Miniature loudspeaker test tool

Abstract

The utility model discloses a miniature loudspeaker test tool, which comprises a base, a pressure plate, a first breathable separator, a second breathable separator and sound-absorbing particles, and is characterized in that the base is provided with a first placement groove; the base is covered with the pressing plate, the side, close to the base, of the pressing plate is provided with a second containing groove corresponding to the first containing groove, the first containing groove and the second containing groove define a containing cavity, the pressing plate is further provided with a rear cavity communicated with the second containing groove, the rear cavity is located on the side, away from the first containing groove, of the second containing groove, and a boss is arranged in the center of the rear cavity. A filling port communicated with the rear cavity is formed in the side, away from the base, of the pressing plate, and filling ports are formed in the two sides of the boss respectively; the first breathable separator is arranged at the filling port; the second breathable separator is arranged at the communication part of the second placing groove and the rear cavity; the rear cavity is filled with the sound-absorbing particles. And the sound-absorbing particles can better fill each corner position of the rear cavity, so that the micro loudspeaker test tool can exert a greater use value.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary tooling for testing electroacoustic devices, in particular to a testing tooling for a micro-speaker. Background Art

[0002] The testing tooling for a micro-speaker includes a bottom plate and a pressing plate covering the bottom plate. A placement groove for placing a speaker unit is provided between the bottom plate and the pressing plate. A rear cavity communicating with the placement groove is formed on the pressing plate, and a front cavity communicating with the placement groove is formed on the base.

[0003] In order to better simulate the influence of the addition of sound-absorbing particles on the performance of the speaker module, some testing toolings for micro-speakers are filled with sound-absorbing particles in the rear cavity. Specifically, a perfusion port communicating with the rear cavity is provided on the pressing plate. The tester pours the sound-absorbing particles into the rear cavity through the perfusion port, and then seals the perfusion port. However, since a pressing probe for pressing the speaker unit needs to be provided on the pressing plate, the central position of the rear cavity is occupied by the pressing probe. Therefore, the actual rear cavity of the testing tooling for a micro-speaker is generally in a ring frame shape, and generally only one perfusion port is opened and the perfusion port needs to deviate from the central position of the rear cavity. Therefore, the problem of insufficient powder filling often occurs at the corner positions of the rear cavity, especially at the corner of the rear cavity far from the perfusion port.

[0004] The disclosure of the above background art content is only used to assist in understanding the inventive concept and technical solution of the present invention. It does not necessarily belong to the prior art of this patent application. Without clear evidence indicating that the above content was publicly available on the filing date of this patent application, the above background art should not be used to evaluate the novelty and creativity of this application. Summary of the Utility Model

[0005] The technical problem solved by the utility model is to provide a testing tooling for a micro-speaker in which the rear cavity can be fully filled with sound-absorbing particles.

[0006] In order to solve the above technical problem, the technical solution adopted by the utility model is: a testing tooling for a micro-speaker, comprising:

[0007] A base, on which a first placement groove, a front cavity and a sound outlet are provided, and the front cavity communicates with the first placement groove and the sound outlet respectively;

[0008] A pressure plate that covers the base. One side of the pressure plate close to the base has a second placement groove corresponding to the first placement groove. After the pressure plate is connected to the base, the first placement groove and the second placement groove enclose a placement cavity for placing the speaker unit. The pressure plate is also provided with a rear cavity communicating with the second placement groove. The rear cavity is located on the side of the second placement groove away from the first placement groove. A boss is provided in the center of the rear cavity. An infusion port communicating with the rear cavity is provided on the side of the pressure plate away from the base. The infusion ports are respectively provided on both sides of the boss.

[0009] A first breathable separator that is provided at the infusion port and closes the infusion port.

[0010] A second breathable separator that is provided at the connection between the second placement groove and the rear cavity to separate the rear cavity from the second placement groove.

[0011] Sound-absorbing particles that fill the rear cavity.

[0012] In one embodiment, a pressure probe for the speaker unit is provided on the pressure plate, and the pressure probe penetrates through the boss.

[0013] In one embodiment, the second breathable separator has an avoidance hole, and the edge of the avoidance hole is connected to the boss.

[0014] In one embodiment, the end of the boss has an annular receiving groove, and the edge of the avoidance hole is received in the annular receiving groove.

[0015] In one embodiment, a subtractive blind hole is provided on the side of the pressure plate away from the base, and the infusion port is provided on the bottom surface of the subtractive blind hole.

[0016] In one embodiment, a sink is provided on the pressure plate communicating with the infusion port, and the first breathable separator is provided in the sink.

[0017] In one embodiment, a quick elbow clamp for pressing the pressure plate is provided on the base.

[0018] In one embodiment, a window communicating with the front cavity is provided on the side of the base away from the pressure plate, and a transparent partition is provided in the window.

