Lens impact testing device

Abstract

This utility model relates to the field of lens testing technology, and more particularly to a lens impact resistance testing device, comprising a base, with side columns symmetrically distributed and fixed on both sides of the upper end of the base. A support rod one and a support rod two are fixed between the two side columns, with support rod one located directly above support rod two. A rod sleeve one is slidably fitted onto the surface of support rod one, and a rod sleeve two is slidably fitted onto the surface of support rod two. Extension blocks are fixedly installed on the surfaces of both rod sleeve one and rod sleeve two, with impact columns one and two slidably penetrating the interior of each extension block. This design, through the symmetrically distributed side columns and the vertically positioned support rods one and two, constructs a stable and reliable impact resistance testing frame structure, ensuring that the impact column maintains precise centering and stable movement during vertical descent, effectively avoiding testing errors caused by frame swaying or displacement.

Description

Technical Field

[0001] This utility model relates to the field of lens testing technology, and in particular to a lens impact resistance testing device. Background Technology

[0002] Lenses are an essential component of optical devices and eyeglasses, widely used in daily life, industrial production, and scientific research. Whether used for correcting vision or for protecting the eyes, the quality and performance of lenses directly affect the user's visual experience and eye safety.

[0003] Impact resistance testing aims to evaluate the lens's resistance to external impact, preventing accidental breakage and avoiding eye injuries from fragments. The test screens out qualified lenses, ensuring product stability and durability in practical use. For example, Chinese Patent Publication No. CN209764619U provides a lens impact resistance testing device, including a base plate with a lens fixing ring and a torsion spring base. A drop hammer is located on the upper part of the lens fixing ring, and a torsion spring is fixedly installed on the torsion spring base. A torsion arm extending laterally from the top of the torsion spring connects to the drop hammer, and the bottom end of the torsion spring is secured to the torsion spring base. This invention, through the arrangement of the drop hammer and torsion spring, converts the kinetic energy of the falling ball in existing impact resistance testing standards into the kinetic energy of the drop hammer, simplifying the testing device and saving space. The device described in this invention is small in size, simple in structure, requires minimal operation, is versatile, lightweight, and portable, making it suitable for demonstration tests for introduction or promotion in conferences, exhibitions, and other occasions.

[0004] Currently, the methods for testing the impact resistance of lenses are relatively simple. The lens is placed on a workbench and impacted by objects of different masses to obtain the impact resistance of the lens. However, since the lens may be used alone or worn on the face, its impact resistance will be different. Therefore, it is necessary to design a testing device that can perform tests in both states to meet the impact resistance requirements of the lens when it is paired with a frame and worn, as well as when it is placed alone. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a lens impact resistance testing device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: Design a lens impact resistance testing device, including a base, with side columns symmetrically distributed and fixed on the upper end of the base along both sides, and a support rod one and a support rod two fixed between the two side columns respectively, with the support rod one located directly above the support rod two, and a rod sleeve one slidably sleeved on the surface of the support rod one, and a rod sleeve two slidably sleeved on the surface of the support rod two. Both the first and second sleeves are fixedly mounted with extension blocks, and impact columns one and two are slidably inserted through the interior of the extension blocks respectively.

[0007] Preferably, a threaded sleeve is fixed through the upper end of the first rod sleeve, and a threaded knob is installed inside the threaded sleeve. The inward side of the threaded knob is in close contact with the surface of the first support rod.

[0008] Preferably, a threaded sleeve two is fixed through one side of the extension block, and a threaded knob two is installed on the internal thread of the threaded sleeve two. The inward side of the threaded knob two is in close contact with the surface of the impact column one.

[0009] Preferably, a threaded sleeve three is fixed through the side of the extension block away from the threaded sleeve two, and a threaded knob three is installed on the internal thread of the threaded sleeve three, with the inward side of the threaded knob three abutting tightly against the surface of the impact column two.

