An inspection fixture

Abstract

The application belongs to the technical field of sensor detection, and discloses a detection jig, which comprises a workbench, a fixing assembly, a shielding piece, a detection assembly and a display assembly. The fixing assembly and the shielding piece and the detection assembly are arranged on the workbench. The fixing assembly is capable of fixedly mounting a PI element. The shielding piece is capable of moving towards the fixing assembly and being arranged between the transmitting end and the receiving end of the PI element. The detection assembly is capable of moving from a free position to a conducting position towards the fixing assembly to contact and electrically conduct with the pin of the PI element. The detection assembly is capable of detecting the PI element and judging whether the PI element is qualified. The display assembly is electrically connected with the detection assembly. The display assembly is capable of displaying the detection result information of the PI element according to the judgment information of the detection assembly. The detection jig provided by the application can screen PI elements with the same performance to make the reset positions of each lens relatively consistent, effectively improve the production efficiency and improve the yield of the lens.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sensor detection, and in particular to a detection jig. BACKGROUND

[0002] Photo-Interrupt, abbreviated as PI, is a kind of photo-interrupter. When the light emitted by the PI element is blocked, the PI element will generate an electrical signal. At present, PI elements are widely used in lens zoom technology.

[0003] In the prior art, the lens drives the displacement of the group by a software program control driving assembly to achieve the purpose of lens zoom, and determines whether the focusing group and the zoom group are reset by the electrical signal generated by the PI element.

[0004] At present, the inconsistent electrical signal generated by the PI element will cause the deviation of the reset position of each lens, so it is necessary to carry out complex and tedious debugging on the whole machine, which prolongs the manufacturing time of the whole machine and greatly reduces the production efficiency. SUMMARY

[0005] The purpose of the present application is to provide a detection jig which can screen PI elements with the same performance, so that the reset position of each lens can be relatively consistent and the production efficiency is improved.

[0006] To achieve this purpose, the present application adopts the following technical solutions:

[0007] A detection jig for detecting PI elements, the detection jig comprising:

[0008] a workbench;

[0009] a fixing assembly arranged on the workbench, the fixing assembly being capable of fixedly mounting a PI element thereon;

[0010] a shielding piece arranged on the workbench, the shielding piece being capable of moving towards the fixing assembly and being placed between the emitting end and the receiving end of the PI element;

[0011] a detection assembly arranged on the workbench, the detection assembly being capable of moving from a free position towards the fixing assembly to a conducting position to contact and electrically conduct with the pin of the PI element, and the detection assembly being capable of detecting the PI element and judging whether the PI element is qualified;

[0012] a display assembly electrically connected with the detection assembly, the display assembly being capable of displaying the detection result information of the PI element according to the judgment information of the detection assembly.

[0013] Optionally, the fixing assembly comprises:

[0014] A fixing block, wherein a plurality of fixing slots are spaced apart along its length, and the PI element can be placed in the fixing slots one by one;

[0015] A pressure plate is provided with a plurality of fixed pins spaced apart along its length. Each fixed pin corresponds to a fixed groove. The pressure plate can move from an initial position toward the fixed block to a fixed position so that the fixed pins press the PI element into the fixed groove.

[0016] Optionally, the fixing component further includes:

[0017] The slide rail and slider mechanism includes a slide rail disposed on the worktable and a slider slidably connected to the slide rail, and the pressure plate is fixed on the slider;

[0018] The first card connector is disposed on the workbench;

[0019] The second snap-fit ​​component is connected to the pressure plate. When the pressure plate is in the fixed position, the second snap-fit ​​component can snap-fit ​​with the first snap-fit ​​component to fix the pressure plate.

[0020] Optionally, the first snap-fit ​​component is provided with a slide groove and a first snap-fit ​​groove and a second snap-fit ​​groove communicating with the slide groove, wherein the first snap-fit ​​groove and the second snap-fit ​​groove are respectively provided at both ends of the slide groove;

[0021] The first end of the second latching member is rotatably connected to the pressure plate, and the second end of the second latching member passes through the slide groove. The second latching member can move within the slide groove to switch the pressure plate between the initial position and the fixed position.

[0022] When the pressure plate is placed in the initial position, the second snap-fit ​​member can rotate and snap into the first snap-fit ​​groove;

[0023] When the pressure plate is placed in the fixed position, the second snap-fit ​​member can rotate and snap into the second snap-fit ​​groove.

