Automobile display screen backboard detection tool

Abstract

The application relates to an automobile display screen backboard detection tool, and belongs to the technical field of automobile part detection. The tool comprises a rack, a detection top frame mounted on the rack, a detection mechanism arranged on the rack and a display device electrically connected with the detection mechanism. The detection top frame is provided with a positioning pin for inserting a positioning hole of a display screen backboard. The detection top frame is provided with a middle detection area corresponding to a middle backboard. The detection mechanism comprises a deformation detection head for abutting against a lower surface of a backboard body. The number of the deformation detection heads is not less than three, and the deformation detection heads are arranged at intervals along the length direction of the backboard body. The application has the effect of detecting the deformation of the display screen backboard.

Description

Technical Field

[0001] This application relates to the field of automotive parts testing, and in particular to a testing fixture for automotive display screen back panels. Background Technology

[0002] With the rapid development of automotive intelligence, in-vehicle displays, capable of displaying navigation and audio information, are increasingly widely used in automobile manufacturing as automotive components. To improve operability and aesthetics, in-vehicle displays are evolving towards larger sizes, higher resolutions, and curved surfaces. These displays typically need to be mounted on the interior wall of the car using a compatible display back panel.

[0003] Reference Figure 1 The existing display screen back panel includes an arc-shaped back panel body 1. The back panel body 1 includes two side back panels 11 and a middle back panel 12 connecting the two side back panels 11. The side back panels 11 include snap fasteners 111 arranged along the edge, side mounting pin grooves 112 arranged at intervals on the bottom surface of the side back panels 11, and limiting holes 113 formed in the side back panels 11. Side pins 114 are arranged in the side mounting pin grooves 112. The middle back panel 12 includes intermediate mounting pin grooves 121 arranged at intervals, downwardly protruding mounting protrusions 122, and positioning holes 123 formed in the middle back panel 12. Intermediate pins 124 are provided in the intermediate mounting pin grooves 121.

[0004] Regarding the aforementioned technologies, when the display screen is mounted on the display screen back panel, the curvature of the display screen back panel needs to conform to the display screen. The inventors believe that when the left and right back panels are warped or the middle back panel is arched, it will affect the installation effect between the display screen and the display screen back panel. Therefore, there is a need to provide a device that can detect the deformation of the display screen back panel. Utility Model Content

[0005] In order to detect the deformation of the back panel of an automotive display screen, this application provides a tooling for detecting the back panel of an automotive display screen.

[0006] The technical solution for the automotive display screen back panel testing fixture provided in this application is as follows: A tooling for inspecting the back panel of an automotive display screen includes a frame, an inspection top frame mounted on the frame, an inspection mechanism disposed on the frame, and a display device electrically connected to the inspection mechanism; the inspection top frame is provided with a positioning pin for inserting into a positioning hole of the display screen back panel; the inspection top frame is provided with an intermediate inspection area corresponding to an intermediate back panel; the inspection mechanism includes a deformation detection head for abutting the lower surface of the back panel body, and the number of deformation detection heads is not less than three and they are spaced apart along the length direction of the back panel body.

[0007] By adopting the above technical solution, a testing frame and testing mechanism can be set up to inspect the back panel of an automotive display screen. Positioning pins inserted into positioning holes limit the back panel's position. At least three deformation detection heads, spaced apart along the length of the back panel, are positioned against the lower surface of the back panel body to detect deformation. A display device shows the detection results. Since the back panel body is made of alloy, if deformation occurs, the deformation detection heads cannot sense the metal surface of the back panel body. The display device, electrically connected to the testing mechanism, can then alert the testing personnel.

[0008] Optionally, the intermediate detection area is provided with an intermediate broken column detection head that abuts against the lower surface of the intermediate pin in the intermediate mounting pin groove; the detection top frame is provided with a side detection area corresponding to the side back plate; the detection mechanism further includes a side broken column detection head located in the side detection area and used to abut against the lower surface of the side pin in the side mounting pin groove.

[0009] By adopting the above technical solution, a middle broken pin detection head is set to abut the lower surface of the middle pin in the middle mounting pin groove to detect whether the middle pin is broken; a side broken pin detection head is set to abut the lower surface of the side pin in the side mounting pin groove to detect whether the side pin is broken, thereby improving the comprehensiveness and accuracy of the inspection of the automotive display screen back panel.

[0010] Optionally, the detection mechanism includes a snap-fit ​​detection head located in the side detection area and used to abut against the bottom surface of the snap-fit.

[0011] By adopting the above technical solution, the snap fastener detection head located in the side detection area can detect snap fastener breakage, thus improving the efficiency of snap fastener detection.

