Click durability test evaluation system

Abstract

The invention relates to a click durability test evaluation system. Comprising a shielding protection module, a click durability test module, a display control module, an electric driving module, a key force test module and a Y-axis slide rail. The click durability test module and the key force test module are arranged back to back, and a loading test platform of the click durability test module is shared through a Y-axis slide rail; the click durability test module comprises a key durability clamp and cross rods which are movably arranged on the key durability clamp, and each cross rod is provided with a plurality of groups of air cylinder adjusting assemblies; the electric driving module controls a cylinder adjusting assembly of the key force test module and a cylinder adjusting assembly of the click durability test module in a servo manner; and unattended force feedback test is realized through the key force test module. According to the invention, manual repeated pressing action is replaced by a pneumatic mode; subjective and objective hand feeling of the key is realized through force feedback; the test coverage of different models of products is realized by designing and adjusting the mounting block; and an abnormity alarm function is possessed.

Description

Technical Field

[0001] The invention belongs to the field of display testing, and in particular relates to a click durability testing and evaluation system. Background Art

[0002] The light guide plate is an important component of multimedia displays. It is located around the periphery of the liquid crystal display module. It realizes information prompts in night mode through dim characters and realizes human-computer interaction of the display through buttons and knobs in the panel. The buttons in the panel are the core key parts of the light guide plate, which are mainly composed of translucent plastic buttons and stainless steel pot pieces. Capacitive touch screens are standard components of high-generation airborne liquid crystal display modules. Accurately testing its click durability is a key action to evaluate the human-computer interaction capabilities of the display module. The service life of the light guide plate and capacitive touch screen needs to be accurately evaluated.

[0003] At present, in the field of avionics, the traditional manual pressing test is usually adopted, which is time-consuming and laborious for the operator, and is prone to visual fatigue, resulting in missed detection and false detection, and it is also impossible to objectively evaluate the subjective pressing feel. In the field of consumer electronics, although pneumatic buttons are used to simulate manual actions, and only a single point can be pressed each time, there is no effective feedback when the button (or touch) is abnormal, and it can only be manually checked after a certain number of presses, which not only consumes a certain amount of manpower, but also cannot accurately evaluate the product capabilities. Summary of the invention

[0004] The purpose of the present invention is to provide a click durability test and evaluation system, which replaces manual repetitive pressing actions with pneumatic automation, realizes batch evaluation by installing cylinder adjustment components and key heads; realizes the subjective objectivity of key feel through force feedback; and realizes test coverage of different models of products by designing and adjusting the installation block.

[0005] The technical solution to achieve the purpose of the present invention is: a click durability test evaluation system, including a shielding protection module, a click durability test module, a display control module, an electrical drive module, a key force test module and a Y-axis slide rail;

[0006] The click durability test module and the key force test module are arranged back to back, and the loading test platform of the click durability test module is shared through the Y-axis slide rail; the click durability test module includes a key durability fixture, and a movable crossbar arranged on the key durability fixture, and each crossbar is provided with multiple groups of cylinder adjustment components;

[0007] The electric drive module servo controls the cylinder adjustment components of the key force test module and the click durability test module; unattended force feedback testing is achieved through the key force test module; key tests of different sizes, types, and positions or touch click tests of different areas of the touch screen are achieved.

[0008] Furthermore, the shielding protection module is a shielding cover on the outer layer of the device, which is composed of a protective cover made of acrylic material and a switch window, and is used to physically protect the key force test module and the click durability test module.

[0009] Furthermore, a mounting hole for mounting a key durability fixture is arranged on the object test platform of the click durability test module; the key durability fixture comprises a fixture base, a cross bar and a cylinder adjustment assembly; the fixture base is connected to the object test platform through the mounting hole; the fixture base is provided with a hollow slide rail in the X direction, and is equipped with a plurality of cross bars to achieve movement in the X direction through the slide rail; the cross bar is integrated with a cylinder adjustment assembly, and a single cylinder adjustment assembly (26) simulates a pressing action by pneumatic reciprocating means; the cylinder adjustment assembly can achieve movement in the Y direction on the cross bar; the hollow slide rail, the cross bar and the cylinder adjustment assembly together form a pneumatic test mechanism with free array in the X direction and the Y direction.

[0010] Furthermore, the fixture base is arranged on the Z-axis slide rail, and the position of the fixture base on the linear slide rail is achieved by adjusting the lifting knob I, thereby realizing the position change of the key durable fixture in the Z direction and adjusting the plane level.

[0011] Furthermore, the cylinder adjustment assembly includes a cylinder I and a button head I. The electrical drive module controls the cylinder I and drives the button head I at the bottom of the cylinder I to perform a click durability test.

[0012] Furthermore, the cylinder adjustment assembly is installed on the transverse plate through the adjustment mounting block, so that the cylinder adjustment assembly can be adjusted and relatively fixed on the transverse plate. The number of cylinder adjustment assemblies and adjustment mounting blocks is set according to demand.

