Ceiling screen surface difference detection device
By using a laser rangefinder and control system to automatically compare the detection data in the ceiling screen surface difference detection device, the problems of slow speed and low accuracy of manual detection are solved, and fast and accurate surface difference detection is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-03-10
AI Technical Summary
In existing technologies, the detection of surface differences of ceiling screens relies on manual inspection, which is slow and inaccurate, prone to subjective judgment errors, and different product sizes require different inspection tools, resulting in inconsistent judgment standards.
A ceiling-mounted screen surface difference detection device, including a measuring platform, product carrier, distance measuring components and control system, is used to detect the distance between the back shell and decorative shell of the product under test by a laser rangefinder and compare it with the pre-stored model data to automatically determine the surface difference.
It enables rapid and accurate surface difference detection, reduces human error, and improves detection efficiency and accuracy.
Smart Images
Figure CN223985688U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of surface difference detection technology, and in particular to a surface difference detection device for ceiling screens. Background Technology
[0002] With the continuous development of new energy vehicles, in order to improve the entertainment and comfort of rear passengers, large rear ceiling screens have become a basic configuration. However, as the display screens continue to grow larger, the cumulative manufacturing tolerances also increase, inevitably leading to surface differences when the screen is closed. This results in protrusions between the screen and the trim panel, affecting the aesthetics of the entire car interior. Therefore, it is essential to conduct surface difference testing on ceiling screen components before they leave the factory.
[0003] Current technology involves manual inspection using measuring tools or visual inspection for protrusions. This method is relatively slow, and improper use of measuring tools can lead to subjective judgment errors. Furthermore, different product sizes require different measuring tools, which can easily result in the use of the wrong tool and thus incorrect judgments. Visual inspection is entirely based on subjective judgment, and each person's judgment is different, making the judgment standards extremely inaccurate. Utility Model Content
[0004] The purpose of this invention is to provide a ceiling screen surface difference detection device that has a fast detection speed and high accuracy.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] A ceiling-mounted screen surface difference detection device, comprising:
[0007] A measuring table, comprising a base, a support, and a measuring platform, wherein the bottom of the support is connected to the base, the top of the support supports the measuring platform, and the measuring platform is provided with a measuring groove;
[0008] Product carrier, the product carrier is installed on the measurement platform, and the product to be tested is clamped in the product carrier;
[0009] A ranging component, comprising a laser rangefinder mounted on the base, the laser rangefinder being configured to detect the distance to the back shell of the product under test and the distance to the decorative shell of the product under test, as measurement data;
[0010] The control system includes a laser rangefinder connected to it, which is used to pre-store the back shell thickness values of different models of products to be tested. The control system is configured to receive and process the measurement data from the laser rangefinder and compare it with the back shell thickness value of the corresponding model of the product to be tested.
[0011] Preferably, the ceiling-mounted screen surface difference detection device further includes a driving component, which is configured to drive the laser rangefinder to move along a first direction to detect the distance between the laser rangefinder and the back shell of the product under test, wherein the first direction is the width direction of the product under test.
[0012] Preferably, the ceiling-mounted screen surface difference detection device further includes a ranging platform, which is mounted on the base, and the laser rangefinder is connected to the top of the ranging platform. The driving component is configured to drive the ranging platform to slide along the first direction.
[0013] Preferably, a plurality of laser rangefinders are provided, and the plurality of laser rangefinders are spaced apart on the top of the ranging platform along a second direction, the second direction being perpendicular to the first direction.
[0014] Preferably, the driving assembly includes a slide rail, a slider, and a driving component. The slide rail is disposed on the top of the base along the first direction, the slider is slidably connected to the slide rail, the ranging platform is connected to the slider, and the driving component is configured to drive the slider to slide along the first direction.
[0015] Preferably, the driving component is a linear motor or a cylinder.
[0016] Preferably, the ceiling screen surface difference detection device further includes a level, which is disposed on the base and configured to detect the tilt angle of the base relative to a horizontal position.
[0017] Preferably, the ceiling screen surface difference detection device further includes clamping members, and four clamping members are arranged in a matrix on the measuring platform. The clamping members are configured to press down against the front shell of the product to be tested, or to lift up and release the product to be tested.
