Strength detection device for explosion-proof lens of automobile sun shield

Abstract

The invention provides a strength detection device for an explosion-proof lens of an automobile sun shield, and relates to the technical field of lens strength detection, the strength detection device comprises a device frame, an amplitude frame is fixedly connected to the middle position in the device frame, and an adjusting frame is fixedly mounted at the middle lower position in the amplitude frame. When the transmission screw rod is rotated, the rack plate slides in the adjusting frame to drive the semi-gear scale frame to rotate so as to enable the rotating frame to rotate, and the rotating frame can be intuitively and accurately adjusted to a required detection angle through the semicircular angle scales on the pointing rod and the semi-gear scale frame. The lateral stress and oblique stress conditions which may be encountered by the explosion-proof lens in actual use can be simulated. The device solves the problems that an existing device for detecting the strength of an explosion-proof lens of an automobile sun shield has defects in the aspect of accurate adjustment of a detection angle, and is difficult to simulate external force impact of various angles possibly encountered by the lens in actual use, so that a detection result is deviated from a real situation, and the strength of the lens cannot be comprehensively and accurately evaluated.

Description

Technical Field

[0001] The present invention relates to the technical field of lens strength detection, in particular to a strength detection device for explosion-proof lenses of automobile sun visors. Background Art

[0002] Car sun visors are crucial components for ensuring driving safety and comfort, and explosion-proof lenses are particularly crucial. With the development of the automotive industry and the increasing demand for driving safety, the performance of explosion-proof lenses, as part of the strategic new material service offering, is crucial for protecting vehicle occupants. These lenses are typically manufactured using advanced materials and processes, such as high-strength composite materials or polymers with special additives. These lenses maintain their integrity in the event of impact, preventing them from shattering into sharp fragments that could injure vehicle occupants. Furthermore, explosion-proof lenses meeting the strategic new material service offering should exhibit excellent optical performance, UV resistance, and thermal stability to meet the demands of diverse automotive environments.

[0003] Regarding the existing application of automobile sun visor explosion-proof lens strength testing, there are currently the following deficiencies: 1. Existing automobile sun visor explosion-proof lens strength testing devices have deficiencies in the precise adjustment of the testing angle. This makes it difficult to simulate the various angles of external force impact that lenses may encounter in actual use, resulting in deviations between the test results and the actual situation, making it impossible to fully and accurately assess the lens strength. 2. The existing automobile sun visor explosion-proof lens strength detection device has deficiencies in the precise adjustment of the detection angle. It is difficult to simulate the external force impacts of various angles that the lens may encounter in actual use, resulting in deviations between the test results and the actual situation, and it is impossible to comprehensively and accurately evaluate the lens strength.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a strength detection device for explosion-proof lenses of automobile sun visors is provided, in order to achieve a more practical purpose. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a strength detection device for explosion-proof lenses of automobile sun visors, so as to solve the problems that the existing strength detection device for explosion-proof lenses of automobile sun visors has deficiencies in the precise adjustment of detection angles, and it is difficult to simulate external force impacts of various angles that the lenses may encounter in actual use, resulting in deviations between the detection results and the actual situation, and it is impossible to comprehensively and accurately evaluate the strength of the lenses.

[0006] The present invention provides a strength detection device for explosion-proof lenses of automobile sun visors, which specifically includes: a device frame, an internal middle position of the device frame is fixedly connected to an amplitude frame, an internal middle and lower position of the amplitude frame is fixedly installed with an adjustment frame, an internal middle position of the adjustment frame is rotatably connected to a conduction screw, an internal upper position of the adjustment frame is slidably connected to a rack plate, racks are respectively provided at the left and right sides of the rack plate, and an extension block is provided at the bottom position of the rack plate, the extension block of the rack plate is adjusted internally, a threaded hole is opened at the middle position of the front end of the extension block of the rack plate, and the conduction screw is located at the threaded portion of the rack plate extension block. In the hole, the left and right sides in the middle of the amplitude frame are rotatably connected to the left and right sides in the middle of the rotating frame respectively, and a half-gear scale frame is fixedly installed on the left and right sides of the rotating frame. The two half-gear scale frames are engaged with the left and right sides of the top of the rack plate. An angle rotating seat is fixedly connected to the middle position of the top of the rotating frame, and an angle scale is provided on the circumference of the angle rotating seat. A pointing rod is provided in the upper middle position of the left and right sides of the amplitude frame. The two pointing rods point to the semicircular angle scale at the outer position of the half-gear scale frame. When the rotating frame and the amplitude frame are in a parallel state, the pointing rod points to the initial value of the half-gear scale frame.

