Acoustic testing device for mini-type MIC of earphone of acoustoelectric product
By designing a headphone micro MIC acoustic testing device including a soundproofing box, a MIC hole plug mechanism and an SPK module mechanism, the problems of low automation, poor working efficiency and accuracy in the prior art are solved, and more efficient and accurate test results are achieved.
Patent Information
- Application Number
- CN202421628198.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-07-10
AI Technical Summary
The existing headphone micro MIC acoustic testing device has low degree of automation, poor working efficiency and accuracy, and is easily disturbed by external sounds.
An acoustic testing device including a keyboard, a display, a soundproof box, a MIC hole blocking mechanism, a fixed vehicle mechanism and an SPK module mechanism are designed. Sound insulation is performed by sound insulation with sound insulation box and sound-absorbing cotton, and the EVA sponge is used to attenuate the sound source reflection, so as to achieve sealing and testing of the headphone MIC plate.
It improves the degree of automation of the test device, reduces labor intensity, improves testing efficiency and accuracy, and reduces the interference of external sounds on the test results.
Smart Images
Figure CN222967084U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of headphone testing, in particular to an acoustic testing device for a miniature MIC of a headphone of an electroacoustic product. Background Technique
[0002] A headphone is a device that receives electrical signals sent from a media player or receiver and converts them into audible sound waves using a speaker close to the ear. Usually, when headphones are produced, acoustic testing of the MIC (microphone) is required, and a testing device is needed during the testing.
[0003] Existing testing devices are all manually operated during testing, with a low degree of automation, increasing the labor intensity during the acoustic testing of the headphone miniature MIC and reducing the working efficiency of the testing device during testing; moreover, existing testing devices are easily interfered with by external sounds during testing, thus reducing the accuracy during testing and bringing great trouble to people's use. Summary of the Utility Model
[0004] The purpose of the utility model is to provide an acoustic testing device for a miniature MIC of a headphone of an electroacoustic product, so as to solve the problems of low automation degree and working efficiency of the existing testing device and poor accuracy during testing mentioned in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solution: an acoustic testing device for a miniature MIC of a headphone of an electroacoustic product, including a device table, on the surface of which a keyboard and a display component are installed, and the keyboard and the display component are used for the control and display work of the whole device; a sound insulation box is installed at the top of the device table, and the sound insulation box is composed of a lower box body, an upper cover body, a sound insulation inner liner, sound absorption cotton and an opening and closing cylinder. The lower box body is fixedly connected to the surface of the device table, and the upper cover body is hinged to the top of the lower box body through a hinge; protective mechanisms are respectively arranged on both sides of the sound insulation box, and the protective mechanisms are used for the protection work of the sound insulation box; a MIC hole plugging mechanism is installed inside the lower box body, and the MIC hole plugging mechanism is used for the front and back MIC sealing work of the headphone MIC electrode plate; a fixed carrier mechanism is installed on the surface of the MIC hole plugging mechanism, and the fixed carrier mechanism is used for the placement and clamping work of the product headphone, and a headphone to be tested is placed on the surface of the fixed carrier mechanism; an SPK module mechanism is also installed inside the upper cover body, and the SPK module mechanism is used for the testing work of the headphone to be tested.
[0006] Preferably, opening and closing cylinders are hinged to the left and right sides of the lower box body through hinge seats, and the output ends of the opening and closing cylinders are connected to the upper cover body through hinge seats; sound insulation inner liners are inlaid inside the lower box body and the upper cover body, and sound absorption cotton is laid inside the sound insulation inner liners.
[0007] Preferably, the protection mechanism includes a protection plate and a safety grating. There are two groups of protection plates, which are fixedly connected to the left and right sides of the device table. Safety gratings are installed on the surfaces of the protection plates, and the safety gratings are used for safety protection work.
[0008] Preferably, the MIC hole-blocking mechanism is composed of a frame body, a transverse movement cylinder, a hole-blocking frame, and a hole-blocking cylinder. The frame body is fixedly connected to the inside of the lower box body, and EVA sponges are adhesively fixed to the surface of the frame body.
[0009] Preferably, transverse movement cylinders are installed at both ends of the top of the frame body, and a hole-blocking frame is fixed to the output end of the transverse movement cylinder. Hole-blocking cylinders are fixed to both ends of the hole-blocking frame, and the hole-blocking cylinders are used for the front and rear MIC sealing of the headphone MIC electrode plates.
