Optical axis adjusting device
By combining the rotation adjustment mechanism and the elastic element, the problem of excessively large size of the rangefinder and scope mounting structure was solved, and precise adjustment and miniaturization of the optical axis were achieved.
Patent Information
- Application Number
- CN202520088715.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-01-15
AI Technical Summary
The existing mounting structure of rangefinders and sights results in excessive size, making it difficult to effectively adjust the optical axis in non-cylindrical products, leading to significant space waste.
A rotation adjustment mechanism is adopted, which enables the bracket to rotate around two vertical rotation axes through the cooperation of bushing, rotating frame and rotating pin. Combined with elastic element and rotation adjustment element, the overall volume is reduced.
It achieves precise adjustment of the optical axis, reduces the size of the device, facilitates miniaturization design, and improves the flexibility and stability of adjustment.
Smart Images
Figure CN223649812U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of instrument measurement and calibration technology, and further to an optical axis adjustment device. Background Technology
[0002] Rangefinders can be used alone or mounted on firearms. When used with firearms, the user needs to know the specific target being measured by the rangefinder. When there are multiple targets closely arranged in front, confusion can easily occur. Therefore, rangefinders are often used in conjunction with scopes. By observing the reticle in the scope window, the target being measured by the rangefinder can be clearly identified.
[0003] Due to assembly errors and installation gaps between the rangefinder and the scope, the optical axis of the rangefinder must be aligned parallel to the optical axis of the scope before use. Only after this alignment can the target be determined through the scope. A common method is to use the scope as a reference, adjust the optical axis of the rangefinder, and measure the distance between the rangefinder's light output position and the scope's optical axis during installation. At a certain distance, adjust the rangefinder's optical axis to the same distance from the scope's aiming point. This ensures the optical axes are parallel, and the rangefinder's optical axis is now coaxial with the accompanying visible laser. The measurement position can then be confirmed using the visible laser.
[0004] The principle of adjusting the optical axis of a rangefinder is as follows: Inside the rangefinder, the front end of the ranging component uses a fixed point as a fulcrum. During adjustment, by moving the rear end of the ranging component up, down, left, and right, the optical axis of the ranging component can swing around the fixed point. Within this swing range, it should be parallel to the optical axis of the scope. The industry commonly uses a ball joint structure as the fulcrum. This involves machining the front end of the ranging component into a ball joint, the size of which must encompass the entire ranging component. After the ball joint is fixed by other structures, it can only swing along its center, thus achieving the adjustment purpose. Ball joint structures are often used in cylindrical products like scopes. However, for non-cylindrical products like rangefinders, using a ball joint structure would significantly increase the product's dimensions, hindering structural design and resulting in considerable space waste.
[0005] For those skilled in the art, how to reduce the volume of the adjustment structure is a technical problem that needs to be solved. Utility Model Content
[0006] The core of this invention is to provide an optical axis adjustment device that achieves rotational coordination in two dimensions through a rotation adjustment mechanism, reducing the overall volume compared to a ball joint structure. The specific solution is as follows:
[0007] An optical axis adjustment device, comprising:
[0008] The outer shell serves as the assembly base;
[0009] The bracket is used to mount the ranging module;
[0010] A rotation adjustment mechanism includes a bushing, a rotating frame, and a rotating pin. The bushing is installed on the housing, and the rotating pin is installed on the bracket. The rotating frame rotatably connects the bushing and the rotating pin respectively. The bracket rotates around a first rotation axis through the cooperation of the bushing and the rotating frame, and the bracket rotates around a second rotation axis through the cooperation of the rotating frame and the rotating pin.
[0011] An elastic element is disposed between the outer shell and the bracket to provide elastic force to the bracket;
[0012] A first rotation adjustment component is installed on the housing and can move closer to or further away from the bracket, used to push the bracket to rotate around the first rotation axis;
[0013] The second rotation adjustment component, installed on the housing, can move closer to or further away from the bracket, and is used to push the bracket to rotate around the second rotation axis.
[0014] Optionally, a support pin is provided on the bottom surface of the housing, and the top of the support pin is a spherical surface for supporting the bracket.
[0015] Optionally, the rotating pin is inserted into the insertion slot of the bracket along the second rotation axis; a mounting slot is provided coaxially with the insertion slot, the mounting slot being used for fastening screw installation and threadedly connected to the rotating pin.