[0007] Furthermore, a sliding frame A is slidably connected to the middle and rear position of the top of the device frame, a screw A is rotatably connected to the middle position inside the sliding frame A, the inner position of the sliding frame A is slidably connected to the bottom position of the sliding frame B, a threaded hole is opened on the side position of the sliding frame B, and the screw A is located in the threaded hole of the sliding frame B.

[0008] Furthermore, a threaded hole is provided at the upper rear end of the device frame, and a screw B is rotatably connected to the middle rear end of the sliding frame A. The screw B is located in the threaded hole above the rear end of the device frame, and a lifting frame is slidably connected to the lower front end of the sliding frame B. A threaded hole is provided at the middle rear end of the top of the lifting frame.

[0009] Furthermore, a motor A is fixedly connected to the upper front end of the sliding frame B, the rotating shaft of the motor A is provided with a thread, and the rotating shaft of the motor A is located in the threaded hole of the lifting frame, and a controller is fixedly connected to the top front end of the lifting frame, and an extendable pressure sensing rod is provided at the bottom position of the controller, and the pressure sensing rod passes through the internal front end position of the lifting frame.

[0010] Furthermore, the top middle position of the angle rotating seat is fixedly connected to the bottom middle position of the limit frame, and a slide groove is respectively provided at the front and rear ends of the top of the limit frame, and size scales are provided at the edges of the slide grooves of the two limit frames. An opposing slider is respectively slidably connected in the two slide grooves of the limit frame, and an arc wire is provided at the bottom position of the two opposing sliders, and a matching frame is fixedly installed at the top position of the two opposing sliders.

[0011] Furthermore, the two matching frames are symmetrically designed, and a semicircular clamp is rotatably connected to the left and right positions on the inner side of each matching frame, and the semicircular clamp is located above the opposite slider.

[0012] Furthermore, explosion-proof lenses are placed on the top of the two opposing sliders, and two semicircular clips are respectively attached to the front and rear ends of the explosion-proof lenses.

[0013] Furthermore, the internal position of the limit frame is rotatably connected to a bevel gear ring, and the top position of the bevel gear ring is provided with a spiral wire. The spiral wire position of the bevel gear ring engages with the arc wire of the two opposing sliders. The middle position of the internal front end of the limit frame is rotatably connected to a bevel gear, and the bottom position of the bevel gear engages with the bottom front end position of the bevel gear ring.

[0014] Compared with the prior art, the present invention has the following beneficial effects: When the conduction screw is rotated, the rack plate slides in the adjustment frame, driving the half-gear scale frame to rotate, and then the rotating frame rotates. The rotating frame can be adjusted to the required detection angle intuitively and accurately through the semicircular angle scale on the pointing rod and the half-gear scale frame. It can simulate the side position force and oblique force conditions that explosion-proof lenses may encounter in actual use, solves the shortcomings of existing detection devices in the precise adjustment of detection angles, avoids deviation between detection results and actual conditions, and enables the detection results to more comprehensively and accurately evaluate the strength of the lens.

[0015] In addition, the angle scale set on the angle rotation seat can further record the lateral rotation angle of the lens, facilitate the detection position of the pressure sensing rod contacting the lens, and provide more dimensional data support for detection.

[0016] The device can stably fix explosion-proof lenses of different sizes and shapes. When fixing the lens, the rotating bevel gear drives the bevel gear ring to rotate, so that the two opposing sliders slide relatively close to each other in the slide groove of the limit frame, and the matching frame moves accordingly. The four semicircular clamps tightly fit the front and back ends of the lens, and the semicircular clamps can be adaptively rotated and adjusted with the matching frame to adapt according to the edge shape of the lens, ensuring the stability of the lens during the inspection process and improving the reliability of the inspection. At the same time, combined with the size scale on the edge of the slide groove of the limit frame, it can also accurately know whether the length of the lens meets the standard, increasing the diversity of the inspection function.

