CN206847774U - Sound pressure level test device - Google Patents
Sound pressure level test device Download PDFInfo
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- CN206847774U CN206847774U CN201720653166.2U CN201720653166U CN206847774U CN 206847774 U CN206847774 U CN 206847774U CN 201720653166 U CN201720653166 U CN 201720653166U CN 206847774 U CN206847774 U CN 206847774U
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Abstract
Sound pressure level test device provided by the utility model, including：Support bar；Supporting table, it is mutually connected vertically positioned at support bar lower end, and with support bar, supporting table is used to carry sound level Acquisition Instrument；First support, it is connected to post upper；Second support, post upper is connected to, and first support is symmetrically distributed in the opposite sides of support bar with second support, has the first gap between first support and second support, the first gap is used to place mobile terminal to be measured.Sound pressure level test device provided by the utility model so that mobile terminal to be measured and sound level Acquisition Instrument are placed on direction perpendicular to the ground, avoid the influence for occurring to reflect or be superimposed to the sound pressure level test result degree of accuracy in desktop because of sound wave；Meanwhile test environment is fixed, it is abnormal to avoid the sound pressure level test data caused by environmental factor.
Description
Technical field
It the utility model is related to frame for movement technical field, more particularly to a kind of sound pressure level test device.
Background technology
Sustainable development and people's living standards continue to improve with science and technology, mobile phone, tablet personal computer, notebook electricity
The mobile terminals such as brain are more and more used in daily life.In order to meet a variety of demands of people, loudspeaker
The necessary accessory in mobile terminal device is turned into.The loudspeaker species that can be applied to inside mobile terminal device is a lot, although
Their working method is different, but final is all the air for being promoted by producing mechanical oscillation surrounding, air dielectric is produced ripple
Move so as to realize the conversion of " electricity-power-sound ".However, in order to ensure the performance of mobile terminal product, needed before dispatching from the factory to moving
The parameters of dynamic end product are tested, and the associated component of mobile terminal product is adjusted according to test result.
Wherein, it is an important parameter for weighing mobile terminal product electroacoustic performance to the test of speaker performance.And for loudspeaker
The test of progress includes many-side, such as the test of total harmonic distortion value, sound pressure level test, sensitivity test etc. again.It is many at this
In more test parameters, the test of sound pressure level is to weigh an important indicator of mobile terminal device loudness.
Sound pressure level represents that it is defined as the ratio by acoustic pressure virtual value p (e) to be measured and reference sound pressure p (ref) with symbol SPL
Value takes common logarithm, multiplied by with 20, i.e.,：SPL=20LOG (10) [p (e)/p (ref)].So-called acoustic pressure, just refer to have in medium
The difference of pressure P0 during pressure P and free sound field during sound field is acoustic pressure.Because the measurement of acoustic pressure is easier to realize, pass through sound
The measurement of pressure can also try to achieve other physical quantitys such as particle velocity indirectly, so commonly using this physical quantity in acoustics to describe sound
Ripple.For mobile terminal device, to put loudness closely related for sound pressure level and mobile terminal device outer.Loudness is put outside so-called,
Refer to loudness when loudness during such as incoming ring tone loudness, audio file broadcasting, video file play etc..Sound pressure level is weighing apparatus
An important indicator of mobile terminal device is measured, is the sole indicator for weighing mobile terminal device loudness specifically.
Accompanying drawing 1 is the structural representation for carrying out sound pressure level test in the prior art.As shown in figure 1, at present, to mobile whole
During end 12 carries out sound pressure level test, mobile terminal 12 and sound level Acquisition Instrument 13 are placed in the surface of desktop 11, and move
The outlet sound mouth 121 of dynamic terminal 12 is corresponding with the microphone of sound level Acquisition Instrument 13 to be placed, and in order to ensure sound level Acquisition Instrument 13 determines
As a result accurate, the outlet sound mouth 121 of sound level Acquisition Instrument 13 and mobile terminal 12 keeps a pre-determined distance, such as 10 centimetres or 30 lis
Rice.When being tested, a testing audio file is played by mobile terminal 12, and the broadcast sound volume of mobile terminal 12 is adjusted
To maximum.Mobile terminal 12 is received by the voice signal that outlet sound mouth 121 is sent by sound level Acquisition Instrument 13.In sound level Acquisition Instrument 13
Microphone receive the voice signal, and voice signal is converted into electric signal, then by preamplifier transforming impedance, make transaudient
Device matches with attenuator；Output signal is added to weighting network by amplifier, and spectrum overlapping (or external filters) is carried out to signal,
Then certain amplitude is may amplify the signal to through attenuator and amplifier again, is sent to rms detector (or outside by level recording
Instrument), the numerical value of sound sound level is provided on indicating meter, puts whether loudness meets default want to judge the outer of mobile terminal to be measured
Ask.
