Jig for installing lens pressing ring
By designing the fixture body and connecting components, the problem of the outer groove of the lens retainer affecting the aesthetics was solved, and the lens retainer was tightened with a torque wrench while ensuring the appearance of the lens and the quality of the fastening.
Patent Information
- Application Number
- CN202520197894.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-08
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-02-08
AI Technical Summary
In the prior art, the groove is set on the outer end face of the lens, and the torque is set on the outer side of the lens, but the torque cannot be set on the outer side of the lens retaining ring, resulting in an unsightly lens and making it impossible to effectively tighten it with a torque wrench.
Design a fixture, including a fixture body and a connecting component. The fixture body has an arc-shaped sidewall and a protrusion. The arc-shaped sidewall mates with a lens retainer ring. The connecting component is used to transmit torque. The rotation and locking of the lens retainer ring are achieved through the arc-shaped sidewall and the protrusion.
This technology enables the lens retainer to be tightened with a torque wrench when a groove is provided inside the lens retainer, ensuring a beautiful lens appearance and consistent locking torque, thereby improving the yield of finished products.
Smart Images
Figure CN223763109U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lens assembly technology, and in particular to a fixture for installing lens retaining rings. Background Technology
[0002] In the lens structure, the lens retainer ring's function is to press and fix the lens element within the lens module. The lens retainer ring is typically connected to the lens module via a threaded connection. Currently, it can be secured to the lens module using a torque wrench, or it can be tightened manually.
[0003] Compared to manually tightening the lens retainer, using a torque wrench to secure the lens retainer to the lens module is preferable, ensuring consistent tightening torque and improving product yield. However, currently, rotating the lens retainer with a torque wrench requires a groove on the outer end face of the retainer, allowing the torque wrench's corresponding structure to engage and rotate the retainer. This groove on the outer end face is unsightly when the lens is exposed, failing to meet customer requirements. While placing the groove on the inner end face of the retainer maintains a neat appearance, the torque wrench cannot operate on this groove, necessitating manual tightening of the retainer for lens assembly. Utility Model Content
[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a fixture for installing lens retaining rings, suitable for tightening lens retaining rings of a specific structure while ensuring that the appearance of the lens retaining ring is not damaged.
[0005] According to an embodiment of the present invention, a fixture for mounting a lens retainer includes: a fixture body, the fixture body being used to mount a lens retainer, the fixture body having a first plane, the fixture body having an arc-shaped sidewall, the axis of the arc-shaped sidewall being perpendicular to the first plane, the arc corresponding to the arc-shaped sidewall being less than or equal to π, the inner sidewall of the arc-shaped sidewall having a protrusion, and the protrusion being adjacent to the circumferential end face of the arc-shaped sidewall;
[0006] A connecting component is fixed to the fixture body and is used to connect with a tool that provides torque.
[0007] The fixture for installing a lens retainer according to the embodiments of the present invention has at least the following beneficial effects: when the slot of the lens retainer is located on the inner end face of the lens retainer, the outer end face of the lens retainer can contact the first plane, the slot is aligned with the protrusion, and the lens retainer can be screwed in from the opening of the arc-shaped sidewall with the protrusion as the center until the outer wall surface of the lens retainer contacts the inner wall surface of the arc-shaped sidewall; the tool that provides torque drives the fixture body to rotate through the connecting component, and the cooperation between the protrusion and the slot can apply torque to the lens retainer, thereby completing the locking of the lens retainer and the lens module.
[0008] According to some embodiments of the present invention, the connection between the protrusion and the arc-shaped sidewall is provided with a rounded corner, and the rounded corner is located on the end face away from the arc-shaped sidewall.
[0009] According to some embodiments of the present invention, the plane coplanar with the end face of the convex part and the arc-shaped sidewall is a second plane, and the edge of the convex part located in the second plane is chamfered.
[0010] According to some embodiments of the present invention, the fixture body is provided with an avoidance groove, and the opening of the avoidance groove is located on the first plane.
[0011] According to some embodiments of the present invention, the connecting assembly includes a plate and a transmission rod, the transmission rod is disposed on the plate, the axis of the transmission rod is perpendicular to the surface of the plate, and the plate is connected to the fixture body.
[0012] According to some embodiments of the present invention, the plate body and the fixture body are connected by a detachable structure.
[0013] According to some embodiments of the present invention, the fixture body is provided with a plurality of threaded holes, the number of which is at least three, and the plurality of threaded holes are distributed circumferentially along the arc-shaped sidewall. The plate is disposed on the opposite side of the first plane, and the plate is connected to the fixture body by bolts, the bolts passing through the plate and being screwed into the threaded holes.
[0014] According to some embodiments of the present invention, the screw-in end of the bolt does not exceed the first plane.
