CN210042193U

CN210042193U - Loudspeaker

Info

Publication number: CN210042193U
Application number: CN201921105365.5U
Authority: CN
Inventors: 许秀珍
Original assignee: Dongguan Yixin Electronic Technology Co Ltd; An Puu Hsin Co Ltd
Current assignee: Dongguan Yixin Electronic Technology Co Ltd; An Puu Hsin Co Ltd
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2020-02-07
Anticipated expiration: 2029-07-15

Abstract

A loudspeaker comprises a shell, a first vibrating diaphragm and a second vibrating diaphragm. The shell surrounds a first sound chamber and a second sound chamber which are independent from each other. The casing has a partition wall, and the partition wall is obstructed between the first sound chamber and the second sound chamber. The first diaphragm is arranged in the first sound chamber, the second diaphragm is arranged in the second sound chamber, and the vibration frequency of the second diaphragm is greater than that of the first diaphragm.

Description

Loudspeaker

Technical Field

The present invention relates to an acoustic device, and more particularly to a speaker.

Background

With the continuous progress of science and technology, electronic products are not developed towards the trend of light and miniaturization, and people can use miniaturized electronic products such as a radio or a walkman at any time and any place. In addition, due to the increasing popularity of personal digital products, for example, a common MP3 walkman, a mobile phone, a Personal Digital Assistant (PDA), or a notebook computer is indispensable in daily life. In addition, mobile phones have also emerged that combine radio and MP3 functionality. Regardless of the electronic products, in order to allow users to listen to the sound information provided by the electronic products without interfering with other people, the earphone has become an essential accessory of the electronic products. In addition, the headset provides a better sound transmission for the listener, allowing the listener to clearly hear and understand the sound content, unlike the situation where transmitting sound in air causes unclear conditions, and is not affected particularly during user movements, such as in sports, driving, vigorous activity, or noisy environments.

In order to make the earphone capable of covering medium, high and low-pitched audio frequencies, some earphones are provided with a high-pitched diaphragm and a medium-pitched diaphragm at the same time. However, it is known that the sound chambers of the high-pitched diaphragm and the medium-pitched diaphragm are communicated with each other, so that the high-frequency sound wave and the medium-low frequency sound wave affect each other and cannot be clearly distinguished. Further, this arrangement is likely to be unable to achieve a reduction in the size of the device due to the increased number of components.

SUMMERY OF THE UTILITY MODEL

The utility model provides a loudspeaker can make well low frequency sound wave and high frequency sound wave be distinct each other.

The utility model discloses a loudspeaker includes shell, first vibrating diaphragm and second vibrating diaphragm. The shell surrounds a first sound chamber and a second sound chamber which are independent from each other. The casing has a partition wall, and the partition wall is obstructed between the first sound chamber and the second sound chamber. The first diaphragm is arranged in the first sound chamber, the second diaphragm is arranged in the second sound chamber, and the vibration frequency of the second diaphragm is greater than that of the first diaphragm.

In an embodiment of the present invention, the housing includes an upper casing and a lower casing, the upper casing covers the lower casing to surround the first sound chamber and the second sound chamber, and the partition wall is formed on the upper casing.

In an embodiment of the present invention, the first sound chamber surrounds the second sound chamber.

In an embodiment of the present invention, the speaker includes a first voice coil, a second voice coil and a magnetic component, wherein the first voice coil is connected to the first diaphragm, the second voice coil is connected to the second diaphragm, and the magnetic component is disposed in the housing and corresponds to the first voice coil and the second voice coil.

In an embodiment of the present invention, the partition wall is connected to the magnetic member.

In an embodiment of the present invention, the magnetic assembly includes a first magnetic conduction member, a second magnetic conduction member and a magnet, the first magnetic conduction member and the second magnetic conduction member are respectively connected to two opposite ends of the magnet, the first voice coil is located between the first magnetic conduction member and the second magnetic conduction member, and the second voice coil is located between the first magnetic conduction member and the second magnetic conduction member.

