CN218416680U

CN218416680U - Miniature speaker test fixture

Info

Publication number: CN218416680U
Application number: CN202221909597.8U
Authority: CN
Inventors: 吴国侦; 周威龙; 农家权
Original assignee: Weishi Technology Co ltd
Current assignee: Weishi Technology Co ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2023-01-31
Anticipated expiration: 2032-07-20

Abstract

The utility model discloses a micro loudspeaker test tool, which comprises a baffle, a base and a cover plate, wherein the top surface of the base is provided with a containing groove which is communicated with the side surface of the base; the cover plate covers the top opening of the accommodating groove and is provided with a probe set extending into the accommodating groove; a first sealing ring is further arranged on one surface of the cover plate close to the base, and the first sealing ring is located on the inner side of the accommodating groove; the baffle covers the accommodating groove and is arranged at the side opening of the base, and the baffle is provided with a sound outlet communicated with the accommodating groove. Placing the micro-speaker module to be tested in the accommodating groove, and sealing the base by using the cover plate, so that the acoustic performance, the listening effect and other various performances of the micro-speaker module can be tested at the sound outlet by matching with the microphone; the cover plate can be matched with the first sealing ring to seal a window on the shell of the miniature loudspeaker module to be tested when being closed so as to simulate the front cavity of the miniature loudspeaker module to be tested in actual use.

Description

Miniature speaker test fixture

Technical Field

The utility model relates to an acoustics test equipment technical field especially relates to a miniature speaker test fixture.

Background

In the research and development and production stages of micro-speakers, various performances of the speakers, such as acoustic performance, listening effect and the like, need to be tested. Most of miniature speaker module is inside to have the ante-chamber, so during the test, only need to place the miniature speaker module that awaits measuring in the storage tank on apron and base, utilize the position of apron restriction miniature speaker module to accomplish the installation. However, some micro speaker modules (as shown in fig. 1) have a special structure, a window is disposed on a module housing corresponding to the diaphragm assembly, the window is sealed by the housing of the terminal device to form a front cavity, and the front cavity in the actual use process cannot be well simulated when the existing testing tool is used to test such micro speaker modules, which results in inaccurate testing results. In order to solve the above problems, it is necessary to develop a testing tool for a micro speaker with a new structure.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the utility model provides a miniature speaker test fixture of novel structure.

In order to solve the technical problem, the utility model discloses a technical scheme be: a micro loudspeaker test tool comprises a baffle, a base and a cover plate, wherein a containing groove is formed in the top surface of the base, and the containing groove is communicated with the side surface of the base; the cover plate covers the top opening of the accommodating groove and is provided with a probe set extending into the accommodating groove; a first sealing ring is further arranged on one surface of the cover plate close to the base, and the first sealing ring is located on the inner side of the accommodating groove; the baffle covers the storage tank is in the side opening of base just be equipped with on the baffle with the sound outlet of storage tank intercommunication.

Furthermore, a positioning column and a positioning pit matched with the positioning column are arranged on the contact surface of the base and the baffle.

Furthermore, a second sealing ring is arranged between the base and the baffle plate, the second sealing ring surrounds the opening of the accommodating groove on the side face of the base, and the first sealing ring is connected with the second sealing ring.

Further, be equipped with on the baffle and be used for contradicting the conflict boss of apron, seted up on the conflict boss the phonate hole, the second sealing washer is at least partial region to be located conflict boss with between the apron, conflict boss with the bottom of the contact surface of second sealing washer is towards inboard slope.

Further, the probe set includes a plurality of pressure probes and a plurality of contact probes.

Furthermore, one side of the cover plate, which is far away from the base, is provided with a connecting boss, the connecting boss is provided with a connecting hole communicated with the accommodating groove, and the contact probe is arranged in the connecting hole.

Furthermore, one end of the cover plate is provided with a protruding rotating part, and the base is provided with a groove matched with the rotating part; the groove is internally provided with a rotating pin, and the rotating part is provided with a pin hole for the rotating pin to pass through.

Furthermore, a protruding part is arranged at one end, far away from the rotating part, of the cover plate, and a limiting groove matched with the protruding part is arranged on the base.

Furthermore, one side of the protruding part, which is close to the base, is provided with a first magnetic attraction piece, and a second magnetic attraction piece matched with the first magnetic attraction piece is arranged in the limiting groove.

Furthermore, a plurality of mounting holes are formed in the base at intervals.

