TWM617964U - Diaphragm and sound generating device - Google Patents

Abstract

There is provided a diaphragm and a sound generating device. The diaphragm includes a first piece of diaphragm and a second piece of diaphragm. The first piece of diaphragm includes a first main body portion and a first folding ring portion extending outward from a partial area of the edge of the first main body portion, and the second piece of diaphragm includes a second main body portion and a second folding ring portion extending outward from a partial area of the edge of the second main body portion. Among them, the first main body portion and the second main body portion are overlapped. The first folding ring portion is adjacent to the second folding ring portion, and the elastic modulus of the first folding ring portion is smaller than the elastic modulus of the second folding ring portion. The first folding ring portion and the second folding ring portion with different elastic modulus can reduce the stress difference of each part of the diaphragm, so that the diaphragm is not easily broken, thereby avoiding sound distortion of the sound generating device.

Description

Diaphragm and sound device

This creation relates to the field of audio equipment, in particular to a diaphragm and a sounding device.

The sound generating device represented by the speaker is a very common electroacoustic transducer. Among them, the moving coil speaker passes an electrical signal to the voice coil in the magnetic gap generated by the magnetic circuit system, so that the voice coil is moved by ampere force, driving the diaphragm to vibrate, thereby pushing the air to produce sound.

At present, the diaphragm fold ring of the loudspeaker is composed of the same kind of diaphragm material. When the diaphragm vibrates up and down, the corner portion of the fold ring deforms larger and the stress is also larger, and the middle portion of the fold ring deforms smaller and the stress is also smaller. When the amplitude of the diaphragm is large, the stress difference between the corners of the fold ring and the middle of the fold ring is more obvious, which leads to the phenomenon of membrane breakage at the corners of the fold ring, which causes the sound of the speaker to be distorted.

This creation provides a vibrating membrane and a sounding device, which can reduce the stress difference of each part of the folding ring by forming a complete folding ring with different elastic modulus.

In the first aspect, this creation provides a diaphragm, which includes: The first diaphragm includes a first main body portion and a first folding ring portion extending outward from a partial area of the edge of the first main body portion; and The second diaphragm includes a second main body portion and a second folding ring portion extending outward from a partial area of the edge of the second main body portion; Wherein, the first main body portion is overlapped with the second main body portion, the first folding ring portion is adjacent to the second folding ring portion, and the elastic modulus of the first folding ring portion is less than The modulus of elasticity of the second ring portion.

Further, the first folding ring portion includes a first arched portion, the second folding ring portion includes a second arched portion, and the first arched portion and the second arched portion are matched and joined to each other .

Further, the first body part and the second body part are arranged in the same flat structure and connected by glue.

Further, the first main body portion and the second main body portion respectively have four corners, and the four corners of the first main body portion and the second main body portion are respectively arranged in a circular arc shape.

Further, the first main body portion and the second main body portion further respectively have four sides located between two correspondingly adjacent corners, and the first folding ring portion is defined by the The four corners extend outward; The second folding ring portion extends outward from the four sides of the second main body portion; The first folding ring portion and the second folding ring portion are joined into a ring shape and surround the first body portion and the second body portion.

Further, the first arched portion of the first folding ring portion has folds.

Further, the folds include a plurality of grooves arranged at intervals; The groove extends from the inside to the outside on the first arched portion of the first folding ring portion.

Further, the first folding ring portion and the second folding ring portion further include a first side portion and a second side extending outward from the first arched portion and the second arched portion The side portion, the first side portion and the second side portion are matched and joined to each other.

Further, the first main body part and the first folding ring part comprise a silicone structure or a thermoplastic polyester elastomer structure; The second main body part and the second folding ring part comprise a polyether ether ketone structure or a polyether imide structure.

In the second aspect, the present creation provides a sound emitting device, which includes the diaphragm as described in the first aspect.

The embodiment of the invention discloses a diaphragm and a sound emitting device. The diaphragm includes a first diaphragm and a second diaphragm. A first folding ring part extending outward from a partial area, and the second diaphragm includes a second main body part and a second folding ring part extending outward from a partial area of the edge of the second main body part. Wherein, the first main body portion is overlapped with the second main body portion, the first folding ring portion is adjacent to the second folding ring portion, and the elastic modulus of the first folding ring portion is less than The modulus of elasticity of the second ring portion. The first folding ring portion and the second folding ring portion with different elastic modulus can reduce the stress difference of each part of the diaphragm, so that the diaphragm is not easily broken, thereby avoiding sound distortion of the sound generating device.

