduce leakage magnetic flux), a copper ring 7 is provided on the central column 2 of the T-iron. In order to facilitate and firmly install the copper ring 7 on the central column 2, the copper ring 7 includes a coaxially distributed inner ring wall 8 and an outer ring wall 9, and a slot for engaging with the central column 2 is formed between the inner ring wall 8 and the outer ring wall 9. When the copper ring 7 is engaged with the central column 2, the outer ring wall 9 is located on the outside of the central column 2, and the inner ring wall 8 is located in the through hole 5 and has an interference fit with the knurled structure 6 on the inner wall of the through hole 5, thereby increasing the contact area of ​​the interference fit and making the connection more stable.

[0018] As a preferred embodiment, the speaker includes an anti-magnetic cover 10, and the magnets include a main magnet 11 and an auxiliary magnet 12. The main magnet 11 and the auxiliary magnet 12 are coaxially bonded to the upper and lower end surfaces of the chassis 1 of the T-iron. The upper and lower end surfaces of the chassis 1 are respectively provided with annular protrusions 3 and knurled structures 4 that cooperate with the main magnet 11 and the auxiliary magnet 12, so that the main magnet 11 and the auxiliary magnet 12 can be accurately, conveniently and firmly bonded to the T-iron, thereby improving the sensitivity of the speaker. In the application, the anti-magnetic cover 10 is in the shape of a cylinder with an open top, and the T-iron equipped with a magnet is installed in the anti-magnetic cover 10. The bottom of the anti-magnetic cover 10 has an upwardly protruding protrusion 13 that cooperates with the inner wall of the auxiliary magnet 12 to limit the position. The T-iron equipped with a magnet can be accurately placed in the anti-magnetic cover 10. The anti-magnetic cover 10 has the function of absorbing and conducting magnetism, which can prevent the magnet from emitting a magnetic field outward, thereby improving the performance of the speaker.

Claims

1. A T-iron, comprising a coaxially arranged chassis and a center column, characterized in that: The chassis has an annular protrusion coaxially arranged to cooperate with the inner wall of the magnet for limiting position, and the bonding surface between the chassis and the magnet has a knurling structure.

2. The T-iron according to claim 1, characterized in that: The center of the central column has a groove or a through hole.

3. The T-iron according to claim 2, characterized in that: The inner wall of the groove or through hole has a knurling structure 1.

4. A loudspeaker, characterized in that: It includes a T-iron and a copper ring as described in any one of claims 1 to 3, wherein the copper ring includes an inner ring wall and an outer ring wall which are coaxially distributed, and a slot for engaging with a center column is formed between the inner ring wall and the outer ring wall. When the copper ring is engaged with the center column, the outer ring wall is located on the outside of the center column, and the inner ring wall is located in the groove or through hole.

5. The loudspeaker according to claim 4, characterized in that: It includes an anti-magnetic cover, the magnet includes a main magnet and an auxiliary magnet, the main magnet and the auxiliary magnet are coaxially bonded to the upper and lower end surfaces of the chassis of the T-iron, the anti-magnetic cover is in the shape of a cylinder with an open top, the T-iron with a magnet installed is installed in the anti-magnetic cover, and the bottom of the anti-magnetic cover has an upward protrusion that cooperates with the inner wall of the auxiliary magnet to limit the position.

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