Head-up display screen surface type detection device

Abstract

The utility model belongs to the technical field of head-up displays, and relates to a head-up display screen surface type detection device. A profiling jig (2) is arranged on the device base (1), a flannelette layer (4) is arranged on a profiling surface (3) of the upper surface of the profiling jig (2), a plurality of positioning pins (5) are further arranged on the device base (1), and the height of the positioning pins (5) is larger than that of the profiling jig (2). A plurality of positioning pins (5) are arranged on the front portion of the profiling jig (2) at intervals, and a plurality of positioning pins (5) are arranged on the side portion of one side of the profiling jig (2) at intervals. The head-up display screen surface type detection device can be conveniently and reliably used for placing a head-up display screen needing to be detected, the surface of a product is effectively prevented from being scratched, the characteristic that the flannelette layer is not reflective can ensure that an optical surface scanning device is not influenced by reflection of a jig during measurement, and the accuracy of a measurement result is improved.

Description

Technical Field

[0001] This utility model belongs to the field of head-up display technology, and more specifically, it relates to a head-up display screen shape detection device. Background Technology

[0002] With the rapid development of automotive intelligence, head-up displays (HUDs) have become standard equipment in high-end models due to their ability to project driving information into the driver's field of vision, significantly improving driving safety. The screen of the core optical element of a HUD is typically a complex curved surface structure, and its surface accuracy (such as curvature and reflection angle) directly affects image quality and user experience. Therefore, high-precision inspection of the HUD surface is necessary during production to ensure it meets design standards. Currently, HUD surface inspection mainly relies on equipment such as freeform surface scanners. However, these methods require the product to be fixed in place to ensure measurement accuracy. Traditional contouring fixtures have problems such as causing scratches on the product surface and fixture reflections affecting the accuracy of inspection results.

[0003] The prior art includes a technology entitled "Automotive Windshield HUD Inspection Device and Method" with publication (announcement) number "CN111609815A". This technology discloses an automotive windshield HUD inspection device and method, including a frame, a reference panel, a glass base angle adjustment mechanism, a replaceable glass base, a light source rotation mechanism, a camera mechanism bracket, an industrial camera rotation mechanism, a customized cabinet, adjustable feet, and a display screen. The top of the frame is fixedly installed to the bottom of the reference panel. This invention has the following beneficial effects: by setting the reference panel and the industrial camera, the positioning of the glass and the camera is more accurate; the detection of various values ​​of the glass by the reference panel is more accurate; by setting a micrometer, the installation position of the camera and the light source is more accurate, greatly reducing the inaccuracy of the camera's positioning and the inaccuracy of the industrial camera's gripping position, thus improving the accuracy of the inspection device; by setting the glass base angle adjustment mechanism, the glass can be rotated at various angles, allowing for comprehensive detection of the glass values.

[0004] However, this technology does not address the technical issues and solutions of this application. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a head-up display screen surface shape detection device that can be conveniently and reliably used to place the head-up display screen to be tested, effectively prevents scratches on the product surface, and ensures that the non-reflective properties of the velvet layer can ensure that the optical surface scanning equipment is not affected by the reflection of the fixture during measurement, thereby improving the accuracy of the measurement results.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] This utility model is a head-up display screen shape detection device, including a device base, a contour jig on the device base, a velvet layer on the contour surface of the contour jig, and a plurality of positioning pins on the device base, the height of the positioning pins being higher than the height of the contour jig.

[0008] The front part of the contour jig is provided with multiple positioning pins with gaps, and one side of the contour jig is provided with multiple positioning pins with gaps.

[0009] The base of the device is made of acrylic, bakelite, or aluminum alloy.

[0010] The material of the profiling fixture is acrylic, bakelite, or aluminum alloy.

[0011] The locating pins are made of materials including copper, iron, stainless steel, or aluminum alloy.

[0012] The fleece layer material is adhesive-backed nonwoven fabric or adhesive-backed flocked fabric.

[0013] The fabric layer is black and is bonded to the contoured surface with an adhesive layer.