[0018] Preferably, the ceiling screen surface difference detection device further includes a scanning gun, which is mounted on the measurement platform, connected to the control system, and configured to detect the model of the product to be tested.
[0019] Preferably, the ceiling screen surface difference detection device further includes four feet, which are installed in a matrix at the bottom of the base.
[0020] The beneficial effects of this utility model are:
[0021] This utility model provides a ceiling screen surface difference detection device, including a measuring platform, a product carrier, a distance measuring component, and a control system. The measuring platform includes a base, a support, and a measuring platform. The bottom of the support is connected to the base, and the top of the support supports the measuring platform. The measuring platform has a measuring groove. The product carrier is installed on the measuring platform, and the product to be tested is held in the product carrier. The distance measuring component includes a laser rangefinder, which is installed on the base. The laser rangefinder is configured to detect the distance to the back shell of the product to be tested and the distance to the decorative shell of the product to be tested, as measurement data. The laser rangefinder is connected to the control system. It is used to pre-store the back shell thickness values of different models of products under test. The distance measuring component measures the distance to the back shell of the product under test and the distance to the decorative shell of the product under test, and transmits the measurement data to the control system. The control system processes the measurement data and compares the final data with the back shell thickness value of the corresponding model of the product under test. If the difference is within the set range, it means that there is no surface difference when the product under test is closed, and the product under test passes the test. If the data difference exceeds the set range, it means that there is a surface difference when the product under test is closed, and the product under test fails the test. The surface difference detection is fast and accurate. Attached Figure Description
[0022] Figure 1 This is a structural schematic diagram (perspective from one side of the base) of a ceiling screen surface difference detection device provided in an embodiment of this utility model;
[0023] Figure 2 yes Figure 1 Enlarged view of point A in the middle;
[0024] Figure 3 This is a side view (perspective from one side of the base) of a ceiling screen surface difference detection device provided in an embodiment of this utility model;
[0025] Figure 4 This is a top view of a ceiling screen surface difference detection device provided in an embodiment of this utility model.
[0026] In the picture:
[0027] 11. Base; 111. Foot; 12. Bracket; 13. Measuring platform; 131. Measuring groove; 2. Level; 3. L-block; 4. Clamping component; 51. Laser rangefinder; 52. Measuring platform; 61. Slide rail; 62. Slider; 63. Drive component; 7. Distance calibration plate. Detailed Implementation
[0028] 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 present 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, not the entire structure.
[0029] In the description of this utility model, 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 utility model based on the specific circumstances.
[0030] 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.
[0031] 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 this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0032] This embodiment provides a surface difference detection device for ceiling-mounted screens, which has fast detection speed and high accuracy.
[0033] Please see Figures 1-4 A ceiling-mounted screen surface difference detection device includes a measuring platform, a product carrier, a distance measuring component, and a control system. The product carrier, distance measuring component, and control system are all installed on the measuring platform. The product to be tested is held in the product carrier, and the distance measuring component is connected to the control system. When put into use, the back shell thickness values of different models of the product to be tested are pre-stored in the control system. The distance measuring component measures the distance to the back shell of the product to be tested and the distance to the decorative shell of the product to be tested, and transmits the measurement data to the control system. The control system processes the measurement data and compares the final data with the back shell thickness value of the corresponding model of the product to be tested. If the difference is within a set range, it means that there is no surface difference when the product to be tested is closed, and the product to be tested passes the test. If the data difference exceeds the set range, it means that there is a surface difference when the product to be tested is closed, and the product to be tested fails the test.
[0034] It should be noted that the product under test is a ceiling-mounted screen in its closed state. The ceiling-mounted screen includes a screen surface, a decorative shell, and a back shell. The screen surface is embedded in the decorative shell and is flush with it. In the folded and closed state, the screen surface and the decorative shell are attached to one side of the back shell, and part of the decorative shell extends outward. For ceiling-mounted screens without surface differences, in the closed state, the screen surface and the decorative shell are flatly attached to one side of the back shell. The distance between the back shell and the decorative shell is the thickness of the back shell. Therefore, this embodiment further obtains the distance between the back shell and the decorative shell of the product under test by detecting the distances to the back shell and the decorative shell of the product under test. By comparing the thickness value of the back shell of the corresponding model, it can be determined whether the product under test is qualified.
