Miniature loudspeaker test tool

Abstract

The utility model discloses a miniature loudspeaker test tool, which comprises a base, a pressing plate, a breathable isolation piece, a telescopic elastic cylinder body, sound absorption particles, an elastic piece and a cover plate, and is characterized in that the base is provided with a first placement groove; the base is covered with the pressing plate, the pressing plate is provided with a second containing groove and a rear cavity which are communicated, and the rear cavity is provided with a protruding edge extending inwards; the breathable separator is arranged at the communication part of the second placing groove and the rear cavity; the telescopic elastic cylinder is located in the rear cavity, and one end of the telescopic elastic cylinder makes contact with the protruding edge. A part of the sound-absorbing particles are positioned in the telescopic elastic cylinder; the elastic piece is located on the outer side of the telescopic elastic barrel, and one end of the elastic piece makes contact with the protruding edge. The cover plate is arranged in the rear cavity in a sliding mode, the other end of the elastic piece and the telescopic elastic barrel abut against the cover plate, and the cover plate is connected with the pressing plate through a screw. The miniature loudspeaker test tool 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.

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. 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 different volumes of sound-absorbing particles at different volumes, which has 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 novel structure, which can assist in testing the sound performance of the rear cavity of a speaker unit under different volumes and when filled with different volumes of sound-absorbing particles.

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

[0006] 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;

[0007] A pressing plate, which covers the base. The side of the pressing plate close to the base has a second placement groove corresponding to the first placement groove. A rear cavity communicating with the second placement groove is provided on the side of the pressing plate far from the base. A convex edge extending inwards is provided in the area of the rear cavity close to the second placement groove; 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;

[0008] A breathable isolation member, which is arranged at the communication position between the second placement groove and the rear cavity to separate the rear cavity from the second placement groove;

[0009] A telescopic elastic cylinder, which is located in the rear cavity, and one end of the telescopic elastic cylinder forms a continuous ring-shaped contact surface with the convex edge;

[0010] Sound-absorbing particles, which are arranged in the rear cavity, and a part of the sound-absorbing particles are located inside the telescopic elastic cylinder;

[0011] An elastic member, the elastic member is located outside the telescopic elastic cylinder body, and one end of the elastic member contacts the convex edge;

[0012] A cover plate, the cover plate is slidably disposed in the rear cavity and closes the rear cavity. The other end of the elastic member and the other end of the telescopic elastic cylinder body respectively abut against the cover plate, and the cover plate is connected to the pressing plate by screws.

[0013] Further, the number of the elastic members is multiple, the elastic members are springs, and the screws pass through the springs.

[0014] Further, the cover plate has a guiding block protruding outward, the pressing plate is provided with a guiding groove communicating with the rear cavity, the guiding groove is located outside the rear cavity, the guiding block cooperates with the guiding groove and is slidable along the guiding groove, the other end of the elastic member contacts the guiding block, and the guiding block is provided with a through hole for the screw to pass through.

[0015] Further, the wall surface of the rear cavity has a plurality of scale marks arranged along the depth direction of the rear cavity.

[0016] Further, one end of the telescopic elastic cylinder body is hermetically connected to the convex edge through a sealant to form an annular glue area on the convex edge.

[0017] Further, a quick-action toggle clamp for pressing the pressing plate is provided on the base.

[0018] Further, an observation 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 observation window.

[0019] Further, a receiving groove for receiving the pressing plate is provided on the base, and a pick-up groove is provided on the wall surface of the receiving groove.

[0020] Further, a conductive probe extending into the placement cavity is provided on the pressing plate, and the conductive probe is used for conducting electricity to the speaker unit.

[0021] Further, a pressing probe extending into the placement cavity is provided on the pressing plate, and the pressing probe is used for pressing the speaker unit.

[0022] The beneficial effects of the present utility model are as follows: the micro-speaker test tooling has a novel structure, and the amount of sound-absorbing particles in the rear cavity can be set as needed, that is, the total volume of the sound-absorbing particles can be adjusted, and the total volume of the rear cavity can be adjusted by adjusting the tightening degree of the screws, so that the micro-speaker test tooling can assist in testing the influence of sound-absorbing particles of different volumes loaded in the rear cavity on the sound performance of the micro-speaker under different volumes, thereby greatly improving the versatility of the micro-speaker test tooling and reducing the testing cost.