The present creation is described below based on embodiments, but the present creation is not limited to these embodiments. In the detailed description of this creation below, some specific details are described in detail. Those with ordinary knowledge in the technical field can fully understand this creation without the description of these details. In order not to confuse the essence of this creation, the known methods, processes, procedures, components and circuits are not described in detail.

In addition, those with ordinary knowledge in the technical field should understand that the drawings provided here are for illustrative purposes, and the drawings are not necessarily drawn to scale.

Unless the context clearly requires it, similar words such as "include" and "include" in the specification should be interpreted as inclusive rather than exclusive or exhaustive meaning; that is, "including but not limited to" meaning.

In the description of this creation, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, in the description of this creation, unless otherwise stated, "multiple" means two or more.

Unless otherwise clearly specified and limited, the terms "installation", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or a whole; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be an internal communication between two elements or an interaction relationship between two elements, unless specifically defined otherwise. For those with general knowledge in the technical field, they can understand the specific meaning of the above terms in this creation according to the specific situation.

The following descriptions are only ideal embodiments of the creation, and are not used to limit the creation. For those with ordinary knowledge in the technical field, the creation can have various modifications and changes. Any modification, equal replacement, improvement, etc. made within the spirit and principle of this creation shall be included in the scope of protection of this creation.

1 to 2 are schematic diagrams of the structure of a diaphragm provided by this creative embodiment. As shown in Figs. 1 to 2, the diaphragm of this embodiment includes a first diaphragm 1 and a second diaphragm 2. Among them, the first diaphragm 1 includes a first main body portion 11 and a first folding ring portion 12 extending outward from a partial area of the edge of the first main body portion 11, and the second diaphragm 2 includes a second main body portion 21 and a second main body portion 21. The second folding ring portion 22 extends outward from a partial area of the edge of the two main body portions 21.

Further, the first main body portion 11 and the second main body portion 21 are overlapped, and the first folding ring portion 12 and the second folding ring portion 22 are adjacent to each other. It should be noted that, as shown in FIG. 2, the first main body portion 11 of this embodiment is stacked above the second main body portion 21. As an optional embodiment, the second main body portion 21 may also be stacked on the second main body portion 21. A main body 11 above.

It should be noted that the first body portion 11 and the second body portion 21 of this embodiment are provided in the same flat structure or sheet structure, and the first body portion 11 and the second body portion 21 can be made of hot melt glue or UV glue, etc. are glued together up and down.

Further, as shown in FIGS. 3 to 4, the first body portion 11 and the second body portion 21 of this embodiment have four corners respectively. As shown in FIGS. 1 to 4, the first body portion 11 and the second body portion 21 of this embodiment are rectangular, that is, the diaphragm of this embodiment is a rectangular diaphragm. As an optional embodiment, the first body portion 11 and the second body portion 21 may also be square or other shapes.

Furthermore, the first main body portion 11 and the second main body portion 21 respectively have four sides located between two corresponding adjacent corners, and the first folding ring portion 12 extends outward from the four corners of the first main body portion 11. Extending, the second folding ring portion 22 extends outward from the four sides of the second main body portion 21. It should be noted that the four corners of the first main body portion 11 are set in a circular arc shape, and the first folding ring portion 12 is adapted to the first main body portion 11 and is also set in a circular arc shape to ensure the stability of the structure. The first folding ring portion 12 and the second folding ring portion 22 are joined into a ring shape and surround the first body portion 11 and the second body portion 21. It should be noted that the first folding ring portion 12 and the second folding ring portion 22 can pass through Hot melt glue or UV glue, etc. are glued together. In some embodiments, the first folding ring portion 12 and the second folding ring portion 22 are joined into a rectangular or square ring shape.

It needs to be understood that for a rectangular diaphragm, the four corners deform more when vibrating. That is, the deformation of the first folding ring portion 12 is large, and the stress is also large. However, the deformation of the second folding ring portion 22 is small, and the stress is also small. When the amplitude of the diaphragm is large, the stress difference between the first folding ring portion 12 and the second folding ring portion 22 is more obvious.