[0019] In one embodiment, the transparent partition is an acrylic plate or a quartz glass plate.

[0020] In one embodiment, a conductive probe extending into the placement cavity is provided on the pressure plate, and the conductive probe is used to conduct electricity for the speaker unit.

[0021] The beneficial effects of the present utility model are as follows: The test fixture for the micro-speaker fully considers the actual structure of the rear cavity. The pressing plate has two filling ports communicating with the rear cavity, and the two filling ports are respectively located on both sides of the boss arranged at the central position of the rear cavity. When filling the sound-absorbing particles into the rear cavity through the two filling ports, the sound-absorbing particles can better fill each corner position of the rear cavity, thereby improving the phenomenon that the rear cavity is difficult to be fully filled, and facilitating the test fixture for the micro-speaker to exert greater use value. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0023] Figure 1 Structural schematic diagram of the test fixture for the micro-speaker in Embodiment 1 of the present utility model;

[0024] Figure 2 Cross-sectional view of a partial area of the test fixture for the micro-speaker in Embodiment 1 of the present utility model;

[0025] Figure 3 Structural schematic diagram of the pressing plate in the test fixture for the micro-speaker in Embodiment 1 of the present utility model.

[0026] Explanation of the reference numerals in the drawings:

[0027] 1. Base; 11. Front cavity; 12. Sound outlet; 13. Viewing window;

[0028] 2. Pressing plate; 21. Rear cavity; 22. Boss; 221. Annular receiving groove; 23. Filling port; 24. Subtractive blind hole; 25. Sunk groove;

[0029] 3. First breathable isolation member;

[0030] 4. Second breathable isolation member; 41. Avoidance hole;

[0031] 5. Pressing probe;

[0032] 6. Quick elbow clamp;

[0033] 7. Transparent partition;

[0034] 8. Conductive probe;

[0035] 9. Loudspeaker unit to be tested. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The realization of the purpose, functional features and advantages of the present utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.

[0037] 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 embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0038] It should be noted that if there are directional indications such as up, down, left, right, front, back... in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indications will also change accordingly.

[0039] In addition, if there are descriptions such as "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0040] In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "and / or" as an example, it includes the solution, or the solution, or the solution that satisfies both simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0041] In this application, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0042] Embodiment 1

[0043] Please refer to Figures 1 to 3, Embodiment 1 of the present utility model is: a micro speaker testing tooling, including a base 1, a pressing plate 2, a first breathable isolation member 3, a second breathable isolation member 4 and sound-absorbing particles. The base 1 is provided with a first placement groove, a front cavity 11 and a sound outlet 12. The front cavity 11 communicates with the first placement groove and the sound outlet 12 respectively. The pressing plate 2 covers the base 1. One side of the pressing plate 2 close to the base 1 has a second placement groove corresponding to the first placement groove. After the pressing plate 2 is connected to the base 1, the first placement groove and the second placement groove enclose a placement cavity for placing the speaker unit 9 to be tested. The pressing plate 2 is also provided with a rear cavity 21 communicating with the second placement groove. The rear cavity 21 is located on the side of the second placement groove away from the first placement groove. The sound-absorbing particles fill the rear cavity 21. A boss 22 is provided in the center of the rear cavity 21. The pressing plate 2 is provided with a pressing probe 5 for the speaker unit 9 to be tested. The pressing probe 5 penetrates through the boss 22. On the side of the pressing plate 2 away from the base 1, there is a perfusion port 23 communicating with the rear cavity 21. The perfusion ports 23 are respectively provided on both sides of the boss 22. The first breathable isolation member 3 is arranged at the perfusion port 23 and closes the perfusion port 23, so as to prevent the sound-absorbing particles in the rear cavity 21 from escaping through the perfusion port 23. The second breathable isolation member 4 is arranged at the communication place between the second placement groove and the rear cavity 21 to separate the rear cavity 21 from the second placement groove, so as to prevent the sound-absorbing particles from entering the placement cavity and polluting the speaker unit 9 to be tested.

[0044] Preferably, the number of the first breathable isolation members 3 is two, and the two first breathable isolation members 3 are arranged in one-to-one correspondence with the two perfusion ports 23.

[0045] The second breathable isolation member 4 can be a breathable mesh cloth, a waterproof breathable film, etc. Similarly, the first breathable isolation member 3 can be a breathable mesh cloth, a waterproof breathable film, etc. Since the first breathable isolation member 3 will be exposed, preferably, the first breathable isolation member 3 is a waterproof breathable film.