[0024] Optionally, it also includes:

[0025] An adjustment plate is provided on the workbench, and the adjustment plate is provided with a through hole, through which the shielding member passes;

[0026] A driving member is disposed in the through hole and located at the end of the shielding member facing away from the fixing component. The driving member can move along the through hole and drive the shielding member to move.

[0027] A first elastic body is disposed within the through hole. A first end of the first elastic body is connected to the adjusting plate, and a second end of the first elastic body is connected to the blocking member. The first elastic body is configured to force the blocking member to be moved toward the fixing component.

[0028] Optionally, the surface of the driving component is provided with an external thread, and the through hole is provided with an internal thread that matches and connects with the external thread of the driving component, and the driving component is threadedly connected to the through hole.

[0029] Optionally, the detection component includes:

[0030] A movable plate is provided with a detection probe, which can contact and conduct electricity with the pins of the PI element;

[0031] A guide assembly is disposed between the worktable and the movable plate, and the guide assembly is configured to guide the reciprocating movement of the movable plate relative to the fixed assembly;

[0032] A second elastic body, one end of which is connected to the worktable and the other end of which is connected to the movable plate, is configured to force the movable plate to move from the conducting position to the free position.

[0033] Optionally, the guiding component includes:

[0034] Guide shaft, mounted on the worktable;

[0035] A sliding bearing is fixedly connected to the movable plate, and the sliding bearing is slidably sleeved on the guide shaft.

[0036] Optionally, the detection component includes a measuring box that is electrically connected to and detects the PI element. The measuring box is equipped with a display screen that displays detection information of the PI element.

[0037] Optionally, the display component includes a green signal light and a red signal light electrically connected to the detection component. When the PI element detected by the detection component is qualified, the green signal light is lit and the red signal light is off; when the PI element detected by the detection component is unqualified, the green signal light is off and the red signal light is lit.

[0038] Beneficial effects:

[0039] The testing fixture provided by this invention first fixes a PI element onto a fixing assembly; second, it moves a blocking member and places it between the transmitting and receiving ends of the PI element; then, it moves the testing assembly to make contact with the pins of the PI element and establish electrical conductivity; finally, it displays qualified PI elements and assembles them into the lens. By using the testing fixture to screen PI elements with similar performance, each qualified PI element generates the same electrical signal, thereby ensuring that the reset position of each lens remains relatively consistent. This simplifies the lens adjustment process, effectively improves production efficiency, and increases the lens yield. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the detection fixture provided by the present invention from one perspective;

[0041] Figure 2 This is another schematic diagram of the detection fixture provided by the present invention.

[0042] Figure 3 This is a cross-sectional view of the testing fixture provided by the present invention;

[0043] Figure 4 This is a cross-sectional view of a portion of the structure of the testing fixture provided by the present invention;

[0044] Figure 5 This is a schematic diagram of the structure of the PI element provided by the present invention;

[0045] Figure 6 This is a schematic diagram of the structure of the fixing block provided by the present invention;

[0046] Figure 7 This is an exploded view of a portion of the structure of the testing fixture provided by the present invention;

[0047] Figure 8 This is a cross-sectional view of another part of the structure of the testing fixture provided by the present invention;

[0048] Figure 9 This is a schematic diagram of the shielding component provided by the present invention.

[0049] In the picture:

[0050] 100. Workbench;

[0051] 200. Fixing component; 210. Fixing block; 211. Support plate; 212. Mounting plate; 213. Fixing groove; 214. Clearance groove; 215. Perforation; 220. Pressure plate; 221. Fixing pin; 230. Slide rail slider mechanism; 240. First locking member; 241. Slide groove; 242. First locking groove; 243. Second locking groove; 244. Elongated hole; 250. Second locking member; 251. Hinge; 252. Grip;

[0052] 310. Shielding component; 311. Shielding part; 312. Annular protrusion; 313. Limiting protrusion; 320. Adjusting plate; 321. Through hole; 3211. First stepped hole; 3212. Second stepped hole; 3213. Limiting groove; 3214. Third stepped hole; 330. Driving component; 331. Connecting groove; 332. Receiving groove; 340. First elastic body;

[0053] 400, Detection component; 410, Moving plate; 411, Detection probe; 412, First circuit board; 420, Guiding component; 421, Guide shaft; 422, Sliding bearing; 430, Second elastomer; 440, Second circuit board;

