Under-screen fingerprint tester

Abstract

The present invention discloses an under-screen fingerprint tester, and relates to the field of fingerprint testers. The under-screen fingerprint tester includes a test bench, and a mobile phone tray and a pressure control mechanism are arranged on the top of the test bench; the invention adopts a design method combining a spherical surface and an equal height segment, so that the structure can float in the translation direction during movement, and when reaching the working position, the point contact between the spherical surface and the plane allows the structure to float in the rotation direction, which greatly reduces the influence of the tilt caused by processing and assembly errors on the test, and reduces the debugging time; at the same time, the structure is simple, the manufacturing cost is reduced, and the module is made more compact, so that the efficiency of the under-screen fingerprint test is higher, more accurate, and the product is more competitive; by changing the size of the input signal, the control of the downward pressure of the low-friction cylinder is completed quickly and stably, and multiple groups of low-friction cylinders can be controlled at the same time, and the operation is simple, convenient and efficient.

Description

Technical Field

[0001] The present invention relates to the technical field of fingerprint testers, and in particular to an under-screen fingerprint tester. Background Art

[0002] There are two main types of traditional floating methods. One is to use the gap between two parts to avoid jamming between the two parts during movement. However, this floating method is a low-pair constraint through surface-to-surface contact and can only float in the translation direction. The other ball-head floating method combines the inner spherical surface with the outer spherical surface, allowing the two to rotate freely. However, this method is completely restricted in the translation direction, has a bloated structure, and has high manufacturing costs.

[0003] The traditional pressure control method is to control the pressure by the weight of the weight. It is often difficult to estimate the required weight of the weight in the early stage of design. During debugging, the weight needs to be repeatedly added and subtracted to achieve the required pressure. When the pressure requirement is high or the number of tests is large, the weight of the entire module will increase.

[0004] When testing different models of mobile phones, it is necessary to replace a different USB cable, which is costly and takes up space in the warehouse. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention discloses an under-screen fingerprint tester to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an under-screen fingerprint tester, comprising:

[0007] A test bench, the top of which is provided with a mobile phone tray and a pressure control mechanism;

[0008] A mobile phone tray, the mobile phone tray comprising a tray bottom plate, a USB insertion module is arranged on one side of the top of the tray bottom plate, a mobile phone clamping and positioning mechanism is arranged on the other side of the top of the tray bottom plate, and a mobile phone carrier is arranged on one side of the mobile phone clamping and positioning mechanism and one side of the USB insertion module;

[0009] Pressure control mechanism The pressure control mechanism includes an electrical proportional valve, a fingerprint test floating structure is arranged below the electrical proportional valve and above the mobile phone tray, and a direction-adjustable air nozzle is arranged on one side of the fingerprint test floating structure.

[0010] Preferably, the USB insertion module comprises a cylinder, a USB test connector is provided on one side of the cylinder, and a USB data cable is provided at one end of the USB test connector.

[0011] Preferably, the fingerprint test floating structure includes a low-friction cylinder, a spherical floating head is provided at the bottom of the low-friction cylinder, a floating head limit block is provided outside the spherical floating head, a rubber head mounting block is installed at the bottom of the floating head limit block, and a rubber head is provided at the bottom of the rubber head mounting block.

[0012] Preferably, a detection element is provided at the bottom of the mobile phone carrier and at the top of the tray bottom plate.

[0013] Preferably, a mobile phone is arranged on the outer wall of the mobile phone clamping and positioning mechanism and at the bottom of the rubber head.

[0014] Preferably, a slot is provided on the top of the floating head limit block, and a floating head rod is fixedly connected to the inner wall of the slot and the top of the spherical floating head.

[0015] The present invention discloses an under-screen fingerprint tester, which has the following beneficial effects:

[0016] 1. This invention adopts a design method that combines a spherical surface with equal-height segments, so that the structure can float in the translation direction during movement. When reaching the working position, the point contact between the spherical surface and the plane allows the structure to float in the rotation direction, which greatly reduces the impact of the tilt caused by processing and assembly errors on the test and reduces the debugging time. At the same time, the structure is simple, which reduces the manufacturing cost and makes the module more compact, making the under-screen fingerprint test more efficient, more accurate, and the product more competitive.