[0046] In order not to affect the pressing probe 5 pressing the speaker unit 9 to be tested, the second breathable isolation member 4 has an avoidance hole 41. The edge of the avoidance hole 41 is connected to the boss 22. The pressing head of the pressing probe 5 extends out from the end face of the boss 22 close to the placement cavity. That is to say, the avoidance hole 41 on the second breathable isolation member 4 can well avoid the pressing head of the pressing probe 5.

[0047] For the convenience of positioning and installing the second breathable isolation member 4 and the boss 22 and increasing the adhesive area between the second breathable isolation member 4 and the boss 22, in this embodiment, the end of the boss 22 has an annular receiving groove 221, and the edge of the avoidance hole 41 is received in the annular receiving groove 221.

[0048] In this embodiment, a subtractive blind hole 24 is provided on one side of the pressing plate 2 away from the base 1, and the pouring port 23 is provided on the bottom surface of the subtractive blind hole 24. The setting of the subtractive blind hole 24 can reduce the production consumables of the pressing plate 2 and lower the manufacturing cost of the micro-speaker testing tooling.

[0049] A sinking groove 25 communicating with the pouring port 23 is provided on the pressing plate 2, and the first breathable separator 3 is arranged in the sinking groove 25. The setting of the sinking groove 25 can facilitate the positioning and installation of the first breathable separator 3. At the same time, the sinking groove 25 can also play a role in protecting the first breathable separator 3 to a certain extent. Preferably, the depth of the sinking groove 25 is greater than or equal to the thickness of the first breathable separator 3. Optionally, the first breathable separator 3 is adhesively fixed to the pressing plate 2. In this embodiment, the sinking groove 25 is located on the inner bottom surface of the subtractive blind hole 24.

[0050] A quick-action toggle clamp 6 for pressing the pressing plate 2 is provided on the base 1, so that the pressing plate 2 and the base 1 are stably connected in contact. In an actual device, it is also possible that the pressing plate 2 and the base 1 are magnetically connected or snap-connected.

[0051] Optionally, a viewing window 13 communicating with the front cavity 11 is provided on one side of the base 1 away from the pressing plate 2. A transparent partition 7 is arranged in the viewing window 13, and the transparent partition 7 is an acrylic plate or a quartz glass plate.

[0052] A conductive probe 8 extending into the placement cavity is provided on the pressing plate 2, and the conductive probe 8 is used to conduct electricity for the speaker unit 9 to be tested located in the placement cavity.

[0053] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A micro-speaker test tooling, characterized in that: including a base on which a first placement groove, a front cavity and a sound outlet are provided, and the front cavity communicates with the first placement groove and the sound outlet respectively; a pressing plate covering the base, and a second placement groove corresponding to the first placement groove is provided on a side of the pressing plate close to the base. After the pressing plate is connected to the base, the first placement groove and the second placement groove enclose a placement cavity for placing a speaker unit. A rear cavity communicating with the second placement groove is further provided on the pressing plate. The rear cavity is located on a side of the second placement groove away from the first placement groove. A boss is provided at the center of the rear cavity. A perfusion port communicating with the rear cavity is provided on a side of the pressing plate away from the base. The perfusion ports are respectively provided on both sides of the boss; a first breathable separator provided at the perfusion port to close the perfusion port; a second breathable separator provided at the communication position between the second placement groove and the rear cavity to separate the rear cavity from the second placement groove; sound-absorbing particles filling the rear cavity.

2. The micro-speaker testing tooling according to claim 1, characterized in that: A pressing probe for the speaker unit is provided on the pressing plate, and the pressing probe penetrates through the boss.

3. The micro-speaker testing tooling according to claim 1, characterized in that: The second breathable separator has an avoidance hole, and the edge of the avoidance hole is connected to the boss.

4. The micro speaker testing tooling according to claim 3, characterized in that: An annular receiving groove is provided at the end of the boss, and the edge of the avoidance hole is received in the annular receiving groove.

5. The micro-speaker testing tooling according to claim 1, wherein: A subtractive blind hole is provided on a side of the pressing plate away from the base, and the perfusion port is provided on the bottom surface of the subtractive blind hole.

6. The micro-speaker testing tooling according to claim 1, characterized in that: A sink communicating with the perfusion port is provided on the pressing plate, and the first breathable separator is provided in the sink.

7. The micro-speaker testing tooling according to claim 1, wherein A quick elbow clamp for pressing the pressing plate is provided on the base.

8. The micro-speaker testing tooling according to claim 1, characterized in that, A window communicating with the front cavity is provided on a side of the base away from the pressing plate, and a transparent partition is provided in the window.

9. The micro-speaker testing tooling according to claim 8, characterized in that, The transparent partition is an acrylic plate or a quartz glass plate.

10. The micro-speaker testing tooling according to claim 1, characterized in that, A conductive probe extending into the placement cavity is provided on the pressing plate, and the conductive probe is used to conduct electricity for the speaker unit.

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