CN209153692U - Adjustable ear-shield type sound field audiometry device - Google Patents
Adjustable ear-shield type sound field audiometry device Download PDFInfo
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- CN209153692U CN209153692U CN201821338539.8U CN201821338539U CN209153692U CN 209153692 U CN209153692 U CN 209153692U CN 201821338539 U CN201821338539 U CN 201821338539U CN 209153692 U CN209153692 U CN 209153692U
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Abstract
The utility model discloses adjustable ear-shield type sound field audiometry devices, between ear and earphone, establish an adjustable closed sound insulation space using sound insulation cavity.Sealing element is close to ear surrounding skin, the disposable test earphone in space in sound insulation shell, regulating mechanism is provided between sealing element and sound insulation shell, including sound insulation cavity, adjuster and metal clips, sound insulation cavity is hollow structure, metal clips is built in sound insulation cavity and fits in the inner wall of sound insulation cavity, and one end of adjuster passes through sound insulation cavity and metal clips cooperates.Pass through control regulator, it can control metal clips to shrink or stretch in the cavity, it can be under conditions of keeping that distance is constant between earphone and ear, so that the volume of sound insulation cavity becomes smaller or larger, so that listening device can satisfy the test of different conditions, different projects can be tested using the same device, improve the insufficient and cumbersome of traditional sound field audiometry method, improve testing efficiency and accuracy.
Description
Technical field
The utility model relates to a kind of hearing test device, in particular to a kind of adjustable ear-shield type sound field audiometry dress
It sets.
Background technique
There is the behavior reaction audiometry project much carried out using sonic stimulation in otology, such as: the assessment of the auditory acuity is (pure
Sound audiometry), speech audiometry, children's hearing test, the measurement of function of hearing aid gain and effect assessment, artificial cochlea's assessment etc..
These project some are carried out using earphone, and some then needs to carry out using loudspeaker.The test of usual naked ear uses earphone,
And wear hearing device due to earphone can not wrapping device, then need to carry out sound field audiometry.Free field measurement is exactly in audiometry
Interior issues test acoustical signal using two loudspeakers, so that test sound is entered back into human ear by hearing device, to measure wearing
Threshold level is listened after hearing device, whether the final parameter for assessing hearing device is reasonable.Carrying out Free field measurement requires subject to sit
What is carried out apart from minimum 1 meter of the position of loudspeaker, while there cannot be big noise jamming in sound field environment, so will be in sound insulation
Indoor progress.
Currently, Free field measurement is difficult to carry out in outpatient service, reason can be summarized as the following: first, it is dedicated to build sound field
Soundproof room space occupied it is more, it is at high cost；Second, device for sound field audiometry it is at high cost；Third, even if facility is complete,
Cumbersome bothersome due to testing procedure, accuracy is low, many times simply without test.Wherein, the impaired hearing of subject
Degree it is different the accuracy of test is influenced it is very big, in sound field environment, if binaural listening is close, then it is measured the result is that
Reflect bilateral, and the threshold of audibility of unilateral ear can not be obtained.These factors all on the development of Free field measurement project and popularize influence very
Greatly, but these projects are again particularly significant for the evaluation work of hearing device.
Utility model content
The purpose of this utility model is to provide for simple a kind of structure, small in size, save the cost, easy to operate adjustable
The ear-shield type sound field audiometry device of section.
To achieve the above object, one aspect according to the present utility model provides a kind of adjustable ear-shield type sound field
Listening device, including sound insulation shell, earmuff and microphone device, microphone device are set in sound insulation shell and connect with test macro
It connects, one end of earmuff is connect with sound insulation shell, and it further includes regulating mechanism that the other end, which covers at testee's ear periphery, adjusts machine
Structure is set between sound insulation shell and earmuff, and regulating mechanism includes sound insulation cavity, adjuster and metal clips, during sound insulation cavity is
Hollow structure and both ends are connected with sound insulation shell and earmuff respectively, and metal clips is built in sound insulation cavity and fits in sound insulation cavity
Inner wall, one end of adjuster passes through sound insulation cavity and metal clips cooperates.
Under conditions of distance is constant between holding microphone device and ear as a result, by adjuster, metal can control
Elastic slice is in sound insulation cavity contract or stretching, extension, so that the volume of sound insulation cavity becomes smaller or larger, that is, changing
The size of sound field spatial volume, enables adjustable ear-shield type sound field audiometry device of the utility model to expire in sound insulation shell
The test of sufficient different conditions can test different projects using the same device, improve traditional sound field audiometry side
Method deficiency and it is cumbersome, improve testing efficiency and accuracy, while the apparatus structure is simple, small in size, greatly reducing makes
With and manufacturing cost, facilitate marketing.
