A lens mounting structure and lens device

Abstract

This utility model belongs to the field of projection technology, and particularly relates to a lens locking structure and lens device. The lens locking structure includes a cylindrical body with a mounting through hole on its wall; a cover plate fixed to the outside of the cylindrical body and covering the mounting through hole; a locking pressure plate disposed inside the mounting through hole, and the locking pressure plate and the mounting through hole cannot rotate relative to each other; an elastic structure disposed between the cover plate and the locking pressure plate; and a connecting structure passing through the cover plate and the mounting through hole. The connecting structure located outside the cylindrical body has a limiting structure. The connecting structure is threadedly connected to the locking pressure plate and fixedly connected to the limiting structure, or the connecting structure is fixedly connected to the locking pressure plate and threadedly connected to the limiting structure. The lens device includes the lens locking structure, with the lens inserted into the cylindrical body. This utility model's lens locking structure and lens device solve the problem that existing lens locking methods easily cause lens misalignment during assembly and debugging, affecting projection resolution.

Description

Technical Field

[0001] This utility model belongs to the field of projection technology, and in particular relates to a lens locking structure and lens device. Background Technology

[0002] Currently, many devices have projection lenses, such as 3D printing equipment and AR headsets. When using them, there is no need for the client to perform analysis and adjustment. You only need to adjust the lens position during assembly and debugging, and then lock and fix the adjusted lens.

[0003] Because there is a gap between the lens and the mounting structure, the traditional locking method uses screws to directly tighten the lens. The drawbacks are that, on the one hand, the lens is prone to tilting during assembly and debugging, which affects the projection resolution of the lens; on the other hand, the screws can easily damage the lens if it moves accidentally. Utility Model Content

[0004] The purpose of this utility model is to provide a lens locking structure and lens device, which aims to solve the problems that existing lens locking methods are prone to causing lens misalignment during assembly and debugging, thus affecting projection resolution, and that screws can damage the lens when the lens moves accidentally.

[0005] This utility model discloses a lens locking structure, which includes:

[0006] A cylindrical body, wherein the cylindrical body has an installation through hole on its cylindrical wall that communicates with the interior of the cylindrical body;

[0007] A cover plate is fixed to the outside of the cylinder and covers the mounting through hole;

[0008] A locking plate is disposed inside the mounting through hole, and the locking plate and the mounting through hole cannot rotate relative to each other;

[0009] An elastic structure is provided between the cover plate and the locking pressure plate to push the locking pressure plate into the cylinder;

[0010] The connecting structure passes through the cover plate and the mounting through hole. The connecting structure located outside the cylinder is provided with a limiting structure. The connecting structure is threadedly connected to the locking pressure plate and fixedly connected to the limiting structure, or the connecting structure is fixedly connected to the locking pressure plate and threadedly connected to the limiting structure.

[0011] As an improvement, the connecting structure and the limiting structure are fixedly connected as an integral structure.

[0012] As an improvement, the integrated structure is a connecting screw, the screw rod of which is the connecting structure and the head of which is the limiting structure.

[0013] As an improvement, an internally threaded cylinder is provided on the side of the locking pressure plate near the cover plate, and the screw of the connecting screw is threadedly connected to the internally threaded cylinder.

[0014] As an improvement, the mounting through hole is set to a rectangular shape, the shape of the locking pressure plate is adapted to the shape of the mounting through hole, and the thickness of the locking pressure plate is less than the thickness of the cylinder wall.

[0015] As an improvement, the cylinder is configured as a circular cylinder, and the locking pressure plate is configured as an arc panel and is coaxially arranged with the cylinder.

[0016] As an improvement, the mounting through hole is located at the middle of the cylinder in the axial direction.

[0017] As an improvement, the connection between the connecting structure and the locking pressure plate is located at the center of the locking pressure plate, and the elastic structure is fitted onto the connecting structure between the cover plate and the locking pressure plate.

[0018] As an improvement, a first fixing structure and a second fixing structure are respectively provided between the cover plate and the cylinder at opposite sides of the mounting through hole.