[0010] Preferably, the fixed carrier mechanism is composed of a fixing plate, a double-probe feeding carrier, and a pressing module. The fixing plate is fixedly connected to the surface of the frame body, and two groups of double-probe feeding carriers are installed on the surface of the fixing plate. The double-probe feeding carriers are used for placing the headphones to be tested; pressing modules are installed at both ends of the fixing plate, and the pressing modules are used for pressing the headphones to be tested.
[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: The acoustic testing device for the miniature MIC of the electroacoustic product headphone sets up a MIC hole-blocking mechanism, a fixed carrier mechanism, and an SPK module mechanism. During implementation, sound insulation is carried out through the sound insulation inner liner and sound-absorbing cotton arranged inside the lower box body and the upper cover body to prevent interference from external sounds during testing. Then, the headphones to be tested are pressed by the pressing module. Subsequently, the front and rear MICs of the left and right headphone MIC plates are sealed by the MIC hole-blocking mechanism. Its main function is to avoid the reflection interference phenomenon that occurs when the DUT tests THD&FR. Subsequently, the headphones to be tested are tested by the SPK module mechanism inside the lower box body. Since EVA sponges are mounted on the surface of the frame body, the sound source reflection caused by the sound emitted by the speaker during testing is attenuated by the EVA sponges, improving the acoustic testing accuracy; Therefore, the present utility model improves the automation degree of the testing device, does not require manual assistance during the testing process, reduces the labor intensity of the testing device during testing, and improves the working efficiency during the acoustic testing of the headphone miniature MIC; moreover, the present utility model can reduce the interference phenomenon of external sounds on the test results by setting up a sound insulation box and EVA sponges, thereby improving the accuracy during testing. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 is a three-dimensional external structure schematic diagram of the present utility model;
[0013] Figure 2Schematic diagram of the partial explosion structure of the present utility model;
[0014] Figure 3 Schematic diagram of the explosion structure of the sound insulation box of the present utility model;
[0015] Figure 4 Schematic diagram of the enlarged partial internal structure of the present utility model;
[0016] Figure 5 Schematic diagram of the enlarged explosion structure of the MIC hole-blocking mechanism of the present utility model;
[0017] Figure 6 Schematic diagram of the enlarged structure of the fixed carrier mechanism of the present utility model.
[0018] In the figure: 1. Device table; 11. Keyboard and display component; 2. Sound insulation box; 21. Lower box body; 22. Upper cover body; 23. Sound insulation inner liner; 24. Sound-absorbing cotton; 25. Opening and closing air cylinder; 3. Protection mechanism; 31. Protection plate; 32. Safety light curtain; 4. MIC hole-blocking mechanism; 41. Frame body; 411. EVA sponge; 42. Transverse moving air cylinder; 43. Hole-blocking frame; 44. Hole-blocking air cylinder; 5. Fixed carrier mechanism; 51. Fixed plate; 52. Double-probe feeding carrier; 53. Pressing module; 6. SPK module mechanism; 7. Headphone to be tested. Specific embodiments
[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. In addition, the terms "first", "second", "third", "upper, lower, left, right", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. At the same time, in the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.
[0020] The structure of an acoustic test device for a miniature MIC of a headphone of an electroacoustic product provided by the present utility model is as Figure 1 And Figure 3As shown in the figure, it includes a device table 1. A keyboard and display component 11 is installed on the surface of the device table 1, and this keyboard and display component 11 is used for the operation and display of the entire device. A soundproof box 2 is installed at the top of the device table 1, and the soundproof box 2 is composed of a lower box body 21, an upper cover body 22, a soundproof inner liner 23, sound-absorbing cotton 24, and an opening and closing cylinder 25. The lower box body 21 is fixedly connected to the surface of the device table 1, and the upper cover body 22 is hinged to the top of the lower box body 21 through a hinge. Both the left and right sides of the lower box body 21 are hinged to the opening and closing cylinder 25 through hinge seats, and the output end of the opening and closing cylinder 25 is connected to the upper cover body 22 through a hinge seat. Soundproof inner liners 23 are inlaid inside both the lower box body 21 and the upper cover body 22, and sound-absorbing cotton 24 is laid inside the soundproof inner liner 23. Protective mechanisms 3 are respectively arranged on both sides of the soundproof box 2, and this protective mechanism 3 is used for the protection of the soundproof box 2. The protective mechanism 3 includes a protective plate 31 and a safety light curtain 32. There are two groups of protective plates 31, and the two groups of protective plates 31 are fixedly connected to the left and right sides of the device table 1. Safety light curtains 32 are installed on the surfaces of the protective plates 31, and this safety light curtain 32 is used for safety protection work.
