CN109672969B - Microphone testing device - Google Patents
Microphone testing device Download PDFInfo
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- CN109672969B CN109672969B CN201710961838.0A CN201710961838A CN109672969B CN 109672969 B CN109672969 B CN 109672969B CN 201710961838 A CN201710961838 A CN 201710961838A CN 109672969 B CN109672969 B CN 109672969B
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- testing device
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- 238000012360 testing method Methods 0.000 title claims abstract description 127
- 238000002955 isolation Methods 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims description 30
- 125000006850 spacer group Chemical group 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000009413 insulation Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 238000000926 separation method Methods 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2420/00—Details of connection covered by H04R, not provided for in its groups
- H04R2420/05—Detection of connection of loudspeakers or headphones to amplifiers
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
A microphone testing device comprises a base, an upper cover, a fixed seat, a floating joint, a moving device, a guide pillar, a machine table, an upper isolation pad, a pressing plate isolation pad, a sound insulation door and a wire. The microphone testing device can effectively prevent low-frequency noise from being transmitted to the upper cover and the base to enter a testing cavity, avoid noise and resonance interference testing and improve the testing accuracy of a microphone to be tested.
Description
Technical Field
The present invention relates to a testing machine, and more particularly, to a microphone testing device for preventing low frequency noise from entering a testing chamber.
Background
A Micro electro Mechanical System (MEMS Microphone) is a Microphone made by using Micro electro Mechanical System (Micro electro Mechanical System) technology, which may also be called a Microphone chip (Microphone chip) or a silicon Microphone (silicon Microphone), and is mainly applied to small mobile electronic products such as mobile phones, tablet computers, notebook computers, hearing aids, and the like.
In order to detect the audio characteristics of such a microphone, the microphone to be tested is placed in a microphone testing device so that the microphone to be tested is isolated from the external sound source and is kept in an environment free of low-frequency noise to simulate a free sound field.
However, in practice, the existing microphone testing device is apt to transmit low frequency noise to the testing chamber through several points:
firstly, a joint arranged at one end of the mobile device directly contacts the upper cover, so that low-frequency noise is transmitted to the upper cover through the mobile device and the joint and enters the test chamber.
And secondly, the bottom of the base directly contacts the top of the machine table, so that low-frequency noise is transmitted to the base through the machine table and enters the test chamber.
And thirdly, the wire hole of the base and the wire hole of the soundproof door extend on the same straight line, and low-frequency noise easily enters the test chamber from the straight line of the wire hole of the soundproof door through the wire hole of the base.
And fourthly, the wire cannot be completely fixed by the soundproof door, so that low-frequency noise is transmitted to the test chamber through the wire.
The microphone to be tested placed in the testing chamber will affect the testing accuracy of the microphone to be tested under the interference of low frequency noise, noise and resonance, so the existing microphone testing device is really necessary to be further improved.
Disclosure of Invention
The invention mainly aims to provide a microphone testing device which can effectively prevent low-frequency noise from entering a testing chamber after being transmitted to an upper cover and a base through a moving device, a floating joint, a machine table, a pressing plate, a wire hole of the base, a wire hole of a soundproof door, a wire and other members, so that noise and resonance interference testing is avoided, and the testing accuracy of a microphone to be tested is improved.
Another objective of the present invention is to provide a microphone testing device, in which the floating joint can move vertically and smoothly without shaking, so as to avoid contacting the fixing seat due to shaking when the floating joint is out of position, prevent low frequency noise from being transmitted to the upper cover through the fixing seat and entering the testing chamber, avoid noise and resonance interference during testing, and improve the testing accuracy of the microphone to be tested.
In order to achieve the above objective, the present invention provides a microphone testing device, which includes a base, an upper cover, a fixing base, a floating joint and a moving device. The upper cover is arranged on the top of the base and encloses a test chamber together with the base. The fixed seat is provided with a top wall and a side wall, the top wall is provided with an opening, the side wall is arranged between the top wall and the top of the upper cover, the top wall, the side wall and the top of the upper cover of the fixed seat together enclose a containing chamber, and the containing chamber is communicated with the opening; the floating joint is provided with a first end part and a second end part, the first end part of the floating joint is arranged in the accommodating chamber, the outer diameter of the first end part of the floating joint is larger than the inner diameter of the opening of the top wall of the fixed seat, and the second end part of the floating joint penetrates through the opening of the top wall of the fixed seat. The mobile device is arranged at the second end part of the floating joint and drives the floating joint to vertically move between a contact position and a separation position, when the floating joint is positioned at the contact position, the top surface of the first end part of the floating joint is contacted with the top wall of the fixed seat, so that the mobile device can move the upper cover to be close to or far away from the base through the floating joint and the fixed seat, when the upper cover moves to the top of the base, the mobile device further drives the floating joint to downwards move to the separation position, so that the top surface of the first end part of the floating joint is separated from the top wall of the fixed seat and keeps a distance with the top wall of the fixed seat, and meanwhile keeps a distance with the.
