False pressure testing device for touch screen function sheet

Abstract

The utility model discloses a touch screen function sheet false pressure test device, which comprises a test board and a positioning frame, a false pressure mechanism is arranged on the surface of the test board, a driving mechanism is arranged in the false pressure mechanism, and a false pressure groove is formed in the surface of the positioning frame; the false pressing mechanism comprises a support, a mounting shell is slidably connected to the surface of the support, a supporting rod is fixed to the top of the mounting shell, a sliding block is slidably connected to the surface of the supporting rod, a rack rod is fixed to the surface of the sliding block, a first rotating shaft is rotatably connected to the inner wall of the mounting shell, and a pull rod is fixed to one end of the first rotating shaft. A driving gear is fixed to the surface of the first rotating shaft, two screws are rotationally connected to the surface of the bottom of the mounting shell, and nuts are in threaded connection to the surfaces of the screws. According to the utility model, through mutual cooperation of a plurality of mechanisms, downward pressing force is converted into rotating force, and the downward pressing force of the pressing plate is relatively consistent by rotating the screw rod, so that the accuracy of a test result is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of touch screen function chip testing, in particular to a false pressing test device for touch screen function chips. Background Technique

[0002] In recent years, with the development of technology, the application of touch screens has become more and more extensive. A circuit board PCB is provided on the touch screen, and conductive electrodes are usually contained at the end of the circuit board PCB to be connected to other components to achieve electrical conduction. In order to avoid poor pressing during the use of the touch screen, it is usually necessary to perform false pressing tests on the circuit board PCB on the touch screen.

[0003] After retrieval, the Chinese patent with the publication number CN220671577U discloses a false pressing test device for touch screen function chips.

[0004] The utility model includes a test rack, a pressing plate and a downward pressing assembly. Multiple sections of FPC are placed on the test rack. A positioning frame for placing touch screen function chips is provided on the test rack. A pressing strip is installed on one side of the pressing plate close to the positioning frame. The downward pressing assembly is used to drive the pressing plate to perform lifting movement in the vertical direction and drive the pressing strip to press and conduct the touch screen function chip and multiple sections of FPC, so as to perform false pressing tests on the touch screen function chips. By driving the pressing plate to perform lifting movement in the vertical direction through the downward pressing assembly and driving the pressing strip to press and conduct the touch screen function chip and multiple sections of FPC, false pressing tests are performed on the touch screen function chips, and thus a false pressing test device for touch screen function chips is provided. Only one false pressing test is required for the touch screen function chip, the poor detection rate of the touch screen function chip is improved, the production efficiency is increased, and the production cost is saved.

[0005] This device makes the pressing plate press the function chip downward for false pressing by pulling the downward pressing wrench. However, due to the poor consistency of manual force, pulling the downward pressing handle too fast or too slow will result in different pressures provided by the pressing plate, and it is difficult to ensure that the pressing force is relatively consistent each time, resulting in a large deviation in the test results and inaccurate test results. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a false pressing test device for touch screen function chips. Through the cooperation of multiple mechanisms, the downward pressure is converted into a rotational force, and the rotational screw is used to make the downward pressure of the pressing plate relatively consistent each time, so as to improve the accuracy of the test results.

[0007] To achieve the above purpose, the utility model provides the following technical solution: A false pressing test device for touch screen function chips, including a test bench and a positioning frame. A false pressing mechanism is arranged on the surface of the test bench, a driving mechanism is arranged inside the false pressing mechanism, and a false pressing groove is formed on the surface of the positioning frame;

[0008] The false pressing mechanism includes a bracket, on the surface of which an installation shell is slidably connected. A support rod is fixed on the top of the installation shell, and a slider is slidably connected to the surface of the support rod. A rack bar is fixed on the surface of the slider. One end of a first rotating shaft is rotatably connected to the inner wall of the installation shell, and a pull rod is fixed at the other end of the first rotating shaft. A driving gear is fixed on the surface of the first rotating shaft. Two screw rods are rotatably connected to the bottom surface of the installation shell, and nuts are threadedly connected to the surfaces of the screw rods. A connecting frame is fixed on the surface of the nut, and a pressing plate is fixed at the bottom of the connecting frame. A pressing strip is fixed at the bottom surface of the pressing plate. An adjusting bolt threadedly penetrates through the surface of the slider.

