Miniature loudspeaker test tool

Abstract

The utility model discloses a miniature loudspeaker test tool, which comprises a pressing plate and a sliding separation blade, an air leakage hole is arranged in the pressing plate, the air leakage hole is communicated with two opposite sides of the pressing plate, at least one side of the pressing plate is provided with an air leakage groove, the air leakage groove comprises a first groove and a second groove which are communicated with each other, and the first groove and the second groove are communicated with each other. The sectional area of the first groove is smaller than that of the second groove, and the communication position of the first groove and the second groove is communicated with the end of the air leakage hole. The sliding blocking piece is arranged on the pressing plate in a sliding mode, and the sliding blocking piece is used for blocking part of the area of the air leakage groove. The sliding separation blade and partial area of the air leakage groove are encircled to form an air leakage pipe, and the shielding area of the sliding separation blade to the air leakage groove can be adjusted by adjusting the position of the sliding separation blade on the pressing plate, so that the air leakage amount of inlet and outlet air of the rear cavity is adjusted, the operation process of adjusting the air leakage amount by a tester is extremely simple and convenient, and the screen cloth does not need to be frequently replaced; and the test efficiency can be improved.

Description

Technical Field

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

[0002] With the popularity of mobile devices such as smart phones, the market demand for micro-speakers continues to increase, and the requirements for micro-speaker performance testing are increasing. The amount of air released from the back cavity of the micro-speaker has a direct impact on the amplitude of the micro-speaker. In order to simulate the working state of the speaker module and thus reduce the development cost of the speaker module, when the micro-speaker to be tested is placed in the placement slot of the existing micro-speaker test tooling, a back cavity of the micro-speaker is formed between the micro-speaker to be tested and the pressing plate. The pressing plate is provided with an air vent connecting the outside world with the back cavity, and the back cavity is vented through the air vent. When the air vent volume needs to be adjusted, it is achieved by constantly replacing different types of mesh cloth to cover the air vent. The entire adjustment operation is very troublesome. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a micro-loudspeaker testing tool for conveniently adjusting the air leakage volume of the rear cavity.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a micro speaker testing tool, comprising:

[0005] A pressure plate, wherein the pressure plate is provided with an air leakage hole, the air leakage hole communicating with opposite sides of the pressure plate, and at least one side of the pressure plate is provided with an air leakage groove, the air leakage groove comprising a first groove and a second groove that are connected, the cross-sectional area of the first groove being smaller than the cross-sectional area of the second groove, and the connection point between the first groove and the second groove being connected with an end of the air leakage hole;

[0006] A sliding baffle is slidably disposed on the pressure plate, and is used to cover a portion of the air relief groove.

[0007] Furthermore, the air relief grooves are respectively provided on two opposite sides of the pressing plate.

[0008] Furthermore, at the same time, the sliding block completely covers the first slot or the second slot.

[0009] Furthermore, the length direction of the first groove is consistent with the length direction of the second groove.

[0010] Furthermore, the sum of the lengths of the first slot and the second slot is greater than the length of the sliding block.

[0011] Further, the depth of the first groove is smaller than the depth of the second groove, and / or the width of the first groove is smaller than the width of the second groove.

[0012] Furthermore, a bell-mouth structure is provided at one end of the second groove away from the air leakage hole.

[0013] Furthermore, a sliding groove is provided on the surface of the pressure plate, the sliding groove is connected to the air relief groove, and the sliding baffle is located in the sliding groove and is slidably arranged along the sliding groove.

[0014] Furthermore, the sliding baffle is adhesively connected to the pressure plate.

[0015] Furthermore, the sliding baffle is a plastic sheet.

[0016] The beneficial effects of the present invention are as follows: the micro-speaker testing tooling has a novel structure, the sliding baffle and a partial area of the air relief groove are combined to form an air relief pipe, and the blocking area of the sliding baffle on the air relief groove can be adjusted by adjusting the position of the sliding baffle on the pressure plate, thereby adjusting the air relief amount of the air in and out of the rear cavity. The operation process for the tester to adjust the air relief amount is extremely simple, and there is no need to frequently replace the mesh, which is conducive to improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a micro-speaker testing tool according to the first embodiment of the present utility model;

[0018] Figure 2 This is a cross-sectional view of the micro-speaker testing tooling according to the first embodiment of the present invention;

[0019] Figure 3 for Figure 2 Enlarged view of detail A;

[0020] Figure 4 This is a structural schematic diagram of a pressing plate in a micro-speaker testing tool according to the first embodiment of the present invention.