[0017] 2. The invention adopts a combination of an electric proportional valve, a low-friction cylinder and a quick-exhaust valve. By changing the size of the input signal, the downward pressure of the low-friction cylinder can be quickly and stably controlled, and multiple groups of low-friction cylinders can be controlled at the same time. The operation is simple, convenient and efficient, making the under-screen fingerprint test more efficient and accurate, helping customers simplify operations, shorten product testing cycles, improve product accuracy, and increase corporate product competitiveness; at the same time, due to the design of using air pressure to control pressure, the pressure switching can be completed accurately and quickly; the USB test connector and the USB data cable are separated, that is, a conversion structure is designed on the USB module. Each time the test mobile phone model is changed, only the USB connector of the conversion structure needs to be replaced, which is very convenient to use. In order to match the new USB connector, a corresponding limit structure is also made on the USB module to ensure stability in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the overall external structure of the present invention;

[0019] Figure 2 It is a front view of the overall structure of the present invention;

[0020] Figure 3It is a top view of the overall structure of the present invention;

[0021] Figure 4 It is a side view of the overall structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the mobile phone tray of the present invention;

[0023] Figure 6 This is a schematic diagram of the split mobile phone tray structure of the present invention;

[0024] Figure 7 It is a bottom view of the structural pressure control mechanism of the present invention;

[0025] Figure 8 This is a schematic diagram of the USB insertion module structure of the present invention;

[0026] Fig. 9 This is a schematic diagram of the floating structure of the structural fingerprint test of the present invention.

[0027] In the figure: 1. test bench; 2. mobile phone tray; 21. tray bottom plate; 22. detection element; 23. USB insertion module; 230. USB data cable; 231. USB test connector; 232. cylinder; 24. mobile phone carrier board; 25. mobile phone clamping and positioning mechanism; 3. pressure control mechanism; 31. fingerprint test floating structure; 310. low friction cylinder; 311. spherical floating head; 312. floating head limit block; 313. rubber head mounting block; 314. rubber head; 32. electric proportional valve; 33. direction-adjustable air nozzle. DETAILED DESCRIPTION

[0028] The embodiment of the present invention discloses an under-screen fingerprint tester, such as Figure 1-9 As shown, including:

[0029] A test bench 1, a mobile phone tray 2 and a pressure control mechanism 3 are arranged on the top of the test bench 1;

[0030] The fingerprint tester is composed of a test bench 1, a mobile phone tray 2 and a pressure control mechanism 3.

[0031] The mobile phone tray 2 comprises a tray bottom plate 21, a USB insertion module 23 is arranged on one side of the top of the tray bottom plate 21, a mobile phone clamping and positioning mechanism 25 is arranged on the other side of the top of the tray bottom plate 21, and a mobile phone carrier plate 24 is arranged on one side of the mobile phone clamping and positioning mechanism 25 and one side of the USB insertion module 23;

[0032] The mobile phone carrier plate 24 can carry four mobile phones at the same time, the mobile phone clamping and positioning mechanism 25 fixes the mobile phones, and there are four USB insertion modules 23, and the connectors can be replaced. The mobile phone carrier plate 24 and the tray bottom plate 21 are both split-type designs, and can quickly change models when detecting mobile phones of different models.

[0033] The pressure control mechanism 3 includes an electrical proportional valve 32, and a fingerprint test floating structure 31 is provided below the electrical proportional valve 32 and above the mobile phone tray 2;

[0034] There are three electrical proportional valves 32, each of which corresponds to a row of fingerprint test floating structures 31. The fingerprint test floating structure 31 has three rows and four columns of fingerprint test floating structures 31. Each column has three rubber heads 314 with different functions. Each column corresponds to a mobile phone. Four mobile phones can be tested at the same time. The position of the under-screen fingerprint module on the mobile phone is fixed, so each row of fingerprint test floating structures 31 needs to be moved to the top of the specified position of the mobile phone in turn, and then pressed down to complete the test. At the same time, multiple groups of low-friction cylinders 310 are controlled, and the operation is simple, convenient and efficient, making the under-screen fingerprint test more efficient.

[0035] The USB insertion module 23 includes a cylinder 232 , a USB test connector 231 is disposed on one side of the cylinder 232 , and a USB data line 230 is disposed on one end of the USB test connector 231 ;

[0036] The low-friction cylinder 310 drives the USB module to move and inserts or pulls out the USB test connector 231 from the USB port of the test phone. The USB test connector 231 and the USB data cable 230 were previously integrated, but now the USB test connector 231 and the USB data cable 230 are separately set, that is, a conversion structure is designed on the USB module, and the conversion structure includes two different USB test connectors 231 connected to each other. Each time the test phone model is changed, only the USB connector of the conversion structure needs to be replaced, which is very convenient to use.

[0037] The fingerprint test floating structure 31 includes a low-friction cylinder 310, a spherical floating head 311 is arranged at the bottom of the low-friction cylinder 310, a floating head limit block 312 is arranged outside the spherical floating head 311, a rubber head mounting block 313 is installed at the bottom of the floating head limit block 312, and a rubber head 314 is arranged at the bottom of the rubber head mounting block 313.

