Plane diaphragm loudspeaker

Abstract

The utility model discloses a plane diaphragm loudspeaker which comprises a first support, a first PCB, a voice coil diaphragm, a second PCB and a second support which are sequentially fixed in a clinging manner, wherein the first support, the first PCB, the voice coil diaphragm, the second PCB and the second support are fixed in a clinging manner; a first magnet and a second magnet are further included. According to the embodiment of the utility model, the magnets are arranged on the two surfaces of the voice coil diaphragm to enhance the magnetic field effect on the coil, so that the vibration of the voice coil diaphragm can be improved; and the hollow PCBs are arranged between the voice coil diaphragm and the two brackets, so that not only can the power supply of the coil be realized, but also enough vibration spaces can be formed in the vibration directions of the two surfaces of the voice coil diaphragm, and the sound production effect of the diaphragm loudspeaker is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a vibrating diaphragm loudspeaker technical field especially relates to a plane vibrating diaphragm loudspeaker. BACKGROUND

[0002] A plane vibrating diaphragm loudspeaker usually includes a coil, a magnet and a plane vibrating diaphragm, when audio current passes through the coil, the coil will generate a corresponding magnetic field, which interacts with the magnetic field of the magnet, so that the coil moves under force in the magnetic field, since the coil is closely connected with the plane vibrating diaphragm, the movement of the coil drives the plane vibrating diaphragm to vibrate synchronously, and the vibration of the vibrating diaphragm makes the surrounding air change, thereby forming sound waves and emitting sound.

[0003] Prior art 201820949384.5 discloses a plane vibrating diaphragm loudspeaker, which comprises an earmuff 1, a magnet assembly 3, a diaphragm assembly 2, a protective cover 5 and a back cover 4, however, the magnet assembly 3 and the diaphragm assembly 2 of the patent are adjacent, so that the vibration space of the diaphragm assembly 2 is limited, which is not conducive to its sound emission. UTILITY MODEL CONTENT

[0004] The utility model wants to solve the technical problem in, provide a plane vibrating diaphragm loudspeaker, can make the vibration direction of the two sides of the voice coil vibrating diaphragm all have enough vibration space, guarantee the sound emission effect of vibrating diaphragm loudspeaker.

[0005] In order to solve the above technical problem, the utility model discloses a plane vibrating diaphragm loudspeaker, which comprises the first support, the first PCB board, the voice coil vibrating diaphragm, the second PCB board and the second support that are fixed in sequence and closely;

[0006] The middle part of the first support and the second support is provided with a through hole, and a first groove for fixing the first magnet is arranged on the edge of the through hole of the first support on the side of the first support facing the voice coil vibrating diaphragm, and a second groove for fixing the second magnet is arranged on the edge of the through hole of the second support on the side of the second support facing the voice coil vibrating diaphragm;

[0007] The voice coil vibrating diaphragm is provided with a wave-shaped coil, the wave-shaped coil is formed by winding a straight coil through multiple 180-degree bends from one side of the voice coil vibrating diaphragm to the other side of the voice coil vibrating diaphragm, and the middle part of the first PCB board and the second PCB board is hollow to form a cavity, which provides vibration space for the voice coil vibrating diaphragm;

[0008] Each adjacent two first magnets are parallel, and the straight coil part of the wave-shaped coil is parallel to the first magnet, and the projection of each adjacent two first magnets on the voice coil vibrating diaphragm is located on the two sides of any straight coil part of the wave-shaped coil.

[0009] Each of two adjacent second magnets is parallel to the straight coil part of the wave-shaped coil, and the projection of each of two adjacent second magnets on the diaphragm is located on both sides of any straight coil part of the wave-shaped coil.

[0010] As an optional implementation, the second PCB is provided with positive and negative electrode contacts, the positive and negative electrode contacts are electrically connected with the coil of the diaphragm, and the power supply line is connected with the positive and negative electrode contacts and used for supplying power to the wave-shaped coil to generate a magnetic field.

[0011] As another optional implementation, the number of the first magnets is 3-15.

[0012] As another optional implementation, the first recess is located on the two side edges of the through hole of the first support, and the two ends of the first magnet are respectively placed on the two side first recesses; the first recess is provided with a first protruding column, and the first protruding column is used for spacing and limiting the adjacent first magnets.

[0013] As another optional implementation, on the side of the first support facing the diaphragm, the edge of the inner wall of the first recess in the direction of the through hole is connected with a step surface, the step surface is used for mounting the first magnet, the step surface is higher than the bottom of the first recess, and the first magnet exceeds the step surface on the first recess.

[0014] As another optional implementation, the diaphragm is further provided with tuning cotton, and the tuning cotton covers the through hole on the exposed surface of the first support.

[0015] As another optional implementation, the diaphragm is further provided with tuning paper, and the tuning paper covers the through hole on the exposed surface of the second support.

