CN106851458B

CN106851458B - Sounding device

Info

Publication number: CN106851458B
Application number: CN201710131793.4A
Authority: CN
Inventors: 房晓斐
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2017-03-07
Filing date: 2017-03-07
Publication date: 2023-08-04
Anticipated expiration: 2037-03-07
Also published as: CN106851458A

Abstract

The invention relates to a sound generating device, which comprises a second shell which is rotatably connected with a first shell and is provided with a second rear sound cavity; the first shell is provided with a first through hole communicated with the first rear acoustic cavity, and the second shell is provided with a second through hole communicated with the second rear acoustic cavity; the first and second housings are configured to: the second shell is rotated to enable the second through hole on the second shell to be overlapped with or staggered from the first through hole on the first shell. According to the sound generating device, the second rear sound cavity communicated with the first rear sound cavity is arranged, so that the volume of the rear sound cavity of the sound generating device can be increased, and the low-frequency response of the sound generating device is improved; the second shell is rotated to adjust the communication flow of the first rear sound cavity and the second rear sound cavity, so that the purpose of adjusting sound quality is achieved, and different use requirements are met.

Description

Sounding device

Technical Field

The invention relates to the technical field of acoustics, in particular to a sound generating device, and especially relates to a sound generating device with adjustable sound quality.

Background

Along with the wide application of high-quality smart phones, pad and other portable electronic products, the requirements of people on headphones matched with the portable electronic products are also increasing. The earphone is required to be compact and to have high fidelity sound quality capable of reproducing various sound effects realistically. In addition, no matter what electronic products are, in order for a user to listen to the sound signal provided by the electronic products without disturbing other people, headphones have become an essential accessory for each electronic product.

The existing earphone comprises an earphone front shell, an earphone rear shell and a loudspeaker unit (loudspeaker) accommodated in the earphone front shell and the earphone rear shell. Because the favors of different earphone users on earphone frequency response are different; but also for different use environments, the earphone needs to be adjusted to different frequency responses to meet the needs of people. Therefore, there is a need for an earphone that can adjust the frequency response of the earphone according to personal needs, so as to adapt to different users and use environments.

Disclosure of Invention

It is an object of the present invention to provide a sound emitting device.

According to an aspect of the present invention, there is provided a sound generating apparatus including a first housing and a speaker unit disposed in the first housing, the speaker unit dividing an inner cavity of the first housing into a front sound cavity and a first rear sound cavity isolated from each other; the second shell is rotatably connected with the first shell and provided with a second rear acoustic cavity;

the first shell is provided with a first through hole communicated with the first rear acoustic cavity, and the second shell is provided with a second through hole communicated with the second rear acoustic cavity; the first and second housings are configured to: the second shell is rotated to enable the second through hole on the second shell to be overlapped with or staggered from the first through hole on the first shell.

Optionally, a hot-melting column serving as a rotating shaft is arranged on the outer side of the first shell, and a mounting hole matched with the hot-melting column is formed in the middle of the second shell.

Optionally, the first housing is provided with a collar of a flange, and the collar forms a positioning groove for positioning the second housing on the first housing.

Optionally, a limiting protrusion is arranged on the side wall of the flange, and a limiting groove matched with the limiting protrusion is formed in the edge of the end face of the second shell.

Optionally, the first through hole and the second through hole are both semicircular.

Optionally, a damping net covering the first through hole or the second through hole is further included.

Optionally, the second shell is further provided with an acoustic venting hole communicated with the second rear acoustic cavity.

Optionally, the first housing includes a first front housing and a first rear housing, and the second housing is rotatably connected to the first rear housing.

According to another aspect of the present invention, there is also provided a sound generating apparatus including a first housing and a speaker unit disposed in the first housing, the speaker unit dividing an inner cavity of the first housing into a front sound cavity and a first rear sound cavity isolated from each other; the second shell is fixedly connected with the first shell and is provided with a second rear acoustic cavity;

the first shell and the second shell are provided with sound channels communicated with the first rear sound cavity and the second rear sound cavity, and an adjusting device for adjusting the transmission quantity of the sound channels.

Optionally, the sound channel includes a first through hole disposed on the first housing and communicating with the first rear sound cavity, the adjusting device includes a rotating plate rotatably connected between the first housing and the second housing, and an adjusting hole for matching with the first through hole is disposed on the rotating plate;

or alternatively, the method can be used for processing,

the sound channel comprises a second through hole which is arranged on the second shell and communicated with a second rear sound cavity; the adjusting device comprises a rotating piece which is rotatably connected between the first shell and the second shell, and an adjusting hole which is matched with the second through hole is formed in the rotating piece.