Preferably, one of the top wall of the fixed base and the first end of the floating joint is provided with a guiding hole, and the microphone testing device further comprises a guiding post, which is disposed on the other of the top wall of the fixed base and the first end of the floating joint and can move in the guiding hole.
Preferably, the top wall of the fixed seat is provided with two guiding holes, the two guiding holes are located at two opposite sides of the opening, the first end of the floating joint is provided with two through holes penetrating through the top and bottom surfaces of the floating joint, and the microphone testing device comprises two guide posts, and the two guide posts are respectively inserted into the two through holes of the first end of the floating joint and can move in the two guiding holes of the top wall of the fixed seat.
Preferably, the opening of the top wall of the fixed seat has an inner ring plane and an inner ring inclined plane, the inner ring inclined plane is located between the inner ring plane and the bottom surface of the top wall of the fixed seat, the two guide holes respectively penetrate through the top surface and the bottom surface of the top wall of the fixed seat, the top surface of the first end portion of the floating joint has an upper ring plane, an outer ring inclined plane and a lower ring plane, the outer ring inclined plane of the first end portion of the floating joint is located between the upper ring plane and the lower ring plane, and the two through holes penetrate through the lower ring plane of the first end portion of the floating joint; when the floating joint is located at the separation position, the outer ring inclined plane of the top surface of the first end part of the floating joint is far away from the inner ring inclined plane of the opening of the top wall of the fixed seat, and the lower ring plane of the top surface of the first end part of the floating joint is far away from the bottom surface of the top wall of the fixed seat.
Preferably, the microphone testing device further includes a machine table and a plurality of upper isolation pads, and the plurality of upper isolation pads are disposed between the bottom surface of the base and the top surface of the machine table.
Preferably, the base has four outer side surfaces, two of the outer side surfaces of the base opposite to each other extend outward to form two platforms at the bottom edge, and the upper isolation pads are arranged between the bottom surfaces of the two platforms of the base and the top surface of the machine table.
Preferably, the microphone testing device further comprises a plurality of pressing plates and a plurality of pressing plate isolation pads, each pressing plate is provided with a longitudinal plate and a transverse plate, the longitudinal plates of the plurality of pressing plates are arranged on the top surface of the machine platform, the transverse plates of the plurality of pressing plates respectively transversely extend to the upper portions of the two platforms of the base from the inner sides of the longitudinal plates of the plurality of pressing plates, and the plurality of pressing plate isolation pads are arranged between the bottom surfaces of the transverse plates of the plurality of pressing plates and the top surfaces of the two platforms of the base.
Preferably, one side of the base is provided with a wire hole, the wire hole is communicated with the testing chamber, the microphone testing device further comprises a soundproof door and a wire rod, the soundproof door is arranged on one side of the base and is provided with the wire hole, the wire hole of the base and the wire hole of the soundproof door extend on line all the time, and the wire rod is bent firstly after passing through the wire hole of the soundproof door and then enters the testing chamber after passing through the wire hole of the base.
Preferably, one side of the base is provided with a through hole and two sealing plates, the two sealing plates of the base are arranged in the through hole of the base and are respectively provided with a notch at the adjacent side in a concave manner, the two notches of the two sealing plates of the base are combined to form a wire hole of the base, and the diameter of the wire hole of the base is equal to the outer diameter of the wire rod, so that the wire rod is tightly clamped by the two sealing plates of the base.
Preferably, the soundproof door is provided with a through hole at one side far away from the base and two sealing plates, the two sealing plates of the soundproof door are arranged in the through hole of the soundproof door and are respectively provided with a notch at the adjacent side, the two notches of the two sealing plates of the soundproof door are combined to form a wire hole of the soundproof door, and the diameter of the wire hole of the soundproof door is equal to the outer diameter of the wire rod, so that the wire rod is tightly clamped by the two sealing plates of the soundproof door.