In some embodiments, sound insulation cavity both ends are detachably connected with sound insulation shell and earmuff respectively.It insulates against sound as a result,
The cavity both ends modes that are connected through a screw thread or are fastened and connected etc. with sound insulation shell and earmuff respectively are detachably connected, and insulate against sound shell
Body, earmuff and regulating mechanism three can be kept completely separate, convenient for disassembly and assembly, convenient for cleaning and maintenance.
In some embodiments, metal clips is helical form.The both ends of spiral helicine metal clips will not connect as a result,
It connects, but forms an opening, when regulation handle pushes metal clips, metal clips is to contract, converter inside space
It reduces, the final change for realizing sound field volume.
In some embodiments, adjuster is threadedly engaged with sound insulation cavity, and one end offsets with metal clips, adjuster
It is two.Regulation handle is two as a result, is respectively arranged at the upper and lower ends of converter, and adjuster is matched with sound insulation cavity screw thread
It closes, and one end offsets with metal clips, can make adjuster that metal clips be pushed to squeeze receipts to middle part by tightening adjuster
Contracting, can make metal clips extend to the outside reinstatement conversely, unscrewing adjuster, easy to adjust.
In some embodiments, the inner wall of sound insulation shell and earmuff is equipped with the first sound absorbing layer.First sound absorbing layer as a result,
Setting can be effectively isolated external noise and prevent the intracorporal test tone leakage of chamber.
In some embodiments, the second sound absorbing layer is equipped between metal clips and the inner wall for the cavity that insulates against sound.As a result, second
The setting of sound absorbing layer enhances the soundproof effect of regulating mechanism.
In some embodiments, the inner wall of metal clips is equipped with third sound absorbing layer.As a result, the setting of third sound absorbing layer into
One step enhances the soundproof effect of regulating mechanism.
In some embodiments, adjustable ear-shield type sound field audiometry device further includes sealing element, one end of sealing element
It is connect with earmuff, the other end covers at testee's ear periphery, and sealing element is annular air-pocket.Annular air-pocket inner hollow as a result,
Surface is made of compound flexible glue, and annular air-pocket is connect with earmuff, is in close contact when test with the ear of subject, annular air-pocket
Sealing element has good deadening.
Adjustable ear-shield type sound field audiometry device of the utility model can control metal clips by control regulator
In sound insulation cavity contract or stretching, extension, so that the volume of sound insulation cavity becomes smaller or larger, that is, changing sound insulation
The size of sound field spatial volume in shell realizes so that listening device can satisfy the test of different conditions in small sky
In the auditory acuity assessment, speech audiometry, children's hearing test, the measurement of function of hearing aid gain and effect assessment, artificial
The agile switching of the subjective behavioural audiometry project such as cochlea assessment；Different projects can be tested using the same device,
The insufficient and cumbersome of traditional sound field audiometry method is improved, testing efficiency and accuracy are improved；Simultaneously the apparatus structure it is simple,
It is small in size, without putting into large space and big fund, use and manufacturing cost are greatly reduced, marketing is facilitated.
Detailed description of the invention
Fig. 1 is the side, sectional view of adjustable ear-shield type sound field audiometry device of the utility model；
Fig. 2 is that the sound insulation cavity of adjustable ear-shield type sound field audiometry device shown in FIG. 1 faces schematic cross-section.
Appended drawing reference in Fig. 1~2: 1- sound insulation shell；2- earmuff；3- microphone device；4- regulating mechanism；5- sealing element；
The first sound absorbing layer of 6-；The second sound absorbing layer of 7-；8- third sound absorbing layer；41- sound insulation cavity；42- adjuster；43- metal clips.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
Fig. 1~2 schematically show a kind of adjustable ear-shield type sound field of embodiment according to the present utility model
Listening device.
As shown in Fig. 1~2, which includes sound insulation shell 1, earmuff 2, microphone device
3 and regulating mechanism 4.The sound insulation shell 1 of present embodiment is hemispherical, is equipped with firm banking, hair inside hemispherical sound insulation shell 1
Acoustic device 3 is fixedly installed on firm banking.The inner wall of sound insulation shell 1 is equipped with the first sound absorbing layer 6, and the first sound absorbing layer 6 fits in
The inner wall of sound insulation shell 1.First sound absorbing layer 6 of present embodiment is made of sound insulation or sound-absorbing material, above-mentioned sound insulation or sound-absorbing
Material can be one of acoustic tile, flexible glue or mandruka.Sound insulation shell 1 covers at the outer of microphone device 3 as a result,
Week, and the inner wall for the shell 1 that insulates against sound is equipped with the first sound absorbing layer 6, can be effectively isolated external noise and prevent the intracorporal test tone of chamber
Leakage.The microphone device 3 of present embodiment is test earphone, and microphone device 3 is connect with hearing test system, hearing test system
It controls microphone device 3 and issues the different voice signal of such as pure tone, sound of twitering, pulse sound, speech sound, narrow-band noise, musical sound, with
Carry out hearing test.One end of earmuff 2 is connect with sound insulation shell 1, and the other end covers at testee's ear periphery.
