Miniature loudspeaker test tool

Abstract

The utility model discloses a miniature loudspeaker test tool, which comprises a base, a first sealing gasket, a pressing plate, an expansion ring frame and a locking screw, and is characterized in that the base is provided with a placement groove, and a rear cavity communicated with the placement groove is arranged above the placement groove; the first sealing gasket surrounds the rear cavity and is arranged on the base; the pressing plate is located above the base and corresponds to the containing groove, the bottom face of the pressing plate is provided with a containing groove corresponding to the first sealing gasket, and the outer wall of the pressing plate is provided with a threaded hole communicating with the containing groove; the expansion ring frame is arranged in the storage groove in a lifting manner; the locking screws are arranged at the threaded holes and abut against the expanding ring frame. The miniature loudspeaker testing tool is novel in structure, can assist in testing the performance of the miniature loudspeaker when the miniature loudspeaker is matched with rear cavities with different volumes, saves the manufacturing cost of the tool, improves the testing efficiency, and is simple and convenient to operate by testers.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, in particular to a micro-speaker test tooling fixture. Background Art

[0002] With the popularization of mobile devices such as smart phones, more and more users hope to improve the sound quality of the devices, and the requirements for the performance of micro-speakers are also getting higher and higher. Therefore, in the production process, a micro-speaker test tooling fixture is needed to test the performance of micro-speakers.

[0003] The micro-speaker test tooling fixture includes a base and a pressing plate. The pressing plate is located directly above the base. A chamber is formed at the boundary between the pressing plate and the base. The micro-speaker to be tested is placed in the chamber and divides the chamber into a front chamber and a rear chamber. The base has a sound outlet communicating with the front chamber. In the prior art, the total volume of the rear chamber on the micro-speaker test tooling fixture cannot be adjusted. If it is necessary to test the performance of the micro-speaker with different sizes of rear chambers, multiple test tooling fixtures with different rear chamber sizes need to be prepared. During the test process, the tooling fixture parts need to be replaced multiple times, the operation is complex, and manufacturing multiple tooling fixture parts will also increase the cost. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a micro-speaker test tooling fixture with an adjustable rear chamber volume.

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

[0006] A base, on which a placement groove is provided, and a rear chamber communicating with the placement groove is provided above the placement groove;

[0007] A first sealing gasket, which is arranged on the base around the rear chamber;

[0008] A pressing plate, which is located above the base and corresponds to the placement groove. The bottom surface of the pressing plate has a receiving groove corresponding to the first sealing gasket, and a threaded hole communicating with the receiving groove is provided on the outer wall of the pressing plate;

[0009] An expansion ring frame, which is arranged in the receiving groove in a liftable manner;

[0010] A locking screw, which is arranged at the threaded hole and presses against the expansion ring frame.

[0011] Further, the expansion ring frame presses against the first sealing gasket.

[0012] Further, an adjustment scale mark is provided on the outer wall of the expansion ring frame.

[0013] Furthermore, the overall shape of the expansion ring frame is a rectangular frame.

[0014] Furthermore, the locking screws are respectively arranged on both sides of the expansion ring frame.

[0015] Furthermore, the outer wall of the expansion ring frame has a receiving groove for receiving the ends of the locking screws.

[0016] Furthermore, the height of the expansion ring frame is greater than or equal to the depth of the receiving groove.

[0017] Furthermore, a boss is provided at the bottom of the pressing plate, the receiving groove is arranged on the bottom surface of the boss, and the threaded hole communicates with the outer wall of the boss.

[0018] Furthermore, a positioning block is further provided at the bottom of the pressing plate, and a positioning groove cooperating with the positioning block is provided on the base.

[0019] Furthermore, it further includes a baffle plate and a quick chuck. A column and a placement area for placing the base are provided on the baffle plate, and the quick chuck is provided on the column. The quick chuck is located above the pressing plate and is arranged corresponding to the pressing plate.

