Loudspeaker

Abstract

The utility model relates to a loudspeaker, which belongs to the technical field of loudspeakers and comprises a vibrating diaphragm, a dome, a voice coil, a basin stand, a magnetic circuit assembly and a centering disk, the centering disk is arranged above or below the voice coil and adopts a flexible printed circuit (FPC), a centering disk bulge is arranged on the centering disk, and the magnetic circuit assembly is arranged on the centering disk bulge. The voice coil is bonded on the centring disk bulge, the centring disk bulge is formed by compositing a plurality of layers of polyimide at the position for bonding the voice coil in a hot pressing manner, so that the position for bonding the voice coil forms a bulge, the centring disk is arranged above or below the voice coil, the centring disk bulge is arranged on the centring disk, and the voice coil is bonded on the centring disk bulge; the position of the voice coil is adjusted through the protruding height of the centering disk; the centring disk is integrally designed, so that the bonding steps are reduced, the process is relatively simple, and the planeness is better than that of a traditional framework without deformation; compared with a traditional metal framework, the vibration mass is lighter, and the sensitivity is higher.

Description

Technical Field

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

[0002] Due to the limitations of the voice coil height and position, the speaker performance cannot reach the optimal level. It is necessary to place the voice coil at the position with the densest magnetic flux lines while keeping parameters such as the voice coil weight and resistance unchanged to improve the speaker performance.

[0003] The current solution is to bond a metal frame between the diaphragm dome and the voice coil, and to apply glue to bond the frame to the voice coil and between the frame and the diaphragm dome. The process is relatively complex and costly. Summary of the invention

[0004] The utility model aims to overcome the deficiencies of the above-mentioned traditional technology and provide a loudspeaker. A centering support is arranged above or below the voice coil, a centering support protrusion is arranged on the centering support, and the voice coil is bonded to the centering support protrusion, so that the voice coil is located at the position where the magnetic flux lines are most dense, and the magnetic field is fully utilized; the centering support is integrated with the design, the bonding steps are reduced, the process is relatively simple, and the flatness is better than that of the traditional skeleton and it will not be deformed; compared with the traditional metal skeleton, the vibration mass is lighter and the sensitivity is higher.

[0005] The purpose of the utility model is achieved through the following technical measures: a loudspeaker, including a diaphragm, a dome, a voice coil, a basin frame, a magnetic circuit assembly and a centering support, the centering support is arranged above or below the voice coil, the centering support adopts a flexible printed circuit board FPC, a centering support protrusion is provided on the centering support, and the centering support protrusion is formed by compounding multiple layers of polyimide at the position of bonding the voice coil by hot pressing, so that the position of bonding the voice coil forms a protrusion.

[0006] As a further improvement of the above technical solution:

[0007] The centering support is a first centering support, which is arranged above the voice coil, the first centering support is arranged above the basin frame, the diaphragm is arranged above the first centering support, and the magnetic circuit assembly is arranged below the basin frame.

[0008] The first centering support plate includes a first frame, the outer periphery of the first frame has the same shape as the outer periphery of the basin frame, the centering support plate protrusion is a first centering support plate protrusion, the first centering support plate protrusion is arranged inside the first frame, and the shape of the first centering support plate protrusion is the same as the shape of the voice coil.

[0009] A first connecting arm is connected between the first centering support piece protrusion and the first frame.

[0010] The width of the protrusion of the first centering support piece is less than or equal to the thickness of the voice coil and not less than 1 / 2 of the thickness of the voice coil.

[0011] The centering support is a second centering support, which is arranged below the voice coil, below the basin frame, the diaphragm is arranged above the basin frame, and the magnetic circuit assembly is arranged below the second centering support.

[0012] The centering support piece protrusion is a second centering support piece protrusion. The second centering support piece includes two parts that are symmetrically arranged on the left and right. Each part includes a second frame. The inner side of the second frame is connected to a second connecting arm.

[0013] The second connecting arm is connected to the second centering support protrusion, and the second centering support protrusion is arranged below the voice coil.

[0014] The width of the protrusion of the second centering support piece is not less than 1 / 2 of the thickness of the voice coil.

[0015] The voice coil is arranged in the basin frame, and the dome is arranged at the center of the diaphragm.

