Positioning tool for touch screen testing

Abstract

The utility model discloses a positioning tool for touch screen test, including the pedestal for bearing the touch screen of measurement, and the pedestal includes: zero point corner pedestal and the sliding pedestal of placement. Through the angle adjustable design of lateral positioning mechanism and longitudinal positioning mechanism, cooperate the telescopic lug of having on the side baffle, can self -adaptation the real profile of workpiece edge, avoid the limitation of rigid stopper, can perfect adaptation different size, even with the touch screen of arc edge, realized the real multi -point, no stress, high -precision contact positioning, and the versatility is extremely strong, through setting can from zero point corner pedestal top surface rise to the same height's telescopic pin, thereby can build a standard not easy change's datum plane, improve the efficiency of placement and positioning, also maximum limit reduced the randomness and error of artificial operation.

Description

Technical Field

[0001] This utility model relates to the field of touch screen positioning technology, and in particular to a positioning fixture for touch screen testing. Background Technology

[0002] In the precision electronics manufacturing industry, touch screens serve as the core human-machine interface. Testing their size, shape, and function during the finished or semi-finished product stage is crucial for ensuring final product quality and user experience. The accuracy and reliability of the positioning fixtures used for this purpose directly determine the success or failure of the entire testing process. However, existing touch screen testing positioning fixtures face a contradiction between the rigidity of XY-axis two-dimensional positioning and the diversity of workpieces when dealing with increasingly stringent requirements for precision, non-destructive testing, and flexible production. Traditional positioning fixtures often use fixed, machined blocks or positioning grooves as the XY-axis positioning reference. Rigid references lack adaptability; if the size of the touch screen under test changes, or its edges are not perfectly straight (e.g., with 2.5D curved edges), it can lead to inaccurate positioning, stress concentration, or even damage to the workpiece. Designing a dedicated high-precision fixture for each workpiece specification is extremely costly and cannot meet the flexible production needs of modern manufacturing industries, which require multiple varieties, small batches, and rapid line changes.

[0003] Furthermore, there is a conflict between the Z-axis reference plane and the workpiece unevenness. Touch screens (especially large or ultra-thin models) may have micron-level warping or unevenness. Traditional positioning fixtures simply place the workpiece under test on a flat substrate, which cannot actively eliminate this warping. Moreover, the flatness of the reference plane may change due to external forces or wear over long-term use. If used in conjunction with automated test probes or vision systems, unevenness in the Z-axis direction can lead to test point defocusing, pressure sensing inaccuracy, or incorrect detection data, seriously affecting the reliability of test results. In the existing operating procedures, after the operator places the workpiece into the fixture, they can usually only "assume" that it has perfectly aligned with all reference points, and there is a lack of an effective feedback mechanism to confirm whether the positioning is truly in place. Therefore, there is an urgent need for a positioning fixture for touch screen testing. Utility Model Content

[0004] The purpose of this utility model is to address the deficiencies in the existing technology by proposing a positioning fixture for touch screen testing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A positioning fixture for touchscreen testing includes a base for supporting the touchscreen under test. The base includes:

[0007] The zero-point corner base is equipped with a lateral positioning mechanism and a longitudinal positioning mechanism for two-dimensional positioning of the touch screen in the X and Y axes, and a Z-axis reference mechanism for Z-axis reference positioning of the touch screen.

[0008] And a sliding base is placed adjacent to the zero-point corner base. The top surface of the sliding base is provided with a dynamic trajectory guiding mechanism for guiding the sliding trajectory of the touch screen.

[0009] The top surface of the zero-corner base has the same angle of inclination as the top surface of the sliding base, so as to use gravity to assist the touchscreen in sliding towards the zero-corner base.

[0010] Furthermore, the lateral positioning mechanism includes at least two side baffles connected by a pivot and whose angles can be adjusted relative to each other;

[0011] Several retractable protrusions are provided on the side of the side panel facing the touch screen.

[0012] Furthermore, the longitudinal positioning mechanism includes an adjusting base and at least two short plates mounted on the adjusting base;

[0013] Each short plate is movably mounted on the adjusting base via a sliding block, and its angle can be adjusted.

