Touch screen compression resistance detection device and detection method

Abstract

The invention belongs to the technical field of touch screen detection, particularly relates to a pressure resistance detection device and method for a touch screen, and aims to solve the problem that pressure resistance detection in the prior art does not have pressure resistance detection in a simulated high-temperature environment from inside to outside, the pressure resistance detection device for the touch screen comprises a bearing base, and a bearing convex block is reserved on the upper surface of the bearing base; side sliding grooves are formed in the two sides of the bearing protruding block respectively, the same drawer supporting plate is slidably connected between the two side sliding grooves, and a rectangular hole is formed in the middle of the upper surface of the drawer supporting plate. When the device is used, heat generated by the screen from inside to outside can be simulated, and the compression resistance of the screen at high temperature can be simulated by matching with continuous pressure output of the static pressure mechanism; and through the arrangement of the pull rope, the transmission of the pressure can be more lasting and uninterrupted, so that the real pressure-resistant lasting time of the screen can be detected.

Description

Technical Field

[0001] The present invention relates to the technical field of touch screen detection, and particularly to a touch screen compressive resistance detection device and a detection method. Background Art

[0002] A touch screen is an inductive liquid crystal display device that can receive input signals such as touches. When a graphic button on the screen is touched, the tactile feedback system on the screen can drive various connecting devices according to a pre-programmed program, which can be used to replace a mechanical button panel and create vivid audio and video effects through the liquid crystal display screen.

[0003] Currently, the touch screen is most widely used in the mobile phone field. As is well known, mobile phones need to undergo compressive resistance testing of the screen before leaving the factory to cope with the sudden pressure from the screen during normal use, so as to ensure the normal use of the screen and the mobile phone, and even ensure the safety of the user; the traditional compressive resistance testing method only combines static pressure testing with changing the pressure magnitude and time, and then checks whether the mobile phone can be used normally. This detection method can only adapt to the compressive resistance performance of the screen at normal temperature, while in actual operation, the screen may continuously generate pressure in a high-temperature state. For example, if the mobile phone forgets to lock the screen or the screen locking fails and the screen remains on all the time, and it happens to be put into a bag, if it is placed for a long time at this time, the screen will be in a closed state and generate high temperature. At this time, whether the screen has high-temperature and high-pressure resistance performance becomes particularly important. Summary of the Invention

[0004] Aiming at the technical problem that the existing compressive resistance detection does not have the ability to simulate the compressive resistance detection in a high-temperature environment from the inside out, the present invention adopts the following technical solutions: A touch screen compressive resistance detection device includes a bearing base. A bearing bump is reserved on the upper surface of the bearing base, and side chutes are respectively opened on both sides of the bearing bump. The same drawer support plate is slidably connected between the two side chutes. A rectangular hole is opened in the middle of the upper surface of the drawer support plate. A heat preservation box is fixed on the upper surface of the bearing base, and a drawer panel and a back panel for closing the heat preservation box are respectively fixed on the front and back sides of the heat preservation box. The end of the drawer support plate is fixed on the surface of the drawer panel; a guiding outer tube extending vertically downward is embedded at the top of the heat preservation box, and a static pressure mechanism is slidably connected inside the guiding outer tube. The static pressure mechanism includes a static pressure column slidably connected in the guiding outer tube, and a pull rope is fixed near the middle of the circumferential outer wall of the static pressure column; a hot air blower is fixed on the upper surface of the bearing base near the rear side, and an air duct extending to the side of the bearing bump is fixed at the air outlet of the hot air blower. Two rectangular grooves parallel to the extending direction of the side chutes are opened on the upper surface of the bearing bump, and a "feng" - shaped ventilation hole is opened in the middle of the bearing bump. The outlet of the ventilation hole is located in the two rectangular grooves.

[0005] Preferably, the upper surface of the drawer support plate is provided with two stepped through holes at both ends of the rectangular hole, and two U-shaped pocket rods parallel to each other are slidably inserted in the two stepped through holes.

[0006] Preferably, a supporting area is provided between the two rectangular grooves, and a guiding chamfered surface is provided at a top corner of a side of the supporting area close to the drawer panel.

[0007] Preferably, side observation windows are provided on both the left and right sides of the incubator, and a temperature display and a temperature regulating device are provided on one side of the incubator, close to and obliquely above the side observation window.

