Magnetic flux testing tool for miniature loudspeaker

Abstract

The utility model discloses a miniature loudspeaker magnetic flux test tool, which comprises a base, a vertical column, a support rod, a lifting plate and a locking piece, and is characterized in that the top surface of the base is provided with a placement groove for placing a miniature loudspeaker to be tested; the number of the stand columns is four, the four stand columns are connected to the base in two rows and two columns, and the stand columns are provided with adjusting scales, lifting grooves and a plurality of locking holes arranged in the vertical direction. The number of the supporting rods is two, one supporting rod penetrates through the lifting grooves of the two stand columns located in the same column, and the other supporting rod penetrates through the lifting grooves of the other two stand columns. The top surface of the lifting plate is provided with a mounting area for mounting a flux meter, the mounting area is arranged corresponding to the placing groove, and the lifting plate is placed on the two supporting rods; the locking piece is installed in the locking hole and used for locking the position of the supporting rod in the lifting groove. The magnetic flux testing tool has the advantages of few parts, low manufacturing cost, low storage cost and low testing cost.

Description

Technical Field

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

[0002] With the popularization of mobile devices such as smart phones, the market demand for micro speakers is increasing continuously. At the same time, consumers have higher and higher requirements for the acoustic performance of micro speakers. Therefore, the factors affecting the acoustic performance of micro speakers need to be strictly controlled.

[0003] The micro speaker needs to be tested for magnetic flux. The existing testing method is to place the micro speaker to be tested in the placement groove of the base of the tooling, then place the test block of the tooling on the base and corresponding to the placement groove, and place the fluxmeter on the test block. When it is necessary to test the magnetic flux of the micro speaker to be tested at different distances, it is necessary to replace the test blocks with different thicknesses. Therefore, a set of magnetic flux testing tooling needs to be equipped with multiple test blocks with different thicknesses. It can be seen that the manufacturing cost and storage cost of the existing magnetic flux testing tooling are relatively high, and it is easy to have the phenomenon of loss of test blocks. In addition, there is also the problem of cumbersome testing process. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a low-cost magnetic flux testing tooling for a micro speaker with simple operation.

[0005] In order to solve the above technical problem, the technical solution adopted by the utility model is: a magnetic flux testing tooling for a micro speaker, comprising:

[0006] A base, the top surface of the base is provided with a placement groove for placing the micro speaker to be tested;

[0007] Four columns, the four columns are connected to the base in two rows and two columns, and the columns are provided with adjustment scales, lifting grooves and a plurality of locking holes arranged in the vertical direction;

[0008] Two support rods, one support rod passes through the lifting grooves of the two columns in the same column, and the other support rod passes through the lifting grooves of the other two columns;

[0009] A lifting plate, the top surface of the lifting plate has an installation area for installing a fluxmeter, the installation area corresponds to the placement groove, and the lifting plate is placed on the two support rods;

[0010] Locking pieces, the locking pieces are installed in the locking holes, and the locking pieces are used to lock the position of the support rod in the lifting groove.

[0011] Further, the locking member is a bolt and the locking hole is a socket.

[0012] Further, the locking member is a screw and the locking hole is a threaded hole.

[0013] Further, an installation groove is provided on the top surface of the lifting plate, and the installation area is located at the bottom surface of the installation groove.

[0014] Further, the lifting plate is integrally rectangular, and limiting convex blocks are respectively provided at four corners of the lifting plate. The limiting convex blocks contact the upright column, and the limiting convex blocks are used to limit the degrees of freedom of the lifting plate in the XY plane.

[0015] Further, a pick-and-place groove communicating with the placement groove is further provided on the top surface of the base.

[0016] Further, the depth of the placement groove is greater than or equal to the thickness of the micro speaker to be tested.

[0017] Further, mounting holes are provided on the top surface of the base, and the bottom ends of the upright columns are mounted in the mounting holes.

[0018] Further, the upright column is in the shape of a rectangular body.

[0019] Further, the lifting groove communicates with opposite sides of the upright column, and both ends of the support rod penetrate through the lifting groove.

[0020] The beneficial effects of the present utility model are as follows: The micro speaker magnetic flux testing tooling of the present utility model has few components, does not need to be equipped with multiple test blocks of different thicknesses, effectively reduces the manufacturing cost and storage cost of the magnetic flux testing tooling. During the testing process, only the height of the lifting plate needs to be adjusted, without the need to frequently replace test blocks of different thicknesses, which is conducive to simplifying the test operation steps, improving the test efficiency, and reducing the test cost. Description of the Drawings

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

[0022] Figure 2 It is a top view of the micro speaker magnetic flux testing tooling according to Embodiment 1 of the present utility model;

[0023] Figure 3 It is an exploded view of the micro speaker magnetic flux testing tooling according to Embodiment 1 of the present utility model.