[0035] Specifically, please refer to Figure 1 The measuring table includes a base 11, a bracket 12 and a measuring platform 13. The bottom of the bracket 12 is connected to the base 11, and the top of the bracket 12 is connected to the measuring platform 13 to support the measuring platform 13.
[0036] Optionally, the base 11 has a reserved power interface for powering the various components. In addition, a cooling fan can be installed on the base 11 to cool it down.
[0037] Further, please refer to Figure 1 and Figure 3 A level 2 is installed on the base 11. The level 2 is used to measure the tilt angle of the base 11 relative to the horizontal position to ensure the accuracy of the test results.
[0038] Furthermore, four feet 111 are installed at the bottom of the base 11, arranged in a matrix. Preferably, the feet 111 are adjustable feet, used in conjunction with the level 2. By adjusting the height of the adjustable feet 111, the tilt angle of the measuring platform 13 relative to the horizontal position can be adjusted, ensuring the levelness of the measuring platform 13 and improving the reliability of the test results.
[0039] Optionally, the measurement platform 13 is also equipped with a barcode scanner (not shown in the figure). The barcode scanner is connected to the control system. By scanning the QR code of the product under test, the barcode scanner directly detects the model of the product under test and transmits the data to the control system. The control system then compares the measurement data with the thickness value of the back shell of the corresponding model of the product under test to determine whether the product under test is qualified. The barcode scanner has a certain detection accuracy and is easy to operate and inexpensive.
[0040] Further, please refer to Figure 4The measuring platform 13 is provided with a measuring slot 131 so that the distance measuring component can detect the distance to the back shell of the product under test and the distance to the decorative shell of the product under test through the measuring slot 131. Preferably, the measuring slot 131 is rectangular to adapt to the shape of the ceiling screen. More preferably, the product carrier is circumferentially arranged outside the measuring slot 131, and the size of the measuring slot 131 is smaller than the size of the product under test, so as to ensure that at least the projection of the product under test passes through the measuring slot 131. It should be noted that the projection of the boundary line between the decorative shell and the back shell of the product under test in the closed state passes through the measuring slot 131 to ensure that the distance measuring component can detect the distance to the back shell of the product under test and the distance to the decorative shell of the product under test.
[0041] For example, please refer to Figure 3 and Figure 4 The product carrier includes four L-shaped blocks 3, which are circumferentially spaced on the outside of the measuring groove 131. The four L-shaped blocks 3 are connected to form a rectangle that fits the product to be tested. The corners of the L-shaped blocks 3 extend inward. The four corners of the product to be tested are respectively placed at the corners of the four L-shaped blocks 3. The back shell of the product to be tested is closer to the base 11 than the decorative shell, so as to ensure that the boundary line between the decorative shell and the back shell is directly opposite the measuring component below when closed, which is convenient for testing.
[0042] Preferably, please refer to Figure 1 , Figure 3 and Figure 4 The measuring platform 13 is also equipped with clamping members 4. In this embodiment, four clamping members 4 are provided, arranged in a matrix on the top of the measuring platform 13. The measuring groove 131 is located in the area formed by the four clamping members 4. The clamping members 4 are configured to press down and clamp the front shell of the product to be tested, ensuring the stability of the position of the product to be tested during the testing process. Alternatively, after the surface difference test of one product to be tested is completed, the product to be tested is lifted and released, and the next product to be tested is placed in. More preferably, the four clamping members 4 correspond to the four corners of the product to be tested, that is, the four clamping members 4 are respectively located close to the four L-shaped blocks 3 on their outer sides to ensure the stability of the position of the product to be tested.
[0043] For example, the abutting end of the clamping member 4 is provided with a buffer layer to reduce structural damage to the product under test when it is pressed down. The buffer layer is made of silicone or other flexible materials.
[0044] Optionally, the clamping element 4 is a clamping pliers commonly used in the prior art, and its specific structure will not be described in detail here.