[0013] Furthermore, the key force test module includes a lifting knob II, a cylinder II, a key head II, a digital ruler and a force sensor;

[0014] The stroke height of the click key force test is controlled by the lifting knob Ⅱ and the digital display ruler. The cylinder Ⅱ and the key head Ⅱ constitute the action execution mechanism of the feedback force test. The test sensor force feedback provides real-time test data. If the test value is abnormal, that is, the test curve interferes with the threshold curve, an alarm is issued, and the number of presses when the abnormality occurs is recorded to obtain the key life.

[0015] Furthermore, it is used for durability testing of liquid crystal display modules or light guide plates.

[0016] Compared with the prior art, the present invention has the following significant advantages:

[0017] The pneumatic method replaces the manual repetitive pressing action, and the multi-point synchronous test can be achieved by adjusting the number and position of the mounting blocks, which can save a lot of manpower; the position of the mounting block can be adjusted to cover the product testing of different models (sizes), and the application range of the equipment is wider.

[0018] Force feedback is used to make the subjective feel of the buttons objective, thus preventing human subjective differences from affecting the test accuracy and avoiding fatigue errors.

[0019] By adjusting the position of the mounting block, different types of products can be tested.

[0020] The product test size covers a wide range, with the loading platform ranging from 5 inches to 25.6 inches.

[0021] With abnormal alarm function, it can realize unattended testing and improve testing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the click durability testing system of the present invention.

[0023] Figure 2 It is a schematic diagram of the structure of the click durability test module of the present invention.

[0024] Figure 3 This is a schematic diagram of the core structure of the click durability test module of the present invention.

[0025] Figure 4 This is a schematic diagram of testing a light guide plate button by the click durability test module of the present invention; wherein (a) is a three-dimensional diagram, and (b) is a top view.

[0026] Figure 5 It is a structural schematic diagram of the key force testing module of the present invention.

[0027] Figure 6 This is a typical key force feedback test curve.

[0028] Description of reference numerals:

[0029] 1-shielding protection module, 2-click durability test module, 3-display control module, 4-electric drive module, 5-display control test module, 6-key force test module, 7-Y-axis slide rail, 21-Z-axis slide rail, 22-lifting knob Ⅰ, 23-load test platform, 24-key durability fixture, 25-cross bar, 26-cylinder adjustment assembly, 27-light guide plate, 28-key head Ⅰ, 29-cylinder Ⅰ, 30-adjustment mounting block, 61-lifting knob Ⅱ, 62-cylinder Ⅱ, 63-key head Ⅱ, 64-digital display ruler, 65-force sensor. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0031] The present invention is mainly used for the click durability test of the light guide plate buttons and the liquid crystal display module capacitive touch screen. It can evaluate the click life of related products and has the ability to test the key force (key feel). The click durability test is performed pneumatically by a cylinder, and the number and frequency are set for cyclic testing. The key force test adopts the load analysis method, and the servo motor drives the force sensor to press down for force value testing, which can determine the degree of damage to the key. This system has a 20-way key impedance test, which can detect damaged keys.

[0032] The system is mainly composed of a click durability test module 2, a key force test module 6, an electrical drive module 4, a display control module 3 and a shielding protection part 1. Figure 1 The click durability test module 2 and the key force test module 6 are arranged "back to back" and share the object loading test platform 23 through the Y-axis slide rail 7. Each module is described in detail below.

[0033] like Figure 2 As shown, the click durability test module is mainly composed of a load test platform 23, a key durability fixture 24 (including a cylinder adjustment component), a Z-axis slide rail 21 and a lifting adjustment knob 22.

[0034] like Figure 3 As shown, the size of the load test platform 23 is 1000mm×400mm, and mounting holes are arranged on it for installing the key durability fixture 24; the key durability fixture 24 consists of a fixture base, a cross bar 25 and a cylinder adjustment assembly 26. The fixture base is connected to the load test platform 23 through the mounting hole. There is a hollow slide rail in the X direction on the fixture base, and the 7 cross bars 25 equipped can realize the X-direction movement through the slide rail. The cylinder adjustment assembly 26 is integrated on the cross bar 25, and a single cylinder adjustment assembly 26 can simulate the pressing action by pneumatic reciprocating. The cylinder adjustment assembly 26 can realize Y-direction movement on the cross bar 25. The slide rail, cross bar 25 and cylinder adjustment assembly 26 together form a pneumatic testing mechanism with free array in the X and Y directions. According to the parameters of existing products, the minimum spacing in the X direction is designed to be 18mm, and the minimum spacing in the Y direction is 10mm, which can realize the installation and fixation of existing light guide plates and screen assemblies of different models, such as Figure 4 The figure shows a test diagram of a 7.1-inch light guide plate key. The combination of the crossbar 25, the adjustment mounting block and the cylinder can realize key tests of different sizes, types and positions or touch click tests of different areas of the touch screen. The key head simulates human fingers, and the reciprocating pneumatic motion realizes the click durability test.

[0035] The linear guide rail 21 and the lifting adjustment knob 22 work together to change the position of the key durable fixture 24 in the Z direction, adjust the plane level, and further precisely control the stroke of the click test.