[0014] Furthermore, the Z-axis reference mechanism includes multiple telescopic pins that can be raised from the top surface of the zero-point corner base to the same height. The telescopic pins are normally in a retracted state, and in the retracted state, the apex of the telescopic pin does not exceed the top surface of the zero-point corner base.

[0015] Furthermore, the zero-point corner base is also equipped with a magnetic attraction mechanism for attaching the touchscreen downwards and adhering it to the top of the telescopic pin.

[0016] Furthermore, each telescopic pin has a trigger sleeve at its tip;

[0017] When the trigger sleeve is applied to the touchscreen and pressure is applied to it, it can trigger the corresponding telescopic pin to generate a visible or detectable bonding status signal.

[0018] Furthermore, the dynamic trajectory guidance mechanism includes multiple sliding plates arranged in an array on the top surface of the sliding base;

[0019] Each sliding plate is rotatably mounted on a sliding base via a rotating mounting block, so that the guide trajectory of its surface can be changed by synchronously or asynchronously adjusting the angle of multiple sliding plates.

[0020] Furthermore, a retractable tilting plate is provided between the zero-point corner base and the sliding base, and the tilting plate is linked with the magnetic attraction mechanism.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] With adjustable angles for the lateral and longitudinal positioning mechanisms, and telescopic protrusions on the side baffles, it can adaptively conform to the true contour of the workpiece edge, avoiding the limitations of rigid blocks. It can perfectly adapt to touchscreens of different sizes, even those with curved edges, achieving true multi-point, stress-free, and high-precision contact positioning with extremely strong versatility. By setting telescopic pins that can rise from the top surface of the base at the zero-point corner to the same height, a standard and unchanging reference plane can be constructed, ensuring that the entire touchscreen surface is at the same precise Z-axis height. This ensures accurate reference while meeting the requirements for automated testing scenarios. In addition, during the positioning process, the telescopic pins and guiding mechanisms are used to achieve fitting status feedback and complete fitting during positioning, preventing deviations that may occur during gravity sliding and improving the efficiency of placement and positioning. It also minimizes the randomness and errors of human operation. Attached Figure Description

[0023] The accompanying drawings are provided to give a better understanding of the present invention and form part of the specification. They are used in conjunction with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof.

[0024] Figure 1 This is one of the overall structural schematic diagrams of the positioning fixture for touch screen testing proposed in this utility model;

[0025] Figure 2 This is the second schematic diagram of the overall structure of the positioning fixture for touch screen testing proposed in this utility model;

[0026] Figure 3 This is a schematic diagram showing the adjustment and change of the side positioning structure of the positioning fixture for touch screen testing proposed in this utility model.

[0027] Figure 4 This is a schematic diagram of the zero-point corner base of the positioning fixture for touch screen testing proposed in this utility model.

[0028] In the diagram: 10. Zero-point corner base; 11. Lateral positioning mechanism; 12. Longitudinal positioning mechanism; 20. Axis reference mechanism; 21. Telescopic pin; 22. Trigger sleeve; 30. Sliding base; 31. Dynamic trajectory guiding mechanism; 40. Inclined telescopic plate; 110. Side baffle; 111. Rotating shaft; 112. Telescopic protrusion; 120. Adjusting base; 121. Short plate; 122. Sliding block; 310. Sliding plate; 311. Rotating mounting block. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Reference Figure 1-4 This utility model discloses a positioning fixture for touchscreen testing, which is divided into two cooperating areas: a zero-point corner base 10 and a sliding base 30 adjacent to the zero-point corner base 10. The zero-point corner base 10 integrates three main positioning mechanisms: a lateral positioning mechanism 11 and a longitudinal positioning mechanism 12 for two-dimensional positioning of the touchscreen along the X and Y axes, and a Z-axis reference mechanism 20 for Z-axis reference positioning of the touchscreen. The sliding base 30 serves as a guiding and coarse positioning area before positioning, and its top surface is provided with a dynamic trajectory guiding mechanism 31 for guiding the sliding trajectory of the touchscreen.