[0024] Reference Numeral Description:

[0025] 1. Base; 11. Placement groove; 12. Pick-and-place groove; 13. Mounting hole;

[0026] 2. Column; 21. Adjustment scale; 22. Lifting groove; 23. Locking hole;

[0027] 3. Support rod;

[0028] 4. Lifting plate; 41. Installation groove; 42. Limit protrusion;

[0029] 5. Micro speaker to be tested. Specific implementation manner

[0030] 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 accompanied by the drawings.

[0031] Please refer to Figures 1 to 3 , a magnetic flux test tooling for a micro speaker, comprising:

[0032] Base 1, on the top surface of the base 1, there is a placement groove 11 for placing the micro speaker 5 to be tested;

[0033] Column 2, the number of the columns 2 is four, and the four columns 2 are connected to the base 1 in two rows and two columns. The column 2 is provided with an adjustment scale 21, a lifting groove 22 and a plurality of locking holes 23 arranged in the vertical direction;

[0034] Support rod 3, the number of the support rods 3 is two. One support rod 3 passes through the lifting grooves 22 of the two columns 2 in the same column, and the other support rod 3 passes through the lifting grooves 22 of the other two columns 2;

[0035] Lifting plate 4, on the top surface of the lifting plate 4, there is an installation area for installing a fluxmeter. The installation area corresponds to the placement groove 11, and the lifting plate 4 is placed on the two support rods 3;

[0036] Locking member, the locking member is installed in the locking hole 23, and the locking member is used to lock the position of the support rod 3 in the lifting groove 22.

[0037] As can be seen from the above description, the beneficial effects of the present utility model are as follows: The magnetic flux test tooling for the micro speaker has few components and does not need to be equipped with multiple test blocks of different thicknesses, effectively reducing the manufacturing cost and storage cost of the magnetic flux test tooling. During the test, only the height of the lifting plate 4 needs to be adjusted, and there is no need to frequently replace test blocks of different thicknesses, which is beneficial to simplifying the test operation steps, improving the test efficiency and reducing the test cost.

[0038] Furthermore, the locking member is a plug pin, and the locking hole 23 is a jack.

[0039] Further, the locking member is a screw, and the locking hole 23 is a threaded hole.

[0040] As can be seen from the above description, there are various specific types of locking members to choose from, which is conducive to enriching the diversity of the magnetic flux test tooling.

[0041] Further, an installation groove 41 is provided on the top surface of the lifting plate 4, and the installation area is located at the bottom surface of the installation groove 41.

[0042] As can be seen from the above description, the existence of the installation groove 41 facilitates the positioning and installation of an external magnetic flux meter.

[0043] Further, the lifting plate 4 is integrally rectangular, and limiting convex blocks 42 are respectively provided at four corners of the lifting plate 4. The limiting convex blocks 42 contact the upright column 2, and the limiting convex blocks 42 are used to limit the degrees of freedom of the lifting plate 4 in the XY plane.

[0044] As can be seen from the above description, the limiting convex blocks 42 at the four corners of the lifting plate 4 can provide guidance for the lifting of the lifting plate 4, ensuring that the lifting plate 4 can only move up and down and cannot shift in the XY plane, so as to ensure that the magnetic flux meter on the lifting plate 4 can be aligned with the central area of the placement groove 11, which is conducive to ensuring the accuracy of the test results.

[0045] Further, a pick-and-place groove 12 communicating with the placement groove 11 is also provided on the top surface of the base 1.

[0046] As can be seen from the above description, the existence of the pick-and-place groove 12 facilitates the pick-and-place of the micro loudspeaker 5 to be tested.

[0047] Further, the depth of the placement groove 11 is greater than or equal to the thickness of the micro loudspeaker 5 to be tested.

[0048] As can be seen from the above description, the lifting plate 4 will not scratch the micro loudspeaker 5 to be tested located in the placement groove 11.

[0049] Further, mounting holes 13 are provided on the top surface of the base 1, and the bottom ends of the upright columns 2 are mounted in the mounting holes 13.

[0050] As can be seen from the above description, the mounting holes 13 can facilitate the positioning and installation of the upright columns 2.

[0051] Further, the upright column 2 is in the shape of a rectangular body.

[0052] Further, the lifting groove 22 communicates with opposite sides of the upright column 2, and both ends of the support rod 3 penetrate through the lifting groove 22.

[0053] As can be seen from the above description, the ends of the support rod 3 are exposed, which can facilitate the tester to adjust the height of the support rod 3, making the operation of the tester more convenient.

[0054] Embodiment 1

[0055] Please refer to Figures 1 to 3 , Embodiment 1 of the present utility model is: a magnetic flux test tooling for a micro speaker, which is used to test the magnetic flux at different distances from the magnetic circuit component in the micro speaker, including a base 1, a column 2, a support rod 3, a lifting plate 4 and a locking member (not shown in the figure). A placement groove 11 for placing the micro speaker 5 to be tested is provided on the top surface of the base 1; the number of the columns 2 is four, and the four columns 2 are connected to the base 1 in two rows and two columns. An adjustment scale 21, a lifting groove 22 and a plurality of locking holes 23 arranged vertically are provided on the column 2; the number of the support rods 3 is two. One support rod 3 passes through the lifting grooves 22 of the two columns 2 in the same column, and the other support rod 3 passes through the lifting grooves 22 of the other two columns 2; the top surface of the lifting plate 4 has an installation area for installing a magnetic flux meter, and the installation area is arranged corresponding to the placement groove 11. The lifting plate 4 is placed on the two support rods 3; the locking member is installed in the locking hole 23, and the locking member is used to lock the position of the support rod 3 in the lifting groove 22.

