CN218352736U

CN218352736U - Miniature speaker test fixture

Info

Publication number: CN218352736U
Application number: CN202221841479.8U
Authority: CN
Inventors: 吴国侦; 周威龙; 郑君秀
Original assignee: Weishi Technology Co ltd
Current assignee: Weishi Technology Co ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2023-01-20
Anticipated expiration: 2032-07-18

Abstract

The utility model discloses a micro loudspeaker test tool, which comprises a base and a cover plate which are movably connected, wherein the base and the cover plate surround to form a holding cavity; a sound outlet communicated with the accommodating cavity is formed in one side wall of the base; a contact probe is arranged on the cover plate and extends into the accommodating cavity; and the inner wall surface of the accommodating cavity is provided with a clearance structure, and the clearance structure is arranged on the cover plate and/or the base. Placing the micro loudspeaker module to be tested in the accommodating cavity, and sealing the base through the cover plate, so that the baffle plate and the microphone can be matched at the sound outlet to test various properties of the micro loudspeaker module, such as air tightness, acoustic property, listening effect and the like; when the micro loudspeaker module to be tested is not completely sealed, the air leakage area is not blocked completely by the clearance structure, so that noise or acoustic performance reduction caused by air leakage can be accurately captured by the microphone, and the accuracy of a test result is improved.

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

At micro speaker's research and development and production stage, need test the gas tightness, acoustic performance, listening effect and the multiple performance of speaker usually, during the frock test, because of product technology is unusual easily, if the speaker module is not hit to glue, lead to the problem of gas leakage, at this moment, because the speaker module receives test fixture's apron and bottom plate extrusion, gas leakage department is by the shutoff, lead to the gas tightness test result of speaker module to the deviation appears, thereby cause and judge the speaker module mistake that the gas tightness is bad as the certified products.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the utility model provides a can promote miniature speaker test fixture of test result accuracy.

In order to solve the technical problem, the utility model discloses a technical scheme be: a micro-speaker test tool comprises a base and a cover plate which are movably connected, wherein the base and the cover plate surround to form an accommodating cavity; a sound outlet communicated with the accommodating cavity is formed in one side wall of the base; a contact probe is arranged on the cover plate and extends into the accommodating cavity; and the inner wall surface of the accommodating cavity is provided with a clearance structure, and the clearance structure is arranged on the cover plate and/or the base.

Further, the clearance structure is a groove or a through hole.

Furthermore, keep away the empty structure for seting up in annular on the base, still be equipped with the intercommunication on the base the rear chamber groove in holding chamber, keep away empty structure intercommunication the rear chamber groove.

Furthermore, a gasket is arranged on the inner wall surface of the accommodating cavity.

Furthermore, the cover plate is provided with a pressure relief hole communicated with the containing cavity.

Furthermore, one end of the cover plate is provided with a convex rotating part, and the base is provided with an installation groove matched with the rotating part; the mounting 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, 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 cavity, and the contact probe is arranged in the connecting hole.

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 loudspeaker module to be tested in the accommodating cavity, sealing the base through the cover plate, and testing various performances such as air tightness, acoustic performance, listening effect and the like of the micro loudspeaker module at the sound outlet by matching the baffle plate and the microphone; when the micro loudspeaker module to be tested is not completely sealed, the air leakage area is not blocked completely by the clearance structure, so that noise or acoustic performance reduction caused by air leakage can be accurately captured by the microphone, and the accuracy of a test result is improved.

Drawings

Fig. 1 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. 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 structural diagram of a base of the testing tool for a micro-speaker according to the first embodiment of the present invention.

Description of reference numerals:

1. a base; 11. a sound outlet; 12. a void-avoiding structure; 13. a rear cavity groove; 14. mounting grooves; 15. a limiting groove; 16. a second magnetic attraction member; 17. mounting holes;

2. a cover plate; 21. a pressure relief vent; 22. a rotating part; 23. a projection; 24. a first magnetic attraction piece; 25. connecting the bosses; 26. abutting against the boss;

3. contacting the probe;

4. a gasket;

5. a rotation pin;

6. a micro speaker module.

