TW201532452A - Earphone with passive diaphragm - Google Patents

Abstract

An earphone, comprises a housing, a speaker driver and a passive diaphragm, wherein the housing at least includes a sound hole, and the speaker driver is disposed within the housing. The passive diaphragm includes a diaphragm main body and a counterweight member, the passive diaphragm is disposed between the sound hole and the speaker driver, and the counterweight member is buried within the diaphragm main body or attached to the top or bottom surface of the diaphragm main body. Thereby, with the configuration of the passive diaphragm the earphone is effectively improved in the sound performance, and the counterweight member of the passive diaphragm can be securely connected with the diaphragm main body, so that even if the diaphragm main body is subjected to severe vibration, the counterweight member is never released.

Description

Headphone with passive diaphragm

The invention relates to earphones, in particular to an earphone with a passive diaphragm inside.

Passive diaphragm, also known as passive radiator, is usually placed in the speaker cabinet together with the speaker unit, and allows the speaker unit to share the back cavity with the passive diaphragm, so that when the speaker unit sounds, the speaker unit is The air compressed by the back cavity is transmitted to the passive diaphragm, which indirectly drives the passive diaphragm to sound. Therefore, for a speaker with a small back cavity volume, the resonance effect of the back cavity can be enhanced by the help of a passive diaphragm, and the overall sound field performance of the speaker can be optimized.

However, the current application of passive diaphragms is mostly limited to large speakers and not seen in headphones, while the back cavity of headphones is inherently small, so its resonance and bass dive effects are limited, so if the passive diaphragm can be reduced And set in the headset, it will effectively optimize the overall sound performance of the headset and enhance the competitiveness of the market.

In view of this, the main object of the present invention is to provide an earphone that can enhance the resonance effect of the back cavity of the earphone and optimize the sound performance of the earphone.

Another object of the present invention is to provide an ear with a passive diaphragm inside. The weight of the passive diaphragm can connect the diaphragm more firmly.

In order to achieve the above object, the present invention provides an earphone comprising a casing, a speaker unit and a passive diaphragm, wherein the casing comprises at least one sound hole, and the speaker unit is disposed in the casing. The passive diaphragm comprises a diaphragm body and a weight member, the passive diaphragm is disposed between the sound hole and the speaker unit, and the weight member is embedded inside the diaphragm body.

In addition, the present invention further provides an earphone comprising a casing, a speaker unit and a passive diaphragm, wherein the casing comprises at least one sound hole, and the speaker unit is disposed in the casing. The passive diaphragm comprises a diaphragm body and a weight member. The passive diaphragm is disposed between the sound hole and the speaker unit, and the weight member is adhered to one side of the top surface or the bottom surface of the diaphragm body.

Thereby, the earphone effectively optimizes the sound performance of the earphone by providing a passive diaphragm, and the weight member of the passive diaphragm inside can stably connect the diaphragm body, even if the diaphragm body vibrates violently, the weight member does not Will be separated.

Preferably, the diaphragm body is made in a pre-opening manner, and at least a uniform hole is formed in the diaphragm body for the material for making the weight member, such as polyurethane (PU), through which The through hole is injected into the inside of the diaphragm main body.

In addition, in the present invention, the diaphragm main body and the weight member composed of the double-layer composite layer may be prepared in advance, and the weight member may be firmly embedded between the double-layer composite layers by pressing.

1‧‧‧ headphone

10‧‧‧shell

11‧‧‧ first shell

12‧‧‧ second casing

121‧‧‧ Ring groove

122‧‧‧ inner flange

13‧‧‧ Cover

14‧‧‧First chamber

141‧‧‧The first sound hole

15‧‧‧Second chamber

151‧‧‧Second sound hole

152‧‧‧Sub sound hole

20‧‧‧Speaker unit

30‧‧‧ Passive diaphragm

31‧‧‧ Diaphragm body

311‧‧‧through holes

312‧‧‧ accommodating chamber

32‧‧‧weight parts

33‧‧‧ hanging edge

40‧‧‧First Ventilation Network

41‧‧‧Second ventilation network

42‧‧‧ Third ventilation network

50‧‧‧pass diaphragm

60‧‧‧ Diaphragm body

61‧‧‧First composite layer

62‧‧‧Second composite layer

71,72‧‧‧ hanging edge

80‧‧‧weight parts

Fig. 1 is a cross-sectional view showing an earphone of a first embodiment of the present invention.

Fig. 2 is a cross-sectional view showing a passive diaphragm of the earphone according to the first embodiment of the present invention.