[0054] 500, Display component; 510, Third circuit board; 511, Green signal light; 512, Red signal light; 600, PI element; 610, Transmitter; 620, Receiver; 630, Pin. Detailed Implementation

[0055] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0056] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0057] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0058] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0059] Reference Figures 1 to 5 As shown, this embodiment provides a testing fixture for detecting a PI element 600. The PI element 600 is a U-shaped photoelectric sensor, which includes a transmitter 610 and a receiver 620 arranged opposite to each other. Specifically, the testing fixture includes a worktable 100, a fixing component 200, a shielding component 310, a detection component 400, and a display component 500. The fixing component 200, the shielding component 310, and the detection component 400 are all mounted on the worktable 100. The PI element 600 can be fixedly mounted on the fixing component 200. The shielding component 310 can move toward the fixing component 200 and be positioned between the transmitting end 610 and the receiving end 620 of the PI element 600. The detection component 400 can move from the free position toward the fixing component 200 to the conducting position to contact the pins of the PI element 600 and conduct electricity. The detection component 400 can also detect the PI element 600 and determine whether the PI element 600 is qualified. The display component 500 is electrically connected to the detection component 400 and can display the detection result information of the PI element 600 based on the judgment information of the detection component 400.

[0060] In this embodiment, firstly, the PI element 600 is fixedly mounted on the fixing assembly 200; secondly, the blocking member 310 is moved and placed between the transmitting end 610 and the receiving end 620 of the PI element 600, blocking the light emitted by the transmitting end 610 so that the light cannot reach the receiving end 620, thereby causing the PI element 600 to generate an electrical signal; then, the detection assembly 400 is moved and made to contact and electrically conduct with the pins of the PI element 600; finally, the display assembly 500 displays the qualified PI elements 600 assembled into the lens. By using a detection fixture to screen PI elements 600 with the same performance, the electrical signals generated by each qualified PI element 600 are the same, thereby ensuring that the reset position of each lens is relatively consistent, simplifying the lens debugging process, effectively improving production efficiency, and increasing the lens yield.

[0061] In this embodiment, reference is made to Figures 3 to 4As shown, the fixing assembly 200 includes a fixing block 210 and a pressure plate 220. The fixing block 210 has multiple fixing slots 213 spaced apart along its length, and each PI element 600 can be placed in a corresponding slot 213. The pressure plate 220 has multiple fixing pins 221 spaced apart along its length, with each fixing pin corresponding to a fixing slot 213. The pressure plate 220 can move from its initial position toward the fixing block 210 to a fixed position so that the fixing pins 221 press the PI element 600 firmly into the fixing slot 213. The structure is simple and convenient for fixing the PI element 600. In this embodiment, due to the design of multiple fixing slots 213, multiple PI elements 600 can be detected simultaneously, effectively improving detection efficiency.

[0062] Specifically, the fixing pin 221 can be a spring-loaded pin, which includes a sleeve, a push rod, and a compression spring. The sleeve is disposed on the pressure plate 220, and a groove 241 is provided inside the sleeve. The push rod is inserted into the groove 241 and slidably connected to the groove 241. The compression spring is disposed inside the sleeve, with its first end connected to the sleeve and its second end connected to the push rod. In this embodiment, due to the presence of the compression spring, even if there are deviations in the size and installation position between the push rods, the push rod of each fixing pin 221 will simultaneously and stably press against the fixing PI element 600.

[0063] Specifically, both the fixing block 210 and the pressure plate 220 extend along the length of the worktable 100, and the fixing pin 221 extends along the width of the worktable 100. Figure 2 In the diagram, direction a represents the length of the worktable 100, and direction b represents the width of the worktable 100.

[0064] In this embodiment, reference is made to Figure 6 As shown, the fixing groove 213 has a relief groove 214 on the side facing the pressure plate 220. When the pressure plate 220 is in the fixed position, the end of the fixing pin 221 passes through the relief groove 214 to abut against the PI element 600, thereby fixing the PI element 600.

[0065] Furthermore, the side of the fixing groove 213 facing away from the pressure plate 220 is provided with a through hole 215 communicating with the fixing groove 213, and the shielding member 310 can be inserted through the through hole 215 and placed between the transmitting end 610 and the receiving end 620 of the PI element 600.

