Acoustic low-pass filter and earphone

Abstract

The utility model provides an acoustic low-pass filter, which comprises a moving-iron horn main body, one side of the moving-iron horn main body is connected with a first sound tube, one end of the first sound tube is connected with an installation assembly, the installation assembly comprises an installation shell, and the left side and the right side of the installation shell are connected with installation tubes; and the damper main body is mounted in the mounting shell. According to the acoustic low-pass filter provided by the utility model, the mounting shell with the two mounting pipes is arranged between the first sound pipe and the second sound pipe, so that the damper main body can be mounted in the mounting shell, and when the damper main body is damaged, the mounting shell and the sound pipes can be detached, so that the damper main body is convenient to replace.

Description

Technical Field

[0001] The utility model relates to the field of earphone equipment, in particular to an acoustic low-pass filter. Background Art

[0002] The frequency response range of headphones refers to the width of the frequency band that the headphones can broadcast. In addition to being used as a reference for development engineers when designing product data and for production line quality control, the frequency response of headphones can also be adjusted to achieve the style of headphones required by development engineers, such as adjusting the low frequency volume, dive depth, brightness, and distortion of the headphones.

[0003] The dynamic armature in-ear headphones currently on the market use a low-pass filter for adjusting the frequency response, and the current low-pass filter is composed of a dynamic armature speaker, a sound tube and a damper. However, the current damper is installed inside the sound tube, but when the damper inside the sound tube is damaged, it needs to be replaced, and the current damper is small in size, which causes inconvenience in disassembly and replacement.

[0004] Therefore, it is necessary to provide an acoustic low-pass filter to solve the above technical problems. Utility Model Content

[0005] The utility model provides an acoustic low-pass filter, which solves the problem that the existing damper is installed inside the sound tube, but the damper inside the sound tube needs to be replaced when damaged, and the existing damper is small in size and inconvenient to disassemble and replace.

[0006] In order to solve the above technical problems, the utility model provides an acoustic low-pass filter, comprising:

[0007] A moving iron speaker body, one side of which is connected to a first sound tube, one end of which is connected to a mounting assembly, the mounting assembly comprising a mounting shell, and both left and right sides of the mounting shell are connected to mounting tubes;

[0008] A damper body is installed inside the installation shell.

[0009] Preferably, one end of one of the mounting tubes is connected to a second sound tube.

[0010] Preferably, a first sealing ring is provided between the first sound tube, the two mounting tubes and the second sound tube.

[0011] Preferably, a second sealing ring is provided between the mounting shell and the damper body.

[0012] Preferably, a disassembly assembly is provided on the surface of the mounting shell, the disassembly assembly comprises a disassembly shell, both sides of the disassembly shell are connected with positioning sealing blocks, and a positioning sealing groove adapted to the positioning sealing block is opened on the mounting shell.

[0013] Preferably, sealing gaskets are bonded to both left and right sides of the inner wall of the positioning sealing groove.

[0014] An earphone comprises an earphone shell, an earpiece and a moving iron unit, and also comprises an acoustic low-pass filter as described above, wherein the sound-conducting end of the second sound tube is connected to the moving iron unit, the ear-inlet end of the second sound tube is connected to the earpiece, and the moving iron unit is arranged in the earphone shell.

[0015] Compared with the related art, the acoustic low-pass filter provided by the utility model has the following beneficial effects:

[0016] The utility model provides an acoustic low-pass filter. A mounting shell with two mounting tubes is arranged between a first sound tube and a second sound tube, and a damper body can be mounted inside the mounting shell. When the damper body is damaged, the mounting shell and the sound tube can be disassembled to facilitate replacement of the damper body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a first embodiment of an acoustic low-pass filter provided by the utility model;

[0018] Figure 2 for Figure 1 An enlarged schematic diagram of part A is shown;

[0019] Figure 3 for Figure 1 A schematic diagram of the overall three-dimensional structure of the device shown;

[0020] Figure 4 for Figure 3 An enlarged schematic diagram of part B is shown;

[0021] Figure 5 The present invention is a schematic structural diagram of a second embodiment of an acoustic low-pass filter provided by the present invention.

[0022] Numbers in the figure: 1, the main body of the moving iron speaker, 2, the first sound tube,

[0023] 3. Mounting assembly, 31. Mounting shell, 32. Mounting tube, 33. First sealing ring,

[0024] 4. Damper body, 5. Second sealing ring, 6. Second sound tube,

[0025] 7. Disassembly assembly, 71. Disassembly shell, 72. Positioning sealing block, 73. Positioning sealing groove, 74. Sealing gasket. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0027] First embodiment

[0028] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 ,in, Figure 1 A schematic structural diagram of a first embodiment of an acoustic low-pass filter provided by the utility model; Figure 2 for Figure 1 An enlarged schematic diagram of part A is shown; Figure 3 for Figure 1 A schematic diagram of the overall three-dimensional structure of the device shown; Figure 4 for Figure 3 An acoustic low-pass filter, comprising:

[0029] A moving iron speaker body 1, one side of the moving iron speaker body 1 is connected to a first sound tube 2, one end of the first sound tube 2 is connected to a mounting assembly 3, the mounting assembly 3 includes a mounting shell 31, and both left and right sides of the mounting shell 31 are connected to mounting tubes 32;

[0030] The damper body 4 is installed inside the installation shell 31 .