[0016] Optionally, a sliding plate is mounted on the bracket, the sliding plate being used to contact the spherical surface at the tip of the support nail.
[0017] Optionally, the bushing is a bearing, and the rotating shaft of the rotating frame is inserted into the inner ring of the bearing and fixed by screws;
[0018] The rotating pin is a cylindrical pin, which is inserted into the rotating channel of the rotating frame.
[0019] Optionally, one elastic element is provided to apply an inclined elastic force to the bracket, and the elastic force of the elastic element has components in both the first rotation axis and the second rotation axis.
[0020] Optionally, a support block is provided on the bracket, and the support block and the elastic element are located on the same side of the vertical plane passing through the second rotation axis;
[0021] The first and second rotation adjustment members press against the two sides of the support block respectively, and the pressure direction of the first and second rotation adjustment members is used to resist the elastic force of the elastic member.
[0022] Optionally, the housing is provided with a mounting boss, and the bushing is installed in the mounting groove of the mounting boss, wherein the thickness of the mounting boss is greater than the height of the bushing.
[0023] Optionally, a sealing cap is threaded into the assembly groove and coated with sealant. The sealing cap is used to cover and seal the rotation adjustment mechanism.
[0024] Optionally, a visible laser module is mounted on the bracket, and one end of the visible laser module is provided with an end spherical surface, which is used to form a spherical fit with the mounting bracket provided on the bracket.
[0025] This invention provides an optical axis adjustment device. A bracket is used to mount a ranging module. The bracket is mounted on a housing via a rotation adjustment mechanism. A bushing of the rotation adjustment mechanism is mounted on the housing, and a rotating pin is mounted on the bracket. A rotating frame rotatably connects the bushing and the rotating pin. Therefore, the bracket rotates around a first rotation axis through the cooperation of the bushing and the rotating frame, and around a second rotation axis through the cooperation of the rotating frame and the rotating pin, allowing the bracket to rotate around both axes. A first rotation adjustment component can move closer to or further away from the bracket to push the bracket to rotate around the first rotation axis. A second rotation adjustment component can also move closer to or further away from the bracket to push the bracket to rotate around the second rotation axis. When the first and second rotation adjustment components are close to the bracket, a pushing force is generated; when they are far from the bracket, an elastic component provides a spring force to the bracket, causing the bracket to rotate in the opposite direction. Compared to a ball joint structure, this device reduces the overall volume. Attached Figure Description
[0026] 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 these drawings without creative effort.
[0027] Figure 1 This is an exploded view of the components of the optical axis adjustment device of this utility model;
[0028] Figure 2 This is an isometric view of the optical axis adjustment device of this utility model, excluding the housing;
[0029] Figure 3 Axonometric drawing of the support frame, ranging module, and visible laser module in conjunction with the support frame;
[0030] Figure 4 This is a longitudinal sectional view of the optical axis adjustment device of this utility model;
[0031] Figure 5 This is a longitudinal cross-sectional view of the rotation adjustment mechanism.
[0032] The image includes:
[0033] 1. Outer shell, 11. Support pin, 12. Mounting boss, 121. Assembly groove, 13. Sealing cover, 2. Bracket, 21. Insertion groove, 22. Mounting groove, 23. Fastening screw, 24. Slide plate, 25. Support block, 26. Mounting bracket, 37. Rotation adjustment mechanism, 38. Bushing, 31. Rotation bracket, 32. Rotation pin, 33. Elastic element, 4. First rotation adjustment element, 5. Second rotation adjustment element, 6. Distance measuring module, 7. Visible laser module, 8. End spherical surface, 81. Detailed Implementation
[0034] To enable those skilled in the art to better understand the technical solution of this utility model, the optical axis adjustment device of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0035] Combination Figure 1 , Figure 2 As shown, this utility model provides an optical axis adjustment device, including a housing 1, a bracket 2, a rotation adjustment mechanism 3, an elastic element 4, a first rotation adjustment element 5, a second rotation adjustment element 6, and other structures. The housing 1 serves as the assembly base, and the other structures are mounted on the housing 1. The bracket 2 is used to mount devices such as a ranging module 7, and the bracket 2 can drive the mounted devices to rotate relative to the housing 1.