[0045] Please see Figure 2 and Figure 3The ranging component includes a laser rangefinder 51, which is mounted on the base 11. The laser rangefinder 51 emits a laser from its top emitter. The distance between the laser rangefinder 51 and the back shell of the product under test can be detected by aligning the laser with the back shell of the product under test. The distance between the laser rangefinder 51 and the decorative shell of the product under test can also be detected by aligning the laser with the decorative shell of the product under test. Furthermore, this embodiment also includes a driving component. After the distance between the laser rangefinder 51 and the decorative shell of the product under test is detected, the driving component can drive the laser rangefinder 51 to move along a first direction, which is the width direction of the product under test, so that the laser emitted by the laser rangefinder 51 is aligned with the back shell of the product under test to detect the distance between the laser rangefinder 51 and the back shell of the product under test.
[0046] Specifically, please refer to Figure 2 A ranging platform 52 is installed on the base 11, and a laser rangefinder 51 is connected to the top of the ranging platform 52. The driving component drives the ranging platform 52 to slide in the first direction, thereby driving the laser rangefinder 51 to slide in the first direction.
[0047] Preferably, a plurality of laser rangefinders 51 are provided, and the plurality of laser rangefinders 51 are spaced apart on the top of the measuring platform 52 along a second direction. The second direction is perpendicular to the first direction, that is, the second direction is the length direction of the product to be measured. By spaced apart on the measuring platform 52, multiple points of the back shell and decorative shell of the product to be measured can be detected simultaneously, and the average value of the data can be obtained to improve the accuracy of the detection.
[0048] By setting up the ranging platform 52, the synchronous movement of several laser rangefinders 51 can be achieved by driving the ranging platform 52, and the sliding stability of the ranging platform 52 can be guaranteed to ensure the sliding stability of several laser rangefinders 51, thereby further improving the reliability of the detection results.
[0049] Further, please refer to Figure 2 The driving assembly includes a slide rail 61, a slider 62, and a driving component 63. The slide rail 61 is disposed on the top of the base 11 along a first direction. The slider 62 is slidably connected to the slide rail 61. The ranging platform 52 is connected to the slider 62. The driving component 63 is configured to drive the slider 62 to slide along the first direction. By setting the slide rail 61 and slider 62 structure, the sliding stability of the slider 62 is ensured, thereby ensuring the sliding stability of the ranging platform 52 and the plurality of laser rangefinders 51.
[0050] Preferably, at least two slide rails 61 are spaced apart on the top of the base 11 along the second direction, each slide rail 61 is arranged along the first direction, and each slide rail 61 is equipped with a slider 62 slidably connected to it. At least two sliders 62 are connected to the bottom of the ranging platform 52, which further improves the sliding stability of the ranging platform 52 and several laser rangefinders 51.
[0051] For example, the drive unit 63 may be a linear motor or a cylinder, etc., without specific limitations. When the drive unit 63 is a cylinder, the base 11 is provided with a compressed air interface, which is connected to the cylinder air inlet.
[0052] Furthermore, before using the ceiling-mounted screen surface difference detection device provided in this embodiment, the laser rangefinder 51 needs to be calibrated. This ensures that the detection distance is within the usable range of the laser rangefinder and that the laser rangefinder 51 can directly detect the distance to the decorative shell of the product under test during detection. Therefore, before use, a distance calibration plate 7 is placed on the product carrier, and the laser rangefinder 51 is controlled to emit a laser to calibrate it. After calibration, the distance calibration plate 7 is removed.
[0053] In this embodiment, the ceiling-mounted screen surface difference detection device is used as follows: First, the product to be tested is placed on the product carrier. The clamping member 4 is moved so that its abutting end presses down to firmly press against the front shell of the product to be tested. Then, the control system controls the scanning gun to scan the QR code of the product to be tested to detect the model of the product to be tested and transmits it to the control system. Further, the control system controls the laser rangefinder 51 to emit a laser to detect the distance between it and the decorative shell of the product to be tested and records it. Further still, the control system controls the driving member 63 to drive the laser rangefinder 51 to slide along the first direction so that the laser emitted by the laser rangefinder 51 is aligned with the rear shell of the product to be tested. The laser rangefinder 51 emits a laser to detect and record the distance between itself and the decorative shell of the product under test. After recording, the control system processes the measurement data and compares the final data with the thickness value of the back shell of the corresponding model of the product under test. If the data difference is within the set range, it means that there is no surface difference when the product under test is closed, and the product under test passes the test. If the data difference exceeds the set range, it means that there is a surface difference when the product under test is closed, and the product under test fails the test. After the test, the clamping part 4 is moved to loosen its abutting end and press against the front shell of the product under test, and the product under test is taken out, thus completing the surface difference detection.