Therefore, in this embodiment, the elastic modulus of the first folded ring portion 12 is smaller than the elastic modulus of the second folded ring portion 22. The elastic modulus is the amount of stress required to produce a unit strain, which is used to characterize the ability of a material to resist deformation. The greater the elastic modulus, the greater the stiffness of the material, and the less likely it is to undergo elastic deformation. In other words, the material of the first folding ring portion 12 in this embodiment is relatively soft, and the material of the second folding ring portion 22 is relatively hard.

Specifically, the materials of the first main body portion 11 and the first folding ring portion 12 of this embodiment are the same, which facilitates the manufacturing and molding of the first diaphragm 1. For the same reason, the material of the second body portion 21 and the second folding ring portion 22 of this embodiment are the same. More specifically, the first body portion 11 and the first folding ring portion 12 of this embodiment include a silicone structure or a thermoplastic polyester elastomer (TPEE) structure, that is, the film material of the first diaphragm 1 may be silicone or TPEE And other super-elastic materials. The relationship between the stress and strain of a superelastic material is determined by the strain energy density function. It has high recoverable ductility and small permanent deformation, which is suitable for diaphragms that require long-term reciprocating motion. The second main body part 21 and the second folding ring part 22 of this embodiment comprise a polyether ether ketone structure (PEEK) or a polyether imide (PEI) structure, that is, the membrane material of the second diaphragm 2 may be PEEK Or high modulus materials such as PEI, which not only have the characteristics of high strength and high modulus, but also have high fatigue resistance, which ensures that the diaphragm can be used for a long time. It should be understood that the first diaphragm 1 and the second diaphragm 2 of this embodiment can be formed by air pressure or a molding process, which is suitable for mass production and has the advantages of high production efficiency and low cost.

Further, in this embodiment, the first folding ring portion 12 includes a first arched portion 121, the second folding ring portion 22 includes a second arched portion 221, the first arched portion 121 and the second arched portion 221 Match and join each other. That is, the first folding ring portion 12 and the second folding ring portion 22 are matched with each other and joined to form a complete folding ring, which can support the suspension of the diaphragm, and also has the function of controlling the direction of movement and vibration of the diaphragm.

It should be noted that the first folding ring portion 12 and the second folding ring portion 22 of this embodiment further include a first side portion 122 and a first side edge portion 122 extending outward from the first arched portion 121 and the second arched portion 221 The second side portion 222, and the first side portion 122 and the second side portion 222 are matched and joined to each other. It should be further explained that the first side portion 122 and the second side portion 222 of this embodiment are joined to install the diaphragm. For example, the joined first side portion 122 and the second side portion 122 and the second side portion 122 are glued together. The two side parts 222 are installed on a certain sounding device, so as to realize the installation of the diaphragm. In this embodiment, it is necessary to ensure the consistency of the width and thickness of the first side portion 122 and the second side portion 222, so as to ensure the stability of the diaphragm structure and avoid structural or sound quality problems.

As shown in FIG. 3, the first arched portion 121 of the first folding ring portion 12 of this embodiment has folds a. Specifically, the fold a includes a plurality of grooves a1 arranged at intervals, and the grooves a1 extend from the inside to the outside on the first arched portion 121 of the first folding ring portion 12. The fold a in this embodiment is beneficial to enhance the rebound of the strength of the diaphragm, thereby improving the stability of vibration and avoiding distortion.

It needs to be understood that, as an optional implementation, for circular or other shaped diaphragms, the folding ring part with greater vibration deformation can also be set as a superelastic material, and the folding ring with less vibration deformation can also be set as a superelastic material. The part is set as a high-modulus material, so that the two folding ring parts can be joined into a circular diaphragm. That is to say, this creative embodiment includes but is not limited to a rectangular or other polygonal diaphragm with folded ring corners.

The embodiment of the present creation also provides a sound emitting device, which includes the above-mentioned diaphragm. It should be understood that the sound generating device of this embodiment also includes common accessories such as a bracket, a permanent magnet, and a voice coil.