[0036] The rotation adjustment mechanism 3 includes a bushing 31, a rotating frame 32, and a rotating pin 33. The bushing 31 is mounted on the outer casing 1, and the rotating pin 33 is mounted on the bracket 2. The rotating frame 32 rotatably connects the bushing 31 and the rotating pin 33. The bracket 2 rotates around a first rotation axis through the cooperation of the bushing 31 and the rotating frame 32, and rotates around a second rotation axis through the cooperation of the rotating frame 32 and the rotating pin 33. Figure 3 As shown, Ⅰ represents the first rotation axis, which is horizontal; Ⅱ represents the second rotation axis, which is vertical. The first and second rotation axes are perpendicular to each other. The rotating frame 32 is inserted into the bushing 31, and the rotating frame 32 can rotate relative to the bushing 31; the rotating pin 33 is inserted into the rotating frame 32, and the rotating pin 33 can rotate relative to the rotating frame 32.
[0037] The elastic element 4 is disposed between the outer shell 1 and the bracket 2 to provide elastic force to the bracket 2. With the help of the elastic force of the elastic element 4, the bracket 2 is always in contact with the first rotation adjustment element 5 and the second rotation adjustment element 6.
[0038] The first rotation adjustment member 5 is mounted on the housing 1. The movable part of the first rotation adjustment member 5 can approach or move away from the bracket 2 to push the bracket 2 to rotate around the first rotation axis. The second rotation adjustment member 6 is mounted on the housing 1. The movable part of the second rotation adjustment member 6 can approach or move away from the bracket 2 to push the bracket 2 to rotate around the second rotation axis. Figure 4As shown, the first rotation adjustment member 5 is used to generate a thrust on the bracket 2 in the horizontal direction, and the second rotation adjustment member 6 is used to generate a thrust on the bracket 2 in the vertical direction. When the first rotation adjustment member 5 is close to the bracket 2, it generates a thrust on the bracket 2, and the bracket 2 rotates around the first rotation axis; when the first rotation adjustment member 5 is away from the bracket 2, the elastic member 4 generates a thrust on the bracket 2, causing the bracket 2 to rotate in the opposite direction around the first rotation axis, and the bracket 2 is always in contact with the movable part of the first rotation adjustment member 5. When the second rotation adjustment member 6 is close to the bracket 2, it generates a thrust on the bracket 2, and the bracket 2 rotates around the second rotation axis; when the second rotation adjustment member 6 is away from the bracket 2, the elastic member 4 generates a thrust on the bracket 2, causing the bracket 2 to rotate in the opposite direction around the second rotation axis, and the bracket 2 is always in contact with the movable part of the second rotation adjustment member 6.
[0039] This invention utilizes a rotation adjustment mechanism 3 to allow the outer casing 1 and the support 2 to rotate and adjust around two axes. The bushing 31 and the rotating frame 32 are hinged together, as are the rotating frame 32 and the rotating pin 33. These two hinges allow the support 2 to rotate and adjust around the first and second rotation axes respectively. With the cooperation of the first rotation adjustment member 5, the second rotation adjustment member 6, and the elastic member 4, the angle of the support 2 can be adjusted by actively turning the movable parts of the first and second rotation adjustment members 5 and 6.
[0040] The optical axis adjustment device of this utility model forms a hinged fit in two positions through the three structures of the rotation adjustment mechanism 3. The bushing 31 and the rotating frame 32 form a hinged fit, and the rotating frame 32 and the rotating pin 33 form a hinged fit. Compared with the traditional complete ball joint structure, this device can reduce the overall volume and help to miniaturize the entire optical axis adjustment device.
[0041] A support pin 11 is provided on the bottom surface of the outer casing 1. The top of the support pin 11 is a spherical surface for supporting the bracket 2. Regardless of the position of the bracket 2, the spherical structure of the support pin 11 always contacts the bracket 2, thereby supporting the bracket 2 and keeping it stable during adjustment to prevent it from shaking. The support pin 11 should be located at two opposite apex corners of the elastic element 4 to balance the elastic force formed by the elastic element 4 and prevent the corners of the bracket 2 from tilting up. When the bracket 2 rotates around the second rotation axis, the spherical surface of the support pin 11 can always contact and support the bracket 2.
