CN210075564U

CN210075564U - Composite horn diaphragm

Info

Publication number: CN210075564U
Application number: CN201920868054.8U
Authority: CN
Inventors: 温增丰; 邓小林
Original assignee: Transound Electronics Co Ltd
Current assignee: Transound Electronics Co Ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-02-14
Anticipated expiration: 2029-06-11

Abstract

The utility model discloses a composite horn diaphragm, which comprises a first film made of a first material, a second film made of a second material different from the first material and a diaphragm ring part; the membrane ring part is provided with a first through hole, the first thin film is positioned in the first through hole, a space is reserved between the first thin film and the membrane ring part, and the second thin film is provided with a second through hole; the inner side and the outer side of the second film are respectively and compositely attached to the outer side periphery of the reverse side of the first film and the inner side periphery of one surface of the film ring part so as to cover the space between the outer side periphery and the inner side periphery; metal layers are plated on two sides of the first film, circuit structures are etched on the metal layers on the two sides, and the circuit structures on the two sides are electrically connected; borrow this, through the first film, the second film combined type laminating with different materials, make it improve the plane membrane low frequency to can make loudspeaker whole possess better tone quality when being applied to dull and stereotyped loudspeaker, improve user's experience effect, and easily preparation.

Description

Composite horn diaphragm

Technical Field

The utility model belongs to the technical field of the acoustic element technique and specifically relates to indicate a compound loudspeaker diaphragm.

Background

The dull and stereotyped loudspeaker diaphragm of among the prior art adopts single material preparation to form mostly, and low, well, high frequency can't be taken into account simultaneously to the dull and stereotyped loudspeaker diaphragm that single material preparation formed, and when being applied to dull and stereotyped loudspeaker on the dull and stereotyped loudspeaker diaphragm that single material preparation formed, dull and stereotyped loudspeaker's whole tone quality is not good enough, influences user's experience effect, can't satisfy the demand of better tone quality.

Therefore, a new technology needs to be developed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model discloses to the disappearance that prior art exists, its main objective provides a compound loudspeaker diaphragm, and it has improved the plane membrane low frequency to can make loudspeaker whole possess better tone quality when being applied to dull and stereotyped loudspeaker, improve user's experience effect.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a composite horn diaphragm comprises a first film made of a first material, a second film made of a second material different from the first material and a diaphragm ring part; the first film has two sides, and the two sides of the first film are respectively defined as a front side and a back side;

the membrane ring part is provided with a first through hole penetrating through two surfaces of the membrane ring part, the first membrane is positioned in the first through hole, a space is reserved between the first membrane and the membrane ring part, and the second membrane is provided with a second through hole penetrating through two surfaces of the second membrane; the inner side and the outer side of the second film are respectively and compositely attached to the outer side periphery of the reverse side of the first film and the inner side periphery of one surface of the film ring part so as to cover the space between the outer side periphery and the inner side periphery; the first film is provided with a main body exposed in the second through hole, and the film ring part is provided with an annular edge positioned at the periphery of the second film;

the first film is plated with metal layers on both sides, circuit structures are etched on the metal layers on both sides, and the circuit structures on both sides are electrically connected.

As a preferred scheme, the membrane ring part is a PCB board, a metal ring or a plastic ring.

Preferably, the first thin film has a connection portion for connecting to the film ring portion, the connection portion protrudes and extends from the outer side of the first thin film, and the reverse surface of the connection portion is bonded to one surface of the film ring portion.

Preferably, the first film is made of plastic material.

Preferably, the second film is a film made of liquid glue.

Preferably, the second film is a film made of liquid silica gel.

Preferably, the circuit structures on both sides of the first film are connected by a via.

Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly, can know by above-mentioned technical scheme, it is mainly through the first film that sets up different materials, the laminating of second film combined type, make it form combined type loudspeaker diaphragm, because first film, the soft or hard degree of second film is different, make first film, the well high low frequency performance of second film is different, thereby single material audio frequency speciality's limitation has been solved, the plane membrane low frequency has been improved, thereby can make loudspeaker wholly possess better tone quality when being applied to on the flat loudspeaker, user's experience effect has been improved.

To more clearly illustrate the structural features and technical means of the present invention and the specific objects and functions achieved thereby, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a schematic diagram of a first step in a manufacturing process according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a second step of the manufacturing process of the embodiment of the present invention;

FIG. 3 is a schematic view of a structure opposite to that shown in FIG. 2;

FIG. 4 is a schematic structural diagram of a third step of the manufacturing process of the embodiment of the present invention;

FIG. 5 is a schematic view of a structure opposite to that shown in FIG. 4;

FIG. 6 is a schematic structural diagram of a fourth step of the manufacturing process of the embodiment of the present invention;

FIG. 7 is a schematic diagram of the structure of the completed embodiment of the present invention;

fig. 8 is a schematic view of a structure opposite to the structure shown in fig. 7.

The attached drawings indicate the following:

10. first film 11, body

12. Connection part 20, second film

30. Diaphragm ring part 31, space

32. Annular rim 40, metal layer

50. Circuit structure 60, overlap region.

Detailed Description

Fig. 1 to 8 show specific structures of embodiments of the present invention.