[0015] According to some embodiments of the present invention, the transmission rod is provided with an annular groove, and the annular groove is coaxial with the transmission rod.
[0016] According to some embodiments of this utility model, the cross-section of the transmission rod is a regular hexagon.
[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:
[0019] Figure 1 This is a schematic diagram of the structure of the fixture for mounting the lens retainer according to an embodiment of the present invention;
[0020] Figure 2 This is a partially enlarged schematic diagram of the fixture used for mounting the lens retainer in an embodiment of this utility model;
[0021] Figure 3 This is a schematic diagram of a fixture for mounting the lens retainer screwed into the lens retainer according to an embodiment of the present invention;
[0022] Figure 4 This is a cross-sectional view of a fixture for mounting a lens retainer according to an embodiment of the present invention;
[0023] Figure 5 This is an exploded view of the fixture used for mounting the lens retainer according to an embodiment of the present invention;
[0024] Figure 6 This is a cross-sectional view of the fixture and lens used for mounting the lens retainer according to an embodiment of the present invention.
[0025] Icon labels:
[0026] The fixture body 100, first plane 101, rounded corner 102, clearance groove 103, arc-shaped side wall 110, protrusion 120, chamfer 121, connecting assembly 200, plate 210, transmission rod 220, annular groove 221, bolt 230, lens retaining ring 300, and groove 310. Detailed Implementation
[0027] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0028] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0029] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.
[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0031] As described in the background section, if the notch is located on the inner end face of the lens retainer, conventional methods cannot be used to connect the torque wrench to the lens retainer, and the torque wrench cannot apply torque to the lens retainer. It should be understood that the lens retainer is connected to the lens module; its outward-facing side is the outer end face of the lens retainer, and the side connecting the lens retainer to the lens module is the inner end face. Due to the interference from the lens module, the torque wrench can only be connected to the lens retainer on the outer side.
[0032] To ensure the aesthetics of the lens retainer, no grooves or other structures that compromise surface integrity should be present on its outer end face. Since the lens retainer is circular, a torque wrench cannot apply torque without a groove. Conversely, a torque wrench cannot clamp the sidewalls of the lens retainer; applying torque would scratch these sidewalls, also compromising its appearance.
[0033] It's important to understand that the lens retainer ring secures the lens elements. Insufficient torque applied to the retainer ring can cause the lens elements to loosen, creating gaps between the lens elements and leading to a decrease in the lens's optical performance. Therefore, to avoid lens quality issues, manual tightening of the lens retainer ring is avoided as much as possible.
[0034] Reference Figure 1 As shown, an embodiment of the present invention provides a fixture for mounting a lens retainer, comprising a fixture body 100 and a connecting assembly 200.
[0035] Correspondingly, a groove 310 is provided on the inner end face of the lens retainer 300.
[0036] The jig body 100 is used to mount the lens clamping ring. The jig body 100 has a first plane 101 and an arc-shaped sidewall 110. The axis of the arc-shaped sidewall 110 is perpendicular to the first plane 101. The arc of the arc-shaped sidewall 110 is less than or equal to π. The inner sidewall of the arc-shaped sidewall 110 has a protrusion 120, and the protrusion 120 is adjacent to the circumferential end face of the arc-shaped sidewall 110.
[0037] It's important to understand that the maximum curvature of the curved sidewall 110 should be equal to π, meaning the curved sidewall 110 is semi-circular. If the curvature of the curved sidewall 110 is greater than π, the opening size of the curved sidewall 110 will be smaller than its inner diameter, preventing the lens retainer from screwing in through the opening. Conversely, the curvature of the curved sidewall 110 should not be too small. A small curvature results in a short arc length, leading to a small contact area between the curved sidewall 110 and the lens retainer, causing a severe imbalance in torque transmission to the lens retainer. Preferably, the curvature of the curved sidewall 110 should be greater than π / 2, and ideally, the curvature should be equal to π, i.e., a semi-circular curved sidewall 110.
[0038] Preferably, in order to ensure a stable fit between the arc-shaped sidewall 110 and the lens retaining ring, the inner diameter of the arc-shaped sidewall 110 is basically the same as the outer diameter of the lens retaining ring, and the lower tolerance of the inner diameter of the arc-shaped sidewall 110 is controlled to be +0.01 and the upper tolerance is +0.03, which is a clearance fit.
[0039] When it is necessary to tighten the lens retaining ring, such as Figure 3 As shown, first, the outer end face of the lens retainer is placed against the first plane 101. Then, the groove on the lens retainer is aligned with the protrusion 120, and the lens retainer is screwed into the opening of the arc-shaped sidewall 110 with the protrusion 120 as the rotation center of the lens retainer, until the lens retainer is coaxial with the arc-shaped sidewall 110 and the inner sidewall of the arc-shaped sidewall 110 is in contact with the sidewall of the lens retainer. At this time, the protrusion 120 is also engaged in the groove. Then, the lens retainer can be placed on the lens module containing the lens. In the above-described mating structure of the lens retainer and the arc-shaped sidewall 110, the arc-shaped sidewall 110 is similar to a sleeve, fitted over the lens retainer, and the torque is transmitted through the engagement of the protrusion 120 and the groove.