The beneficial effects of the utility model reside in that: the micro loudspeaker test tool is simple in structure and beneficial to production operation; placing the micro-speaker module to be tested in the accommodating groove, and sealing the base by using the cover plate, so that the acoustic performance, the listening effect and other various performances of the micro-speaker module can be tested at the sound outlet by matching with the microphone; the cover plate can be matched with the first sealing ring to seal a window on the shell of the miniature loudspeaker module to be tested when being closed, so that the front cavity of the miniature loudspeaker module to be tested in actual use is simulated, and the accuracy of a test result is ensured.

Drawings

Fig. 1 is a schematic structural diagram of a micro speaker module to be tested according to a first embodiment of the present invention;

fig. 2 is a schematic view of an overall structure of a testing tool for a micro-speaker according to a first embodiment of the present invention;

fig. 3 is a schematic view of a part of a structure of a testing tool for a micro-speaker according to a first embodiment of the present invention;

fig. 4 is an exploded view of a part of the structure of a testing tool for a micro-speaker according to a first embodiment of the present invention;

fig. 5 is a front view of a testing tool for a micro-speaker according to a first embodiment of the present invention;

FIG. 6 isbase:Sub>A cross-sectional view of section A-A of FIG. 5;

fig. 7 is a sectional view of section B-B in fig. 5.

Description of reference numerals:

1. a baffle plate; 11. a sound outlet; 12. a positioning column; 13. abutting against the boss;

2. a base; 21. a containing groove; 22. positioning the pits; 23. a groove; 24. a limiting groove; 25. a second magnetic attraction member; 26. mounting holes;

3. a cover plate; 31. connecting the bosses; 32. a rotating part; 33. a projection; 34. a first magnetic attraction member;

41. a first seal ring; 42. a second seal ring;

51. a pressure probe; 52. contacting the probe;

6. a rotation pin;

7. a micro speaker module is provided.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1 to 7, a micro-speaker testing tool includes a baffle 1, a base 2 and a cover plate 3, wherein a containing groove 21 is formed on the top surface of the base 2, and the containing groove 21 is communicated with the side surface of the base 2; the cover plate 3 covers the top opening of the accommodating groove 21, and a probe set extending into the accommodating groove 21 is arranged on the cover plate 3; a first sealing ring 41 is further arranged on one surface of the cover plate 3 close to the base 2, and the first sealing ring 41 is located on the inner side of the accommodating groove 21; the baffle 1 covers the accommodating groove 21 and is arranged at the side opening of the base 2, and the baffle 1 is provided with a sound outlet hole 11 communicated with the accommodating groove 21.

From the above description, the beneficial effects of the present invention are: the micro loudspeaker test tool is simple in structure and beneficial to production operation; placing the micro-speaker module 7 to be tested in the containing groove 21, and sealing the base 2 by using the cover plate 3, so that the acoustic performance, the listening effect and other various performances of the micro-speaker module 7 can be tested at the sound outlet 11 in cooperation with the microphone; when the cover plate 3 is closed, the first sealing ring 41 can be matched to seal a window on the shell of the micro loudspeaker module to be tested so as to simulate the front cavity of the micro loudspeaker module 7 to be tested in actual use, and the accuracy of a test result is ensured.

Furthermore, a positioning column 12 and a positioning pit 22 matched with the positioning column 12 are arranged on the contact surface of the base 2 and the baffle 1.

As can be seen from the above description, the positioning columns 12 and the positioning pits 22 can limit the relative position relationship between the base 2 and the baffle 1, so that the sound holes 11 are aligned with the openings of the accommodating grooves 21 on the side surfaces of the base 2, thereby ensuring accurate test results.

Further, a second sealing ring 42 is arranged between the base 2 and the baffle 1, the second sealing ring 42 surrounds the opening of the accommodating groove 21 on the side surface of the base 2, and the first sealing ring 41 is connected with the second sealing ring 42.

It can be known from the above description that the sealing performance of the sound outlet 11 can be improved by arranging the second sealing ring 42, and the first sealing ring 41 is connected with the second sealing ring 42, so that the micro-speaker testing tool can be conveniently assembled.

Further, be equipped with on the baffle 1 and be used for contradicting the conflict boss 13 of apron 3, seted up on the conflict boss 13 the phonate hole 11, second sealing washer 42 at least part region is located conflict boss 13 with between the apron 3, conflict boss 13 with the bottom of second sealing washer 42's contact surface is inboard slope.