The composite horn diaphragm comprises a first film 10 made of a first material, a second film 20 made of a second material different from the first material and a diaphragm ring part 30; the first film 10 has two sides, wherein the two sides of the first film 10 are respectively defined as a front side and a back side, wherein the side on which the large-area circuit is etched is defined as the front side (as shown in fig. 2), and the other side is defined as the back side (as shown in fig. 3); the membrane ring part 30 has a first through hole penetrating through two sides of the membrane ring part 30, the first membrane 10 is located in the first through hole, a space 31 is left between the first membrane 10 and the membrane ring part 30, and the second membrane 20 has a second through hole penetrating through two sides of the second membrane 20; the inner side and the outer side of the second film 20 are respectively adhered to the outer side periphery of the reverse side of the first film 10 and the inner side periphery of one side (the same side as the reverse side of the first film 10) of the film ring part 30 in a combined manner so as to cover the space 31 between the two; the first film 10 has a main body 11 exposed in the second through hole, and the film ring portion 30 has a ring edge 32 located at the periphery of the second film 20; the first film 10 is plated with metal layers 40 on both sides, circuit structures 50 are etched on the metal layers 40 on both sides, and the circuit structures 50 on both sides are electrically connected.

Preferably, the membrane ring part 30 may be a PCB board, a metal ring or a plastic ring, and is mainly used for supporting the first membrane 10 and the second membrane 20, and may be configured as a PCB board, a metal ring or a plastic ring according to actual requirements.

Specifically, the first film 10 has a connection portion 12 for connecting to the film loop portion 30, the connection portion 12 extends outward from the outer side of the first film 10, and the reverse side (the same side as the reverse side of the first film 10) of the connection portion 12 is bonded to one side of the film loop portion 30 (as shown in fig. 4); here, the connecting portions 12 are symmetrically disposed on both sides of the first film 10, so as to be stably located on the film ring portion 30.

In this embodiment, the first film 10 is a film made of plastic material, which may be a film made of LCP, PPS, PEN, PAR, or other plastic materials with good performance at medium and high frequencies; the second film 20 is a film made of liquid glue, and the second film 20 is preferably liquid silica gel; here, the first film 10 and the second film 20 are not limited to the above materials, and only the first film 10 and the second film 20 need to be made of different materials, which is not described herein.

In addition, in this embodiment, the circuit structures 50 on both sides of the first film 10 are preferably connected through vias, and of course, other ways may be adopted to connect the circuit structures 50 on both sides, which only needs to satisfy the electrical conduction of the circuit structures 50 on both sides, and thus, the description is omitted here.

The detailed manufacturing process of the embodiment comprises the following steps:

(1) plating: as shown in fig. 1, a first film 10 made of a first material is prepared, and a metal layer 40 is plated on both surfaces of the first film 10;

(2) etching a circuit: as shown in fig. 2 and 3, front-back circuit etching is performed on the metal layers 40 on both sides of the first film 10 to form a two-sided circuit structure 50, and preferably, the two-sided circuit structures 50 are electrically connected through vias; before etching, processing the whole membrane after the coating in the step (1) is finished into a single membrane corresponding to the size specification of the horn, and performing front-back circuit etching on the metal layers 40 on the two sides of the single membrane;

(3) fixing: as shown in fig. 4 and 5, a film ring portion 30 having a first through hole is prepared, the first film 10 with the circuit etched in step (2) is fixed on the film ring portion 30, and a gap 31 is left between the first film 10 and the film ring portion 30; here, before fixing, the single membrane in the step (2) has a connecting portion 12, and the reverse side of the connecting portion 12 is adhered to the membrane ring portion 30;

(4) coating liquid glue: as shown in fig. 6, a second material (i.e. liquid silicone rubber or other liquid glue) different from the first material of the first film 10 is uniformly coated on the outer periphery of the reverse side of the first film 10 and the inner periphery of one side of the film ring portion 30 to cover the gap 31 therebetween, and then the liquid glue is dried to form a second film 20 connected between the first film 10 and the film ring portion 30; and an overlapping area 60 is formed between the second film 20 and the first film 10 and between the film ring parts 30.

To sum up, the utility model discloses a design focus lies in, and it mainly is through the first film, the laminating of second film combined type that set up different materials, makes it form combined type loudspeaker diaphragm, because the soft or hard degree of first film, second film is different, makes the well low frequency performance of first film, second film different, thereby has solved the limitation of single material audio frequency speciality, has improved the plane membrane low frequency, thereby can make loudspeaker wholly possess better tone quality when being applied to dull and stereotyped loudspeaker, has improved user's experience effect.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. A composite horn diaphragm is characterized in that: the film ring part is arranged on the first surface of the first film; the first film has two sides, and the two sides of the first film are respectively defined as a front side and a back side;

2. The composite horn diaphragm of claim 1 wherein: the membrane ring part is a PCB plate, a metal ring or a plastic ring.

3. The composite horn diaphragm of claim 1 wherein: the first film is provided with a connecting part used for being connected to the film ring part, the connecting part extends outwards in a protruding mode from the outer side of the first film, and the reverse side of the connecting part is bonded to one side of the film ring part.

4. The composite horn diaphragm of claim 1 wherein: the first film is made of plastic materials.

5. The composite horn diaphragm of claim 1 wherein: the second film is a film made of liquid glue.

6. The composite horn diaphragm of claim 5 wherein: the second film is made of liquid silica gel.

7. The composite horn diaphragm of claim 1 wherein: the circuit structures on the two sides of the first film are connected through the through hole.