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 3, a micro speaker testing tool includes a base 1 and a cover plate 2 movably connected to each other, wherein the base 1 and the cover plate 2 surround to form an accommodating cavity; a sound outlet 11 communicated with the accommodating cavity is formed in one side wall of the base 1; a contact probe 3 is arranged on the cover plate 2, and the contact probe 3 extends into the accommodating cavity; the inner wall surface of the accommodating cavity is provided with a clearance structure 12, and the clearance structure 12 is arranged on the cover plate 2 and/or the base 1.

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 6 to be tested in the accommodating cavity, sealing the base 1 through the cover plate 2, and testing various performances such as air tightness, acoustic performance, listening effect and the like of the micro-speaker module 6 by matching the baffle plate and the microphone at the sound outlet 11; when the micro-speaker module 6 to be tested is not completely sealed, the air leakage area is completely not blocked by the clearance structure 12, so that noise or acoustic performance reduction caused by air leakage can be accurately captured by the microphone, and the accuracy of a test result is improved.

Further, the clearance structure 12 is a groove or a through hole.

As can be seen from the above description, the manufacturing personnel can select different forms of the clearance structure 12 according to the actual use requirement or the production condition.

Furthermore, keep away empty structure 12 for seting up in annular on the base 1, still be equipped with the intercommunication on the base 1 the back cavity groove 13 in holding chamber, keep away empty structure 12 intercommunication back cavity groove 13.

As can be seen from the above description, the clearance structure 12 is communicated with the rear cavity groove 13, so that the air flow of the micro-speaker module 6 to be tested during air leakage is smooth, the adverse effect caused by air leakage of the micro-speaker module 6 to be tested is clearer, the microphone is convenient to capture sound signals, and the accuracy of the test result is improved.

Furthermore, a gasket 4 is arranged on the inner wall surface of the accommodating cavity.

As can be seen from the above description, the gasket 4 can prevent the micro-speaker module 6 to be tested from being scratched or damaged due to too much pressing force.

Further, the cover plate 2 is provided with a pressure relief hole 21 communicated with the accommodating cavity.

According to the above description, when the micro speaker module 6 to be tested sounds in the accommodating cavity, the vibration of the diaphragm causes air flow, and the pressure relief hole 21 is formed to enable the air flow in the accommodating cavity to be smooth, so that the micro speaker module 6 can sound normally, and the accuracy of the test result is ensured.

Further, one end of the cover plate 2 is provided with a protruding rotating part 22, and the base 1 is provided with an installation groove 14 matched with the rotating part 22; a rotating pin 5 is arranged in the mounting groove 14, and a pin hole for the rotating pin 5 to pass through is arranged on the rotating part 22.

As can be seen from the above description, the cover plate 2 and the base 1 are rotatably connected through the matching of the rotating pin 5 and the pin hole, so that the cover plate 2 can rotate relative to the base 1, and the micro-speaker module 6 to be tested can be conveniently installed in or taken out of the accommodating cavity.

Furthermore, a protruding portion 23 is arranged at one end, away from the rotating portion 22, of the cover plate 2, and a limiting groove 15 matched with the protruding portion 23 is arranged on the base 1.

As can be seen from the above description, the protrusion 23 can be grasped by the user to apply a force to the cover 2, so that the cover 2 is rotated away from the base 1, and the protrusion 23 and the limiting groove 15 cooperate to prevent the cover 2 from moving unexpectedly after being closed.

Furthermore, a first magnetic attraction piece 24 is arranged on one surface of the protruding portion 23 close to the base 1, and a second magnetic attraction piece 16 matched with the first magnetic attraction piece 24 is arranged in the limiting groove 15.

It can be known from the above description that the cover plate 2 and the base 1 are matched and then the first magnetic attraction piece 24 is attracted by the second magnetic attraction piece 16, so that the relative position of the cover plate 2 and the base 1 is fixed, and the contact probe 3 on the cover plate 2 is aligned with the line board of the micro-speaker module 6 to be tested.

Furthermore, the cover plate 2 is far away from one side of the base 1 and is provided with a connecting boss 25, the connecting boss 25 is provided with a connecting hole communicated with the accommodating cavity, and the contact probe 3 is arranged in the connecting hole.

It can be known from the above description that the connection boss 25 can increase the length of the contact probe 3 inserted into the cover plate 2, and then reduce the angular deviation of the contact probe 3 caused by the external force, so that the contact probe 3 can be aligned with the line board of the micro-speaker module 6 to be tested.

