A device for testing the reflectivity of an automobile rearview mirror

Abstract

The utility model relates to the technical field of automobile detection, specifically relates to a kind of automobile rearview mirror reflectivity testing device.The automobile rearview mirror reflectivity testing device of the application, including rack, optical measuring mechanism, the first support plate is installed on the rack, the first support plate is installed for adjusting the rotating mechanism of the rotating angle of the optical measuring mechanism, the output end of the rotating mechanism is fixed with connecting piece, the driving mechanism for driving the optical measuring mechanism up and down is installed on the connecting piece, the automatic, accurate adjustment of optical measuring mechanism angle and height position is realized.This not only greatly reduces the labor intensity and skill requirement of operator, also avoids the random error caused by manual adjustment, especially suitable for rapid, batch detection on production line.

Description

Technical Field

[0001] This utility model relates to the field of automotive testing technology, specifically to a device for testing the reflectivity of automotive rearview mirrors. Background Technology

[0002] Rearview mirrors are crucial safety components, often referred to as the driver's "other eye." While driving, drivers rely on rearview mirrors to have a comprehensive view of the road conditions behind, to the sides, and below the vehicle. Therefore, the mirror's surface characteristics, shape design, and handling performance are all critical, with mirror reflectivity being particularly important—it directly determines the clarity of the image within the driver's field of vision.

[0003] High-reflectivity rearview mirrors provide clear, sharp images, allowing drivers to easily and accurately understand the situation behind them, thus significantly improving driving safety. Conversely, low-reflectivity rearview mirrors often present blurry images, which can easily lead to driver fatigue and even dizziness, and more seriously affect their ability to judge the situation behind them, posing a safety hazard.

[0004] To ensure the safety of vehicles and pedestrians, the national metrology department has established strict requirements for the reflectivity of rearview mirror reflective surfaces. These requirements are detailed in the national standard GB15084-2013, "Performance and Installation Requirements of Indirect Vision Devices for Motor Vehicles." This standard not only specifies the specific limits for reflectivity but also clarifies the measurement methods. The standard method stipulates the use of a dedicated testing instrument for calibration. This instrument mainly consists of a light source, a sample holder, a receiving unit with a photodetector, and an indicating instrument. Its working principle is as follows: the light emitted by the light source is reflected by the rearview mirror under test and projected onto the photodetector, and finally the reflectivity value is displayed by the indicating instrument.

[0005] However, the instruments used in the current method have obvious shortcomings: the integrating sphere cannot be adjusted according to the placement of the rearview mirror, and the degree of integration and automation is low. Utility Model Content

[0006] The purpose of this invention is to at least solve one of the technical problems existing in the prior art and to provide a device for testing the reflectivity of automotive rearview mirrors.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a car rearview mirror reflectivity testing device, comprising a frame and an optical measuring mechanism, wherein a first support plate is mounted on the frame, and a rotating mechanism for adjusting the rotation angle of the optical measuring mechanism is mounted on the first support plate, and a connecting member is fixedly provided at the output end of the rotating mechanism, and a driving mechanism for driving the optical measuring mechanism to move up and down is mounted on the connecting member.

[0008] Furthermore, the optical measurement mechanism includes an integrating sphere, an integrating sphere clamping block for holding the integrating sphere, and a second support plate fixedly mounted on the integrating sphere clamping block, the second support plate being connected to the driving mechanism.

[0009] Furthermore, the optical measurement mechanism also includes a standard light source, a collimator, and a photodetector. The light emitted by the standard light source is parallelized by the collimator and illuminates the rearview mirror under test. After being reflected by the rearview mirror, the light enters the integrating sphere and is finally received by the photodetector.

[0010] Furthermore, the optical measurement mechanism also includes a reflection analyzer, which is electrically connected to the photoelectric receiver and is used to process photoelectric signals and calculate reflectivity.

[0011] Furthermore, the rotating mechanism includes a drive motor mounted on the first support plate, the output shaft of which is fixedly connected to the connecting member to drive its rotation.

[0012] Furthermore, the connector is a connecting plate, and the driving mechanism includes a cylinder mounted on the connecting plate, with the piston rod of the cylinder extending downward and connected to a push plate.

[0013] Furthermore, the push plate and the second support plate are connected by an elastic buffer assembly; the elastic buffer assembly includes a guide rod and a compression spring sleeved on the guide rod, the lower end of the guide rod is fixedly connected to the second support plate, and the upper end passes through the push plate and the connecting plate in sequence and extends upward.

