Bonding force test tool for micro-speaker

Abstract

This utility model discloses an adhesive force testing fixture for miniature loudspeakers, including a base, a pressing member, and a locking assembly. The base has a placement groove; the pressing member is detachably connected to the base and is positioned on the outer side of the placement groove; the locking assembly is located above the placement groove and has a locking part. The placement groove on the base is used to place the assembly obtained by bonding the frame and FPC. The pressing member cooperates with the base to clamp and fix the FPC in the area outside the frame. The locking assembly is used to lock the frame. The locking assembly is connected to a force measuring machine. By pulling the locking assembly along the thickness direction of the base, the adhesive force between the frame and the FPC can be tested. Therefore, this adhesive force testing fixture for miniature loudspeakers can assist in testing the adhesive force between the FPC and the frame, thereby facilitating subsequent optimization of bonding materials and process parameters, and providing experimental data support for improving the interfacial bonding strength between the FPC and the frame.

Description

Technical Field

[0001] This utility model relates to the technical field of tooling fixtures for miniature loudspeakers, and in particular to adhesive force testing fixtures for miniature loudspeakers. Background Technology

[0002] With the widespread adoption of smartphones and other mobile devices, the market demand for miniature speakers is constantly increasing. For miniature speakers, the reliability of the bonding between the FPC and the frame directly affects product performance and lifespan. Therefore, it is necessary to design a testing fixture for the bonding force between the FPC and the frame. By testing the bonding force, the bonding materials and process parameters can be optimized to improve the bonding strength between the FPC and the frame, thereby ensuring the structural reliability of miniature speakers under the trend of miniaturization. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a micro loudspeaker adhesive force testing fixture that can assist in testing the adhesive force between FPC and frame.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an adhesive force testing fixture for miniature loudspeakers, comprising:

[0005] The base has a placement slot.

[0006] A pressing member is detachably connected to the base, and the pressing member is disposed on the outer side of the placement groove;

[0007] A locking component is located above the placement slot and has a locking part.

[0008] Furthermore, the base is provided with multiple protrusions, and the multiple protrusions together form the placement groove, with a gap between two adjacent protrusions.

[0009] Furthermore, the base is provided with a pick-and-place slot.

[0010] Furthermore, the pressing member is generally ring-shaped, and the hollow area of ​​the pressing member corresponds to the placement groove.

[0011] Furthermore, the pressing member is connected to the base by screws.

[0012] Furthermore, the locking assembly includes an elastic element and a connected fixed element and a movable element. The movable element is movably disposed relative to the fixed element. The locking part includes a first claw disposed on the outside of the fixed element and a second claw disposed on the outside of the movable element. The elastic element contacts the fixed element and the movable element respectively to make the first claw and the second claw move away from each other.

[0013] Furthermore, the fixed member is rotatably connected to the movable member.

[0014] Furthermore, the fixed member and the movable member are connected by a guide post assembly, and the movable member is slidable along the axial direction of the guide post assembly.

[0015] Furthermore, the number of elastic elements is two, and the guide post assembly is located between the two elastic elements.

[0016] Furthermore, the fastener is provided with a lifting hole.

[0017] The beneficial effects of this utility model are as follows: the placement groove on the base is used to place the assembly obtained by bonding the frame and FPC; the pressing member cooperates with the base to clamp and fix the FPC in the area outside the frame; the locking component is used to lock the frame; the locking component is connected to a force measuring machine; the force measuring machine pulls the locking component along the thickness direction of the base to test the bonding force between the frame and the FPC. It can be seen that this adhesive force testing fixture for miniature speakers can help test the bonding force between the FPC and the frame, thereby facilitating the subsequent optimization of bonding materials and process parameters, and providing experimental data support for improving the interface bonding strength between the FPC and the frame. Attached Figure Description

[0018] Figure 1 A schematic diagram of the adhesive force testing fixture for miniature loudspeakers;

[0019] Figure 2 Exploded view of the adhesive force testing fixture for miniature loudspeakers;

[0020] Figure 3 A cross-sectional view of a fixture for testing the adhesive strength of a miniature loudspeaker;

[0021] Figure 4 for Figure 3 A magnified view of detail A.