[0021] Description of labels:

[0022] 1. Base;

[0023] 2. Pressing plate; 21. Air vent; 22. First groove; 23. Second groove; 24. Bell mouth structure; 25. Slide groove;

[0024] 3. Sliding baffle;

[0025] 4. Conductive probe;

[0026] 5. Conflict probe;

[0027] 6. Posterior cavity;

[0028] 7. Baffle;

[0029] 8. Pillar;

[0030] 9. Quick chuck. DETAILED DESCRIPTION

[0031] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

[0032] Please refer to Figures 1 to 4 , a micro speaker test fixture, comprising:

[0033] A pressure plate 2 is provided with an air vent 21 therein, the air vent 21 communicating with opposite sides of the pressure plate 2, and an air vent groove is provided on at least one side of the pressure plate 2, the air vent groove comprising a first groove 22 and a second groove 23 communicating with each other, the cross-sectional area of the first groove 22 being smaller than the cross-sectional area of the second groove 23, and the connecting point between the first groove 22 and the second groove 23 being connected to the end of the air vent 21;

[0034] A sliding baffle 3 is slidably disposed on the pressure plate 2 and is used to block a portion of the air relief groove.

[0035] From the above description, it can be seen that the beneficial effects of the present invention are: the micro-speaker test tooling has a novel structure, the sliding baffle 3 and a partial area of the air relief groove are combined to form an air relief pipe, and the blocking area of the sliding baffle 3 on the air relief groove can be adjusted by adjusting the position of the sliding baffle 3 on the pressure plate 2, thereby adjusting the air leakage volume of the air in and out of the rear cavity 6. The operation process of the tester adjusting the air leakage volume is extremely simple, and there is no need to frequently replace the mesh, which is conducive to improving the test efficiency.

[0036] Furthermore, the air relief grooves are respectively provided on two opposite sides of the pressing plate 2 .

[0037] Furthermore, at the same moment, the sliding block 3 completely covers the first groove 22 or the second groove 23 .

[0038] As can be seen from the above description, during the test, one end of the air relief groove is in the form of a blind hole, so the air can only enter and exit the rear cavity 6 from the area at the other end of the air relief groove that is not blocked by the sliding baffle 3.

[0039] Furthermore, the length direction of the first groove 22 is consistent with the length direction of the second groove 23 .

[0040] As can be seen from the above description, the coaxiality of the first groove 22 and the second groove 23 can facilitate the processing of the air relief groove.

[0041] Furthermore, the sum of the lengths of the first groove 22 and the second groove 23 is greater than the length of the sliding block 3 .

[0042] It can be seen from the above description that the sliding baffle 3 cannot completely block the air release groove at any position, which is conducive to ensuring normal air release of the rear cavity 6.

[0043] Further, the depth of the first groove 22 is smaller than the depth of the second groove 23 , and / or the width of the first groove 22 is smaller than the width of the second groove 23 .

[0044] As can be seen from the above description, there are many options for implementing the cross-sectional area of the first groove 22 being smaller than the cross-sectional area of the second groove 23 .

[0045] Furthermore, a bell-mouth structure 24 is provided at one end of the second groove 23 away from the air leakage hole 21 .

[0046] As can be seen from the above description, the end of the bell-mouth structure 24 allows air to flow in and out of the second slot 23 more smoothly.

[0047] Furthermore, a sliding groove 25 is provided on the surface of the pressing plate 2 , and the sliding groove 25 is connected to the air relief groove. The sliding baffle 3 is located in the sliding groove 25 and is slidably arranged along the sliding groove 25 .

[0048] It can be seen from the above description that the sliding groove 25 can limit the sliding block 3.

[0049] Furthermore, the sliding baffle 3 is adhesively connected to the pressing plate 2 .

[0050] As can be seen from the above description, when the sliding baffle 3 is adjusted to a suitable position, it can be glued and fixed to the pressing plate 2, thereby preventing the sliding baffle 3 from sliding unexpectedly and affecting the accuracy of the test results.

[0051] Furthermore, the sliding baffle 3 is a plastic sheet.

[0052] As can be seen from the above description, the sliding baffle 3 is light and thin, easy for testers to operate, and has low manufacturing cost.

[0053] Example 1

[0054] Please refer to Figures 1 to 4 , Embodiment 1 of the present utility model is: a micro-speaker testing tool, comprising a base 1, a pressure plate 2 and a sliding baffle 3, the pressure plate 2 is provided with a conductive probe 4 and a resistance probe 5, the pressure plate 2 is provided with an air vent 21, the air vent 21 is connected to the opposite sides of the pressure plate 2, specifically, after the pressure plate 2 contacts the base 1, a rear cavity 6 and a placement cavity are formed at the interface between the two, the rear cavity 6 is connected to the placement cavity, the placement cavity is used to place the micro-speaker to be tested, the air vent 21 is connected to the rear cavity 6, the conductive probe 4 is used to supply power to the micro-speaker to be tested, and the resistance probe 5 is used to press the micro-speaker to be tested.

