Micro two-degree-of-freedom rotation angle adjusting structure

Abstract

The utility model discloses a micro two -freedom degree corner adjusting structure relates to optical element technical field, the micro two -freedom degree corner adjusting structure includes adjusting bottom plate, adjusting cover, three elastic members, two screw members and positioning block, wherein, adjusting cover swing setting in the top of adjusting bottom plate, three elastic members set up between adjusting bottom plate with adjusting cover, and are located respectively near the position of three angles of adjacent adjusting cover, two screw members all are worn in adjusting cover, and the elastic member of two diagonal setting is penetrated, is connected in adjusting bottom plate, positioning block sets up in the bottom of adjusting cover, and with one of elastic member is diagonally seted up, positioning block swing installation on adjusting bottom plate, with positioning block as the center of rotation for adjusting cover.

Description

Technical Field

[0001] This utility model relates to the field of optical element technology, and in particular to a miniature two-degree-of-freedom rotation adjustment structure. Background Technology

[0002] Optical adjustment frames are an important component of optomechanical products, mainly used to fix and precisely control the attitude of optical components. Optical adjustment frames are mainly composed of multi-degree-of-freedom angular adjustment structures, which include two-degree-of-freedom, three-degree-of-freedom, four-degree-of-freedom, five-degree-of-freedom, and six-degree-of-freedom types, with each degree of freedom representing a dimension.

[0003] The existing two-degree-of-freedom angle adjustment structure can achieve angle adjustment in two directions. It is generally suitable for scenarios where only the angle of optical elements needs to be precisely adjusted in two dimensions. It requires the cooperation of multiple parts, which makes its assembly process complicated, increases production costs, and requires a large space for installation. Utility Model Content

[0004] The main purpose of this invention is to propose a miniature two-degree-of-freedom angle adjustment structure, which aims to reduce the number of parts and lower production costs.

[0005] To achieve the above objectives, the present invention proposes a miniature two-degree-of-freedom rotation adjustment structure, comprising:

[0006] Adjust the base plate;

[0007] An adjusting cover plate is movably mounted on top of the adjusting base plate;

[0008] Three elastic elements are disposed between the adjusting base plate and the adjusting cover plate, and are respectively located at three corners adjacent to the adjusting cover plate;

[0009] Two screw connectors, both passing through the adjusting cover plate and through two diagonally arranged elastic elements, are threaded into the adjusting base plate; and...

[0010] A positioning block is disposed at the bottom of the adjusting cover plate and is diagonally disposed with one of the elastic elements. The positioning block is movably mounted on the adjusting base plate so that the adjusting cover plate rotates around the positioning block as the center.

[0011] Preferably, the adjusting cover plate has a through hole for the screw connector to pass through, and a wear-resistant layer is provided in the through hole.

[0012] Preferably, the screw connector includes a nut portion and a screw portion, the screw portion passing through the through hole, and the length of the nut portion being greater than the inner diameter of the through hole.

[0013] Preferably, the side of the positioning block furthest from the adjusting base plate is arranged in an arc shape.

[0014] Preferably, the adjusting base plate is provided with a limiting groove, and the limiting groove is provided corresponding to the positioning block.

[0015] Preferably, the adjusting base plate has three positioning slots, and the elastic element is installed in each of the positioning slots.

[0016] Preferably, the adjusting cover plate is provided with three positioning rings, and the elastic element is installed in each positioning ring.

[0017] Preferably, a buffer pad is provided at the bottom of the positioning ring.

[0018] Preferably, both the adjusting cover plate and the adjusting base plate are provided with light-transmitting holes.

[0019] Furthermore, this application also provides an optical adjustment frame, including a miniature two-degree-of-freedom angle adjustment structure. The miniature two-degree-of-freedom angle adjustment structure includes an adjustment base plate, an adjustment cover plate, three elastic elements, two screw connectors, and a positioning block. The adjustment cover plate is movably disposed on the top of the adjustment base plate. The three elastic elements are disposed between the adjustment base plate and the adjustment cover plate, and are respectively located at three adjacent corners of the adjustment cover plate. The two screw connectors are both inserted through the adjustment cover plate and pass through two diagonally disposed elastic elements, and are threadedly connected to the adjustment base plate. The positioning block is disposed at the bottom of the adjustment cover plate and is diagonally disposed with one of the elastic elements. The positioning block is movably mounted on the adjustment base plate so that the adjustment cover plate rotates around the positioning block as the center.