[0009] As an optimization of a false pressing test device for a touch screen function sheet of the present utility model, the driving mechanism includes a second rotating shaft, a third rotating shaft and a fourth rotating shaft. A driven gear is fixed on the surface of the second rotating shaft, and the driven gear meshes with the pressing strip. A first small gear meshes with the bottom of the driven gear, and the first small gear is fixed on the surface of the third rotating shaft. A large gear is fixed on the surface of the third rotating shaft, and a second small gear meshes with the bottom of the large gear. The second small gear is fixed on the surface of the fourth rotating shaft. Two first bevel gears are fixed on the surface of the fourth rotating shaft, and the surfaces of the first bevel gears mesh with second bevel gears. The second bevel gears are fixed on the tops of the screw rods.

[0010] As an optimization of a false pressing test device for a touch screen function sheet of the present utility model, a sliding groove is formed on the surface of the bracket, and two fastening bolts threadedly penetrate through the surface of the installation shell.

[0011] As an optimization of a false pressing test device for a touch screen function sheet of the present utility model, a limiting plate is fixed on the top of the support rod.

[0012] As an optimization of a false pressing test device for a touch screen function sheet of the present utility model, a support frame is fixed at the bottom of the installation shell, and the bottom of the screw rod is rotatably connected to the surface of the support frame.

[0013] As an optimization of a false pressing test device for a touch screen function sheet of the present utility model, a guide rod is fixed at the bottom of the installation shell, and the surface of the guide rod slidably penetrates through the connecting frame.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] With the setting of the false pressing mechanism in the present utility model, the force received by the functional sheet during false pressing is relatively consistent. Pulling the pull rod can cause the first rotating shaft to drive the driving gear to rotate, enabling the driving gear to drive the rack bar to move downward. During the downward movement of the rack bar, the rack bar will drive the two side screws to rotate synchronously through the driving mechanism. When the screws rotate, the nuts can drive the connecting frames to move downward on the screw surfaces, enabling the pressing plate to drive the pressing strips to perform false pressing on the FPC and the functional sheet inside the false pressing groove. When the screws rotate, the axial movement amount thereof is fixed. For each rotation, the distance that the nut advances along the axis is equal to the pitch of the screw. Due to the tight meshing between the threads, most of the friction is transformed from sliding friction to rolling friction, reducing energy loss and force fluctuations, making the force transmission efficient and stable. This precise linear displacement conversion ability is the basis for realizing the control of the pressing force. The axial driving force generated by rotating the screws is very stable and will not affect the pressing force of the pressing plate due to the too fast or too slow speed of the traditional manual pulling of the downward pressing wrench, thus ensuring the relative consistency of the pressing force of the pressing plate, thereby improving the accuracy of the false pressing result. Rotating the adjusting bolt can limit the maximum stroke of the rack bar, thereby achieving the effect of changing the downward pressing distance of the pressing plate, so as to adapt to the detection requirements of functional sheets with more thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 is a three-dimensional structural schematic diagram of another perspective of the present utility model;

[0018] Figure 3 is a structural schematic diagram of the false pressing mechanism in the present utility model;

[0019] Figure 4 is a structural schematic diagram of the driving mechanism in the present utility model;

[0020] Figure 5 is a partial structural schematic diagram of the false pressing mechanism in the present utility model;

[0021] Figure 6 For the present utility model Figure 4 is an enlarged structural schematic diagram of part A therein.

[0022] In the figure: 1. Test bench; 2. False pressing mechanism; 201. Bracket; 202. Installation shell; 203. Support rod; 204. Slide block; 205. Rack bar; 206. First rotating shaft; 207. Pull rod; 208. Driving gear; 209. Screw rod; 210. Nut; 211. Connecting frame; 212. Pressing plate; 213. Pressing strip; 214. Support frame; 215. Guide rod; 216. Adjusting bolt; 217. Limiting plate; 218. Chute; 219. Fastening bolt; 3. Driving mechanism; 301. Second rotating shaft; 302. Driven gear; 303. Third rotating shaft; 304. First pinion; 305. Large gear; 306. Second pinion; 307. Fourth rotating shaft; 308. First bevel gear; 309. Second bevel gear; 4. Positioning frame; 5. False pressing groove. Specific implementation manner

[0023] Please refer to Figures 1-6 , a false pressing test device for a touch screen functional sheet, including a test bench 1 and a positioning frame 4. A false pressing mechanism 2 is arranged on the surface of the test bench 1, a driving mechanism 3 is arranged inside the false pressing mechanism 2, a false pressing groove 5 is formed on the surface of the positioning frame 4, and the positioning frame 4 is fixed on the top of the test bench 1;

[0024] The false pressing mechanism 2 enables the force received by the functional sheet during false pressing to be relatively consistent. The driving mechanism 3 is used to drive the internal components of the false pressing mechanism 2. The surface of the positioning frame 4 is used to place the functional sheet, and the false pressing groove 5 is used to place the FPC.