Further, a plurality of mounting holes 17 are formed at intervals on the base 1.

As can be seen from the above description, the quick clamp can be mounted on the base 1 through the mounting hole 17 provided on the base 1.

Example one

Referring to fig. 1 to fig. 3, a first embodiment of the present invention is: a micro-speaker test tool is used for testing various performances of a micro-speaker module 6 such as air tightness, acoustic performance and listening effect.

The micro loudspeaker testing tool comprises a base 1 and a cover plate 2 which are movably connected, wherein the base 1 and the cover plate 2 surround to form an accommodating cavity; a sound outlet 11 communicated with the accommodating cavity is formed in one side wall of the base 1; a contact probe 3 is arranged on the cover plate 2, and the contact probe 3 extends into the accommodating cavity; the inner wall surface of the accommodating cavity is provided with a clearance structure 12, and the clearance structure 12 is arranged on the cover plate 2 and/or the base 1. Specifically, in this embodiment, the miniature speaker module 6 that awaits measuring includes the module shell of plastics material and accepts the speaker monomer in the module shell, sets up the window that supplies the speaker monomer to stretch out on the module shell, forms the annular rubber slot that is used for holding sealed glue between the interior border of speaker monomer and window. A ring groove is formed in the base 1 corresponding to the glue groove of the loudspeaker monomer, and the ring groove forms the clearance structure 12; the base 1 is further provided with a rear cavity groove 13 communicated with the accommodating cavity, and the annular groove is communicated with the rear cavity groove 13. The one side that the window was kept away from to the module shell still is equipped with the steel sheet through insert injection molding process, and the one side that apron 2 is close to base 1 is equipped with the conflict boss 26 that is used for conflicting miniature speaker module 6 that awaits measuring, and the contact gap between steel sheet edge and the plastic is avoided to conflict boss 26, promptly, and the part region on the apron 2 except that conflict boss 26 forms keep away empty structure 12. In other embodiments, the clearance structure 12 may be a through hole.

Preferably, as shown in fig. 2 and 3, a gasket 4 is further provided on an inner wall surface of the accommodating cavity. In this embodiment, the pad 4 is preferably made of foam. The gasket 4 is arranged on one surface of the cover plate 2, which is used for abutting against the micro-speaker module 6, of the abutting boss 26, and on one surface of the base 1, which is contacted with the micro-speaker module 6, of the inner side of the annular groove.

Preferably, as shown in fig. 1, a pressure relief hole 21 communicating with the accommodating cavity is formed in the cover plate 2. The pressure release hole 21 corresponds to the air release hole of the micro-speaker module 6, and the diameter of the pressure release hole 21 is larger than the diameter of the nylon mesh attached to the air release hole.

Preferably, as shown in fig. 1, a protruding rotating part 22 is arranged at one end of the cover plate 2, and an installation groove 14 matched with the rotating part 22 is arranged on the base 1; the installation groove 14 is internally provided with a rotating pin 5, and the rotating part 22 is provided with a pin hole for the rotating pin 5 to pass through, so that the cover plate 2 can smoothly rotate relative to the base 1, and the micro-speaker module 6 can be conveniently placed into or taken out of the accommodating cavity.

Preferably, as shown in fig. 1, a protruding portion 23 is disposed at an end of the cover plate 2 away from the rotating portion 22, and a limiting groove 15 matched with the protruding portion 23 is disposed on the base 1. The protrusion 23 cooperates with the limiting groove 15 to limit the relative position of the cover 2 and the base 1 after the cover 2 is closed, so as to prevent the cover 2 from moving unexpectedly after being closed. And the convex part 23 is arranged to protrude out of the side surface of the base 1, so that a user can conveniently hold the base.

As shown in fig. 2, a first accommodating groove is formed in one surface of the protruding portion 23 close to the base 1, and the first accommodating groove is provided with the first magnetic attraction piece 24; one side of the protruding portion 23 far away from the base 1 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 24 is ejected out and is convenient to replace. A second accommodating groove is formed in the bottom surface of the limiting groove 15, and a second magnetic attraction piece 16 matched with the first magnetic attraction piece 24 is arranged in the second accommodating groove; one side of the base 1, which is far away from the cover plate 2, is also provided with a second through hole communicated with the bottom surface of the second accommodating groove, so that the second magnetic attraction piece 16 is ejected out and is convenient to replace.

