Miniature loudspeaker test tool

Abstract

The utility model discloses a miniature loudspeaker test tool, which comprises a base, a pressure plate, a breathable separator, a cover plate and sound absorption particles, and is characterized in that the base is provided with a first placing groove, a front cavity and a sound outlet, and the front cavity is respectively communicated with the first placing groove and the sound outlet; the pressing plate covers the base, a second containing groove is formed in the side, close to the base, of the pressing plate, and a rear cavity communicated with the second containing groove is formed in the side, away from the base, of the pressing plate. The breathable separator is arranged at the communication part of the second placing groove and the rear cavity; the cover plate is located on the side, away from the base, of the pressing plate, the cover plate is detachably connected with the pressing plate and seals the rear cavity, and a protruding part is arranged on the cover plate and located in the rear cavity; and the sound-absorbing particles are arranged in the rear cavity. The miniature loudspeaker test tool provided by the utility model is novel in structure, can assist in testing the influence on the sound production performance of the miniature loudspeaker when the rear cavity is loaded with sound-absorbing particles with different volumes under different volumes, and greatly improves the universality of the miniature loudspeaker test tool, thereby reducing the test cost.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary tooling for testing electro-acoustic 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 placing groove for placing a speaker unit is arranged between the bottom plate and the pressing plate. During actual testing, the testing tooling for a micro speaker can be regarded as a module housing to some extent, and it and the speaker unit together form a speaker module.

[0003] However, the structure of the existing testing tooling for a micro speaker is fixed. Therefore, the volume of the rear cavity is also fixed. Testers cannot test the influence of the rear cavity on the sound performance of the micro speaker when loading sound-absorbing particles of different volumes at different volumes, and there are certain application limitations. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a testing tooling for a micro speaker with a new structure, which can assist in testing the sound performance of the rear cavity of the speaker unit under different volumes and when loaded with sound-absorbing particles of different volumes.

[0005] To solve the above technical problem, the technical solution adopted by the utility model is: a testing tooling for a micro speaker, including:

[0006] A base, on which a first placing groove, a front cavity and a sound outlet are arranged, and the front cavity communicates with the first placing groove and the sound outlet respectively;

[0007] A pressing plate, which covers the base. The side of the pressing plate close to the base has a second placing groove corresponding to the first placing groove, and a rear cavity communicating with the second placing groove is arranged on the side of the pressing plate far from the base; after the pressing plate is connected to the base, the first placing groove and the second placing groove surround and form a placing cavity for placing a speaker unit;

[0008] A breathable separator, which is arranged at the communication part between the second placing groove and the rear cavity to separate the rear cavity from the second placing groove;

[0009] A cover plate, which is located on the side of the pressing plate far from the base, is detachably connected to the pressing plate and closes the rear cavity. A protruding part is arranged on the cover plate, and the protruding part is located in the rear cavity;

[0010] Sound-absorbing particles, which are arranged in the rear cavity.

[0011] Further, an annular step for supporting the cover plate is provided at one end of the rear cavity away from the second placement groove.

[0012] Further, a sealing ring that abuts against the cover plate is provided on the annular step.

[0013] Further, the protruding part is detachably connected to the cover plate.

[0014] Further, the cover plate is connected to the pressure plate by screws or snap connection.

[0015] Further, a quick-action toggle clamp for pressing against the pressure plate is provided on the base.

[0016] Further, an observation window communicating with the front cavity is provided on one side of the base away from the pressure plate, and a transparent partition is provided in the observation window.

[0017] Further, the transparent partition is an acrylic plate or a quartz glass plate.

[0018] Further, 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.

[0019] Further, a pressing probe extending into the placement cavity is provided on the pressure plate, and the pressing probe is used to press against the speaker unit.

[0020] The beneficial effects of the present utility model are as follows: The structure of this micro-speaker testing tooling is novel. The amount of sound-absorbing particles in the rear cavity can be set as required, that is, the total volume of the sound-absorbing particles can be adjusted. The intrusion of the protruding part on the cover plate into the rear cavity can change the volume of the rear cavity, so that the micro-speaker testing tooling can assist in testing the influence of the sound-emitting performance of the micro-speaker when the rear cavity loads different volumes of sound-absorbing particles at different volumes, greatly improving the versatility of the micro-speaker testing tooling, thereby reducing the testing cost. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the micro-speaker testing tooling according to Embodiment 1 of the present utility model;

[0022] Figure 2 It is a cross-sectional view of the micro-speaker testing tooling according to Embodiment 1 of the present utility model;

[0023] Figure 3 It is a schematic structural diagram of the cover plate in the micro-speaker testing tooling according to Embodiment 1 of the present utility model.