[0025] The false pressing mechanism 2 includes a bracket 201. An installation shell 202 is slidably connected to the surface of the bracket 201. A support rod 203 is fixed to the top of the installation shell 202. A slide block 204 is slidably connected to the surface of the support rod 203. A rack bar 205 is fixed to the surface of the slide block 204. The rack bar 205 penetrates into the installation shell 202. A first rotating shaft 206 is rotatably connected to the inner wall of the installation shell 202. One end of the first rotating shaft 206 penetrates out of the installation shell 202. A pull rod 207 is fixed to one end of the first rotating shaft 206. A driving gear 208 is fixed to the surface of the first rotating shaft 206. The driving gear 208 meshes with the rack bar 205. Two screw rods 209 are rotatably connected to the bottom surface of the installation shell 202. Nuts 210 are threadedly connected to the surfaces of the screw rods 209. A connecting frame 211 is fixed to the surface of the nut 210. A pressing plate 212 is fixed to the bottom of the connecting frame 211. A pressing strip 213 is fixed to the bottom surface of the pressing plate 212. An adjusting bolt 216 is threadedly penetrated through the surface of the slide block 204;

[0026] Pulling the pull rod 207 can cause the first rotating shaft 206 to drive the driving gear 208 to rotate, enabling the driving gear 208 to drive the rack bar 205 to move downward. During the downward movement of the rack bar 205, the rack bar 205 will drive the two side screw rods 209 to rotate synchronously through the driving mechanism 3. When the screw rod 209 rotates, the nut 210 can drive the connecting frame 211 to move downward on the surface of the screw rod 209, so that the pressing plate 212 can drive the pressing strip 213 to perform a false pressing process on the FPC and the functional chip inside the false pressing groove 5. When the screw rod 209 rotates, its axial movement amount is fixed. For each rotation, the distance that the nut 210 advances along the axis is equal to the pitch of the screw rod 209. Due to the tight meshing between the threads, most of the friction is transformed from sliding friction to rolling friction, reducing energy loss and force fluctuations, making the force transmission efficient and stable. This precise linear displacement conversion ability is the basis for realizing the control of the pressing force. The axial driving force generated by rotating the screw rod 209 is very stable and will not affect the pressing force of the pressing plate 212 due to the too fast or too slow speed of the traditional manual pulling of the pressing wrench, thus ensuring the relative consistency of the pressing force of the pressing plate 212 and improving the accuracy of the false pressing result. Rotating the adjusting bolt 216 can limit the maximum stroke of the rack bar 205, thereby achieving the effect of changing the downward pressing distance of the pressing plate 212 and adapting to the detection requirements of functional chips with more thicknesses.

[0027] Further, the driving mechanism 3 includes a second rotating shaft 301, a third rotating shaft 303 and a fourth rotating shaft 307. The second rotating shaft 301, the third rotating shaft 303 and the fourth rotating shaft 307 are all rotatably connected to the inner wall of the mounting shell 202. A driven gear 302 is fixed on the surface of the second rotating shaft 301. The driven gear 302 meshes with the pressing strip 213. A first small gear 304 is meshed at the bottom of the driven gear 302. The first small gear 304 is fixed on the surface of the third rotating shaft 303. A large gear 305 is fixed on the surface of the third rotating shaft 303. A second small gear 306 is meshed at the bottom of the large gear 305. The second small gear 306 is fixed on the surface of the fourth rotating shaft 307. Two first bevel gears 308 are fixed on the surface of the fourth rotating shaft 307. A second bevel gear 309 is meshed on the surface of the first bevel gear 308. The second bevel gear 309 is fixed on the top of the screw rod 209;

[0028] When the rack bar 205 moves downward, the rack bar 205 will drive the driven gear 302 to rotate, and the driven gear 302 will drive the first small gear 304 to accelerate the rotation of the third rotating shaft 303. At the same time, the large gear 305 on the surface of the third rotating shaft 303 will also drive the fourth rotating shaft 307 to accelerate the rotation through the second small gear 306, enabling the two first bevel gears 308 to drive the screw rod 209 to rotate rapidly through the second bevel gear 309, thus realizing the effect of pulling down the pull rod 207 and making the screw rod 209 rotate rapidly.