In an embodiment of the invention, the speaker includes a circuit board, wherein the circuit board is disposed on an outer surface of the housing, the magnetic assembly has an opening, the housing has another opening, and the at least one conductive wire is adapted to be connected to the second voice coil and pass through the openings to be connected to the circuit board.

In an embodiment of the present invention, the housing has a plurality of air holes, and the air holes are respectively communicated with the first sound chamber and the second sound chamber.

In an embodiment of the invention, the speaker includes a plurality of damping members, and the damping members cover the air holes.

In an embodiment of the invention, the outer surface of the housing has a groove, and the microphone is adapted to be disposed in the groove.

In an embodiment of the invention, the outer surface of the housing has a groove, the groove is connected to the groove, and the wire is adapted to be connected to the microphone and disposed along the groove.

In an embodiment of the present invention, the first diaphragm and the second diaphragm do not overlap each other in an axial direction of the speaker.

Based on the above, in the speaker of the present invention, the first sound chamber corresponding to the first diaphragm (for example, the middle and low pitch diaphragm) and the second sound chamber corresponding to the second diaphragm (for example, the high pitch diaphragm) are independent and not communicated with each other through the separation of the partition wall of the housing, so as to avoid the mutual influence of the sound wave generated by the first diaphragm and the sound wave generated by the second diaphragm in the sound chamber. Thus, the loudspeaker can generate a muddy and deep middle-low sound and can also generate a clear and bright high sound.

In order to make the aforementioned and other features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a cross-sectional view of a speaker according to an embodiment of the present invention.

Fig. 2 is an exploded view of the loudspeaker of fig. 1.

Fig. 3 is an enlarged view of the upper case of fig. 2.

Detailed Description

Fig. 1 is a cross-sectional view of a speaker according to an embodiment of the present invention. Fig. 2 is an exploded view of the loudspeaker of fig. 1. Referring to fig. 1 and fig. 2, the speaker 100 of the present embodiment is, for example, applied to an earphone, and includes a housing 110, a first diaphragm 120, and a second diaphragm 130. The housing 110 encloses a first sound chamber 110a and a second sound chamber 110b that are independent of each other. The casing 110 has a partition wall 1101, and the partition wall 1101 is, for example, annular and is blocked between the first sound chamber 110a and the second sound chamber 110 b. The first diaphragm 120 is disposed in the first sound chamber 110a, and the second diaphragm 130 is disposed in the second sound chamber 110 b. The first diaphragm has a larger area and is made of a material with lower rigidity, for example, a mid-bass diaphragm, and the second diaphragm 130 has a smaller area and is made of a material with higher rigidity, for example, a treble diaphragm. That is, the vibration frequency of the second diaphragm 130 is greater than the vibration frequency of the first diaphragm 120.

Under this configuration, the first sound chamber 110a corresponding to the first diaphragm 120 (e.g., a mid-bass diaphragm) and the second sound chamber 110b corresponding to the second diaphragm 130 (e.g., a treble diaphragm) are isolated from each other and do not communicate with each other in the speaker 100 by the partition wall 1101 of the housing 110, so as to prevent the sound wave generated by the first diaphragm 120 and the sound wave generated by the second diaphragm 130 from affecting each other in the sound chambers. Accordingly, the speaker 100 can generate a medium-low sound with a rich thickness and a low depth through the first diaphragm 120, and can also generate a clear high sound through the second diaphragm 130.

In the present embodiment, the casing 110 includes an upper casing 114 and a lower casing 112, and the upper casing 114 covers the lower casing 112 to surround the first sound chamber 110a and the second sound chamber 110b between the upper casing 114 and the lower casing 112. The partition wall 1101 is formed in the upper case 114, for example, but the present invention is not limited thereto. In other embodiments, the partition wall 1101 may be formed at the lower housing 112. In the present embodiment, the upper casing 114 and the lower casing 112 are combined by, for example, gluing, however, the present invention is not limited to the assembly manner of the upper casing 114 and the lower casing 112.

