A sight glass for a fuel tank of an internal combustion engine

Abstract

The utility model discloses a kind of like intensifier and combination positioning tool of reticle gluing, it is related to optical equipment technical field, and include: positioning seat, positioning plate and auxiliary reticle;The utility model uses, when installing reticle and auxiliary reticle, the line of crosshair of reticle is aligned with first reference line, then first reference line is aligned with reference surface, since the angle between the extension line of the length direction of positioning plate and the plane where reference surface is 45 degrees, therefore, the angle between first reference line and the extension line of the length direction of positioning plate is also 45 degrees, to ensure that the angle between the crosshair on reticle and the guide groove of the bottom of like intensifier is also 45 degrees, to complete the accurate installation between reticle and like intensifier, and improve installation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of optical equipment technology, specifically a combined positioning fixture for bonding an image intensifier and a reticle. Background Technology

[0002] In modern night vision equipment or civilian optical devices, due to the requirements of high integration, lightweight and high reliability, it is necessary to simultaneously realize image enhancement (through image intensifier) ​​and aiming mark or ranging reference (through reticle) in low light environment. Therefore, it is necessary to directly glue the image intensifier and the reticle to simplify the optical path and improve system performance.

[0003] The phosphor screen surface of the image intensifier is bonded to the reticle surface using optical epoxy adhesive. The reticle surface is engraved with crosshairs, and the angle between the vertical engraving of the reticle surface and the guide groove of the image intensifier assembly is 45° with an error not exceeding 10′. Furthermore, the coaxiality between the center of the image intensifier and the center of the reticle should be less than Φ1mm. However, in the existing technology, the image intensifier and reticle are installed manually using handheld measuring tools, which is inefficient and has a large error.

[0004] In view of this, there is an urgent need for a combined positioning tooling, such as the bonding of the reinforcing element and the reticle, to solve the above problems. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model solves the problem using the following technical structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A combined positioning fixture for bonding an image enhancer and a reticle includes: a positioning support, a positioning plate, and an auxiliary reticle; The positioning support is provided with a cylindrical positioning cavity, and the positioning support is provided with an elliptical through hole in the bottom of the positioning cavity, the through hole being located on a radial line of the positioning cavity; The positioning plate passes through the through hole; The positioning support is provided with a reference plate circumferentially around the positioning cavity. A reference surface is provided on one side of the reference plate. The axis of the positioning cavity is located on the plane where the reference surface is located. The angle between the radial line of the positioning cavity where the through hole is located and the plane where the reference surface is located is 45 degrees. The auxiliary reticle is annular in shape. The inner side of the auxiliary reticle is adapted to the reticle, and the outer side of the auxiliary reticle is adapted to the circumferential shape of the positioning cavity. A first reference etched line is provided on the auxiliary reticle, and the extension line of the first reference etched line passes through the center of the auxiliary reticle.

[0007] The top of the reference plate is provided with a second reference etched line, the extension line of which passes through the axis of the positioning cavity, and the second reference etched line is parallel to the radial line of the positioning cavity where the through hole is located.

[0008] There are four first reference lines, which are evenly distributed in a circle.

[0009] It also includes an auxiliary ruler, which is disposed on the auxiliary reticle, with one side of the auxiliary ruler being the calibration side, and one of the first reference lines on the calibration side coinciding with each other.

[0010] The auxiliary ruler is made of transparent material.

[0011] The auxiliary ruler is made of transparent glass.

[0012] The auxiliary ruler has an inclined surface on the top surface of the calibration side, and the inclined surface extends downward from the side away from the calibration side toward the calibration side.

[0013] The auxiliary ruler is glued to the auxiliary reticle.

[0014] The positioning support is cylindrical, and the positioning cavity is coaxially disposed on the positioning support.

[0015] The positioning support is provided with two side plates in the circumferential direction of the positioning cavity, and the inner surfaces of the two side plates and the reference plate are all arc surfaces.