According to the sound generating device, the second rear sound cavity communicated with the first rear sound cavity is arranged, so that the volume of the rear sound cavity of the sound generating device can be increased, and the low-frequency response of the sound generating device is improved; the second shell is rotated to adjust the communication flow of the first rear sound cavity and the second rear sound cavity, so that the purpose of adjusting sound quality is achieved, and different use requirements are met.

Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic structural view of a sound generating apparatus according to the present invention.

Fig. 2 is a cross-sectional view of fig. 1.

Fig. 3 is a schematic view of the sound emitting device of fig. 1 with the second housing separated from the first housing.

Fig. 4 is an exploded view of the sound emitting device of fig. 1.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.

Techniques and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

The invention provides a sound generating device which can be an earphone, such as an in-ear earphone, a half-in-ear earphone or a headphone; and may be a receiver, a speaker, or the like in a portable device such as a cellular phone or a Pad. The sound generating device comprises two rear sound cavities, and the requirements of adjusting different sound quality are met by adjusting the aperture of the channel communicated with the two rear sound cavities.

The structure of the sound generating apparatus of the present invention will now be described in detail by taking an earphone as an example. Referring to fig. 1 to 4, the sound generating apparatus of the present invention includes a first housing 1 and a speaker unit 13 provided in the first housing 1. The first housing 1 is configured in the shape of an earphone, and includes a first front case 1b and a first rear case 1a, and the first front case 1b and the first rear case 1a are fastened together to form the first housing 1 for accommodating the speaker unit 13.

The first housing 1 of the present invention is approximately cylindrical, and the speaker unit 13 is fixedly installed in the first housing 1 in a manner well known to those skilled in the art, so that the inner cavity of the first housing 1 is divided into a front sound cavity 6 and a first rear sound cavity 5 which are isolated from each other, so that sound emitted by the diaphragm of the speaker unit 13 can be transmitted to the outside through the front sound cavity 6.

For in-ear headphones, the front end position of the first front shell 1b also has an out-sound tube structure; in order to improve the wearing comfort of the user, a rubber sleeve 3 is further arranged on the outer side of the sound outlet tube structure, which is common knowledge of a person skilled in the art and will not be described in detail here.

The sound generating device of the invention further comprises a second shell 2 which is enclosed into an inner cavity, and the second shell 2 is rotationally connected with the first shell 1, so that the rotation angle of the second shell 2 can be adjusted. The inner cavity of the second housing 2 communicates with the first rear acoustic chamber 5 of the first housing 1 such that the inner cavity of the second housing 2 constitutes the second rear acoustic chamber 7 of the sound generating apparatus. Because the sound generating device is provided with two rear sound cavities, the volume of the rear sound cavities is increased, and the sound generating effect of the sound generating device is improved.

In order to equalize the pressure of the rear acoustic cavity, an acoustic venting hole 4 is provided on the second housing 2, and when the pressure of the rear acoustic cavity formed by the first rear acoustic cavity 5 and the second rear acoustic cavity 7 together is too high, the pressure can be relieved through the acoustic venting hole 4 provided on the second housing 2.

The second housing 2 of the present invention is preferably rotatably connected to the first rear housing 1a, and more preferably to the rear end surface of the first rear housing 1 a. The second housing 2 may be rotatably coupled to the rear end surface of the first rear housing 1a in a manner well known to those skilled in the art, for example, by a rotary shaft.

In view of the small size of the earphone, in order to reduce the mounting fittings, in a specific embodiment of the present invention, referring to fig. 3, a heat stake 11 is provided on the rear end face of the first rear case 1a, and a mounting hole 9 for fitting with the heat stake 11 is provided at a middle position (rotation axis position) of the second case 2. During assembly, the mounting hole 9 of the second shell 2 is sleeved on the hot-melt column 11 of the first rear shell 1a, and then the end head of the hot-melt column 11 is hot-melt shaped, so that the second shell 2 is prevented from falling off from the hot-melt column 11. At this time, the second housing 2 rotates about the heat stake 11 as a rotation axis with respect to the first rear case 1 a.

In order to facilitate the installation of the second housing 2, the second housing 2 of the present invention includes a cavity 2a open at the rear end, and an end cap 2b covering the rear end opening of the cavity 2 a.

In another embodiment of the present invention, referring to fig. 3, in order to rotatably connect the second housing 2 and the first rear housing 1a together, a ring of flanges 17 may be provided at the edge of the rear end surface of the first rear housing 1a, and the ring of flanges 17 may define a circular positioning groove on the rear end surface of the first rear housing 1 a. The front end of the second shell 2 can be installed and positioned in the positioning groove, and the matching degree of the positioning groove and the front end of the second shell 2 is designed, so that the rotation of the second shell 2 in the positioning groove can be realized.