[0020] The beneficial effects of the present utility model are as follows: The structure of this micro - speaker testing tooling is novel. The actual rear - cavity volume is equal to the sum of the volume of the area enclosed by the expansion ring frame and the pressing plate and the rear - cavity volume on the base. Therefore, by adjusting the protruding height of the expansion ring frame relative to the bottom surface of the pressing plate, the actual rear - cavity volume of the testing tooling can be adjusted, so as to test the performance of the micro - speaker when it is paired with rear - cavities of different volumes, greatly saving the tooling manufacturing cost, improving the testing efficiency, and making the operation of the testing personnel simple. Brief 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 a part of the structure 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 a part of the structure of the micro - speaker testing tooling according to Embodiment 1 of the present utility model.

[0024] Label Description:

[0025] 1. Base; 11. Placement groove; 12. Rear cavity;

[0026] 2. First sealing gasket;

[0027] 3. Pressure plate; 31. Storage groove; 32. Threaded hole; 33. Positioning block;

[0028] 4. Expansion ring frame; 41. Adjustment scale mark; 42. Receiving groove;

[0029] 51. Elastic pressing probe; 52. Elastic conduction probe;

[0030] 6. Baffle; 61. Placing area;

[0031] 7. Quick chuck;

[0032] 8. Micro speaker to be tested. Specific implementation manner

[0033] 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 manners and with reference to the drawings.

[0034] Please refer to Figures 1 to 3 , a micro speaker testing tooling, comprising:

[0035] Base 1, a placing groove 11 is provided on the base 1, and a rear cavity 12 communicating with the placing groove 11 is provided above the placing groove 11;

[0036] First sealing gasket 2, the first sealing gasket 2 is disposed around the rear cavity 12 on the base 1;

[0037] Pressure plate 3, the pressure plate 3 is located above the base 1 and is arranged corresponding to the placing groove 11, a storage groove 31 corresponding to the first sealing gasket 2 is provided on the bottom surface of the pressure plate 3, and a threaded hole 32 communicating with the storage groove 31 is provided on the outer wall of the pressure plate 3;

[0038] Expansion ring frame 4, the expansion ring frame 4 is liftably disposed in the storage groove 31;

[0039] Locking screw, the locking screw is disposed at the threaded hole 32 and presses against the expansion ring frame 4.

[0040] As can be seen from the above description, the beneficial effect of the present utility model is that: the structure of this micro speaker testing tooling is novel, the actual volume of the rear cavity 12 is equal to the sum of the volume of the area surrounded by the expansion ring frame 4 and the pressure plate 3 and the volume of the rear cavity 12 on the base 1. Therefore, by adjusting the protruding height of the expansion ring frame 4 relative to the bottom surface of the pressure plate 3, the actual volume of the rear cavity 12 of the testing tooling can be adjusted, so as to test the performance of the micro speaker when it is paired with rear cavities 12 of different volumes, greatly saving the tooling manufacturing cost, improving the testing efficiency, and being easy for the tester to operate.

[0041] Furthermore, the expansion ring frame 4 presses against the first sealing gasket 2.

[0042] As can be seen from the above description, the expansion ring frame 4 pressing against the first gasket 2 can ensure the airtightness of the rear cavity 12, thereby improving the accuracy of the test results.

[0043] Further, an adjustment scale mark 41 is provided on the outer wall of the expansion ring frame 4.

[0044] As can be seen from the above description, the presence of the adjustment scale mark 41 facilitates the tester to grasp the actual volume of the rear cavity 12.

[0045] Further, the expansion ring frame 4 is integrally in the shape of a rectangular frame.

[0046] Further, the locking screws are respectively provided on both sides of the expansion ring frame 4.

[0047] As can be seen from the above description, the expansion ring frame 4 can be stably locked, which is beneficial to preventing the unexpected lifting of the expansion ring frame 4, resulting in inaccurate test results.

[0048] Further, a receiving groove 42 for receiving the end portion of the locking screw is provided on the outer wall of the expansion ring frame 4.