[0038] A detection element 22 is provided at the bottom of the mobile phone carrier 24 and at the top of the tray bottom plate 21;

[0039] The detection element 22 is designed to be hidden, and the mobile phone carrier board 24 has a corresponding detection hole, which will not be affected when the mobile phone carrier board 24 is replaced, thereby avoiding the uncertainty caused by replacing the mobile phone carrier board 24 to the greatest extent.

[0040] A direction-adjustable air nozzle 33 is provided on one side of the fingerprint test floating structure 31 and away from the mobile phone clamping and positioning mechanism 25;

[0041] When the direction-adjustable air nozzle 33 detects fingerprints under the mobile phone screen, the air nozzle first cleans the dust on the mobile phone screen.

[0042] A floating head limit block hole is provided at the top of the floating head limit block 312, and a floating head rod diameter is fixedly connected to the inner wall of the floating head limit block hole and the top of the spherical floating head 311;

[0043] There is a certain gap between the floating head rod diameter and the floating head limit block hole.

[0044] Working principle: Reference Figures 1 to 9 First, place the mobile phone on the mobile phone tray 2 and fix it with the mobile phone clamping and positioning mechanism 25. After judging whether there is a mobile phone through the detection element 22, the friction reducing cylinder 310 drives the USB module to move, and inserts or pulls out the USB test connector 231 into or out of the USB port of the test mobile phone. When changing the test mobile phone model, only the USB connector of the conversion structure needs to be replaced;

[0045] When performing fingerprint detection under the mobile phone screen, the direction-adjustable air nozzle 33 first cleans the dust on the mobile phone screen, and then changes the size of the input signal and the gas pressure output by the electrical proportional valve 32, and extends the low-friction cylinder 310, so that the spherical floating head 311 and the floating head limit block 312 are in face-to-face contact, and the rubber head 314 is pressed down vertically. After contacting the mobile phone screen, the low-friction cylinder 310 pushes the spherical floating head 311 and the rubber head mounting block 313 to form a point contact. At the same time, there is a certain gap between the floating head rod diameter and the floating head limit block hole, so the rubber head 314 can be adaptively tilted to fit the screen. At this time, the force of the low-friction cylinder 310 is still maintained at the center of the rubber head mounting block 313, avoiding the phenomenon of uneven contact force between the rubber head 314 and the screen resulting in failure of unilateral test.

[0046] Although the embodiments of the present invention are described with practical solutions, they do not constitute limitations on the meaning of the present invention. For those skilled in the art, it is obvious to modify the implementation scheme and combine it with other solutions based on this description.

Claims

1. The fingerprint tester under the screen is characterized by: include: A test bench (1), wherein a mobile phone tray (2) and a pressure control mechanism (3) are arranged on the top of the test bench (1); A mobile phone tray (2), the mobile phone tray (2) comprising a tray bottom plate (21), a USB insertion module (23) being arranged on one side of the top of the tray bottom plate (21), a mobile phone clamping and positioning mechanism (25) being arranged on the other side of the top of the tray bottom plate (21), and a mobile phone carrier plate (24) being arranged on one side of the mobile phone clamping and positioning mechanism (25) and one side of the USB insertion module (23); A pressure control mechanism (3), the pressure control mechanism (3) comprising an electric proportional valve (32), a fingerprint test floating structure (31) being arranged below the electric proportional valve (32) and above the mobile phone tray (2), and a direction-adjustable air nozzle (33) being arranged on one side of the fingerprint test floating structure (31); The fingerprint test floating structure (31) comprises a low-friction cylinder (310), a spherical floating head (311) is arranged at the bottom of the low-friction cylinder (310), a floating head limit block (312) is arranged outside the spherical floating head (311), a rubber head mounting block (313) is installed at the bottom of the floating head limit block (312), and a rubber head (314) is arranged at the bottom of the rubber head mounting block (313); The USB insertion module (23) comprises a cylinder (232), one side of the cylinder (232) is provided with a USB test connector (231), and one end of the USB test connector (231) is provided with a USB data line (230).

2. The under-screen fingerprint tester according to claim 1, characterized in that: A detection element (22) is provided at the bottom of the mobile phone carrier (24) and at the top of the tray bottom plate (21).

3. The under-screen fingerprint tester according to claim 1, characterized in that: A mobile phone is arranged on the outer wall of the mobile phone clamping and positioning mechanism (25) and at the bottom of the rubber head (314).

4. The under-screen fingerprint tester according to claim 1, characterized in that: A slot hole is provided on the top of the floating head limiting block (312), and a floating head rod is fixedly connected to the inner wall of the slot hole and to the top of the spherical floating head (311).

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