[0012] Optionally, the deformation detection head, the intermediate broken column detection head, the side broken column detection head, and the snap-fit ​​detection head are provided with a lifting and locking structure; the detection top frame is provided with mounting holes for the lifting and locking structure to be arranged; the lifting and locking structure includes a lifting thread provided on the outer surface of the deformation detection head / intermediate broken column detection head / side broken column detection head / snap-fit ​​detection head, an upper limit nut that cooperates with the lifting thread, and a lower limit nut that cooperates with the lifting thread.

[0013] By adopting the above technical solution, the lifting and locking structure of the deformation detection head, the intermediate broken column detection head, the side broken column detection head, and the snap-fit ​​detection head, through the cooperation of the lifting thread and the upper limit nut and the lower limit nut, can adjust and lock the detection head within the mounting hole, thereby adapting to different detection needs. At the same time, the setting of the two limit nuts also provides a stable lock for the deformation detection head, the intermediate broken column detection head, the side broken column detection head, and the snap-fit ​​detection head, improving the accuracy of the detection.

[0014] Optionally, the detection top frame includes a limiting post located in the side detection area and inserted into the limiting hole.

[0015] By adopting the above technical solution, the limiting post is inserted into the limiting hole located in the side detection area, which can limit the side of the back panel of the car display screen, improve the stability of the back panel body during detection, and make the detection results more accurate.

[0016] Optionally, the positioning pin has a supporting ring surface that abuts against the bottom surface of the back plate body.

[0017] By adopting the above technical solution, when the positioning pin is inserted into the positioning hole to position the back panel of the display screen, the support ring surface abuts against the bottom surface of the back panel body, which can play a supporting role for the back panel body.

[0018] Optionally, the positioning pin is lifted and installed on the detection top frame, and the detection top frame is further provided with a lifting mechanism for driving the positioning pin to rise and fall.

[0019] By adopting the above technical solution, the positioning pin can be raised and lowered on the testing top frame through the lifting mechanism, which facilitates insertion into the positioning hole of the display screen back panel, improves the convenience of testing operations, and can push out the display screen back panel after the test is completed, which facilitates the installation and removal of the display screen back panel.

[0020] Optionally, the lifting mechanism includes an electric push rod located at the bottom of the positioning pin and a lifting motor that drives the electric push rod to rise and fall.

[0021] By adopting the above technical solution, the electric push rod is located at the bottom of the positioning pin and is driven to rise and fall by the lifting motor, which can realize the raising and lowering of the positioning pin, making it easy for the positioning pin to engage and disengage with the positioning hole of the display screen back panel, and facilitating the inspection and disassembly of the display screen back panel.

[0022] Optionally, the top frame of the test is provided with a weight-reducing through hole.

[0023] By adopting the above technical solution, the weight reduction through hole can reduce the weight of the inspection top frame, which is beneficial to reducing the overall weight of the tooling.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. A tooling for inspecting the back panel of an automotive display screen, which can inspect the back panel of an automotive display screen by setting an inspection top frame and an inspection mechanism; the setting of a deformation detection head can detect the deformation of the back panel body, and the display device can display the detection results of the deformation. 2. By setting up a central broken pin detection head, a side broken pin detection head, and a snap-fit ​​detection head, the detection of central and side pins is provided, improving the comprehensiveness and accuracy of automotive display screen back panel inspection; 3. By setting up liftable positioning pins and limit posts to provide positioning and limit for the display screen back panel, the stability of the back panel body during testing is improved, making the test results more accurate. The lifting mechanism at the bottom of the positioning pin facilitates the loading and unloading of the display screen back panel. Attached Figure Description

[0025] Figure 1 This is a structural schematic diagram of the backplate body in an embodiment of this application.

[0026] Figure 2 This is a schematic diagram of the detection top frame in Embodiment 1 of this application.

[0027] Figure 3 This is a schematic diagram of the frame structure in Embodiment 1 of this application.

[0028] Figure 4 This is a schematic diagram of the lifting and locking structure in Embodiment 1 of this application.