The invention has the advantages that the mobile device of the microphone testing device can move the upper cover to be close to or far from the base through the floating joint and the fixed seat, when the upper cover moves to the top of the base, the mobile device further drives the floating joint to move downwards to the separation position, the top surface of the first end part of the floating joint is separated from the top wall of the fixed seat and keeps a distance with the top wall of the fixed seat, meanwhile, the top part of the floating joint keeps a distance with the top of the upper cover, low-frequency noise is prevented from being transmitted to the upper cover through the fixed seat and entering a testing chamber, noise and resonance interference testing is avoided, and the testing accuracy of the microphone to be tested is improved.
The invention has another effect that the floating joint moves downwards to the state of the separation position, and the low-frequency noise can be effectively prevented from being transmitted to the upper cover and the base to enter the testing chamber through the moving device, the floating joint, the machine table, the pressing plate, the wire hole of the base, the wire hole of the soundproof door, the wire rod and other components by matching the upper isolation pad and the pressing plate isolation pad, the wire hole of the base and the wire hole of the soundproof door which are not in the same straight line, and the two sealing plates of the base and the soundproof door under the state of downward moving to the separation position, so that the noise and resonance interference test is avoided, and the testing accuracy of the microphone to be tested is. In addition, the floating joint can move in the guide hole through the guide pillar and move steadily and vertically, can not rock, avoids contacting the fixing base when breaking away from the position because of rocking, prevents that low frequency noise from transmitting for the upper cover and getting into the test cavity via the fixing base, avoids noise and resonance interference test, promotes the test accuracy of the microphone that awaits measuring.
Drawings
Fig. 1 is a perspective view of a microphone testing device of the present invention.
Fig. 2 is a perspective view of another perspective view of the microphone testing device of the present invention.
Fig. 3 is a front view of the microphone testing device of the present invention.
Fig. 4 is an exploded view of the upper cover, the fixing base, the floating joint and the moving device of the microphone testing device of the present invention.
Fig. 5 is an exploded view of the upper cover, the fixing base, the floating joint and the mobile device of the microphone testing device according to another view angle.
Fig. 6 is a cross-sectional view of a microphone testing device of the present invention.
Fig. 7 is a cross-sectional view of the floating joint of the microphone testing device of the present invention moved downward to a disengaged position.
Fig. 8 is an exploded view of the base of the microphone testing device of the present invention.
Fig. 9 is an exploded view of another perspective of the base of the microphone testing device of the present invention.
Fig. 10 is a cross-sectional view showing the staggered arrangement of the line holes of the base and the line holes of the soundproof door of the microphone testing device of the present invention.
Wherein the reference numerals are as follows:
10 base 413 outer ring slope
11 lower chamber 414 lower ring plane
12 second end of platform 42
13 line hole 50 moving device
14 through hole 60 guide post
15 sealing plate 70 machine
20 upper cover 71 support leg
21 upper chamber 80 upper isolation pad
22 screw hole 90 pressure plate
30 vertical plate of fixing seat 91
31 top wall 92 horizontal plate
311 opening 100 platen spacer
3111 lower spacer of inner ring plane 200
3112 Sound-proof door with inclined plane 300 of inner ring
312 hole 301 line hole
313 pilot hole 302 hollow chamber
32 sidewall 303 via
40 floating joint 304 seal plate
41 first end 400 wire
411 perforated a test chamber
412 ring plane B chamber
Detailed Description
The embodiments of the present invention will be described in more detail with reference to the drawings and the reference numerals so that those skilled in the art can read the description to implement the embodiments.
Referring to fig. 1 to 6, fig. 1 is a perspective view of a microphone testing device of the present invention, fig. 2 is a perspective view of another viewing angle of the microphone testing device of the present invention, fig. 3 is a front view of the microphone testing device of the present invention, fig. 4 is an exploded view of an upper cover, a fixing base, a floating joint and a moving device of the microphone testing device of the present invention, fig. 5 is an exploded view of another viewing angle of the upper cover, the fixing base, the floating joint and the moving device of the microphone testing device of the present invention, and fig. 6 is a cross-sectional view of the microphone testing device of the present invention. The invention provides a microphone testing device, which comprises a base 10, an upper cover 20, a fixed seat 30, a floating joint 40 and a moving device 50.
