A glass cover plate bending fatigue test device

Abstract

This utility model discloses a glass cover plate bending fatigue testing device, including a housing, a motor, and two adsorption components arranged left and right. One adsorption component is fixedly connected to the housing, and the other adsorption component is rotatably connected to the housing and driven by the motor to realize the opening and closing of the two adsorption components. The adsorption component includes an adsorption plate and a pressing mechanism. The upper side of the adsorption plate is provided with a vacuum suction hole. The pressing mechanism is located at the inner edge of the adsorption plate and includes a tensioner and a pressure band. Limiting grooves are provided on the front and rear sides of the adsorption plate. The width of the limiting grooves is adapted to the width of the pressure band. The pressure band passes over the upper edge of the adsorption plate in the front-rear direction. Both ends of the pressure band pass through the corresponding limiting grooves and extend to the lower side of the adsorption plate. The tensioner is installed on the lower side of the adsorption plate and connected to the end of the pressure band to tighten or loosen the pressure band. This utility model proposes a testing device to improve the fixing effect of glass cover plates.

Description

Technical Field

[0001] This utility model relates to the field of glass cover plate testing technology, and in particular to a glass cover plate bending fatigue testing device. Background Technology

[0002] Foldable glass covers are widely used as screen protectors for foldable mobile phones. These covers require bending fatigue testing to ensure good durability and prevent cracking or noticeable creases after prolonged use. Existing testing equipment, as shown in patent application number CN202120257038.2, includes a fixed plate and a rotating plate. Both the fixed and rotating plates have multiple vacuum suction holes. The glass cover to be tested is attached to the fixed and rotating plates at both ends through these holes. The rotating plate then reciprocates, repeatedly bending the glass cover to perform the bending fatigue test.

[0003] The aforementioned testing equipment uses vacuum suction to fix the glass cover plate. While this changes the traditional adhesive method and makes assembling and disassembling the glass cover plate more convenient, suction is not as strong as adhesive. Furthermore, bending fatigue testing often requires tens of thousands of bends. During prolonged bending, relative slippage can easily occur between the glass cover plate and the rotating plate, or between the glass cover plate and the fixed plate, leading to a change in the bending position and affecting the final bending fatigue test results. Additionally, as... Figure 9 The adsorption force near the inner edge of the rotating plate 91 and the fixed plate 92 is often insufficient. In the later stage of the bending fatigue test, after the glass cover plate 93 develops a crease 94, when the rotating plate and the fixed plate are unfolded, the glass cover plate will lift up near the crease and separate from the rotating plate and the fixed plate, which will also affect the test results. Utility Model Content

[0004] To address the shortcomings of existing testing equipment that uses adsorption to fix glass covers with poor fixation, this invention proposes a testing device that improves the fixation effect of glass covers.

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

[0006] A glass cover plate bending fatigue testing device includes a housing, a motor, and two adsorption components arranged left and right. One adsorption component is fixedly connected to the housing, and the other adsorption component is rotatably connected to the housing. The device is driven by the motor to open and close the two adsorption components.

[0007] The adsorption assembly includes an adsorption plate and a pressing mechanism. The upper side of the adsorption plate is provided with vacuum suction holes. The pressing mechanism is located at the inner edge of the adsorption plate and includes a tensioner and a pressing belt. Limiting grooves are provided on the front and rear sides of the adsorption plate. The width of the limiting grooves is adapted to the width of the pressing belt. The pressing belt passes over the upper edge of the adsorption plate in the front-rear direction. Both ends of the pressing belt pass through the corresponding limiting grooves and extend to the lower side of the adsorption plate. The tensioner is installed on the lower side of the adsorption plate and connected to the end of the pressing belt to adjust the tension of the pressing belt.

[0008] With the above settings, when the testing equipment of this application fixes the glass cover plate, in addition to the vacuum suction hole adsorbing the glass cover plate, the tensioner tensions the pressure belt, and the pressure belt presses the glass cover plate tightly on the inner side of the adsorption plate. On the one hand, it increases the friction between the glass cover plate and the adsorption plate, preventing relative sliding between the glass cover plate and the adsorption plate. On the other hand, it also prevents the glass cover plate from lifting near the crease, thus improving the fixing effect of the glass cover plate.