[0008] Preferably, two mutually symmetrical arch frames are fixed on the upper surface of the bearing base near the middle of the rear side, and the top ends of the two arch frames are fixed to the outer wall of the guide outer tube at the same time near one end of the guide outer tube; the upper surface of the thermal insulation box is located between the two arch frames, and a fixed pulley frame 1 and a pulley frame 2 are respectively fixed thereon, and the pulley frame 2 is located near the side of the guide outer tube, and the fixed pulley frame 1 is located at the end of the thermal insulation box; and a rope passing slot is opened at the bottom end of the guide outer tube near the bottom of the pulley frame 2, and the outer wall of the guide outer tube is located on both sides of the rope passing slot and the same pulley frame 3 is fixed thereon, and the bottom end of the pulley frame 3, the pulley frame 2 and the fixed pulley frame A fixed pulley is fixed in the wheel frame one; a fixed plug rod is fixed at one end of the pull rope close to the static pressure column, and the plugging position of the fixed plug rod is located near the middle position of the outer wall of the static pressure column, and the pull rope first passes around the fixed pulley in the pulley frame three, then passes around the fixed pulley in the pulley frame two, and finally passes around the fixed pulley in the fixed pulley frame one, after which a falling dynamometer is fixed, and a counterweight tray is fixed at the bottom tension end of the dynamometer; a roller notch is opened near the top of the circumferential outer wall of the static pressure column, and a guide wheel is arranged in the roller notch, and the outer wall of the guide wheel is rollingly connected to the inner wall of the guide outer tube; the guide wheel is located on the side away from the pulley frame three.

[0009] Preferably, sliders are fixed on both opposite sides of the counterweight tray, and grooved columns with openings facing each other and parallel to each other are fixed on opposite sides of the two bow-shaped frames, and the sliders are slidably connected in the corresponding grooved columns; a second counterweight block is placed on the counterweight tray.

[0010] Preferably, vertical anti-torsion ribs are fixed to the circumferential inner wall of the guide outer tube, and grooves matching the anti-torsion ribs are reserved on the outer wall of the static pressure column.

[0011] Preferably, a through sliding hole is reserved in the middle of the top of the static pressure column, and an impact module is provided in the through sliding hole, the impact module includes a bearing clamping plate clamped at the top orifice of the through sliding hole, and a sliding bearing is clamped in the middle of the bearing clamping plate, a rack top rod extending vertically downward is slidably connected in the sliding bearing, and a hammer pressure block is fixed to the bottom end of the rack top rod; a weighting mechanism is provided on the upper surface of the hammer pressure block, and a spring retaining ring is fixed on the circumferential outer wall of the rack top rod near the bottom of the bearing clamping plate, and a reset energy storage spring is fixed between the upper surface of the spring retaining ring and the lower surface of the sliding bearing; a reduction motor is embedded in the top of the guide outer tube, and a driving wheel is fixed to the top of the output shaft of the reduction motor; an arc-shaped notch is opened on the circumferential outer wall of the driving wheel, and an arc-shaped rack is clamped in the arc-shaped notch, and the arc-shaped rack can mesh with the rack top rod when the driving wheel rotates.

[0012] Preferably, a roller support frame extending to the middle is fixed to the top end of the guide outer tube, and a support wheel is provided at one end of the roller support frame close to the rack top rod, which can ensure that the rack top rod can always engage with the arc-shaped rack when needed; the weighting mechanism includes a positioning piece fixed to the upper surface of the hammer pressure block, and a counterweight block is clamped on the outer wall of the positioning piece and the rack top rod.

[0013] A method for detecting the pressure resistance of a touch screen comprises the following steps: Step 1: Pull out the drawer panel and the drawer support plate, and place the mobile phone body to be tested in the rectangular hole, and then replace the appropriate counterweight block 1 according to the impact requirements; when replacing the counterweight block 1, just apply downward pressing force to the top of the rack top rod until the hammer pressure block at its bottom is pressed down to the plane protruding from the bottom end of the static pressure column; then continue to press downward to clamp the new counterweight block 1 above the hammer pressure block; Then push the drawer tray into the detection position; Step 2: Turn on the hot air blower according to the test environment until the temperature in the incubator reaches the set test temperature; then add weight to the counterweight tray and observe the reading of the force gauge. The pressure applied to the touch screen is the weight of the static pressure column plus the reading on the force gauge. During the test, the physical changes of the internal touch screen can be observed from the side observation window, such as whether the screen is broken and whether the pre-played music can be played normally. Step 3: For further impact test, start the reduction motor again. Under the action of the arc-shaped rack and the rack top rod, the rack top rod and the hammer block and weighting mechanism at its bottom are slowly lifted to a certain height, and then quickly dropped under the action of the reset energy storage spring, and then hit the touch screen below, forming an impact test.

