Mirror frame structure convenient for guaranteeing thickness size and optical lens group
By providing a raised portion with a width smaller than the outer diameter on the end surface of the frame structure, as a thickness detection surface, the problem of difficulty in ensuring the thickness and size of the frame structure in the prior art is solved, and the flatness and accuracy of the product are improved.
Patent Information
- Application Number
- CN202421054786.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-15
AI Technical Summary
In the prior art, the mirror frame structure adopts a large flat end face design, which makes it difficult to ensure the thickness and dimensions between the front and rear end faces, affecting product accuracy.
Design a mirror frame structure, by providing a raised portion with a width smaller than the outer diameter on the first end surface and the second end surface, as a thickness detection surface, the thickness of the mirror frame is defined as the distance from the end surface of the projection to the end surface, and is processed in the process. The planarity of these protrusions is ensured during the process to ensure the accuracy of thickness dimensions.
It effectively reduces the difficulty of measuring and processing thickness and size of the frame structure, improves the flatness and accuracy of the product, ensures the consistency of thickness and size between the front and rear end surfaces, and improves product quality.
Smart Images
Figure CN222232745U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of optical component structures, and more specifically, to a lens frame structure and an optical lens assembly that are convenient for ensuring thickness dimensions. Background Art
[0002] In the prior art, the front and rear end faces of the mirror frame of the car side assembly are usually large flat end faces. The processing indicators of the mirror frame need to ensure the flatness of the front and rear large flat end faces, and also need to pass through the two large flat end faces to ensure the thickness dimension between the front and rear end faces.
[0003] They are all large flat designs, so there are flatness requirements for the entire large flat end surface. This ensures the thickness dimension requirements between the front and rear end surfaces. The problem is that the flatness of the large flat end surface is difficult to ensure, and the thickness dimension between the front and rear end surfaces is even more difficult to ensure, which affects the accuracy of the edge components and the accuracy of the product.
[0004] Therefore, the prior art still needs to be improved and developed. Utility Model Content
[0005] The purpose of the present application is to provide a frame structure and an optical lens set that are easy to ensure the thickness dimension, thereby solving the problem in the prior art that the frame structure adopts a large flat end face, which makes it difficult to ensure the thickness dimension between the front and rear end faces.
[0006] To achieve the above purpose, the technical solution adopted in this application is:
[0007] On the one hand, the present application provides a spectacles frame structure that is convenient for ensuring thickness dimensions, comprising a spectacles frame body, wherein the spectacles frame body has a first end face and a second end face that are oppositely arranged along the axial direction;
[0008] At least one first protrusion is disposed on the first end surface and is arranged around the central axis of the frame body, and the width of the first protrusion in the radial direction is smaller than the outer diameter of the frame body;
[0009] At least one second protrusion is disposed on the second end surface and is arranged around the central axis of the lens frame, and the width of the second protrusion in the radial direction is smaller than the outer diameter of the lens frame;
[0010] The thickness of the lens frame is the distance between the end surface of the first protrusion and the end surface of the second protrusion.
[0011] In an optional embodiment, the first protrusion includes: a first outer protruding ring platform, the first outer protruding ring platform is completely arranged around the central axis of the frame body;
[0012] The second raised portion includes: a second outer raised ring platform, and the second outer raised ring platform is completely arranged around the central axis of the lens frame body.
[0013] In an optional embodiment, the first protruding portion further includes: a first inner convex ring platform, the first inner convex ring platform and the first outer convex ring platform are coaxially arranged on the same end surface of the lens frame body;
[0014] The second raised portion further includes: a second inner convex ring platform, which is coaxially arranged on the same end surface of the lens frame body with the second outer convex ring platform.
[0015] In an optional embodiment, the width of the first outer convex ring platform along the radial direction is equal to the width of the second outer convex ring platform along the radial direction;
[0016] The width of the first inner convex ring platform along the radial direction is equal to the width of the second inner convex ring platform along the radial direction.