[0066] Furthermore, the fixing block 210 includes a support plate 211 and a mounting plate 212 disposed on the support plate 211. The fixing groove 213 and the clearance groove 214 are both disposed on the mounting plate 212, and a through hole 215 is formed between the support plate 211 and the mounting plate 212.

[0067] In this embodiment, reference continues to be made to... Figures 1 to 3As shown, the fixing assembly 200 also includes a slide rail slider mechanism 230, a first snap-fit ​​member 240, and a second snap-fit ​​member 250. The slide rail slider mechanism 230 includes a slide rail disposed on the worktable 100 and a slider slidably connected to the slide rail. The pressure plate 220 is fixed on the slider. The first snap-fit ​​member 240 is disposed on the worktable 100. The second snap-fit ​​member 250 is connected to the pressure plate 220. When the pressure plate 220 is in the fixed position, the second snap-fit ​​member 250 can snap-fit ​​with the first snap-fit ​​member 240 to fix the pressure plate 220, so as to ensure that the PI element 600 is pressed into the fixing groove 213 by the fixing pin 221 during the entire detection process.

[0068] Specifically, the slide rail extends along the width of the worktable 100.

[0069] Specifically, multiple slide rail slider mechanisms 230 are provided and spaced apart along the length of the worktable 100. Preferably, two slide rail slider mechanisms 230 are provided.

[0070] Specifically, the first latching member 240 is provided with a slide groove 241 and a first latching groove 242 and a second latching groove 243 communicating with the slide groove 241. The first latching groove 242 and the second latching groove 243 are respectively provided at both ends of the slide groove 241. The first end of the second latching member 250 is rotatably connected to the pressure plate 220, and the second end of the second latching member 250 passes through the slide groove 241. The second latching member 250 can move within the slide groove 241 to drive the pressure plate 220 to switch between the initial position and the fixed position. When the pressure plate 220 is in the initial position, the second latching member 250 can rotate and latch with the first latching groove 242. When the pressure plate 220 is in the fixed position, the second latching member 250 can rotate and latch with the second latching groove 243. The structure is simple and the operation is convenient.

[0071] Furthermore, two first latching components 240 are provided and symmetrically arranged on both sides of the workbench 100 along its length direction, and two second latching components 250 are provided and corresponding to the first latching components 240. The symmetrical design facilitates operation.

[0072] Furthermore, the first end of the second snap-fit ​​member 250 is provided with a hinge portion 251. The hinge portion 251 can be rotatably connected to the pressure plate 220 via an optical axis, or via an optical axis plus a bearing connection or other methods, without further limitations. In this embodiment, the second snap-fit ​​member 250 rotates around the width direction of the worktable 100.

[0073] Furthermore, the second end of the second connector 250 is provided with a grip portion 252, which may include, but is not limited to, a spherical or cylindrical shape, to improve the comfort of holding and moving the second connector 250.

[0074] Furthermore, the first snap-fit ​​groove 242 and the second snap-fit ​​groove 243 are both located below the slide groove 241 and form a U-shaped groove with the slide groove 241, which facilitates the snap-fit ​​of the second snap-fit ​​member 250 and effectively prevents the second snap-fit ​​member 250 from detaching.

[0075] Furthermore, the first snap-fit ​​component 240 is also provided with an elongated hole 244. The first snap-fit ​​component 240 can be fixed by threading a screw through the elongated hole 244 and screwing it into the workbench 100. The design of the elongated hole 244 facilitates the adjustment of the position of the first snap-fit ​​component 240.

[0076] In this embodiment, reference is made to Figures 7 to 9 As shown, the testing fixture also includes an adjusting plate 320, a driving member 330, and a first elastic body 340. The adjusting plate 320 is disposed on the worktable 100 and has a through hole 321. The shielding member 310 passes through the through hole 321. The driving member 330 is disposed in the through hole 321 and is located at the end of the shielding member 310 facing away from the fixing assembly 200. The driving member 330 can move along the through hole 321 and drive the shielding member 310 to move. The first elastic body 340 is disposed in the through hole 321. The first end of the first elastic body 340 is connected to the adjusting plate 320, and the second end of the first elastic body 340 is connected to the shielding member 310. The first elastic body 340 is configured to force the shielding member 310 to be moved toward the fixing assembly 200. In this embodiment, the driving member 330 moves toward the fixed block 210, causing the driving member 330 to press against the blocking member 310, thereby causing the blocking member 310 to move toward the PI element 600 on the fixed block 210. During this process, the first elastic body 340 accumulates elastic potential energy. When the driving member 330 moves away from the fixed block 210, the first elastic body 340 releases its elastic potential energy and acts on the blocking member 310, forcing the blocking member 310 to move toward the fixed block 210, thereby realizing the position adjustment of the blocking member 310. The structure is simple and easy to operate.