[0014] The beneficial effects of the present invention are: 1. By setting up the ventilation hole outlet in the rectangular groove, the heat generated by the screen from the inside to the outside can be simulated during use. Combined with the continuous pressure output of the static pressure mechanism, the pressure resistance of the screen under high temperature can be simulated. By setting the pull rope, the pressure transmission can be more persistent and uninterrupted, so as to detect the actual pressure resistance time of the screen.

[0015] 2. Through the impact module, the rack top rod and the hammer block and weighting mechanism at its bottom can be slowly lifted to a certain height, and then quickly dropped under the action of the reset energy storage spring, and then hit the touch screen below to form an impact test; according to the test needs, the length of the arc-shaped rack can be replaced, and then the reset energy storage spring can be contracted to different lengths, and then different impact energies can be generated when released.

[0016] 3. By setting the guiding bevel surface, when the drawer tray carrying the mobile phone body is pushed in, the lower surface of the end of the mobile phone body can slide along the guiding bevel surface to the upper surface of the supporting area, thereby ensuring that the static pressure column is fully pressed on the protruding upper surface touch screen of the mobile phone body during the subsequent pressure test. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the exploded structure of the drawer support plate in the present invention; Figure 3 It is a schematic diagram of the structure of the present invention before detection; Figure 4 It is a schematic diagram of the rear three-dimensional structure of the present invention; Figure 5 A top view of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of the cross-sectional structure along line AA; Figure 7 is a side view of the present invention; Figure 8 For the present invention Figure 7 The schematic diagram of the cross-sectional structure along the BB line; Fig. 9 It is a schematic structural diagram of the present invention when replacing the counterweight block in the impact module.

[0018] In the figure: 1, bearing base; 101, bearing convex block; 102, rectangular groove; 103, guiding chamfer; 104, ventilation hole; 105, side slide groove; 2, insulation box; 201, side observation window; 3, bow frame; 4, fixed pulley frame 1; 5, fixed pulley; 6, pull rope; 7, reduction motor; 8, driving wheel; 9, rack top rod; 10, roller support frame; 11, guiding outer tube; 12, drawer support plate; 1201, rectangular hole; 1202, step Ladder perforation; 1203, U-shaped pocket rod; 13, drawer panel; 14, mobile phone body; 15, temperature display; 16, static pressure column; 17, pulley frame two; 18, dynamometer; 19, back plate; 20, hot air blower; 21, groove column; 22, guide wheel; 23, bearing clamp; 24, counterweight tray; 25, air duct; 26, hammer pressure block; 27, pulley frame three; 28, spring retaining ring; 29, counterweight block two; 30, counterweight block one. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Reference Figure 1-9, A touch screen compression resistance detection device, including a bearing base 1. In the middle of the upper surface of the bearing base 1 near the front, a cuboid-shaped bearing convex block 101 is reserved. On both sides of the bearing convex block 101, side sliding grooves 105 are respectively opened. A same drawer support plate 12 is slidably connected between the two side sliding grooves 105. In the middle of the upper surface of the drawer support plate 12, a rectangular hole 1201 for placing the mobile phone to be tested is opened. On the upper surface of the bearing base 1, a heat preservation box 2 with an overall rectangular frame structure is fixed. On the front and back sides of the heat preservation box 2, a drawer panel 13 and a back panel 19 for closing the heat preservation box 2 are respectively fixed. The end of the drawer support plate 12 is fixed on the surface of the drawer panel 13; at the top of the heat preservation box 2, a guiding outer tube 11 extending vertically downward is embedded, and a static pressure mechanism is slidably connected inside the guiding outer tube 11. The static pressure mechanism includes a static pressure column 16 slidably connected in the guiding outer tube 11. Near the middle of the circumferential outer wall of the static pressure column 16, a pull rope 6 is fixed; near the rear side of the upper surface of the bearing base 1, a hot air blower 20 is fixed, and at the air outlet of the hot air blower 20, an air duct 25 extending to the side of the bearing convex block 101 is fixed. On the upper surface of the bearing convex block 101, two rectangular grooves 102 parallel to the extending direction of the side sliding grooves 105 are opened, and in the middle of the bearing convex block 101, a ventilation hole 104 with a "feng" character structure is opened. The outlet of the ventilation hole 104 is located in the two rectangular grooves 102; through the outlet of the ventilation hole 104 arranged in the rectangular groove 102, the heat generated from the inside to the outside of the screen can be imitated during use. Cooperating with the continuous pressure output of the static pressure mechanism, the compression resistance performance of the screen at high temperature can be simulated; through the setting of the pull rope 6, the transmission of the pressure can be made more persistent and uninterrupted to detect the true pressure resistance duration of the screen.

