A floor standing keyboard key visual inspection apparatus

By designing a floor-standing keyboard inspection device, the problems of position adjustment and cable warping in existing devices when inspecting laptop keyboards have been solved, achieving high-precision keyboard character and cable inspection and meeting the needs of AI vision inspection.

CN224594448UActive Publication Date: 2026-08-04DONGGUAN PRIMAX ELECTRONIC & TEKLECOM PROD LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN PRIMAX ELECTRONIC & TEKLECOM PROD LTD
Filing Date
2025-06-10
Publication Date
2026-08-04

AI Technical Summary

Technical Problem

Existing keyboard inspection devices require adjusting the camera position when inspecting laptop keyboards, making it difficult to keep the ribbon cable flat, resulting in large errors in the captured photos. Furthermore, existing devices are difficult to adapt to the improved requirements of AI visual inspection.

Method used

The keyboard inspection equipment, designed for floor use, includes a machine base, keyboard fixture, vision inspection module, light source module, and auxiliary pressure plate module. It uses a transparent pressure plate to press the ribbon cable, and combines backlighting and surround light to improve image clarity. The position of the light source and camera can be adjusted to accommodate different keyboard models.

Benefits of technology

It enables simultaneous detection of keyboard characters and ribbon cables, improving the accuracy and adaptability of detection, meeting the needs of AI vision inspection, and the equipment can operate independently or be used in the production line.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a floor type keyboard key visual inspection equipment, it includes from below and upwards distribution and install on fixed frame's keyboard fixture, first light source module, visual inspection module, second light source module, and keyboard fixture includes keyboard positioning template and cable detection template, visual inspection unit includes the camera of suspension in keyboard fixture top, first light source module surrounds setting in keyboard fixture periphery, second light source module is located first visual inspection unit top, and the auxiliary pressing plate module is located keyboard fixture cable detection template's side, and the auxiliary pressing plate module has liftable transparent pressing plate. The utility model not only can carry out the detection to the character on keyboard, and utilize auxiliary pressing plate module can simultaneously carry out the detection to the keyboard's wire arrangement. In addition, the whole detection equipment of the utility model adopts floor type design, not only can independent operation, also can directly enter the existing keyboard production line.
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Description

Technical Field

[0001] This utility model relates to the technical field of keyboard inspection equipment, and specifically to a floor-standing keyboard key visual inspection device. Background Technology

[0002] After computer keyboards are manufactured, the characters on the keys need to be inspected. Current inspection methods typically employ image recognition, which involves taking a picture of the keyboard surface with a camera, processing the image, and analyzing whether the characters in the photo match a standard image. See patent application CN114299496A, which discloses a technical solution for a "keyboard key character detection method." This technical solution uses image recognition.

[0003] For laptops, the keyboard is integrated into the laptop body and connected to the computer via a cable, such as an FPC ribbon cable. During product manufacturing, the contact points (commonly known as gold fingers) on the FPC ribbon cable may be damaged, leading to poor contact at the connection between the keyboard and the laptop. Therefore, current laptop keyboard testing also includes testing the cable portion. See utility model patent CN214472814U, which discloses "a three-in-one online testing device for keyboard key characters, ribbon cable, and stabilizer bar," which can simultaneously test keyboard key characters, ribbon cable, and stabilizer bar. However, this technical solution also has the following shortcomings:

[0004] First, the cameras used to detect key characters and ribbon cables are all installed together. For different models of laptop keyboards, the position of the ribbon cable relative to the keyboard will change. Therefore, when testing different models of keyboard products, the camera for the ribbon cable needs to be adjusted, which is troublesome.

[0005] Secondly, due to the characteristics of its material, the ribbon cable is difficult to keep flat. Therefore, when the camera takes pictures using the above method, the curvature of the ribbon cable itself will cause errors in the photos taken, making it difficult to accurately identify the contacts of the ribbon cable.

[0006] Furthermore, with the continuous development of AI capabilities, the recognition efficiency of existing visual inspection systems has greatly improved, making existing floor-standing keyboard key visual inspection devices inadequate. To address these issues, the inventors propose the following technical solution. Summary of the Invention

[0007] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a floor-standing keyboard key visual inspection device.