The upper cover 20 is disposed on the top of the base 10 and encloses a testing chamber a together with the base 10. More specifically, the top cover 20 defines an upper chamber 21 extending through the bottom thereof, the base 10 defines a lower chamber 11 extending through the top thereof, and the upper chamber 21 of the top cover 20 and the lower chamber 11 of the base 10 together define the testing chamber a, as shown in fig. 1, 2 and 6. The testing chamber a is used for placing a microphone (not shown) to be tested therein, and testing the audio characteristics of the microphone to be tested through a testing device (not shown) in a conventional structure. The Microphone to be tested is a Micro-electro-Mechanical Microphone (MEMS Microphone), which is a Microphone manufactured by using Micro-electro-Mechanical-System (Micro-electro-Mechanical-System) technology, and may also be referred to as a Microphone chip (Microphone chip) or a silicon Microphone (silicon Microphone), and is mainly applied to small mobile electronic products such as mobile phones, tablet computers, notebook computers, hearing aids, and the like.
The fixing base 30 has a top wall 31 and a side wall 32, the top wall 31 is opened with an opening 311, the side wall 32 is disposed between the top wall 31 and the top of the upper cover 20, the top wall 31, the side wall 32 and the top of the upper cover 20 of the fixing base 30 together enclose a chamber B, and the chamber B is communicated with the opening 311, as shown in fig. 4 to 6. More specifically, the top wall 31 of the fixing base 30 is opened with a plurality of holes 312, and a plurality of screws (not shown) are threaded through the plurality of holes 312 and then threaded into the plurality of screw holes 22 at the top of the upper cover 20, thereby fixing the fixing base 30 to the upper cover 20.
The floating joint 40 has a first end 41 and a second end 42, the first end 41 of the floating joint 40 is disposed in the accommodating chamber B and has an outer diameter larger than an inner diameter of the opening 311 of the top wall 31 of the fixing seat 30, and the second end 42 of the floating joint 40 passes through the opening 311 of the top wall 31 of the fixing seat 30, as shown in fig. 6. More specifically, the outer diameter of the first end portion 41 of the floating joint 40 is larger than the outer diameter of the second end portion 42 of the floating joint 40, and the outer diameter of the second end portion 42 of the floating joint 40 is smaller than the inner diameter of the opening 311 of the top wall 31 of the fixed seat 30, so that the second end portion 42 of the floating joint 40 passes through the opening 311 of the top wall 31 of the fixed seat 30.
The moving device 50 is disposed at the second end 42 of the floating joint 40 and drives the floating joint 40 to move vertically between a contact position and a disengaged position. More specifically, the moving device 50 is suspended above the base 10 and electrically connected to a control device (not shown) for controlling the driving of the floating joint 40 to move vertically and horizontally.
When the floating joint 40 is located at the contact position, the top surface of the first end 41 of the floating joint 40 contacts the top wall 31 of the fixed seat 30, so that the moving device 50 can move the upper cover 20 closer to or away from the base 10 through the floating joint 40 and the fixed seat 30, as shown in fig. 6.
When the upper cover 20 is moved to the top of the base 10, the moving device 50 further drives the floating joint 40 to move downward to the disengaged position, so that the top surface of the first end 41 of the floating joint 40 is disengaged from the top wall 31 of the fixed seat 30 and is kept at a distance from the top wall 31 of the fixed seat 30, and is kept at a distance from the top of the upper cover 20, as shown in fig. 7. In other words, the first end 41 of the floating joint 40 does not contact the top of the fixed base 30 and the upper cover 20. From this, low frequency noise passes through mobile device 50 and floating joint 40 after, can't transmit fixing base 30 and upper cover 20 for, prevents that low frequency noise from getting into test chamber A through fixing base 30 and upper cover 20, avoids noise and resonance interference test, promotes the test accuracy of the microphone that awaits measuring.
Preferably, one of the top wall 31 of the fixed seat 30 and the first end 41 of the floating joint 40 is provided with a guiding hole 313; the microphone testing device of the present invention further includes a guide post 60, the guide post 60 is disposed on the other one of the top wall 31 of the fixed base 30 and the first end 41 of the floating joint 40 and is movable in the guide hole 313, so that the floating joint 40 can move vertically and smoothly without the possibility of shaking, and the floating joint 40 is prevented from laterally touching the top wall 31 of the fixed base 30 due to shaking when being out of position, thereby preventing low frequency noise from being transmitted to the upper cover 20 through the fixed base 30 and entering the testing chamber a, preventing noise and resonance from interfering with the testing, and improving the testing accuracy of the microphone to be tested.