[0077] Specifically, the adjusting plate 320 is mounted on the support plate 211.

[0078] Specifically, the through hole 321 extends along the width direction of the worktable 100. Furthermore, the shielding member 310 can be columnar and extends along the width direction of the worktable 100.

[0079] In this embodiment, reference continues to be made to... Figures 7 to 9As shown, the shielding member 310 has a shielding part 311 at one end facing the fixing block 210. The shielding part 311 can be placed between the emitting end 610 and the receiving end 620 of the PI element 600 to block the light emitted by the emitting end 610 so that the light cannot reach the receiving end 620. In this embodiment, the shielding part 311 can be designed as a long strip according to the shape and size of the components used to shield the PI element 600 in the lens group, so as to better simulate the working scene of the PI element 600 in the lens.

[0080] Furthermore, the first elastic body 340 is sleeved on the blocking member 310. The through hole 321 includes a first stepped hole 3211 and a second stepped hole 3212 disposed at one end of the first stepped hole 3211 facing away from the fixing block 210. The first end of the first elastic body 340 abuts against the stepped surface between the first stepped hole 3211 and the second stepped hole 3212. The second end of the blocking member 310 facing away from the fixing block 210 is provided with an annular protrusion 312 along the circumferential direction, and the second end of the first elastic body 340 abuts against the annular protrusion 312. In this embodiment, the first stepped hole 3211 and the blocking member 310 can be a clearance fit between a shaft and a hole. Similarly, the second stepped hole 3212 and the annular protrusion 312 can also be a clearance fit between a shaft and a hole, so that the blocking member 310 is stably placed in the through hole 321. Preferably, the first elastic body 340 can be a spring.

[0081] Furthermore, a limiting protrusion 313 is provided on the periphery of the annular protrusion 312, and a limiting groove 3213 that matches and connects with the limiting protrusion 313 is provided on the surface of the second stepped hole 3212. The limiting protrusion 313 is placed in the limiting groove 3213, and the surface of the limiting protrusion 313 is in contact with the surface of the limiting groove 3213 to achieve circumferential positioning of the blocking member 310, effectively preventing the blocking member 310 from rotating and avoiding interference between the blocking part 311 and the PI element 600.

[0082] In this embodiment, reference continues to be made to... Figures 7 to 9 As shown, the surface of the driving member 330 is provided with an external thread, and the through hole 321 is provided with an internal thread that matches and connects with the external thread of the driving member 330. The driving member 330 is threadedly connected to the through hole 321. The through hole 321 also includes a third stepped hole 3214 provided at one end of the second stepped hole 3212 facing away from the fixing block 210. The driving member 330 is disposed in the third stepped hole 3214, and the third stepped hole 3214 is provided with an internal thread. In this embodiment, the stepped surfaces of the third stepped hole 3214 and the second stepped hole 3212 can limit the movement distance of the driving member 330 toward the fixing block 210, preventing the blocking member 310 from moving excessively.

[0083] Furthermore, the end of the drive component 330 facing away from the fixing block 210 is provided with a connecting groove 331 that matches and connects with the screwdriver. The connecting groove 331 may include, but is not limited to, a straight groove and a cross groove.

[0084] Furthermore, the end of the driving component 330 facing the fixing block 210 is provided with a receiving groove 332, and the end of the shielding component 310 facing away from the fixing block 210 is placed in the receiving groove 332, which facilitates the installation of the driving component 330 and the shielding component 310.