[0017] In an optional embodiment, a plurality of glue dispensing holes are arranged on the outer circular side wall of the lens frame body, and the plurality of glue dispensing holes are symmetrically distributed around the central axis of the lens frame body.
[0018] In an optional embodiment, a surrounding glue groove is provided on the inner wall of the frame body;
[0019] The glue groove is connected to a plurality of glue dispensing holes.
[0020] In an optional embodiment, a lens mounting hole is provided on the first end surface or the second end surface;
[0021] The lens mounting hole is used to connect the optical lens by using the first end surface as a mounting reference surface.
[0022] In an optional embodiment, a threaded connection hole is provided at one end of the frame body, and the threaded connection hole is used for threaded connection with a processing tool, so that there is a gap between the end face of the frame body and the processing tool for processing the end face.
[0023] In an optional embodiment, a threaded positioning portion is provided at one axial end of the threaded connection hole, and the threaded positioning portion limits the position where the processing tool is connected to the threaded connection hole by abutting against the processing tool.
[0024] On the other hand, the present application also provides an optical lens set, which includes an optical lens and a lens frame structure as described above that is convenient for ensuring the thickness dimension;
[0025] An adhesive layer is provided on the inner wall of the lens mounting hole of the lens frame structure, and the optical lens is fixed in the lens mounting hole through the adhesive layer.
[0026] The present application provides a frame structure and an optical lens set that are convenient for ensuring the thickness dimension. The beneficial effects are at least that: a first protrusion with a smaller width and surrounding the frame body is provided on the first end surface, and a second protrusion with a smaller width and surrounding the frame body is provided on the second end surface. When measuring the thickness of the frame structure, the first protrusion and the second protrusion are respectively used as two detection surfaces of the thickness of the frame structure, so that the thickness of the frame body is the distance between the end surface of the first protrusion and the end surface of the second protrusion. Since the width of the surface of the first protrusion and the second protrusion is smaller than the entire first end surface or the entire second end surface of the frame structure, the original entire first end surface and the entire second end surface as the thickness of the frame structure are converted into the thickness of the frame structure from the surface of the first protrusion to the surface of the second protrusion. Since the width of the surface (end surface) of the first protrusion and the surface (end surface) of the second protrusion are both small, it is easy to ensure the flatness of the end surface during the processing, and then ensure the thickness dimension between the front and rear end surfaces, effectively ensuring the product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0028] Figure 1 A cross-sectional view of a frame structure that facilitates ensuring thickness dimensions provided in an embodiment of the present application;
[0029] Figure 2 A schematic structural diagram of a frame structure that facilitates ensuring thickness dimensions provided in an embodiment of the present application;
[0030] Figure 3 A partial cross-sectional view of an optical lens assembly provided in an embodiment of the present application;
[0031] Figure 4 An exploded view of an optical lens assembly provided in an embodiment of the present application during processing and clamping;
[0032] Figure 5 A partial cross-sectional view of a frame structure during turning that facilitates ensuring thickness dimensions, provided in an embodiment of the present application.
[0033] Among them, the reference numerals in the figure are:
[0034] 100, lens frame; 110, first end face; 120, second end face; 130, glue dispensing hole; 140, glue groove; 150, lens mounting hole; 160, threaded connection hole; 170, threaded positioning portion; 200, first raised portion; 210, first outer convex ring platform; 220, first inner convex ring platform; 300, second raised portion; 310, second outer convex ring platform; 320, second inner convex ring platform; 400, optical lens; 500, processing tooling; 510, connecting screw; 520, support rod. DETAILED DESCRIPTION
[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0036] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly or indirectly located on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are only for the convenience of description and cannot be understood as limitations on the present technical solution. The terms "first" and "second" are only used for the convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.