[0010] Preferably, the upper end of the base is symmetrically distributed with slide rails on both sides, and slide blocks are slidably disposed on the surface of the slide rails. The upper ends of the two slide blocks distributed on both sides are jointly mounted with the same moving platform.

[0011] Preferably, a lens holder for placing a single lens is fixedly installed on one side of the upper end of the moving platform via a bracket, and a mask holder for placing a mask mold is fixedly installed on the side of the moving platform away from the lens holder. Preferably, a grille is fixedly installed on the upper end of the base, and the grille surrounds the side posts and the slide rail.

[0012] The design scheme proposed in this utility model has the following beneficial effects in application: 1. This solution constructs a stable and reliable impact-resistant test frame structure through symmetrically distributed side columns and upper and lower support rods 1 and 2. This ensures that the impact column maintains precise centering and smooth movement during vertical descent, effectively avoiding test errors caused by frame swaying or offset. At the same time, rod sleeves 1 and 2 slide along the support rods, allowing the impact column to be flexibly adjusted in horizontal position, facilitating multi-point impact testing of different areas of the lens or mask, and enhancing the test coverage and applicability. 2. As described in 1, two impact columns of different diameters, impact column one and impact column two, are used. The specifications of the impact head can be flexibly changed according to the test requirements to simulate various impact conditions, thereby obtaining more comprehensive and multi-level impact resistance performance data. The impact column is tightly connected to the rod sleeve through the extension block, and can be quickly locked or released through the threaded knob during the sliding process. This ensures the vertical stability during the impact process and also realizes the convenience of height adjustment and position fixation. 3. As described in section 2, the slide rail and slide block structure on the base allows the moving stage to be adjusted back and forth. With the use of the lens holder and mask holder, it can support the testing needs of a single lens and the entire mask mold respectively, and realistically simulate two scenarios: the lens being subjected to force alone and the lens being subjected to impact while being worn. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall front structure of this utility model; Figure 2 This is a top view of the overall structure of this utility model; Figure 3 This is a partially enlarged schematic diagram of the threaded sleeve and threaded knob of this utility model; Figure 4 This is a partially enlarged schematic diagram of threaded knob two and threaded knob three of this utility model; Figure 5 This is a schematic diagram of the slide rail and slide base structure of this utility model.

[0014] In the diagram: 1. Base; 11. Side column; 12. Support rod one; 13. Support rod two; 14. Rod sleeve one; 15. Rod sleeve two; 16. Extension block; 17. Impact column one; 18. Impact column two; 141. Threaded sleeve one; 142. Threaded knob one; 171. Threaded sleeve two; 172. Threaded knob two; 181. Threaded sleeve three; 182. Threaded knob three; 2. Slide rail; 21. Slide seat; 22. Moving platform; 23. Lens holder; 3. Grille. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Reference Figure 1 picture- Figure 5 A lens impact resistance testing device includes a base 1. Side columns 11 are symmetrically distributed and fixed on both sides of the upper end of the base 1. Support rod 12 and support rod 2 13 are fixed between the two side columns 11 respectively. Support rod 12 is located directly above support rod 2 13. Rod sleeve 14 is slidably sleeved on the surface of support rod 12, and rod sleeve 2 15 is slidably sleeved on the surface of support rod 2 13. Support rod 12 and support rod 2 13, together with the base 1, can form a frame structure for impact resistance testing. Support rod 12 and support rod 2 13 can ensure that the impact column structure can play a supporting role when the corresponding lens is subjected to vertical drop impact. The sliding of rod sleeve 14 on the surface of support rod 12 and the sliding of rod sleeve 2 15 on the surface of support rod 2 13 can realize the horizontal movement adjustment of the impact column structure. Extension blocks 16 are fixedly installed on the surfaces of both sleeve 14 and sleeve 2 15. Impact column 17 and impact column 2 18 are slidably installed inside the extension blocks 16 respectively. The diameter of impact column 17 is half the diameter of impact column 2 18. Different test data can be obtained when impact resistance testing is carried out by using impact columns of different specifications. The two extension blocks 16 distributed vertically can ensure the stability of the vertical drop of the impact column.