In order to save the configuration space, the first sound chamber 110a is configured to surround the second sound chamber 110b, so that the first diaphragm 120 in the first sound chamber 110a and the second diaphragm 130 in the second sound chamber 110b are coaxially configured on approximately the same plane without overlapping each other in the axial direction of the speaker 100, and the thickness 100 of the speaker is not excessively increased.

Further, the speaker 100 of the present embodiment further includes a first voice coil 140, a second voice coil 150 and a magnetic assembly 160. The first voice coil 140 is connected to the first diaphragm 120, the second voice coil 150 is connected to the second diaphragm 130, and the magnetic element 160 is disposed in the casing 110 and corresponds to the first voice coil 140 and the second voice coil 150. The magnetic assembly 160 includes a first magnetic conductive member 162, a second magnetic conductive member 164, and a magnet 166. The first magnetic conductive member 162 is, for example, a magnetic conductive plate, the second magnetic conductive member 164 is, for example, magnetic steel, and the magnet 166 is, for example, a permanent magnet. The first magnetic conducting member 162 and the second magnetic conducting member 164 are respectively connected to two opposite ends of the magnet 166, the second magnetic conducting member 164 is disposed in the lower casing 112 and carries and accommodates the magnet 166 and the second magnetic conducting member 164, and the center of the first magnetic conducting member 162 is slightly concave downward to place the second diaphragm 130. A gap G1 is formed between the peripheral structure of the second magnetic conductive member 164 and the first magnetic conductive member 162, and the first voice coil 140 extends into the gap G1 and is located between the first magnetic conductive member 162 and the second magnetic conductive member 164. A gap G2 is formed between the central structure of the second magnetic conductive member 164 and the first magnetic conductive member 162, and the second voice coil 150 extends into the gap G2 and is located between the first magnetic conductive member 162 and the second magnetic conductive member 164.

When the first voice coil 140 receives an input signal and is actuated by a magnetic field provided by the magnetic element 160, the first diaphragm 120 is driven by the first voice coil 140 to vibrate, so as to generate a corresponding medium-low frequency sound wave. Similarly, when the second voice coil 150 receives an input signal to operate through the magnetic field provided by the magnetic element 160, the second diaphragm 130 is driven by the second voice coil 150 to vibrate, so as to generate a corresponding high-frequency sound wave. As described above, the first voice coil 140 and the second voice coil 150 share the magnetic assembly 160, so that the number of components of the speaker 100 can be reduced to save the configuration space.

In the present embodiment, the partition wall 1101 abuts against the magnetic member 160 to positively separate the first sound chamber 110a and the second sound chamber 110b into independent parts. In other embodiments, the first sound chamber 110a and the second sound chamber 110b can be separated by other suitable structures and methods, which are not limited by the present invention.

The following describes an electrical connection method of the speaker 100 of the present embodiment. The speaker 100 includes a circuit board 170, and the circuit board 170 is, for example, a terminal connection board and is disposed on an outer surface of the lower housing 112 of the housing 110. The second magnetic conductive member 164 of the magnetic assembly 160 has an opening 164a, the lower casing 112 of the casing 110 has another opening 112a, and a conducting wire (not shown) for transmitting an input signal to the second voice coil 150 can be connected to the second voice coil 150 and pass through the

openings

164a and 112a along the axial direction of the speaker 100 to be connected to the circuit board 170. On the other hand, a conductive wire (not shown) for transmitting an input signal to the first voice coil 140 may extend from the periphery of the side of the housing 110 to the circuit board 170.

In the present embodiment, the lower casing 112 of the casing 110 has a plurality of air holes 112b, and the openings 112a can be regarded as air holes, and the air holes are respectively communicated with the first sound chamber 110a and the second sound chamber 110 b. The speaker 100 further includes damping

members

180, 190 corresponding to the ventilation holes, and the damping

members

180, 190 cover the ventilation holes.