[0085] In this embodiment, reference continues to be made to... Figures 1 to 3 As shown, the detection assembly 400 includes a movable plate 410, a guide assembly 420, and a second elastic body 430. A detection probe 411 is provided on the movable plate 410. The detection probe 411 can contact and conduct electricity with the pin of the PI element 600. The guide assembly 420 is disposed between the worktable 100 and the movable plate 410. The guide assembly 420 is configured to guide the reciprocating movement of the movable plate 410 relative to the fixed assembly 200. One end of the second elastic body 430 is connected to the worktable 100, and the other end of the second elastic body 430 is connected to the movable plate 410. The second elastic body 430 is configured to force the movable plate 410 to move from the conducting position to the free position. In this embodiment, before detection, the moving plate 410 moves along the guide assembly 420 toward the fixed assembly 200 to the conducting position, so that the detection probe 411 contacts the pin of the PI element 600 and conducts electricity, thereby the detection assembly 400 can detect the PI element 600. During this process, the second elastic body 430 accumulates elastic potential energy. After the detection is completed, the second elastic body 430 releases the elastic potential energy and acts on the moving plate 410, so that the moving plate 410 moves to the free position. The structure is simple and easy to operate.

[0086] Preferably, the second elastic body 430 can be a spring.

[0087] Specifically, the detection probes 411 are provided in multiple ways and can be connected one-to-one with the pins of the PI element 600. In this embodiment, the PI element 600 includes 4 pins, that is, 4 detection probes 411 are provided at the positions corresponding to each PI element 600 on the moving plate 410.

[0088] Specifically, a first circuit board 412 is provided on the movable plate 410, and the detection probes 411 are all electrically connected to the first circuit board 412.

[0089] Specifically, the detection probe 411 can also be a spring-loaded pin.

[0090] Specifically, the guide assembly 420 includes a guide shaft 421 and a guide shaft 422. The guide shaft 421 is disposed on the worktable 100. The sliding bearing 422 is fixedly connected to the moving plate 410 and is slidably sleeved on the guide shaft 421. The second elastic body 430 is sleeved on the guide shaft 421. The structure is simple and easy to assemble.

[0091] Furthermore, two guide components 420 are provided and symmetrically arranged on both sides of the worktable 100 along its length direction, so that the moving plate 410 can move back and forth stably.

[0092] In this embodiment, the detection component 400 includes a measuring box (not shown in the figure), which is electrically connected to and detects the PI element 600. The measuring box is equipped with a display screen (not shown in the figure), which displays the detection information of the PI element 600. In this embodiment, before detection, the detection fixture needs to be adjusted. The specific adjustment method is as follows: First, fix one PI element 600 in one of the fixing slots 213; then, move the blocking member 310 corresponding to the fixing slot 213 toward the fixing component 200 and observe the detection information displayed on the screen. In this embodiment, the detection information is the voltage value of each pin of the PI element 600. When the voltage value on the display screen is within the actual range used by the PI element 600, fix the blocking member 310, remove the PI element 600 from the fixing slot 213, and fix it in another fixing slot 213. Repeat the above operation until all blocking members 310 are fixed. After adjustment, multiple PI elements 600 can be placed one-to-one into the fixing slots 213 and detected simultaneously. By adjusting and then testing, the performance of the PI elements 600 screened by the testing fixture is made to be the same. In this embodiment, the purpose of fixing the shielding member 310 can be achieved by fixing the driving member 330 with glue, and the glue will not affect the reusability of the testing fixture.

[0093] Preferably, the measuring box can be set below the workbench 100, but it can also be set in other positions on the workbench 100, and no further restrictions will be placed here.

[0094] Furthermore, the measuring box includes a second circuit board 440 and a voltage detection chip (not shown in the figure) disposed on the second circuit board 440. The display screen is electrically connected to the second circuit board 440, and the second circuit board 440 is electrically connected to the first circuit board 412 via wires. Both the first circuit board 412 and the second circuit board 440 are provided with terminals for connection to the wires. In this embodiment, the voltage value of each pin of the PI element 600 is detected by the voltage detection chip. Preferably, the wires can be ribbon cables.

[0095] Furthermore, the display component 500 is electrically connected to the measuring box, which also includes a control element (not shown in the figure) disposed on the second circuit board 440. The control element may include, but is not limited to, a microcontroller. The control element receives the voltage value detected by the voltage detection chip and sends it to the display screen for display. The control element determines whether the PI element 600 is qualified based on the voltage value detected by the voltage detection chip and displays the detection result information of the PI element 600 through the display component 500.