[0009] Furthermore, the adsorption plate includes a support plate and an adsorption module. The adsorption module includes an inner plate and a vacuum suction hole located on the upper side of the inner plate. A flow channel is provided inside the inner plate. A connecting pipe is fixedly connected to the edge of the inner plate and communicates with the vacuum suction hole through the flow channel. The upper side of the support plate is provided with an installation groove that matches the inner plate. The edge of the support plate is provided with a first clearance groove. The inner plate is detachably connected to the installation groove. The upper side of the inner plate is flush with the upper side of the support plate. The connecting pipe extends to the outside of the support plate through the first clearance groove. Limiting grooves are provided on the front and rear sides of the support plate. The pressing mechanism is installed on the inner side of the support plate.

[0010] With the above settings, the adsorption module can be replaced to secure different glass covers.

[0011] Furthermore, the adsorption module also includes studs, which are fixedly connected to the front and rear sides of the inner plate. The front and rear sides of the support plate are provided with second clearance grooves, through which the studs extend to the outside of the support plate and are locked by nuts.

[0012] With the above setup, the adsorption module is locked to the support plate by a nut.

[0013] Furthermore, a strip groove is provided on the upper edge of the support plate, and the adsorption assembly also includes a rubber strip, which is disposed in the strip groove and on the lower side of the pressure belt, with the upper side of the rubber strip flush with the upper side of the support plate.

[0014] The above settings further enhance the fixing effect of the glass cover.

[0015] Furthermore, guide blocks are fixedly connected to the front and rear sides of the support plate. An arc surface is provided on the outer side of the guide block. The upper end of the arc surface extends to the upper surface of the support plate, and the lower end of the arc surface extends to the lower surface of the support plate. The pressure strip is connected to the tensioner through the arc surface.

[0016] Through the above settings, the wear at both ends of the pressure belt is reduced.

[0017] Furthermore, door-shaped limiters are provided on the front and rear sides of the support plate. The height of the limiter is h, and the thickness of the glass cover plate is t, where 1 < h / t < 1.5. Both ends of the limiter are fixedly connected to the support plate, and a limiting groove is formed between the limiter and the support plate.

[0018] Furthermore, the tensioner includes a screw rod, a first slider, and a second slider. The first slider and the second slider are slidably connected back and forth on the lower side of the support plate. The screw rod extends backward and is rotatably connected to the lower side of the support plate. The screw rod includes a first threaded portion threadedly connected to the first slider and a second threaded portion threadedly connected to the second slider. The thread directions of the first threaded portion and the second threaded portion are opposite. One end of the pressure belt is fixedly connected to the first slider, and the other end is fixedly connected to the second slider.

[0019] Through the above settings, by rotating the screw rod, the first slider and the second slider are driven to approach or move away from each other to tighten or loosen the pressure belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the test equipment for the embodiment.

[0021] Figure 2 For Figure 1 Enlarged view of part A.

[0022] Figure 3 Schematic diagram of the test equipment for the embodiment after installing the glass cover plate.

[0023] Figure 4 Schematic diagram of the adsorption module for the embodiment.

[0024] Figure 5 Schematic diagram of the adsorption component in the open state for the embodiment.

[0025] Figure 6 Schematic diagram of the adsorption component in the closed state for the embodiment.

[0026] Figure 7 For Figure 5 Sectional view taken along line B-B.

[0027] Figure 8 For Figure 7 Enlarged view of part C.

[0028] Figure 9 Schematic diagram of the existing test equipment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The technical solutions of the present invention will be further specifically described below through embodiments and in combination with the accompanying drawings.

[0030] like Figures 1 to 8 A glass cover plate bending fatigue testing device includes a housing 3, a motor, and two adsorption components arranged left and right. One adsorption component is fixedly connected to the housing 3, and the other adsorption component is rotatably connected to the housing 3 and driven by the motor to realize the opening and closing of the two adsorption components.

[0031] The adsorption assembly includes an adsorption plate 5 and a pressing mechanism. The adsorption plate 5 has a vacuum suction hole 6 on its upper side. The pressing mechanism is located at the inner edge of the adsorption plate 5. The pressing mechanism includes a tensioner 7 and a pressing belt 8. Limiting grooves 9 are provided on the front and rear sides of the adsorption plate 5. The width of the limiting grooves 9 is adapted to the width of the pressing belt 8. The pressing belt 8 passes over the upper edge of the adsorption plate 5 in the front-rear direction. Both ends of the pressing belt 8 pass through the corresponding limiting grooves 9 and extend to the lower side of the adsorption plate 5. The tensioner 7 is installed on the lower side of the adsorption plate 5 and connected to the end of the pressing belt 8 to tighten or loosen the pressing belt 8.