[0008] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a floor-standing keyboard key visual inspection device, comprising: a machine base and a keyboard fixture, a visual inspection module, a first light source module, a second light source module, and an auxiliary pressure plate module disposed within the machine base. The machine base includes a fixed frame, and the keyboard fixture, the first light source module, the visual inspection module, and the second light source module are distributed from bottom to top and installed on the fixed frame. The keyboard fixture includes: a keyboard positioning template for positioning the keyboard body and a cable detection template located beside the keyboard positioning template. The visual inspection unit includes a camera suspended above the keyboard fixture. The first light source module is arranged around the keyboard fixture. The second light source module is located above the first visual inspection unit. The auxiliary pressure plate module is located beside the cable detection template in the keyboard fixture, and the auxiliary pressure plate module has a liftable transparent pressure plate.

[0009] Furthermore, in the above technical solution, the machine tool includes a machine base, the fixed frame is installed above the machine base, and a housing is provided outside the fixed frame. The housing is provided with an openable operating door, and a grating assembly is provided on the fixed frame at the position corresponding to the operating door.

[0010] Furthermore, in the above technical solution, the bottom of the fixed frame is provided with a base plate; the first light source module includes: a light source column fixed on the base plate, a light source seat installed between the two light source columns, and a strip light source pivotally connected to the light source seat in the horizontal direction, and the illumination angle of the first light source module is adjusted by changing the pivoting position between the strip light source and the light source seat.

[0011] Furthermore, in the above technical solution, the first light source module is provided in four groups, which are located on the front, back, left and right sides of the base plate respectively.

[0012] Furthermore, in the above technical solution, the bottom of the fixed frame is provided with a base plate, and an array of first positioning holes are provided on the base plate; the keyboard positioning template includes a positioning plate and a positioning block, the positioning plate is provided with an array of second positioning holes, the positioning block is positioned on the positioning plate through the second positioning holes, and surrounds a groove to position the keyboard body.

[0013] Furthermore, in the above technical solution, the cable detection template includes: a transparent panel and a backlight source disposed below the transparent panel, so that the transparent panel forms a light-emitting area through the backlight source.

[0014] Furthermore, in the above technical solution, the bottom of the fixed frame is provided with a base plate; the auxiliary pressure plate module includes: a pressure plate seat fixed on the base plate, a horizontal cylinder installed on the pressure plate seat, a vertical cylinder installed on the piston rod of the horizontal cylinder, and a transparent pressure plate fixed on the piston rod of the vertical cylinder. The transparent pressure plate is driven by the horizontal cylinder and the vertical cylinder to press the keyboard cable located on the cable detection template.

[0015] Furthermore, in the above technical solution, the second light source module includes a top surface light source located above the first visual detection unit.

[0016] Furthermore, in the above technical solution, the visual detection unit includes at least two cameras, and the cameras are adjustablely mounted on a camera beam arranged in a horizontal direction.

[0017] Furthermore, in the above technical solution, a top frame is installed above the fixed frame; the top surface light source in the second light source module is adjustablely mounted on the top frame in the horizontal direction via a light source connecting plate; and the camera beam is set on the top frame.

[0018] By adopting the above technical solution, this utility model has the following advantages:

[0019] Firstly, this invention can not only detect characters on the keyboard using a visual inspection unit, but also simultaneously inspect the keyboard's ribbon cable using an auxiliary pressure plate module. The transparent pressure plate in the auxiliary pressure plate module flattens the keyboard ribbon cable, and the cable inspection template in the keyboard fixture has a backlight, further improving the clarity of the keyboard ribbon cable photograph, effectively reducing errors and improving inspection accuracy.

[0020] Secondly, this utility model is equipped with a first light source module and a second light source module located at different heights, which provide sufficient light source illumination for taking pictures of the keyboard and ensure the clarity of the pictures.

[0021] Finally, the entire testing equipment of this invention adopts a floor-standing design, which can not only operate independently, but also be directly integrated into existing keyboard production lines. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present invention;

[0023] Figure 2 This is a perspective view of the fixed frame portion of this utility model;

[0024] Figure 3 yes Figure 2 A stereoscopic view from another perspective;

[0025] Figure 4This is a perspective view of the present invention after the fixed frame portion has been removed;

[0026] Figure 5 This is a right view of the base plate, keyboard fixture, first light source module, and auxiliary pressure plate module of this utility model;

[0027] Figure 6 This is a perspective view of the base plate and keyboard fixture in this utility model. Detailed Implementation

[0028] This utility model is a floor-standing keyboard key visual inspection device, see Figures 1 to 6 As shown, the testing mechanism includes: a machine base 1, a keyboard fixture 2, a vision inspection module 3, a first light source module 4, a second light source module 5, and an auxiliary pressure plate module 6.