[0024] Label Description:

[0025] 1. Base; 11. Front cavity; 12. Sound outlet; 13. Observation window;

[0026] 2. Pressure plate; 21. Rear cavity;

[0027] 3. Breathable separator;

[0028] 4. Cover plate; 41. Protrusion;

[0029] 5. Sealing ring;

[0030] 6. Quick elbow clamp;

[0031] 7. Transparent partition;

[0032] 8. Conductive probe;

[0033] 9. Pressing probe. Specific implementation mode

[0034] To describe in detail the technical content, achieved purpose and effect of the present utility model, the following is described in conjunction with the implementation mode and with reference to the accompanying drawings.

[0035] Please refer to Figures 1 to 3 , a micro speaker test tooling, comprising:

[0036] Base 1, on which a first placement groove, a front cavity 11 and a sound outlet 12 are provided, and the front cavity 11 communicates with the first placement groove and the sound outlet 12 respectively;

[0037] Pressure plate 2, which covers the base 1, and a second placement groove corresponding to the first placement groove is provided on one side of the pressure plate 2 close to the base 1, and a rear cavity 21 communicating with the second placement groove is provided on the side of the pressure plate 2 far from the base 1; after the pressure plate 2 is connected to the base 1, the first placement groove and the second placement groove enclose a placement cavity for placing a speaker unit;

[0038] Breathable separator 3, which 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;

[0039] Cover plate 4, which is located on the side of the pressure plate 2 far from the base 1, and the cover plate 4 is detachably connected to the pressure plate 2 and closes the rear cavity 21, and a protrusion 41 is provided on the cover plate 4, and the protrusion 41 is located in the rear cavity 21;

[0040] Sound-absorbing particles, which are arranged in the rear cavity 21.

[0041] As can be seen from the above description, the beneficial effects of the present utility model are as follows: The structure of the test tooling for the micro-speaker is novel. The amount of sound-absorbing particles in the rear cavity 21 can be set as required, that is, the total volume of the sound-absorbing particles can be adjusted. The protrusion 41 on the cover plate 4 invading the rear cavity 21 can change the volume of the rear cavity 21, so that the test tooling for the micro-speaker can assist in testing the influence of the sound-emitting performance of the micro-speaker when the rear cavity 21 is loaded with different volumes of sound-absorbing particles at different volumes, greatly improving the versatility of the test tooling for the micro-speaker, thereby reducing the test cost.

[0042] Further, a ring-shaped step for supporting the cover plate 4 is provided at one end of the rear cavity 21 away from the second placement groove.

[0043] As can be seen from the above description, the cover plate 4 can be partially received in the rear cavity 21, which can facilitate the positioning and installation of the cover plate 4 and the pressing plate 2.

[0044] Further, a sealing ring 5 that abuts against the cover plate 4 is provided on the ring-shaped step.

[0045] As can be seen from the above description, the cover plate 4 and the pressing plate 2 can be hermetically connected through the sealing ring 5, thereby improving the accuracy of the test results.

[0046] Further, the protrusion 41 is detachably connected to the cover plate 4.

[0047] As can be seen from the above description, the same cover plate 4 can be replaced with protrusions 41 of different volumes to change the volume of the rear cavity 21. Compared with directly replacing the entire cover plate 4, the usage amount of production consumables is effectively reduced.

[0048] Further, the cover plate 4 and the pressing plate 2 are connected by screws or snap connections.

[0049] As can be seen from the above description, there are various specific ways to achieve the detachable connection between the cover plate 4 and the pressing plate 2 for selection.

[0050] Further, a quick-action toggle clamp 6 for pressing the pressing plate 2 is provided on the base 1.

[0051] Further, an observation window 13 communicating with the front cavity 11 is provided on one side of the base 1 away from the pressing plate 2, and a transparent partition 7 is provided in the observation window 13.

[0052] As can be seen from the above description, the tester can observe the vibration condition of the vibration assembly of the speaker unit through the observation window 13.

[0053] Further, the transparent partition 7 is an acrylic plate or a quartz glass plate.

[0054] As can be seen from the above description, the transparent partition 7 has a low probability of being damaged and is durable.

[0055] Further, 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.

[0056] Further, a pressing probe 9 extending into the placement cavity is provided on the pressing plate 2, and the pressing probe 9 is used to press the speaker unit.

[0057] Embodiment 1

[0058] 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 breathable separator 3, a cover plate 4 and sound-absorbing particles. A first placement groove, a front cavity 11 and a sound outlet 12 are provided on the base 1, and the front cavity 11 communicates with the first placement groove and the sound outlet 12 respectively; the pressing plate 2 covers the base 1, and a second placement groove corresponding to the first placement groove is provided on one side of the pressing plate 2 close to the base 1, and a rear cavity 21 communicating with the second placement groove is provided on the side of the pressing plate 2 far from the base 1, and the sound-absorbing particles are arranged in the rear cavity 21; 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 to be tested; the breathable separator 3 is arranged at the communication part between the second placement groove and the rear cavity 21 to separate the rear cavity 21 from the second placement groove, and the breathable separator 3 is used to prevent the sound-absorbing particles from invading the placement cavity, and the breathable separator 3 can be a breathable mesh cloth, a waterproof breathable film, etc.; the cover plate 4 is located on the side of the pressing plate 2 far from the base 1, and the cover plate 4 is detachably connected to the pressing plate 2 and closes the rear cavity 21, so as to prevent the sound-absorbing particles from escaping from the rear cavity 21, and a protruding part 41 is provided on the cover plate 4, and the protruding part 41 is located in the rear cavity 21.