[0032] With the above settings, when the test equipment of this application fixes the glass cover plate, in addition to the vacuum suction hole 6 adsorbing the glass cover plate, the tensioner 7 tensions the pressure belt 8. The pressure belt 8 presses the glass cover plate tightly against the inner side of the adsorption plate 5. On the one hand, it increases the friction between the glass cover plate and the adsorption plate 5, preventing relative sliding between the glass cover plate and the adsorption plate 5. On the other hand, it also prevents the glass cover plate from lifting near the crease, thus improving the fixing effect of the glass cover plate.

[0033] Specifically, the motor is installed inside the housing 3. The motor can be a servo motor to improve rotational accuracy. The motor drives one of the adsorption components to rotate within the range of 0-180° to control the opening and closing of the adsorption components. Figure 1 The labels indicate the front, back, left, and right sides of the testing equipment. Initially, the two adsorption components open 180°, as shown below. Figure 3 The upper sides of the two adsorption components are flush. The adsorption components are connected to a vacuum pump. After the vacuum pump evacuates the air, the vacuum suction holes 6 on the upper side of the adsorption components generate suction. The left and right sides of the glass cover plate 200 are adsorbed onto the upper sides of the left and right adsorption components. The side of the adsorption component closer to the other adsorption component represents its inner side. The pressing mechanism is set at the inner edge of the adsorption component. The pressing band 8 can be made of metal, which has good tensile strength, or it can be made of rubber, which has good friction performance. The pressing band 8 extends along the front and back direction on the upper side of the adsorption component. The pressing band 8 is close to the inner edge of the adsorption component. Specifically, the side of the pressing band 8 closer to the other pressing band 8 is flush with the inner end face of the adsorption component. Figure 3 After the tensioner 7 tightens the pressure belt 8, the pressure belt 8 presses the glass cover plate firmly against the inner edge of the adsorption assembly to improve the fixing effect of the glass cover plate. The motor drives the corresponding adsorption assembly to rotate upward 180° to the upper side of another adsorption assembly, and the two adsorption assemblies are parallel to each other. Figure 6At this point, the glass cover plate is bent 180°, and the motor drives the corresponding adsorption component to rotate 180° in the opposite direction. The adsorption component then drives the glass cover plate to open. This process is repeated to bend the glass cover plate multiple times. During this process, there is no relative slippage between the glass cover plate and the adsorption component. Moreover, because the pressure belt 8 presses the glass cover plate tightly, after the glass cover plate forms a crease between the two adsorption components, the glass cover plate can still stick well to the adsorption component during the bending process and will not detach from the adsorption component. After the number of bends of the glass cover plate reaches the requirement, the motor stops, the tensioner 7 releases the pressure belt 8, and the vacuum pump stops sucking air. The glass cover plate can then be easily removed from the adsorption component for further inspection to determine whether the bending performance of the glass cover plate meets the standard.

[0034] As one implementation, the adsorption plate 5 includes a support plate 51 and an adsorption module 52. The adsorption module 52 includes an inner plate 521 and a vacuum suction hole 6 disposed on the upper side of the inner plate 521. A flow channel (not shown in the figure) is provided inside the inner plate 521. A connecting pipe 522 is fixedly connected to the edge of the inner plate 521 and communicates with the vacuum suction hole 6 through the flow channel. The upper side of the support plate 51 is provided with an installation groove 10 adapted to the inner plate 521. The edge of the support plate 51 is provided with a first clearance groove 11. The inner plate 521 is detachably connected to the installation groove 10. The upper side of the inner plate 521 is flush with the upper side of the support plate 51. The connecting pipe 522 extends to the outside of the support plate 51 through the first clearance groove 11. A limiting groove 9 is provided on the front and rear sides of the support plate 51. A pressing mechanism is installed inside the support plate 51.

[0035] With the above settings, the adsorption module 52 can be replaced to fix different glass covers.