[0040] To improve the stability of the fit between the protrusion 120 and the groove, the width of the groove is 0.1 mm larger than the width of the protrusion 120, minimizing the gap between the protrusion 120 and the sidewall of the groove and ensuring stable rotation. At the same time, the 0.1 mm difference in groove width also ensures that the protrusion 120 can smoothly engage with the groove.
[0041] The connecting component 200 is fixed to the fixture body 100 and is used to connect with a tool that provides torque.
[0042] One tool for providing torque is a torque wrench, which engages with the connecting assembly 200. Since the connecting assembly 200 is not part of the lens, there is no need to consider whether the transmission structure between the torque wrench and the connecting assembly 200 will damage the appearance of the connecting assembly 200; any transmission structure can be used. For example, the connecting assembly 200 can have a connecting part with a specific structure, such as a rod with a triangular cross-section, and the torque wrench can have a corresponding structure that can be fitted onto the connecting part, such as a sleeve with a triangular cross-section.
[0043] Reference Figure 2 As shown, it can be understood that the connection between the protrusion 120 and the arcuate sidewall 110 is provided with a rounded corner 102, and the rounded corner 102 is located on the end face away from the arcuate sidewall 110.
[0044] The function of the rounded corner 102 is to avoid the edge of the groove of the lens retainer ring, so as to prevent the edge of the groove from rubbing against the protrusion 120 and the arc-shaped sidewall 110 when the fixture body 100 rotates, which would cause paint wear or scratches.
[0045] It should be understood that, taking the direction towards the first plane 101 as the frontal view, the direction from one end of the arc-shaped sidewall 110 with the protrusion 120 to the other end is counterclockwise. Of course, there is also a structure where the direction from one end of the arc-shaped sidewall 110 with the protrusion 120 to the other end is clockwise. It should be understood that there are two types of fixture bodies 100 used to tighten the lens retaining ring in different directions, such as clockwise and counterclockwise tightening, the tightening direction depending on the thread direction of the lens retaining ring. Alternatively, the two types of fixture bodies 100 can be used separately for tightening the lens retaining ring (assembly) and for loosening the lens retaining ring (disassembly). It should be understood that when the fixture body 100 tightens the lens retaining ring, it should be done in the frontal view, from one end of the arc-shaped sidewall 110 with the protrusion 120 to the other end.
[0046] It is understandable that the plane coplanar with the end face of the protrusion 120 and the arc-shaped sidewall 110 is the second plane, and the edge of the protrusion 120 located in the second plane is provided with a chamfer 121.
[0047] The chamfer 121 serves to prevent the protrusion 120 from scratching the side wall of the groove, and also to ensure that the appearance of the lens retainer is not damaged. For example, when the lens retainer is screwed into the curved side wall 110, the protrusion 120 is aligned with the groove. The lens retainer needs to be screwed in with the protrusion 120 as the center until it is coaxial with the curved side wall 110. Therefore, the chamfer 121 is provided to prevent the lens retainer from being scratched when screwed in.
[0048] Reference Figure 4As shown, it can be understood that the fixture body 100 is provided with a relief groove 103, and the opening of the relief groove 103 is located on the first plane 101.
[0049] In some shots, such as Figure 6 As shown, the surface of the lens may protrude to the end face of the lens retainer, so the first plane 101 may come into contact with the lens and scratch it. A clearance groove 103 is provided on the fixture body 100 to accommodate the protruding part of the lens; the opening of the clearance groove 103 only needs to be located on the first plane 101. It should be understood that even if the lens does not protrude to the end face of the lens retainer, the presence of the clearance groove 103 increases the distance between the lens and the fixture body 100, preventing dust from falling onto the lens. Therefore, in the preferred structure, the clearance groove 103 can be retained.
[0050] It is understood that the connecting assembly 200 includes a plate 210 and a transmission rod 220. The transmission rod 220 is disposed on the plate 210, and the axis of the transmission rod 220 is perpendicular to the surface of the plate 210. The plate 210 is connected to the fixture body 100.
[0051] The torque wrench is used to connect with the transmission rod 220, and transmits torque to the plate 210 through the transmission rod 220, and then to the fixture body 100. The lens retainer is rotated by the snap-fit of the protrusion 120 and the slot.
[0052] It should be understood that the plate 210, the transmission rod 220 and the fixture body 100 can be an integral structure or two separate parts.
[0053] Preferably, the plate 210 and the fixture body 100 are connected by a detachable structure.