[0037] Embodiment 1
[0038] See also Figure 1 , Figure 2This embodiment proposes a frame structure that is convenient for ensuring the thickness dimension, including a frame body 100, the frame body 100 having a first end face 110 and a second end face 120 that are oppositely arranged along the axial direction. For the convenience of structural description, the first end face 110 is used as the front surface, and the second end face 120 is used as the rear surface. At least one first protrusion 200 is arranged around the central axis of the frame body 100 on the first end face 110, and the width of the first protrusion 200 along the radial direction is smaller than the outer diameter of the frame body 100; in the specific structure, the first protrusion 200 is protrudingly arranged on the front surface of the frame body 100, and the width of the first protrusion 200 only occupies a small part of the radius of the entire first end face 110 when the first end face 110 is regarded as a large plane. At least one second protrusion 300 is arranged on the second end face 120 and is arranged around the central axis of the frame body 100. The radial width of the second protrusion 300 is smaller than the outer diameter of the frame body 100. In the specific structure, the second protrusion 300 is protruding on the rear surface of the frame body 100. Considering the second end face 120 as a large plane, the width of the second protrusion 300 only occupies a small part of the radius of the entire second end face 120. The front surface (end surface) of the first protrusion 200 and the rear surface (end surface) of the second protrusion 300 are respectively used as two detection surfaces of the thickness of the frame structure, so that the thickness of the frame body 100 is the distance between the end surface of the first protrusion 200 and the end surface of the second protrusion 300; since the width of the surface of the first protrusion 200 and the second protrusion 300 is smaller than the entire first end surface 110 or the entire second end surface 120 of the frame structure, the original entire first end surface 110 and the entire second end surface 120 as the thickness of the frame structure is converted to the surface of the first protrusion 200 to the surface of the second protrusion 300 as the thickness of the frame structure. During processing, the flatness of the first protrusion 200 on the first end surface 110 and the second protrusion 300 on the second end surface 120 is ensured, and then the front surface of the first protrusion 200 on the first end surface 110 (front end surface) and the rear surface of the second protrusion 300 on the second end surface 120 are used as references to ensure the size thickness of the entire frame structure.
[0039] The frame structure in this embodiment, which is convenient for ensuring the thickness dimension, designs the original large flat end face into a partially protruding end face. It only needs to ensure the flatness of the small-sized protruding end face during the processing, and use this as a reference to ensure the size and thickness of the entire frame structure. There is no need to ensure the flatness of the large flat end face and the thickness dimension between the two large flat end faces, which reduces the difficulty and efficiency of the turning process and greatly reduces the impact of the flatness problem of the front and rear end faces on product accuracy.
[0040] See also Figure 1 , Figure 2, further, in this embodiment, the first raised portion 200 specifically includes: a first outer convex ring platform 210, which is completely arranged around the central axis of the lens frame 100. In the specific structure, the first outer convex ring platform 210 adopts a full-circle annular structure, which can be arranged at the outermost edge of the first end face 110 of the lens frame 100 and protrudes forward. The surface of the first outer convex ring platform 210 of the full circle is complete in the circumferential direction, does not damage the turning tool, and is convenient for turning processing. The front surface of the complete first outer convex ring platform 210 can also better ensure the surface quality during the processing process, and is also convenient for positioning and assembly during use. The corresponding second raised portion 300 specifically includes: a second outer convex ring platform 310, which is completely arranged around the central axis of the lens frame 100; the second outer convex ring platform 310 adopts a full-circle annular structure, which can be arranged at the outermost edge of the second end face 120 of the lens frame 100 and protrudes backward.
[0041] It is easy to imagine that the first protrusion 200 and the second protrusion 300 can also be a plurality of bosses, and the plurality of bosses are spaced around the central axis of the frame body 100, and the formed structure can also solve the technical problem.