[0020] In the technical solution provided by this utility model, the adjusting cover plate is movably disposed on the top of the adjusting base plate. The three elastic elements are disposed between the adjusting base plate and the adjusting cover plate, and are respectively located at the three adjacent corners of the adjusting cover plate. The two screw connectors are both disposed through the adjusting cover plate and through the two diagonally disposed elastic elements, and are threadedly connected to the adjusting base plate. The positioning block is disposed at the bottom of the adjusting cover plate and is diagonally disposed with one of the elastic elements. The positioning block is movably mounted on the adjusting base plate so that the adjusting cover plate rotates around the positioning block as the center. By using the cooperation of the base plate, cover plate, elastic elements, screw connectors and positioning block, the number of parts required for the corner adjustment structure is simplified, and the manufacturing process of the parts is simplified, thereby reducing production costs and processes, and facilitating subsequent installation and use. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 A three-dimensional schematic diagram of an embodiment of the miniature two-degree-of-freedom rotation adjustment structure provided by this utility model;

[0023] Figure 2 for Figure 1 A schematic diagram of the explosive decomposition of a micro-sized two-degree-of-freedom rotation adjustment structure.

[0024] Explanation of icon numbers:

[0025] 100. Miniature two-degree-of-freedom angle adjustment structure; 1. Adjustment base plate; 2. Adjustment cover plate; 3. Screw connector; 4. Elastic component; 5. Positioning groove; 6. Positioning ring; 7. Limiting groove.

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] This invention provides a miniature two-degree-of-freedom rotation adjustment structure. Figures 1 to 2 This is an embodiment of the miniature two-degree-of-freedom rotation adjustment structure provided by this utility model.

[0031] Please refer to the following: Figures 1 to 2 The miniature two-degree-of-freedom angle adjustment structure 100 includes an adjustment base plate 1, an adjustment cover plate 2, three elastic elements 4, two screw connectors 3, and a positioning block. The adjustment cover plate 2 is movably disposed on the top of the adjustment base plate 1. The three elastic elements 4 are disposed between the adjustment base plate 1 and the adjustment cover plate 2, and are respectively located near the three adjacent corners of the adjustment cover plate 2. The two screw connectors 3 are both inserted through the adjustment cover plate 2 and through two diagonally disposed elastic elements 4, and are threadedly connected to the adjustment base plate 1. The positioning block is disposed at the bottom of the adjustment cover plate 2 and is diagonally disposed with one of the elastic elements 4. The positioning block is movably mounted on the adjustment base plate 1 so that the adjustment cover plate 2 rotates around the positioning block as the center.

[0032] The miniature two-degree-of-freedom angle adjustment mechanism is mainly used to adjust the angles in the X and Y dimensions. During installation, three elastic elements 4 are first placed on the top of the adjustment base plate 1 near the corners. The positions of each elastic element 4 on the adjustment cover plate 2 correspond to their positions on the adjustment base plate 1. A corner of the top of the adjustment base plate 1 without any components is used to place the positioning block at the bottom of the adjustment cover plate 2. The thickness of the positioning block limits the thickness between the adjustment base plate 1 and the adjustment cover plate 2, thus limiting the maximum tilt angle that the miniature two-degree-of-freedom angle adjustment mechanism can adjust. Two screw-in components 3 penetrate the adjustment cover plate 2, and their threaded ends are threaded into the adjustment base plate 1. The two screw-in components 3 are respectively located near two corners of the adjustment cover plate 2 and the adjustment base plate 1, which are diagonally opposite. Each screw-in component 3 has two elastic elements 4 working together, while the other elastic element 4 supports a corner independently, preventing the adjustment base plate 1 and the adjustment cover plate 2 from touching.

[0033] By rotating the screw connector 3, it moves axially. After rotation, the screw connector 3 delves deeper into the adjusting base plate 1, compressing the distance between the adjusting base plate 1 and the adjusting cover plate 2 at the corresponding position until it reaches that position. This causes the adjusting cover plate 2 to tilt downwards towards the angle corresponding to the screw connector 3. Simultaneously, the elastic element 4 corresponding to the screw connector 3 pushes upwards against the adjusting cover plate 2, preventing it from falling and fitting against the adjusting base plate 1. Conversely, after rotation, the screw connector 3 moves gradually away from the adjusting base plate 1, increasing the distance between the adjusting cover plate 2 and the adjusting base plate 1 at the corresponding position, thereby changing the tilt angle of the adjusting cover plate 2. Simultaneously, the corresponding elastic element 4 will push the adjusting cover plate 2 upward, thereby increasing the distance between the adjusting cover plate 2 and the adjusting base plate 1 and completing the change of the tilt angle. Each time it is adjusted, only one screw connector 3 needs to be rotated, while the other screw connector 3 remains stationary. When rotating the screw connector 3 to adjust the tilt angle of the adjusting cover plate 2, the positioning block continues to be in contact with the adjusting base plate 1 and rotates to a certain extent in coordination with the change of the tilt angle of the adjusting cover plate 2. The elastic element 4 at the bottom corner opposite to it will lift this position through elastic potential energy to form a soft support, so that this position of the adjusting cover plate 2 is always in the lifted state to ensure the adjustment of the tilt angle of the adjusting cover plate 2.