[0096] In this embodiment, reference continues to be made to... Figures 1 to 3 As shown, the display component 500 includes a green indicator light 511 and a red indicator light 512 electrically connected to the detection component 400. When the PI element 600 detected by the detection component 400 is qualified, the green indicator light 511 illuminates and the red indicator light 512 turns off; when the PI element 600 detected by the detection component 400 is unqualified, the green indicator light 511 turns off and the red indicator light 512 illuminates. Of course, the display component 500 can also be in other forms, which will not be further limited here.

[0097] Specifically, multiple green signal lights 511 and red signal lights 512 are provided, each corresponding to a fixed slot 213. Furthermore, both green signal lights 511 and red signal lights 512 are mounted on a third circuit board 510, which is fixed to the workbench 100 and extends along the length of the workbench 100. In this embodiment, the third circuit board 510 can also be electrically connected to the second circuit board 440 via wires, and the third circuit board 510 also has terminals for connecting to the wires.

[0098] In this embodiment, for connection methods not explicitly described herein, common fixing connection methods such as threaded connection, welding or bonding can be selected as needed.

[0099] For example, the method of using this testing fixture specifically includes the following steps:

[0100] S100, Calibrate the testing fixture.

[0101] In this embodiment, step S100 specifically includes the following steps:

[0102] S110. Fix a PI element 600 in one of the fixing slots 213.

[0103] Specifically, first, the PI element 600 is placed in the fixing groove 213; then, the gripping part 252 is pushed to move the pressure plate 220 toward the fixing block 210 to the fixing position via the second snap-fit ​​member 250, thereby causing the fixing pin 221 to press the PI element 600 tightly into the fixing groove 213. At the same time, tweezers or other tools are used to touch the PI element 600 and observe whether the surface of the PI element 600 is in contact with the bottom of the fixing groove 213. In this embodiment, if the PI element is suspended, it will affect the calibration accuracy.

[0104] S120, Move the movable plate 410 toward the fixed assembly 200 so that the detection probe 411 contacts the pin 630 of the PI element 600.

[0105] S130, move the blocking member 310 toward the fixing component 200 and observe the voltage value displayed on the display screen. When the voltage value on the display screen is within the range actually used by the PI element 600, fix the blocking member 310.

[0106] Specifically, the position of the shield 310 is adjusted by rotating the drive member 330 with a screwdriver, and the shield 310 is fixed by fixing the drive member 330 with glue.

[0107] Specifically, the testing fixture is not powered on during steps S110 and S120, but is powered on during step S130.

[0108] S140. Remove the PI element 600 from the fixing slot 213 and fix it in another fixing slot 213. Repeat steps S120 and S130 until all the blocking parts 310 are fixed.

[0109] In this embodiment, the testing fixture is calibrated using the same PI element 600 to ensure calibration accuracy.

[0110] It is worth mentioning that before the blocking part 310 is fixed, the position information of the blocking part 311 relative to the PI element 600 can be obtained by measuring the moving distance of the driving part 330. By comparing the position information, it is possible to effectively determine whether the calibration position of the blocking part 310 is accurate, and the position size that the PI element 600 needs to block in actual use can be estimated, which is convenient for the later assembly and debugging of the lens.

[0111] S200: Fix multiple PI elements 600 to be tested one by one in the fixing slot 213 and perform testing.

[0112] Specifically, for a qualified PI element 600, the green indicator light 511 illuminates and the red indicator light 512 goes out; for a failed PI element 600, the green indicator light 511 goes out and the red indicator light 512 illuminates.