[0017] This device can stably secure explosion-proof lenses of various sizes and shapes. When securing the lens, rotating the bevel gear drives the bevel gear ring, causing the two opposing sliders to slide closer together within the guide slots of the retaining frame. The mating frame then moves, and four semicircular clamps secure the front and back ends of the lens in place. The clamps also rotate and adjust adaptively with the mating frame to match the shape of the lens edge, ensuring lens stability during testing and improving detection reliability.

[0018] Combined with the size scale on the edge of the limit frame slide, it is also possible to accurately determine whether the length of the lens meets the standard, increasing the diversity of the detection function.

[0019] The setting of the controller and pressure sensing rod enables real-time feedback of pressure data during the detection process. When the pressure sensing rod applies pressure to the explosion-proof lens, the pressure sensing rod feeds back real-time pressure data to the controller, making it convenient for operators to record and analyze the strength performance of the lens under different pressures, providing accurate data basis for evaluating the quality of the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0021] In the attached figure: Figure 1 A schematic diagram of the main structure of a device for detecting the strength of an explosion-proof lens for a car sun visor according to an embodiment of the present invention is shown; Figure 2 A schematic side view of the structure of a strength detection device for an explosion-proof lens of a car sun visor according to an embodiment of the present invention is shown; Figure 3 It shows a schematic diagram of the overall left side structure of the device frame according to an embodiment of the present invention; Figure 4 It shows a schematic side view of the overall structure of the device frame according to an embodiment of the present invention; Figure 5 It shows a schematic diagram of the overall left-side structure of the amplitude rack according to an embodiment of the present invention; Figure 6 It shows a schematic side view of the overall structure of the amplitude frame according to an embodiment of the present invention; Figure 7 A schematic diagram of a half-section side view of the overall structure of a limiting frame according to an embodiment of the present invention is shown; Figure 8 The embodiment according to the present invention is shown Figure 2 Schematic diagram of the locally enlarged structure at point A in the middle.

[0022] Reference Signs List 1. Device frame; 101. Sliding frame A; 102. Screw A; 103. Sliding frame B; 104. Screw B; 105. Lifting frame; 106. Motor A; 107. Controller; 108. Pressure sensing rod; 2. Amplitude frame; 201. Adjustment frame; 202. Conduction screw; 203. Rack plate; 204. Rotating frame; 205. Half-gear scale frame; 206. Angle rotating seat; 207. Pointing rod; 3. Limiting frame; 301. Bevel gear ring; 302. Bevel gear; 303. Opposing slider; 304. Matching frame; 305. Semicircular clamp; 4. Explosion-proof lens. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0024] Unless otherwise defined, all terms (including technical and scientific terms) used in the embodiments of the present disclosure have the same meaning as commonly understood by those skilled in the art to which the present disclosure belongs. It should also be understood that terms such as those defined in common dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or highly formal sense, unless explicitly defined in this manner in the embodiments of the present disclosure.

[0025] The terms "first", "second" and similar terms used in the embodiments of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms "one", "an" or "the" and similar terms do not indicate a quantitative limitation, but rather indicate the presence of at least one. Similarly, the terms "include" or "comprise" and similar terms mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. In the following description, spatial and directional terms such as "upper", "lower", "front", "back", "top", "bottom", "vertical" and "horizontal" may be used to describe the embodiments of the present disclosure, but it should be understood that these terms are only for the convenience of describing the embodiments shown in the figures and do not require the actual device to be constructed or operated in a specific orientation. In the following description, the use of terms such as "connect", "couple", "fixed" and "attached" may refer to a direct connection between two elements or structures without other elements or structures between them, or may refer to an indirect connection between two elements or structures through an intermediate element or structure, unless otherwise expressly stated herein.