But during the sound pressure level of existing test mobile terminal, mobile terminal to be measured and sound level Acquisition Instrument are all
It is to lie against on desktop, and desktop can produce the reflection and superposition of sound wave in itself so that the sound letter that sound level Acquisition Instrument collects
Number inaccuracy, so as to cause final sound pressure level test result that there is relatively large deviation, it is impossible to truly reflect mobile terminal to be measured
Put loudness outside.Therefore, the sound pressure level of mobile terminal how is accurately determined, is technical problem urgently to be resolved hurrily at present.
Utility model content
The utility model provides a kind of sound pressure level test device, to solve in existing sound pressure level test process, due to
The problem of acoustic emission of desktop and superposition, the caused test result degree of accuracy are relatively low.
In order to solve the above problems, the utility model provides a kind of sound pressure level test device, including：Support bar；Support
Platform, it is mutually connected vertically positioned at the support bar lower end, and with the support bar, the supporting table is used to carry sound level collection
Instrument；First support, it is connected to the post upper；Second support, it is connected to the post upper, and the first support
The opposite sides of the support bar is symmetrically distributed in the second support, is had between the first support and the second support
There is the first gap, first gap is used to place mobile terminal to be measured.
Preferably, the sound pressure level test device also includes a base, and the base is located at the bottom of the support bar, and
With the support bar vertical connection.
Preferably, a fixed pedestal is additionally provided with the supporting table, there is a groove at the top of the fixed pedestal, it is described
Sound level Acquisition Instrument is placed in the groove.
Preferably, the first block piece and the second block piece, first block piece and institute are provided with the fixed pedestal
State the opposite sides that the second block piece is symmetricly set in the groove.
Preferably, the sound pressure level test device also includes a connection piece, and the supporting table passes through the connector and institute
State support bar connection.
Preferably, the connector is flexibly connected with the support bar, and the connector can be along the support bar
Axial movement.
Preferably, the sound pressure level test device also includes the first locating part and the second locating part；First locating part
It is connected with the first support；Second locating part is connected with the second support；First locating part and described second
There is the second gap, the mobile terminal to be measured is positioned in second gap between locating part.
Preferably, first locating part includes the first gag lever post, and first through hole is provided with the first support, described
First gag lever post passes through the first through hole, and first gag lever post is being provided with the close to the end in second gap
One gripper pad；Second locating part includes the second gag lever post, and the second through hole, second limit are provided with the second support
Position bar passes through second through hole, and second gag lever post is provided with the second clamping in the end close to second gap
Pad.
Preferably, be provided with the first external screw thread on first gag lever post, the first through hole be internally provided with it is described
First internal thread corresponding to first external screw thread；The second external screw thread is provided with second gag lever post, inside second through hole
It is provided with the second internal thread corresponding with second external screw thread.
Preferably, end of first gag lever post away from second gap is provided with the first in command；Second limit
Position end of the bar away from second gap is provided with the second in command.
Sound pressure level test device provided by the utility model, between mobile terminal to be measured is placed between two supports
In gap, sound level Acquisition Instrument is arranged in supporting table so that mobile terminal to be measured and sound level Acquisition Instrument are placed in perpendicular to the ground
On direction, it is no longer necessary to lie against on desktop mobile terminal to be measured and sound level Acquisition Instrument, thus avoid because sound wave is in desktop
The influence of reflection or superposition to the sound pressure level test result degree of accuracy occurs；Meanwhile test environment is fixed, avoid because of environmental factor
Caused sound pressure level test data is abnormal.
