TWI420505B - Sound insulating device - Google Patents

Description

Audio test isolation box

The invention relates to an audio test isolation box, in particular to an audio test isolation box applied in a portable electronic device.

With the continuous updating and development of technology, portable electronic devices such as mobile phones or personal digital assitants (PDAs) have been widely used in people's daily lives. In order to make the portable electronic device have a good use effect, it is generally required to perform various tests on the portable electronic device, and the audio test is one of the important ones.

At present, the audio test is usually carried out by means of a program test. A test software is installed in the computer, and then the test board electrical signal is connected to the computer to start the test software. The test board will be portable under the guidance of the relevant program instructions. The audio quality of the electronic device is tested, and the test result is transmitted back to the computer for analysis and processing, thereby obtaining the test result of the audio quality of the portable electronic device.

However, the audio test is usually carried out in the production workshop. Therefore, the audio test is inevitably interfered by the external sound source. As a result, the test result of the audio quality of the portable electronic device will cause a large error.

In view of this, it is necessary to provide an audio test isolation box that can improve the quality of audio testing.

An audio test isolating box for testing the audio quality of a portable electronic device, comprising an artificial mouth, an artificial ear, a soundproofing room and a mounting platform, wherein the mounting platform mounts the portable electronic device The artificial mouth, the artificial ear and the mounting platform are located in the soundproofing room, and the soundproofing room is surrounded by a plurality of sound insulating plates, which comprise a sound absorbing layer, a styrofoam layer and an aluminum alloy layer. The styrofoam layer is located between the sound absorbing layer and the aluminum alloy layer.

Compared with the prior art, the soundproofing room formed by the soundproof board of the audio test isolating box creates a relatively quiet audio test environment, avoids the interference of external sound sources, and improves the quality of the audio test.

10‧‧‧Audio Test Isolation Box

11‧‧‧Chassis

111‧‧‧ side panels

112‧‧‧Workbench

12‧‧‧ artificial mouth

13‧‧‧ artificial ear

14‧‧‧Sound room

141‧‧ ‧ acoustic board

1411‧‧‧ Sound absorbing layer

1412‧‧‧Pauli layer

1413‧‧‧Aluminum alloy layer

142‧‧ ‧ soundproof door

143‧‧‧ openings

15‧‧‧Installation platform

151‧‧‧ tablet

152‧‧‧ fixed seat

1521‧‧‧ Cavity

16‧‧‧Manual mouth adjustment device

161‧‧‧ Slider

162‧‧‧ adjusting nut

163‧‧‧"U" shrapnel

1631‧‧‧ bottom

1632‧‧‧ Arms

1633‧‧‧ round hole

1634‧‧‧through hole

164‧‧‧ Connecting rod

165‧‧‧ screw

1651‧‧‧Connecting head

1652‧‧‧Thread

1653‧‧‧Connection hole

17‧‧‧ artificial ear adjustment device

171‧‧‧ tablet

1711‧‧‧Chute

172‧‧‧ fixed plate

173‧‧‧First cylinder

1731‧‧‧First gas pole

1732‧‧‧First air chamber

174‧‧‧ bolt

18‧‧‧ platform adjustment device

181‧‧‧second cylinder

1811‧‧‧second gas rod

1812‧‧‧Second chamber

182‧‧‧Sliding mechanism

1821‧‧‧rail

1822‧‧ ‧ guide slot

1 is a perspective exploded view of a preferred embodiment of the audio test isolating box of the present invention; FIG. 2 is a perspective exploded view of the baffle plate shown in FIG. 1; FIG. 3 is a perspective exploded view of the artificial mouth adjusting device shown in FIG. 4 is a partial assembled view of the audio test isolating box shown in FIG. 1; FIG. 5 is a three-dimensional assembled view of the audio test isolating box shown in FIG. 1; FIG. 6 is a state of use of the audio test isolating box shown in FIG. Figure.

The invention discloses an audio test isolation box, which is suitable for testing portable electronic devices such as mobile phones or personal digital assitants (PDAs). The audio quality of the device. In the embodiment, a test mobile phone is taken as an example for illustration.

Referring to FIG. 1 , the audio test isolation box 10 includes a chassis 11 , a power generating device (not shown), an artificial mouth 12 , an artificial ear 13 , a soundproof room 14 , a mounting platform 15 , and an artificial mouth . The adjustment device 16, an artificial ear adjustment device 17, and a platform adjustment device 18. The power generating device is mounted in the casing 11. The artificial mouth 12, the artificial ear 13, the soundproof chamber 14, the mounting platform 15, the artificial mouth adjusting device 16, the artificial ear adjusting device 17, and the platform adjusting device 18 are mounted on the casing 11.

The chassis 11 is a square box including a plurality of side plates 111 and a table 112 adjacent to the side plates 111.

The power generating device is mounted in the casing 11. The power generating device may be an air motor, a hydraulic motor, a stepping motor, or the like. In this embodiment, the power generating device is an air motor.