[0023] In addition, the micro-speaker test tool can also assist in testing the effect of the rear cavity being filled with sound-absorbing particles at different volumes on the sound performance of the micro-speaker, further improving the versatility of the micro-speaker test tool.

[0024] The retractable elastic cylinder can limit the range of movement of the sound-absorbing particles, preventing the sound-absorbing particles from moving into the working area of ​​the elastic member and causing damage or affecting the operation of the elastic member. The retractable elastic cylinder can also assist in filling the sound-absorbing particles into the rear cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of a micro-speaker testing tool according to the first embodiment of the present utility model;

[0026] Figure 2 It is a cross-sectional view of the micro-speaker testing tooling of the first embodiment of the utility model;

[0027] Figure 3 This is an exploded view of the pressing plate in the micro-speaker testing tooling of the first embodiment of the utility model.

[0028] Description of labels:

[0029] 1. Base; 11. Front cavity; 12. Sound outlet; 13. Receiving slot; 14. Pick-up and place slot; 15. Observation window;

[0030] 2. Pressing plate; 21. Rear cavity; 22. Convex edge; 23. Screw hole; 24. Guide groove; 25. Scale mark;

[0031] 3. Breathable isolation parts;

[0032] 4. Retractable elastic cylinder;

[0033] 5. Elastic parts;

[0034] 6. Cover plate; 61. Guide block; 62. Via hole;

[0035] 7. Quick elbow clamp;

[0036] 8. Transparent partition;

[0037] 9. Conductive probe;

[0038] 10. Pressure probe. Detailed implementation mode

[0039] To describe in detail the technical content, achieved purpose and effects of the present utility model, the following is described in conjunction with the implementation mode and with reference to the accompanying drawings.

[0040] Please refer to Figures 1 to 3 , a micro-speaker test tooling, comprising:

[0041] 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;

[0042] Pressing plate 2, which covers the base 1. On the side of the pressing plate 2 close to the base 1, there is a second placement groove corresponding to the first placement groove. On the side of the pressing plate 2 far from the base 1, there is a rear cavity 21 communicating with the second placement groove. In the area of the rear cavity 21 close to the second placement groove, there is a convex edge 22 extending inwards; 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;

[0043] Ventilation isolation member 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;

[0044] Retractable elastic cylinder 4, which is located in the rear cavity 21, and one end of the retractable elastic cylinder 4 forms a continuous ring-shaped contact surface with the convex edge 22;

[0045] Sound-absorbing particles, which are arranged in the rear cavity 21, and a part of the sound-absorbing particles are located inside the retractable elastic cylinder 4;

[0046] Elastic member 5, which is located outside the retractable elastic cylinder 4, and one end of the elastic member 5 contacts the convex edge 22;

[0047] Cover plate 6, which is slidably arranged in the rear cavity 21 and closes the rear cavity 21. The other end of the elastic member 5 and the other end of the retractable elastic cylinder 4 respectively abut against the cover plate 6, and the cover plate 6 is connected to the pressing plate 2 by screws.

[0048] As can be seen from the above description, 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 21 can be set as required, that is, the total volume of the sound-absorbing particles can be adjusted. By adjusting the tightening degree of the screw, the total volume of the rear cavity 21 can be adjusted, so that the micro-speaker testing tooling can assist in testing the influence of the rear cavity 21 with different volumes loaded with different volumes of sound-absorbing particles on the sound generation performance of the micro-speaker, greatly improving the versatility of the micro-speaker testing tooling and thus reducing the testing cost. In addition, this micro-speaker testing tooling can also assist in testing the influence of the rear cavity 21 filled with sound-absorbing particles with different volumes on the sound generation performance of the micro-speaker at different volumes, further improving the versatility of the micro-speaker testing tooling. The telescopic elastic cylinder 4 can limit the movement range of the sound-absorbing particles, prevent the sound-absorbing particles from moving into the working area of the elastic member 5 and causing damage or affecting the operation of the elastic member 5, and the telescopic elastic cylinder 4 can also assist in filling the sound-absorbing particles into the rear cavity 21.

[0049] Further, the number of the elastic members 5 is multiple, the elastic members 5 are springs, and the screw passes through the springs.

[0050] As can be seen from the above description, the screw can play a role in limiting the spring, preventing the spring from interfering with the telescopic elastic cylinder 4 and causing the telescopic elastic cylinder 4 to be scratched by the spring.