[0029] Figure 5 This is a structural schematic diagram of the lifting mechanism in Embodiment 2 of this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Back panel main body; 11. Side back panel; 111. Snap-fit ​​buckle; 112. Side mounting pin groove; 113. Limiting hole; 114. Side pin post; 12. Middle back panel; 121. Middle mounting pin groove; 122. Mounting protrusion; 123. Positioning hole; 124. Middle pin post; 2. Frame; 21. Frame base; 22. Support rod; 23. Lifting ring; 3. Inspection top frame; 31. Weight reduction through hole; 32. Inspection... 33. Measuring groove; 34. Supporting protrusion; 35. Positioning pin; 36. Limiting pin; 37. Supporting ring surface; 38. Limiting post; 49. Detection mechanism; 40. Deformation detection head; 41. Intermediate broken column detection head; 42. Side broken column detection head; 43. Snap-fit ​​detection head; 44. Upper limit nut; 45. Lower limit nut; 5. Display device; 51. Indicator light; 6. Lifting mechanism; 61. Electric push rod; 62. Lifting motor. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0032] Example 1: This application discloses a tooling for inspecting the back panel of an automotive display screen. (Refer to...) Figure 2 A tooling for inspecting the back panel of an automotive display screen includes a frame 2, an inspection top frame 3 mounted on the frame 2, an inspection mechanism 4 disposed on the frame 2, and a display device 5 electrically connected to the inspection mechanism 4.

[0033] Reference Figure 2 and Figure 3The frame 2 includes a square frame base 21 and support rods 22 fixed to the four corners and center of the frame base 21 and supported on the bottom surface of the detection top frame 3. The detection top frame 3 and the frame base 21 are also equipped with lifting rings 23 for hoisting and securing during operation. The detection top frame 3 has weight-reducing through holes 31, which can reduce the weight of the overall device and facilitate hoisting and movement by operators. A display device 5 is arranged on one side of the detection top frame 3, and its top surface has an indicator light 51 electrically connected to the corresponding signal of the detection mechanism 4. When the corresponding signal is detected, the indicator light 51 illuminates to indicate the detection status to the operator.

[0034] Reference Figure 1 and Figure 2 The top of the testing frame 3 has a testing groove 32 that matches the shape of the back panel body 1. The testing groove 32 contains a central testing area corresponding to the central back panel 12. The edge of the testing groove 32 abuts against the bottom surface of the two side back panels 11. The testing frame 3 has a side testing area corresponding to the side back panels 11 on the bottom side of each side back panel 11. The groove wall of the testing groove 32 has a support protrusion 33 for supporting the edge of the central back panel 12. The testing frame 3 has positioning pins 34 whose positions correspond one-to-one with the positioning holes 123 of the back panel body 1, allowing the positioning pins 34 to be inserted into the positioning holes 123 of the back panel body 1. The positioning pins 34 have a limiting pin 341 that passes through the positioning hole 123 and a supporting ring surface 342 located below the limiting pin 341 and abutting against the bottom surface of the back panel body 1. The testing frame 3 also includes a limiting post 35 located in the side testing area and inserted into the limiting hole 113.

[0035] Reference Figure 1 and Figure 2 The detection mechanism 4 includes a deformation detection head 41 located in the middle detection area and used to abut against the lower surface of the back plate body 1. There are at least three deformation detection heads 41, spaced apart along the length of the back plate body 1. The deformation detection heads 41 are respectively arranged on both sides and in the middle of the middle detection area to facilitate the detection of bending at both sides and arching in the middle of the back plate body 1. In this embodiment, there are three deformation detection heads 41, which are inductive metal proximity switches, model NBN4-M8GM50-E0 M8.

[0036] Reference Figure 1 and Figure 2When the backplate body 1 is placed on the detection top frame 3, the lower surface of the backplate body 1 abuts against the top surface of the deformation detection head 41. The deformation detection head 41 senses the backplate body 1 and can transmit a signal to the display device 5, and the corresponding indicator light 51 lights up. If the backplate body 1 deforms and the edges warp, the deformation detection head 41 on the corresponding side does not sense the backplate body 1 and cannot transmit a signal to the display device 5, so the corresponding indicator light 51 does not light up. If the backplate body 1 deforms and the middle arches, the deformation detection head 41 in the middle does not sense the backplate body 1 and cannot transmit a signal to the display device 5, so the corresponding indicator light 51 does not light up.

[0037] Reference Figure 1 and Figure 2 The detection mechanism 4 includes a central broken pin detection head 42 located in the central detection area and abutting the lower surface of the central pin 124 in the central mounting pin groove 121, and a side broken pin detection head 43 located in the side detection area and abutting the lower surface of the side pin 114 in the side mounting pin groove 112. Both the central broken pin detection head 42 and the side broken pin detection head 43 are vertically arranged on the detection top frame 3, with a circular detection plane on the top surface. In this embodiment, both the central broken pin detection head 42 and the side broken pin detection head 43 are inductive metal proximity switches, model NBN4-M8GM50-E0 M8.