In a preferred embodiment, the top wall 31 of the fixing base 30 is provided with two guiding holes 313, and the two guiding holes 313 are located at two opposite sides of the opening 311; the first end 41 of the floating joint 40 is provided with two through holes 411 which penetrate through the top and bottom surfaces of the floating joint; the microphone testing device of the present invention includes two guide posts 60, two of the guide posts 60 are respectively inserted into the two through holes 411 of the first end portion 41 of the floating joint 40 and are movable in the two guide holes 313 of the top wall 31 of the fixed base 30, thereby enabling the floating joint 40 to be vertically moved in a more stable state, as shown in fig. 4 to 7. Specifically, the opening 311 of the top wall 31 of the fixing base 30 has an inner ring plane 3111 and an inner ring inclined plane 3112, the inner ring inclined plane 3112 is located between the inner ring plane 3111 and the bottom surface of the top wall 31 of the fixing base 30, and the two guiding holes 313 respectively penetrate through the top surface and the bottom surface of the top wall 31 of the fixing base 30; the top surface of the first end portion 41 of the floating joint 40 has an upper ring plane 412, an outer ring slope 413 and a lower ring plane 414, and two of the through holes 411 penetrate through the lower ring plane 414 of the first end portion 41 of the floating joint 40. When the floating joint 40 is located at the contact position, the outer ring inclined surface 413 of the top surface of the first end portion 41 of the floating joint 40 contacts the inner ring inclined surface 3112 of the opening of the top wall of the fixed seat 30, and the lower ring flat surface 414 of the top surface of the first end portion 41 of the floating joint 40 contacts the bottom surface of the top wall 31 of the fixed seat 30, as shown in fig. 6, so that the moving device 50 can move the upper cover 20 closer to or away from the base 10 through the floating joint 40 and the fixed seat 30. When the floating joint 40 is located at the disengaged position, the outer annular inclined surface 413 of the top surface of the first end portion 41 of the floating joint 40 is away from the inner annular inclined surface 3112 of the opening 311 of the top wall 31 of the fixed seat 30, and the lower annular flat surface 414 of the top surface of the first end portion 41 of the floating joint 40 is away from the bottom surface of the top wall 31 of the fixed seat 30, as shown in fig. 7.
Referring to fig. 3, 8 and 9, fig. 3 is a front view of a microphone testing device according to the present invention, fig. 8 is an exploded view of a base of the microphone testing device according to the present invention, and fig. 9 is an exploded view of another perspective of the base of the microphone testing device according to the present invention. The testing apparatus for microphone of the present invention further comprises a machine table 70 and a plurality of upper isolation pads 80. A plurality of upper isolation pads 80 are disposed between the bottom surface of the base 10 and the top surface of the machine table 70. Specifically, the base 10 has four outer side surfaces, two of the outer side surfaces of the base 10 opposite to each other have bottom edges extending outward to form two platforms 12, and the upper isolation pads 80 are disposed between the bottom surfaces of the two platforms 12 of the base 10 and the top surface of the machine table 70. Therefore, low-frequency noise or any vibration wave is absorbed by the upper isolation pads 80 after passing through the machine table 70, so that the effect that the low-frequency noise is transmitted to the base 10 through the machine table 70 and enters the testing chamber A is reduced, noise and resonance interference testing is avoided, and the testing accuracy of the microphone to be tested is improved.
In a preferred embodiment, the microphone testing device of the present invention further comprises a plurality of pressing plates 90 and a plurality of pressing plate isolation pads 100, as shown in fig. 3, 8 and 9. Each of the pressing plates 90 has a vertical plate 91 and a horizontal plate 92, the vertical plates 91 of the pressing plates 90 are disposed on the top surface of the machine table 70, and the horizontal plates 92 of the pressing plates 90 extend from the inner sides of the vertical plates 91 of the pressing plates 90 to above the platform 12 of the base 10. The plurality of pressing plate spacers 100 are disposed between the bottom surface of the horizontal plate 92 of the plurality of pressing plates 90 and the top surface of the platform 12 of the base 10. Therefore, the pressing plates 90 can assist the base 10 to be positioned on the machine table 70, and low-frequency noise or any vibration wave is transmitted from the machine table 70 to the pressing plates 90 and then absorbed by the pressing plate isolation pads 100, so that the effect that the low-frequency noise is transmitted to the base 10 through the pressing plates 90 and enters the testing chamber A is reduced, noise and resonance interference testing is avoided, and the testing accuracy of the microphone to be tested is improved.
In a preferred embodiment, the microphone testing device of the present invention further comprises a plurality of lower isolation pads 200, as shown in fig. 3, 8 and 9. The lower isolation pads 200 are disposed at the bottom of the support legs 71 at the bottom of the machine stand 70. Therefore, low-frequency noise or any vibration wave transmitted from the floor is absorbed by the lower isolation pads 200, so that the effect that the low-frequency noise is transmitted to the base 10 through the machine table 70 and enters the testing chamber A is reduced, noise and resonance interference testing is avoided, and the testing accuracy of the microphone to be tested is improved.