[0051] Further, the cover plate 6 has a guiding block 61 protruding outward, the pressing plate 2 is provided with a guiding groove 24 communicating with the rear cavity 21, the guiding groove 24 is located outside the rear cavity 21, the guiding block 61 is matched with the guiding groove 24 and can slide along the guiding groove 24, the other end of the elastic member 5 contacts the guiding block 61, and the guiding block 61 is provided with a through hole 62 for the screw to pass through.

[0052] As can be seen from the above description, the cooperation between the guiding block 61 and the guiding groove 24 can enable the cover plate 6 to smoothly lift and lower in the rear cavity 21.

[0053] Further, the wall surface of the rear cavity 21 is provided with a plurality of scale marks 25 arranged along the depth direction of the rear cavity 21.

[0054] As can be seen from the above description, the tester can timely know the specific volume of the current rear cavity 21 by checking the scale marks 25, so as to facilitate the tester to select the screwing direction of the screw.

[0055] Further, one end of the telescopic elastic cylinder 4 is hermetically connected to the convex edge 22 through a sealant to form an annular glue area on the convex edge 22.

[0056] As can be seen from the above description, the volume of the rear cavity 21 is highly controllable, and the dust of the sound-absorbing particles will not invade the guiding groove 24.

[0057] Further, a quick-action toggle clamp 7 for pressing the pressing plate 2 is provided on the base 1.

[0058] Further, an observation window 15 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 8 is provided in the observation window 15.

[0059] 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 15.

[0060] Further, a receiving groove 13 for receiving the pressing plate 2 is provided on the base 1, and a picking groove 14 is provided on the wall surface of the receiving groove 13.

[0061] As can be seen from the above description, the receiving groove 13 can facilitate the positioning and installation of the pressing plate 2 and the base 1, and the picking groove 14 can facilitate the tester to take out the pressing plate 2 to replace the speaker unit.

[0062] Further, a conductive probe 9 extending into the placing cavity is provided on the pressing plate 2, and the conductive probe 9 is used to conduct electricity for the speaker unit.

[0063] Further, a pressing probe 10 extending into the placing cavity is provided on the pressing plate 2, and the pressing probe 10 is used to press the speaker unit.

[0064] Embodiment 1

[0065] Please refer to Figures 1 to 3, Embodiment 1 of the present utility model is: A micro-speaker testing tooling, comprising a base 1, a pressing plate 2, a breathable separator 3, a telescopic elastic cylinder 4, sound-absorbing particles, an elastic member 5 and a cover plate 6. 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. The side of the pressing plate 2 close to the base 1 has a second placement groove corresponding to the first placement groove. The side of the pressing plate 2 away from the base 1 is provided with a rear cavity 21 communicating with the second placement groove. The sound-absorbing particles are arranged in the rear cavity 21. A convex edge 22 extending inwards is provided in the area of the rear cavity 21 close to the second placement groove. Preferably, the convex edge 22 and the pressing plate 2 are an integrally formed integral structure; 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 a speaker unit; 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. The breathable separator 3 is used to prevent the sound-absorbing particles from invading the placement cavity. The breathable separator 3 can be a breathable mesh cloth, a waterproof breathable film, etc.; The telescopic elastic cylinder 4 is located in the rear cavity 21. One end of the telescopic elastic cylinder 4 contacts the convex edge 22 to form a continuous ring-shaped contact surface. A part of the sound-absorbing particles is located inside the telescopic elastic cylinder 4; The elastic member 5 is located outside the telescopic elastic cylinder 4. One end of the elastic member 5 contacts the convex edge 22; The cover plate 6 is slidably arranged in the rear cavity 21 and closes the rear cavity 21 to prevent the sound-absorbing particles from escaping from the rear cavity 21. The other end of the elastic member 5 and the other end of the telescopic elastic cylinder 4 respectively abut against the cover plate 6. The cover plate 6 and the pressing plate 2 are connected by screws. The pressing plate 2 is provided with screw holes 23 matching with the screws.

[0066] The material of the telescopic elastic cylinder 4 can be silicone rubber, etc. Moreover, in a specific product, the telescopic elastic cylinder 4 can also be a foldable structure embedded with steel wires, which can be specifically selected according to actual needs.

[0067] The number of the elastic members 5 is multiple. The elastic members 5 can be selected as springs. The screws pass through the springs.