Brief description of the drawings
Accompanying drawing 1 is the structural representation for carrying out sound pressure level test in the prior art；
Accompanying drawing 2 is the structural representation of the sound pressure level test device of the embodiment of the utility model first；
Accompanying drawing 3 is the structural representation of the supporting table of the sound pressure level test device of the embodiment of the utility model first
Figure；
Accompanying drawing 4 is the structural representation of the sound pressure level test device of the embodiment of the utility model second；
Accompanying drawing 5 is that the structure of the first locating part of the sound pressure level test device of the embodiment of the utility model second is shown
It is intended to；
Accompanying drawing 6 is the structural representation of the sound pressure level test device of the utility model embodiment 1.
Embodiment
The embodiment of sound pressure level test device provided by the utility model is elaborated below in conjunction with the accompanying drawings.
First embodiment
Present embodiment provides a kind of sound pressure level test device, and accompanying drawing 2 is the utility model embodiment
Sound pressure level test device structural representation.
As shown in Fig. 2 the sound pressure level test device of present embodiment, including support bar 21, supporting table 22, first
Frame 231, second support 232.The shape of support bar 21 can be the shaft-like or platy structure of a strip.The material of support bar 21
Can be metal, alloy or high polymer material, present embodiment is not construed as limiting to this, and those skilled in the art can basis
It is actually needed and is determined, such as in order to increase the integrally-built stability of sound pressure level test device, it is preferred that support bar 21 is adopted
It is made with metal material.Supporting table 22 is located at the lower end of support bar 21, and is mutually connected vertically with support bar 21, and supporting table is used
In carrying sound level Acquisition Instrument.The shape of supporting table 22 can be cylinder, cuboid or terrace with edge etc., as long as the carrying sound that can stablize
Level Acquisition Instrument.Supporting table 22 is mutually connected vertically with support bar 21, refers to plane of the support bar 21 where with supporting table 22
Vertically, and with supporting table 22 it is connected.Wherein, the particular location that support bar 21 is connected with supporting table 22, can be located at supporting table
It can be determined in face or positioned at support edge of table, those skilled in the art according to being actually needed.First support 231 connects
It is connected to the upper end of support bar 21；Second support 232, also it is connected to the upper end of support bar 21, and first support 231 and second support 232
It is symmetrically distributed in the opposite sides of support bar 21；And there is the first gap between first support 231 and second support 232, this
One gap is used to place mobile terminal to be measured.The concrete shape of first support 231 and second support 232, those skilled in the art
It can be set according to being actually needed, for firm clamping mobile terminal to be measured, as shown in Fig. 2 present embodiment
In the equal l-shaped structure of first support 231 and second support 232, i.e. first support 231 includes the first branch and the second branch,
The equal strip platy structure of first branch and the second branch, the first branch are connected with support bar 21, and the first branch and second point
Branch vertical connection；Second support 232 includes the 3rd branch and the 4th branch, threeth branch similar to the first branch, the second branch
With the 4th branch also equal strip platy structure, the 3rd branch is connected with support bar 21, and the 3rd branch is vertical with the 4th branch
Connection；An interval is formed between second branch and the 4th branch, and first is located at interval between the second branch and the 4th branch
In gap, mobile terminal to be measured is positioned in the interval between the second branch and the 4th branch.Using this structure, it is possible to will
Mobile terminal to be measured and sound level Acquisition Instrument are placed on direction perpendicular to the ground, avoid traditional acoustic desktop reflection,
The influence to test result is superimposed, improves the degree of accuracy of sound pressure level test.