It can be known from the above description that, after the base 2 is installed with the baffle 1 in a matching manner, the cover plate 3 and the baffle 1 will extrude the second sealing ring 42 located on the abutting boss 13 under the limiting effect of the positioning column 12 and the positioning concave pit 22, so as to enhance the sealing effect of the second sealing ring 42, and thus improve the accuracy of the test result.

Further, the probe set includes a plurality of pressure probes 51 and a plurality of contact probes 52.

As can be seen from the above description, the pressure probe 51 can be used to test the acoustic performance of the micro-speaker module 7, and the contact probe 52 is used to send an operating electrical signal to the micro-speaker module 7 in the accommodating slot 21.

Furthermore, a connecting boss 31 is arranged on one surface, far away from the base 2, of the cover plate 3, a connecting hole communicated with the accommodating groove 21 is formed in the connecting boss 31, and the contact probe 52 is arranged in the connecting hole.

As can be seen from the above description, the connection boss 31 can increase the length of the contact probe 52 inserted into the cover plate 3, thereby reducing the angular deviation of the contact probe 52 caused by the external force, so that the contact probe 52 can be aligned with the line board of the micro-speaker module 7 to be tested.

Furthermore, one end of the cover plate 3 is provided with a protruding rotating part 32, and the base 2 is provided with a groove 23 matched with the rotating part 32; a rotating pin 6 is arranged in the groove 23, and a pin hole for the rotating pin 6 to pass through is arranged on the rotating part 32.

As can be seen from the above description, the cover plate 3 and the base 2 are rotatably connected through the matching of the rotating pin 6 and the pin hole, so that the cover plate 3 can rotate relative to the base 2, and the micro-speaker module 7 to be tested can be conveniently installed in the containing slot 21 or taken out of the containing slot 21.

Furthermore, a protruding portion 33 is disposed at an end of the cover plate 3 away from the rotating portion 32, and a limiting groove 24 matched with the protruding portion 33 is disposed on the base 2.

As can be seen from the above description, the protrusion 33 can be grasped by the user to apply a force to the cover plate 3, so that the cover plate 3 is rotated away from the base 2, and the protrusion 33 and the limiting groove 24 cooperate to prevent the cover plate 3 from moving unexpectedly after being closed.

Furthermore, a first magnetic attraction piece 34 is arranged on one surface of the protruding portion 33 close to the base 2, and a second magnetic attraction piece 25 matched with the first magnetic attraction piece 34 is arranged in the limiting groove 24.

As can be seen from the above description, after the cover plate 3 is closed, the first magnetic attraction member 34 is attracted by the second magnetic attraction member 25, so as to fix the relative position between the cover plate 3 and the base 2, and align the contact probe 52 and the pressure probe 51 on the cover plate 3 with the preset position of the micro-speaker module 7 to be tested.

Further, a plurality of mounting holes 26 are formed at intervals on the base 2.

As can be seen from the above description, the micro-speaker testing tool can be installed on the automatic testing equipment through the plurality of mounting holes 26, so that the testing process of the micro-speaker module 7 is automatically completed through the automatic testing equipment, and the testing efficiency is further improved while the labor is saved.

Example one

Referring to fig. 1 to 7, a first embodiment of the present invention is: a micro loudspeaker test tool is used for testing various performances such as acoustic performance, listening effect and the like of a micro loudspeaker module 7.

The micro-speaker testing tool comprises a baffle plate 1, a base 2 and a cover plate 3, wherein a containing groove 21 is formed in the top surface of the base 2, and the containing groove 21 is communicated with the side surface of the base 2; the cover plate 3 covers the top opening of the accommodating groove 21, and a probe set extending into the accommodating groove 21 is arranged on the cover plate 3; a first sealing ring 41 is further arranged on one surface of the cover plate 3 close to the base 2, and the first sealing ring 41 is located on the inner side of the accommodating groove 21; the baffle 1 covers the accommodating groove 21 and is arranged at the side opening of the base 2, and the baffle 1 is provided with a sound outlet hole 11 communicated with the accommodating groove 21. Specifically, the miniature speaker module 7 that awaits measuring includes the module shell of plastics material and accepts the speaker monomer in the module shell, and the window has been seted up to the free vibrating diaphragm subassembly of corresponding speaker on the module shell, and first sealing washer 41 encircles the window sets up. In this embodiment, the first gasket 41 is preferably made of foam.