[0036] The support plate 51 of this application is used to install the adsorption module 52. Different adsorption modules 52 have different numbers of vacuum suction holes 6. Adsorption modules 52 with more vacuum suction holes 6 are suitable for glass covers with larger adsorption areas, while adsorption modules 52 with fewer vacuum suction holes 6 are suitable for glass covers with smaller adsorption areas. The appropriate adsorption module 52 can be selected according to the area of ​​the glass cover to be adsorbed. The support plate 51 of one adsorption component of this application is fixedly connected to the housing, and the support plate 51 of the other adsorption component is connected to the motor. The vacuum pump is connected to the connecting pipe 522 through a hose. After the vacuum pump is running, the vacuum suction holes 6 produce an adsorption effect.

[0037] As one implementation, the adsorption module 52 also includes a stud 523, which is fixedly connected to the front and rear sides of the inner plate 521. The support plate 51 has a second clearance groove 12 on the front and rear sides. The stud 523 extends out of the support plate 51 through the second clearance groove 12 and is locked by a nut 13.

[0038] With the above setup, the adsorption module 52 is locked onto the support plate 51 by the nut 13.

[0039] Specifically, the embedded plate 521 is of a rectangular structure, and a stud 523 is installed at each of the four corners of the embedded plate 521. The openings of the second avoidance groove 12 and the first avoidance groove 11 face upward, facilitating the downward insertion of the adsorption module 52 into the support plate 51. After the nut 13 is tightened, the nut 13 presses against the outside of the support plate 51 to lock the adsorption module 52.

[0040] As an implementation manner, a strip groove 14 is provided on the upper side of the edge of the support plate 51. The adsorption assembly further includes a rubber strip 15. The rubber strip 15 is arranged in the strip groove 14. The rubber strip 15 is arranged on the lower side of the pressing belt 8, and the upper side of the rubber strip 15 is flush with the upper side of the support plate 51.

[0041] Through the above settings, the fixing effect of the glass cover plate is further improved.

[0042] The pressing belt 8 of the present application presses the glass cover plate against the upper side of the rubber strip 15. The friction between the rubber strip 15 and the glass cover plate is large to prevent the glass cover plate from sliding on the adsorption assembly during the bending process.

[0043] As an implementation manner, guiding blocks 53 are fixedly connected to the front and rear sides of the support plate 51. An arc surface is provided on the outside of the guiding blocks 53. The upper end of the arc surface extends to the upper surface of the support plate 51, and the lower end of the arc surface extends to the lower surface of the support plate 51. The pressing belt 8 passes through the arc surface and is connected to the tensioner 7.

[0044] Through the above settings, the wear at both ends of the pressing belt 8 is reduced.

[0045] As an implementation manner, a U-shaped limiting member 54 is provided on the front and rear sides of the support plate 51. The height of the limiting member 54 is h, and the thickness of the glass cover plate is t, where 1 < h / t < 1.5. Both ends of the limiting member 54 are fixedly connected to the support plate 51, and the above-mentioned limiting groove 9 is formed between the limiting member 54 and the support plate 51.

[0046] Specifically, the limiting groove 9 of the present application is formed by the limiting member 54 and the support plate 51. The thickness of the existing glass cover plate is generally about 1 mm, and the thickness of the limiting member 54 is controlled below 1.5 mm to prevent interference between the limiting members 54 after the adsorption assembly is closed. Additionally, the limiting member 54 can also be fixedly installed on the lower side of the support plate 51 to further prevent interference between the limiting members 54.

[0047] As one implementation, the tensioner 7 includes a screw 71, a first slider 72, and a second slider 73. The first slider 72 and the second slider 73 are slidably connected to the lower side of the support plate 51. The screw 71 extends rearward and is rotatably connected to the lower side of the support plate 51. The screw 71 includes a first threaded portion 711 that is threadedly connected to the first slider 72 and a second threaded portion 712 that is threadedly connected to the second slider 73. The thread directions of the first threaded portion 711 and the second threaded portion 712 are opposite. One end of the pressure band 8 is fixedly connected to the first slider 72, and the other end is fixedly connected to the second slider 73.

[0048] With the above settings, rotating the screw 71 causes the first slider 72 and the second slider 73 to move closer or further apart from each other, thereby tightening or loosening the pressure belt 8.