[0034] Threaded component 3 is a component with a threaded rod; it can be a screw or bolt, etc. Elastic component 4 can be a spring or other component with similar function.

[0035] Therefore, in the technical solution provided by this utility model, the adjusting cover plate 2 is movably disposed on the top of the adjusting base plate 1, the three elastic elements 4 are disposed between the adjusting base plate 1 and the adjusting cover plate 2, and are respectively located near the three adjacent corners of the adjusting cover plate 2, the two screw connectors 3 are both inserted through the adjusting cover plate 2 and through the two diagonally disposed elastic elements 4, and are threadedly connected to the adjusting base plate 1, the positioning block is disposed at the bottom of the adjusting cover plate 2 and is diagonally disposed with one of the elastic elements 4, the positioning block is movably installed on the adjusting base plate 1 so that the adjusting cover plate 2 rotates around the positioning block as the center. By using the cooperation of the base plate, cover plate, elastic elements 4, screw connectors 3 and positioning block, the number of parts required for the corner adjustment structure is simplified, and the manufacturing process of the parts is simplified, thereby reducing production costs and processes, and facilitating subsequent installation and use.

[0036] When the screw connector 3 rotates, it not only rotates but also rubs against the adjusting cover plate 2 axially, causing damage. While both the screw connector 3 and the adjusting cover plate 2 can be made of materials with high wear resistance, such as stainless steel, the cost is high. To reduce costs, this is only implemented in certain areas. Specifically, in this embodiment, the adjusting cover plate 2 has a through hole for the screw connector 3 to pass through, and a wear-resistant layer is provided inside the through hole. By creating a through hole in the adjusting cover plate 2 for the screw connector 3 to pass through and coating the hole wall with a wear-resistant material, only one or more layers of wear-resistant material are applied to the hole wall, thus reducing production costs.

[0037] Furthermore, the screw connector 3 includes a nut portion and a screw portion, the screw portion passing through the through hole, and the length of the nut portion being greater than the inner diameter of the through hole.

[0038] Since the length of the screw connector 3 is limited, if the elastic potential energy of the elastic element 4 is too strong, it will push the adjusting cover 2 to detach from the screw connector 3. Therefore, a limiting element is needed to limit the range of motion of the adjusting cover 2. That is, the screw connector 3 can use a bolt with a nut. The length of the nut is greater than the inner diameter of the through hole, so that the nut cannot enter the through hole. The range of motion of the adjusting cover 2 can be limited by the nut.

[0039] The positioning block is used to limit the distance between the adjusting cover plate 2 and the adjusting base plate 1 at the corresponding position. At the same time, when the tilt angle of the adjusting cover plate 2 is adjusted, the positioning block can rotate on the adjusting base plate 1 to match the change of the tilt angle of the adjusting cover plate 2. In order for the positioning block to rotate smoothly on the adjusting base plate 1, the positioning block needs to rotate without obstruction. Specifically, in the embodiment of this utility model, the side of the positioning block away from the adjusting base plate 1 is arranged in an arc shape.

[0040] When no structure is provided at the position where the positioning block fits on the adjusting base plate 1, the positioning block can rotate in any direction on the plane. Therefore, it is necessary to limit the rotation range of the positioning block. Specifically, in this embodiment of the invention, a limiting groove 7 is provided on the adjusting base plate 1, and the limiting groove 7 is correspondingly provided with the positioning block. When the positioning block is placed in the limiting groove 7, the rotation range of the positioning block can only be within the limiting groove 7, thereby limiting the rotation range of the positioning block. The limiting groove 7 can be formed into a groove shape that matches the arc-shaped surface of the positioning block, thereby further limiting the rotation range of the positioning block, so that the positioning block can only rotate in the same position.

[0041] The elastic element 4 is placed directly between the adjusting base plate 1 and the adjusting cover plate 2. If the side of the elastic element 4 is subjected to an impact, it may detach from the adjusting base plate 1 and the adjusting cover plate 2. Therefore, the placement of the elastic element 4 needs to be restricted. Specifically, in the technical solution of this utility model, the adjusting base plate 1 has three positioning grooves 5, and the elastic element 4 is installed in each of the positioning grooves 5. One end of the elastic element 4 is placed in the positioning groove 5, so that part of the elastic element 4 is embedded in the positioning groove 5. The depth of the positioning groove 5 restricts the range of motion of the elastic element 4, preventing it from detaching from the adjusting base plate 1 upon impact. This also allows workers to easily remove the elastic element 4 from the positioning groove 5 and replace it with a more suitable elastic element 4.