Regulating mechanism 4 includes sound insulation cavity 41, adjuster 42 and metal clips 43.Insulate against sound 41 both ends of cavity respectively with sound insulation
Shell 1 and earmuff 2 are detachably connected.It can be to be threadedly coupled or detain between sound insulation cavity 41 and sound insulation shell 1 or earmuff 2
The modes such as connection are closed to connect.It is insulated against sound as a result, to be detachably connected between shell 1,4 three of earmuff 2 and regulating mechanism, San Zheke
It is convenient for disassembly and assembly to be kept completely separate, convenient for cleaning and maintenance.The cavity 41 that insulates against sound be hollow structure and both ends respectively with sound insulation shell 1
It is connected with earmuff 2.Metal clips 43 is built in sound insulation cavity 41 and fits in the inner wall of sound insulation cavity 41, and the one of adjuster 42
End cooperates across sound insulation cavity 41 and metal clips 43.As shown in Figure 1, the middle part of the outer wall of the sound insulation cavity 41 of present embodiment
Adjuster mounting groove is offered, the inner wall of mounting groove is equipped with screw thread, and the outer wall of one end of adjuster 42 is equipped with screw thread, adjuster 42
It is threadedly engaged with sound insulation cavity 41.One end end of adjuster 42 offsets with metal clips 43.The adjuster 42 of present embodiment
For cylinder, and quantity is two.Two adjusters 42 are installed in mounting groove, and are set along the central symmetry of sound insulation cavity 41
It sets.Adjuster 42 is two as a result, is respectively arranged at the upper and lower ends of sound insulation cavity 41, adjuster 42 and sound insulation 41 spiral shell of cavity
Line cooperation, and one end offsets with metal clips 43, adjuster 42 can be made to push metal clips 43 by tightening adjuster 42
It squeezes and shrinks to middle part, metal clips 43 can be made to extend to the outside reinstatement conversely, unscrewing adjuster 42, it is easy to adjust.
The sound insulation cavity 41 of present embodiment is cylinder, and metal clips 43 is helical form.The two of spiral helicine metal clips 43 as a result,
End will not connect, but form an opening, when regulation handle pushes metal clips 43, metal clips 43 to contract,
Converter inside reduced space, the final change for realizing sound field volume.
It is equipped with the second sound absorbing layer 7 between metal clips 43 and the inner wall for the cavity 41 that insulates against sound, i.e. the second sound absorbing layer 7 is bonded respectively
In the inner wall of sound insulation cavity 41 and the outer wall of metal clips 43.The inside of metal clips 43 is equipped with third sound absorbing layer 8, and second inhales
Sound-absorbing layer 7, third sound absorbing layer 8 are identical as the structure of the first sound absorbing layer 6, are made by sound-absorbing or acoustic material.As a result,
The setting of two sound absorbing layers 7 and third sound absorbing layer 8 greatly strengthens the soundproof effect of regulating mechanism 4.
As shown in Figure 1, adjustable ear-shield type sound field audiometry device of present embodiment further includes sealing element 5.Sealing element 5
One end be adhesively fixed and connect with earmuff 2, the other end covers at testee's ear periphery.The sealing element 5 of present embodiment is ring
Shape air bag, annular air-pocket inner hollow, surface are made of compound flexible glue.Sealing element 5 and the ear of subject closely connect when test
The sealing element 5 of touching, annular air-pocket has good deadening.Annular air-pocket is equipped with aeration aperture, consequently facilitating the inflation of air bag
Or deflate and adjust, i.e. the adjusting of gas flow can carry out inflation/deflation to air bag according to different users.Increase the inflation of air bag
Amount, can make gasbag ektexine expand outwardly.The aeration quantity for reducing air bag, can make the outer wall of air bag to contract, in turn
Listening device is enabled to be suitble to the subject of different ear's sizes.