The artificial mouth 12 is an audio source that is analogous to the sound of a human mouth and is suitable for acoustic testing of a microphone of a portable electronic device.

The artificial ear 13 is an acceptor for receiving an audio source than the human ear, and is suitable for acoustic testing of a speaker of a portable electronic device.

Referring to FIG. 2, the soundproof chamber 14 is substantially a square chamber, and includes five soundproof plates 141 and a soundproof door 142. The soundproof chamber 14 is mounted on the table 112 by the five baffles 141 to define a cavity. Each of the baffle 141 and the soundproof door 142 includes a sound absorbing layer 1411, a styrofoam layer 1412 and an aluminum alloy layer 1413. The styrofoam layer 1412 is located between the sound absorbing layer 1411 and the aluminum alloy layer 1413. The styrofoam layer 1412 The sound absorbing layer 1411 is bonded to the aluminum alloy layer 1413. The sound absorbing layer 1411 has a thickness of 15 to 25 mm. The thickness of the styrofoam layer 1412 is 5 to 15 mm. The aluminum alloy layer 1413 has a thickness of 15 to 25 mm. The sound absorbing layer 1411 is made of foam and has a zigzag cross section. The styrofoam layer 1412 is a material formed by high temperature foaming of polystyrene. A rectangular opening 143 is defined in one of the sound insulating plates 141. The opening 143 is opposite to the mounting platform 15 so that the mounting platform 15 can pass through the opening 143 to be exposed outside the soundproof chamber 14. The shape and size of the soundproof door 142 is substantially equivalent to the shape and size of the opening 143 for closing the opening 143. The soundproof door 142 is fixedly integrated with the mounting platform 15 .

The mounting platform 15 includes a flat plate 151 and a fixing base 152. The fixing base 152 is substantially a rectangular frame body having a cavity 1521 for receiving and accommodating the mobile phone to be tested. The fixing seat 152 is screwed to the flat plate 151.

Referring to FIG. 3 , the manual nozzle adjusting device 16 includes a sliding rod 161 , an adjusting nut 162 , a “U”-shaped elastic piece 163 , a connecting rod 164 and a screw 165 . The slider 161 is a linear rod body, and one end of the slider 161 is fixed to the table 112. The adjusting nut 162 has a rhombus shape and a threaded hole (not shown) is formed at one end thereof. One end of the screw 165 is a joint 1651, and the other end is provided with a thread 1652. The connecting head 1651 opens through a connecting hole 1653. The "U"-shaped elastic piece 163 includes a bottom portion 1631 and two arm portions 1632. The "U"-shaped elastic piece 163 is provided with a circular hole 1633 adjacent to the bottom portion 1631. The circular hole 1633 is sleeved on the sliding rod 161. A through hole 1634 is defined in one end of the two-arm portion 1632 away from the bottom portion 1631, so that the screw 165 is screwed into the threaded hole of the nut 162 through the through hole 1634 to change the diameter of the circular hole 1633, thereby A "U" type elastic piece 163 is fixed to the slide bar 161. One end of the connecting rod 164 is fixed to the artificial mouth 12, The other end is slidably inserted into the connecting hole 1653.

The artificial ear adjusting device 17 includes a flat plate 171, two fixing plates 172 and a first cylinder 173. Two sliding grooves 1711 disposed in parallel are formed on the flat plate 171. The first cylinder 173 includes a first gas rod 1731 and a first gas chamber 1732. The first air rod 1731 is telescopically received in the first air chamber 1732. The first air chamber 1732 is slidably fixed to the flat plate 171 along the sliding slot 1711 by two bolts 174. The first air rod 1731 is fixed to the artificial ear 13 .

The platform adjustment device 18 includes a second cylinder 181 and a sliding mechanism 182. The second cylinder 181 includes a second gas rod 1811 and a second gas chamber 1812. The second air rod 1811 is telescopically received in the second air chamber 1812. The second air chamber 1812 is fixed to the work table 112, and the second air rod 1811 is fixed to the mounting platform 15. The sliding mechanism 182 includes two parallel guide rails 1821 and two guiding grooves 1822 formed at the bottom of the mounting platform 15. The guide rail 1821 is slidably embedded in the guide groove 1822. The two rails 1821 are opposite to the opening 143.

Referring to FIG. 5 and FIG. 6 , when the isolation box 10 is tested using the audio, the isolation door 142 is first opened to pull the mounting platform 15 out of the isolation chamber 14 , and then the mobile phone to be tested is mounted on the fixed seat 152 . Then, the first cylinder 173 and the second cylinder 181 are connected to the power generating device, and the artificial nozzle 12 and the artificial ear 13 are connected to a test circuit board (not shown), and the test circuit board is The computer (not shown) is connected with a signal, and the audio test software is installed in the computer to start the audio test software. The audio test isolation box 10 is automatically adjusted by the manual mouth adjustment device 16 and the artificial ear adjustment device 17 under the control of the program command. The position of the artificial mouth 12 and the artificial ear 13 is such that the artificial mouth 12 and the artificial ear 13 are aligned with the microphone and the speaker of the mobile phone to be tested, and The audio quality of the portable electronic device is tested in a quiet environment created by the soundproof room 14.