Of course, for the stability of the structural assembly, the above-mentioned hot-melt column 11 and the positioning groove structure may be simultaneously provided, the second housing 2 may be prevented from being separated from the first rear housing 1a by the hot-melt column 11, and the rotation effect of the second housing 2 may be ensured by the cooperation of the positioning groove.

In the sound generating device of the present invention, in order to communicate the first rear acoustic chamber 5 with the second rear acoustic chamber 7, through holes may be provided in the end surfaces of the first rear case 1a and the second case 2 that face each other. Specifically, a first through hole 12 communicated with the first rear acoustic cavity 5 is arranged on the end surface of the first rear shell 1a for connecting with the second shell 2, and a second through hole 8 communicated with the second rear acoustic cavity 7 is arranged on the end surface of the second shell 2 for connecting with the first rear shell 1 a; the first rear acoustic chamber 5 and the second rear acoustic chamber 7 can be communicated by the butt joint of the first through hole 12 and the second through hole 8. Wherein the rotation between the first rear case 1a, the second case 2 is configured to: the second housing 2 is rotated so that the second through hole 8 in the second housing 2 and the first through hole 12 in the first rear housing 1a can overlap or be offset.

The shapes and distribution positions of the first through-holes 12 and the second through-holes 8 may be designed such that the second through-holes 8 may be completely overlapped, partially overlapped (partially offset), and completely offset with the first through-holes 12 when the second housing 2 is rotated about the heat stake 11.

For example, the second through hole 12 and the second through hole 8 may be semicircular or crescent, as shown in fig. 3. When the second housing 2 is rotated, the second through hole 8 on the second housing and the second through hole 12 on the first rear housing 1a can be overlapped together, so as to realize the penetration of the second through hole 8 and the second through hole 12, that is, the penetration of the first rear acoustic cavity 5 and the second rear acoustic cavity 7; and the second shell 2 is rotated, so that the overlapping degree of the first through hole 12 and the second through hole 8 can be adjusted, and the penetration degree of the first rear acoustic cavity 5 and the second rear acoustic cavity 7 is adjusted. The second casing 2 is further rotated, so that the second through hole 8 on the second casing is completely staggered from the second through hole 12 on the first rear casing 1a, the first rear acoustic cavity 5 is isolated from the second rear acoustic cavity 7, and the sound generating device only plays a role by the first rear acoustic cavity 5.

The first through hole 12 and the second through hole 8 of the present invention may be provided in one, respectively, and the flow rates of the first rear acoustic chamber and the second rear acoustic chamber may be adjusted by the degree of overlap between the first through hole 12 and the second through hole 8. The number of the first through holes 12 and the second through holes 8 may be plural. The degree of penetration of the first rear acoustic chamber 5 and the second rear acoustic chamber 7 can also be adjusted by the number of overlapping first through holes 12 and second through holes 8 when the second housing 2 is rotated.

In a preferred embodiment of the present invention, in order to limit the angle of rotation of the second housing 2, a limit protrusion 16 may be provided on a sidewall of the flange 17, referring to fig. 3. The stopper projection 16 extends from the inner wall of the flange 17 toward the center of the first rear case 1 a. The end surface edge of the second housing 2, which is used for being matched with the first rear housing 1a, is provided with a limit groove 10, and the limit groove 10 is matched with the limit protrusion 16, so that the rotation angle of the second housing 2 can be limited by the length of the limit groove 10 in the rotation process of the second housing 2.

In a preferred embodiment of the invention, a damping net 15 covering the first through hole 12 or the second through hole 8 is further included. The damping net 15 can reduce the amount of penetration of the first through-hole 12 or the second through-hole 8.

In the sound generating device with the above structure, the first through hole 12 and the hot melt pillar 11 are directly disposed on the first rear shell 1a, that is, when the material is injection molded, the first rear shell 1a, the first through hole 12 and the hot melt pillar 11 may be integrally molded. In a preferred embodiment of the invention, the first through-hole 12, the hot-melt pillar 11 may be integrated in a single component 14, which component 14 is assembled in a corresponding position of the first rear shell 1a by subsequent mounting, see fig. 4.

In the above embodiments, the adjustment of the flow of the rear acoustic cavity is realized by rotating the second housing 2. In another embodiment of the present invention, the first casing 1 and the second casing 2 are fixedly connected, and the first casing 1 and the second casing 2 are provided with a sound channel which is communicated with the first rear sound cavity 5 and the second rear sound cavity 7, and an adjusting device for adjusting the transmission quantity of the sound channel.

In this embodiment, the first housing 1 and the second housing 2 may be integrally molded by injection molding, while forming the first rear acoustic chamber 5, the second rear acoustic chamber 7, and the acoustic path communicating the first rear acoustic chamber 5, the second rear acoustic chamber 7. The adjusting device of the invention can be arranged in the sound channel to achieve the purpose of adjusting the transmission quantity of the sound channel.