[0019] This utility model also discloses a lens device, which includes a lens and a lens locking structure. The lens is inserted into the cylindrical body, and the elastic structure pushes the locking plate to press against the outer wall of the lens.

[0020] The beneficial effects achieved by adopting the above technical solution are as follows:

[0021] The lens locking structure of this utility model includes a cylindrical body with a mounting through hole communicating with the interior of the cylindrical body on its wall; a cover plate fixed to the outside of the cylindrical body and covering the mounting through hole; a locking pressure plate disposed inside the mounting through hole, and the locking pressure plate and the mounting through hole cannot rotate relative to each other; an elastic structure disposed between the cover plate and the locking pressure plate for pushing the locking pressure plate to press into the inside of the cylindrical body; and a connecting structure passing through the cover plate and the mounting through hole. The connecting structure located outside the cylindrical body has a limiting structure. The connecting structure is threadedly connected to the locking pressure plate and fixedly connected to the limiting structure, or the connecting structure is fixedly connected to the locking pressure plate and threadedly connected to the limiting structure. The lens device includes a lens and a lens locking structure, with the lens inserted into the cylindrical body. The elastic structure pushes the locking pressure plate to press against the outer wall of the lens.

[0022] Because the connecting structure passes through the cover plate and the mounting through hole, and the portion of the connecting structure located outside the cylinder has a limiting structure, the connecting structure passes through the cover plate and is connected to the locking pressure plate. Furthermore, an elastic structure is provided between the cover plate and the locking pressure plate. The elastic force of the elastic structure allows the limiting structure to fit against the cover plate and pushes the locking pressure plate into the cylinder. Because the connecting structure is threaded to the locking pressure plate and fixedly connected to the limiting structure, or the connecting structure is fixedly connected to the locking pressure plate and threadedly connected to the limiting structure, and there is no inter-hole connection between the locking pressure plate and the mounting through hole. When the connecting structure is threadedly connected to the locking plate and fixedly connected to the limiting structure, rotating the limiting structure causes the connecting structure to rotate, resulting in relative rotation between the connecting structure and the locking plate. This adjusts the distance between the limiting structure and the locking plate. When the connecting structure is fixedly connected to the locking plate and threadedly connected to the limiting structure, rotating the limiting structure causes relative rotation between the limiting structure and the connecting structure. This allows the locking plate to move via the connecting structure, thereby adjusting the distance between the limiting structure and the locking plate.

[0023] During installation, rotate the limiting structure to reduce the distance between the limiting structure and the locking plate, adjust the locking plate to the inside of the mounting through hole, pass the lens through the cylinder and adjust the position of the lens, then rotate the limiting structure again to increase the distance between the limiting structure and the locking plate. The elastic force of the elastic structure can push the locking plate into the cylinder to press it tightly, thus fixing the lens.

[0024] The lens locking structure uses the elastic force of the elastic structure to push the locking plate to fix the lens, which can make the lens more balanced and prevent the lens from tilting and affecting the projection resolution. In addition, if the lens moves accidentally, the elastic structure can act as a buffer between the lens and the locking plate to avoid damaging the lens. This solves the problem that existing lens locking methods are prone to lens tilting during assembly and debugging, which affects the projection resolution. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the lens locking structure of this utility model;

[0026] Figure 2 This is a cross-sectional view of the lens locking structure of this utility model;

[0027] Figure 3 This is an exploded structural diagram of the lens locking structure of this utility model;

[0028] Figure 4 This is a three-dimensional structural diagram of the lens device of this utility model;

[0029] Figure 5 This is a cross-sectional structural schematic diagram of the lens device of this utility model;

[0030] Among them, 10 is the cylinder; 11 is the mounting through hole; 20 is the cover plate; 21 is the first fastening screw; 22 is the second fastening screw; 30 is the locking pressure plate; 31 is the internally threaded cylinder; 40 is the connecting screw; 50 is the cylindrical helical spring; and 60 is the lens. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0032] Figures 1 to 5 This is a schematic diagram of the lens locking structure and lens device of this utility model, wherein, Figure 1 This diagram shows a three-dimensional structural schematic of the lens locking structure of this utility model. Figure 2 This diagram shows a cross-sectional view of the lens locking structure of this invention. Figure 3 An exploded view of the lens locking structure of this utility model is shown. Figure 4 A three-dimensional structural schematic diagram of the lens device of this utility model is shown. Figure 5 A cross-sectional view of the lens device of this utility model is shown. For ease of description, only the parts relevant to this utility model are shown in the figure.