[0032] In order to achieve automatic workpiece positioning using physical principles, the top surface of the zero-point corner base 10 and the top surface of the sliding base 30 are designed to have the same slight inclination. The operator first places the touch screen to be tested on the sliding base 30, and the dynamic trajectory guiding mechanism 31 guides it to slide towards the zero-point corner base 10. Due to the overall inclination, the touch screen will naturally move towards the positioning zero point of the zero-point corner base 10 under the action of gravity. Finally, under the coordinated action of the lateral positioning mechanism 11, the longitudinal positioning mechanism 12 and the Z-axis reference mechanism 20, high-precision three-dimensional positioning and locking of the touch screen is achieved.

[0033] The XY axis positioning adopts a highly flexible adaptive structure to adapt to touch screens of different sizes and even those with curved edges. The lateral positioning mechanism 11 is used to define the X-axis reference and includes at least two side baffles 110. The side baffles 110 are connected by a pivot 111 and can be adjusted at an angle to fit straight or curved edges. The side of the side baffles 110 facing the touch screen is also provided with several telescopic protrusions 112. The telescopic protrusions 112 can have different telescopic strokes, but their final retraction or extension positions form a straight line or a preset curve, thereby achieving multi-point adaptive contact with the edge of the workpiece.

[0034] The longitudinal positioning mechanism 12 is used to define the Y-axis reference and adopts a similar adjustable structure, including an adjustment base 120 and at least two short plates 121 mounted thereon. Each short plate 121 is movably mounted on the adjustment base 120 via a sliding block 122 and can also be angled. Before positioning, the operator can pre-adjust the angle and position of each baffle in the lateral positioning mechanism 11 and the longitudinal positioning mechanism 12 according to the size and shape of the touch screen to be tested. When the touch screen is brought closer, the baffle with the telescopic protrusion 112 or the adjustable angle can better fit the edge of the workpiece, achieving stress-free, high-precision multi-point contact positioning with strong versatility.

[0035] Z-axis reference mechanism 20 includes multiple telescopic pins 21 that can be raised from the top surface of the zero-point corner base 10 to the same absolute height. In the initial state, the apex of these telescopic pins 21 does not exceed the top surface of the base, which is convenient for placing the workpiece. During positioning, they will rise synchronously and jointly construct a more accurate and ideal Z-axis reference plane in the air than the base plane to solve the problem that the plane may have impurities or the reference plane may be uneven.

[0036] Inside the zero-point corner base 10, there is also a magnetic attraction mechanism to solve the problem of slight warping or unevenness that the touch screen itself may have. The metal parts that cooperate with the touch screen are configured according to the needs. When the telescopic pin 21 rises to support the touch screen, the magnetic attraction mechanism is activated. The generated magnetic force will attract the back of the touch screen vertically downward, so that it is completely and flatly attached to the plane formed by the tops of all the telescopic pins 21.

[0037] To monitor the fit, each telescopic pin 21 is equipped with a trigger sleeve 22 at its top. The trigger sleeve 22 integrates a simple, adaptable mechanical or optical structure. When the back of the touch screen is fully and evenly attached to all the telescopic pins 21 and sufficient pressure is applied to them, each trigger sleeve 22 will be triggered, thereby generating a visible or detectable fit status signal for its corresponding telescopic pin 21. For example, a miniature LED light at the bottom of the pin is lit, or a mechanical indicator mark is flipped.

[0038] In a specific example, the touchscreen is first supported by the raised telescopic pin 21, and then the magnetic attraction mechanism is activated to press it down flat. At this time, the operator only needs to observe whether all the contact status signals corresponding to all the telescopic pins 21 are triggered, such as whether all the indicator lights are lit. If a certain light is not lit, it indicates that the contact at that point is poor, and the touchscreen has deformation or positioning problems. Thus, the invisible state of whether it is flat is transformed into an intuitive and visual signal, ensuring the accuracy of positioning.

[0039] The dynamic trajectory guiding mechanism 31 on the sliding base 30 makes the touch screen smoother and more accurate during initial placement and sliding. It includes multiple sliding plates 310 arranged in a matrix or specific pattern array on the top surface of the sliding base 30. Each sliding plate 310 is rotatably mounted on the base by a rotating mounting block 311, so that it can change its angle like a tiny, tiltable platform. By adjusting the angle of these sliding plates 310 synchronously or asynchronously, a specific guiding trajectory can be formed on the entire surface of the sliding base 30. For example, all sliding plates 310 can be slightly tilted towards the zero corner, thereby providing the touch screen with an active sliding tendency pointing towards the zero corner on the basis of gravity, preventing it from deviating during sliding.