[0021] During implementation, the lower box body 21 and the upper cover body 22 are opened by the opening and closing cylinder 25. Then, the earphone to be tested 7 is placed in. After placement, the lower box body 21 and the upper cover body 22 are driven by the opening and closing cylinder 25 to close the cover. Sound insulation is carried out through the soundproof inner liner 23 and the sound-absorbing cotton 24 arranged inside the lower box body 21 and the upper cover body 22 to prevent interference caused by external sounds to the test.
[0022] Furthermore, as Figure 2 、 Figure 4 and Figure 5 shown, a MIC hole-blocking mechanism 4 is installed inside the lower box body 21, and this MIC hole-blocking mechanism 4 is used for the front and rear MIC sealing of the earphone MIC electrode plate. The MIC hole-blocking mechanism 4 is composed of a frame body 41, a transverse movement cylinder 42, a hole-blocking frame 43, and a hole-blocking cylinder 44. The frame body 41 is fixedly connected inside the lower box body 21, and an EVA sponge 411 is adhesively fixed on the surface of the frame body 41. Transverse movement cylinders 42 are installed at both ends of the top of the frame body 41, and the output end of the transverse movement cylinder 42 is fixed with a hole-blocking frame 43. Hole-blocking cylinders 44 are fixed at both ends of the hole-blocking frame 43, and this hole-blocking cylinder 44 is used for the front and rear MIC sealing of the earphone MIC electrode plate.
[0023] During implementation, the hole-blocking frame 43 is driven to move by the transverse movement cylinder 42 on the surface of the frame body 41. When the hole-blocking frame 43 moves, it will drive the hole-blocking cylinder 44 to move back and forth. Its main function is to avoid the reflection interference phenomenon that occurs when testing the DUT for THD&FR.
[0024] Furthermore, as Figure 4 and Figure 6As shown in the figure, a fixed carrier mechanism 5 is mounted on the surface of the MIC hole plugging mechanism 4. The fixed carrier mechanism 5 is used for placing and clamping the product earphones. The surface of the fixed carrier mechanism 5 places the earphones 7 to be tested. The fixed carrier mechanism 5 is composed of a fixed plate 51, a double-probe feeding carrier 52, and a pressing module 53. The fixed plate 51 is fixedly connected to the surface of the frame body 41, and two groups of double-probe feeding carriers 52 are mounted on the surface of the fixed plate 51. The double-probe feeding carrier 52 is used for placing the earphones 7 to be tested; pressing modules 53 are mounted at both ends of the fixed plate 51, and the pressing module 53 is used for pressing the earphones 7 to be tested; an SPK module mechanism 6 is also mounted inside the upper cover body 22, and the SPK module mechanism 6 is used for testing the earphones 7 to be tested.
[0025] During implementation, the earphones 7 to be tested are placed on the surface of the double-probe feeding carrier 52. When placing, the test points of the earphones 7 to be tested will contact the double probes on the double-probe feeding carrier 52, and the SPK module mechanism 6 inside the lower box body 21 is used to test the earphones 7 to be tested. Since the EVA sponge 411 is mounted on the surface of the frame body 41, the EVA sponge 411 is used to attenuate the sound source reflection caused by the speaker sounding during the test, improving the acoustic test accuracy.
[0026] Working principle: When in use, first, the lower box body 21 and the upper cover body 22 are opened by the opening and closing air cylinder 25. Subsequently, the earphones 7 to be tested are placed on the surface of the double-probe feeding carrier 52. When placing, the test points of the earphones 7 to be tested will contact the double probes on the double-probe feeding carrier 52. After placing, the lower box body 21 and the upper cover body 22 are driven by the opening and closing air cylinder 25 to close the cover. Sound insulation is carried out through the sound insulation inner liner 23 and the sound absorption cotton 24 arranged inside the lower box body 21 and the upper cover body 22 to prevent interference caused by external sounds to the test.
[0027] After placing, the earphones 7 to be tested are pressed by the pressing module 53. Subsequently, the MIC hole plugging mechanism 4 is used to seal the front and rear MICs of the MIC boards of the left and right earphones. When the MIC hole plugging mechanism 4 is implemented, the pushing plugging frame 43 is driven to move by the transverse movement air cylinder 42 on the surface of the frame body 41. When the plugging frame 43 moves, it will drive the plugging air cylinder 44 to move back and forth. Its main function is to avoid the reflection interference phenomenon that occurs when the DUT tests THD&FR.
