WO2021031928A1

WO2021031928A1 - Vibrating diaphragm and loudspeaker

Info

Publication number: WO2021031928A1
Application number: PCT/CN2020/108418
Authority: WO
Inventors: 罗冬梅
Original assignee: 朱达云
Priority date: 2019-08-21
Filing date: 2020-08-11
Publication date: 2021-02-25
Also published as: CN210986413U

Abstract

A vibrating diaphragm (10) and a loudspeaker (100), the vibrating diaphragm (10) comprising a conductive component (20). The vibrating diaphragm (10) is used to electrically connect a voice coil (30) and an external circuit, and the vibrating diaphragm (10) is installed within the loudspeaker (100).

Description

Vibrating membrane and speaker

Technical field

The utility model relates to the technical field of loudspeakers, in particular to a vibrating membrane and loudspeakers.

Background technique

A speaker is a transducer device that converts an electrical signal into an acoustic signal. There are many types of speakers. The main principle is that the audio energy uses electromagnetic, piezoelectric or electrostatic effects to make the cone or diaphragm vibrate and resonate with the surrounding air. And make a sound.

Traditional loudspeakers need to be electrically connected to the voice coil (coil) and the external circuit through brocade wire, whether it is external magnetic or internal magnetic, and brocade wire needs to pass through the gap between the paper cone and the elastic wave to the outside. In order to connect the external circuit, when the paper cone vibrates, if the vibration amplitude is too large, it may break the brocade wire and damage the speaker; in addition, if the vibration is divided, it will cause the sound effect to be distorted and affect the overall sound effect; When the voice coil and the external circuit are connected with thread or the line is too short, unnecessary noise will appear, which will affect the sound quality of the speaker; the silk wire itself is relatively small, and the process is more complicated when the circuit is connected, which may cause the connection to be unstable The brocade wire needs to be connected to the circuit through the terminal board, which makes the circuit connection cost higher; the need to leave a gap between the paper cone and the elastic wave will cause the speaker to be thicker and difficult to apply to the ultra-thin speaker.

Utility model content

Based on this, it is necessary for the present utility model to provide a vibrating membrane, which is installed in the speaker, so that the speaker has less noise, can reduce distortion, and has better sound effects; stable circuit connection, no breakage, and long life; product technology is simple, Low cost, lighter and thinner overall.

The utility model also provides a loudspeaker.

In order to achieve the purpose of the utility model, the utility model adopts the following technical solutions:

A vibrating membrane includes a conductive component used to electrically connect a voice coil and an external circuit.

The above-mentioned vibrating membrane is provided with conductive parts, which enable the vibrating membrane itself to connect the voice coil and the external circuit in a circuit, avoiding the use of brocade wires, so that when the vibrating membrane vibrates, the internal conductive parts are not affected by the vibration, so that Reduce the noise, even if the vibration is divided, the sound effect will not be distorted, so that the vibration can be balanced and the distortion can be reduced; the conductive parts are installed on the vibrating membrane, which will not break compared to the brocade wire, thereby increasing the overall service life of the speaker; When connecting the diaphragm and the circuit directly, the circuit connection is simpler and more stable; the conductive parts are directly connected to the circuit through the pad, making the circuit connection cost lower; the gap between the diaphragm and the elastic wave can be made smaller , So that the thickness of the entire speaker is smaller and thinner.

In some embodiments, the conductive component includes a conductive layer and an insulating layer connected to the surface of the conductive layer.

In some of these embodiments, the conductive layer is connected to the insulating layer through an adhesive layer.

In some embodiments, the vibrating membrane includes a body, and the conductive member is installed on one side of the body; or the conductive member is installed in the body so that the conductive member is not exposed outside the body Or the conductive component is inserted on the body.

In some embodiments, the conductive component is installed on the side of the body that is not exposed to the outside.

In some embodiments, the conductive member extends to the bottom position of the outer edge of the body.

In some of the embodiments, a conductive bracket electrically connected to the conductive component is installed at a portion of the body near the outer edge, and the bottom of the conductive bracket extends to the bottom of the outer edge of the body for connecting to the External circuit.

In some of the embodiments, the vibrating membrane includes a membrane body made of a conductive material, the conductive material includes a conductive layer and an insulating layer connected to the surface of the conductive layer, and a non-conductive isolation member is provided in the membrane body The non-conductive isolation member separates the membrane body into at least two parts, wherein any two parts are respectively used to electrically connect the voice coil and the external circuit, and the membrane body forms the conductive part.