[0033] It should be noted that if the directional indications (such as up, down, front, back, etc.) involved in this utility model are only used to explain the relative positional relationship between the components in a certain specific posture, the directional indications will change accordingly if the specific posture changes; if the descriptions of "first", "second", etc. involved in this utility model are used for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated.

[0034] Depend on Figure 1 , Figure 2 and Figure 3 It can be seen that the present utility model discloses a lens locking structure including:

[0035] The cylinder 10 has an installation through hole 11 on its cylinder wall that communicates with the interior of the cylinder 10.

[0036] The cover plate 20 is fixed to the outside of the cylinder 10 and covers the mounting through hole 11;

[0037] The locking plate 30 is disposed inside the mounting through hole 11, and the locking plate 30 and the mounting through hole 11 cannot rotate relative to each other;

[0038] An elastic structure is provided between the cover plate 20 and the locking pressure plate 30 to push the locking pressure plate 30 into the cylinder 10;

[0039] The connecting structure passes through the cover plate 20 and the mounting through hole 11. The connecting structure located outside the cylinder 10 is provided with a limiting structure. Specifically, the cover plate 20 is provided with a connecting through hole for the connecting structure to pass through. The connecting structure is threadedly connected to the locking pressure plate 30 and fixedly connected to the limiting structure, or the connecting structure is fixedly connected to the locking pressure plate 30 and threadedly connected to the limiting structure.

[0040] For ease of understanding, combined with Figure 4 and Figure 5 The following instructions explain the use of the lens locking mechanism and the installation of the lens:

[0041] Because the connecting structure passes through the cover plate 20 and the mounting through hole 11, and the part of the connecting structure located outside the cylinder 10 is provided with a limiting structure, the connecting structure passes through the cover plate 20 and is connected to the locking pressure plate 30, and an elastic structure is provided between the cover plate 20 and the locking pressure plate 30, the elastic force of the elastic structure can make the limiting structure fit against the cover plate 20 and push the locking pressure plate 30 to press into the cylinder 10; because the connecting structure is threadedly connected to the locking pressure plate 30 and fixedly connected to the limiting structure, or the connecting structure is fixedly connected to the locking pressure plate 30 and threadedly connected to the limiting structure, and the locking pressure plate 30 is connected to the mounting through hole 11... When the connecting structure and the locking pressure plate 30 are threadedly connected and the limiting structure is fixedly connected, rotating the limiting structure will cause the connecting structure to rotate, resulting in relative rotation between the connecting structure and the locking pressure plate 30. This will adjust the distance between the limiting structure and the locking pressure plate 30. When the connecting structure and the locking pressure plate 30 are fixedly connected and the limiting structure is threadedly connected, rotating the limiting structure will cause relative rotation between the limiting structure and the connecting structure. This will allow the locking pressure plate 30 to move through the connecting structure, thereby adjusting the distance between the limiting structure and the locking pressure plate 30.

[0042] During installation, rotate the limiting structure to reduce the distance between the limiting structure and the locking plate 30, adjust the locking plate 30 to the inside of the mounting through hole 11, pass the lens 60 through the cylinder 10 and adjust the position of the lens 60, then rotate the limiting structure again to increase the distance between the limiting structure and the locking plate 30. The elastic force of the elastic structure can push the locking plate 30 to press into the cylinder 10, thereby fixing the lens 60.