[0017] Among them, the upper end of the sleeve 14 is fixed with a threaded sleeve 141, and the internal thread of the threaded sleeve 141 is fitted with a threaded knob 142. The inward side of the threaded knob 142 is in close contact with the surface of the support rod 12. By moving the threaded knob 142 based on the thread of the threaded sleeve 141, the sliding of the sleeve 14 relative to the support rod 12 can be squeezed and compacted.

[0018] One side of the extension block 16 is fixed with a threaded sleeve 171. The threaded sleeve 171 has a threaded knob 172 installed inside. The inward side of the threaded knob 172 is in close contact with the surface of the impact column 17. By moving the threaded knob 172 based on the thread of the threaded sleeve 171, the sliding process of the impact column 17 based on the extension block 16 can be locked, positioned or released.

[0019] Among them, the side of the extension block 16 away from the threaded sleeve 171 is fixed with the threaded sleeve 181. The threaded sleeve 181 has a threaded knob 182 installed in its internal thread. The inward side of the threaded knob 182 is in close contact with the surface of the impact column 18. By moving the threaded knob 182 based on the thread of the threaded sleeve 181, the sliding process of the impact column 18 based on the extension block 16 can be locked, positioned or released.

[0020] The base 1 has slides 2 symmetrically distributed and fixed on both sides of the upper end. The slides 2 have slide blocks 21 slidably mounted on the surface of the slide blocks 2. The upper ends of the two slide blocks 21 distributed on both sides are jointly mounted with the same moving platform 22. By sliding the slide blocks 21 on the slide blocks 2, the front and rear positions of the moving platform 22 can be adjusted, so that the lens holder 23 and the mask holder 24 can be appropriately adjusted in accordance with the impact position of the impact column. The inner side of the slide block 21 is bonded with a rubber pad, which can play a damping effect when sliding relative to the slide blocks 2.

[0021] The upper side of the moving platform 22 is fixedly mounted with a lens holder 23 for placing a single lens via a bracket. The side of the moving platform 22 away from the lens holder 23 is fixedly mounted with a mask holder 24 for placing a mask mold. The lens holder 23 can hold a lens and is used for stable positioning during single lens impact resistance testing. The mask holder 24 can hold a mask that simulates human facial features. Then, the lens that has been installed on the frame is put on the mask to simulate the situation of a human face wearing glasses and to conduct impact resistance testing. The base 1 is fixedly equipped with a grille 3 at its upper end. The grille 3 surrounds the side post 11 and the slide 2. During testing, the grille 3 can help block the splashing of large broken glass fragments.