[0029] Furthermore, a chute 218 is provided on the surface of the bracket 201, and two fastening bolts 219 are threadedly penetrated through the surface of the mounting shell 202;

[0030] By removing the fastening bolts 219 from the chute 218 and the surface of the mounting shell 202, the mounting shell 202 can be disengaged from the bracket 201, so that the height of the mounting shell 202 can be adjusted more significantly.

[0031] Furthermore, a limiting plate 217 is fixed to the top of the support rod 203;

[0032] The limiting plate 217 can limit the top moving position of the rack bar 205 to prevent the rack bar 205 from moving upward excessively and disengaging from the mounting shell 202.

[0033] Furthermore, a support frame 214 is fixed to the bottom of the mounting shell 202, and the bottom of the screw rod 209 is rotatably connected to the surface of the support frame 214;

[0034] The support frame 214 can provide a supporting effect on the bottom of the screw rod 209 to prevent the bottom of the screw rod 209 from shaking when rotating.

[0035] Furthermore, a guide rod 215 is fixed to the bottom of the mounting shell 202, and the surface of the guide rod 215 slidably penetrates through the connecting frame 211;

[0036] The guide rod 215 can provide a guiding effect for the connecting frame 211, making the connecting frame 211 more stable when moving.

[0037] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A touch screen functional sheet false pressure test device, comprising a test bench (1) and a positioning frame (4), characterized in that: The surface of the test bench (1) is provided with a false pressure mechanism (2), a driving mechanism (3) is provided inside the false pressure mechanism (2), and a false pressure groove (5) is provided on the surface of the positioning frame (4); The false pressure mechanism (2) comprises a bracket (201), the surface of the bracket (201) is slidably connected to a mounting shell (202), a support rod (203) is fixed to the top of the mounting shell (202), a slider (204) is slidably connected to the surface of the support rod (203), a rack rod (205) is fixed to the surface of the slider (204), the inner wall of the mounting shell (202) is rotatably connected to a first rotating shaft (206), one end of the first rotating shaft (206) is fixed to a pull rod (207), and the first A driving gear (208) is fixed on the surface of the rotating shaft (206); two screw rods (209) are rotatably connected to the bottom surface of the mounting shell (202); a nut (210) is threadedly connected to the surface of the screw rod (209); a connecting frame (211) is fixed on the surface of the nut (210); a pressing plate (212) is fixed to the bottom of the connecting frame (211); a pressure strip (213) is fixed to the bottom of the surface of the pressing plate (212); and an adjusting bolt (216) is threadedly penetrated through the surface of the slider (204).

2. A touch screen functional sheet false pressure testing device according to claim 1, characterized in that: The driving mechanism (3) comprises a second rotating shaft (301), a third rotating shaft (303) and a fourth rotating shaft (307); a driven gear (302) is fixed on the surface of the second rotating shaft (301); the driven gear (302) is meshed with a pressure bar (213); a first pinion (304) is meshed at the bottom of the driven gear (302); the first pinion (304) is fixed to the surface of the third rotating shaft (303); a large gear (305) is fixed on the surface of the third rotating shaft (303); a second pinion (306) is meshed at the bottom of the large gear (305); the second pinion (306) is fixed to the surface of the fourth rotating shaft (307); two first bevel teeth (308) are fixed on the surface of the fourth rotating shaft (307); the first bevel teeth (308) are meshed with second bevel teeth (309); the second bevel teeth (309) are fixed to the top of the screw rod (209).

3. A touch screen functional sheet false pressure testing device according to claim 1, characterized in that: A sliding groove (218) is provided on the surface of the bracket (201), and two fastening bolts (219) are threadedly penetrated through the surface of the mounting shell (202).

4. A touch screen functional sheet false pressure testing device according to claim 1, characterized in that: A limiting plate (217) is fixed on the top of the support rod (203).

5. A touch screen functional sheet false pressure testing device according to claim 1, characterized in that: A support frame (214) is fixed to the bottom of the installation shell (202), and the bottom of the screw rod (209) is rotatably connected to the surface of the support frame (214).

6. A touch screen functional sheet false pressure testing device according to claim 1, characterized in that: A guide rod (215) is fixed to the bottom of the installation shell (202), and the surface of the guide rod (215) slides through the connecting frame (211).

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