Referring to fig. 10, fig. 10 is a cross-sectional view illustrating staggered arrangement of wire holes of a base and wire holes of a soundproof door of a microphone testing device according to the present invention. In the preferred embodiment, one side of the base 10 is provided with a wire hole 13, and the wire hole 13 is communicated with the test chamber A; the microphone testing device of the present invention further comprises a soundproof door 300 and a wire 400, wherein the soundproof door 300 is disposed on one side of the base 10 and provided with a wire hole 301. More specifically, the wire hole 13 of the base 10 is opened on one of the other two sides of the base 10, and is located on the different side of the base 10 from the two platforms 12, and the soundproof door 300 is located on the same side of the base 10 as the wire hole 13 of the base 10. It is important that the line hole 13 of the base 10 and the line hole 301 of the soundproof door 300 do not extend on line all the time, that is, the extending direction of the line hole 13 of the base 10 and the extending direction of the line hole 301 of the soundproof door 300 are staggered. More specifically, an axis of the wire hole 13 of the base 10 is parallel to an axis of the wire hole 301 of the soundproof door 300, and the axis of the wire hole 13 of the base 10 does not overlap with the axis of the wire hole 301 of the soundproof door 300. After passing through the wire hole 301 of the soundproof door 300, the wire 400 is bent, passes through the wire hole 13 of the base 10, enters the test chamber a, and is electrically connected to the inspection equipment inside the test chamber a. Therefore, after passing through the wire hole 301 of the soundproof door 300, the low-frequency noise cannot pass through the wire hole 13 of the base 10 and enter the test chamber a, but instead, the low-frequency noise collides with the outer side wall of the base 10 to be weakened, so that the test accuracy of the microphone to be tested is improved.
In this embodiment, a hollow chamber 302 is formed inside the soundproof door 300, and the hollow chamber 302 of the soundproof door 300 is communicated with the wire hole 13 of the base 10 and the wire hole 301 of the soundproof door 300. Accordingly, the hollow chamber 302 of the soundproof door 300 can provide a sufficient space to allow the wire 400 to be easily bent, and therefore, the wire 400 is easily bent in a zigzag shape in the hollow chamber 302 of the soundproof door 300 after passing through the wire hole 301 of the soundproof door 300, and then enters the test chamber a through the wire hole 13 of the base 10.
Preferably, the base 10 has a through hole 14 formed at one side thereof and two sealing plates 15. The two sealing plates 15 of the base 10 are disposed in the through hole 14 of the base 10 and have a notch on adjacent sides, and the two notches of the two sealing plates 15 of the base 10 are combined to form the wire hole 13 of the base 10. The diameter of the wire hole 13 of the base 10 is equal to the outer diameter of the wire 400, so that the two sealing plates 15 of the base 10 tightly clamp the wire 400, thereby providing a sealing effect, and preventing low frequency noise from entering the testing chamber a through the wire 400, and improving the testing accuracy of the microphone to be tested.
Preferably, the soundproof door 300 has a through hole 303 opened at a side thereof away from the base 10 and has two sealing plates 304304. The two sealing plates 304 of the soundproof door 300 are disposed in the through hole 303 of the soundproof door 300 and have a notch at adjacent sides, and the two notches of the two sealing plates 304 of the soundproof door 300 are combined to form the wire hole 301 of the soundproof door 300. The diameter of the wire hole 301 of the soundproof door 300 is equal to the outer diameter of the wire 400, so that the two sealing plates 304 of the soundproof door 300 tightly clamp the wire 400, thereby providing a sealing effect, and preventing low frequency noise from entering the test chamber a through the wire 400, improving the test accuracy of the microphone to be tested.
In summary, in the microphone testing device of the present invention, in the state where the floating joint 40 moves downward to the disengaged position, the plurality of upper isolation pads 80, the plurality of pressure plate isolation pads 100 and the plurality of lower isolation pads 200, and the two sealing plates 15 of the base 10 and the two sealing plates 304 of the soundproof door 300 are matched, so that the low frequency noise can be effectively prevented from being transmitted to the upper cover 20 and the base 10 through the moving device 50, the floating joint 40, the machine table 70, the pressure plate 90, the wire hole 13 of the base 10, the wire hole 301 of the soundproof door 300, the wire 400, and other components to enter the testing chamber a, thereby avoiding the noise and resonance interference test and improving the testing accuracy of the microphone.