[0042] See also Figure 1 , Figure 2 Further, the first raised portion 200 specifically includes: a first inner convex ring platform 220, and the first inner convex ring platform 220 and the first outer convex ring platform 210 are concentrically arranged on the same end face of the lens frame 100. The first inner convex ring platform 220 is located on the radial inner side of the first inner convex ring platform 220. Through the structure of the first outer convex ring platform 210 and the first inner convex ring platform 220, a concave-convex structure is formed on the first end face 110, which can increase the structural strength of the entire lens frame 100. If only the first outer convex ring platform 210 is used, the edge is obviously thick and the inner position is relatively thin, so that the structural strength of the lens frame 100 is reduced and the supporting performance is deteriorated. By setting the first inner convex ring platform 220 and the first outer convex ring platform 210 for use in conjunction, while reducing the surface size of the thickness detection reference surface, the structural strength of the lens frame 100 can also be guaranteed, making the lens frame 100 more stable during use. In addition, the front surface of the first inner convex ring stage 220 can also be used as a thickness detection surface to ensure the thickness of the lens frame 100. The corresponding second raised portion 300 also includes: a second inner convex ring stage 320, which is concentrically arranged on the same end surface of the lens frame 100 with the second outer convex ring stage 310. The second inner convex ring stage 320 cooperates with the second outer convex ring stage 310 to achieve the above-mentioned functions of the first inner convex ring stage 220 and the first outer convex ring stage 210.
[0043] If there is an over-tolerance between the first outer convex ring platform 210 and the second outer convex ring platform 310 and the size thickness of the mirror frame structure cannot be guaranteed (for example, the thickness dimension between the first outer convex ring platform 210 and the second outer convex ring platform 310 is less than the product index requirement), the thickness of the mirror frame structure can be guaranteed by ensuring the flatness of the first inner convex ring platform 220 and the second inner convex ring platform 320 of the inner ring, thereby meeting the product index requirements. In this way, by setting multiple layers of convex ring platforms in the radial inner and outer directions, one of them can be selected as the thickness standard for processing, ensuring the thickness dimension, and facilitating subsequent assembly. It is beneficial to the processing and rework of the product.
[0044] It is easy to imagine that the first inner convex ring platform and the second inner convex ring platform can also be replaced by a structure in which multiple convex platforms are arranged around the central axis of the lens frame body 100 at intervals, which can also solve the technical problem.
[0045] Furthermore, the radial width of the first outer convex ring platform 210 is equal to the radial width of the second outer convex ring platform 310. The radial width of the first inner convex ring platform 220 is equal to the radial width of the second inner convex ring platform 320. By adopting a structure with equal widths, the thickness reference planes of the front and rear ends of the frame structure are kept consistent. During assembly, the forces on the two ends are relatively uniform, ensuring good performance consistency of the front and rear ends.
[0046] See also Figure 1 , Figure 2 , Figure 3 Furthermore, in this embodiment, a plurality of glue dispensing holes 130 are arranged on the outer circumferential side wall of the frame body 100, and the plurality of glue dispensing holes 130 are symmetrically distributed around the central axis of the frame body 100. The glue dispensing holes 130 are evenly and symmetrically distributed around the frame body 100, and the optical lens 400 and the frame body 100 are fixed by glue dispensing, so as to ensure that the tensile stress generated by the adhesive on the optical lens 400 is evenly and symmetrically, and the lens is evenly stressed, thereby ensuring the surface shape and optical axis of the optical lens 400.
[0047] See also Figure 1 , Figure 2 , Figure 3Furthermore, a surrounding glue groove 140 is provided on the inner wall of the frame body 100 in this embodiment, and the glue groove 140 is connected to a plurality of glue dispensing holes 130. All the surrounding glue dispensing holes 130 are connected through the glue groove 140. After the optical lens 400 is assembled on the frame body 100, the groove formed by the glue groove 140 surrounds the outer wall of the optical lens 400; the adhesive flows from the glue dispensing hole 130 into the glue groove 140, and flows evenly along the glue groove 140, thereby increasing the bonding area, and it is possible that the optical lens 400 and the frame body 100 can be firmly bonded without completely filling the glue groove 140. The cross section of the glue groove 140 is larger than the cross section of the glue dispensing hole 130, so that the bonding area can be increased by accommodating the adhesive, so that the optical lens 400 can be bonded more firmly. In addition, a space is provided for accommodating the excess glue flowing out of the glue dispensing hole 130 , so that the excess glue is not easy to overflow from the glue groove 140 and affect the light transmittance of the optical lens 400 .