[0014] Furthermore, the push plate and the connecting plate are provided with corresponding limiting blocks, and the limiting blocks are provided with limiting holes for the guide rod to pass through.

[0015] Furthermore, at least two equal-height screws are symmetrically arranged between the push plate and the connecting plate, and the equal-height screws are used to ensure that the push plate moves parallel to the connecting plate.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial effects: 1. This application features a high degree of automation and ease of operation: Through a rotating mechanism controlled by a drive motor and a lifting mechanism controlled by a cylinder, the angle and height of the optical measuring mechanism are automatically and precisely adjusted. This significantly reduces the labor intensity and skill requirements of operators, and avoids random errors caused by manual adjustment, making it particularly suitable for rapid, batch testing on production lines.

[0017] 2. This application offers high measurement accuracy and reliability: By employing an optical path system that sequentially connects a standard light source, a collimator, an integrating sphere, and a photodetector, a stable parallel light source can be generated and reflected light can be collected efficiently, ensuring the accuracy and consistency of the light signal and laying a solid foundation for high-precision measurement. The reflectance analyzer is directly electrically connected to the photodetector, which can automatically process the light signal and calculate the reflectivity, eliminating human reading errors and improving the objectivity and reliability of the data.

[0018] 3. The device in this application combines precision optical measurement with automated mechanical structure, which effectively solves the problems of low accuracy, slow efficiency and easy damage to workpieces in traditional reflectivity measurement. It is particularly suitable for automobile manufacturers, parts suppliers and quality inspection agencies to carry out fast, accurate and non-destructive quality inspection of rearview mirror products. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the automotive rearview mirror reflectivity testing device in a preferred embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the automotive rearview mirror reflectivity testing device in a preferred embodiment of the present invention. Figure 3 This is a side view of the automotive rearview mirror reflectivity testing device in a preferred embodiment of the present invention; Figure 4 This is a schematic diagram of the automotive rearview mirror reflectivity testing device in a preferred embodiment of the present invention.

[0020] Reference numerals: 1. Frame; 2. Optical measuring mechanism; 201. Integrating sphere; 202. Integrating sphere clamp; 203. Standard light source; 204. Collimator; 205. Photodetector; 206. Reflection analyzer; 3. First support plate; 4. Rotation mechanism; 5. Connector; 6. Drive mechanism; 7. Second support plate; 8. Push plate; 9. Elastic buffer assembly; 901. Guide rod; 902. Compression spring; 10. Height equalization screw. Detailed Implementation

[0021] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0022] Reference Figures 1-4As shown in the preferred embodiment of this utility model, a car rearview mirror reflectivity testing device includes a frame 1 and an optical measuring mechanism 2. A first support plate 3 is mounted on the frame 1, and a rotating mechanism 4 for adjusting the rotation angle of the optical measuring mechanism 2 is mounted on the first support plate 3. A connecting member 5 is fixedly provided at the output end of the rotating mechanism 4, and a driving mechanism 6 for driving the optical measuring mechanism 2 to move up and down is mounted on the connecting member 5, realizing automatic and precise adjustment of the angle and height position of the optical measuring mechanism. This not only significantly reduces the labor intensity and skill requirements of operators, but also avoids random errors caused by manual adjustment, making it particularly suitable for rapid, batch testing on production lines.

[0023] As a preferred embodiment of the present invention, it may also have the following additional technical features: the optical measurement mechanism 2 includes an integrating sphere 201, an integrating sphere clamping block 202 for clamping the integrating sphere 201, and a second support plate 7 fixedly installed on the integrating sphere clamping block 202, the second support plate 7 being connected to the driving mechanism 6.

[0024] In this embodiment, the optical measurement mechanism 2 also includes a standard light source 203, a collimator 204, and a photodetector 205. The light emitted by the standard light source 203 is parallelized by the collimator 204 and illuminates the rearview mirror under test. After being reflected by the rearview mirror, the light enters the integrating sphere 201 and is finally received by the photodetector 205. This generates a stable parallel light source and efficiently collects the reflected light, ensuring the accuracy and consistency of the light signal and laying a solid foundation for high-precision measurement.

[0025] In this embodiment, the optical measurement mechanism 2 further includes a reflection analyzer 206, which is electrically connected to the photoelectric receiver 205 and is used to process photoelectric signals and calculate reflectivity. It can automatically process light signals and calculate reflectivity, eliminating human reading errors and improving the objectivity and reliability of the data.