[0043] Specifically, after the lens 60 passes through the cylinder 10, the limiting structure is rotated to increase the distance between the limiting structure and the locking plate 30. The elastic force of the elastic structure acts on the lens 60 through the locking plate 30, which can generate a pre-tightening force on the lens 60, which can restrict the movement of the lens 60 without completely locking the lens 60. Then, the position of the lens 60 is adjusted to the required position. Then, the limiting structure is rotated again to increase the distance between the limiting structure and the locking plate 30, thereby locking the position of the lens 60. This prevents the position of the lens 60 from changing during the locking process and affecting the projection resolution.

[0044] The lens locking structure of this utility model uses the elastic force of the elastic structure to push the locking pressure plate 30 to fix the lens 60, which can make the force on the lens 60 more balanced, avoid the lens 60 from tilting and affecting the projection resolution, and when the lens 60 moves accidentally, the elastic structure can play a buffering role between the lens 60 and the locking pressure plate 30 to avoid damage to the lens 60. This solves the problem that existing lens locking methods are prone to lens tilting during assembly and debugging, which affects the projection resolution.

[0045] In this utility model, the connecting structure and the limiting structure are fixedly connected as an integral structure. Specifically, this integral structure is the connecting screw 40, where the screw shank of the connecting screw 40 is the connecting structure and the head of the connecting screw 40 is the limiting structure. Typically, the connecting screw 40 is configured as a hexagonal head bolt, a Phillips head screw, an internal hexagon bolt, etc.

[0046] To facilitate the threaded connection between the connecting screw 40 and the locking plate 30, an internally threaded cylinder 31 is provided on the side of the locking plate 30 near the cover plate 20, and the screw of the connecting screw 40 is threadedly connected to the internally threaded cylinder 31.

[0047] In some other embodiments, the connecting structure is a screw fixedly connected to the locking pressure plate 30, and the limiting structure is a nut threadedly connected to the screw.

[0048] In this utility model, the mounting through hole 11 is rectangular, and the shape of the locking plate 30 is adapted to the shape of the mounting through hole 11. The thickness of the locking plate 30 is less than the thickness of the cylinder wall of the cylinder 10. Figure 2 and Figure 5 As shown, this can prevent relative rotation between the locking pressure plate 30 and the mounting through hole 11 when the rotation limit structure is rotated.

[0049] Specifically, the lens 60 is cylindrical, and correspondingly, the barrel 10 is a circular barrel, and the locking plate 30 is an arc-shaped panel, coaxially arranged with the barrel 10 to facilitate fitting with the outer wall of the lens 60. Of course, the lens 60 can also be prismatic, in which case the barrel 10 is a prismatic barrel, and the locking plate 30 is a flat plate.

[0050] In this utility model, the connection between the connecting structure and the locking pressure plate 30 is located at the center of the locking pressure plate 30. The elastic structure is fitted into the connecting structure between the cover plate 20 and the locking pressure plate 30, which can prevent the locking pressure plate 30 from becoming skewed and affecting the installation accuracy of the lens 60.

[0051] Specifically, the elastic structure is a cylindrical helical spring 50.

[0052] In some other embodiments, elastic structures are provided on opposite sides of the connecting structure in the circumferential direction of the cylinder 10. To facilitate installation, cover plate mounting posts and pressure plate mounting posts are provided on the cover plate 20 and the locking pressure plate 30 for each set of elastic structures. The two ends of the elastic structures are respectively installed on the cover plate mounting posts and pressure plate mounting posts.

[0053] In this utility model, the mounting through hole 11 is located at the middle of the axial direction of the cylinder 10. When the elastic structure pushes the locking plate 30 to press the lens 60, it can further prevent the lens 60 from tilting.

[0054] In this utility model, in order to facilitate the fixing of the cover plate 20 to the outside of the cylinder 10, a first fixing structure and a second fixing structure are respectively provided between the cover plate 20 and the cylinder 10 on opposite sides of the mounting through hole 11.

[0055] Specifically, the first fixing structure is a first fastening screw 21, and the second fixing structure is a second fastening screw 22. Correspondingly, the cover plate 20 has a first fastening through hole and a second fastening through hole at the locations of the first fastening screw 21 and the second fastening screw 22, respectively, and the cylinder 10 has a first threaded hole and a second threaded hole, respectively. Of course, the cover plate 20 and the cylinder 10 can also be fixedly connected by means of bonding, heat pressing, etc.