[0040] A sophisticated timing linkage mechanism is also incorporated to ensure that the touchscreen is perfectly aligned with the Y-axis reference before being magnetically locked. A retractable tilting plate 40 is positioned between the zero-point corner base 10 and the sliding base 30. The movement of this tilting plate 40 is linked to the magnetic attraction mechanism. After the touchscreen, guided by gravity and a dynamic trajectory, has essentially reached the zero-point corner and the Z-axis reference pin has risen, the operator activates the magnetic attraction mechanism. Simultaneously, the linkage is triggered, driving the tilting plate 40 to produce a small, final, and gentle axial movement, applying a final pushing force to bring the touchscreen tightly close to the longitudinal positioning mechanism 12. This ensures that the workpiece's position in the XY plane is absolutely precise when fully magnetically attracted and fixed.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A positioning fixture for touchscreen testing, comprising a base for supporting the touchscreen under test, characterized in that, The base includes: Zero-point corner base (10), the zero-point corner base (10) is provided with a lateral positioning mechanism (11) and a longitudinal positioning mechanism (12) for two-dimensional positioning of the touch screen in X-axis and Y-axis, and a Z-axis reference mechanism (20) for Z-axis reference positioning of the touch screen; And a sliding base (30) is provided adjacent to the zero-point corner base (10), and the top surface of the sliding base (30) is provided with a dynamic trajectory guiding mechanism (31) for guiding the sliding trajectory of the touch screen; The top surface of the zero-corner base (10) has the same inclination as the top surface of the sliding base (30) so that the touch screen can slide towards the zero-corner base (10) with the aid of gravity.

2. The positioning fixture for touchscreen testing according to claim 1, characterized in that, The lateral positioning mechanism (11) includes at least two side baffles (110) connected by a pivot (111) and whose angles can be adjusted to each other; The side panel (110) facing the touch screen has several telescopic protrusions (112).

3. The positioning fixture for touchscreen testing according to claim 1, characterized in that, The longitudinal positioning mechanism (12) includes an adjusting base (120) and at least two short plates (121) mounted on the adjusting base (120); Each of the aforementioned short plates (121) is movably mounted on the adjusting base (120) via a sliding block (122) and its angle is adjustable.

4. The positioning fixture for touchscreen testing according to claim 1, characterized in that, The Z-axis reference mechanism (20) includes multiple telescopic pins (21) that can be raised from the top surface of the zero-point corner base (10) to the same height. The telescopic pins (21) are normally in a retracted state, and in the retracted state, the apex of the telescopic pins (21) does not exceed the top surface of the zero-point corner base (10).

5. The positioning fixture for touchscreen testing according to claim 4, characterized in that, The zero-point corner base (10) is also provided with a magnetic attraction mechanism for adsorbing the touch screen downwards and attaching it to the top of the telescopic pin (21).

6. The positioning fixture for touchscreen testing according to claim 5, characterized in that, Each of the telescopic pins (21) is provided with a trigger sleeve (22) at its top end; When the touchscreen is attached and pressure is applied, the trigger sleeve (22) can trigger the corresponding telescopic pin (21) to generate a visible or detectable attachment status signal.

7. The positioning fixture for touchscreen testing according to claim 1, characterized in that, The dynamic trajectory guidance mechanism (31) includes multiple sliding plates (310) arranged in an array on the top surface of the sliding base (30); Each of the sliding plates (310) is rotatably mounted on the placement sliding base (30) by means of a rotating mounting block (311) to change the guide trajectory of its surface by adjusting the angle of the plurality of sliding plates (310) synchronously or asynchronously.

8. The positioning fixture for touchscreen testing according to claim 5, characterized in that, Between the zero-point corner base (10) and the sliding base (30), a retractable inclined telescopic plate (40) is also provided, which is linked to the magnetic attraction mechanism.

Images