[0022] Working method: This solution constructs a stable impact-resistant test frame structure through symmetrically fixed side columns 11 on the base 1, and support rod 12 and support rod 23 connected between the two side columns 11. Support rod 12 is located directly above support rod 23. The two work together to ensure that the impact column structure remains stable during vertical drop impact. Rod sleeve 14 is slidably fitted on the surface of support rod 12, and rod sleeve 25 is slidably fitted on the surface of support rod 23, so that the impact column structure can be moved horizontally to adjust its position to meet the needs of different test points. Extension block 16 is fixed on the surfaces of rod sleeve 14 and rod sleeve 25 respectively, and impact column 17 and impact column 28 are slidably installed through them. The diameter of impact column 17 is half the diameter of impact column 28. By selecting impact columns of different specifications, different impact conditions can be simulated to obtain diverse test data. The vertical distribution design of extension block 16 further ensures the stability of the impact column during vertical drop, prevents deviation or tilting, and ensures the accuracy of test results. The precise positioning and height adjustment of the impact column and sliding components are achieved through a threaded fastening mechanism. A threaded sleeve 141 is fixed through the upper end of the sleeve 14, and a threaded knob 142 is installed inside the thread. By rotating the threaded knob 142, it can be moved inward and pressed tightly against the surface of the support rod 12, thereby locking the sleeve 14 and preventing it from sliding on the support rod 12. Similarly, a threaded sleeve 171 is fixed through one side of the extension block 16, and a threaded knob 172 is installed inside the thread. This is used to lock or release the sliding process of the impact column 17 based on the extension block 16. A threaded sleeve 181 is fixed through the other side of the extension block 16, and a threaded knob 182 is installed inside the thread. This is used to control the sliding and fixing of the impact column 18. The upper end of the base 1 is symmetrically fixed with slide rails 2 on both sides. Slide seats 21 are slidably mounted on the surface of the slide rails 2. A moving platform 22 is mounted on the upper end of the slide seats 21. The front and rear positions of the moving platform 22 can be adjusted by sliding the slide seats 21 so that the lens holder 23 and the mask holder 24 can be aligned with the impact point of the impact column. The rubber pads bonded to the inner side of the slide seats 21 provide sliding damping, enhancing the control accuracy and stability during adjustment. The lens holder 23 is fixedly mounted on one side of the upper end of the moving platform 22 by a bracket, which is used to place a single lens and conduct impact resistance testing. The mask holder 24 is fixedly mounted on the other side, which is used to place a mask mold simulating a human face and can install a frame with assembled lenses to simulate the impact resistance performance under real wearing conditions. The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A lens impact resistance testing device, comprising a base (1), characterized in that: The upper end of the base (1) is symmetrically distributed with side columns (11) on both sides. Support rod one (12) and support rod two (13) are fixed between the two side columns (11). Support rod one (12) is located directly above support rod two (13). Rod sleeve one (14) is slidably sleeved on the surface of support rod one (12), and rod sleeve two (15) is slidably sleeved on the surface of support rod two (13). Both the first (14) and the second (15) of the rod sleeve are fixedly installed with extension blocks (16), and the first (17) and the second (18) of the impact column are slidably inserted inside the extension block (16).

2. The lens impact resistance testing device according to claim 1, characterized in that: The upper end of the first sleeve (14) is fixed with a threaded sleeve (141), and a threaded knob (142) is installed inside the threaded sleeve (141). The inner side of the threaded knob (142) is in close contact with the surface of the support rod (12).

3. The lens impact resistance testing device according to claim 2, characterized in that: One side of the extension block (16) is fixed with a threaded sleeve two (171), and the threaded sleeve two (171) is threaded with a threaded knob two (172) installed in the internal thread. The inward side of the threaded knob two (172) is in close contact with the surface of the impact column one (17).

4. The lens impact resistance testing device according to claim 3, characterized in that: The extension block (16) is fixed with a threaded sleeve three (181) on the side away from the threaded sleeve two (171). The threaded sleeve three (182) is installed with a threaded knob three (182) on the internal thread. The inward side of the threaded knob three (182) is in close contact with the surface of the impact column two (18).

5. The lens impact resistance testing device according to claim 4, characterized in that: The upper end of the base (1) is symmetrically distributed with slide rails (2) on both sides. Slide seats (21) are slidably arranged on the surface of the slide rails (2). The upper ends of the two slide seats (21) distributed on both sides are jointly equipped with the same moving platform (22).

6. The lens impact resistance testing device according to claim 5, characterized in that: A lens holder (23) for placing a single lens is fixedly installed on one side of the upper end of the mobile platform (22) by a bracket, and a mask holder (24) for placing a mask mold is fixedly installed on the side of the mobile platform (22) away from the lens holder (23).

7. The lens impact resistance testing device according to claim 6, characterized in that: A grille (3) is fixedly installed on the upper end of the base (1), and the grille (3) surrounds the side column (11) and the slide (2).

Images