The earmuff of present embodiment is circle, and round earmuff covers testee's ear peripheral region, when the head with testee
When portion is close to, it can be effectively isolated external noise, form mute space around the ear of testee.Earmuff 2, sound insulation shell 1 with
And regulating mechanism 4 is two groups, when hearing test, is worn on the left and right sides of testee, respectively in order to the ears to testee
Carry out hearing detection.
The hood type sound field audiometry device of present embodiment is built between ear and test earphone 3 using sound insulation cavity 1
Stand an adjustable closed sound insulation space.Sealing element 5 is close to ear surrounding skin, and space is disposable in the shell 1 that insulates against sound surveys
Earphone 3 is tried, regulating mechanism 4, including sound insulation cavity 41, adjuster 42 and metal are provided between sealing element 5 and sound insulation shell 1
Elastic slice 43, sound insulation cavity 41 are hollow structure, and metal clips 43 is built in sound insulation cavity 41 and fits in the interior of sound insulation cavity 41
Wall, one end of adjuster 42 passes through sound insulation cavity 41 and metal clips 43 cooperates.By control regulator 42, metal can control
Elastic slice 43 in sound insulation 41 contract of cavity or stretching, extension, can under conditions of keeping that distance is constant between test earphone 3 and ear,
So that the volume of sound insulation cavity 41 becomes smaller or larger, so that listening device can satisfy the test of different conditions, use is same
Device can test different projects, improve the insufficient and cumbersome of traditional sound field audiometry method, improve test effect
Rate and accuracy.
The working principle of adjustable ear-shield type sound field audiometry device of present embodiment are as follows:
Regulating mechanism 4 can be adjusted according to the needs the volume of sound insulation cavity inner cavity, the hearing damage of volume size and subject
Hurt degree correlation.Hearing impairment degree is bigger, and stimulating sound intensity to be administered is also bigger, and interference is more easy to happen between sound wave,
The interference of sound wave in the cavity in order to prevent at this time can make sound-absorbing face become more, to reduce entrance by increasing the method for volume
The interference phenomenon of naked ear or the voice signal of ancillary equipment, it is ensured that the accuracy of test result.As shown in Fig. 2, present embodiment
Listening device increase volume method be by adjusting adjuster 42 be inserted into sound insulation cavity 41 depth, to control metal clips
43 flexible closure, and then change the inside diameter D of sound insulation cavity 41, i.e., the volume of sound insulation 41 internal cavity of cavity is adjusted
Section.Hearing impairment degree is bigger, the corresponding inside diameter D for increasing sound insulation cavity 41 increases sound insulation 41 internal cavity of cavity
Volume, conversely, then reduce sound insulation cavity inside diameter D.
Adjustable ear-shield type sound field audiometry device of present embodiment is suitable for having worn the tested of hearing aid device
Person tests.The subject for having worn hearing aid device needs to assess the listening effect before and after hearing aid fits, needs at this time
Threshold testing two tests after carrying out naked ear pure tone test and hearing aid to subject.Traditional test method is needed using two
Complete different mode is planted to be tested: 1, naked ear test need to be carried out in common soundproof room, worn conductance earphone and be measured；2,
Threshold testing after hearing aid then needs possessing to be that could measure using loudspeaker in 1 meter of sound field environment with ears distance.
The measurement result of above-mentioned test may be the threshold of audibility of ears rather than the threshold of audibility of monaural.
The test method of the ear-shield type listening device of present embodiment is different from traditional test method, concrete operation step
Are as follows:
S1, firstly, by understand subject basic condition, such as used in hearing aid power, the naked ear of subject
The prediction subject such as ability to exchange, the test result of early stage hearing level, determine the diameter of most suitable regulating mechanism 4.
S2, converter is adjusted to suitable inside diameter by adjuster 42, the sealing element 5 of listening device is shrouded completely
Ear and hearing aid periphery in subject, and the battery compartment of hearing aid is opened, so that hearing aid is not worked, it thus can be into
The naked ear of row tests.
After S3, naked ear are completed, listening device need to be slightly only opened, the battery compartment of hearing aid is closed, hearing aid is made
It works normally, then has covered listening device again, it can the threshold testing after carrying out hearing aid.
By this method, it needs only to need in original now using two kinds of complete different modes come the project tested originally
Two tests are carried out continuously in the even relatively quiet space in the lesser sound insulation room having by the same device.
The testing time is substantially reduced as a result, simplifies operating process, while greatly reducing investment and the cost used, is conducive to
Marketing.