In some of the embodiments, a center hole is opened in the center of the conductive member, and the conductive member is provided with a conductive inner ring corresponding to the edge of the center hole, and the conductive inner ring is provided with at least one for electrically connecting the sound The inner pad of the ring, the outer edge of the conductive component is provided with a conductive outer ring, and the conductive outer ring is provided with at least one outer pad for electrically connecting the external circuit.

The utility model also provides a loudspeaker, which includes a magnet and a voice coil matched with the magnet, and also includes the vibrating membrane, and the conductive parts are electrically connected with the voice coil and an external circuit, respectively.

Description of the drawings

FIG. 1 is a schematic diagram of the structure of the diaphragm according to a preferred embodiment of the present invention;

2 is a schematic diagram of the structure of a conductive component according to a preferred embodiment of the present invention;

Figure 3 is a schematic diagram of the internal structure of the vibrating membrane according to the second embodiment of the present invention, the vibrating membrane is basin-shaped;

4 is a schematic diagram of the internal structure of the vibrating membrane according to the third embodiment of the present invention, the vibrating membrane is basin-shaped;

5 is a schematic diagram of the internal structure of the vibrating membrane according to the fourth embodiment of the present invention, the vibrating membrane is basin-shaped;

6 is a schematic diagram of the internal structure of the vibrating membrane according to the fifth embodiment of the present invention, the vibrating membrane is basin-shaped;

Figures 7-10 are schematic diagrams of diaphragms of different shapes, which can be combined with conductive parts;

Fig. 11 is a top view of the diaphragm described in Fig. 1;

Figure 12 is a top view of the vibrating membrane according to the fourth embodiment of the present invention;

Fig. 13 is a schematic diagram of the structure of the speaker according to the fifth embodiment of the present invention.

detailed description

In order to facilitate the understanding of the utility model, the utility model will be described in a more comprehensive manner below. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present utility model more thorough and comprehensive.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the present invention. The terms used in the description of the utility model herein are only for the purpose of describing specific embodiments, and are not intended to limit the utility model.

Example one

Please refer to FIGS. 1, 3 and 4, the present invention provides a vibrating membrane 10, which includes a conductive member 20, and the conductive member 20 is respectively used for electrical connection with a voice coil 30 of a speaker and an external circuit.

The above-mentioned vibrating membrane is provided with conductive parts, which enable the vibrating membrane itself to connect the voice coil and the external circuit in a circuit, avoiding the use of brocade wires, so that when the vibrating membrane vibrates, the internal conductive parts are not affected by the vibration, thereby enabling Reduce the noise, even if the vibration is divided, the sound effect will not be distorted, so that the vibration can be balanced and the distortion can be reduced; the conductive parts are installed on the vibrating membrane, which will not break compared to the brocade wire, thereby increasing the overall service life of the speaker; When connecting the diaphragm and the circuit directly, the circuit connection is simpler and more stable; the conductive parts are directly connected to the circuit through the pad, making the circuit connection cost lower; the gap between the diaphragm and the elastic wave can be made smaller , So that the thickness of the entire speaker is smaller and thinner.

2, in one embodiment, in order to ensure the safety of the conductive component 20, the conductive component 20 includes a conductive layer 21 and an insulating layer 22 connected to the surface of the conductive layer 21. If the conductive component 20 is exposed to the outside, there will be no safety hazard. In addition, the safety of the operator can be ensured when the conductive component 20 is installed or when the circuit is electrically connected. The insulating layer 22 can also make the conductive member 20 more flexible and more convenient for combining with other materials. The insulating layer 22 can also enhance the rigidity and strength of other materials laminated with the conductive member 20, so that the vibration balance of the diaphragm is higher.

The number of layers of the insulating layer 22 can be one or more layers. For example, the conductive layer 21 is connected to an insulating layer 22 through an adhesive layer, or the surface of the insulating layer 22 is connected to an insulating layer 22 through an adhesive layer, and so on , Multiple insulating layers 22 can be provided.

The aforementioned conductive member 20 may be a printed circuit.

In an embodiment, the conductive layer 21 is connected to the insulating layer 22 through the glue layer 23. For example, the conductive layer 21 is made of a copper material, and the insulating layer 22 is made of, for example, PET (polyterephthalate plastic), PEEK (polyether ether ketone resin), PEI (polyether imide), and PEN (polynaphthalene two It is made of ethylene glycol formate) and other materials, which can play an insulating role.

Please refer to FIG. 1, FIG. 3 and FIG. 4. In one embodiment, the diaphragm 10 includes a main body 11, and the conductive component 20 is installed on one side of the main body 11. The main body 11 can be made of paper material, polypropylene material, aluminum alloy material or composite material, etc., all of which can achieve its purpose. During production, the conductive component 20 is directly glued and hot pressed on one side of the body 11.