[0049] As can be seen from the above description, the locking screw can play a role in guiding the lifting of the expansion ring frame 4 to a certain extent.

[0050] Further, the height of the expansion ring frame 4 is greater than or equal to the depth of the receiving groove 31.

[0051] As can be seen from the above description, the expansion ring frame 4 can effectively press against the first gasket 2, thereby ensuring the airtightness of the rear cavity 12.

[0052] Further, a boss is provided at the bottom of the pressing plate 3, the receiving groove 31 is provided on the bottom surface of the boss, and the threaded hole 32 communicates with the outer wall of the boss.

[0053] As can be seen from the above description, the presence of the boss facilitates the machining of the receiving groove 31 and the threaded hole 32.

[0054] Further, a positioning block 33 is further provided at the bottom of the pressing plate 3, and a positioning groove for cooperating with the positioning block 33 is provided on the base 1.

[0055] As can be seen from the above description, the pressing plate 3 and the base 1 can achieve precise positioning through the cooperation of the positioning block 33 and the positioning groove, thereby ensuring that the expansion ring frame 4 can effectively press against the first gasket 2.

[0056] Further, it further includes a baffle 6 and a quick chuck 7. The baffle 6 is provided with a column and a placement area 61 for placing the base 1. The quick chuck 7 is provided on the column. The quick chuck 7 is located above the pressing plate 3 and is arranged corresponding to the pressing plate 3.

[0057] As can be seen from the above description, the baffle 6 can be regarded as a wall panel of the test speaker for testing.

[0058] Embodiment 1

[0059] Please refer to Figures 1 to 3 , Embodiment 1 of the present utility model is: a micro - speaker test tooling, including a base 1, a first gasket 2, a pressing plate 3, an expansion ring frame 4 and a locking screw. The base 1 is provided with a placement groove 11 for placing the micro - speaker 8 to be tested. Above the placement groove 11, there is a rear cavity 12 communicating with the placement groove 11. The first gasket 2 is arranged around the rear cavity 12 on the base 1. The first gasket 2 can be a silica gel gasket, etc. The pressing plate 3 is located above the base 1 and is arranged corresponding to the placement groove 11. The bottom surface of the pressing plate 3 has a receiving groove 31 arranged corresponding to the first gasket 2. The outer wall of the pressing plate 3 has a threaded hole 32 communicating with the receiving groove 31. The expansion ring frame 4 is arranged in the receiving groove 31 in a liftable manner. Preferably, the bottom end of the expansion ring frame 4 presses against the first gasket 2. The locking screw is arranged at the threaded hole 32 and presses against the expansion ring frame 4, so as to lock the relative position relationship between the expansion ring frame 4 and the pressing plate 3. It is easy to understand that when the bottom end of the expansion ring frame 4 protrudes from the bottom surface of the pressing plate 3, the hollow area of the expansion ring frame 4 and the bottom surface of the pressing plate 3 enclose an expansion chamber. The total volume of the actual rear cavity 12 is the sum of the volume of the expansion chamber and the volume of the rear cavity 12.

[0060] The pressing plate 3 is provided with an elastic pressing probe 51 and an elastic conducting probe 52. The elastic pressing probe 51 is used to press the micro - speaker 8 to be tested in the placement groove 11 to apply pressure to the micro - speaker 8 to be tested. The elastic conducting probe 52 is used to conduct the micro - speaker 8 to be tested. Optionally, the elastic pressing probe 51 is arranged relative to the pressing plate 3 in a liftable manner, so that the elastic pressing probe 51 can effectively adapt to the protruding distance of the bottom end of the expansion ring frame 4 relative to the bottom surface of the pressing plate 3. Preferably, the elastic pressing probe 51 is threadedly connected to the pressing plate 3. Similarly, the elastic conducting probe 52 is arranged relative to the pressing plate 3 in a liftable manner, so that the elastic conducting probe 52 can effectively adapt to the protruding distance of the bottom end of the expansion ring frame 4 relative to the bottom surface of the pressing plate 3. Preferably, the elastic conducting probe 52 is threadedly connected to the pressing plate 3.