It can be understood that the chassis 11 can also be omitted, so that the soundproof chamber 14 needs to be closed by six soundproof plates 141, and the power generating device is stored independently of the audio test isolating box 10.

It can be understood that the soundproof chamber 14 can also be a chamber of other shapes, such as a conical shape, and only needs to be enclosed by a baffle or a soundproof door to form a closed chamber.

The soundproofing chamber 14 formed by the soundproofing board 141 and the soundproofing door 142 of the audio test isolating box 10 creates a relatively quiet audio test environment, avoids interference from external sound sources, and improves the quality of the audio test. In addition, the artificial mouth adjusting device 16, the artificial ear adjusting device and the platform adjusting device make the artificial mouth 12 and the artificial ear 13 and the microphone and the speaker of the mobile phone to be tested more conveniently aligned, thereby improving the efficiency of the audio test.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and equivalent modifications or variations made by those skilled in the art in light of the spirit of the present invention are It should be covered by the following patent application.

10‧‧‧Audio Test Isolation Box

11‧‧‧Chassis

111‧‧‧ side panels

112‧‧‧Workbench

12‧‧‧ artificial mouth

13‧‧‧ artificial ear

14‧‧‧Sound room

141‧‧ ‧ acoustic board

142‧‧ ‧ soundproof door

143‧‧‧ openings

15‧‧‧Installation platform

151‧‧‧ tablet

152‧‧‧ fixed seat

1521‧‧‧ Cavity

161‧‧‧ Slider

162‧‧‧ adjusting nut

163‧‧‧"U" shrapnel

165‧‧‧ screw

17‧‧‧ artificial ear adjustment device

171‧‧‧ tablet

1711‧‧‧Chute

172‧‧‧ fixed board

173‧‧‧First cylinder

1731‧‧‧First gas pole

1732‧‧‧First air chamber

174‧‧‧ bolt

18‧‧‧ platform adjustment device

181‧‧‧second cylinder

1811‧‧‧second gas rod

1812‧‧‧Second chamber

182‧‧‧Sliding mechanism

1821‧‧‧rail

1822‧‧ ‧ guide slot

Claims (10)

An audio test isolating box for testing the audio quality of a portable electronic device, comprising an artificial mouth, an artificial ear and a mounting platform, the mounting platform mounting the portable electronic device thereon, the improvement thereof The audio test isolating box further includes a soundproofing chamber, the artificial mouth, the artificial ear and the mounting platform are located in the soundproofing room, the soundproofing room is surrounded by a plurality of soundproofing plates, and the soundproofing plate comprises a sound absorbing layer integrally fixed a styrofoam layer and an aluminum alloy layer, the styrofoam layer being located between the sound absorbing layer and the aluminum alloy layer. The audio test isolators of claim 1, wherein the styrofoam layer, the sound absorbing layer and the aluminum alloy layer are bonded together. The audio test isolating device of claim 1, wherein the sound absorbing layer has a thickness of 15 to 25 mm, the styrofoam layer has a thickness of 5 to 15 mm, and the aluminum alloy layer has a thickness of 15 ~25 mm. The audio test isolating device of claim 1, wherein the audio test isolating box further comprises an artificial mouth adjusting device for adjusting a spatial position of the artificial mouth. The audio test isolating device of claim 4, wherein the artificial mouth adjusting device comprises a sliding bar and a connecting rod, the connecting rod is fixed at one end to the artificial mouth, and the other end is slidably fixed to the The slider. The audio test isolating device of claim 1, wherein the audio test isolating box further comprises an artificial ear adjusting device for adjusting a spatial position of the artificial ear. The audio test isolating device of claim 6, wherein the artificial ear adjusting device comprises a flat plate and a cylinder, the cylinder comprising a gas rod and a gas chamber, the gas rod is telescopically received in the air chamber The air chamber is slidably fixed to the flat plate, and the air rod is fixed to the artificial ear. The audio test isolating device of claim 1, wherein the audio test isolating box further comprises a platform adjusting device for adjusting a spatial position of the mounting platform. The audio test isolating device of claim 8, wherein the platform adjusting device comprises a cylinder and a sliding mechanism, the cylinder comprising a gas rod and a gas chamber, the gas rod is telescopically received in the air chamber The airing rod is fixed on the mounting platform, and the sliding mechanism comprises two parallel guiding rails and two guiding slots formed at the bottom of the mounting platform, and the guiding rail is slidably embedded in the guiding slot. The audio test isolating device of claim 8, wherein the soundproofing plate defines an opening, the soundproofing room further comprises a soundproofing door, the soundproofing door sealing the opening, the two guiding rails are opposite to the opening, the soundproofing The door is fixed to the mounting platform.