The main body 11 includes a carcass 110 and a hanging side 111 (vibrating side). The hanging side 111 is connected to the edge of the carcass 110. The carcass 110 and the hanging side 111 can also be integrally formed.

The conductive layer 21, that is, the circuit diagram, can be made into a mesh or other shape, and the insulating layer 22 has the same shape as the main body 11, so that the overall shape of the conductive component 20 is the same or similar to that of the main body 11, and can be more adapted to the main body 11 to facilitate integration with The bodies 11 are connected together. For example, the shape of the insulating layer 22 is concave, convex, dome-shaped, conical, square, flat, racetrack, oval, etc.

1, in order to make the diaphragm 10 safe to use and beautiful in appearance, the conductive member 20 is pressed on the side of the body 11 that is not exposed, that is, the conductive member 20 is pressed on the side of the body 11 close to the magnet 40, which is not directly facing For people, safety can be guaranteed.

11, in an embodiment, when the vibrating membrane 10 is made into a basin shape, since the vibrating membrane generally has a hole in the middle, correspondingly, a central hole 22 is opened in the center of the conductive member 20, and the conductive member 20 corresponds to The edge of the central hole 22 is provided with a conductive inner ring 23, and the outer edge of the conductive component 20 is provided with a conductive outer ring 24.

1 and 3, the pad 201 includes an inner pad 25 and an outer pad 26. The number of the inner pad 25 and the outer pad 26 is at least one. The inner pad 25 is used to electrically connect the voice coil 30. The outer pad 26 is used to electrically connect an external circuit. The number of inner pads 25 and outer pads 26 may be multiple, and they are connected through multiple pads.

The inner pad 25 and the outer pad 26 can be arranged in suitable positions according to the overall shape of the speaker.

The above-mentioned vibrating membrane can be made into any shape, such as flat membrane shape, cone shape, basin shape, dome shape and ribbon shape, etc. According to the shape, pads are arranged at corresponding positions to connect the voice coil 30 and the external circuit. can. Please refer to Figure 7, which is the structure diagram of the convex edge paper cone. Please refer to Fig. 8 for the structure diagram of the convex-side diaphragm; refer to Fig. 9 for the structure diagram of the concave-side diaphragm; Please refer to Fig. 10 for the structure diagram of the square diaphragm. The conductive member 20 can be combined with the diaphragm of the above-mentioned structure.

Example two

3 and 4, the diaphragm of this embodiment is different from the first embodiment in that the conductive component 20 is installed in the body 11 so that the conductive component 20 is not exposed outside the body 11. In this way, the original appearance and material of the main body 11 are not affected. When manufacturing the vibrating membrane 10, the conductive member 20 is directly pressed into the body 11, the edge of the conductive member 20 is exposed to the body 11 and the pad 201 is provided for circuit connection.

Optionally, the conductive member 20 extends to the bottom position of the outer edge of the body 11. In this way, it is more convenient for the external circuit to connect the voice coil 30 and/or the conductive component 20, and the connection part is hidden. For example, when the diaphragm is in the shape of a flat diaphragm, both the voice coil 30 and the external circuit are connected to the bottom edge of the conductive member 20. When the diaphragm is in the shape of a basin, the external circuit is connected to the bottom edge of the conductive member 20. The ring 30 connects the center position of the conductive member 20. Of course, the conductive component 20 can also only extend to the edge position of the main body 11 to achieve circuit connection.

Example three

4, the diaphragm of this embodiment is different from the second embodiment in that the part of the main body 11 near the outer edge is installed with a conductive support 27 electrically connected to the conductive component 20, and the bottom of the conductive support 27 extends to the main body 11. The bottom position of the outer edge. In this way, the external circuit is connected to the voice coil 30 and/or the conductive member 20 from the bottom edge of the main body 11, and the conductive member 20 does not need to extend out of the main body, which facilitates the installation of the conductive member 20. For example, when the diaphragm is in the shape of a flat diaphragm, both the voice coil 30 and the external circuit are connected to the bottom edge of the conductive member 20. When the diaphragm is in the shape of a basin, the external circuit is connected to the bottom edge of the conductive member 20. The ring 30 connects the center position of the conductive member 20.

Example four

5, the diaphragm of this embodiment is different from the second embodiment in that a support bracket 28 is installed at the bottom of the body 11 near the outer edge, and the outer pad 26 of the conductive component 20 extends to the side of the support bracket 28 Part, so that the support bracket 28 supports the outer pad 26.