[0048] See also Figure 2 , Figure 3 , Figure 4 Further, in the present embodiment, a lens mounting hole 150 is provided on the first end face 110 or the second end face 120, and the lens mounting hole 150 is used to connect the optical lens 400 by using the first end face 110 as the mounting reference surface. Usually, the installation of the optical lens 400 requires limited assembly through a bearing platform, so the frame structure is usually provided with a bearing platform. However, in the present frame structure, there is no bearing platform designed on the frame body 100, and the optical lens 400 is directly installed in the lens mounting hole 150 of the frame body 100 by using the plane of the first end face 110 as the reference. It is particularly suitable for installing the optical lens 400 when the frame body 100 is small in size and insufficient in space, thereby solving the problem that there is no space for designing a bearing platform for the small-sized frame body 100. And installing the optical lens 400 by using the first end face 110 as the mounting reference surface can well ensure that the relative inclination between the central axis of the optical lens 400 and the frame body 100 is small in the absence of a bearing platform, thereby ensuring the optical index of the car edge component.
[0049] See also Figure 4 , Figure 5Further, a threaded hole 160 may be provided at one end of the lens frame 100 in the present embodiment, and the threaded hole 160 is used for threaded connection with the processing tool 500, so that there is a gap between the end face of the lens frame 100 and the processing tool 500 for processing the end face. In the specific structure, the threaded hole 160 may be provided on the second end face 120 of the lens frame 100. During the processing of the lens frame structure, the threaded hole 160 is used for threaded connection with the processing tool 500 and then fixed on the centering car, so that the turning tool processes the structure on the first end face 110 of the lens frame 100, the outer cylindrical side surface, and the second end face 120 of the lens frame 100 in this process. Thus, the turning processing of the front and rear end faces and the outer cylindrical side surface is completed by one fixation, without changing the clamp, optimizing the process flow and improving the processing efficiency. The same positioning reference is used for one clamping and positioning, so that during the processing, the parallelism between the front and rear end faces and the verticality accuracy can be well guaranteed to be more stable.
[0050] See also Figure 4 , Figure 5 Furthermore, a threaded positioning portion 170 may be provided at one axial end of the threaded connection hole 160, and the threaded positioning portion 170 limits the position where the processing tool 500 is connected to the threaded connection hole 160 by abutting against the processing tool 500. The processing tool 500 has a connecting screw 510, and the processing tool 500 may also be provided with a support rod 520 connected to the connecting screw 510, the support rod 520 extends in the axial direction, and the connecting screw 510 is provided at the end of the support rod 520. The clearance of the processing end face formed by such a structure can effectively avoid interference when the turning tool processes the rear end face. When the threaded connection hole 160 is connected to the connecting screw 510, the threaded positioning portion 170 can be abutted against the processing tooling 500 to limit the position of the connecting screw 510 in the threaded connection hole 160. Not only can the lens frame 100 be stably fixed on the connecting screw 510 through the threaded connection hole 160, but the threaded positioning portion 170 can also realize the axial reference during the turning process, thereby ensuring the dimensional stability of the axial length of the lens frame 100 during the turning process.
[0051] Embodiment 2
[0052] See also Figure 3 , Figure 4 The present application also proposes an optical lens set, which includes an optical lens 400 and a frame structure as described above that is convenient for ensuring the thickness dimension; an adhesive layer is provided on the inner wall of the lens mounting hole 150 of the frame structure, and the adhesive layer can be formed by filling the glue groove 140 with adhesive, and the optical lens 400 is fixed in the lens mounting hole 150 through the adhesive layer.