Preferably, as shown in fig. 1, a connecting boss 25 is arranged on one surface of the cover plate 2 away from the base 1, a connecting hole communicated with the accommodating cavity is arranged on the connecting boss 25, and the contact probe 3 is arranged in the connecting hole. In this embodiment, two contact probes 3 are provided, and are respectively conducted to the positive electrode and the negative electrode of the external power supply. The connecting boss 25 is correspondingly provided with two connecting holes.

Preferably, as shown in fig. 1, the base 1 is provided with a plurality of mounting holes 17 at intervals. In this embodiment, four mounting holes 17 are provided at intervals so that a quick clamp such as an elbow clamp can be screwed onto the base 1 to press the closed cover 2 against the base 1 and prevent the cover 2 from being undesirably moved during the test.

In summary, the micro-speaker testing tool provided by the utility model has a simple structure, and is beneficial to production operation; placing the micro loudspeaker module to be tested in the accommodating cavity, sealing the base through the cover plate, and testing various performances such as air tightness, acoustic performance, listening effect and the like of the micro loudspeaker module at the sound outlet by matching the baffle plate and the microphone; when the micro loudspeaker module to be tested is not completely sealed, the air leakage area is not blocked completely by the clearance structure, so that noise or acoustic performance reduction caused by air leakage can be accurately captured by the microphone, and the accuracy of a test result is improved. The gasket can prevent the micro-speaker module to be tested from being scratched or damaged due to too large extrusion force. When the miniature loudspeaker module that awaits measuring is the sound production in the holding chamber, the vibrating diaphragm vibration causes the air to flow, sets up the pressure release hole and can make the air flow in the holding chamber smooth and easy, makes the miniature loudspeaker module normal sound production, ensures the accuracy of test result. The cover plate and the base are rotatably connected through the matching of the rotating pin and the pin hole, so that the cover plate can rotate relative to the base, and the micro loudspeaker module to be tested is conveniently arranged in the accommodating cavity or taken out of the accommodating cavity. 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 matched with the base 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 align the contact probe on the cover plate with the line board of the micro loudspeaker module to be tested. Connect the boss and can increase the length that the contact probe inserted in the apron, and then reduce the contact probe and receive the exogenic action and the angular deflection that takes place, make the contact probe can be adjusted well with the line board that awaits measuring miniature speaker module.

The above mentioned is only the embodiment of the present invention, and the patent scope of the present invention is not limited thereby, and 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 device comprises a base and a cover plate which are movably connected, wherein the base and the cover plate surround to form an accommodating cavity; a sound outlet communicated with the accommodating cavity is formed in one side wall of the base; a contact probe is arranged on the cover plate and extends into the accommodating cavity; and the inner wall surface of the accommodating cavity is provided with a clearance structure, and the clearance structure is arranged on the cover plate and/or the base.

2. The micro-speaker test tool of claim 1, wherein: the clearance structure is a groove or a through hole.

3. The micro-speaker test tool according to claim 1, wherein: the base is provided with a circular groove, the base is further provided with a rear cavity groove communicated with the accommodating cavity, and the space-avoiding structure is communicated with the rear cavity groove.

4. The micro-speaker test tool of claim 1, wherein: and a gasket is also arranged on the inner wall surface of the accommodating cavity.

5. The micro-speaker test tool according to claim 1, wherein: the cover plate is provided with a pressure relief hole communicated with the accommodating cavity.

6. The micro-speaker test tool of claim 1, wherein: one end of the cover plate is provided with a convex rotating part, and the base is provided with an installation groove matched with the rotating part; the mounting 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.

7. The micro-speaker test tool of claim 6, wherein: the cover plate is provided with a rotating part, and the rotating part is arranged on the cover plate.

8. The micro-speaker test tool of claim 7, 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.

9. The micro-speaker test tool of claim 1, wherein: the cover plate is far away from one side of the base and is provided with a connecting boss, the connecting boss is provided with a connecting hole communicated with the accommodating cavity, and the contact probe is arranged in the connecting hole.

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