[0028] Subsequently, the SPK module mechanism 6 inside the lower box body 21 is used to test the earphones 7 to be tested. Since the EVA sponge 411 is mounted on the surface of the frame body 41, the EVA sponge 411 is used to attenuate the sound source reflection caused by the speaker sounding during the test, improving the acoustic test accuracy. Finally, the use of the acoustic test device is completed.
[0029] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claimed rights involved.
Claims
1. An acoustic test device for a miniature MIC of an earphone of an acoustic and electrical product, comprising a device platform (1), characterized in that: The surface of the device platform (1) is provided with a keyboard and display assembly (11), which is used for the control and display of the entire device; a soundproof box (2) is provided at the top of the device platform (1), and the soundproof box (2) is composed of a lower box body (21), an upper cover body (22), a soundproof liner (23), sound-absorbing cotton (24), and an opening and closing cylinder (25); the lower box body (21) is fixedly connected to the surface of the device platform (1), and the top of the lower box body (21) is hingedly connected to the upper cover body (22) through a hinge; protective mechanisms (3) are respectively provided on both sides of the soundproof box (2), and the protective mechanisms (3) are respectively provided on the upper and lower sides of the soundproof box (2). The structure (3) is used for protecting the soundproof box (2); a MIC hole blocking mechanism (4) is installed inside the lower box body (21), and the MIC hole blocking mechanism (4) is used for sealing the front and rear MIC plates of the earphone; a fixed carrier mechanism (5) is installed on the surface of the MIC hole blocking mechanism (4), and the fixed carrier mechanism (5) is used for placing and clamping the product earphone, and the earphone to be tested (7) is placed on the surface of the fixed carrier mechanism (5); an SPK module mechanism (6) is also installed inside the upper cover body (22), and the SPK module mechanism (6) is used for testing the earphone to be tested (7).
2. The acoustic test device for a miniature MIC of an earphone of an acoustic and electrical product according to claim 1, characterized in that: The left and right sides of the lower box body (21) are both hingedly connected to an opening and closing cylinder (25) via a hinge seat, and the output end of the opening and closing cylinder (25) is connected to the upper cover body (22) via the hinge seat; the interior of the lower box body (21) and the upper cover body (22) are both inlaid with a sound insulation liner (23), and the interior of the sound insulation liner (23) is paved with sound absorbing cotton (24).
3. The acoustic test device for a miniature MIC of an earphone of an acoustic and electrical product according to claim 1, characterized in that: The protection mechanism (3) comprises a protection plate (31) and a safety grating (32). The protection plate (31) is provided in two groups. The two groups of protection plates (31) are fixedly connected to the left and right sides of the device platform (1). The surfaces of the protection plates (31) are both installed with safety gratings (32). The safety gratings (32) are used for safety protection work.
4. The acoustic test device for a miniature MIC of an earphone of an acoustic and electrical product according to claim 1, characterized in that: The MIC hole blocking mechanism (4) is composed of a frame (41), a transverse cylinder (42), a hole blocking frame (43) and a hole blocking cylinder (44); the frame (41) is fixedly connected to the inside of the lower box (21), and an EVA sponge (411) is adhesively fixed to the surface of the frame (41).
5. The acoustic test device for a miniature MIC of an earphone of an acoustic and electrical product according to claim 4, characterized in that: Both ends of the top of the frame (41) are equipped with a transverse cylinder (42), and the output end of the transverse cylinder (42) is fixed with a hole blocking frame (43), and both ends of the hole blocking frame (43) are fixed with a hole blocking cylinder (44), which is used for sealing the front and rear MICs of the earphone MIC plate.
6. The acoustic test device for a miniature MIC of an earphone of an acoustic and electrical product according to claim 1, characterized in that: The fixed carrier mechanism (5) is composed of a fixed plate (51), a double-probe material discharging carrier (52) and a pressing module (53); the fixed plate (51) is fixedly connected to the surface of the frame (41), and two sets of double-probe material discharging carriers (52) are installed on the surface of the fixed plate (51); the double-probe material discharging carriers (52) are used for placing the earphones (7) to be tested; and the pressing modules (53) are installed at both ends of the fixed plate (51); the pressing modules (53) are used for pressing the earphones (7) to be tested.