[0016] The above-described structure of this utility model can achieve the following beneficial effects: In use, the image intensifier is placed in the positioning cavity, and the guide groove at the bottom of the image intensifier is engaged with the positioning plate to complete the positioning of the image intensifier. Then, the reticle is placed inside the auxiliary reticle, and then the reticle and auxiliary reticle are placed together on top of the image intensifier. At this time, the outer side of the auxiliary reticle is exactly in contact with the circumferential cavity wall of the positioning cavity, thereby ensuring the coaxiality of the reticle and the image intensifier. When installing the reticle and auxiliary reticle, the crosshair of the reticle is aligned with the first reference line, and then the first reference scribe line is aligned with the reference surface. Since the angle between the extension line of the positioning plate in the length direction and the plane where the reference surface is located is 45 degrees, the angle between the first reference scribe line and the extension line of the positioning plate in the length direction is also 45 degrees. This ensures that the angle between the crosshair of the reticle and the guide groove at the bottom of the image intensifier is also 45 degrees, thereby completing the precise installation between the reticle and the image intensifier and improving the installation efficiency. This application also includes an auxiliary ruler. When the reticle and the auxiliary reticle are installed in the mounting cavity, the calibration side of the auxiliary ruler can be attached to the reference surface, thereby ensuring that the first reference line is aligned with the reference surface, improving installation efficiency and accuracy. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this embodiment; Figure 2 This is a top view used in this embodiment; Figure 3 This is a top view of this embodiment.

[0018] In the figure: 1. Positioning support; 11. Positioning cavity; 12. Through hole; 2. Positioning plate; 3. Auxiliary reticle; 31. First reference line; 4. Reference plate; 41. Reference surface; 42. Second reference line; 5. Auxiliary scale; 51. Calibration side; 6. Side plate; 7. Reticle; 8. Image intensifier. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0020] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims and accompanying drawings of this utility model are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products or devices.

[0021] The following is in conjunction with the appendix Figures 1-3 This application will be described in further detail.

[0022] refer to Figures 1-3 The image intensifier and reticle bonding assembly shown includes: a positioning support 1, a positioning plate 2, and an auxiliary reticle 3; The positioning support 1 is provided with a cylindrical positioning cavity 11, and the positioning support 1 is provided with an elliptical through hole 12 circumferentially at the bottom of the positioning cavity 11. The through hole 12 is located on a radial line of the positioning cavity 11. Positioning plate 2 is inserted through through hole 12; The positioning support 1 is provided with a reference plate 4 in the circumferential direction of the positioning cavity 11. A reference surface 41 is provided on one side of the reference plate 4. The axis of the positioning cavity 11 is located on the plane where the reference surface 41 is located. The angle between the radial line of the positioning cavity 11 where the through hole 12 is located and the plane where the reference surface 41 is located is 45 degrees. The auxiliary reticle 3 is annular in shape. The inner side of the auxiliary reticle 3 is adapted to the reticle, and the outer side of the auxiliary reticle 3 is adapted to the circumferential shape of the positioning cavity 11. A first reference etched line 31 is provided on the auxiliary reticle 3, and the extension line of the first reference etched line 31 passes through the center of the auxiliary reticle 3.

[0023] Based on the above structure, in use, the image intensifier 8 (which is cylindrical) is placed in the positioning cavity 11. The positioning plate 2 is inserted into the positioning cavity 11 through a through hole 12 and into the guide groove at the bottom of the image intensifier 8, thus completing the positioning of the image intensifier 8. Then, the reticle 7 (which is disc-shaped with crosshairs) is placed inside the auxiliary reticle 3. The reticle 7 and the auxiliary reticle 3 are then placed together on top of the image intensifier 8. At this time, the outer side of the auxiliary reticle 3 is exactly in contact with the circumferential cavity wall of the positioning cavity 11, thus ensuring the coaxiality of the reticle 7 and the image intensifier 8. When installing the reticle 7 and the auxiliary reticle 3, align one of the crosshair lines on the reticle 7 with the first reference line 31, and then align the first reference line 31 with the reference surface 41. Since the angle between the extension line of the positioning plate 2 along its length and the plane containing the reference surface 41 is 45 degrees, the angle between the first reference line 31 and the extension line of the positioning plate 2 along its length is also 45 degrees. This ensures that the angle between the crosshair line on the reticle 7 and the guide groove at the bottom of the image intensifier 8 is also 45 degrees, thus completing the precise installation between the reticle 7 and the image intensifier 8 and improving installation efficiency.