In order to avoid causing cut etc. to damage to the shell of mobile terminal to be measured, it is preferred that as shown in Fig. 2 first support
231 are provided with the first gripper pad 261 close to the end in the first gap, and second support 232 is provided with close to the end in the first gap
Second gripper pad 262, mobile terminal to be measured are positioned between the first gripper pad 261 and the second gripper pad 262.In order to adapt to difference
The mobile terminal to be measured of size, to expand the application of sound pressure level test device, the first clamping in present embodiment
The gripper pad 262 of pad 261 and second is made using elastomeric material.So, because the elastic deformation of elastomeric material is special
Property, the size in the first gap can be adjusted, in order to place various sizes of mobile terminal to be measured.Specifically, when this is specific
During the equal l-shaped structure of first support 231 and second support 232 in embodiment, the first gripper pad 261 is located at the second branch
End, the second gripper pad 262 are located at the end of the 4th branch.Wherein, the first gripper pad 261 and the second gripper pad 262 is specific
Shape, those skilled in the art can be configured according to being actually needed, such as can be " [" type, present embodiment pair
This is not construed as limiting, as long as the clamping mobile terminal to be measured that can be consolidated.
In order that the sound pressure level test device that provides of present embodiment can consolidate be fixed on plane, improve and survey
The degree of accuracy of test result, it is preferred that as shown in Fig. 2 sound pressure level test device also includes a base 27, base 27 is located at support bar
21 bottom, and with the vertical connection of support bar 21.Wherein, base 27 is preferably shaped to tabular, and the material of base 27 is preferred
For metal material, such as iron.
For firm fixation sound level Acquisition Instrument, moving or rocking to test result generation shadow because of sound level Acquisition Instrument is avoided
Ring, it is preferred that a fixed pedestal 28 is additionally provided with supporting table 22, the top of fixed pedestal 28 has a groove 29, sound level collection
Instrument is placed in groove 29.Now, groove 29 just serves restriction effect, and sound level Acquisition Instrument is limited in groove 29, effectively anti-
Influence of the movement to test result of sound level Acquisition Instrument is stopped.
It is furthermore preferred that the first block piece and the second block piece are provided with fixed pedestal 28, the first block piece and the second resistance
Block piece is symmetricly set in the opposite sides of groove 29.So, the movement of sound level Acquisition Instrument is further prevented.It is specific next
Say, the first block piece and the second block piece can be arranged at the periphery of groove 29.
Accompanying drawing 3 is the structural representation of the supporting table of the sound pressure level test device of the embodiment of the utility model first
Figure.The supporting table 22 of sound pressure level test device in present embodiment can directly connect with the connected mode of support bar 21
Connect, such as weld；Can also be indirectly connected with, such as be connected by connector.Due to reality test process in, according to sound
Arbitrarily downgrade test requirement it is different, or the difference of mobile terminal to be measured, the distance of sound level Acquisition Instrument and mobile terminal to be measured be frequent
Need to adjust, therefore, in order to further expand the application of sound pressure level test device, it is preferred that as shown in figure 3, sound pressure level
Test device also includes a connection piece 31, and supporting table 22 is connected by connector 31 with support bar 21.It is furthermore preferred that connector 31
It is flexibly connected with support bar 21, and connector 31 can be along the axial movement of support bar 21.So, user's can according to
Test needs, convenient to adjust the distance between sound level Acquisition Instrument and mobile terminal to be measured.For example, the end of connector 31
Be provided with a connection ring 32 and a junction button 33, connection ring 32 with junction button 33 removably to be connected, when needs are along support bar
During 21 axial movement supporting table 22, connection ring 32 need to only be separated with junction button 33, connected along the axial movement of support bar 21
Bar 31, the movement of connecting rod 31 can drive the movement of supporting table 22 simultaneously, after supporting table 22 to suitable position is adjusted, only need
Connection ring 32 and junction button 33 are fastened, the connecting rod that is just over 31 is fixedly connected with support bar 21.Whole distance was adjusted
Journey, it is simple to operate, convenient, on the premise of the test result degree of accuracy is ensured, greatly improve the efficiency of test.
Sound pressure level test device provided by the utility model, between mobile terminal to be measured is placed between two supports
In gap, sound level Acquisition Instrument is arranged in supporting table so that mobile terminal to be measured and sound level Acquisition Instrument are placed in perpendicular to the ground
On direction, it is no longer necessary to lie against on desktop mobile terminal to be measured and sound level Acquisition Instrument, thus avoid because sound wave is in desktop
The influence of reflection or superposition to the sound pressure level test result degree of accuracy occurs；Meanwhile test environment is fixed, avoid because of environmental factor
Caused sound pressure level test data is abnormal.