4 inner hollow of regulating mechanism of above-mentioned adjustable ear-shield type sound field audiometry device, and inner wall is equipped with spiral ring
Metal clips 43 turns adjuster 42 by rotation, can control metal clips 43 accordingly and shrink or stretch, and then change
The internal capacity of regulating mechanism 4, that is, the size of the sound field spatial volume of listening device is changed, so that the utility model
Adjustable ear-shield type sound field audiometry device can satisfy the tests of different conditions, realize the auditory acuity in small space
Assessment, speech audiometry, children's hearing test, the measurement of function of hearing aid gain and effect assessment, artificial cochlea's assessment etc. are subjective
The agile switching of behavioural audiometry project, structure is simple, easy to adjust, and without putting into large space and big fund, greatly reducing makes
With cost, the insufficient and cumbersome of traditional sound field audiometry method is improved, testing efficiency and accuracy can be effectively improved.
Above-described is only some embodiments of the utility model.For those of ordinary skill in the art,
Without departing from the concept of the present invention, various modifications and improvements can be made, these belong to practical
Novel protection scope.
Claims (8)
1. adjustable ear-shield type sound field audiometry device, including sound insulation shell (1), earmuff (2) and microphone device (3), the hair
Acoustic device (3) is set in sound insulation shell (1) and connect with test macro, and one end of the earmuff (2) and sound insulation shell (1) are even
It connects, the other end covers at testee's ear periphery, which is characterized in that further include regulating mechanism (4), the regulating mechanism is set to
It insulates against sound shell (1) between earmuff (2), the regulating mechanism (4) includes sound insulation cavity (41), adjuster (42) and metal clips
(43), the sound insulation cavity (41) is hollow structure and both ends are connected with sound insulation shell (1) and earmuff (2) respectively, the gold
Belong to elastic slice (43) to be built in sound insulation cavity (41) and fit in the inner wall of sound insulation cavity (41), one end of the adjuster (42) is worn
Sound insulation cavity (41) and metal clips (43) are crossed to cooperate.
2. adjustable ear-shield type sound field audiometry device according to claim 1, which is characterized in that the sound insulation cavity
(41) both ends are detachably connected with sound insulation shell (1) and earmuff (2) respectively.
3. adjustable ear-shield type sound field audiometry device according to claim 1, which is characterized in that the metal clips
It (43) is helical form.
4. adjustable ear-shield type sound field audiometry device according to claim 1, which is characterized in that the adjuster (42)
It is threadedly engaged with sound insulation cavity (41), and one end offsets with metal clips (43), the adjuster (42) is two.
5. adjustable ear-shield type sound field audiometry device according to claim 1, which is characterized in that the sound insulation shell
(1) and the inner wall of earmuff (2) is equipped with the first sound absorbing layer (6).
6. adjustable ear-shield type sound field audiometry device according to claim 1, which is characterized in that the metal clips
(43) the second sound absorbing layer (7) are equipped between the inner wall of sound insulation cavity (41).
7. adjustable ear-shield type sound field audiometry device according to claim 1, which is characterized in that the metal clips
(43) inner wall is equipped with third sound absorbing layer (8).
8. described in any item adjustable ear-shield type sound field audiometry devices according to claim 1~7, which is characterized in that also wrap
It includes sealing element (5), one end of the sealing element (5) is connect with earmuff (2), and the other end covers at testee's ear periphery, described
Sealing element (5) is annular air-pocket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821338539.8U CN209153692U (en) | 2018-08-17 | 2018-08-17 | Adjustable ear-shield type sound field audiometry device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821338539.8U CN209153692U (en) | 2018-08-17 | 2018-08-17 | Adjustable ear-shield type sound field audiometry device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209153692U true CN209153692U (en) | 2019-07-26 |
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ID=67329687
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821338539.8U Active CN209153692U (en) | 2018-08-17 | 2018-08-17 | Adjustable ear-shield type sound field audiometry device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113099334A (en) * | 2020-01-08 | 2021-07-09 | 北京小米移动软件有限公司 | Configuration parameter determining method and device and earphone |
-
2018
- 2018-08-17 CN CN201821338539.8U patent/CN209153692U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113099334A (en) * | 2020-01-08 | 2021-07-09 | 北京小米移动软件有限公司 | Configuration parameter determining method and device and earphone |
| CN113099334B (en) * | 2020-01-08 | 2022-09-30 | 北京小米移动软件有限公司 | Configuration parameter determining method and device and earphone |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210907 Address after: 518000 Room 903, 9 / F, No. 54 and 56, Zhongshan Second Road, Yuexiu District, Guangzhou, Guangdong Patentee after: Guangzhou Shangting Medical Instrument Co.,Ltd. Address before: 528000 Room 201, block 13, 17 Yingyin Road, Chancheng District, Foshan City, Guangdong Province Patentee before: FOSHAN WEIER HEARING TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |