A capacitive screen sensor test fixture
By using a unique clamping unit and rack and pinion limiting structure, combined with a rotatable rotating frame and a sliding pressure bar, the stress concentration and compatibility problems of traditional capacitive touchscreen sensor test fixtures are solved, achieving stable fixation, preventing scratches, and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI LIANCHUANG (WANNIAN) ELECTRONICS CO LTD
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional capacitive touchscreen sensor testing fixtures suffer from stress concentration during the clamping process, which can lead to component breakage or scratches. They also have poor compatibility, are complex to operate, and are inefficient, making them difficult to adapt to sensors of different sizes and shapes.
Employing a unique clamping unit and rack and pinion limiting structure, combined with a rotatable rotating frame and a sliding pressure bar, stable fixation is achieved through flexible contact and rack and pinion engagement, ensuring testing accuracy and ease of operation.
This achieves stable fixation of the sensor, preventing displacement and scratches, improving the accuracy of test data and production efficiency, reducing the defect rate, and enhancing the versatility and ease of operation of the fixture.
Smart Images
Figure CN224536107U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of testing fixture technology, specifically a testing fixture for a capacitive touchscreen sensor. Background Technology
[0002] In the field of electronic device manufacturing, capacitive touchscreens are important human-computer interaction components. The capacitive touchscreen sensor is the core component of the capacitive touchscreen, responsible for sensing and transmitting the user's touch signals. Therefore, accurate testing of the capacitive touchscreen sensor is a key step in ensuring the quality of the capacitive touchscreen.
[0003] Currently, in the testing process of capacitive touchscreen sensors, the fixture needs to ensure that the sensor surface is uniformly pressed without displacement to avoid poor contact or test data deviation. Traditional test fixtures mostly use bolts for direct clamping or fixed limiting structures, and use rigid pressure plates to apply pressure as a whole. This results in poor compatibility with sensors of different sizes, thicknesses, or irregular shapes. Stress concentration between the pressure plate and the parts can easily lead to sensor breakage or scratches. At the same time, the opening and closing structure of the fixture is complex, with many operation steps and low testing efficiency. In view of the shortcomings of the existing technology, this utility model provides a capacitive touchscreen sensor test fixture to solve the above problems. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a capacitive touchscreen sensor testing fixture with a stable and reliable fixing method. Through a unique clamping unit and rack and pinion limiting structure, it ensures that the parts do not shift during testing, guaranteeing accurate test data. Operation is simple and quick; the clamping unit makes limiting operations easy to complete; the rotatable rotating frame and sliding pressure rod can adapt to parts of various specifications and shapes, improving versatility and production efficiency; the bottom of the pressure rod makes flexible contact with the parts, preventing damage and reducing the defect rate.
[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a capacitive touch screen sensor testing fixture, including a fixture platform, a rotating frame rotatably connected to the fixture platform, and a plurality of pressure rods slidably connected to the rotating frame, the pressure rods being used to press and limit the capacitive touch screen sensor components;
[0006] The rotating frame is provided with a limiting rod, and the fixture table is provided with a clamping unit for limiting the limiting rod.
[0007] The pressure rod has sliders at both ends, and a second rack is provided on the slider. The rotating frame is provided with a first rack for limiting the second rack. When the pressure rod does not limit the capacitive screen sensor component, the second rack and the first rack do not contact each other.
[0008] Preferably, the clamping unit includes:
[0009] An inclined plate is fixedly connected to the fixture platform;
[0010] A lead screw is threadedly connected to the inclined plate;
[0011] A clamping plate is rotatably connected to the lead screw and slidably connected to the inclined plate. The clamping plate is used to apply a pushing force to the limiting rod.
[0012] Preferably, a guide rod is fixedly connected to the plate, and the guide rod passes through the inclined plate and extends outward.
[0013] Preferably, the bottom of the pressure rod is provided with a rubber pad.
[0014] Preferably, the rotating frame is fixedly connected with a track groove for limiting the movement of the slider.
[0015] Preferably, the fixture platform is provided with a fixed shaft for limiting the rotation frame.
[0016] Its beneficial effects are as follows:
[0017] This capacitive touchscreen sensor test fixture features a stable and reliable fixing method. Its unique clamping unit and rack-and-pinion limiting structure ensure that parts do not shift during testing, guaranteeing accurate test data. Operation is simple and quick; the clamping unit makes limiting operations easy, while the rotatable rotating frame and sliding pressure bar can accommodate parts of various sizes and shapes, improving versatility and production efficiency. The bottom of the pressure bar makes flexible contact with the part, preventing damage and reducing the defect rate. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the lifting of the rotating frame of this utility model;
[0021] Figure 3 This is a side view of the overall structure of this utility model;
[0022] Figure 4 This is a schematic diagram of the structure of the first and second racks of this utility model;
[0023] Figure 5 This is a schematic diagram of the pressing unit of this utility model.
[0024] In the diagram: 1. Fixture table; 11. Fixed shaft; 2. Rotating frame; 21. Track groove; 22. First rack; 3. Limiting rod; 4. Pressure rod; 41. Slider; 411. Second rack; 42. Rubber pad; 5. Clamping unit; 51. Inclined plate; 52. Lead screw; 53. Clamping plate; 54. Guide rod. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0026] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.
[0027] This utility model discloses a capacitive touchscreen sensor testing fixture, according to the attached... Figure 1-5 As shown, the fixture includes a jig table 1, on which a rotating frame 2 is rotatably connected via a fixed shaft 11. The rotating frame 2 can be lifted around the fixed shaft 11. The surface of the rotating frame 2 is provided with a track groove 21. Several sets of pressure rods 4 are slidably connected to the track groove 21 via sliders 41 at both ends. The pressure rods 4 are used to press and limit the capacitive touchscreen sensor components, and their bottoms are provided with scratch-resistant rubber pads 42. A limiting rod 3 is provided on the rotating frame 2, and a clamping unit 5 is installed on the jig table 1 to lock the limiting rod 3.
[0028] According to the appendix Figure 4 As shown, the sliders 41 at both ends of the pressure rod 4 are provided with second racks 411, and the surface of the rotating frame 2 is fixed with a first rack 22 parallel to the track groove 21. When the pressure rod 4 is not pressed down, the second rack 411 is separated from the first rack 22; when the pressure rod 4 slides down to the working position, the second rack 411 engages with the first rack 22, forming a self-locking mechanism to prevent displacement.
[0029] According to the appendix Figure 5 As shown, the clamping unit 5 includes: an inclined plate 51 fixed on the fixture table 1, a lead screw 52 threaded through the inclined plate 51, and a clamping plate 53 rotatably connected to the end of the lead screw 52. The clamping plate 53 achieves axial limiting through the guide rod 54 passing through the inclined plate 51. When the lead screw 52 is rotated, the clamping plate 53 slides along the inclined surface of the inclined plate 51, applying a vertically downward pressure to the limiting rod 3, thus locking the rotating frame 2.
[0030] According to the appendix Figure 1 , 3As shown, specifically disclosed: when the rotating frame 2 is lifted, the pressure rod 4 can be adjusted along the track groove 21 to accommodate sensors of different sizes; the fixed shaft 11 of the fixture table 1 provides a fulcrum for the rotating frame 2.
[0031] According to the appendix Figure 5 As shown, the inclined plate 51 of the clamping unit 5 is designed with an angle that converts the rotational motion of the lead screw 52 into the downward pressure of the clamping plate 53, and the guide rod 54 ensures that the clamping plate 53 moves linearly without deflection.
[0032] According to the appendix Figure 4 As shown, it is particularly important to emphasize that: the rubber pad 42 of the pressure rod 4 should not directly contact the sensor surface; the separate design of the first rack 22 and the second rack 411 ensures that there is no resistance when adjusting the pressure rod 4, and the adjustment process is convenient. After the first rack 22 and the second rack 411 are engaged, it ensures that the position of the multiple pressure rods 4 is accurately limited and will not shift.
[0033] According to the appendix Figure 3 , 5 As shown, it is particularly important to emphasize that: the contact surface between the clamping plate 53 and the limiting rod 3 is a plane, which facilitates the application of downward pressure and thrust to the limiting rod 3; the threaded engagement of the lead screw 52 provides a mechanical force amplification effect.
[0034] The working principle of this capacitive touchscreen sensor test fixture is as follows:
[0035] When the pressure rod 4 is pressed down, the second rack 411 of the slider 41 meshes with the first rack 22 of the rotating frame 2 to form a rack locking structure, preventing the pressure rod 4 from loosening during the test.
[0036] After the rotating frame 2 is closed, the screw 52 of the clamping unit 5 is tightened, driving the clamping plate 53 to move down along the inclined plate 51, applying vertical pressure to the limiting rod 3, so that the rotating frame 2 is in close contact with the fixture table 1.
[0037] The rubber pad 42 at the bottom of the pressure bar 4 provides flexible pressure to avoid damaging the sensor surface.
[0038] The steps for using this capacitive touchscreen sensor test fixture are as follows:
[0039] Lift the rotating frame 2 and place the capacitor screen sensor to be tested in the corresponding area of the fixture table 1;
[0040] Close the rotating frame 2 so that the limiting rod 3 is engaged below the clamping unit 5;
[0041] Slide each pressure rod 4 to the edge of the sensor, and press down the pressure rod 4 until the first rack 22 and the second rack 411 are engaged and locked.
[0042] Tighten the screw 52 of the clamping unit 5 so that the clamping plate 53 presses against the limiting rod 3;
[0043] Perform electrical tests, and then reverse the process to disassemble the workpiece.
[0044] The beneficial effects of this capacitive touchscreen sensor testing method are as follows:
[0045] High-efficiency positioning: Adjustable pressure bar 4 adapts to different sensor sizes, and rack and pinion engagement provides stable locking force;
[0046] Easy to operate: The rotating frame 2 has a lifting design that makes it easy to pick up and put down workpieces, and the lead screw 52 and clamping unit 5 are labor-saving and reliable;
[0047] Damage protection: Rubber pad 42 prevents damage to the sensor surface, and guide rod 54 ensures tight clamping without deviation;
[0048] Stable structure: The double rack self-locking mechanism and the inclined plane clamping mechanism work together to prevent workpiece displacement during testing.
[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.
[0050] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A capacitive touchscreen sensor testing fixture, comprising a fixture platform (1), wherein a rotating frame (2) is rotatably connected to the fixture platform (1), characterized in that: Several sets of pressure rods (4) are slidably connected on the rotating frame (2), and the pressure rods (4) are used to press and limit the capacitive screen sensor components; The rotating frame (2) is provided with a limiting rod (3), and the fixture table (1) is provided with a clamping unit (5) for limiting the limiting rod (3). The pressure rod (4) has sliders (41) at both ends. The sliders (41) have a second rack (411). The rotating frame (2) has a first rack (22) for limiting the second rack (411). When the pressure rod (4) does not limit the capacitive screen sensor component, the second rack (411) and the first rack (22) do not contact each other.
2. The capacitive touchscreen sensor testing fixture according to claim 1, characterized in that, The clamping unit (5) includes: Inclined plate (51) is fixedly connected to the fixture table (1); A lead screw (52) is threaded onto the inclined plate (51); The clamping plate (53) is rotatably connected to the lead screw (52) and slidably connected to the inclined plate (51). The clamping plate (53) is used to apply a pushing pressure to the limiting rod (3).
3. The capacitive touchscreen sensor testing fixture according to claim 2, characterized in that, A guide rod (54) is fixedly connected to the plate (53), and the guide rod (54) passes through the inclined plate (51) and extends outward.
4. The capacitive touchscreen sensor testing fixture according to claim 1, characterized in that, The bottom of the pressure rod (4) is provided with a rubber pad (42).
5. A capacitive touchscreen sensor testing fixture according to claim 1, characterized in that, The rotating frame (2) is fixedly connected to a track groove (21) for limiting the slider (41).
6. The capacitive touchscreen sensor testing fixture according to claim 1, characterized in that, The fixture table (1) is provided with a fixed shaft (11) for limiting the rotation frame (2).