Second embodiment
Present embodiment provides a kind of sound pressure level test device, and accompanying drawing 4 is that the utility model second is embodied
The structural representation of the sound pressure level test device of mode.
As shown in figure 4, the sound pressure level test device of present embodiment, including support bar 41, supporting table 42, first
Frame 431, second support 432.The shape of support bar 41 can be the shaft-like or platy structure of a strip.The material of support bar 41
Can be metal, alloy or high polymer material, present embodiment is not construed as limiting to this, and those skilled in the art can basis
It is actually needed and is determined, such as in order to increase the integrally-built stability of sound pressure level test device, it is preferred that support bar 41 is adopted
It is made with metal material.Supporting table 42 is located at the lower end of support bar 41, and is mutually connected vertically with support bar 41, and supporting table is used
In carrying sound level Acquisition Instrument.The shape of supporting table 42 can be cylinder, cuboid or terrace with edge etc., as long as the carrying sound that can stablize
Level Acquisition Instrument.Supporting table 42 is mutually connected vertically with support bar 41, refers to plane of the support bar 41 where with supporting table 42
Vertically, and with supporting table 42 it is connected.Wherein, the particular location that support bar 41 is connected with supporting table 42, can be located at supporting table
It can be determined in face or positioned at support edge of table, those skilled in the art according to being actually needed.First support 431 connects
It is connected to the upper end of support bar 41；Second support 432, also it is connected to the upper end of support bar 41, and first support 431 and second support 432
It is symmetrically distributed in the opposite sides of support bar 41；And there is the first gap between first support 431 and second support 432, this
One gap is used to place mobile terminal to be measured.The concrete shape of first support 431 and second support 432, those skilled in the art
It can be set according to being actually needed, for firm clamping mobile terminal to be measured, as shown in figure 4, present embodiment
In the equal l-shaped structure of first support 431 and second support 432, i.e. first support 431 includes the first branch and the second branch,
The equal strip platy structure of first branch and the second branch, the first branch are connected with support bar 41, and the first branch and second point
Branch vertical connection；Second support 432 includes the 3rd branch and the 4th branch, threeth branch similar to the first branch, the second branch
With the 4th branch also equal strip platy structure, the 3rd branch is connected with support bar 41, and the 3rd branch is vertical with the 4th branch
Connection；An interval is formed between second branch and the 4th branch, and first is located at interval between the second branch and the 4th branch
In gap, mobile terminal to be measured is positioned in the interval between the second branch and the 4th branch.Using this structure, it is possible to will
Mobile terminal to be measured and sound level Acquisition Instrument are placed on direction perpendicular to the ground, avoid traditional acoustic desktop reflection,
The influence to test result is superimposed, improves the degree of accuracy of sound pressure level test.
In order that the sound pressure level test device that provides of present embodiment can consolidate be fixed on plane, improve and survey
The degree of accuracy of test result, it is preferred that as shown in figure 4, sound pressure level test device also includes a base 47, base 47 is located at support bar
41 bottom, and with the vertical connection of support bar 41.Wherein, base 47 is preferably shaped to tabular, and the material of base 47 is preferred
For metal material, such as iron.
For firm fixation sound level Acquisition Instrument, moving or rocking to test result generation shadow because of sound level Acquisition Instrument is avoided
Ring, it is preferred that a fixed pedestal 48 is additionally provided with supporting table 42, the top of fixed pedestal 48 has a groove 49, sound level collection
Instrument is placed in groove 49.Now, groove 49 just serves restriction effect, and sound level Acquisition Instrument is limited in groove 49, effectively anti-
Influence of the movement to test result of sound level Acquisition Instrument is stopped.
It is furthermore preferred that the first block piece and the second block piece are provided with fixed pedestal 48, the first block piece and the second resistance
Block piece is symmetricly set in the opposite sides of groove 49.So, the movement of sound level Acquisition Instrument is further prevented.It is specific next
Say, the first block piece and the second block piece can be arranged at the periphery of groove 49.