[0016] Due to the adoption of the above technical scheme, compared with the prior art, the utility model has the following advantages: the utility model arranges a centering support plate above or below the voice coil, arranges a centering support plate protrusion on the centering support plate, and the voice coil is bonded to the centering support plate protrusion. The position of the voice coil is adjusted by the height of the centering support plate protrusion. The height adjustment needs to be made according to the design height of the voice coil so that the voice coil is at the position where the magnetic flux lines are most dense, thereby making full use of the magnetic field; the integrated design of the centering support plate reduces the bonding steps, the process is relatively simple, and the flatness is better than that of the traditional skeleton and it will not be deformed; compared with the traditional metal skeleton, the vibration mass is lighter and the sensitivity is higher.

[0017] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the exploded structure of a speaker in Embodiment 1 of the utility model;

[0019] Figure 2 This is a schematic cross-sectional view of a speaker in Embodiment 1 of the present utility model;

[0020] Figure 3 for Figure 2 A schematic diagram of the structure of the first centering support piece;

[0021] Figure 4 This is a schematic diagram of the exploded structure of a speaker in Embodiment 2 of the present utility model;

[0022] Figure 5 This is a schematic cross-sectional view of a speaker in Embodiment 2 of the present utility model;

[0023] Figure 6 for Figure 5 Schematic diagram of the structure of the second centering support piece.

[0024] In the figure, 1-diaphragm, 2-dome, 3-first centering support plate, 4-voice coil, 5-basin, 6-magnetic circuit assembly, 7-second centering support plate, 8-first frame, 9-first connecting arm, 10-first centering support plate protrusion, 11-second frame, 12-second centering support plate protrusion, 13-second connecting arm. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined. Example

[0028] like Figure 1-3As shown, a loudspeaker comprises a diaphragm 1, a dome 2, a first centering support 3, a voice coil 4, a basin frame 5, and a magnetic circuit assembly 6. The first centering support 3 is arranged above the voice coil 4, the voice coil 4 is arranged in the basin frame 5, the first centering support 3 is arranged above the basin frame 5, the first centering support 3 adopts a flexible printed circuit board FPC, the first centering support 3 comprises a first frame 8, the outer periphery of the first frame 8 is the same as the outer periphery of the basin frame 5, a first centering support protrusion 10 is arranged inside the first frame 8, a first connecting arm 9 is connected between the first centering support protrusion 10 and the first frame 8, and the shape of the first centering support protrusion 10 is the same as that of the sound The voice coil 4 has the same shape. The first centering support plate protrusion 10 is formed by compounding multiple layers of polyimide at the position where the voice coil 4 is bonded by hot pressing, so that a protrusion is formed at the position where the voice coil 4 is bonded. The voice coil 4 is bonded to the first centering support plate protrusion 10. The position of the voice coil is adjusted by the height of the first centering support plate protrusion 10. The height adjustment needs to be made according to the design height of the voice coil so that the voice coil is at the position where the magnetic flux lines are the most dense and the magnetic field is fully utilized. The width of the first centering support plate protrusion 10 is less than or equal to the thickness of the voice coil 4 and not less than 1 / 2 of the thickness of the voice coil, which can prevent the glue of the voice coil 4 from overflowing and affecting the vibration space, and can also ensure the bonding strength of the voice coil 4.

[0029] The first centering support piece 3 is designed as an integrated piece, which reduces the bonding steps and has a relatively simple process. It also has better flatness than a traditional frame and will not deform. Compared with a traditional metal frame, it has a lighter vibration mass and a higher sensitivity.

[0030] The diaphragm 1 is arranged above the first centering support plate 3 , the dome 2 is arranged at the center of the diaphragm 1 , and the magnetic circuit assembly 6 is arranged below the basin frame 5 . Example