[0022] Label Explanation:

[0023] 1. Base; 11. Placement slot; 12. Raised strip; 13. Gap; 14. Retrieval slot;

[0024] 2. Pressing components;

[0025] 3. Locking assembly; 31. Elastic element; 32. Fixing element; 321. First claw; 322. Lifting hole; 33. Movable element; 331. Second claw; 34. Guide post assembly;

[0026] 4. Assemblies; 41. Sink stand; 42. FPC;

[0027] 5. Screws. Detailed Implementation

[0028] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0029] Please refer to Figures 1 to 4 A fixture for testing the adhesive strength of miniature loudspeakers, comprising:

[0030] Base 1, wherein a placement groove 11 is provided on the base 1;

[0031] A pressing member 2 is detachably connected to the base 1, and the pressing member 2 is disposed on the outer side of the placement groove 11;

[0032] Locking component 3, which is located above the placement slot 11, has a locking part.

[0033] As can be seen from the above description, the beneficial effects of this utility model are as follows: the placement groove 11 on the base 1 is used to place the assembly 4 obtained by bonding the frame 41 and FPC42; the pressing member 2 cooperates with the base 1 to clamp and fix the FPC42 in the area outside the frame 41; the locking component 3 is used to lock the frame 41; the locking component 3 is connected to a force measuring machine; the force measuring machine pulls the locking component 3 along the thickness direction of the base 1, and the bonding force between the frame 41 and FPC42 can be tested. It can be seen that this adhesive force testing fixture for miniature loudspeakers can help test the bonding force between FPC42 and frame 41, thereby facilitating the subsequent optimization of bonding materials and process parameters, and providing experimental data support for improving the interface bonding strength between FPC42 and frame 41.

[0034] Furthermore, the base 1 is provided with a plurality of protrusions 12, and the plurality of protrusions 12 together form the placement groove 11, with a gap 13 between two adjacent protrusions 12.

[0035] As can be seen from the above description, in the assembly 4 obtained by bonding the basin frame 41 and FPC42, the area of ​​FPC42 that can be clamped and fixed extends to the outside of the placement groove 11 through the gap 13, thereby facilitating the pressing of the pressing member 2.

[0036] Furthermore, the base 1 is provided with a pick-up and put-down slot 14.

[0037] As described above, the pick-and-place slot 14 is used to facilitate the test personnel to pick up and place the pressure piece 2 on the base 1.

[0038] Furthermore, the pressing member 2 is generally in the shape of a ring frame, and the hollow area of ​​the pressing member 2 corresponds to the placement groove 11.

[0039] As can be seen from the above description, the ring-shaped pressing member 2 and the base 1 can better clamp and fix the FPC42, and also make it convenient for testers to connect the pressing member 2 and the base 1.

[0040] Furthermore, the pressing member 2 is connected to the base 1 by screws 5.

[0041] As can be seen from the above description, the pressing member 2 and the base 1 are fastened together by screws 5, which allows the pressing member 2 and the base 1 to clamp the FPC42 more stably.

[0042] Furthermore, the locking component 3 includes an elastic member 31 and a connected fixed member 32 and a movable member 33. The movable member 33 is movably disposed relative to the fixed member 32. The locking part includes a first claw 321 disposed on the outside of the fixed member 32 and a second claw 331 disposed on the outside of the movable member 33. The elastic member 31 contacts the fixed member 32 and the movable member 33 respectively to make the first claw 321 and the second claw 331 move away from each other.

[0043] As can be seen from the above description, locking component 3 has a simple structure and good working stability.

[0044] Furthermore, the fixed member 32 is rotatably connected to the movable member 33.

[0045] Furthermore, the fixing member 32 and the movable member 33 are connected by a guide post assembly 34, and the movable member 33 is slidable along the axial direction of the guide post assembly 34.

[0046] Furthermore, there are two elastic elements 31, and the guide post assembly 34 is located between the two elastic elements 31.

[0047] As can be seen from the above description, there are several options for the specific construction of the locking component 3.

[0048] Furthermore, the fixing member 32 is provided with a lifting hole 322.

[0049] As described above, an external force measuring machine can be connected to the locking component 3 through the lifting hole 322, which facilitates operation by the testing personnel.

[0050] Please refer to Figures 1 to 4 The first embodiment of this utility model is: a micro loudspeaker adhesive force testing fixture, used to test the adhesive force between the frame 41 and the FPC42.

[0051] The adhesive force testing fixture for miniature loudspeakers includes a base 1, a pressing member 2, and a locking assembly 3. The base 1 is provided with a placement groove 11. The pressing member 2 is detachably connected to the base 1 and is disposed on the outer side of the placement groove 11. The locking assembly 3 is located above the placement groove 11 and has a locking part.