Furthermore, the floating joint 40 can move vertically and smoothly in the guide hole 313 through the guide post 60 without shaking, so that the floating joint 40 is prevented from contacting the fixed seat 30 when being out of position, low-frequency noise is prevented from being transmitted to the upper cover 20 through the fixed seat 30 and entering the testing chamber a, noise and resonance interference testing is avoided, and the testing accuracy of the microphone to be tested is improved.
The foregoing is illustrative of the preferred embodiment of the present invention and is not to be construed as limiting thereof, since any modification and variation of the present invention without departing from the spirit thereof is intended to be covered thereby.
Claims (10)
1. A microphone testing device comprising:
a base;
the upper cover is arranged at the top of the base and forms a test chamber together with the base;
the fixed seat is provided with a top wall and a side wall, the top wall is provided with an opening, the side wall is arranged between the top wall and the top of the upper cover, the top wall, the side wall and the top of the upper cover of the fixed seat jointly enclose a containing chamber, and the containing chamber is communicated with the opening;
the first end of the floating joint is arranged in the accommodating chamber, the outer diameter of the first end of the floating joint is larger than the inner diameter of the opening of the top wall of the fixed seat, and the second end of the floating joint penetrates through the opening of the top wall of the fixed seat; and
a moving device disposed at the second end of the floating joint and driving the floating joint to move vertically between a contact position and a release position, when the floating joint is at the contact position, the top surface of the first end of the floating joint contacts the top wall of the fixed seat, so that the moving device can move the upper cover close to or away from the base through the floating joint and the fixed seat,
when the upper cover moves to the top of the base, the moving device further drives the floating joint to move downwards to the disengaging position, so that the top surface of the first end of the floating joint disengages from the top wall of the fixed seat and keeps a distance with the top wall of the fixed seat, and keeps a distance with the top of the upper cover.
2. The microphone testing device as claimed in claim 1, wherein one of the top wall of the fixing base and the first end of the floating connector defines a guiding hole, and the microphone testing device further comprises a guiding post disposed on the other of the top wall of the fixing base and the first end of the floating connector and movable in the guiding hole.
3. The microphone testing device as claimed in claim 2, wherein the top wall of the fixing base is formed with two guiding holes, two of the guiding holes are located at opposite sides of the opening, the first end of the floating joint is formed with two through holes penetrating the top and bottom surfaces thereof, the microphone testing device comprises two guide posts, and the two guide posts are respectively inserted into the two through holes of the first end of the floating joint and are movable in the two guiding holes of the top wall of the fixing base.
4. The microphone testing device as claimed in claim 3, wherein the opening of the top wall of the fixing base has an inner ring plane and an inner ring inclined plane, the inner ring inclined plane is located between the inner ring plane and the bottom surface of the top wall of the fixing base, the two guiding holes respectively penetrate through the top surface and the bottom surface of the top wall of the fixing base, the top surface of the first end of the floating joint has an upper ring plane, an outer ring inclined plane and a lower ring plane, the outer ring inclined plane of the first end of the floating joint is located between the upper ring plane and the lower ring plane, and the two through holes penetrate through the lower ring plane of the first end of the floating joint;
when the floating joint is located at the disengaging position, the outer ring inclined plane of the top surface of the first end part of the floating joint is far away from the inner ring inclined plane of the opening of the top wall of the fixed seat, and the lower ring plane of the top surface of the first end part of the floating joint is far away from the bottom surface of the top wall of the fixed seat.
5. The apparatus of claim 1, further comprising a platform and a plurality of upper spacers, wherein the upper spacers are disposed between the bottom surface of the base and the top surface of the platform.
6. The microphone testing device as claimed in claim 5, wherein the base has four outer sides, two platforms respectively extend outwards from the bottom edges of the outer sides of the base, the two platforms being opposite to each other, and the upper isolation pads are disposed between the bottom surfaces of the two platforms of the base and the top surface of the platform.
7. The microphone testing device as claimed in claim 6, further comprising a plurality of pressing plates and a plurality of pressing plate spacers, each pressing plate having a longitudinal plate and a transverse plate, the longitudinal plates of the plurality of pressing plates being disposed on the top surface of the platform, the transverse plates of the plurality of pressing plates extending laterally from the inner sides of the longitudinal plates of the plurality of pressing plates to above the platform of the base, respectively, the plurality of pressing plate spacers being disposed between the bottom surfaces of the transverse plates of the plurality of pressing plates and the top surface of the platform of the base.