The embodiment of the invention discloses a diaphragm and a sound emitting device. The diaphragm includes a first diaphragm and a second diaphragm. A first folding ring part extending outward from a partial area, and the second diaphragm includes a second main body part and a second folding ring part extending outward from a partial area of the edge of the second main body part. Wherein, the first main body portion is overlapped with the second main body portion, the first folding ring portion is adjacent to the second folding ring portion, and the elastic modulus of the first folding ring portion is less than The modulus of elasticity of the second ring portion. The first folding ring portion and the second folding ring portion with different elastic modulus can reduce the stress difference of each part of the diaphragm, so that the diaphragm is not easily broken, thereby avoiding sound distortion of the sound generating device. Through the double diaphragm arrangement of the first diaphragm and the second diaphragm, the parts of the diaphragm have different characteristics; the first folding ring part at the four corners is softer than the second folding ring part at the four sides, which can avoid the four corners Breaking under the condition of highly elastic deformation can also improve the support of the four sides and improve the vibration effect of the diaphragm; the first main body and the second main body are superimposed on each other, which can also increase the mechanical strength of the middle part of the diaphragm and improve the sound Effect.

The foregoing descriptions are only ideal embodiments of the creation, and are not used to limit the creation. For those with ordinary knowledge in the technical field, the creation can have various modifications and changes. Any modification, equal replacement, improvement, etc. made within the spirit and principle of this creation shall be included in the scope of protection of this creation.

1: the first diaphragm 11: The first main body 12: The first folding ring 121: The first arched part 122: first side part 2: second diaphragm 21: The second main body 22: The second folding ring part 221: The second arch 222: second side part a: folds a1: groove

[Figure 1] A schematic diagram of the structure of the diaphragm provided in this creative embodiment. [Figure 2] A schematic diagram of the exploded structure of the diaphragm provided in this creative embodiment. [Figure 3] A schematic diagram of the structure of the first diaphragm provided in this creative embodiment. [Figure 4] A schematic diagram of the structure of the second diaphragm provided by this creative embodiment.

1: the first diaphragm

11: The first main body

12: The first folding ring

121: The first arched part

122: first side part

2: second diaphragm

21: The second main body

22: The second folding ring part

221: The second arch

222: second side part

Claims (10)

A diaphragm, its characteristics include: The first diaphragm (1) includes a first main body portion (11) and a first folding ring portion (12) extending outward from a partial area of the edge of the first main body portion (11); and The second diaphragm (2) includes a second main body portion (21) and a second folding ring portion (22) extending outward from a partial area of the edge of the second main body portion (21); Wherein, the first main body part (11) and the second main body part (21) overlap, the first folding ring part (12) is adjacent to the second folding ring part (22), and the first folding ring The elastic modulus of the portion (12) is smaller than the elastic modulus of the second folded ring portion (22). The diaphragm according to claim 1, wherein the first folded ring portion (12) includes a first arched portion (121), and the second folded ring portion (22) includes a second arched portion (221), The first arched portion (121) and the second arched portion (221) match and engage with each other. The diaphragm according to claim 2, wherein the first body part (11) and the second body part (21) are arranged in the same flat structure and connected by glue. The diaphragm according to claim 3, wherein the first body part (11) and the second body part (21) have four corners respectively, and the first body part (11) and the second body part ( The four corners of 21) are respectively set as arcs. The diaphragm according to claim 4, wherein the first main body portion (11) and the second main body portion (21) respectively have four sides located between two adjacent corners, and the first fold The ring portion (12) extends outward from the four corners of the first main body portion (11); The second folding ring portion (22) extends outward from the four sides of the second main body portion (21); The first folding ring portion (12) and the second folding ring portion (22) are joined into a ring shape and surround the first body portion (11) and the second body portion (21). The diaphragm according to claim 5, wherein the first arched portion (121) of the first folded ring portion (12) has folds (a). The diaphragm according to claim 6, wherein the fold (a) includes a plurality of grooves (a1) arranged at intervals; The groove (a1) extends from the inside to the outside on the first arched portion (121) of the first folding ring portion (12). The diaphragm according to claim 2, wherein the first folding ring portion (12) and the second folding ring portion (22) further include the first arched portion (121) and the second arched portion (221) A first side portion (122) and a second side portion (222) extending outward, the first side portion (122) and the second side portion (222) are matched and joined to each other. The diaphragm according to claim 1, wherein the first main body part (11) and the first folding ring part (12) comprise a silicone structure or a thermoplastic polyester elastomer structure; The second main body part (21) and the second folding ring part (22) comprise a polyether ether ketone structure or a polyether imide structure. A sounding device, characterized by comprising the diaphragm according to any one of claims 1-9.

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