[0014] The head-up display screen includes flat glass, spherical glass, or curved glass, and the contoured surface includes a flat contoured surface, a spherical contoured surface, or a curved contoured surface.

[0015] The device base is provided with multiple positioning holes, and a positioning pin is vertically inserted into each positioning hole. There are multiple sets of positioning pins.

[0016] The aforementioned velvet layer covers the contouring surface of the upper surface of the contouring fixture.

[0017] The working principle and beneficial effects of this utility model are as follows:

[0018] The head-up display screen shape detection device of this utility model includes a base positioned directly below the head-up display screen shape detection equipment. A contouring fixture is fixedly mounted on the base. The upper surface of the contouring fixture is a contouring surface, which can be of different shapes, such as a planar, spherical, or curved surface, to match different screen shapes. The head-up display screen can be flat, spherical, or curved glass. The contouring surface matching the corresponding glass shape reliably supports the glass. The addition of a velvet layer effectively prevents scratches and abrasions on the product. Furthermore, the use of black velvet, with its non-reflective properties, ensures that the optical scanning equipment is not affected by fixture reflections during detection, effectively improving the accuracy of the detection results. Attached Figure Description

[0019] The following is a brief explanation of the contents depicted in the accompanying drawings and the markings therein:

[0020] Figure 1 This is a schematic diagram of the front cross-sectional structure of the head-up display screen surface shape detection device of this utility model;

[0021] Figure 2 This is a top view of the head-up display screen surface shape detection device of this utility model;

[0022] The labels in the attached diagram are as follows: 1. Device base; 2. Contouring fixture; 3. Contouring surface; 4. Flannel layer; 5. Positioning pin; 6. Positioning hole. Detailed Implementation

[0023] The following description, with reference to the accompanying drawings, provides a more detailed explanation of the specific embodiments of this utility model, including the shape and structure of each component, the relative positions and connections between the parts, the functions and working principles of each part:

[0024] As attached Figure 1 Appendix Figure 2 As shown, this utility model is a head-up display (HUD) screen shape detection device, including a base 1, a contour jig 2 mounted on the base 1, a fabric layer 4 on the contour surface 3 of the upper surface of the contour jig 2, and multiple positioning pins 5 on the base 1, the height of the positioning pins 5 being higher than the height of the contour jig 2. This structure addresses the shortcomings of existing technologies by proposing an improved technical solution. In this structural configuration, the base 1 is positioned directly below the HUD screen shape detection device. The contour jig 2 is fixedly mounted on the base 1, and its upper surface is the contour surface 3. The contour surface 3 can be of different shapes, such as a planar, spherical, or curved contour surface, to match different screen shapes. The HUD screen can be flat glass, spherical glass, or curved glass. Different contour surfaces 3 match the corresponding glass shapes, reliably supporting the glass. The addition of the velvet layer 4 effectively prevents scratches and abrasions on the product. Furthermore, the black velvet layer, with its non-reflective properties, ensures that the optical surface scanning equipment is unaffected by fixture reflections during inspection, thus significantly improving the accuracy of the test results. The head-up display screen surface shape detection device described in this invention can be conveniently and reliably used to place the head-up display screen to be inspected, effectively preventing scratches on the product surface. The non-reflective nature of the velvet layer ensures that the optical surface scanning equipment is unaffected by fixture reflections during measurement, thereby improving the accuracy of the measurement results.

[0025] The front of the contour jig 2 is provided with multiple positioning pins 5 at intervals, and another multiple positioning pins 5 are provided on one side of the contour jig 2 at intervals. The device base 1 is provided with multiple positioning holes 6, and a positioning pin 5 is vertically inserted into each positioning hole 6. Multiple sets of positioning pins 5 are included. With the above structure, positioning pins 5 are provided in two directions, which can reliably position the screen to be inspected horizontally. The contour jig provides support below the screen, thus meeting the placement requirements. The positioning holes are used to fix the positioning pins. Since multiple sets of positioning pins 5 are included, when inspecting screens of corresponding surface shapes, it is not necessary to insert a positioning pin into every positioning hole; instead, positioning pins are inserted into the corresponding set of positioning holes to achieve the positioning of the corresponding screen.