[0031] like Figure 4-6As shown, a loudspeaker includes a diaphragm 1, a dome 2, a basin frame 5, a voice coil 4, a second centering support piece 7, and a magnetic circuit assembly 6. The second centering support piece 7 is arranged below the voice coil 4, the voice coil 4 is arranged in the basin frame 5, the second centering support piece 7 is arranged below the basin frame 5, the second centering support piece 7 adopts a flexible printed circuit board FPC, and the second centering support piece 7 includes two parts that are symmetrically arranged on the left and right, each part includes a second frame 11, the inner side of the second frame 11 is connected to a second connecting arm 13, the second connecting arm 13 is connected to the second centering support piece protrusion 12, and the second connecting arm 13 on both sides is connected to the second centering support piece protrusion 12. The second centering support protrusion 12 is arranged below the voice coil 4. The second centering support protrusion 12 is formed by compounding a multilayer polyimide at the position where the voice coil 4 is bonded by hot pressing to form a protrusion at the position where the voice coil 4 is bonded. The voice coil 4 is bonded to the two second centering support protrusions 12. The position of the voice coil is adjusted by the height of the second centering support protrusion 12. The height adjustment needs to be made according to the design height of the voice coil so that the voice coil is at the position where the magnetic flux lines are the most dense and the magnetic field is fully utilized. The width of the second centering support protrusion 12 is not less than 1 / 2 of the thickness of the voice coil to ensure the bonding strength of the voice coil 4.

[0032] The second centering support plates 7 on both sides are of integrated design, which reduces the bonding steps, has a relatively simple process, and has better flatness than traditional frames and will not deform; compared with traditional metal frames, the vibration mass is lighter and the sensitivity is higher.

[0033] The diaphragm 1 is arranged above the basin frame 5 , the dome 2 is arranged at the center of the diaphragm 1 , and the magnetic circuit assembly 6 is arranged below the second centering support plate 7 .

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A loudspeaker, characterized in that: The invention comprises a diaphragm (1), a dome (2), a voice coil (4), a basin frame (5), a magnetic circuit assembly (6) and a centering support plate, wherein the centering support plate is arranged above or below the voice coil (4), the centering support plate adopts a flexible printed circuit board (FPC), and a centering support plate protrusion is provided on the centering support plate, and the centering support plate protrusion is formed by compounding multiple layers of polyimide at a position where the voice coil (4) is bonded by hot pressing, so that a protrusion is formed at the position where the voice coil (4) is bonded.

2. A loudspeaker according to claim 1, characterized in that: The centering support is a first centering support (3), the first centering support (3) is arranged above the voice coil (4), the first centering support (3) is arranged above the basin frame (5), the diaphragm (1) is arranged above the first centering support (3), and the magnetic circuit assembly (6) is arranged below the basin frame (5).

3. A loudspeaker according to claim 2, characterized in that: The first centering support (3) comprises a first frame (8), the outer periphery of the first frame (8) having the same shape as the outer periphery of the basin frame (5), the centering support protrusion being a first centering support protrusion (10), the first centering support protrusion (10) being arranged inside the first frame (8), and the shape of the first centering support protrusion (10) being the same as the shape of the voice coil (4).

4. A loudspeaker according to claim 3, characterized in that: A first connecting arm (9) is connected between the first centering support piece protrusion (10) and the first frame (8).

5. A loudspeaker according to claim 4, characterized in that: The width of the first centering support protrusion (10) is less than or equal to the thickness of the voice coil (4) and not less than 1 / 2 of the thickness of the voice coil.

6. A loudspeaker according to claim 1, characterized in that: The centering support is a second centering support (7), the second centering support (7) is arranged below the voice coil (4), the second centering support (7) is arranged below the basin frame (5), the diaphragm (1) is arranged above the basin frame (5), and the magnetic circuit assembly (6) is arranged below the second centering support (7).

7. A loudspeaker according to claim 6, characterized in that: The centering support piece protrusion is a second centering support piece protrusion (12). The second centering support piece (7) comprises two parts which are symmetrically arranged on the left and right. Each part comprises a second frame (11). The inner side of the second frame (11) is connected to a second connecting arm (13).

8. A loudspeaker according to claim 7, characterized in that: The second connecting arm (13) is connected to the second centering support piece protrusion (12), and the second centering support piece protrusion (12) is arranged below the voice coil (4).

9. A loudspeaker according to claim 8, characterized in that: The width of the second centering support protrusion (12) is not less than 1 / 2 of the thickness of the voice coil.

10. The loudspeaker according to claim 1, characterized in that: The voice coil (4) is arranged in the basin frame (5), and the dome (2) is arranged at the center of the diaphragm (1).

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