[0031] The mounting shell 31 and the mounting pipe 32 are connected.

[0032] One end of one of the mounting tubes 32 is connected to the second sound tube 6 .

[0033] A first sealing ring 33 is provided between the first sound tube 2 , the two mounting tubes 32 and the second sound tube 6 .

[0034] A second sealing ring 5 is provided between the mounting shell 31 and the damper body 4 .

[0035] The installation tube 32 is connected to the first sound tube 2 and the second sound tube 6 by plugging and unplugging. The first sealing ring 33 can seal the connection. The first sealing ring 33 and the second sealing ring 5 are replaced with sealing glue.

[0036] An earphone comprises an earphone shell, an earpiece and a moving iron unit, and also comprises the acoustic low-pass filter, wherein the sound-conducting end of the second sound tube 6 is connected to the moving iron unit, the ear-inlet end of the second sound tube 6 is connected to the earpiece, and the moving iron unit is arranged in the earphone shell.

[0037] The working principle of an acoustic low-pass filter provided by the utility model is as follows:

[0038] During use, when replacing a damaged damper body 4, first separate the mounting shell 31 with the damper body 4 from the first sound tube 2 and the second sound tube 6, and then install the mounting shell 31 with a new damper body 4 and the first sound tube 2 and the second sound tube 6.

[0039] Compared with the related art, the acoustic low-pass filter provided by the utility model has the following beneficial effects:

[0040] The utility model provides an acoustic low-pass filter. A mounting shell 31 with two mounting tubes 32 is arranged between a first sound tube 2 and a second sound tube 6. A damper body 4 can be mounted inside the mounting shell 31. When the damper body 4 is damaged, the mounting shell 31 and the sound tube can be disassembled to facilitate replacement of the damper body 4.

[0041] Second embodiment

[0042] Please refer to Figure 5 Based on the acoustic low-pass filter provided in the first embodiment of the present application, the second embodiment of the present application provides another acoustic low-pass filter. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0043] Specifically, the difference of the acoustic low-pass filter provided in the second embodiment of the present application is that, in an acoustic low-pass filter, a disassembly component 7 is provided on the surface of the mounting shell 31, and the disassembly component 7 includes a disassembly shell 71, and positioning sealing blocks 72 are connected to both sides of the disassembly shell 71, and a positioning sealing groove 73 adapted to the positioning sealing block 72 is opened on the mounting shell 31.

[0044] Sealing pads 74 are bonded to both left and right sides of the inner wall of the positioning sealing groove 73 .

[0045] The shape of the mounting shell 31 is semicircular, and the disassembly shell 71 and the mounting shell 31 are spliced ​​into a complete cylindrical shape. The shapes of the positioning sealing block 72 and the positioning sealing groove 73 are adapted to the shape of the mounting shell 31, and the use of the sealing gasket 74 can achieve the sealing effect.

[0046] The working principle of an acoustic low-pass filter provided by the utility model is as follows:

[0047] During use, when the damper body 4 inside the mounting shell 31 is to be disassembled, the damper body 4 inside the mounting shell 31 can be disassembled by pulling the disassembly shell 71 upward to drive the positioning sealing block 72 to separate from the positioning sealing groove 73 provided on the mounting shell 31 .

[0048] Compared with the related art, the acoustic low-pass filter provided by the utility model has the following beneficial effects:

[0049] The utility model provides an acoustic low-pass filter. A disassembly shell 71 with a positioning sealing block 72 and a positioning sealing groove 73 with a sealing gasket 74 are arranged above the installation shell 31 to facilitate operators to disassemble the damper body 4 inside the installation shell 31.

[0050] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An acoustic low-pass filter, characterized in that: include: A moving iron speaker body, one side of which is connected to a first sound tube, one end of which is connected to a mounting assembly, the mounting assembly comprising a mounting shell, and both left and right sides of the mounting shell are connected to mounting tubes; A damper body is installed inside the installation shell.

2. The acoustic low-pass filter according to claim 1, characterized in that One end of one of the mounting tubes is connected to a second sound tube.

3. The acoustic low-pass filter according to claim 2, characterized in that A first sealing ring is arranged between the first sound tube, the two mounting tubes and the second sound tube.

4. The acoustic low-pass filter according to claim 1, characterized in that A second sealing ring is arranged between the mounting shell and the damper body.

5. The acoustic low-pass filter according to claim 1, characterized in that A disassembly assembly is arranged on the surface of the installation shell, and the disassembly assembly comprises a disassembly shell, both sides of the disassembly shell are connected with positioning sealing blocks, and a positioning sealing groove matched with the positioning sealing block is opened on the installation shell.

6. The acoustic low-pass filter according to claim 5, characterized in that Sealing pads are bonded to both left and right sides of the inner wall of the positioning sealing groove.

7. An earphone, comprising an earphone housing, an earpiece and a moving iron unit, characterized in that: It also includes the acoustic low-pass filter as described in any one of claims 1-4, the sound-conducting end of the second sound tube is connected to the moving iron unit, the ear-inlet end of the second sound tube is connected to the ear mouth, and the moving iron unit is arranged in the earphone shell.

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