[0054] The plate 210 can be removed from the fixture body 100, making it easy to replace the fixture body 100 with different sizes and improving interchangeability. One type of detachable structure uses a bolt connection.
[0055] For example, refer to Figure 5 As shown, it can be understood that the fixture body 100 is provided with multiple threaded holes, the number of which is at least three. The multiple threaded holes are distributed circumferentially along the arc-shaped sidewall 110. The plate 210 is located on the opposite side of the first plane 101. The plate 210 and the fixture body 100 are connected by bolts 230. The bolts 230 pass through the plate 210 and are screwed into the threaded holes.
[0056] At least three threaded holes are provided and are distributed circumferentially along the arc-shaped sidewall 110, preferably evenly distributed, so as to evenly transmit the torque of the torque wrench to the fixture body 100.
[0057] Understandably, the screw-in end of bolt 230 does not extend beyond the first plane 101 to reduce the risk of bolt 230 scratching the lens. This also reduces the risk of bolt 230 scratching the surface of the lens retaining ring.
[0058] It is understood that the transmission rod 220 is provided with an annular groove 221, which is coaxial with the transmission rod 220. Preferably, the cross-section of the transmission rod 220 is a regular hexagon.
[0059] Typically, torque screwdrivers have hexagonal socket bits. The cross-section of the drive rod 220 can be correspondingly set to a regular hexagon to match the hexagonal socket bit. The drive rod 220 can be made of a magnetic material, such as iron. A magnet can be placed inside the hexagonal socket bit to attract the drive rod 220 and prevent the fixture body 100 from falling off the torque screwdriver. Although magnetic attraction reduces the probability of the fixture body 100 falling off, it can still detach from the torque screwdriver under significant external force. An annular groove 221 is provided on the drive rod 220, and a steel ball is placed inside the hexagonal socket bit. When the hexagonal socket bit is fitted onto the drive rod 220, the steel ball can be engaged in the annular groove 221. This structure prevents the fixture body 100 from falling off the torque screwdriver, even under significant external force.
[0060] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A jig for mounting a lens retaining ring, characterized by, The utility model relates to a lens ring pressing tool, which comprises a tool body (100) for sleeving a lens ring, the tool body (100) having a first plane (101), the tool body (100) being provided with an arc-shaped side wall (110) with an axis perpendicular to the first plane (101), the arc-shaped side wall (110) corresponding to an arc less than or equal to pi, the inner side wall surface of the arc-shaped side wall (110) being provided with a convex part (120) abutting an end surface in the circumferential direction of the arc-shaped side wall (110), and a connecting assembly (200) fixed to the tool body (100) for being connected to a tool providing torque. The connecting part (120) and the arc-shaped side wall (110) are provided with a round corner (102) at the connecting part, and the round corner (102) is located on the side away from the end surface of the arc-shaped side wall (110). The connecting part (120) and the arc-shaped side wall (110) are provided with a round corner (102) at the connecting part, and the round corner (102) is located on the side away from the end surface of the arc-shaped side wall (110).
2. The jig for mounting a lens pressure ring according to claim 1, wherein The connecting part (120) and the arc-shaped side wall (110) are provided with a round corner (102) at the connecting part, and the round corner (102) is located on the side away from the end surface of the arc-shaped side wall (110).
3. The jig for mounting a lens pressure ring according to claim 1, wherein The tool body (100) is provided with an avoiding groove (103), and the opening of the avoiding groove (103) is located on the first plane (101).
4. The jig for mounting a lens pressure ring according to claim 1, wherein The connecting assembly (200) comprises a plate body (210) and a transmission rod (220), the transmission rod (220) is arranged on the plate body (210), the axis of the transmission rod (220) is perpendicular to the surface of the plate body (210), and the plate body (210) is connected to the tool body (100).
5. The lens gasket mounting jig according to claim 1, wherein The plate body (210) and the tool body (100) are connected through a detachable structure.
6. The lens gasket mounting jig according to claim 5, wherein The tool body (100) is provided with a plurality of threaded holes, the number of the threaded holes is at least three, the plurality of threaded holes are distributed in the circumferential direction of the arc-shaped side wall (110), the plate body (210) is arranged on the opposite side of the first plane (101), the plate body (210) and the tool body (100) are connected through a bolt (230), the bolt (230) penetrates through the plate body (210) and is screwed into the threaded hole.
7. The lens gasket mounting jig according to claim 6, wherein The screwing end of the bolt (230) does not exceed the first plane (101).
8. The lens gasket mounting jig according to claim 7, wherein The transmission rod (220) is provided with an annular groove (221) coaxial with the transmission rod (220).
9. The lens press ring mounting jig according to claim 5, wherein The cross section of the transmission rod (220) is a regular hexagon.
10. The lens press ring mounting jig according to claim 5, wherein