8. The microphone testing device as claimed in claim 1, wherein a wire hole is formed at one side of the base, the wire hole communicates with the testing chamber, the microphone testing device further comprises a soundproof door and a wire, the soundproof door is formed at one side of the base and is provided with a wire hole, the wire hole of the base and the wire hole of the soundproof door extend in different straight lines, and the wire is bent after passing through the wire hole of the soundproof door and then enters the testing chamber through the wire hole of the base.
9. The microphone testing device as claimed in claim 8, wherein the base has a through hole at one side and two sealing plates, the two sealing plates of the base are disposed in the through hole of the base and have a notch at adjacent sides, the two notches of the two sealing plates of the base combine to form the wire hole of the base, the diameter of the wire hole of the base is equal to the outer diameter of the wire, so that the two sealing plates of the base tightly clamp the wire.
10. The microphone testing device according to claim 8, wherein the soundproof door has a through hole at a side thereof remote from the base and two sealing plates, the two sealing plates of the soundproof door are disposed in the through hole of the soundproof door and have a notch at adjacent sides thereof, the two notches of the two sealing plates of the soundproof door are combined to form a wire hole of the soundproof door, the wire hole of the soundproof door has a diameter equal to an outer diameter of the wire, so that the two sealing plates of the soundproof door tightly clamp the wire.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710961838.0A CN109672969B (en) | 2017-10-16 | 2017-10-16 | Microphone testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710961838.0A CN109672969B (en) | 2017-10-16 | 2017-10-16 | Microphone testing device |
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| CN109672969A CN109672969A (en) | 2019-04-23 |
| CN109672969B true CN109672969B (en) | 2020-07-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102020113165A1 (en) | 2020-05-14 | 2021-11-18 | Cohu Gmbh | A MICROPHONE TEST MODULE AND PROCEDURE FOR TESTING MICROPHONES |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0549097A (en) * | 1991-08-19 | 1993-02-26 | Ono Sokki Co Ltd | Large sound pressure provision device for measuring and calibrating microphone characteristic |
| CN102711029A (en) * | 2012-01-09 | 2012-10-03 | 瑞声声学科技(深圳)有限公司 | Testing method of intrinsic noise voltage of microphone and testing device of testing method |
| CN105704635A (en) * | 2016-03-31 | 2016-06-22 | 歌尔声学股份有限公司 | Microphone vibration testing jig |
| US9510120B2 (en) * | 2013-10-30 | 2016-11-29 | Amkor Technology, Inc. | Apparatus and method for testing sound transducers |
| CN106686512A (en) * | 2017-01-18 | 2017-05-17 | 歌尔股份有限公司 | Audio test unit for microphones of wearable electronics |
-
2017
- 2017-10-16 CN CN201710961838.0A patent/CN109672969B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0549097A (en) * | 1991-08-19 | 1993-02-26 | Ono Sokki Co Ltd | Large sound pressure provision device for measuring and calibrating microphone characteristic |
| CN102711029A (en) * | 2012-01-09 | 2012-10-03 | 瑞声声学科技(深圳)有限公司 | Testing method of intrinsic noise voltage of microphone and testing device of testing method |
| US9510120B2 (en) * | 2013-10-30 | 2016-11-29 | Amkor Technology, Inc. | Apparatus and method for testing sound transducers |
| CN105704635A (en) * | 2016-03-31 | 2016-06-22 | 歌尔声学股份有限公司 | Microphone vibration testing jig |
| CN106686512A (en) * | 2017-01-18 | 2017-05-17 | 歌尔股份有限公司 | Audio test unit for microphones of wearable electronics |
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Effective date of registration: 20200827 Address after: No.3366 Chengyang Road, Weitang Town, Xiangcheng District, Suzhou City, Jiangsu Province Patentee after: Suzhou aifangxindong automation equipment Co.,Ltd. Address before: Shintake Takashi Patentee before: Sifang Automation Machinery Co.,Ltd. |
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Address after: 214000, No. 6 Xianfeng Middle Road, Xishan District, Wuxi City, Jiangsu Province, China Electronics (Wuxi) Digital Chip City 3B # - A Patentee after: Wuxi Aifang Xindong Automation Equipment Co.,Ltd. Address before: 215000 3366 Chengyang Road, Weitang Town, Xiangcheng District, Suzhou City, Jiangsu Province Patentee before: Suzhou aifangxindong automation equipment Co.,Ltd. |