[0021] On both ends of the upper surface of the drawer support plate 12 located at the rectangular hole 1201, two stepped through holes 1202 are opened, and two parallel U-shaped兜杆1203 are slidably inserted in the two stepped through holes 1202; through the setting of the two U-shaped兜杆1203, the mobile phone body 14 to be detected can be stopped in the rectangular hole 1201 before and after the detection, ensuring that as the drawer support plate 12 is pushed until the drawer panel 13 is closed, at this time, the screen of the mobile phone body 14 just falls directly below the static pressure column 16.

[0022] Refer to Figure 2-Figure 3 , between the two rectangular grooves 102 is a supporting area, and at the top edge of the side of the supporting area close to the drawer panel 13, a guiding inclined plane 103 is opened; when the drawer support plate 12 carrying the mobile phone body 14 is pushed in, the lower surface of the end of the mobile phone body 14 can slide up along the guiding inclined plane 103 to the upper surface of the supporting area, so as to ensure that during the later pressure test, the static pressure column 16 is fully pressed on the upper surface touch screen of the protruding mobile phone body 14.

[0023] Among them, side observation windows 201 are opened on both sides of the insulation box 2, and a temperature display 15 and a temperature control device are arranged on one side of the insulation box 2, close to the side observation window 201 and obliquely above it; during the static pressure test, it can be clearly observed from the outside whether there is obvious cracking on the surface of the touch screen.

[0024] Reference Figure 3 , Figure 4 and Figure 6 Two mutually symmetrical bow frames 3 are fixed on the upper surface of the bearing base 1 near the middle of the rear side, and the top ends of the two bow frames 3 are fixed to the outer wall of the guide outer tube 11 at the same time near one end of the guide outer tube 11; the upper surface of the heat preservation box 2 is located between the two bow frames 3, and a fixed pulley frame 1 4 and a pulley frame 2 17 are fixed respectively, and the pulley frame 2 17 is located on the side close to the guide outer tube 11, and the fixed pulley frame 1 4 is located at the end of the heat preservation box 2; and the bottom end of the guide outer tube 11 is opened near the bottom of the pulley frame 2 17, and the outer wall of the guide outer tube 11 is fixed with the same pulley frame 3 27 on both sides of the rope groove, and the bottom end of the pulley frame 3 27, the pulley frame 2 17 and the fixed pulley frame 1 4 are all fixed with fixed pulleys 5; a fixed plug rod is fixed to one end of the pull rope 6 close to the static pressure column 16, and The insertion position of the fixed plug rod is located near the middle position of the outer wall of the static pressure column 16, and the pull rope 6 first passes around the fixed pulley 5 in the pulley frame three 27, then passes around the fixed pulley 5 in the pulley frame two 17, and finally passes around the fixed pulley 5 in the fixed pulley frame one 4, and then a falling dynamometer 18 is fixed, and a counterweight tray 24 is fixed to the bottom tension end of the dynamometer 18; a roller gap is opened near the top of the circumferential outer wall of the static pressure column 16, and a guide wheel 22 is arranged in the roller gap, and the outer wall of the guide wheel 22 is rollingly connected to the inner wall of the guide outer tube 11; the guide wheel 22 is located on the side away from the pulley frame three 27; when in use, the friction resistance between the static pressure column 16 and the inner wall of the guide outer tube 11 can be reduced, and then the pressure pressed on the touch screen is equal to the gravity of the static pressure column 16 and the tension at the other end of the pull rope 6.