In present embodiment, supporting table 42 is identical with the first embodiment with the connected mode of support bar 41,
Sound pressure level test device i.e. in present embodiment also includes a connection piece, and supporting table 42 passes through connector and support bar 41
Connection.It is furthermore preferred that connector is flexibly connected with support bar 41, and connector can be along the axial movement of support bar 41.Wherein,
The specific connected mode of connecting rod is identical with the first embodiment, and referring to accompanying drawing 3, present embodiment repeats no more.
For more stable fixation mobile terminal to be measured, place mobile terminal to be measured and dropped in test process, preferably
, as shown in figure 4, sound pressure level test device also includes the first locating part and the second locating part；First locating part and first support
431 connections；Second locating part is connected with second support 432；There is the second gap between first locating part and the second locating part, treat
Mobile terminal is surveyed to be positioned in the second gap.The structure of first locating part, the structure of the second locating part, the first locating part and first
The mode that the mode of the connection of support 431, the second locating part are connected with second support 432, those skilled in the art can basis
It is actually needed and is set, as long as the fixation that ensures the second gap between the first locating part and the second locating part and can stablize is treated
Survey mobile terminal.In order to simplify the structure of the sound pressure level test device of present embodiment, cost is reduced, it is preferred that
As shown in figure 4, the first locating part includes the first gag lever post 441, first through hole, the first gag lever post are provided with first support 431
441 pass through first through hole, and the first gag lever post is provided with the first gripper pad 461 in the end close to the second gap；Second limit
Position part includes the second gag lever post 442, and the second through hole is provided with second support 432, and the second gag lever post 442 passes through the second through hole,
And the second gag lever post 442 is provided with the second gripper pad 462 in the end close to the second gap.In order to adapt to various sizes of treat
Mobile terminal is surveyed, to expand the application of sound pressure level test device, the first gripper pad 461 in present embodiment and the
Two gripper pads 462 are made using elastomeric material.So, due to the elastic deformation characteristics of elastomeric material, can adjust
The size in whole second gap, in order to place various sizes of mobile terminal to be measured, while avoid to mobile terminal to be measured
Shell causes cut etc. to damage.Accompanying drawing 5 is the first limit of the sound pressure level test device of the embodiment of the utility model second
The structural representation of position part.As shown in figure 5, the concrete shape of the first gripper pad 461 can be " [" type, similar, the second clamping
The concrete shape of pad 462 can also be " [" type, with two apparent surfaces of firm clamping mobile terminal to be measured.
Wherein, the first locating part and the connected mode of first support 431 can be fixedly connected or activity even
Connect；Similar, the second locating part can be fixedly connected or be flexibly connected with the connected mode of second support 432.For
Sound pressure level test device that present embodiment provides is caused to can apply to the survey of various sizes of mobile terminal to be measured
Examination, it is preferred that first locating part is flexibly connected with first support 431, and the second locating part connects with the activity of second support 432
Connect.So, because the second gap is located at the first inner space, by adjusting between the first locating part and the second locating part
Relative position relation, the size in the second gap can be adjusted, while mobile terminal stability maintenance to be measured is improved, Ke Yishi
For various sizes of mobile terminal to be measured, for example, when the size of mobile terminal to be measured is smaller, the first locating part and the are adjusted
Relative position relation between two locating parts, reduce the size in the second gap；On the contrary, when the size of mobile terminal to be measured is larger
When, the relative position relation between the first locating part and the second locating part is adjusted, increases the size in the second gap.First locating part
The mode that the mode that is flexibly connected with first support 431, the second locating part are flexibly connected with second support 432 can be according to reality
Need to set, in present embodiment, in order to reduce the cost of sound pressure level test device, simplify the operating procedure of user, it is excellent
Choosing, as shown in figure 5, be provided with the first external screw thread 4411 on the first gag lever post 441, first through hole be internally provided with outside first
First internal thread corresponding to screw thread 4411；Be provided with the second external screw thread on second gag lever post 442, the second through hole be internally provided with
Second internal thread corresponding to second external screw thread.So, the first internal thread in first through hole and the first gag lever post 441 are passed through
On the first external screw thread 4411, the first gag lever post 441 can be connected with first support 431, meanwhile, even if because of adjustment the
The size in two gaps and after mobile first gag lever post 441, can also realize the firm of the first gag lever post 441 and first support 431
Connection.Similar, can be by by the second external screw thread on the second internal thread in the second through hole and the second gag lever post 442
Two gag lever posts 442 are connected with second support 432, meanwhile, even if it is spacing to move second because adjusting the size in the second gap
After bar 442, the second gag lever post 442 and the firm connection of second support 432 can be also realized.