[0024] like Figures 1-3 As shown, a second reference etched line 42 is provided on the top of the reference plate 4. The extension line of the second reference etched line 42 passes through the axis of the positioning cavity 11. The second reference etched line 42 is parallel to the radial line of the positioning cavity 11 where the through hole 12 is located (that is, the angle between the extension line of the second reference etched line 42 and the plane where the reference surface 41 is located is 45 degrees). In this way, when the image intensifier 8 is placed in the mounting cavity 11, the second reference etched line 42 can be referenced so that the guide groove can be more accurately engaged on the positioning plate 2.

[0025] Further optimizations include, for example Figure 2 As shown, there are four first reference reticles 31, which are evenly distributed in a circle. The extension of each first reference reticle 31 passes through the center of the auxiliary reticle 3. This makes it easier to align the crosshairs on the reticle 7 with the first reference reticles 31.

[0026] like Figure 1 As shown, this embodiment also includes an auxiliary ruler 5, which is disposed on the auxiliary reticle 3 (the auxiliary ruler 5 and the auxiliary reticle 3 can be glued together). One side of the auxiliary ruler 5 is a calibration side 51, and one of the first reference lines 31 on the calibration side 51 overlaps. Thus, when the reticle 7 and the auxiliary reticle 3 are installed in the mounting cavity 11, the calibration side 51 of the auxiliary ruler 5 can be attached to the reference surface 41, thereby ensuring that the first reference line 31 is aligned with the reference surface 41 (i.e., the first reference line 31 is located on the plane where the reference surface 41 is located), improving installation efficiency and installation accuracy.

[0027] Further optimization involves making the auxiliary ruler 5 transparent, such as transparent glass or acrylic sheet, to avoid it pressing against the lines. This allows for a clearer view of the relationship between the calibration side 51 and the reference line 31 on the auxiliary reticle 3 when the calibration side 51 is aligned with the first reference line 31 on the auxiliary reticle 3, ensuring precise alignment. Furthermore, the auxiliary ruler 5 has a bevel on the top surface of the calibration side 51, extending downwards from the side away from the calibration side 51. This means the calibration side 51 is thinner and has a pointed edge. This design improves the alignment accuracy between the auxiliary ruler 5 and the crosshair on the reticle 7, facilitates operation, and ensures a high degree of contact with the reference surface 41 of the reference plate 4, thereby improving the accuracy of the 45° angle between the crosshair on the reticle and the guide groove at the bottom of the image intensifier 8.

[0028] like Figure 1 As shown, the positioning support 1 is cylindrical, and the positioning cavity 11 is coaxially disposed on the positioning support 1. The positioning support 1 has two side plates 6 arranged circumferentially around the positioning cavity 11 (the side of the side plate 6 near the positioning cavity 11 is an arc surface, and when the auxiliary reticle 3 is installed, the arc surface fits circumferentially with the auxiliary reticle 3). The inner surfaces of the two side plates 6 and the reference plate 4 are all arc surfaces. Thus, there are gaps in the circumferential direction of the mounting cavity 11 between the two side plates 6 and between the side plates 6 and the reference plate 4. That is to say, the circumferential direction of the image intensifier 8 will not be completely surrounded, which makes it easier to put the image intensifier 8 into the positioning cavity 11 or to take the image intensifier 8 out of the positioning cavity 11.

[0029] In this application, the auxiliary reticle 3 is designed with the same outer diameter as the image intensifier 8. The first reference reticle 31 has the same shape as the crosshair of the reticle 6. In use, the reticle 7 and the auxiliary reticle 3 are bonded together with adhesive (nail polish), and the first reference reticle 31 is aligned with the crosshair of the reticle 7 (e.g., ...). Figure 2 (As shown).