Preferably, as shown in fig. 3, 4 and 7, a positioning column 12 and a positioning pit 22 matched with the positioning column 12 are arranged on the contact surface of the base 2 and the baffle 1. In this embodiment, the positioning column 12 is disposed on the baffle 1, and the positioning pit 22 is disposed on the base 2; the number of the positioning columns 12 and the number of the positioning pits 22 are arranged in a one-to-one correspondence manner, and two ends of the side surface of the base 2 are respectively provided with one positioning pit 22.

Preferably, as shown in fig. 4 and 6, a second sealing ring 42 is disposed between the base 2 and the baffle 1, the second sealing ring 42 surrounds the opening of the accommodating groove 21 on the side surface of the base 2, and the first sealing ring 41 is connected to the second sealing ring 42, so as to facilitate the assembly of the micro-speaker testing tool.

Preferably, as shown in fig. 4 and 6, a collision boss 13 for colliding with the cover plate 3 is arranged on the baffle plate 1, the sound outlet hole 11 is formed in the collision boss 13, at least a partial region of the second seal ring 42 is arranged between the collision boss 13 and the cover plate 3, and the bottom end of the contact surface of the collision boss 13 and the second seal ring 42 inclines towards the inner side. Specifically, in this embodiment, the cross section of the interference boss 13 is triangular, the sound outlet 11 is formed between the side surface of the baffle plate 1 and the inclined surface of the interference boss 13, and the upper portion of the second sealing ring 42 is located between the inclined surface of the interference boss 13 and the cover plate 3; the positioning column 12 is arranged below the abutting lug boss 13. It is easy to understand that, after the positioning column 12 on the baffle 1 is matched with the positioning concave pit 22 on the base 2, the relative height position between the base 2 and the baffle 1 is limited, and the cover plate 3 covering the base 2 extrudes the second sealing ring 42 arranged on the inclined surface of the abutting convex table 13, so as to enhance the sealing effect at the second sealing ring 42.

As shown in fig. 2 and 3, the probe set includes a plurality of pressure probes 51 and a plurality of contact probes 52. Specifically, two pressure probes 51 are provided; the plurality of contact probes 52 are divided into a plurality of groups, each group having two contact probes 52 respectively connected to and conducted with the positive and negative electrodes of the external power source.

Preferably, as shown in fig. 2, a connecting boss 31 is disposed on a surface of the cover plate 3 away from the base 2, a connecting hole communicated with the accommodating groove 21 is disposed on the connecting boss 31, and the contact probe 52 is disposed in the connecting hole. Specifically, the number of the connection holes corresponds one-to-one to the number of the contact probes 52.

Preferably, as shown in fig. 2, 3 and 7, one end of the cover plate 3 is provided with a protruding rotating part 32, and the base 2 is provided with a groove 23 matched with the rotating part 32; the groove 23 is internally provided with a rotating pin 6, and the rotating part 32 is provided with a pin hole for the rotating pin 6 to pass through, so that the cover plate 3 can rotate relative to the base 2, and the micro-speaker module 7 can be conveniently placed in the accommodating groove 21 or taken out of the accommodating groove 21.

Preferably, as shown in fig. 3, a protruding portion 33 is disposed at an end of the cover plate 3 away from the rotating portion 32, and a limiting groove 24 matched with the protruding portion 33 is disposed on the base 2. The protrusion 33 cooperates with the limiting groove 24 to limit the relative position of the cover 3 and the base 2 after the cover 3 is closed, so as to prevent the cover 3 from moving unexpectedly after being closed. And the protrusion 33 protrudes from the side of the base 2 to facilitate the user to grip.

Preferably, as shown in fig. 3, a first accommodating groove is formed in one surface of the protruding portion 33 close to the base 2, and the first magnetic attraction piece 34 is arranged in the first accommodating groove; one side of the protruding portion 33 far away from the base 2 is further provided with a first through hole communicated with the bottom surface of the first accommodating groove, so that the first magnetic attraction piece 34 is ejected out and is convenient to replace. A second accommodating groove is formed in the bottom surface of the limiting groove 24, and a second magnetic attraction piece 25 matched with the first magnetic attraction piece 34 is arranged in the second accommodating groove; the base 2 is kept away from the one side of apron 3 still is equipped with the intercommunication the second through-hole of second accommodation groove bottom surface to in with piece 25 ejecting, the convenient change is inhaled to the second magnetism.

Preferably, as shown in fig. 2, a plurality of mounting holes 26 are formed in the base 2 at intervals, and hole sites are respectively formed in four corners of the baffle 1, so that the base 2 and the baffle 1 can be connected with automatic test equipment, and then the micro-speaker test tool is assembled and disassembled through the automatic test equipment, so that the test flow of the micro-speaker module 7 is automatically performed, and the test efficiency is further improved.