[0055] At least one side of the pressure plate 2 is provided with an air relief groove, and the air relief groove includes a first groove 22 and a second groove 23 that are connected to each other. The cross-sectional area of the first groove 22 is smaller than the cross-sectional area of the second groove 23, and the connection between the first groove 22 and the second groove 23 is connected to the end of the air relief hole 21; the sliding baffle 3 can be slidably provided on the pressure plate 2, and the sliding baffle 3 is used to cover a partial area of the air relief groove.

[0056] Optionally, the air relief grooves are respectively provided on two opposite sides of the pressing plate 2. If not necessary, the air relief grooves are preferably provided only on the exposed surface of the pressing plate 2.

[0057] At the same time, the sliding block 3 completely covers the first groove 22 or the second groove 23 .

[0058] In this embodiment, the length direction of the first groove 22 is consistent with the length direction of the second groove 23 , and the sum of the lengths of the first groove 22 and the second groove 23 is greater than the length of the sliding block 3 .

[0059] The depth of the first groove 22 is smaller than the depth of the second groove 23, and / or the width of the first groove 22 is smaller than the width of the second groove 23. To facilitate processing, the depth of the first groove 22 is consistent with the depth of the second groove 23, or, as in this embodiment, the width of the first groove 22 is consistent with the width of the second groove 23.

[0060] Optionally, a bell-mouth structure 24 is provided at one end of the second groove 23 away from the air leakage hole 21 .

[0061] Preferably, a sliding groove 25 is provided on the surface of the pressure plate 2 , the sliding groove 25 is connected to the air relief groove, and the sliding baffle 3 is located in the sliding groove 25 and is slidably arranged along the sliding groove 25 .

[0062] To prevent the sliding baffle 3 from unexpected displacement, optionally, the sliding baffle 3 is adhesively connected to the pressure plate 2. During the test, the tester first moves the sliding baffle 3 to a predetermined position and then presses the sliding baffle 3 to tightly connect the sliding baffle 3 to the pressure plate 2.

[0063] The sliding baffle 3 is a plastic sheet, specifically a polyethylene sheet.

[0064] The micro-speaker test fixture also includes a baffle 7, which can be regarded as a wall panel of the test speaker for testing. The base 1 is installed on the baffle 7. The baffle 7 is also provided with a column 8, and the column 8 is provided with a quick clamp 9. The quick clamp 9 is used to press the pressure plate 2 so that the pressure plate 2 is close to the base 1.

[0065] To sum up, the micro-speaker testing tooling provided by the present invention has a novel structure. The sliding baffle and a partial area of the air bleed groove are combined to form an air bleed pipe. By adjusting the position of the sliding baffle on the pressure plate, the blocking area of the sliding baffle on the air bleed groove can be adjusted, thereby adjusting the air leakage volume of the air in and out of the rear cavity. The operation process for the tester to adjust the air leakage volume is extremely simple, and there is no need to frequently replace the mesh, which is conducive to improving test efficiency.

[0066] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the description and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A micro speaker testing tool, characterized in that: include A pressure plate, wherein the pressure plate is provided with an air leakage hole, the air leakage hole communicating with opposite sides of the pressure plate, and at least one side of the pressure plate is provided with an air leakage groove, the air leakage groove comprising a first groove and a second groove that are connected, the cross-sectional area of the first groove being smaller than the cross-sectional area of the second groove, and the connection point between the first groove and the second groove being connected with an end of the air leakage hole; A sliding baffle is slidably disposed on the pressure plate, and is used to cover a portion of the air relief groove.

2. The micro speaker test fixture according to claim 1, characterized in that: The air relief grooves are respectively provided on opposite sides of the pressing plate.

3. The micro-speaker testing tool according to claim 1, characterized in that: At the same time, the sliding block completely covers the first slot or the second slot.

4. The micro-speaker testing tool according to claim 3, characterized in that: The length direction of the first groove is consistent with the length direction of the second groove.

5. The micro-speaker testing tool according to claim 4, characterized in that: The sum of the lengths of the first slot and the second slot is greater than the length of the sliding block.

6. The micro-speaker testing tool according to claim 1, characterized in that: The depth of the first groove is smaller than the depth of the second groove, and / or the width of the first groove is smaller than the width of the second groove.

7. The micro-speaker testing tool according to claim 1, characterized in that: A bell-mouth structure is provided at one end of the second groove away from the air leakage hole.

8. The micro-speaker testing tool according to claim 1, characterized in that: A sliding groove is provided on the surface of the pressure plate, the sliding groove is connected to the air relief groove, and the sliding baffle is located in the sliding groove and is slidably arranged along the sliding groove.

9. The micro-speaker testing tool according to claim 1, characterized in that: The sliding baffle is adhesively connected to the pressing plate.

10. The micro-speaker testing tool according to claim 1, characterized in that: The sliding baffle is a plastic sheet.

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