[0056] like Figure 4 and Figure 5As shown, this utility model also discloses a lens device, including a lens 60 and the aforementioned lens locking structure. The lens 60 is inserted into the cylindrical body 10, and the elastic structure pushes the locking plate 30 to press against the outer wall of the lens 60. During installation, the limiting structure is rotated to reduce the distance between the limiting structure and the locking plate 30, and the locking plate 30 is adjusted to be inside the mounting through hole 11. The lens 60 is passed through the cylindrical body 10 and its position is adjusted. Then, the limiting structure is rotated again to increase the distance between the limiting structure and the locking plate 30. The elastic force of the elastic structure can push the locking plate 30 to press tightly into the cylindrical body 10, thereby fixing the lens 60. By using the elastic force of the elastic structure to push the locking plate 30 to fix the lens 60, the force on the lens 60 can be more balanced, preventing the lens 60 from tilting and affecting projection resolution. Furthermore, if the lens 60 moves accidentally, the elastic structure can act as a buffer between the lens 60 and the locking plate 30, preventing damage to the lens 60.

[0057] Specifically, the lens 60 includes a lens barrel, with an incident lens and an exit lens installed at the two ends of the lens barrel respectively. Of course, at least one transmission lens can also be installed between the incident lens and the exit lens. The structure of the lens 60 is known technology, and its specific structure will not be described in detail here.

[0058] The above description is only some embodiments of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lens locking structure, characterized in that, include: A cylindrical body, wherein the cylindrical body has an installation through hole on its cylindrical wall that communicates with the interior of the cylindrical body; A cover plate is fixed to the outside of the cylinder and covers the mounting through hole; A locking plate is disposed inside the mounting through hole, and the locking plate and the mounting through hole cannot rotate relative to each other; An elastic structure is provided between the cover plate and the locking pressure plate to push the locking pressure plate into the cylinder; The connecting structure passes through the cover plate and the mounting through hole. The connecting structure located outside the cylinder is provided with a limiting structure. The connecting structure is threadedly connected to the locking pressure plate and fixedly connected to the limiting structure, or the connecting structure is fixedly connected to the locking pressure plate and threadedly connected to the limiting structure.

2. The lens locking structure according to claim 1, characterized in that, The connecting structure and the limiting structure are fixedly connected as an integral structure.

3. The lens locking structure according to claim 2, characterized in that, The integrated structure is a connecting screw, the screw rod of the connecting screw is the connecting structure, and the head of the connecting screw is the limiting structure.

4. The lens locking structure according to claim 3, characterized in that, An internally threaded cylinder is provided on the side of the locking pressure plate near the cover plate, and the screw of the connecting screw is threadedly connected to the internally threaded cylinder.

5. The lens locking structure according to claim 1, characterized in that, The mounting through hole is rectangular, and the shape of the locking pressure plate is adapted to the shape of the mounting through hole. The thickness of the locking pressure plate is less than the thickness of the cylinder wall.

6. The lens locking structure according to claim 5, characterized in that, The cylinder is configured as a circular cylinder, and the locking pressure plate is configured as an arc panel and is coaxially arranged with the cylinder.

7. The lens locking structure according to claim 5, characterized in that, The mounting through hole is located at the middle part of the cylinder along its axial direction.

8. The lens locking structure according to any one of claims 1 to 7, characterized in that, The connection between the connecting structure and the locking pressure plate is located at the center of the locking pressure plate, and the elastic structure is fitted onto the connecting structure between the cover plate and the locking pressure plate.

9. The lens locking structure according to claim 1, characterized in that, A first fixing structure and a second fixing structure are respectively provided between the cover plate and the cylinder at opposite sides of the mounting through hole.

10. A lens device, comprising a lens, characterized in that, It also includes a lens locking structure as described in any one of claims 1 to 9, wherein the lens is inserted into the barrel, and the elastic structure pushes the locking plate to press against the outer wall of the lens.

Images