[0029] Combination Figure 1 As shown, the machine tool 1 includes a fixed frame 10 and a machine base 11. The fixed frame 10 is mounted above the machine base 11, and a housing 12 is provided outside the fixed frame 10. The housing 12 is equipped with an openable operating door 13, a display screen, operating buttons, etc. To ensure operational safety, a grating assembly 7 is provided on the fixed frame 10 corresponding to the position of the operating door 13. The grating assembly 7 uses an infrared grating transmitter and receiver. During operation, the grating assembly 7 is activated. If the user accidentally triggers the grating assembly 7, the invention immediately stops working.

[0030] Combination Figure 2 , Figure 3 As shown, the keyboard fixture 2, the first light source module 4, the vision inspection module 3, and the second light source module 5 are distributed from bottom to top and mounted on the fixed frame 10. Specifically, a base plate 14 is provided at the bottom of the fixed frame 10, and the keyboard fixture 2, the first light source module 4, and the auxiliary pressure plate module 6 are mounted on the base plate 14. A top frame 15 is mounted on top of the fixed frame 10, and the top frame 15 is used to mount the vision inspection module 3 and the second light source module 5.

[0031] This invention includes four sets of first light source modules 4, located on the front, rear, left, and right sides of the base plate 14. That is, the four sets of first light source modules 4 are arranged around the keyboard fixture 2, providing a surrounding light source for photographing the keyboard fixture 2. Specifically, each set of first light source modules 4 includes: a light source column 41 fixed to the base plate 14, a light source base 42 installed between two light source columns 41, and a strip light source 40 pivotally connected to the light source base 42 in a horizontal direction. The illumination angle of the first light source module 4 can be adjusted by changing the pivoting position between the strip light source 40 and the light source base 42.

[0032] Combination Figure 5As shown, for easy adjustment, an angle dial is provided on the end face of the light source base 42, and an angle pointer is provided on the end of the strip light source 40. The illumination angle of the strip light source 40 can be precisely adjusted by using the angle pointer and the angle dial. In addition, each light source column 41 is also provided with a height scale, so the height of the light source base 42 can be adjusted as needed.

[0033] Combination Figure 4 As shown, the visual detection unit 3 includes at least two cameras 31, and the cameras 31 are adjustablely mounted on a camera beam 32 arranged in a horizontal direction. Similarly, the camera beam 32 is provided with a horizontal distance scale, allowing the horizontal position of the cameras 31 to be adjusted as needed. Likewise, the camera beam 32 can also be adjusted in a forward or backward orientation as needed.

[0034] The second light source module 5 includes a top surface light source 50 located above the first visual detection unit 3 and a light source connecting plate 51. The top surface light source 50 is an LED light-emitting panel. The top surface light source 50 in the second light source module 5 is horizontally adjustable and mounted on the top frame 15 via the light source connecting plate 51.

[0035] Combination Figure 6 As shown, the base plate 14 has arrayed first positioning holes 140, and the keyboard fixture 2 and the auxiliary pressure plate module 6 are positioned by pin holes with the positioning holes in different areas.

[0036] The keyboard fixture 2 includes: a keyboard positioning template 21 for positioning the keyboard body 91 and a cable detection template 22 located next to the keyboard positioning template 21.

[0037] The keyboard positioning template 21 includes a positioning plate 211 and a positioning block 212. The positioning plate 211 has an array of second positioning holes 210. The positioning block 212 is positioned on the positioning plate 211 through the second positioning holes 210 and surrounds a groove to position the keyboard body 91.

[0038] The cable detection template 22 includes a transparent panel 221 and a backlight 222 disposed below the transparent panel 221, which causes the transparent panel 221 to form a light-emitting area. The cable detection template 22 is used to place the keyboard ribbon cable 92. After the keyboard body 91 is positioned on the keyboard positioning template 21, the keyboard ribbon cable 92 is located on the cable detection template 22. At this time, the camera 31 in the vision detection unit 3 takes a picture of the keyboard ribbon cable 92 and performs image detection.

[0039] The cable inspection template 22 is equipped with a backlight 232. This template uses a planar light source as its backlight; when the camera 31 takes a picture of the keyboard cable 92, the backlight makes the image clearer. The backlight 232 can be an LED panel.

[0040] The auxiliary pressure plate module 6 includes: a pressure plate seat 62 fixed on the base plate 14, a horizontal cylinder 63 mounted on the pressure plate seat 62, and a vertical cylinder 64 mounted on the piston rod of the horizontal cylinder 63. A transparent pressure plate 61 is fixed on the piston rod of the vertical cylinder 64. The transparent pressure plate 61 is driven by the horizontal cylinder 63 and the vertical cylinder 64 to press the keyboard ribbon cable 92 located on the cable detection template 22.