Fig. 3 is a cross-sectional view showing a passive diaphragm of the earphone of the second embodiment of the present invention.

Fig. 4 is a cross-sectional view showing a passive diaphragm of an earphone according to a third embodiment of the present invention.

In order to better understand the features of the present invention, the present invention provides a first embodiment and is described below in conjunction with the drawings. Please refer to Figures 1 to 2. The main components of the earphone 1 include a casing 10, a speaker unit 20 and a passive diaphragm 30. The structure of each component and the relationship between the components are as follows: Referring first to FIG. 1, the interior of the casing 10 is hollow. It is composed of a first outer casing 11 , a second outer casing 12 and an outer cover 13 . The second outer casing 12 is sleeved with the first outer casing 11 , and the second outer casing 12 is disposed at an end away from the first outer casing 11 . A ring groove 121 and an inner flange 122 are fixed to the second outer casing 12 by the ring groove 121.

The speaker unit 20 is fixed to the first housing 11 of the housing 10, and the speaker unit 20 partitions the internal space of the housing 10 from a first chamber 14 and a second chamber 15. The first chamber 14 defines a first sound hole 141 on the first casing 11 for the speaker unit 20 to sound and transmit to the user's ear. The second chamber 15 defines a second sound hole 151 on the outer cover 13 and a sound hole 152 in the second outer casing 12.

It should be noted that, in this embodiment, a first ventilation net 40, a second ventilation net 41, and a third ventilation net are respectively added to the first sound hole 141, the second sound hole 151 and the auxiliary sound hole 152. 42 to adjust the sound effect and waterproof function, but the above ventilation network (40, 41 & 42) is an unnecessary component.

Referring to FIG. 2, the passive diaphragm 30 includes a diaphragm body 31 and a The weight member 32 and a hanging edge 33, wherein the hanging edge 33 surrounds and connects the outer periphery of the diaphragm main body 31, and the entire passive diaphragm 30 is fixed to the inner flange 122 of the second outer casing 12 by the hanging edge 33. And the passive diaphragm 30 shields the second sound hole 151. The diaphragm main body 31 and the suspension 33 are integrally formed by opening the mold in advance, and the diaphragm main body 31 has an accommodating chamber 312 therein. In this embodiment, the upper and lower sides of the diaphragm main body 31 are opened. There are two through holes 311, so that the accommodating chamber 312 can communicate with the outside of the diaphragm main body 31 through the four through holes 311, which are used for injecting a high-density material for making the weight member 32, so that The weight 32 can be stably formed and embedded in the accommodating chamber 312 inside the diaphragm main body 31.

It should be noted that the material of the diaphragm body 31 can be selected from a Mylar diaphragm, and the weight is The material of the member 32 may be selected from the group consisting of polyurethane (PU) or bismuth compound.

In use, when the speaker unit 20 sounds, the speaker unit 20 will compress the second The air inside the chamber 15 and the air are transmitted to the passive diaphragm 30, thereby indirectly driving the diaphragm body 31 of the passive diaphragm 30 to sound. Since the weight member 32 is firmly embedded and connected to the inside of the diaphragm main body 31, even if the diaphragm main body 31 vibrates violently, the weight member 32 is less likely to be detached from the diaphragm main body 31, thereby affecting the normal operation of the passive diaphragm 30. . The earphone 1 not only enhances the resonance of the second chamber 15 by the help of the passive diaphragm 30 and the tuning effect of the ventilation net 42 on the auxiliary sound hole 152, but also enables the earphone 1 to achieve the sound quality balance effect and enhance the sense of space. , thereby effectively optimizing the overall sound performance of the headset.

It should be noted that the mechanism of the passive diaphragm 30 of the present invention is relatively simple, so Helping mass production. In addition, the passive diaphragm 30 of the present invention is not limited to the earphone type, and it can also be applied to the headphone instead.

In addition, the passive diaphragm 30 can also be directly disposed on the inner wall surface of the outer cover 13. The second sound hole 151 is covered and covered, or the passive diaphragm 30 is fixed to the inner wall surface of the first chamber 14 and covers the first sound hole 141. Thus, the feeling of enhancing the spatial feeling can be similarly achieved. The number of the through holes 311 is not necessarily four, and the through holes 311 may be added or only one may be left as needed.