[0026] Example: As attached Figure 1 To the attached Figure 8 As shown: The present invention provides a strength detection device for explosion-proof lenses of automobile sun visors, comprising: a device frame 1, an amplitude frame 2 is fixedly connected to the middle position of the device frame 1, an adjustment frame 201 is fixedly installed at the middle and lower position of the amplitude frame 2, a conduction screw 202 is rotatably connected to the middle position of the adjustment frame 201, a rack plate 203 is slidably connected to the upper position of the adjustment frame 201, racks are respectively provided at the left and right sides of the rack plate 203, and an extension block is provided at the bottom position of the rack plate 203, the extension block of the rack plate 203 is adjusted to the inner position of the rack frame 201, a threaded hole is opened at the middle position of the front end of the extension block of the rack plate 203, the conduction screw 202 is located in the threaded hole of the extension block of the rack plate 203, and the amplitude frame 201 is fixed to the middle position of the device frame 1, and the conduction screw 202 is located in the threaded hole of the extension block of the rack plate 203. The left and right sides of the middle of the degree frame 2 are respectively rotatably connected to the left and right sides of the middle of the rotating frame 204. A half-gear scale frame 205 is fixedly installed on the left and right sides of the rotating frame 204. The two half-gear scale frames 205 are meshed with the left and right sides of the top of the rack plate 203. An angle rotating seat 206 is fixedly connected to the middle position of the top of the rotating frame 204. An angle scale is set on the circumference of the angle rotating seat 206. A pointing rod 207 is set at the upper middle position of the left and right sides of the amplitude frame 2. The two pointing rods 207 point to the semicircular angle scale at the outer position of the half-gear scale frame 205. When the rotating frame 204 and the amplitude frame 2 are in a parallel state, the pointing rod 207 points to the initial value of the half-gear scale frame 205.

[0027] Among them, the sliding frame A101 is slidably connected to the middle and rear position of the top of the device frame 1, and the screw A102 is rotatably connected to the middle position inside the sliding frame A101. The inner position of the sliding frame A101 is slidably connected to the bottom position of the sliding frame B103. A threaded hole is opened on the side position of the sliding frame B103, and the screw A102 is located in the threaded hole of the sliding frame B103.

[0028] Among them, a threaded hole is opened at the upper position of the rear end of the device frame 1, and a screw B104 is rotatably connected to the middle position of the rear end of the sliding frame A101. The screw B104 is located in the threaded hole above the rear end of the device frame 1. The lower position of the front end of the sliding frame B103 is slidably connected to the lifting frame 105, and a threaded hole is opened at the middle position of the top rear end of the lifting frame 105.

[0029] Among them, the motor A106 is fixedly connected to the upper front end position of the sliding frame B103, the rotating shaft of the motor A106 is provided with a thread, and the rotating shaft of the motor A106 is located in the threaded hole of the lifting frame 105, and the top front end position of the lifting frame 105 is fixedly connected to the controller 107, and the bottom position of the controller 107 is provided with an extendable pressure sensing rod 108, and the pressure sensing rod 108 passes through the internal front end position of the lifting frame 105.

[0030] Among them, the top middle position of the angle rotating seat 206 is fixedly connected to the bottom middle position of the limit frame 3, and a sliding groove is respectively opened at the front and rear ends of the top of the limit frame 3, and the edge positions of the sliding grooves of the two limit frames 3 are provided with size scales, and an opposing slider 303 is respectively slidably connected in the two sliding grooves of the limit frame 3, and the bottom positions of the two opposing sliders 303 are provided with arc wires, and the top positions of the two opposing sliders 303 are respectively fixedly installed with a matching frame 304.

[0031] The two matching frames 304 are symmetrically designed, and a semicircular clamp 305 is rotatably connected to the left and right inner sides of each matching frame 304 . The semicircular clamp 305 is located above the opposing slider 303 .

[0032] The explosion-proof lens 4 is placed on the top of the two opposing sliders 303 , and the front and rear ends of the explosion-proof lens 4 are respectively fitted with two semicircular clips 305 .

[0033] Among them, the internal position of the limit frame 3 is rotatably connected to the bevel gear ring 301, and the top position of the bevel gear ring 301 is provided with a spiral wire. The spiral wire position of the bevel gear ring 301 engages with the arc wires of the two opposing sliders 303. The middle position of the internal front end of the limit frame 3 is rotatably connected to the bevel gear 302, and the bottom position of the bevel gear 302 engages with the bottom front end position of the bevel gear ring 301.