Fig. 3 is an enlarged view of the upper case of fig. 2. Referring to fig. 3, in the present embodiment, the outer surface of the upper shell 114 of the outer shell 110 (shown in fig. 2) has a groove 114a and a groove 114b connected to each other. A microphone (not shown) may be disposed in the recess 114a, and a wire (not shown) may be connected to the microphone and disposed along the groove 114b to connect to an audio noise reduction processing unit outside the speaker 100. Therefore, the audio noise reduction processing unit can perform audio noise reduction according to the sound output by the speaker 100 received by the microphone, so as to further improve the sound output quality of the speaker 100

In summary, in the speaker of the present invention, the first sound chamber corresponding to the first diaphragm (e.g. middle and low pitch diaphragms) and the second sound chamber corresponding to the second diaphragm (e.g. high pitch diaphragms) are isolated from each other by the separation of the partition wall of the housing, so as to avoid the mutual influence of the sound wave generated by the first diaphragm and the sound wave generated by the second diaphragm in the sound chamber. Thus, the loudspeaker can generate a muddy and deep middle-low sound and can also generate a clear and bright high sound. In addition, the first voice coil and the second voice coil can share the magnetic assembly, so that the number of components of the loudspeaker is reduced to save configuration space.

Although the present invention has been described in detail with reference to the above embodiments, it should be understood that the present invention is not limited to the above embodiments, and various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the present invention.

Description of the symbols

100: electronic device

110: outer casing

110 a: first sound chamber

110 b: second sound chamber

1101: partition wall

112: lower casing

112a, 164 a: opening holes

112 b: air vent

114: upper shell

114 a: groove

114 b: groove

120: first diaphragm

130: second diaphragm

140: first voice coil

150: second voice coil

160: magnetic assembly

162: first magnetic conduction piece

164: second magnetic conduction piece

166: magnet

170: circuit board

180. 190: damping member

G1: gap

G2: gap

Claims

1. A loudspeaker, comprising:

a housing enclosing a first chamber and a second chamber independent of each other, wherein the housing has a partition wall that is blocked between the first chamber and the second chamber;

the first diaphragm is arranged in the first sound chamber; and

and the second diaphragm is arranged in the second sound chamber, wherein the vibration frequency of the second diaphragm is greater than that of the first diaphragm.

2. The speaker of claim 1, wherein the enclosure includes an upper case and a lower case, the upper case covers the lower case to surround the first and second chambers, and the partition wall is formed in the upper case.

3. A loudspeaker according to claim 1, wherein the first chamber surrounds the second chamber.

4. The speaker of claim 1, comprising a first voice coil, a second voice coil, and a magnetic assembly, wherein the first voice coil is coupled to the first diaphragm, the second voice coil is coupled to the second diaphragm, and the magnetic assembly is disposed in the housing and corresponds to the first voice coil and the second voice coil.

5. The loudspeaker of claim 4, wherein the partition wall is connected to the magnetic assembly.

6. The speaker of claim 4, wherein the magnetic assembly comprises a first magnetic conductive member, a second magnetic conductive member and a magnet, the first magnetic conductive member and the second magnetic conductive member are respectively connected to two opposite ends of the magnet, the first voice coil is located between the first magnetic conductive member and the second magnetic conductive member, and the second voice coil is located between the first magnetic conductive member and the second magnetic conductive member.

7. The speaker of claim 4, comprising a circuit board, wherein the circuit board is disposed on an outer surface of the housing, wherein the magnetic assembly has an opening, wherein the housing has another opening, and wherein at least one wire is adapted to be connected to the second voice coil and to the circuit board through the opening.

8. The loudspeaker of claim 1, wherein the housing has a plurality of vents, the vents communicating with the first and second chambers, respectively.

9. The speaker of claim 8 including a plurality of damping members, said damping members covering said vents.

10. The loudspeaker of claim 1 wherein the outer surface of the housing has a recess, the microphone being adapted to be disposed in the recess.

11. The loudspeaker of claim 10 wherein said outer surface of said housing has a groove, said groove connecting said grooves, wires adapted to connect to said microphone and disposed along said groove.

12. The speaker of claim 1, wherein the first diaphragm and the second diaphragm do not overlap each other in an axial direction of the speaker.