[0036] like Figure 5 As shown, the key force test module 6 is on the back of the click durability test module 2, and shares the object test platform 23 through the Y-axis slide rail 7. The key force test module 6 is mainly composed of a lifting knob II 61, a cylinder II 62, a key head II 63, a digital ruler 64 and a test sensor 65. The stroke height of the click test can be precisely controlled by the lifting knob II 61 and the digital ruler 64. The cylinder II 62 and the key head II 63 constitute the main action execution mechanism of the feedback force test. The test sensor 65 provides real-time test data for force feedback.

[0037] Figure 6 This is a typical key force test module curve. The innermost and outermost circles are the key force test thresholds (threshold curves), which represent the feedback data when the key force is too small and too large, respectively. The test feedback forces between the innermost and outermost circles are all qualified values. When the key light guide plate or touch screen is undergoing an unattended force feedback test, if the test value is abnormal (that is, the test curve interferes with the threshold curve), the device will sound an alarm, record the number of presses when the abnormality occurs, and obtain the key life. The device warning red light is on for easy observation by personnel.

[0038] The electrical drive module is located in the storage space at the lower end of the test system, and controls the key force test and click durability test through the integrated PLC circuit servo.

[0039] The display control test module is located at both ends of the equipment and is mainly composed of a display control terminal (display) and corresponding test software. The main functions of the display control test module are software control of the test process, display of test information and corresponding data recording. When a test deviation occurs (such as test abnormality), the drive warning light comes on.

[0040] The shielding protection part is the outer shielding cover of the device, which is mainly composed of an acrylic protective cover and a corresponding switch window, and plays a role in physical protection of the key force test module and the click durability test module. The transparent acrylic can observe the test process in real time.

Claims

1. A click durability test evaluation system, characterized in that: It comprises a shielding protection module (1), a click durability test module (2), a display control module (3), an electrical drive module (4), a key force test module (6) and a Y-axis slide rail (7); The click durability test module (2) and the key force test module (6) are arranged back to back and share a loading test platform (23) of the click durability test module (2) through a Y-axis slide rail (7); the click durability test module (2) comprises a key durability fixture (24), a cross bar (25) movably arranged on the key durability fixture (24), and each cross bar (25) is provided with a plurality of groups of cylinder adjustment components (26); The electric drive module (4) servo controls the cylinder adjustment components (26) of the key force test module and the click durability test module; unattended force feedback testing is achieved through the key force test module (6); and key tests of different sizes, types and positions or touch click tests of different areas of the touch screen are achieved.

2. The system according to claim 1, characterized in that The shielding protection module (1) is a shielding cover on the outer layer of the device, which is composed of a protective cover made of acrylic material and a switch window, and is used for physical protection of the key force test module and the click durability test module.

3. The system according to claim 2, characterized in that The object test platform of the click durability test module (2) is provided with a mounting hole for mounting a key durability fixture (24); the key durability fixture (24) comprises a fixture base, a crossbar (25) and a cylinder adjustment assembly (26); the fixture base is connected to the object test platform (23) through the mounting hole; the fixture base is provided with a hollow slide rail in the X direction, and is equipped with a plurality of crossbars (25) to achieve X-direction movement through the slide rail; the crossbar (25) is integrated with a cylinder adjustment assembly (26), and a single cylinder adjustment assembly (26) simulates a pressing action through a pneumatic reciprocating manner; the cylinder adjustment assembly (26) can achieve Y-direction movement on the crossbar (25); the hollow slide rail, the crossbar (25) and the cylinder adjustment assembly (26) together form a pneumatic test mechanism with surface array freedom in the X direction and the Y direction.

4. The system according to claim 3, characterized in that The fixture base is arranged on the Z-axis slide rail, and the position of the fixture base on the linear slide rail (21) is realized by adjusting the lifting knob I (22), thereby realizing the position change of the key durable fixture (24) in the Z direction and adjusting the plane level.

5. The system according to claim 4, characterized in that The cylinder adjustment assembly (26) comprises a cylinder I (29) and a key head I (28). The electric drive module (4) controls the cylinder I (29) and drives the key head I (28) at the bottom end of the cylinder I (29) to perform a click durability test.

6. The system according to claim 5, characterized in that The cylinder adjustment assembly (26) is installed on the transverse plate (25) through the adjustment mounting block (30), so that the position of the cylinder adjustment assembly (26) on the transverse plate (25) can be adjusted and relatively fixed. The number of cylinder adjustment assemblies (26) and adjustment mounting blocks (30) is set according to demand.

7. The system according to claim 6, characterized in that The key force testing module (6) comprises a lifting knob II (61), a cylinder II (62), a key head II (63), a digital ruler (64) and a force sensor (65); The stroke height of the click key force test is controlled by the lifting knob II (61) and the digital scale (64), the cylinder II (62) and the key head II (63) constitute the action execution mechanism of the feedback force test, and the test sensor (65) provides real-time test data through force feedback; if the test value is abnormal, that is, the test curve interferes with the threshold curve, an alarm is issued, and the number of presses when the abnormality occurs is recorded to obtain the key life.

8. The system according to any one of claims 1 to 7, characterized in that: Used for durability testing of LCD modules or light guide plates.

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