[0034] When using: The explosion-proof lens 4 to be tested is placed on the top of the two opposing sliders 303, and the bevel gear 302 is rotated. The bevel gear 302 drives the meshing bevel gear ring 301 to rotate, and the spiral wire of the bevel gear ring 301 interacts with the arc wire of the opposing slider 303, so that the two opposing sliders 303 slide relatively close in the slide groove of the limiting frame 3, and the matching frame 304 moves close accordingly, until the four semicircular clamps 305 tightly fit and fix the front and back ends of the explosion-proof lens 4, and when the four semicircular clamps 305 clamp the explosion-proof lens 4, according to the shape of the edge of the explosion-proof lens 4, the four semicircular clamps 305 can be adaptively rotated and adjusted with the matching frame 304. Through the above steps, explosion-proof lenses 4 of different sizes and shapes are tightly fixed, ensuring the stability of the lens during the detection process and improving the reliability of the detection; In addition, by combining the size scales at the edge positions of the two limiting frames 3, it is possible to accurately know whether the length of the explosion-proof lens 4 is correct.

[0035] According to the detection requirements, the screw B104 is rotated, and the screw B104 cooperates with the threaded hole on the upper rear end of the device frame 1, and the sliding frame A101 makes a sliding adjustment of the front and rear position at the top position of the device frame 1. After the screw A102 is rotated, the screw A102 cooperates with the threaded hole of the sliding frame B103, and the sliding frame B103 slides left and right inside the sliding frame A101, and the pressure sensing rod 108 is adjusted to the position where the explosion-proof lens 4 needs to be stressed. Next, the motor A106 is started, and the motor A106 is turned. The rotating shaft cooperates with the threaded hole of the lifting frame 105, and the lifting frame 105 slides downward at the front end position of the sliding frame B103 until the bottom position of the pressure sensing rod 108 contacts the explosion-proof lens 4. At this time, the controller 107 is operated to extend the pressure sensing rod 108 to apply downward pressure to the explosion-proof lens 4. The pressure sensing rod 108 feeds back the pressure data to the controller 107 in real time, records and analyzes the strength performance of the explosion-proof lens 4 under different pressures, and completes the strength test of the explosion-proof lens 4 of the car sun visor.

[0036] By rotating the conduction screw 202, the conduction screw 202 cooperates with the threaded hole of the extension block of the rack plate 203, so that the rack plate 203 slides forward and backward above the inside of the adjustment frame 201. When the rack plate 203 slides, the racks on both sides of the rack plate 203 engage with the half-gear scale frame 205, driving the half-gear scale frame 205 to rotate, thereby rotating the rotating frame 204. Observe that the pointing rod 207 points to the semicircular angle scale of the half-gear scale frame 205, and adjust the rotating frame 204 to the required detection angle. At this time, the explosion-proof lens 4 is in an inclined state and is located below the pressure sensing rod 108. When the pressure sensing rod 108 performs strength pressure detection on the explosion-proof lens 4, the side position force and oblique force detection of the explosion-proof lens 4 can be simulated.

[0037] Combined with the angle scale on the angle rotating seat 206 , the angle rotating seat 206 itself can be rotated to adjust the limit, further recording the lateral rotation angle of the explosion-proof lens 4 , making it easier for the pressure sensing rod 108 to contact the detected position of the explosion-proof lens 4 .