[0025] Reference Figure 6 and Fig. 9 Slide blocks are fixed on both sides of the counterweight tray 24, and grooved columns 21 with openings facing each other and parallel to each other are fixed on the opposite sides of the two bow frames 3, and the slide blocks are slidably connected in the corresponding grooved columns 21; a counterweight block 29 is placed on the counterweight tray 24; by placing counterweight blocks 29 of different weights, the pressure on the touch screen during detection can be changed, that is, the pressure test is performed using the controlled variable method.

[0026] Reference Figure 6The circumferential inner wall of the guide outer tube 11 is fixed with vertical anti-torsion ribs, and the outer wall of the static pressure column 16 is reserved with grooves adapted to the anti-torsion ribs; during frequent downward pressure tests, it can be ensured that the static pressure column 16 will not twist, thereby causing the pull rope 6 to be entangled.

[0027] Reference Figure 3 , Figure 5 , Figure 6 A through-slide hole is reserved in the middle of the top of the static pressure column 16, and an impact module is arranged in the through-slide hole, the impact module includes a bearing clamping plate 23 clamped at the top orifice of the through-slide hole, and a sliding bearing is clamped in the middle of the bearing clamping plate 23, a rack push rod 9 extending vertically downward is slidably connected in the sliding bearing, and a hammer pressure block 26 is fixed to the bottom end of the rack push rod 9; a weighting mechanism is arranged on the upper surface of the hammer pressure block 26, and a spring retaining ring 28 is fixed to the circumferential outer wall of the rack push rod 9 near the bottom of the bearing clamping plate 23, and a reset energy storage spring is fixed between the upper surface of the spring retaining ring 28 and the lower surface of the sliding bearing; the top of the guide outer tube 11 is embedded with A reduction motor 7, and a driving wheel 8 is fixed to the top of the output shaft of the reduction motor 7; an arc-shaped notch is opened on the circumferential outer wall of the driving wheel 8, and an arc-shaped rack is clamped in the arc-shaped notch. The arc-shaped rack can engage with the rack top rod 9 when the driving wheel 8 rotates, and then drive the rack top rod 9 and the hammer pressure block 26 and the weighting mechanism at its bottom to slowly rise to a certain height, and then quickly descend under the action of the reset energy storage spring, and then hit the touch screen below to form an impact test; the length of the arc-shaped rack can be replaced according to the test needs, and then the reset energy storage spring can be contracted to different lengths, and then different impact energies can be generated when released.

[0028] Reference Figure 3 A roller support frame 10 extending to the middle is fixed to the top of the guide outer tube 11, and a support wheel is provided at one end of the roller support frame 10 close to the rack top rod 9, which can ensure that the rack top rod 9 can always engage with the arc rack when needed; the weighting mechanism includes a positioning piece fixed on the upper surface of the hammer pressure block 26, and the positioning piece and the outer wall of the rack top rod 9 are clamped with a counterweight block 30. By setting the counterweight block 30 and the positioning piece, the mass of the impact end can be changed, and then the kinetic energy during the impact can be changed.