[0052] The placement groove 11 is used to place the assembly 4 formed by bonding the basin stand 41 and FPC42. The pressing member 2 is connected to the base 1 and can clamp and fix the area of ​​FPC42 located outside the placement groove 11. The locking part of the locking component 3 is used to lock the basin stand 41.

[0053] In this embodiment, the base 1 is provided with a plurality of protrusions 12, and the plurality of protrusions 12 together form the placement groove 11. There is a gap 13 between two adjacent protrusions 12, and the gap 13 is used for a portion of the FPC42 to pass through, so that a portion of the FPC42 can extend to the outside of the placement groove 11.

[0054] To facilitate the testing personnel in taking and placing the pressure component 2, the base 1 is provided with a take-up slot 14.

[0055] Preferably, the pressing member 2 is in the shape of a ring frame, the hollow area of ​​the pressing member 2 corresponds to the placement groove 11, and the end of the locking component 3 can pass through the hollow area of ​​the pressing member 2 to connect to the basin stand 41.

[0056] In one or more embodiments, the pressing member 2 is connected to the base 1 by screws 5.

[0057] The locking assembly 3 includes an elastic element 31 and a connected fixed element 32 and a movable element 33. The movable element 33 is movably disposed relative to the fixed element 32. The locking part includes a first claw 321 disposed on the outside of the fixed element 32 and a second claw 331 disposed on the outside of the movable element 33. The elastic element 31 contacts the fixed element 32 and the movable element 33 respectively to make the first claw 321 and the second claw 331 move away from each other. The elastic element 31 may be a spring, a sheet, a rubber block, etc.

[0058] In some embodiments, the fixing member 32 is rotatably connected to the movable member 33. In this embodiment, the fixing member 32 and the movable member 33 are connected by a guide post assembly 34. The movable member 33 is slidable along the axial direction of the guide post assembly 34. To ensure that the movable member 33 is subjected to balanced forces, optionally, there are two elastic members 31, and the guide post assembly 34 is located between the two elastic members 31.

[0059] It should be noted that in some miniature speaker products, the frame 41 and the side washer are integrally injection molded into a single structure. In this integrated structure, the locking component 3 can indirectly lock the frame 41 by locking the side washer.

[0060] The fastener 32 is provided with a lifting hole 322 for connecting a force measuring machine.

[0061] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A fixture for testing the adhesive force of a miniature loudspeaker, characterized in that, include The base has a placement slot. A pressing member is detachably connected to the base, and the pressing member is disposed on the outer side of the placement groove; A locking component is located above the placement slot and has a locking part.

2. The adhesive force testing fixture for miniature loudspeakers according to claim 1, characterized in that, The base is provided with multiple protrusions, which together form the placement groove, and there is a gap between two adjacent protrusions.

3. The adhesive force testing fixture for miniature loudspeakers according to claim 1, characterized in that, The base is provided with a pick-up and put-down slot.

4. The adhesive force testing fixture for miniature loudspeakers according to claim 1, characterized in that, The pressing member is generally ring-shaped, and the hollow area of ​​the pressing member corresponds to the placement groove.

5. The adhesive force testing fixture for miniature loudspeakers according to claim 1, characterized in that, The pressing member is connected to the base by screws.

6. The adhesive force testing fixture for miniature loudspeakers according to claim 1, characterized in that, The locking assembly includes an elastic element and a connected fixed element and a movable element. The movable element is movably disposed relative to the fixed element. The locking part includes a first claw disposed on the outside of the fixed element and a second claw disposed on the outside of the movable element. The elastic element contacts the fixed element and the movable element respectively to make the first claw and the second claw move away from each other.

7. The adhesive force testing fixture for miniature loudspeakers according to claim 6, characterized in that, The fixed component is rotatably connected to the movable component.

8. The adhesive force testing fixture for miniature loudspeakers according to claim 6, characterized in that, The fixed member and the movable member are connected by a guide post assembly, and the movable member is slidable along the axial direction of the guide post assembly.

9. The adhesive force testing fixture for a miniature loudspeaker according to claim 8, characterized in that, The number of elastic elements is two, and the guide post assembly is located between the two elastic elements.

10. The adhesive force testing fixture for a miniature loudspeaker according to claim 6, characterized in that, The fastener is provided with a lifting hole.

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