[0030] Design an auxiliary ruler 5 and bond it to the auxiliary reticle 3 (with glue). Note that the tip of the glass strip (i.e., the calibration side 31) should be aligned with a first reference reticle 31.

[0031] In use, apply optical epoxy adhesive to the phosphor screen of the image intensifier, and then glue the previously glued reticle assembly (reticle 7, auxiliary reticle 3 and auxiliary ruler 5) to the phosphor screen of the image intensifier, making sure that the sharp edge of the auxiliary ruler 5 is pressed against the reference surface 41.

[0032] Then gently tap the reticle 7 and the auxiliary reticle 3 to separate them. Remove the auxiliary ruler 5 and the auxiliary reticle 3 to complete the precise bonding of the image intensifier and the reticle.

[0033] The above are merely preferred embodiments of this application, and the present invention is not limited to the above embodiments. It is understood that other improvements and variations that can be directly derived or conceived by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included within the protection scope of the present invention.

Claims

1. A combination sight tool for gluing a view enhancer to a reticle, the combination sight tool comprising: include: Positioning bearing (1), positioning plate (2) and auxiliary dividing plate (3); The positioning support (1) is provided with a cylindrical positioning cavity (11), and the positioning support (1) is provided with an elliptical through hole (12) circumferentially at the bottom of the positioning cavity (11), and the through hole (12) is located on a radial line of the positioning cavity (11). The positioning plate (2) is inserted through the through hole (12); The positioning support (1) is provided with a reference plate (4) circumferentially around the positioning cavity (11). A reference surface (41) is provided on one side of the reference plate (4). The axis of the positioning cavity (11) is located on the plane where the reference surface (41) is located. The angle between the radial line of the positioning cavity (11) where the through hole (12) is located and the plane where the reference surface (41) is located is 45 degrees. The auxiliary reticle (3) is annular. The inner side of the auxiliary reticle (3) is adapted to the reticle, and the outer side of the auxiliary reticle (3) is adapted to the circumferential direction of the positioning cavity (11). A first reference etched line (31) is provided on the auxiliary reticle (3), and the extension line of the first reference etched line (31) passes through the center of the auxiliary reticle (3).

2. The combination of an image intensifier and reticle bonded together as in claim 1, wherein: The top of the reference plate (4) is provided with a second reference etched line (42), the extension line of the second reference etched line (42) passes through the axis of the positioning cavity (11), and the second reference etched line (42) is parallel to the radial line of the positioning cavity (11) where the through hole (12) is located.

3. The combination of an image intensifier and reticle bonded together as in claim 1, wherein: There are four first reference lines (31), and the four first reference lines (31) are evenly distributed in a circle.

4. The combination of an image intensifier and reticle bonded together as in claim 3, wherein: It also includes an auxiliary ruler (5), which is disposed on the auxiliary reticle (3). One side of the auxiliary ruler (5) is a calibration side (51), and one of the first reference lines (31) on the calibration side (51) coincides with it.

5. The combination of an image intensifier and reticle bonded together as in claim 4, wherein: The auxiliary ruler (5) is made of transparent material.

6. A combination sight glass for an image intensifier and reticle according to claim 5, wherein: The auxiliary ruler (5) is made of transparent glass.

7. The combination of an image intensifier and reticle bonded together as in claim 4, wherein: The auxiliary ruler (5) has an inclined surface on the top surface of the calibration side (51), and the inclined surface extends downward from the side away from the calibration side (51) toward the calibration side (51).

8. The combined positioning fixture for bonding an image intensifier and a reticle according to claim 4, characterized in that: The auxiliary ruler (5) is glued to the auxiliary reticle (3).

9. The combination of an image intensifier and reticle bonded together as in claim 1, wherein: The positioning support (1) is cylindrical, and the positioning cavity (11) is coaxially disposed on the positioning support (1).

10. The combination of an image intensifier and reticle bonded together as in claim 9, wherein: The positioning support (1) has two side plates (6) arranged circumferentially around the positioning cavity (11), and the inner surfaces of the two side plates (6) and the reference plate (4) are all arc surfaces.

Images