[0041] The transparent pressure plate 61 is used in this invention because the keyboard ribbon cable 92, due to the properties of its material, tends to warp. When the camera 31 takes a picture, this can lead to errors in the captured image, making it impossible to accurately identify the contacts on the keyboard ribbon cable 92. This invention uses the transparent pressure plate 61 to flatten the keyboard ribbon cable 92 before the camera 31 takes the picture. At the same time, the transparent pressure plate 61 does not affect the clarity of the captured image.

[0042] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A floor standing keyboard key visual inspection apparatus comprising: The machine tool (1) and the keyboard fixture (2), vision inspection module (3), first light source module (4), second light source module (5) and auxiliary pressure plate module (6) installed in the machine tool are characterized in that: The machine (1) includes a fixed frame (10), and the keyboard fixture (2), the first light source module (4), the vision inspection module (3), and the second light source module (5) are distributed from bottom to top and installed on the fixed frame (10); The keyboard fixture (2) includes: a keyboard positioning template (21) for positioning the keyboard body (91) and a cable detection template (22) located next to the keyboard positioning template (21). The visual detection unit (3) includes a camera (31) suspended above the keyboard fixture (2); The first light source module (4) is arranged around the keyboard fixture (2); The second light source module (5) is located above the first visual detection unit (3); The auxiliary pressure plate module (6) is located next to the cable detection template (22) in the keyboard fixture (2), and the auxiliary pressure plate module (6) has a liftable transparent pressure plate (61).

2. The visual inspection apparatus for keys of a floor keyboard according to claim 1, wherein: The machine (1) includes a machine base (11), the fixed frame (10) is installed above the machine base (11), and a housing (12) is provided outside the fixed frame (10). An openable operating door (13) is provided on the housing (12), and a grating assembly (7) is provided on the fixed frame (10) corresponding to the position of the operating door (13).

3. The visual inspection apparatus for a key of a floor keyboard according to claim 1, wherein: The fixed frame (10) is provided with a base plate (14) at the bottom. The first light source module (4) includes: a light source column (41) fixed on the base plate (14), a light source base (42) installed between the two light source columns (41), and a strip light source (40) pivotally connected to the light source base (42) in the horizontal direction. The illumination angle of the first light source module (4) can be adjusted by changing the pivot orientation between the strip light source (40) and the light source base (42).

4. The visual inspection apparatus for keys of a floor keyboard according to claim 3, wherein: The first light source module (4) is provided in four groups, which are located on the front, back, left and right sides of the base plate (14).

5. The visual inspection apparatus for a key of a floor keyboard according to claim 1, wherein: The fixed frame (10) is provided with a base plate (14) at the bottom, and the base plate (14) is provided with arrayed first positioning holes (140). The keyboard positioning template (21) includes a positioning plate (211) and a positioning block (212). The positioning plate (211) has an array of second positioning holes (210). The positioning block (212) is positioned on the positioning plate (211) through the second positioning holes (210) and surrounds a groove to position the keyboard body (91).

6. The visual inspection apparatus for keys of a floor keyboard according to any one of claims 1 to 5, wherein: The cable testing template (22) includes a transparent panel (221) and a backlight (222) disposed below the transparent panel (221), through which the transparent panel (221) forms a light-emitting area.

7. The visual inspection apparatus for keys of a floor keyboard according to any one of claims 1 to 5, wherein: The fixed frame (10) is provided with a base plate (14) at the bottom; the auxiliary pressure plate module (6) includes: a pressure plate seat (62) fixed on the base plate (14), a horizontal cylinder (63) installed on the pressure plate seat (62), and a vertical cylinder (64) installed on the piston rod of the horizontal cylinder (63). The transparent pressure plate (61) is fixed on the piston rod of the vertical cylinder (64). The transparent pressure plate (61) is driven by the horizontal cylinder (63) and the vertical cylinder (64) to press the keyboard cable (92) located on the cable detection template (22).

8. The visual inspection apparatus for keys of a floor keyboard according to any one of claims 1 to 5, wherein: The second light source module (5) includes a top surface light source (50) located above the first visual detection unit (3).

9. A visual detection device for a floor keyboard key according to claim 8, characterized in that: The visual detection unit (3) includes at least two cameras (31), and the cameras (31) are adjustablely mounted on a camera beam (32) arranged in a horizontal direction.

10. A visual detection device for a floor keyboard key according to claim 9, characterized in that: A top frame (15) is installed above the fixed frame (10); The top surface light source (50) in the second light source module (5) is horizontally adjustable and mounted on the top frame (15) via the light source connecting plate (51); The camera beam (32) is mounted on the top frame (15).