[0026] The base 1 of the device is made of acrylic, bakelite, or aluminum alloy. This material ensures the stability of the base 1 and prevents deformation.

[0027] The material of the profiling fixture 2 is acrylic, bakelite, or aluminum alloy. This material ensures the stability of the profiling fixture 2 and prevents it from deforming.

[0028] The locating pin 5 is made of copper, iron, stainless steel, or aluminum alloy. This material selection ensures the locating pin possesses sufficient rigidity to prevent inaccurate product positioning.

[0029] The velvet layer 4 is made of adhesive-backed non-woven fabric or adhesive-backed flocked fabric. The velvet layer 4 is black and is bonded to the contoured surface 3 via an adhesive layer. In this structure, the velvet layer is reliably connected via the adhesive layer, serving both as a flexible support for the screen and providing non-reflective properties.

[0030] The head-up display screen includes flat glass, spherical glass, or curved glass, and the contouring surface 3 includes a flat contouring surface, a spherical contouring surface, or a curved contouring surface. This structure is applicable to the detection of different screens. A velvet layer 4 covers the contouring surface 3 on the upper surface of the contouring fixture 2.

[0031] The head-up display screen surface shape detection device of this utility model includes a base 1 positioned directly below the head-up display screen surface shape detection equipment. A contouring fixture 2 is fixedly mounted on the base 1. The upper surface of the contouring fixture 2 is a contouring surface 3, which can be of different shapes, such as a planar, spherical, or curved contouring surface, to match different screen surface shapes. The head-up display screen can be flat glass, spherical glass, or curved glass. The contouring surfaces 3 of different surface shapes match the corresponding glass surface shapes, reliably supporting the glass. The addition of a velvet layer 4 effectively prevents scratches and abrasions on the product. Furthermore, the use of black velvet, with its non-reflective properties, ensures that the optical scanning equipment is not affected by fixture reflections during detection, effectively improving the accuracy of the detection results.

[0032] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A head-up display screen surface shape detection device, characterized in that: The device includes a base (1), a contour jig (2) is provided on the base (1), a velvet layer (4) is provided on the contour surface (3) on the upper surface of the contour jig (2), and multiple positioning pins (5) are also provided on the base (1), with the height of the positioning pins (5) being higher than the height of the contour jig (2).

2. The head-up display screen surface shape detection device according to claim 1, characterized in that: The front part of the contour jig (2) is provided with multiple positioning pins (5) with gaps, and the side part of the contour jig (2) is provided with multiple positioning pins (5) with gaps.

3. The head-up display screen surface shape detection device according to claim 1 or 2, characterized in that: The base (1) of the device is made of acrylic, bakelite, or aluminum alloy.

4. The head-up display screen surface shape detection device according to claim 1 or 2, characterized in that: The material of the profiling fixture (2) is acrylic, bakelite, or aluminum alloy.

5. The head-up display screen surface shape detection device according to claim 1 or 2, characterized in that: The locating pin (5) is made of copper, iron, stainless steel, or aluminum alloy.

6. The head-up display screen surface shape detection device according to claim 1 or 2, characterized in that: The material of the flocked layer (4) is adhesive-backed nonwoven fabric or adhesive-backed flocked fabric.

7. The head-up display screen surface shape detection device according to claim 6, characterized in that: The fabric layer (4) is black and is bonded to the contoured surface (3) by an adhesive layer.

8. The head-up display screen surface shape detection device according to claim 1 or 2, characterized in that: The head-up display screen includes flat glass, spherical glass, or curved glass, and the contoured surface (3) includes a flat contoured surface, a spherical contoured surface, or a curved contoured surface.

9. The head-up display screen surface shape detection device according to claim 1 or 2, characterized in that: The device base (1) is provided with multiple positioning holes (6), and a positioning pin (5) is vertically inserted into each positioning hole (6). The positioning pins (5) include multiple sets.

10. The head-up display screen surface shape detection device according to claim 1 or 2, characterized in that: The velvet layer (4) covers the contour surface (3) on the upper surface of the contour jig (2).

Images