The present invention further provides a second embodiment, please refer to FIG. Among them, the headset 1 The diaphragm body 60 of the passive diaphragm 50 disposed therein is formed by stacking a first composite layer 61 and a second composite layer 62, and the first composite layer 61 and the second composite layer 62 each have a hanging edge 71&72. The outer circumferences of the two composite layers 61 & 62 are respectively surrounded and connected, and the weight member 80 is buried between the two composite layers 61 & 62 . When the passive diaphragm 50 is manufactured, the first composite layer 61 and the second composite layer 62 may be prepared in advance, and the two composite layers 61 & 62 and the weight member 80 may be integrally joined by pressing. In this way, the effect that the weight member 80 is less likely to be detached from the diaphragm main body 60 can be achieved as well. Furthermore, the weight member 80 of the embodiment can be replaced with a prefabricated metal sheet, and the two composite layers 61 & 62 can also be made of different materials according to actual needs, thereby increasing the weight member 80 and the diaphragm body 60 on the material. s Choice.

In addition, in this embodiment, the injection molding can also be used instead of manufacturing. The weight member 80 is placed in the mold, and then the first composite layer 61 and the second composite layer 62 are sequentially or simultaneously ejected, so that the weight member 80 is less likely to be detached from the diaphragm body 60. Whether the pressing or injection molding is used, both of them can easily position the weight member 80, and the manufacturing process is also simple, thereby contributing to the mass production of the passive diaphragm 50.

The present invention further provides a third embodiment, please refer to FIG. 4, wherein the third implementation The main structure of the example is substantially the same as that of the first embodiment, and the main difference is that the weight member 80 of the passive diaphragm 50 provided inside the earphone 1 is adhered to the top surface of the diaphragm body 60, and is technical in the art. The person can change the weight member 80 to the bottom surface of the diaphragm body 60 as needed, so that the weight member 80 can be firmly adhered to the diaphragm body 60.

Finally, it must be noted that the constituent elements disclosed in the foregoing embodiments of the present invention are merely illustrative and are not intended to limit the scope of the present invention, and other structural changes that are easily conceivable, or alternatives to other equivalent elements. Changes should also be covered by the scope of the patent application for this case.

1‧‧‧ headphone

10‧‧‧shell

11‧‧‧ first shell

12‧‧‧ second casing

121‧‧‧ Ring groove

122‧‧‧ inner flange

13‧‧‧ Cover

14‧‧‧First chamber

141‧‧‧The first sound hole

15‧‧‧Second chamber

151‧‧‧Second sound hole

152‧‧‧Sub sound hole

20‧‧‧Speaker unit

30‧‧‧ Passive diaphragm

31‧‧‧ Diaphragm body

311‧‧‧through holes

312‧‧‧ accommodating chamber

32‧‧‧weight parts

33‧‧‧ hanging edge

40‧‧‧First Ventilation Network

41‧‧‧Second ventilation network

Claims (11)

An earphone comprising: a casing comprising at least one sound hole; a speaker unit disposed in the casing; and a passive diaphragm comprising a diaphragm body and a weight member, and the passive type The diaphragm is disposed between the sound hole and the speaker unit, wherein the weight member is embedded inside the diaphragm body. The earphone of claim 1, wherein the diaphragm body comprises two composite layers stacked on each other, the weight member being connected between the two composite layers. The earphone of claim 2, wherein the two composite layers are made of different materials respectively. The earphone of claim 2, wherein the two composite layers are joined by pressing or injection molding. The earphone of claim 1 or 2, wherein the surface of the diaphragm body is provided with at least a constant hole, so that the weight member enters the inside of the diaphragm body in an injection manner. The earphone of claim 5, wherein the weight member is made of polyurethane or a bismuth compound. An earphone comprising: a casing comprising at least one sound hole; a speaker unit disposed in the casing; and a passive diaphragm comprising a diaphragm body and a weight member, and the passive type The diaphragm is disposed between the sound hole and the speaker unit, wherein the weight member is adhered to the top surface or the bottom surface of the diaphragm body. The earphone of claim 1 or 7, wherein the speaker unit is fixed in the housing and The first inner chamber and the second chamber are separated from each other, and the at least one sound hole is provided in two, and is disposed on the inner wall surfaces of the first chamber and the second chamber, respectively. The passive diaphragm is one of a fixed sound hole and is shielded from the sound hole. The earphone of claim 8, wherein the passive diaphragm is an acoustic hole disposed in the second chamber. The earphone of claim 8, wherein the second chamber further has a sound hole between the passive diaphragm and the speaker unit. The earphone of claim 10, further comprising a ventilation network disposed on an inner wall surface of the speaker body and covering the auxiliary sound hole of the second chamber.