[0042] Furthermore, the adjusting cover plate 2 is provided with three positioning rings 6, and the elastic element 4 is installed in each of the positioning rings 6. While the positioning groove 5 on the base plate 1 restricts the end of the elastic element 4 that is in contact with the base plate 1, the other end of the elastic element 4 also needs to be restricted. A positioning ring 6 is set at the bottom of the adjustment cover plate 2 at the position corresponding to the elastic element 4. The positioning ring 6 is a hollow ring structure. The other end of the elastic element 4 is placed in the cavity in the middle of the positioning ring 6, so that the positioning ring 6 restricts the other end of the elastic element 4, so that the side of the elastic element 4 will not detach from the adjustment top plate or the adjustment base plate 1 when subjected to external force. Alternatively, a corresponding groove can be opened on the adjustment cover plate 2 to replace the positioning ring 6, and this groove is set in correspondence with the positioning groove 5, so that both ends of the elastic element 4 can be placed into the positioning groove 5 of the adjustment base plate 1 and the groove of the adjustment cover plate 2 respectively. The movement of the elastic element 4 is restricted by the two grooves, and the size of the groove restricts the range of motion of the elastic element 4. This ensures that after the elastic element 4 is compressed, it returns to its original position through elastic potential energy and remains in the original position. This ensures that the adjustment cover plate 2 is adjusted according to the preset tilt angle, and that the corner adjustment structure can complete the adjustment work more accurately.

[0043] After the adjusting cover plate 2 is adjusted to a certain tilt angle, one corner will contact the adjusting base plate 1. This contact will cause one side of the positioning ring 6 on the adjusting cover plate 2 to impact and wear against the adjusting base plate 1. Because the positioning ring 6 experiences a smaller wear area, it is more easily worn and deformed. Therefore, the positioning ring 6 needs to be protected. Specifically, a buffer pad is provided at the bottom of the positioning ring 6. The buffer pad is made of a wear-resistant and flexible material. While the buffer pad is wear-resistant, it is not too hard, which greatly reduces the damage when the buffer pad impacts and wears against the adjusting base plate 1 instead of the positioning ring 6, thereby improving the service life of the positioning ring 6.

[0044] Both the adjusting cover plate 2 and the adjusting base plate 1 have light-transmitting holes.

[0045] In addition, this application also provides an optical adjustment frame, which includes a miniature two-degree-of-freedom rotation adjustment structure 100. Since the optical adjustment frame adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0046] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A micro two-degree-of-freedom rotation angle adjusting structure applied to an optical adjusting frame, characterized in that, include: Adjust the base plate; An adjusting cover plate is movably mounted on top of the adjusting base plate; Three elastic elements are disposed between the adjusting base plate and the adjusting cover plate, and are respectively located at three corners adjacent to the adjusting cover plate; Two screw connectors are provided, both of which pass through the adjusting cover plate and through the two diagonally arranged elastic members, and are threaded into the adjusting base plate. as well as, A positioning block is disposed at the bottom of the adjusting cover plate and is diagonally disposed with one of the elastic elements. The positioning block is movably mounted on the adjusting base plate so that the adjusting cover plate rotates around the positioning block as the center.

2. The micro two-degree-of-freedom rotation adjusting structure according to claim 1, wherein The adjusting cover plate has a through hole for the screw-in component to pass through, and a wear-resistant layer is provided inside the through hole.

3. The micro two-degree-of-freedom rotation adjusting structure according to claim 2, wherein The screw connector includes a nut portion and a screw portion, the screw portion passing through the through hole, and the length of the nut portion being greater than the inner diameter of the through hole.

4. The micro two-degree-of-freedom rotation adjusting structure according to claim 1, wherein The positioning block is arranged in an arc shape on the side away from the adjusting base plate.

5. The micro two-degree-of-freedom rotation adjusting structure according to claim 1, wherein The adjusting base plate is provided with a limiting groove, and the limiting groove is correspondingly provided with the positioning block.

6. The micro two-degree-of-freedom rotation adjusting structure according to claim 1, wherein The adjusting base plate has three positioning slots, and the elastic element is installed in each of the positioning slots.

7. The micro two-degree-of-freedom rotation adjusting structure according to claim 1, wherein The adjusting cover plate is provided with three positioning rings, and the elastic element is installed in each positioning ring.

8. The micro two-degree-of-freedom rotation adjusting structure according to claim 7, wherein A buffer pad is provided at the bottom of the positioning ring.

9. The micro two-degree-of-freedom rotation adjusting structure according to claim 1, wherein Both the adjusting cover plate and the adjusting base plate have light-transmitting holes.

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