[0049] When the screw 71 of this application is manually rotated, the first threaded part 711 and the second threaded part 712 rotate synchronously. When the thread directions of the first threaded part 711 and the second threaded part 712 are opposite, the movement directions of the first slider 72 and the second slider 73 are opposite. The first slider 72 and the second slider 73 move closer to each other or further away. When the first slider 72 and the second slider 73 move closer, the pressure band 8 presses the glass cover plate. When the first slider 72 and the second slider 73 move further away, the pressure band 8 releases the glass cover plate.

[0050] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A glass cover plate bending fatigue testing device, characterized in that, It includes a housing, a motor, and two adsorption components arranged left and right. One adsorption component is fixedly connected to the housing, and the other adsorption component is rotatably connected to the housing and driven by the motor to realize the opening and closing of the two adsorption components. The adsorption component includes an adsorption plate and a pressing edge mechanism. Vacuum suction holes are provided on the upper side of the adsorption plate. The pressing edge mechanism is arranged at the inner edge of the adsorption plate. The pressing edge mechanism includes a tensioner and a pressing belt. Limiting grooves are provided on the front and rear sides of the adsorption plate. The width of the limiting grooves is adapted to the width of the pressing belt. The pressing belt passes along the front-rear direction above the edge of the adsorption plate. Both ends of the pressing belt pass through the corresponding limiting grooves and extend to the lower side of the adsorption plate. The tensioner is installed on the lower side of the adsorption plate and connected to the end of the pressing belt to tighten and loosen the pressing belt.

2. The glass cover plate bending fatigue testing device according to claim 1, characterized in that, The adsorption plate includes a support plate and an adsorption module. The adsorption module includes an embedded plate and a connecting pipe. The vacuum suction holes are provided on the upper side of the embedded plate. A flow channel is provided in the embedded plate. The connecting pipe is fixedly connected to the edge of the embedded plate and is connected to the vacuum suction holes through the flow channel. An installation groove adapted to the embedded plate is provided on the upper side of the support plate. A first avoidance groove is provided at the edge of the support plate. The embedded plate is detachably connected to the installation groove. The upper side of the embedded plate is flush with the upper side of the support plate. The connecting pipe passes through the first avoidance groove and extends outside the support plate. The limiting grooves are provided on the front and rear sides of the support plate. The pressing edge mechanism is installed on the inner side of the support plate.

3. The glass cover plate bending fatigue testing device according to claim 2, characterized in that, The adsorption module further includes stud bolts. The stud bolts are fixedly connected to the front and rear sides of the embedded plate. Second avoidance grooves are provided on the front and rear sides of the support plate. The stud bolts pass through the second avoidance grooves and extend outside the support plate and are locked by nuts.

4. The glass cover plate bending fatigue testing device according to claim 2, characterized in that, A strip-shaped groove is provided on the upper side of the edge of the support plate. The adsorption component further includes a rubber strip. The rubber strip is arranged in the strip-shaped groove. The rubber strip is arranged under the pressing belt. The upper side of the rubber strip is flush with the upper side of the support plate.

5. The glass cover plate bending fatigue testing device according to claim 2, characterized in that, Guide blocks are fixedly connected to the front and rear sides of the support plate. An arc surface is provided on the outer side of the guide block. The upper end of the arc surface extends to the upper surface of the support plate, and the lower end of the arc surface extends to the lower surface of the support plate. The pressing belt passes through the arc surface and is connected to the tensioner.

6. The glass cover plate bending fatigue testing device according to claim 2, characterized in that, A door-shaped limiting member is provided on the front and rear sides of the support plate. The height of the limiting member is h, and the thickness of the glass cover plate is t, where 1 < h / t < 1.

5. Both ends of the limiting member are fixedly connected to the support plate. A limiting groove as described above is formed between the limiting member and the support plate.

7. The glass cover plate bending fatigue testing device according to claim 2, characterized in that, The tensioner includes a screw rod, a first slider, and a second slider. The first slider and the second slider slide back and forth on the lower side of the support plate. The screw rod extends backward and is rotatably connected to the lower side of the support plate. The screw rod includes a first threaded portion threadedly connected to the first slider and a second threaded portion threadedly connected to the second slider. The thread directions of the first threaded portion and the second threaded portion are opposite. One end of the pressing belt is fixedly connected to the first slider, and the other end is fixedly connected to the second slider.

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