[0068] To ensure that the cover plate 6 can slide smoothly in the rear cavity 21, the cover plate 6 is provided with a guiding block 61 protruding outward, and the pressing plate 2 is provided with a guiding groove 24 communicating with the rear cavity 21. The guiding groove 24 is located outside the rear cavity 21. The guiding block 61 cooperates with the guiding groove 24 and can slide along the guiding groove 24. The other end of the elastic member 5 contacts the guiding block 61, and the guiding block 61 is provided with a through hole 62 for the screw to pass through, that is, the elastic member 5 is located in the guiding groove 24.

[0069] In this embodiment, two guiding blocks 61 are respectively provided at both ends of the cover plate 6. The guiding blocks 61 located at both ends of the cover plate 6 are symmetrically arranged. Correspondingly, the number of springs is also four.

[0070] As a preferred embodiment, the wall surface of the rear cavity 21 is provided with a plurality of scale marks 25 arranged along the depth direction of the rear cavity 21. At this time, the tester can quickly understand the specific volume of the current rear cavity 21 by observing the scale marks 25 aligned with the top edge of the cover plate 6.

[0071] In this embodiment, one end of the telescopic elastic cylinder 4 is hermetically connected to the convex edge 22 through a sealant to form an annular glue area on the convex edge 22.

[0072] The base 1 is provided with a quick-action toggle clamp 7 for pressing the pressing plate 2. In an actual device, it is also possible that the pressing plate 2 is magnetically connected or snap-connected to the base 1. Optionally, the base 1 is provided with a receiving groove 13 for receiving the pressing plate 2, and the wall surface of the receiving groove 13 is provided with a pick-up groove 14.

[0073] Optionally, an observation window 15 communicating with the front cavity 11 is provided on one side of the base 1 away from the pressing plate 2. A transparent partition 8 is provided in the observation window 15, and the transparent partition 8 is an acrylic plate or a quartz glass plate.

[0074] The pressing plate 2 is provided with a conductive probe 9 extending into the placement cavity. The conductive probe 9 is used to conduct electricity for the speaker unit to be tested located in the placement cavity. The pressing plate 2 is provided with a pressing probe 10 extending into the placement cavity. The pressing probe 10 is used to press the speaker unit to be tested located in the placement cavity.

[0075] 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 rear cavity on the sound performance of the micro-speaker when loading different volumes of sound-absorbing particles at different volumes, greatly improving the versatility of the micro-speaker test tooling, thereby reducing the test cost. In particular, this micro-speaker test tooling can assist in testing the influence of the rear cavity on the sound performance of the micro-speaker when filled with sound-absorbing particles at different volumes.

[0076] The above are only 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 related technical fields, shall be similarly included within 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, a side of the pressing plate away from the base is provided with a rear cavity connected to the second placement groove, and a region of the rear cavity close to the second placement groove is provided with a convex edge extending inwards; 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 a 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 retractable elastic cylinder, wherein the retractable elastic cylinder is located in the rear cavity, and one end of the retractable elastic cylinder forms a continuous ring-frame-shaped contact surface with the convex edge; Sound-absorbing particles, the sound-absorbing particles are arranged in the rear cavity, and a part of the sound-absorbing particles are located in the retractable elastic cylinder; An elastic member, the elastic member is located outside the retractable elastic cylinder, and one end of the elastic member contacts the convex edge; A cover plate is slidably disposed in the rear cavity and closes the rear cavity. The other end of the elastic member and the other end of the telescopic elastic cylinder respectively abut against the cover plate. The cover plate is connected to the pressure plate by screws.

2. The micro speaker test fixture according to claim 1, characterized in that: The number of the elastic members is plural, the elastic members are springs, and the screws pass through the springs.

3. The micro speaker test fixture according to claim 2, characterized in that: The cover plate has a guide block protruding outward, and the pressure plate is provided with a guide groove connected to the rear cavity, the guide groove is located on the outside of the rear cavity, the guide block cooperates with the guide groove and can slide along the guide groove, the other end of the elastic member contacts the guide block, and the guide block is provided with a through hole for the screw to pass through.

4. The micro speaker test fixture according to claim 1, characterized in that: The wall surface of the rear cavity has a plurality of scale marks arranged along the depth direction of the rear cavity.

5. The micro speaker test fixture according to claim 1, characterized in that: One end of the telescopic elastic cylinder is sealed and connected to the convex edge through a sealant, and a ring-frame-shaped glue area is formed on the convex edge.

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 test fixture according to claim 1, characterized in that: The base is provided with a receiving groove for receiving the pressing plate, and the wall surface of the receiving groove is provided with a taking and placing groove.

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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