[0053] In summary, the present application proposes a frame structure that is easy to ensure the thickness dimension, by opening a first protrusion with a smaller width and surrounding the frame body on the first end face, and opening a second protrusion with a smaller width and surrounding the frame body on the second end face. The thickness of the frame body is made to be the distance between the end face of the first protrusion and the end face of the second protrusion. Since the width of the surface of the first protrusion and the second protrusion is smaller than the entire first end face or the entire second end face of the frame structure, it is easy to ensure the flatness of the end face during the processing, and then ensure the thickness dimension between the front and rear end faces, effectively ensuring the product quality. The lens and the frame body are fixed by dispensing glue to ensure that the tensile stress generated by the adhesive on the optical lens is uniform and symmetrical, the lens is uniformly stressed, and the surface shape and optical axis of the optical lens are guaranteed. The installation design of the optical lens does not design a bearing platform, which is particularly suitable for realizing the installation of optical lenses when the frame body is small in size and space is insufficient. The threaded connection hole is used to be threadedly connected with the processing tool and then fixed on the centering lathe, so that the turning tool can process the structure on the first end face of the lens frame, the outer cylindrical side surface, and the second end face of the lens frame in this process, thereby improving the processing efficiency and processing accuracy.
[0054] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A frame structure that is convenient for ensuring thickness dimensions, characterized in that: The lens frame comprises a lens frame having a first end surface and a second end surface which are arranged opposite to each other in the axial direction; At least one first protrusion is disposed on the first end surface and is arranged around the central axis of the lens frame, and the width of the first protrusion in the radial direction is smaller than the outer diameter of the lens frame; The second end surface is provided with at least one second protrusion arranged around the central axis of the lens frame, and the width of the second protrusion in the radial direction is smaller than the outer diameter of the lens frame; The thickness of the lens frame is the distance between the end surface of the first protrusion and the end surface of the second protrusion.
2. The frame structure for ensuring thickness as claimed in claim 1, characterized in that: The first protrusion comprises: a first outer protrusion ring platform, the first outer protrusion ring platform completely surrounds the central axis of the lens frame body; The second protrusion includes: a second outer protrusion ring platform, and the second outer protrusion ring platform is completely arranged around the central axis of the lens frame body.
3. The frame structure for ensuring thickness as claimed in claim 2, characterized in that: The first raised portion further includes: a first inner convex ring platform, the first inner convex ring platform and the first outer convex ring platform are concentrically arranged on the same end surface of the lens frame body; The second raised portion further includes: a second inner convex ring platform, and the second inner convex ring platform and the second outer convex ring platform are coaxially arranged on the same end surface of the lens frame body.
4. The frame structure for ensuring thickness as claimed in claim 3, characterized in that: The width of the first outer convex ring platform along the radial direction is equal to the width of the second outer convex ring platform along the radial direction; The width of the first inner convex ring platform along the radial direction is equal to the width of the second inner convex ring platform along the radial direction.
5. The frame structure for ensuring thickness as claimed in any one of claims 1 to 4, characterized in that: A plurality of glue dispensing holes are arranged on the outer circular side wall of the lens frame, and the plurality of glue dispensing holes are symmetrically distributed around the central axis of the lens frame.
6. The frame structure for ensuring thickness as claimed in claim 5, characterized in that: The inner wall of the frame is provided with a surrounding glue groove; The glue groove is connected to a plurality of the glue dispensing holes.
7. A frame structure for ensuring thickness as claimed in any one of claims 1 to 4, characterized in that: A lens mounting hole is provided on the first end surface or the second end surface; The lens mounting hole is used to connect the optical lens by using the first end surface as a mounting reference surface.
8. The frame structure for ensuring thickness as claimed in any one of claims 1 to 4, characterized in that: A threaded connection hole is provided at one end of the lens frame, and the threaded connection hole is used for threaded connection with a processing tool, so that a gap for processing the end surface exists between the end surface of the lens frame and the processing tool.
9. The frame structure for ensuring thickness as claimed in claim 8, characterized in that: A threaded positioning portion is disposed at one axial end of the threaded connection hole, and the threaded positioning portion limits the position at which the processing tool is connected to the threaded connection hole by abutting against the processing tool.
10. An optical lens assembly, characterized in that: It comprises an optical lens and a frame structure for ensuring thickness as described in any one of claims 1 to 9; An adhesive layer is provided on the inner wall of the lens mounting hole of the frame structure, and the optical lens is fixed in the lens mounting hole through the adhesive layer.