[0029] A method for detecting the pressure resistance of a touch screen comprises the following steps: Step 1: Pull out the drawer panel 13 and the drawer support plate 12, and place the mobile phone body 14 to be tested in the rectangular hole 1201, and then replace the appropriate counterweight block 30 according to the impact requirements; when replacing the counterweight block 30, just apply downward pressing force to the top of the rack top rod 9 until the hammer pressure block 26 at its bottom is pressed down to the plane of the bottom end of the protruding static pressure column 16; then continue to press downward to clamp the new counterweight block 30 above the hammer pressure block 26; Then push the drawer support plate 12 into the detection position; Step 2: Turn on the hot air blower 20 according to the detection environment requirements until the temperature in the incubator 2 reaches the set detection temperature; at this time, add weight to the counterweight tray 24 and observe the reading of the force gauge 18. At this time, the pressure applied to the touch screen is the weight of the static pressure column 16 plus the reading on the force gauge 18. During the detection, the physical changes of the internal touch screen can be observed from the side observation window 201, such as whether the screen is broken and whether the pre-played music can be played normally. Step 3: Further impact test, at this time, the reduction motor 7 is started again, and under the action of the arc-shaped rack and the rack top rod 9, the rack top rod 9 and the hammer pressure block 26 and the weighting mechanism at its bottom are slowly lifted to a certain height, and then quickly dropped under the action of the reset energy storage spring, and then hit the touch screen below, forming an impact test; according to the test needs, the length of the arc-shaped rack can be replaced, and then the reset energy storage spring can be contracted to different lengths, and then different impact energies can be generated when released.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A touch screen pressure resistance detection device, comprising a bearing base (1), wherein a bearing protrusion (101) is reserved on the upper surface of the bearing base (1), and side slide grooves (105) are respectively opened on both sides of the bearing protrusion (101), and a same drawer support plate (12) is slidably connected between the two side slide grooves (105), and a rectangular hole (1201) is opened in the middle of the upper surface of the drawer support plate (12), characterized in that: The upper surface of the bearing base (1) is fixedly provided with a heat preservation box (2), and drawer panels (13) and rear back panels (19) for closing the heat preservation box (2) are respectively fixedly provided on the front and rear sides of the heat preservation box (2). The end of the drawer support plate (12) is fixedly arranged on the surface of the drawer panel (13); a guiding outer tube (11) extending vertically downward is embedded at the top end of the heat preservation box (2), and a static pressure mechanism is slidably connected inside the guiding outer tube (11). The static pressure mechanism comprises a static pressure column (16) slidably connected in the guiding outer tube (11), and a pull rope (6) is fixedly arranged on the circumferential outer wall of the static pressure column (16) near the middle; a hot air blower (20) is fixedly arranged on the upper surface of the bearing base (1) near the rear side, and an air duct (25) extending to the side of the bearing bump (101) is fixedly arranged at the air outlet of the hot air blower (20). Two rectangular grooves (102) parallel to the extending direction of the side sliding groove (105) are formed in the upper surface of the bearing bump (101), and a ventilation hole (104) with a "Feng" character structure is formed in the middle of the bearing bump (101). The outlet of the ventilation hole (104) is located in the two rectangular grooves (102).

2. A touch screen pressure resistance detection device according to claim 1, characterized in that: Two stepped through holes (1202) are respectively formed at both ends of the rectangular hole (1201) on the upper surface of the drawer support plate (12), and two parallel U-shaped兜杆 (1203) are slidably inserted into the two stepped through holes (1202).

3. A touch screen pressure resistance detection device according to claim 2, characterized in that: A bearing area is formed between the two rectangular grooves (102), and a guiding bevel surface (103) is formed at the top edge of the bearing area near the drawer panel (13).

4. A touch screen pressure resistance detection device according to claim 1, characterized in that: Side observation windows (201) are respectively formed on the left and right sides of the heat preservation box (2), and a temperature display (15) and a temperature regulating device are arranged obliquely above one side of the heat preservation box (2) near the side observation window (201).

5. A touch screen pressure resistance detection device according to claim 1, characterized in that: Two mutually symmetrical arch frames (3) are fixed on the upper surface of the bearing base (1) near the middle of the rear side, and the top ends of the two arch frames (3) are fixed to the outer wall of the guide outer tube (11) at the same time near one end of the guide outer tube (11); a fixed pulley frame 1 (4) and a pulley frame 2 (17) are respectively fixed on the upper surface of the heat preservation box (2) between the two arch frames (3), and the pulley frame 2 (17) is located near the side of the guide outer tube (11), and the fixed pulley frame 1 (4) is located at the end of the heat preservation box (2); and a rope passing groove is opened at the bottom end of the guide outer tube (11) near the bottom of the pulley frame 2 (17), and the outer wall of the guide outer tube (11) is fixed with the same pulley frame 3 (27) on both sides of the rope passing groove, and the bottom end of the pulley frame 3 (27), the pulley frame 2 (17) and the fixed pulley frame 1 (4) A fixed pulley (5) is fixed in the middle; a fixed plug rod is fixed at one end of the pull rope (6) close to the static pressure column (16), and the plugging position of the fixed plug rod is located near the middle position of the outer wall of the static pressure column (16); the pull rope (6) first passes around the fixed pulley (5) in the pulley frame three (27), then passes around the fixed pulley (5) in the pulley frame two (17), and finally passes around the fixed pulley (5) in the fixed pulley frame one (4), and then a falling force gauge (18) is fixed, and a counterweight tray (24) is fixed to the bottom tension end of the force gauge (18); a roller notch is opened near the top of the circumferential outer wall of the static pressure column (16), and a guide wheel (22) is arranged in the roller notch, and the outer wall of the guide wheel (22) is rollingly connected to the inner wall of the guide outer tube (11); the guide wheel (22) is located on the side away from the pulley frame three (27).