The size in the second gap is adjusted for the ease of user, it is preferred that as shown in Figure 4,5, the first gag lever post 441 is away from the
The end in two gaps is provided with the first in command 451；Second end of the gag lever post 442 away from the second gap is provided with the second in command
452.Wherein, the concrete shape of the first in command 451 and the second in command 452, those skilled in the art can according to be actually needed into
Row is set, as long as being easy to user to grasp.
Sound pressure level test device provided by the utility model, between mobile terminal to be measured is placed between two supports
In gap, sound level Acquisition Instrument is arranged in supporting table so that mobile terminal to be measured and sound level Acquisition Instrument are placed in perpendicular to the ground
On direction, it is no longer necessary to lie against on desktop mobile terminal to be measured and sound level Acquisition Instrument, thus avoid because sound wave is in desktop
The influence of reflection or superposition to the sound pressure level test result degree of accuracy occurs；Meanwhile test environment is fixed, avoid because of environmental factor
Caused sound pressure level test data is abnormal.
Embodiment 1
A kind of sound pressure level test device is present embodiments provided, accompanying drawing 6 is the sound pressure level test of the utility model embodiment 1
The structural representation of device.
As shown in fig. 6, the sound pressure level test device that the present embodiment provides includes support bar 61, supporting table 62, first support
631 and second support 632.The rod-like structure for being shaped as a strip of support bar 61, the material of support bar 61 is metal.Support
Platform 62 is located at the lower end of support bar 61, and is mutually connected vertically with support bar 61, and supporting table 62 is used to carry sound level Acquisition Instrument 72.Branch
Support platform 62 is shaped as cuboid.Specifically, a fixed pedestal 68 is additionally provided with supporting table 62, the top of fixed pedestal 68 has
One groove 69, sound level Acquisition Instrument 72 are placed in groove 69.First support 631 is connected to the upper end of support bar 61；Second support 632,
Also the upper end of support bar 61 is connected to, and first support 631 is symmetrically distributed in the opposite sides of support bar 61 with second support 632；
And there is the first gap between first support 631 and second support 632, first gap is used to place mobile terminal to be measured.This
Mobile terminal to be measured in embodiment is mobile phone 71.Mobile phone 71 includes outlet sound mouth 711 and display screen 712.Sound level Acquisition Instrument 72
The position of microphone 721 and the position correspondence of the outlet sound mouth 711 of mobile phone 71.632 equal l-shaped of first support 631 and second support
Structure.
Sound pressure level test device in the present embodiment also includes a base 67, and base 67 is located at the bottom of support bar 61, and
With the vertical connection of support bar 61.Wherein, base 67 be shaped as tabular, material is metallic iron.
Sound pressure level test device in the present embodiment also includes a connection piece, and supporting table 62 passes through connector and support bar 61
Connection.Moreover, connector is flexibly connected with support bar 61, and connector can be along the axial movement of support bar 61.Wherein, connect
The end of part is provided with a connection ring and a junction button, and connection ring is removably to be connected with junction button,
As shown in fig. 6, sound pressure level test device also includes the first locating part and the second locating part；First locating part and first
Support 631 connects；Second locating part is connected with second support 632；Have between first locating part and the second locating part between second
Gap, mobile phone 71 are positioned in the second gap.Specifically, the first locating part includes the first gag lever post 641, in first support 631
First through hole is provided with, the first gag lever post 6411 passes through first through hole, and the first gag lever post is close to the end in the second gap
It is provided with the first gripper pad 661；Second locating part includes the second gag lever post 642, and the second through hole is provided with second support 632,
Second gag lever post 642 passes through the second through hole, and the second gag lever post 642 is provided with the second clamping in the end close to the second gap
Pad 662.First gripper pad 661 and the second gripper pad 662 are made using rubber.