[0016] As another optional implementation, the second recess is located on the two side edges of the through hole of the second support, and the two ends of the second magnet are respectively placed on the two side second recesses; the second recess is provided with a second protruding column, and the second protruding column is used for spacing and limiting the adjacent second magnets.

[0017] As another optional implementation, on the side of the second support facing the diaphragm, the edge of the inner wall of the second recess in the direction of the through hole is connected with a step surface, the step surface is used for mounting the first magnet, the step surface is higher than the bottom of the second recess, and the second magnet exceeds the step surface on the second recess.

[0018] Compared with the prior art, the embodiments of the utility model have the following beneficial effects:

[0019] In this embodiment of the invention, magnets are placed on both sides of the voice coil diaphragm to enhance the magnetic field effect on the coil, thereby improving the vibration of the voice coil diaphragm. A hollow PCB board is placed between the voice coil diaphragm and the two supports, which can not only be used for powering the coil, but also ensure that there is sufficient vibration space in both vibration directions of the voice coil diaphragm, thus ensuring the sound production effect of the diaphragm speaker. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a planar diaphragm loudspeaker disclosed in an embodiment of this utility model;

[0022] Figure 2 This is a front structural schematic diagram of a first support with a first magnet in a planar diaphragm loudspeaker disclosed in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the back of the first support in a planar diaphragm loudspeaker disclosed in an embodiment of the present invention;

[0024] Figure 4 This is a partial structural schematic diagram of a planar diaphragm speaker disclosed in an embodiment of this utility model;

[0025] Figure 5 This is a schematic diagram of another part of the structure of a planar diaphragm loudspeaker disclosed in an embodiment of this utility model;

[0026] Figure 6 This is a front structural diagram of the second support in a planar diaphragm loudspeaker disclosed in an embodiment of the present utility model;

[0027] Figure 7 This is another structural schematic diagram of a planar diaphragm loudspeaker disclosed in an embodiment of this utility model. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Referring to Figure 1 The utility model discloses a kind of plane diaphragm loudspeakers, including voice coil diaphragm 3, first magnet 12, second magnet 52, first PCB board 2, second PCB board 4, first support 1 and second support 5;The first support 1, the first PCB board 2, the voice coil diaphragm 3, the second PCB board 4 and the second support 5 are sequentially closely fixed (can be fixed by bolt screw etc.

[0030] The middle part of the first support 1 and the second support 5 is provided with a through hole;On the side of the first support 1 facing the voice coil diaphragm 3, the edge of the through hole of the first support 1 is provided with a first groove 11 for fixing the first magnet 12;On the side of the second support 5 facing the voice coil diaphragm 3, the edge of the through hole of the second support 5 is provided with a second groove 51 for fixing the second magnet 52;

[0031] The voice coil diaphragm 3 is provided with a wave-shaped coil 31, which is formed by a straight coil starting from one side of the voice coil diaphragm 3 and winding to the other side of the voice coil diaphragm 3 through multiple 180-degree bends;The middle part of the first PCB board 2 and the second PCB board 4 is hollow to form a cavity, which provides vibration space for the voice coil diaphragm 3;

[0032] Each of two adjacent first magnets 12 is parallel, and the straight coil part of the wave-shaped coil 31 is parallel to the first magnet 12;The projection of each of two adjacent first magnets 12 on the voice coil diaphragm 3 is located on both sides of any straight coil part of the wave-shaped coil 31.

[0033] Each of two adjacent second magnets 52 is parallel, and the straight coil part of the wave-shaped coil 31 is parallel to the second magnet 52;The projection of each of two adjacent second magnets 52 on the voice coil diaphragm 3 is located on both sides of any straight coil part of the wave-shaped coil 31.

[0034] The utility model embodiment sets magnet on both sides of voice coil diaphragm 3 to enhance the magnetic field effect on coil, which can improve the vibration of voice coil diaphragm 3;Hollow PCB board is arranged between voice coil diaphragm 3 and two supports, which can not only be used for coil power supply, but also can have enough vibration space in the vibration direction of both sides of voice coil diaphragm 3, to ensure the sound effect of diaphragm loudspeaker.

[0035] In an alternative embodiment, the second PCB 4 is provided with positive and negative electrode contacts (not shown in the drawings), which are electrically connected to the coil of the diaphragm 3; and a power supply line 6 is further included, which is connected to the positive and negative electrode contacts for supplying power to the wave-shaped coil 31 to generate a magnetic field. The magnetic field strength of the coil can be controlled by controlling the supply voltage or current, etc.

[0036] In yet another alternative embodiment, the number of the first magnets 12 is 3-15.

[0037] In yet another alternative embodiment, the first recess 11 is located on the two side edges of the through hole of the first support 1, and the two ends of the first magnet 12 are respectively placed on the two side first recesses 11; the first recess 11 is provided with a first protruding column 13, which is used to separate and limit the adjacent first magnets 12.