For example, in a specific embodiment, the adjusting device may be a plug, and the degree to which the plug blocks the sound channel may be adjusted by the depth of insertion, so as to achieve adjustment of the transmission amount of the sound channel.

In another specific embodiment of the invention, the sound channel comprises a first through hole 12 arranged on the first housing 1 and communicated with the first rear sound cavity 5, and the adjusting device comprises a rotating plate rotatably connected between the first housing 1 and the second housing 2, and an adjusting hole matched with the first through hole 12 is arranged on the rotating plate. By rotating the rotation piece, the overlapping area between the first through hole 12 and the adjustment hole can be adjusted, and the adjustment of the transmission amount of the sound channel can be also achieved.

Of course, it is also possible for a person skilled in the art that the sound channel comprises a second through hole 8 arranged in the second housing 2 in communication with the second rear sound chamber 7, and that the adjusting means comprise a rotating plate rotatably connected between the first housing 1 and the second housing 2, which rotating plate is provided with an adjusting hole for cooperation with the second through hole 8. By rotating the rotation piece, the overlapping area between the second through hole 8 and the adjustment hole can be adjusted, and the adjustment of the transmission amount of the sound channel can be achieved as well.

While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A sound generating apparatus, characterized in that: the loudspeaker comprises a first shell (1) and a loudspeaker monomer (13) arranged in the first shell (1), wherein the loudspeaker monomer (13) divides the inner cavity of the first shell (1) into a front sound cavity (6) and a first rear sound cavity (5) which are isolated from each other; the device also comprises a second shell (2) which is rotationally connected with the first shell (1) and is provided with a second rear acoustic cavity (7);

a first through hole (12) communicated with the first rear acoustic cavity (5) is formed in the first shell (1), and a second through hole (8) communicated with the second rear acoustic cavity (7) is formed in the second shell (2); the first housing (1), the second housing (2) are configured to: the second housing (2) is rotated so that the second through hole (8) in the second housing (2) overlaps or is offset from the first through hole (12) in the first housing (1).

2. The sound emitting apparatus of claim 1 wherein: the hot-melt column (11) serving as a rotating shaft is arranged on the outer side of the first shell (1), and a mounting hole (9) matched with the hot-melt column (11) is formed in the middle of the second shell (2).

3. The sound emitting apparatus of claim 1 wherein: the first shell (1) is provided with a circle of flanges (17), and the circle of flanges (17) form a positioning groove for positioning the second shell (2) on the first shell (1).

4. A sound generating apparatus according to claim 3, wherein: the side wall of the flange (17) is provided with a limiting protrusion (16), and the edge of the end face of the second shell (2) is provided with a limiting groove (10) matched with the limiting protrusion (16).

5. The sound emitting apparatus of claim 1 wherein: the first through hole (12) and the second through hole (8) are semicircular.

6. The sound emitting apparatus of claim 1 wherein: further comprises a damping net (15) covering the first through hole (12) or the second through hole (8).

7. The sound emitting apparatus of claim 1 wherein: and the second shell (2) is also provided with a sound leakage hole (4) communicated with the second rear sound cavity (7).

8. The sound emitting apparatus of claim 1 wherein: the first shell (1) comprises a first front shell (1 b) and a first rear shell (1 a), and the second shell (2) is rotationally connected with the first rear shell (1 a).

9. A sound generating apparatus, characterized in that: the loudspeaker comprises a first shell (1) and a loudspeaker monomer (13) arranged in the first shell (1), wherein the loudspeaker monomer (13) divides the inner cavity of the first shell (1) into a front sound cavity (6) and a first rear sound cavity (5) which are isolated from each other; the device also comprises a second shell (2) which is fixedly connected with the first shell (1) and is provided with a second rear acoustic cavity (7);

the first shell (1) and the second shell (2) are provided with sound channels communicated with the first rear sound cavity (5) and the second rear sound cavity (7), and an adjusting device for adjusting the transmission quantity of the sound channels.

10. The sound emitting apparatus of claim 9 wherein: the sound channel comprises a first through hole (12) which is arranged on the first shell (1) and communicated with the first rear sound cavity (5), the adjusting device comprises a rotating piece which is rotatably connected between the first shell (1) and the second shell (2), and an adjusting hole which is matched with the first through hole (12) is arranged on the rotating piece;

or alternatively, the method can be used for processing,

the sound channel comprises a second through hole (8) which is arranged on the second shell (2) and communicated with a second rear sound cavity (7); the adjusting device comprises a rotating piece which is rotatably connected between the first shell (1) and the second shell (2), and an adjusting hole which is matched with the second through hole (8) is formed in the rotating piece.