[0061] To facilitate the testers to understand the overall volume of the current real rear cavity 12, in this embodiment, an adjustment scale mark 41 is provided on the outer wall of the expansion ring frame 4.

[0062] In this embodiment, the expansion ring frame 4 is integrally in the shape of a rectangular frame. In other embodiments, the expansion ring frame 4 can also be in other shapes, such as circular ring shape, elliptical ring shape, etc.

[0063] The locking screws are respectively provided on both sides of the expansion ring frame 4, so that the expansion ring frame 4 can be locked more stably.

[0064] Optionally, the outer wall of the expansion ring frame 4 has a receiving groove 42 for receiving the end of the locking screw.

[0065] Preferably, the height of the expansion ring frame 4 is greater than or equal to the depth of the receiving groove 31.

[0066] In this embodiment, a convex platform is provided at the bottom of the pressing plate 3, the receiving groove 31 is provided on the bottom surface of the convex platform, and the threaded hole 32 communicates with the outer wall of the convex platform.

[0067] To facilitate the positioning of the pressing plate 3 and the base 1, a positioning block 33 is further provided at the bottom of the pressing plate 3, and a positioning groove matching with the positioning block 33 is provided on the base 1.

[0068] The micro - speaker test tooling further includes a baffle 6 and a quick - clamp 7. The baffle 6 is provided with a column and a placement area 61 for placing the base 1. The quick - clamp 7 is provided on the column, and the quick - clamp 7 is located above the pressing plate 3 and is arranged corresponding to the pressing plate 3.

[0069] In summary, the micro - speaker test tooling provided by the present utility model has a novel structure, can assist in testing the performance of the micro - speaker when paired with rear cavities of different volumes, saves the tooling manufacturing cost, improves the test efficiency, and is easy for the testers to operate.

[0070] The above are only the embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. All equivalent transformations made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in related technical fields, are 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 a placement groove is provided on the base, and a rear cavity communicating with the placement groove is provided above the placement groove; a first sealing gasket, the first sealing gasket surrounding the rear cavity and disposed on the base; A pressing plate, the pressing plate is located above the base and is arranged corresponding to the placement groove, the bottom surface of the pressing plate has a receiving groove arranged corresponding to the first sealing gasket, and the outer wall of the pressing plate has a threaded hole connected to the receiving groove; An expansion ring frame, the expansion ring frame is liftably disposed in the receiving groove; A locking screw is arranged at the threaded hole and presses against the expansion ring frame.

2. The micro speaker test fixture according to claim 1, characterized in that: The expansion ring frame presses against the first sealing gasket.

3. The micro speaker test fixture according to claim 1, characterized in that: The outer wall of the expansion ring frame is provided with adjustment scale marks.

4. The micro speaker test fixture according to claim 1, characterized in that: The expansion ring frame is in the shape of a rectangular frame as a whole.

5. The micro speaker test fixture according to claim 1, characterized in that: The locking screws are respectively provided on both sides of the expansion ring frame.

6. The micro speaker test fixture according to claim 1, characterized in that: The outer wall of the expansion ring frame has a receiving groove for receiving the end of the locking screw.

7. The micro speaker testing tool according to claim 1, characterized in that: The height of the expansion ring frame is greater than or equal to the depth of the storage groove.

8. The micro speaker testing tool according to claim 1, characterized in that: A boss is provided at the bottom of the pressing plate, the receiving groove is provided on the bottom surface of the boss, and the threaded hole is connected to the outer wall of the boss.

9. The micro speaker test fixture according to claim 8, characterized in that: A positioning block is also provided at the bottom of the pressing plate, and a positioning groove matched with the positioning block is provided on the base.

10. The micro speaker testing tool according to claim 1, characterized in that: It also includes a baffle and a quick clamp, wherein the baffle is provided with a column and a placement area for placing the base, the column is provided with the quick clamp, and the quick clamp is located above the pressing plate and is arranged corresponding to the pressing plate.

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