[0038] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. The protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A strength detection device for explosion-proof lenses of automobile sun visors, characterized in that: include: The device frame (1) is fixedly connected to the amplitude frame (2) at the middle position inside the device frame (1), and an adjustment frame (201) is fixedly installed at the middle and lower position inside the amplitude frame (2). The middle position inside the adjustment frame (201) is rotatably connected to the conduction screw (202), and the upper position inside the adjustment frame (201) is slidably connected to the rack plate (203), and the left and right sides of the rack plate (203) are respectively provided with racks, and the bottom position of the rack plate (203) is provided with an extension block, the extension block of the rack plate (203) is located inside the adjustment frame (201), and a threaded hole is opened at the middle position of the front end of the extension block of the rack plate (203), and the conduction screw (202) is located in the threaded hole of the extension block of the rack plate (203). The left and right sides of the middle position inside the amplitude frame (2) are respectively provided with racks. The rotating frame (204) is rotatably connected to the left and right sides of the middle of the rotating frame (204), and a half-gear scale frame (205) is fixedly installed on the left and right sides of the rotating frame (204). The two half-gear scale frames (205) are meshed with the left and right sides of the top of the rack plate (203). The middle position of the top of the rotating frame (204) is fixedly connected to an angle rotating seat (206). The circumferential position of the angle rotating seat (206) is provided with an angle scale. A pointing rod (207) is provided at the upper middle position on the left and right sides of the amplitude frame (2). The two pointing rods (207) correspond to the semicircular angle scales at the outer positions of the half-gear scale frames (205). When the rotating frame (204) and the amplitude frame (2) are in a parallel state, the pointing rod (207) points to the initial value of the half-gear scale frame (205).

2. A strength detection device for explosion-proof lenses for automobile sun visors as claimed in claim 1, characterized in that: The top middle rear position of the device frame (1) is slidably connected to a sliding frame A (101), the inner middle position of the sliding frame A (101) is rotatably connected to a screw rod A (102), the inner position of the sliding frame A (101) is slidably connected to the bottom position of the sliding frame B (103), a threaded hole is opened at the side position of the sliding frame B (103), and the screw rod A (102) is located in the threaded hole of the sliding frame B (103).

3. A strength detection device for explosion-proof lenses for automobile sun visors as claimed in claim 1, characterized in that: A threaded hole is provided at the upper rear end of the device frame (1); a screw rod B (104) is rotatably connected to the middle rear end of the sliding frame A (101); the screw rod B (104) is located in the threaded hole at the upper rear end of the device frame (1); a lifting frame (105) is slidably connected to the lower front end of the sliding frame B (103); a threaded hole is provided at the middle rear end of the top of the lifting frame (105).

4. A strength detection device for explosion-proof lenses for automobile sun visors as claimed in claim 3, characterized in that: A motor A (106) is fixedly connected to the upper front end of the sliding frame B (103), the rotating shaft of the motor A (106) is provided with a thread, and the rotating shaft of the motor A (106) is located in the threaded hole of the lifting frame (105), and a controller (107) is fixedly connected to the top front end of the lifting frame (105), and an extendable pressure sensing rod (108) is provided at the bottom of the controller (107), and the pressure sensing rod (108) passes through the inner front end of the lifting frame (105).

5. A strength detection device for explosion-proof lenses for automobile sun visors as claimed in claim 1, characterized in that: The middle position of the top of the angle rotating seat (206) is fixedly connected to the middle position of the bottom of the limiting frame (3), and a sliding groove is respectively opened at the front and rear ends of the top of the limiting frame (3), and the edge positions of the sliding grooves of the two limiting frames (3) are both provided with size scales. An opposing slider (303) is slidably connected in the two sliding grooves of the limiting frame (3), and the bottom positions of the two opposing sliders (303) are both provided with arc wires. A matching frame (304) is fixedly installed at the top positions of the two opposing sliders (303).

6. A strength detection device for explosion-proof lenses for automobile sun visors as claimed in claim 5, characterized in that: The two matching frames (304) are symmetrically designed, and a semicircular clamp (305) is rotatably connected to the left and right inner sides of each matching frame (304), and the semicircular clamp (305) is located above the opposing slider (303).

7. A strength detection device for explosion-proof lenses for automobile sun visors as claimed in claim 6, characterized in that: An explosion-proof lens (4) is placed on the top of the two opposing sliders (303), and two semicircular clips (305) are respectively attached to the front and rear ends of the explosion-proof lens (4).

8. A strength detection device for explosion-proof lenses for automobile sun visors as claimed in claim 5, characterized in that: The inner position of the limiting frame (3) is rotatably connected to a bevel gear ring (301), the top position of the bevel gear ring (301) is provided with a spiral thread, the spiral thread position of the bevel gear ring (301) engages with the arc threads of two opposing sliders (303), the inner front end middle position of the limiting frame (3) is rotatably connected to a bevel gear (302), and the bottom position of the bevel gear (302) engages with the bottom front end position of the bevel gear ring (301).

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