[0026] In this embodiment, the rotating mechanism 4 includes a drive motor mounted on the first support plate 3. The output shaft of the drive motor is fixedly connected to the connecting member 5 to drive its rotation. The connecting member 5 is a connecting plate. The driving mechanism 6 includes a cylinder mounted on the connecting plate. The piston rod of the cylinder extends downward and is connected to a push plate 8. This combination of the rotating mechanism and the lifting mechanism allows the optical measuring probe to be flexibly positioned in two degrees of freedom (rotation and lifting), which can quickly adapt to the installation position and angle of different vehicle models and different types of rearview mirrors, greatly improving the versatility and testing efficiency of the equipment.

[0027] In this embodiment, the push plate 8 and the second support plate 7 are connected by an elastic buffer assembly 9. The elastic buffer assembly 9 includes a guide rod 901 and a compression spring 902 sleeved on the guide rod 901. The lower end of the guide rod 901 is fixedly connected to the second support plate 7, and the upper end passes through the push plate 8 and the connecting plate in sequence and extends upward. This design enables the optical measurement mechanism (integrating sphere) to have a buffering function when in contact with the rearview mirror surface, which can ensure a constant measurement distance (contact measurement) and effectively prevent damage to delicate optical components or scratches to the measured mirror surface due to rigid contact, thereby improving the safety and service life of the equipment.

[0028] In this embodiment, the push plate 8 and the connecting plate are provided with corresponding limiting blocks, and the limiting blocks are provided with limiting holes for the guide rod to pass through. This enhances the stability of the structure.

[0029] In this embodiment, at least two equal-height screws 10 are symmetrically arranged between the push plate 8 and the connecting plate. The equal-height screws 10 are used to ensure that the push plate 8 moves parallel to the connecting plate. This ensures the parallelism of the push plate during movement, further guarantees the stability of the integrating sphere's attitude, and makes the measurement results more repeatable.

[0030] Without causing conflict, those skilled in the art can freely combine and use the above-mentioned additional technical features.

[0031] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A device for testing the reflectivity of a car rearview mirror, characterized in that: The device includes a frame and an optical measuring mechanism. A first support plate is mounted on the frame, and a rotating mechanism for adjusting the rotation angle of the optical measuring mechanism is mounted on the first support plate. A connecting member is fixedly provided at the output end of the rotating mechanism, and a driving mechanism for driving the optical measuring mechanism to move up and down is mounted on the connecting member.

2. The automotive rearview mirror reflectivity testing device according to claim 1, characterized in that: The optical measurement mechanism includes an integrating sphere, an integrating sphere clamping block for holding the integrating sphere, and a second support plate fixedly mounted on the integrating sphere clamping block, the second support plate being connected to the driving mechanism.

3. The automotive rearview mirror reflectivity testing device according to claim 2, characterized in that: The optical measurement mechanism also includes a standard light source, a collimator, and a photodetector. The light emitted by the standard light source is parallelized by the collimator and illuminates the rearview mirror under test. After being reflected by the rearview mirror, the light enters the integrating sphere and is finally received by the photodetector.

4. The automotive rearview mirror reflectivity testing device according to claim 3, characterized in that: The optical measurement mechanism also includes a reflection analyzer, which is electrically connected to the photoelectric receiver and is used to process photoelectric signals and calculate reflectivity.

5. The automotive rearview mirror reflectivity testing device according to claim 2, characterized in that: The rotating mechanism includes a drive motor mounted on the first support plate, and the output shaft of the drive motor is fixedly connected to the connecting member to drive its rotation.

6. The automotive rearview mirror reflectivity testing device according to claim 5, characterized in that: The connector is a connecting plate, and the driving mechanism includes a cylinder mounted on the connecting plate, with the piston rod of the cylinder extending downward and connected to a push plate.

7. The automotive rearview mirror reflectivity testing device according to claim 6, characterized in that: The push plate and the second support plate are connected by an elastic buffer assembly; the elastic buffer assembly includes a guide rod and a compression spring sleeved on the guide rod, the lower end of the guide rod is fixedly connected to the second support plate, and the upper end passes through the push plate and the connecting plate in sequence and extends upward.

8. The automotive rearview mirror reflectivity testing device according to claim 7, characterized in that: The push plate and the connecting plate are provided with corresponding limiting blocks, and the limiting blocks are provided with limiting holes for the guide rod to pass through.

9. The automotive rearview mirror reflectivity testing device according to claim 8, characterized in that: At least two equal-height screws are symmetrically arranged between the push plate and the connecting plate. The equal-height screws are used to ensure that the push plate moves parallel to the connecting plate.

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