[0054] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. 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 this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A ceiling screen difference detection device, characterized by, The application relates to a ceiling-mounted screen surface difference detection device. The device comprises a measuring table, a product carrier and a distance measuring assembly. The measuring table comprises a base (11), a support (12) and a measuring platform (13), the bottom of the support (12) is connected to the base (11), the top of the support (12) supports the measuring platform (13), and the measuring platform (13) is provided with a measuring groove (131). The product carrier is installed on the measuring platform (13), and a product to be measured is clamped on the product carrier. The distance measuring assembly comprises a laser distance meter (51), the laser distance meter (51) is installed on the base (11), and the laser distance meter (51) is configured to detect the distance from the rear shell of the product to be measured and the distance from the decorative shell of the product to be measured as measurement data.
2. The ceiling screen difference detecting device according to claim 1, wherein The laser distance meter (51) is connected to a control system, the control system is configured to prestore the thickness values of the rear shells of different models of products to be measured, receive the measurement data of the laser distance meter (51) and process the data, and compare the data with the thickness values of the rear shells of the corresponding models of the products to be measured.
3. The ceiling screen difference detecting device according to claim 2, wherein The device further comprises a driving assembly, the driving assembly is configured to drive the laser distance meter (51) to move in a first direction to detect the distance from the laser distance meter (51) to the rear shell of the product to be measured, and the first direction is the width direction of the product to be measured.
4. The ceiling screen difference detecting device according to claim 3, wherein The device further comprises a distance measuring platform (52), the distance measuring platform (52) is installed on the base (11), the laser distance meter (51) is connected to the top of the distance measuring platform (52), and the driving assembly is configured to drive the distance measuring platform (52) to slide in the first direction.
5. The ceiling screen difference detecting device according to claim 3, wherein The laser distance meter (51) is provided with a plurality of laser distance meters (51), and the plurality of laser distance meters (51) are arranged on the top of the distance measuring platform (52) in a second direction, and the second direction is perpendicular to the first direction.
6. A ceiling screen difference detecting device according to claim 5, wherein The driving assembly comprises a sliding rail (61), a sliding block (62) and a driving member (63), the sliding rail (61) is arranged on the top of the base (11) in the first direction, the sliding block (62) is slidably connected to the sliding rail (61), the distance measuring platform (52) is connected to the sliding block (62), and the driving member (63) is configured to drive the sliding block (62) to slide in the first direction.
7. A ceiling panel difference detecting device according to any one of claims 1-6, characterized in that The driving member (63) is a linear motor or a pneumatic cylinder.
8. A ceiling screen difference detecting device according to any one of claims 1 to 6, characterized in that, The device further comprises a level (2), the level (2) is arranged on the base (11), and the level (2) is configured to detect the inclination angle of the base (11) relative to the horizontal position. The device further comprises four clamping members (4), the four clamping members (4) are arranged in a matrix on the measuring platform (13), and the clamping members (4) are configured to press down to tightly clamp the front shell of the product to be measured or to lift up to loosen the product to be measured.
9. A ceiling panel difference detecting device according to any one of claims 1-6, characterized in that The ceiling-mounted screen surface difference detection device further comprises a scanning gun, the scanning gun is installed on the measuring platform (13), the scanning gun is connected to the control system, and the scanning gun is configured to detect the model of the product to be measured.
10. A ceiling screen difference detecting device according to any one of claims 1 to 6, characterized in that, The ceiling-mounted screen surface difference detection device further comprises four bottom feet (111), and the four bottom feet (111) are installed in a matrix mode at the bottom of the base (11).