[0113] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An inspection apparatus for inspecting a PI element (600), characterized by, The detection jig comprises: a workbench (100); a fixing assembly (200) arranged on the workbench (100), wherein a PI element (600) can be fixedly installed on the fixing assembly (200); a shielding piece (310) arranged on the workbench (100), wherein the shielding piece (310) can be moved towards the fixing assembly (200) and placed between the transmitting end (610) and the receiving end (620) of the PI element (600); a detection assembly (400) arranged on the workbench (100), wherein the detection assembly (400) can be moved from a free position to a conduction position towards the fixing assembly (200) to contact and electrically conduct with the pin of the PI element (600), and the detection assembly (400) can detect the PI element (600) and judge whether the PI element (600) is qualified; a display assembly (500) electrically connected with the detection assembly (400), wherein the display assembly (500) can display the detection result information of the PI element (600) according to the judgment information of the detection assembly (400); the fixing assembly (200) comprises: a fixing block (210) which is provided with a plurality of fixing grooves (213) at intervals along the length direction of the fixing block (210), and the PI element (600) can be placed in the fixing grooves (213) one by one; a pressing plate (220) which is provided with a plurality of fixing jacks (221) at intervals along the length direction of the pressing plate (220), and the fixing jacks (221) are arranged one by one corresponding to the fixing grooves (213), and the pressing plate (220) can be moved from an initial position to a fixing position towards the fixing block (210) to make the fixing jacks (221) press the PI element (600) tightly in the fixing grooves (213); the detection assembly (400) comprises: a moving plate (410) provided with a detection probe (411) thereon, wherein the detection probe (411) can contact and electrically conduct with the pin of the PI element (600); a guide assembly (420) arranged between the workbench (100) and the moving plate (410), wherein the guide assembly (420) is configured to guide the reciprocating movement of the moving plate (410) relative to the fixing assembly (200); a second elastic body (430) having one end connected with the workbench (100) and the other end connected with the moving plate (410), wherein the second elastic body (430) is configured to force the moving plate (410) to move from the conduction position to the free position.

2. The inspection tool of claim 1, wherein the fixing assembly (200) further comprises: a slide rail and slide block mechanism (230) comprising a slide rail arranged on the workbench (100) and a slide block in sliding connection with the slide rail, wherein the pressing plate (220) is fixed on the slide block; a first clamping piece (240) arranged on the workbench (100); A second clamping member (250) is connected with the pressing plate (220), and when the pressing plate (220) is located at the fixed position, the second clamping member (250) can be clamped with the first clamping member (240) to fix the pressing plate (220).

3. The inspection tool of claim 2, wherein The first clamping member (240) is provided with a sliding groove (241), and a first clamping groove (242) and a second clamping groove (243) in communication with the sliding groove (241), and the first clamping groove (242) and the second clamping groove (243) are respectively arranged at two ends of the sliding groove (241); The first end of the second clamping member (250) is rotationally connected with the pressing plate (220), and the second end of the second clamping member (250) is arranged in the sliding groove (241), and the second clamping member (250) can move in the sliding groove (241) to drive the pressing plate (220) to switch between the initial position and the fixed position; wherein, When the pressing plate (220) is placed at the initial position, the second clamping member (250) can be rotated and clamped with the first clamping groove (242); When the pressing plate (220) is placed at the fixed position, the second clamping member (250) can be rotated and clamped with the second clamping groove (243).

4. The inspection tool of claim 1, wherein Further comprising: An adjusting plate (320) is arranged on the workbench (100), and a through hole (321) is arranged on the adjusting plate (320), and the shielding member (310) is arranged in the through hole (321); A driving member (330) is arranged in the through hole (321) and located at one end of the shielding member (310) away from the fixing assembly (200), and the driving member (330) can move along the through hole (321) and drive the shielding member (310) to move; A first elastic body (340) is arranged in the through hole (321), a first end of the first elastic body (340) is connected with the adjusting plate (320), a second end of the first elastic body (340) is connected with the shielding member (310), and the first elastic body (340) is configured to force the shielding member (310) to be moved towards the fixing assembly (200).

5. The inspection tool of claim 4, wherein The surface of the driving member (330) is provided with external threads, and the through hole (321) is provided with internal threads matched with the external threads of the driving member (330), and the driving member (330) is threadedly connected with the through hole (321).

6. The inspection tool of claim 1, wherein The guiding assembly (420) comprises: A guide shaft (421) is arranged on the workbench (100); A sliding bearing (422) is fixedly connected with the moving plate (410), and the sliding bearing (422) is slidingly sleeved on the guide shaft (421).

7. The inspection tool of claim 1, wherein The detection assembly (400) comprises a measuring box, the measuring box can be electrically connected with the PI element (600) and detect the PI element (600), and a display screen is arranged on the measuring box, and the display screen can display detection information of the PI element (600).

8. The inspection tool of claim 1, wherein The display component (500) comprises a green signal lamp (511) and a red signal lamp (512) electrically connected with the detection component (400), when the PI element (600) detected by the detection component (400) is qualified, the green signal lamp (511) is lighted, and the red signal lamp (512) is extinguished; when the PI element (600) detected by the detection component (400) is unqualified, the green signal lamp (511) is extinguished, and the red signal lamp (512) is lighted.

Images