[0042] It should be noted that the support pin 11 can also be set on the bracket 2. In this case, the part of the support pin 11 that contacts the outer shell 1 is set as a spherical surface, which can also play a supporting role.
[0043] Combination Figure 4As shown, the bracket 2 is provided with an insertion slot 21 and an installation slot 22 along the second rotation axis. The insertion slot 21 and the installation slot 22 are coaxially arranged, and a channel for installing the fastening screw 23 is provided between the insertion slot 21 and the installation slot 22. The rotating pin 33 is inserted into the insertion slot 21 of the bracket 2 along the second rotation axis and passes through the rotating frame 32. The installation slot 22 is used for installing the fastening screw 23 and is threadedly connected to the rotating pin 33. When the rotating pin 33 is locked to the bracket 2 by the fastening screw 23, the rotating pin 33 cannot be translated along the second rotation axis.
[0044] Combination Figure 4 As shown, a slide plate 24 is installed on the bracket 2. The slide plate 24 is made of wear-resistant material. The slide plate 24 is used to contact the spherical surface at the top of the support pin 11, thereby preventing the support pin 11 from causing wear to the bracket 2.
[0045] Specifically, in combination Figure 5 As shown, in this invention, the bushing 31 is a bearing, and the rotating shaft of the rotating frame 32 is inserted into the inner ring of the bearing and fixed by screws. The screws are inserted into the rotating shaft and form a threaded fit, thus fixing the rotating frame 32 and the inner ring of the bearing. The rotating pin 33 is a cylindrical pin, inserted into the rotating channel of the rotating frame 32. Lubricating grease is applied between the rotating pin 33 and the rotating channel of the rotating frame 32 to reduce friction. The bushing 31 uses a bearing while the rotating pin 33 is directly slidably assembled with the rotating frame 32, which helps to reduce the dimension in the vertical height direction.
[0046] Combination Figure 4 As shown, the present invention includes one elastic element 4, which is a helical spring used to apply an inclined elastic force to the bracket 2. The elastic force of the elastic element 4 has components on both the first and second rotation axes. The elastic force applied by the elastic element 4 to the bracket 2 is neither parallel to the first rotation axis nor parallel to the second rotation axis. The inclined elastic element 4 can resist the thrust of both the first rotation adjustment element 5 and the second rotation adjustment element 6.
[0047] A support block 25 is provided on the bracket 2. The support block 25 adopts a detachable connection method, which is convenient for processing and easy to replace. The support block 25 has at least two mutually perpendicular sides. The first rotation adjustment member 5 and the second rotation adjustment member 6 respectively press against the two sides of the support block 25. The pressure direction of the first rotation adjustment member 5 and the pressure direction of the second rotation adjustment member 6 are used to resist the elastic force of the elastic member 4. Figure 2 As shown, the support block 25 and the elastic element 4 are located on the same side of the vertical plane passing through the second rotation axis. The pushing force of the first rotation adjustment element 5 and the second rotation adjustment element 6 on the support block 25 can both compress the elastic element 4.
[0048] Combination Figure 4As shown, this utility model provides a mounting boss 12 on the bottom plate of the outer shell 1. The thickness of the mounting boss 12 is greater than the thickness of other parts of the bottom plate. The bushing 31 is installed in the assembly groove 121 of the mounting boss 12. The thickness of the mounting boss 12 is greater than the height of the bushing 31, and the height of the assembly groove 121 is greater than the height of the bushing 31, ensuring that there is sufficient overlap area between the bushing 31 and the assembly groove 121, forming sufficient limit for the bushing 31 and preventing the bushing 31 from tilting.
[0049] To improve the sealing effect, the present invention has a sealing cover 13 threadedly connected to the assembly groove 121 and coated with sealant. The sealing cover 13 is used to cover the sealing rotation adjustment mechanism 3, reduce the entry of external dust and impurities into the rotation adjustment mechanism 3, and ensure the long-term stable use of the rotation adjustment mechanism 3.