[0038] In yet another alternative embodiment, on the side of the first support 1 facing the diaphragm 3, the edge of the inner wall of the first recess 11 facing the through hole direction is connected to a step surface 14, which is used to install the first magnet 12; the step surface 14 is higher than the bottom of the first recess 11, and the first magnet 12 exceeds the step surface 14 on the first recess 11.

[0039] In yet another alternative embodiment, a tuning cotton 7 is further included; the tuning cotton 7 covers the through hole on the exposed surface of the first support 1.

[0040] In yet another alternative embodiment, a tuning paper 8 is further included; the tuning paper 8 covers the through hole on the exposed surface of the second support 5.

[0041] In yet another alternative embodiment, the second recess 51 is located on the two side edges of the through hole of the second support 5, and the two ends of the second magnet 52 are respectively placed on the two side second recesses 51; the second recess 51 is provided with a second protruding column 53, which is used to separate and limit the adjacent second magnets 52.

[0042] In yet another alternative embodiment, on the side of the second support 5 facing the diaphragm 3, the edge of the inner wall of the second recess 51 facing the through hole direction is connected to a step surface 54, which is used to install the first magnet 12; the step surface 54 is higher than the bottom of the second recess 51, and the second magnet 52 exceeds the step surface 54 on the second recess 51.

[0043] The utility model discloses the content disclosed only for the preferable embodiment of the utility model, only for the technical scheme of the utility model is described, and it is not limited to it. Although the utility model is described in detail with reference to the foregoing embodiment, those skilled in the art should understand that the technical scheme recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently. The modification or replacement does not change the essence of the corresponding technical scheme, and does not deviate from the spirit and scope of the utility model embodiments.

Claims

1. A planar diaphragm loudspeaker, characterized by, It comprises a first support, a first PCB board, a voice coil diaphragm, a second PCB board and a second support fixed in sequence; it also comprises a first magnet and a second magnet; The middle part of the first support and the second support is provided with a through hole; on the side of the first support facing the voice coil diaphragm, the edge of the through hole of the first support is provided with a first groove for fixing the first magnet; on the side of the second support facing the voice coil diaphragm, the edge of the through hole of the second support is provided with a second groove for fixing the second magnet; The voice coil diaphragm is provided with a wave-shaped coil formed by a straight coil starting from one side of the voice coil diaphragm and winding to the other side of the voice coil diaphragm through multiple 180-degree bends; the middle part of the first PCB board and the second PCB board is hollow to form a cavity for providing vibration space for the voice coil diaphragm; Each adjacent two first magnets are parallel, and the straight coil part of the wave-shaped coil is parallel to the first magnet; the projection of each adjacent two first magnets on the voice coil diaphragm is located on both sides of any straight coil part of the wave-shaped coil; Each adjacent two second magnets are parallel, and the straight coil part of the wave-shaped coil is parallel to the second magnet; the projection of each adjacent two second magnets on the voice coil diaphragm is located on both sides of any straight coil part of the wave-shaped coil.

2. A planar diaphragm loudspeaker according to claim 1, wherein, The second PCB board is provided with positive and negative electrode contacts electrically connected with the coil of the voice coil diaphragm; it also comprises a power line; the power line is connected with the positive and negative electrode contacts for supplying power to the wave-shaped coil to generate a magnetic field.

3. A planar diaphragm loudspeaker according to claim 1, wherein, The number of the first magnets is 3-15.

4. A planar diaphragm loudspeaker according to claim 1, wherein, The first groove is located on the two side edges of the through hole of the first support, and the two ends of the first magnet are respectively placed on the two side first grooves; the first groove is provided with a first protruding column for separating and limiting adjacent first magnets.

5. A planar diaphragm loudspeaker according to claim 1, wherein, On the side of the first support facing the voice coil diaphragm, the edge of the inner wall of the first groove facing the through hole direction is connected with a step surface for installing the first magnet; the step surface is higher than the bottom of the first groove, and the first magnet exceeds the step surface on the first groove.

6. A planar diaphragm loudspeaker according to claim 1, wherein, It also comprises tuning cotton; the tuning cotton covers the through hole on the exposed surface of the first support.

7. A planar diaphragm loudspeaker according to claim 1, wherein, It also comprises tuning paper; the tuning paper covers the through hole on the exposed surface of the second support.

8. A planar diaphragm loudspeaker according to claim 1, wherein, The second groove is located on the two side edges of the through hole of the second support, and the two ends of the second magnet are respectively placed on the two side second grooves; the second groove is provided with a second protruding column for separating and limiting adjacent second magnets.

9. A planar diaphragm loudspeaker according to claim 1, wherein, On the side of the second support facing the voice coil diaphragm, the edge of the inner wall of the second groove facing the through hole direction is connected with a step surface for installing the first magnet; the step surface is higher than the bottom of the second groove, and the second magnet exceeds the step surface on the second groove.

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