[0038] Reference Figure 1 and Figure 2 When the intermediate pin 124 is installed in the intermediate mounting pin groove 121, the intermediate pin breakage detection head 42 senses the intermediate pin and sends a signal to the display device 5, and the corresponding indicator light 51 in the display device 5 lights up. When the intermediate pin is broken or the intermediate pin is not installed in the intermediate mounting pin groove 121, the top surface of the intermediate pin breakage detection head 42 does not sense the intermediate pin and cannot transmit a signal to the display device 5, and the corresponding indicator light 51 does not light up.

[0039] Reference Figure 1 and Figure 2 When the side pin 114 is installed in the side mounting pin groove 112, the side pin breakage detection head 43 senses the side pin and sends a signal to the display device 5, and the corresponding indicator light 51 in the display device 5 lights up. When the side pin is broken or the side pin is not installed in the side mounting pin groove 112, the top surface of the side pin breakage detection head 43 does not sense the side pin and cannot transmit a signal to the display device 5, and the corresponding indicator light 51 does not light up.

[0040] Reference Figure 1 and Figure 2The detection mechanism 4 also includes a snap-fit ​​detection head 44 located in the side detection area and used to abut against the bottom surface of the snap-fit ​​111. The snap-fit ​​detection head 44 is arranged vertically on the lower side of the corresponding snap-fit ​​111 on both sides of the back panel body 1, and the top surface of the snap-fit ​​detection head 44 is a circular detection plane. When the display back panel is placed on the detection top frame 3, the bottom surfaces of the snap-fit ​​111 on both sides of the back panel body 1 abut against the top surface of the snap-fit ​​detection head 44. At this time, the snap-fit ​​detection head 44 sends a signal to the display device 5, and the corresponding indicator light 51 in the display device 5 lights up; when the snap-fit ​​111 breaks, the snap-fit ​​detection head 44 does not sense the corresponding snap-fit ​​111 and cannot transmit a signal to the display device 5, and the corresponding indicator light 51 does not light up. In this embodiment, the snap-fit ​​detection head 44 is an inductive metal proximity switch, model NBN4-M8GM50-E0 M8.

[0041] Reference Figure 2 and Figure 4 The aforementioned deformation detection head 41, intermediate broken column detection head 42, side broken column detection head 43, and snap-fit ​​detection head 44 are all equipped with a lifting and locking structure. The detection top frame 3 has mounting holes for the lifting and locking structure. The lifting and locking structure includes a lifting thread on the outer surface of the deformation detection head 41 / intermediate broken column detection head 42 / side broken column detection head 43 / snap-fit ​​detection head 44, an upper limit nut 45 that mates with the lifting thread, and a lower limit nut 46 that mates with the lifting thread. The deformation detection head 41, intermediate broken column detection head 42, side broken column detection head 43, and snap-fit ​​detection head 44 are all positioned according to the shape of the bottom surface of a standard display backplate. The upper limit nut 45 is placed on the top surface of the detection top frame 3, and the lower limit nut 46 is placed on the bottom surface of the detection top frame 3. Together with the lifting thread, the adjusted deformation detection head 41, intermediate broken column detection head 42, side broken column detection head 43, and snap-fit ​​detection head 44 are fixed to the detection top frame 3 for testing the backplate body 1.

[0042] Reference Figures 1 to 4 The implementation principle of the automotive display screen back panel inspection fixture in this application embodiment is as follows: align the positioning hole 123 of the back panel body 1 with the positioning pin 34, align the limiting hole 113 on the back panel body 1 with the limiting post 35, and then place the back panel body 1 on the inspection top frame 3; the deformation detection head 41 in the inspection mechanism 4 detects the deformation of the back panel body 1, the intermediate broken post detection head 42 detects the breakage and missingness of the intermediate pin, the side broken post detection head 43 detects the breakage and missingness of the side pin, and the snap fastener detection head 44 detects the breakage of the snap fastener 111, and transmits the inspection information to the display device 5.

[0043] Example 2: Compared with the automotive display screen back panel inspection fixture in Example 1, Example 2 is identical in structure to Example 1, except for the different mounting position of the positioning pin 34 at the bottom.

[0044] Reference Figure 1 and Figure 5 The testing top frame 3 is equipped with a lifting mechanism 6 that drives the positioning pin 34 to rise and fall. The lifting mechanism 6 includes an electric push rod 61 located at the bottom of the positioning pin 34 and a lifting motor 62 that drives the electric push rod 61 to rise and fall. The bottom of the lifting motor 62 is fixed to the upper surface of the frame base 21, and the output shaft of the lifting motor 62 is vertically fixed to the bottom of the electric push rod 61. The top of the electric push rod 61 abuts against the bottom of the positioning pin 34. When the lifting motor 62 is started, the electric push rod 61 is driven to rise and fall, which can lift the positioning pin 34. The positioning hole 123 on the back plate body 1 is aligned with the positioning pin 34, and the support ring surface 342 of the positioning pin 34 abuts against the bottom surface of the back plate body 1. The lifting motor 62 is started to lower the positioning pin 34. At this time, the back plate body 1 is placed on the testing top frame 3. After the test is completed, the lifting motor 62 is started to lift the positioning pin 34, lifting the back plate body 1, which is convenient for removing the back plate body 1 from the testing top frame 3.