6. A touch screen pressure resistance detection device according to claim 5, characterized in that: Slide blocks are fixed on both opposite sides of the counterweight tray (24), and grooved columns (21) with openings facing each other and parallel to each other are fixed on opposite sides of the two arch frames (3), and the slide blocks are slidably connected in the corresponding grooved columns (21); a second counterweight block (29) is placed on the counterweight tray (24).

7. A touch screen pressure resistance detection device according to claim 1, characterized in that: A vertical anti-torsion rib is fixed to the circumferential inner wall of the guide outer tube (11), and a groove matching the anti-torsion rib is reserved on the outer wall of the static pressure column (16).

8. A touch screen pressure resistance detection device according to claim 1, characterized in that: A through sliding hole is reserved in the middle of the top of the static pressure column (16), and an impact module is arranged in the through sliding hole. The impact module includes a bearing clamp (23) clamped at the top hole of the through sliding hole, and a sliding bearing is clamped in the middle of the bearing clamp (23). A rack top rod (9) extending vertically downward is slidably connected in the sliding bearing, and a hammer pressure block (26) is fixed at the bottom end of the rack top rod (9); a weighting mechanism is arranged on the upper surface of the hammer pressure block (26), and the circumferential outer wall of the rack top rod (9) is close to the hammer pressure block (26). A spring retaining ring (28) is fixed below the bearing-proximal clamping plate (23), and a return energy storage spring is fixed between the upper surface of the spring retaining ring (28) and the lower surface of the sliding bearing; a reduction motor (7) is embedded at the top end of the guide outer tube (11), and a driving wheel (8) is fixed at the top end of the output shaft of the reduction motor (7); an arc-shaped notch is formed on the circumferential outer wall of the driving wheel (8), and an arc-shaped rack is clamped in the arc-shaped notch, and the arc-shaped rack can mesh with the rack top rod (9) when the driving wheel (8) rotates.

9. A touch screen pressure resistance detection device according to claim 8, characterized in that: A roller support frame (10) extending to the middle is fixed to the top end of the guide outer tube (11), and a support wheel is provided at one end of the roller support frame (10) close to the rack top rod (9); the weighting mechanism comprises a positioning piece fixed to the upper surface of the hammer pressure block (26), and a counterweight block (30) is clamped between the positioning piece and the outer wall of the rack top rod (9).

10. A touch screen pressure resistance detection method, comprising a touch screen pressure resistance detection device as claimed in claim 8, characterized in that: The following steps are involved: Step 1: Pull out the drawer panel (13) and the drawer support plate (12), and place the mobile phone body (14) to be tested in the rectangular hole (1201), and then replace the appropriate counterweight block (30) according to the impact requirement; when replacing the counterweight block (30), just apply downward pressure to the top of the rack top rod (9) until the hammer pressure block (26) at its bottom is pressed down to the plane protruding from the bottom end of the static pressure column (16); then continue to press downward to clamp the new counterweight block (30) above the hammer pressure block (26); Then push the drawer support plate (12) into the detection position; Step 2: Turn on the hot air blower (20) according to the detection environment requirements until the temperature in the incubator (2) reaches the set detection temperature; at this time, add weight to the counterweight tray (24) and observe the reading of the force gauge (18). At this time, the pressure applied to the touch screen, i.e., the weight of the static pressure column (16) plus the reading on the force gauge (18), is superimposed; during the detection, the physical changes of the internal touch screen can be observed from the side observation window (201); for example, whether there are cracks on the screen, and whether the pre-played music can be played normally; Step 3: Further impact test, at this time, the reduction motor (7) is started again, and under the action of the arc-shaped rack and the rack top rod (9), the rack top rod (9) and the hammer pressure block (26) at its bottom and the weighting mechanism are first slowly lifted to a certain height, and then quickly dropped under the action of the reset energy storage spring, and then hit the touch screen below, forming an impact test; according to the test needs, the length of the arc-shaped rack can be changed, and then the reset energy storage spring can be contracted to different lengths, and then different impact energies can be generated when it is released.

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