[0050] Combination Figure 1 , Figure 3 As shown, a visible laser module 8 is mounted on the bracket 2. One end of the visible laser module 8 has an end spherical surface 81, which is used to form a spherical fit with the mounting bracket 26 on the bracket 2. This spherical fit allows adjustment of the emission angle of the visible laser module 8, ensuring that the visible laser emitted by the module 8 remains parallel to the ranging laser of the ranging module 7. The laser of the ranging module 7 is invisible; its position can be determined by the indicator point on the visible laser module 8.
[0051] The optical axis adjustment device of this utility model uses the bracket 2 as a reference, which can realize the free adjustment of the optical axis within a certain range of up, down, left and right. It has high structural reliability, and the optical axis will not be affected by external impact and vibration after it is fixed. It has a compact structure, is easy to adjust, and effectively improves shooting accuracy.
[0052] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. An optical axis adjustment device, characterized in that, include: The outer shell (1) serves as the assembly base; The bracket (2) is used to install the ranging module (7); The rotation adjustment mechanism (3) includes a bushing (31), a rotating frame (32), and a rotating pin (33). The bushing (31) is installed on the outer shell (1), and the rotating pin (33) is installed on the bracket (2). The rotating frame (32) rotatably connects the bushing (31) and the rotating pin (33) respectively. The bracket (2) rotates around a first rotation axis through the cooperation of the bushing (31) and the rotating frame (32), and the bracket (2) rotates around a second rotation axis through the cooperation of the rotating frame (32) and the rotating pin (33). An elastic element (4) is disposed between the outer shell (1) and the bracket (2) for providing elastic force to the bracket (2); The first rotation adjustment member (5) is installed on the housing (1) and can move closer to or further away from the bracket (2) to push the bracket (2) to rotate around the first rotation axis; The second rotation adjustment member (6) is installed on the housing (1) and can move closer to or further away from the bracket (2) to push the bracket (2) to rotate around the second rotation axis.
2. The optical axis adjustment device according to claim 1, characterized in that, The bottom surface of the outer shell (1) is provided with a support nail (11), and the top of the support nail (11) is a spherical surface for supporting the bracket (2).
3. The optical axis adjustment device according to claim 2, characterized in that, The rotating pin (33) is inserted into the insertion slot (21) of the bracket (2) along the second rotation axis; the mounting slot (22) is coaxially provided with the insertion slot (21), the mounting slot (22) is used for the installation of the fastening screw (23) and is threadedly connected to the rotating pin (33).
4. The optical axis adjustment device according to claim 3, characterized in that, A sliding plate (24) is mounted on the bracket (2), the sliding plate (24) being used to contact the spherical surface at the top of the support nail (11).
5. The optical axis adjustment device according to claim 1, characterized in that, The bushing (31) is a bearing, and the rotating shaft of the rotating frame (32) is inserted into the inner ring of the bearing and fixed by screws; The rotating pin (33) is a cylindrical pin, which is inserted into the rotating channel of the rotating frame (32).
6. The optical axis adjustment device according to claim 1, characterized in that, One elastic element (4) is provided to apply an inclined elastic force to the bracket (2), and the elastic force of the elastic element (4) has components in both the first rotation axis and the second rotation axis.
7. The optical axis adjustment device according to claim 1, characterized in that, A support block (25) is provided on the bracket (2), and the support block (25) and the elastic element (4) are located on the same side of the vertical plane passing through the second rotation axis; The first rotation adjustment member (5) and the second rotation adjustment member (6) press against the two sides of the support block (25) respectively. The pressure direction of the first rotation adjustment member (5) and the pressure direction of the second rotation adjustment member (6) are used to resist the elastic force of the elastic member (4).
8. The optical axis adjustment device according to claim 7, characterized in that, The housing (1) is provided with a mounting boss (12), and the bushing (31) is installed in the mounting groove (121) of the mounting boss (12). The thickness of the mounting boss (12) is greater than the height of the bushing (31).
9. The optical axis adjustment device according to claim 8, characterized in that, The assembly groove (121) is internally threaded with a sealing cap (13) and coated with sealant. The sealing cap (13) is used to cover and seal the rotation adjustment mechanism (3).
10. The optical axis adjustment device according to claim 8, characterized in that, A visible laser module (8) is installed on the bracket (2). One end of the visible laser module (8) is provided with an end spherical surface (81), which is used to form a spherical fit with the mounting bracket (26) provided on the bracket (2).