[0056] When the locking member is a plug pin, the locking hole 23 is a jack; when the locking member is a screw, the locking hole 23 is a threaded hole. Of course, in the actual tooling, the locking hole 23 is a slotted hole, the locking member is a screw, and it is also possible to provide a threaded hole on the support rod 3 that cooperates with the screw.

[0057] For the convenience of positioning and installing the magnetic flux meter, in this embodiment, an installation groove 41 is provided on the top surface of the lifting plate 4, and the installation area is located at the bottom surface of the installation groove 41.

[0058] The lifting plate 4 is integrally rectangular, and limiting convex blocks 42 are respectively provided at the four corners of the lifting plate 4. The limiting convex blocks 42 contact the column 2, and the limiting convex blocks 42 are used to limit the degrees of freedom of the lifting plate 4 in the XY plane, so as to ensure that the magnetic flux meter on the lifting plate 4 can be aligned with the central area of the micro speaker 5 to be tested.

[0059] As a preferred implementation manner, a pick-up groove 12 communicating with the placement groove 11 is further provided on the top surface of the base 1.

[0060] The depth of the placement groove 11 is greater than or equal to the thickness of the micro speaker 5 to be tested. Of course, it is also acceptable that the depth of the placement groove 11 is slightly less than the thickness of the micro speaker 5 to be tested.

[0061] For the convenience of positioning and installing the upright column 2, an installation hole 13 is provided on the top surface of the base 1, and the bottom end of the upright column 2 is installed in the installation hole 13.

[0062] In this embodiment, the upright column 2 is in a rectangular shape, the lifting groove 22 communicates with the opposite sides of the upright column 2, and both ends of the support rod 3 penetrate through the lifting groove 22.

[0063] In summary, the micro-speaker magnetic flux testing tooling provided by the present utility model has few components, does not need to be equipped with multiple test blocks of different thicknesses, effectively reduces the manufacturing cost and storage cost of the magnetic flux testing tooling. During the testing process, only the height of the lifting plate needs to be adjusted, and there is no need to frequently replace test blocks of different thicknesses, which is beneficial to simplifying the testing operation steps, improving the testing efficiency, and reducing the testing cost.

[0064] 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 related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A micro speaker magnetic flux test tool, characterized in that: include A base, wherein the top surface of the base is provided with a placement groove for placing the micro speaker to be tested; There are four upright posts, which are connected to the base in two rows and two columns, and are provided with adjustment scales, lifting slots, and a plurality of locking holes arranged in a vertical direction; Support rods, the number of the support rods is two, one of the support rods passes through the lifting slots of the two columns located in the same column, and the other support rod passes through the lifting slots of the other two columns; A lifting plate, the top surface of which has an installation area for installing a fluxmeter, the installation area is arranged corresponding to the placement slot, and the lifting plate is placed on the two support rods; A locking piece is installed in the locking hole, and is used to lock the position of the support rod in the lifting slot.

2. The micro-speaker magnetic flux testing tool according to claim 1, characterized in that: The locking piece is a latch, and the locking hole is a plug hole.

3. The micro-speaker magnetic flux testing tool according to claim 1, characterized in that: The locking piece is a screw, and the locking hole is a screw hole.

4. The micro-speaker magnetic flux testing tool according to claim 1, characterized in that: The top surface of the lifting plate is provided with a mounting groove, and the mounting area is located at the bottom surface of the mounting groove.

5. The micro-speaker magnetic flux testing tool according to claim 1, characterized in that: The lifting plate is rectangular in shape as a whole, and limiting bumps are respectively arranged at the four corners of the lifting plate. The limiting bumps contact the columns, and the limiting bumps are used to limit the degree of freedom of the lifting plate on the XY plane.

6. The micro-speaker magnetic flux testing tool according to claim 1, characterized in that: The top surface of the base is also provided with a taking and placing groove connected to the placing groove.

7. The micro-speaker magnetic flux testing tool according to claim 1, characterized in that: The depth of the placement groove is greater than or equal to the thickness of the micro speaker to be tested.

8. The micro-speaker magnetic flux testing tool according to claim 1, characterized in that: The top surface of the base is provided with a mounting hole, and the bottom end of the column is mounted in the mounting hole.

9. The micro-speaker magnetic flux testing tool according to claim 1, characterized in that: The column is in a rectangular shape.

10. The micro-speaker magnetic flux testing tool according to claim 9, characterized in that: The lifting slot is connected to two opposite sides of the column, and both ends of the support rod pass through the lifting slot.

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