Example five

Please refer to FIG. 6, in the vibrating membrane of this embodiment, the conductive member 20 is inserted and placed on the main body 11, that is, the conductive member 20 is combined with the main body 11 in a similar weaving manner, which can also achieve its purpose.

Example Six

12, the vibration film of this embodiment is different from the first embodiment in that the body 11 is not provided. The vibration film includes a film body 12 made of a conductive material. The conductive material includes a conductive layer and is connected to the conductive layer. The insulating layer on the surface of the film body 12 is provided with a non-conductive isolation member 23 which separates the film body into at least two parts. The film body 12 forms a conductive member 20, wherein any two parts are provided with inner pads And the outer pads are respectively used to electrically connect the voice coil 30 with an external circuit. That is, the entire vibrating membrane is only composed of conductive parts 20, and the conductive parts 20 are externally insulated to ensure safety, and the non-conductive isolation part 23 separates the inside, so that each part is not connected, and two parts can be selected to form the positive and negative electrodes. So as to realize the circuit connection.

The other arrangements of the conductive member 20 in this embodiment are the same as in the first embodiment.

The vibrating membrane of this embodiment can be made into any shape, such as a flat membrane shape or a basin shape.

Example Seven

Referring to FIG. 13, this embodiment provides a speaker 100. The speaker 100 includes a magnet 40 and a voice coil 30 matched with the magnet 40. The speaker 100 also includes the diaphragm 10 of the first or second embodiment. The ring 30 and the external circuit are electrically connected, and the circuit is turned on after the connection, and the speaker can work normally. This embodiment shows the structure of an external magnetic cone-shaped speaker. Of course, the speaker 100 may be any type of speaker, and this embodiment only shows an implementation manner.

The above-mentioned embodiments only express several implementation modes of the present utility model, and the description is relatively specific and detailed, but it should not be understood as a limitation to the scope of the present utility model patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the utility model, several modifications and improvements can be made, and these all fall within the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

A vibrating membrane, characterized in that it comprises a conductive part for electrically connecting the voice coil and an external circuit; the conductive part comprises a conductive layer; the vibrating membrane further comprises a body, and the conductive part is mounted on the One side of the main body; or the conductive member is installed in the main body so that the conductive member is not exposed outside the main body; or the conductive member is inserted into the main body.
The diaphragm according to claim 1, wherein the conductive member includes an insulating layer connected to the surface of the conductive layer.
The vibrating membrane according to claim 2, wherein the conductive layer is connected to the insulating layer through a glue layer.
The diaphragm according to claim 1, wherein the conductive member is installed on a side of the body that is not exposed to the outside.
The vibrating membrane according to claim 1, wherein the conductive member extends to the bottom position of the outer edge of the body.
The vibrating membrane according to claim 1, wherein a conductive bracket electrically connected to the conductive component is installed at a portion of the body near the outer edge, and the bottom of the conductive bracket extends to the outer edge of the body. The bottom position is used to connect the external circuit.
The diaphragm according to claim 1, wherein a center hole is opened in the center of the conductive member, and the conductive member is provided with a conductive inner ring corresponding to the edge of the center hole, and the conductive inner ring is provided with at least An inner pad for electrically connecting to the voice coil, a conductive outer ring is provided on the outer edge of the conductive component, and at least one outer pad for electrically connecting to the external circuit is provided on the conductive outer ring.
A vibrating membrane, which is characterized in that it comprises a conductive part for electrically connecting a voice coil and an external circuit; the vibrating membrane includes a membrane body made of a conductive material, the conductive material includes a conductive layer and a connection In the insulating layer on the surface of the conductive layer, a non-conductive isolation member is provided in the film body, and the non-conductive isolation member separates the film body into at least two parts, wherein any two parts are respectively used to electrically connect the The voice coil and the external circuit, and the film body forms the conductive member.
The vibrating membrane according to claim 8, wherein a center hole is opened in the center of the conductive member, a conductive inner ring is provided on the edge of the conductive member corresponding to the center hole, and the conductive inner ring is provided with at least An inner pad for electrically connecting to the voice coil, a conductive outer ring is provided on the outer edge of the conductive component, and at least one outer pad for electrically connecting to the external circuit is provided on the conductive outer ring.
A loudspeaker comprising a magnet and a voice coil matched with the magnet, and is characterized in that it further comprises the diaphragm according to any one of claims 1-9, and the conductive member is respectively connected to the voice coil and the external circuit Electric connection.