To sum up, the miniature loudspeaker testing tool provided by the utility model has a simple structure, and is beneficial to production operation; placing the micro-speaker module to be tested in the accommodating groove, and sealing the base by using the cover plate, so that the microphone can be matched with the sound outlet to test various properties such as acoustic property, audition effect and the like of the micro-speaker module; the cover plate can be matched with the first sealing ring to seal a window on the shell of the miniature loudspeaker module to be tested when being closed, so that the front cavity of the miniature loudspeaker module to be tested in actual use is simulated, and the accuracy of a test result is ensured. The positioning columns and the positioning pits can limit the relative position relation between the base and the baffle plate, so that the sound outlet holes are aligned with the openings of the accommodating groove on the side face of the base, and the accuracy of a test result is ensured. The second sealing ring can improve the sealing performance of the sound hole, and the first sealing ring is connected with the second sealing ring, so that the miniature loudspeaker testing tool can be conveniently assembled. After the base is installed in cooperation with the baffle, the cover plate and the baffle extrude the second sealing ring on the boss in a butting mode under the limiting effect of the positioning column and the positioning pit, so that the sealing effect of the second sealing ring is enhanced, and the accuracy of a test result is improved. The connection boss can increase the length that the contact probe inserted in the apron, and then reduces the contact probe and receives the external force effect and the angular deflection that takes place, makes the contact probe can adjust well with the line board of the miniature speaker module that awaits measuring. The bulge can be convenient for a user to hold and hold so as to apply force to the cover plate, so that the cover plate is rotationally far away from the base, and the bulge is matched with the limiting groove to prevent the cover plate from generating unexpected movement after being closed. The cover plate is closed and then adsorbs the first magnetic attraction piece through the second magnetic attraction piece so as to fix the relative position of the cover plate and the base, and the contact probe and the pressure probe on the cover plate are aligned with the preset position of the micro loudspeaker module to be tested.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a miniature speaker test fixture which characterized in that: the baffle plate comprises a baffle plate, a base and a cover plate, wherein the top surface of the base is provided with a containing groove, and the containing groove is communicated with the side surface of the base; the cover plate covers the top opening of the accommodating groove and is provided with a probe set extending into the accommodating groove; a first sealing ring is further arranged on one surface of the cover plate close to the base, and the first sealing ring is located on the inner side of the accommodating groove; the baffle covers the accommodating groove and is arranged at the side opening of the base, and the baffle is provided with a sound outlet communicated with the accommodating groove.

2. The micro-speaker test tool of claim 1, wherein: and a positioning column and a positioning pit matched with the positioning column are arranged on the contact surface of the base and the baffle.

3. The micro-speaker test tool of claim 2, wherein: and a second sealing ring is arranged between the base and the baffle, the second sealing ring surrounds the opening on the side surface of the base of the accommodating groove, and the first sealing ring is connected with the second sealing ring.

4. The micro-speaker test tool of claim 3, wherein: be equipped with on the baffle and be used for contradicting the conflict boss of apron, seted up on the conflict boss the phonate hole, the second sealing washer is at least partial region to be located conflict boss with between the apron, conflict boss with the bottom of the contact surface of second sealing washer is inboard slope.

5. The micro-speaker test tool of claim 1, wherein: the probe set includes a plurality of pressure probes and a plurality of contact probes.

6. The micro-speaker test tool of claim 5, wherein: the cover plate is provided with a connecting boss at one side far away from the base, the connecting boss is provided with a connecting hole communicated with the accommodating groove, and the contact probe is arranged in the connecting hole.

7. The micro-speaker test tool according to claim 1, wherein: one end of the cover plate is provided with a convex rotating part, and the base is provided with a groove matched with the rotating part; the groove is internally provided with a rotating pin, and the rotating part is provided with a pin hole for the rotating pin to pass through.

8. The micro-speaker test tool of claim 7, wherein: the cover plate is provided with a protruding portion at one end far away from the rotating portion, and the base is provided with a limiting groove matched with the protruding portion.

9. The micro-speaker test tool of claim 8, wherein: the protruding part is provided with a first magnetic attraction piece on one side close to the base, and a second magnetic attraction piece matched with the first magnetic attraction piece is arranged in the limiting groove.

10. The micro-speaker test tool of claim 1, wherein: a plurality of mounting holes are formed in the base at intervals.