[0045] Reference Figures 1 to 5 The implementation principle of the automotive display screen back panel inspection fixture in this application embodiment is as follows: The lifting mechanism 6 is activated to raise the positioning pin 34, the positioning hole 123 of the back panel body 1 is aligned with the positioning pin 34, and the support ring surface 342 of the positioning pin 34 abuts against the bottom surface of the back panel body 1; the positioning pin 34 is lowered, the limiting hole 113 on the back panel body 1 is aligned with the limiting post 35, and the back panel body 1 is placed on the inspection top frame 3; the deformation detection head 41 in the inspection mechanism 4 detects the deformation of the back panel body 1, the intermediate broken post detection head 42 detects the breakage and missing of the intermediate pin, the side broken post detection head 43 detects the breakage and missing of the side pin, and the snap fastener detection head 44 detects the breakage of the snap fastener 111, and transmits the inspection information to the display device 5; after the inspection is completed, the lifting mechanism 6 is activated to raise the positioning pin 34, and the positioning pin 34 pushes the back panel body 1 out of the inspection top frame 3.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A tooling for inspecting the back panel of an automotive display screen, characterized in that, The device includes a frame (2), a detection top frame (3) mounted on the frame (2), a detection mechanism (4) disposed on the frame (2), and a display device (5) electrically connected to the detection mechanism (4); the detection top frame (3) is provided with a positioning pin (34) for inserting into the positioning hole (123) of the display screen back plate; the detection top frame (3) is provided with an intermediate detection area corresponding to the intermediate back plate (12); the detection mechanism (4) includes a deformation detection head (41) for abutting the lower surface of the back plate body (1), and the number of the deformation detection heads (41) is not less than three and they are arranged at intervals along the length direction of the back plate body (1).

2. The automotive display screen back panel inspection fixture according to claim 1, characterized in that, The intermediate detection area is provided with an intermediate broken column detection head (42) that abuts against the lower surface of the intermediate pin (124) in the intermediate mounting pin groove (121); the detection top frame (3) is provided with a side detection area corresponding to the side back plate (11); the detection mechanism (4) further includes a side broken column detection head (43) located in the side detection area and used to abut against the lower surface of the side pin (114) in the side mounting pin groove (112).

3. The automotive display screen back panel inspection fixture according to claim 2, characterized in that, The detection mechanism (4) includes a snap fastener detection head (44) located in the side detection area and used to abut against the bottom surface of the snap fastener (111).

4. The automotive display screen back panel inspection fixture according to claim 3, characterized in that, The deformation detection head (41), the intermediate broken column detection head (42), the side broken column detection head (43), and the snap-fit ​​detection head (44) are provided with a lifting and locking structure; the detection top frame (3) is provided with mounting holes for the lifting and locking structure to be arranged; the lifting and locking structure includes a lifting thread provided on the outer surface of the deformation detection head (41) / intermediate broken column detection head (42) / side broken column detection head (43) / snap-fit ​​detection head (44), an upper limit nut (45) that cooperates with the lifting thread, and a lower limit nut (46) that cooperates with the lifting thread.

5. The automotive display screen back panel inspection fixture according to claim 2, characterized in that, The detection top frame (3) includes a limiting post (35) located in the side detection area and inserted into the limiting hole (113).

6. The automotive display screen back panel inspection fixture according to claim 1, characterized in that, The positioning pin (34) has a supporting ring surface (342) that abuts against the bottom surface of the back plate body (1).

7. The automotive display screen back panel inspection fixture according to claim 6, characterized in that, The positioning pin (34) is mounted on the detection top frame (3), and the detection top frame (3) is also provided with a lifting mechanism (6) for driving the positioning pin (34) to rise and fall.

8. The automotive display screen back panel inspection fixture according to claim 7, characterized in that, The lifting mechanism (6) includes an electric push rod (61) located at the bottom of the positioning pin (34) and a lifting motor (62) that drives the electric push rod (61) to rise and fall.

9. The automotive display screen back panel inspection fixture according to claim 1, characterized in that, The top frame (3) of the test is provided with a weight reduction through hole (31).

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