Wherein, first locating part is flexibly connected with first support 631, and the second locating part is lived with second support 632
Dynamic connection.Specifically, the first external screw thread is provided with the first gag lever post 641, first through hole is internally provided with and the first outer spiral shell
First internal thread corresponding to line；Be provided with the second external screw thread on second gag lever post 642, the second through hole be internally provided with outside second
Second internal thread corresponding to screw thread.
First end of the gag lever post 641 away from the second gap is provided with the first in command 651；Second gag lever post 642 is away from
The end in two gaps is provided with the second in command 652.User need to only rotate the first in command 651 and the during specific use
The can of second chief 652 realizes the regulation to the second gap.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
Art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as the scope of protection of the utility model.
Claims (10)
- A kind of 1. sound pressure level test device, it is characterised in that including：Support bar；Supporting table, it is mutually connected vertically positioned at the support bar lower end, and with the support bar, the supporting table is used to carry sound Level Acquisition Instrument；First support, it is connected to the post upper；Second support, is connected to the post upper, and the first support be symmetrically distributed in the second support it is described The opposite sides of support bar, has the first gap between the first support and the second support, first gap is used for Place mobile terminal to be measured.
- 2. sound pressure level test device according to claim 1, it is characterised in that the sound pressure level test device also includes one Base, the base are located at the bottom of the support bar, and with the support bar vertical connection.
- 3. sound pressure level test device according to claim 1 a, it is characterised in that fixation is additionally provided with the supporting table Pedestal, the fixed pedestal top have a groove, and the sound level Acquisition Instrument is placed in the groove.
- 4. sound pressure level test device according to claim 3, it is characterised in that the first resistance is provided with the fixed pedestal Block piece and the second block piece, first block piece and second block piece are symmetricly set in the opposite sides of the groove.
- 5. sound pressure level test device according to claim 1, it is characterised in that the sound pressure level test device also includes one Connector, the supporting table are connected by the connector with the support bar.
- 6. sound pressure level test device according to claim 5, it is characterised in that the connector and support bar activity Connection, and the connector can be along the axial movement of the support bar.
- 7. sound pressure level test device according to claim 1, it is characterised in that the sound pressure level test device also includes the One locating part and the second locating part；First locating part is connected with the first support；Second locating part and described the Two supports connect；There is the second gap, the mobile terminal to be measured is put between first locating part and second locating part It is placed in second gap.
- 8. sound pressure level test device according to claim 7, it is characterised in that it is spacing that first locating part includes first Bar, first through hole is provided with the first support, and first gag lever post passes through the first through hole, and first limit Position bar is provided with the first gripper pad in the end close to second gap；Second locating part includes the second gag lever post, institute State and the second through hole is provided with second support, second gag lever post passes through second through hole, and second gag lever post End close to second gap is provided with the second gripper pad.
- 9. sound pressure level test device according to claim 8, it is characterised in that be provided with first on first gag lever post External screw thread, the first through hole are internally provided with the first internal thread corresponding with first external screw thread；Second gag lever post On be provided with the second external screw thread, second through hole is internally provided with the second internal thread corresponding with second external screw thread.
- 10. sound pressure level test device according to claim 8, it is characterised in that first gag lever post is away from described The end in two gaps is provided with the first in command；End of second gag lever post away from second gap is provided with second Hand.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720653166.2U CN206847774U (en) | 2017-06-06 | 2017-06-06 | Sound pressure level test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720653166.2U CN206847774U (en) | 2017-06-06 | 2017-06-06 | Sound pressure level test device |
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| CN206847774U true CN206847774U (en) | 2018-01-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101716A (en) * | 2017-06-06 | 2017-08-29 | 深圳市泰衡诺科技有限公司 | Sound pressure level test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101716A (en) * | 2017-06-06 | 2017-08-29 | 深圳市泰衡诺科技有限公司 | Sound pressure level test device |
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