[0059] In some embodiments, the micro speaker testing tooling is equipped with multiple cover plates 4 with different volumes of the protruding part 41. When the tester replaces the pressing plate 2 with different cover plates 4, the volume of the rear cavity 21 will be different; in order to save production consumables, optionally, the protruding part 41 is detachably connected to the cover plate 4. At this time, the micro speaker testing tooling only needs to be equipped with multiple protruding parts 41 with different volumes. When the tester installs different protruding parts 41 on the cover plate 4, the volume of the rear cavity 21 will be different.

[0060] For the convenient positioning and installation of the cover plate 4, a ring-shaped step for supporting the cover plate 4 is provided at one end of the rear cavity 21 far from the second placement groove. Preferably, a sealing ring 5 for abutting against the cover plate 4 is provided on the ring-shaped step.

[0061] In this embodiment, the cover plate 4 is screwed to the pressure plate 2. In other embodiments, it is also possible that the cover plate 4 is snap-connected to the pressure plate 2 or connected by other means.

[0062] A quick-action toggle clamp 6 for pressing against the pressure plate 2 is provided on the base 1. In an actual device, it is also possible that the pressure plate 2 is magnetically connected or snap-connected to the base 1.

[0063] Optionally, an observation window 13 communicating with the front cavity 11 is provided on one side of the base 1 away from the pressure plate 2. A transparent partition 7 is provided in the observation window 13, and the transparent partition 7 is an acrylic plate or a quartz glass plate.

[0064] A conductive probe 8 extending into the placement cavity is provided on the pressure plate 2. The conductive probe 8 is used to conduct electricity for the speaker unit to be tested located in the placement cavity. A pressing probe 9 extending into the placement cavity is provided on the pressure plate 2. The pressing probe 9 is used to press against the speaker unit to be tested located in the placement cavity.

[0065] In summary, the micro-speaker test tooling provided by the present utility model has a novel structure and can assist in testing the influence of the back cavity on the sound emission performance of the micro-speaker when loading sound-absorbing particles of different volumes at different volumes, greatly improving the versatility of the micro-speaker test tooling, thereby reducing the test cost.

[0066] The above are only the embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in the relevant technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A micro speaker testing tool, characterized in that: include A base, wherein the base is provided with a first placement slot, a front cavity and a sound outlet, and the front cavity is connected to the first placement slot and the sound outlet respectively; A pressing plate, the pressing plate is covered on the base, a side of the pressing plate close to the base is provided with a second placement groove corresponding to the first placement groove, and a side of the pressing plate away from the base is provided with a rear cavity connected to the second placement groove; after the pressing plate is connected to the base, the first placement groove and the second placement groove are combined to form a placement cavity for placing the speaker unit; A breathable spacer, the breathable spacer is arranged at the connection between the second placement groove and the rear cavity to separate the rear cavity from the second placement groove; A cover plate, the cover plate is located at a side of the pressing plate away from the base, the cover plate is detachably connected to the pressing plate and closes the rear cavity, a protrusion is provided on the cover plate, and the protrusion is located in the rear cavity; Sound-absorbing particles are arranged in the rear cavity.

2. The micro speaker test fixture according to claim 1, characterized in that: An annular step for supporting the cover plate is provided at one end of the rear cavity away from the second placement groove.

3. The micro speaker test fixture according to claim 2, characterized in that: The annular step is provided with a sealing ring which abuts against the cover plate.

4. The micro speaker test fixture according to claim 1, characterized in that: The protruding portion is detachably connected to the cover plate.

5. The micro speaker test fixture according to claim 1, characterized in that: The cover plate is screw-connected or snap-connected to the pressure plate.

6. The micro speaker test fixture according to claim 1, characterized in that: A quick toggle clamp for pressing the pressing plate is arranged on the base.

7. The micro speaker testing tool according to claim 1, characterized in that: An observation window communicating with the front cavity is provided on one side of the base away from the pressing plate, and a transparent partition is provided in the observation window.

8. The micro speaker testing tool according to claim 7, characterized in that: The transparent partition is an acrylic plate or a quartz glass plate.

9. The micro speaker testing tool according to claim 1, characterized in that: The pressing plate is provided with a conductive probe extending into the placement cavity, and the conductive probe is used for conducting electricity for the speaker unit.

10. The micro speaker testing tool according to claim 1, characterized in that: The pressing plate is provided with a pressing probe extending into the placement cavity, and the pressing probe is used for pressing the speaker unit.

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