Continuous zoom eyepiece
By designing a continuous zoom eyepiece using a fixed cylinder, a variable-magnetic rotary cylinder and a cam cylinder assembly, the problems of weak impact resistance, short service life and high production cost in the prior art are solved, and higher impact resistance is achieved and lower production costs.
Patent Information
- Application Number
- CN202420391033.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-29
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-02-28
AI Technical Summary
Existing zoom eyepieces for firearms have weak impact resistance, short service life, and high production costs in impact environments, which affect production and use costs.
A continuous zoom eyepiece is designed, using a fixed cylinder, a variable-magnetic rotary cylinder and a cam cylinder assembly, which is slidly connected to the fixed cylinder straight groove through the first handwheel guide nail, and the second handwheel guide nail is slidly connected to the rotary cylinder straight groove. The limit of the variable-magnification rotary cylinder and the adjustment of different magnifications are realized to enhance impact resistance.
It effectively improves the impact resistance of the zoom eyepiece, reduces production costs and assembly efficiency, and extends service life.
Smart Images
Figure CN222506656U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of eyepiece optical production, in particular to a continuous zoom eyepiece. Background Art
[0002] In the development of modern science and technology, zoom eyepieces, as an optical device, are widely used in various fields. It can achieve clear observation of objects near and far, providing great convenience for users. The zoom eyepiece is mainly composed of two convex lens groups, one of which is fixed, while the other can change its position by rotation, so as to achieve the magnification or reduction of the object. When the light passes through the first convex lens group, it will refract and focus on the second convex lens group. By adjusting the position of the second convex lens group, we can change the refraction angle and distance of the light, so as to achieve the effect of magnification or reduction. This design allows the zoom eyepiece to flexibly adjust the focus according to the needs of the user to achieve clear observation.
[0003] The zoom eyepiece designed in this utility model is mainly used in firearms, and its use environment is more harsh, and the impact level is as high as 1000G.
[0004] The zoom eyepiece currently used in firearms is usually fixed to the screw hole of the rotating barrel by a handwheel guide pin, and then cooperates with the internal cam rotating barrel circular hole to realize the function of continuous zoom. Its structural form is a rotating barrel fixing method, which poses risks in use environments that require impact resistance and has a short service life. The reliability of environmental adaptability impact tests in mass production is insufficient, which affects production costs and use costs. Utility Model Content
[0005] The purpose of the utility model is to overcome the above technical deficiencies, provide a continuous zoom eyepiece, and solve the technical problems of weak impact resistance, short service life and high production cost in the field of eyepiece optical production technology.
[0006] In order to achieve the above technical purpose, the technical solution of the utility model provides a continuous zoom eyepiece, comprising:
[0007] A fixed cylinder, a zoom rotating cylinder and a cam cylinder assembly; one end of the zoom rotating cylinder is rotatably connected to one end of the fixed cylinder; the cam cylinder assembly is built into the inner cavity of the fixed cylinder; the cam cylinder assembly includes an outer cam cylinder and an inner cam cylinder; the outer wall of the outer cam cylinder is circumferentially provided with a rotation groove and a first handwheel guide pin mounting inner hole; a fixed cylinder straight groove is formed on the outer wall of one end of the fixed cylinder close to the zoom rotating cylinder; a second handwheel guide pin mounting hole is formed on the outer wall of the fixed cylinder; the zoom rotating cylinder is fixedly connected to the outer cam cylinder via a first handwheel guide pin; the first handwheel guide pin is built into the fixed cylinder straight groove; the first handwheel guide pin is slidably connected to the fixed cylinder straight groove.
[0008] A second hand wheel guide pin is installed in the second hand wheel guide pin installation hole; a rotating cylinder straight groove is opened on the outer wall of the variable power rotating cylinder; the second hand wheel guide pin is built into the rotating cylinder straight groove; the second hand wheel guide pin is slidably connected to the rotating cylinder straight groove.
[0009] Compared with the prior art, the beneficial effects of the utility model include:
[0010] 1. Strong impact resistance: The variable power rotating cylinder and the fixed cylinder in the continuous zoom eyepiece provided by the utility model adopt a shaft hole rotation connection cooperation mode, and the second hand wheel guide pin is used to cooperate with the rotating cylinder straight groove to realize the limiting of the variable power rotating cylinder, and the first hand wheel guide pin and the driving guide pin are used to cooperate with the fixed cylinder straight groove, the outer cam rotating groove and the inner cam straight groove to realize different magnifications, thereby effectively improving the impact resistance of the continuous zoom eyepiece.
[0011] 2. Reduce production costs and improve assembly efficiency: The utility model provides an eccentrically designed backstop ring in the continuous zoom eyepiece. The eccentrically designed backstop ring can solve the problem that the eyepiece group and the eye mask interface are split into two parts because the backstop ring cannot be assembled from the front due to the large size of the eye mask interface of the eyepiece group. The eyepiece group and the eye mask are integrated into an integrated design, which can reduce production costs and assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the exploded structure of the continuous zoom eyepiece provided by the utility model;
[0013] Figure 2 It is a schematic diagram of the DD cross-sectional structure in the continuous zoom eyepiece provided by the utility model;
[0014] Figure 3 This is a schematic diagram of the installation structure of the first hand wheel guide pin and the fixed tube straight groove in the continuous zoom eyepiece provided by the utility model;
[0015] Figure 4 It is a schematic diagram of the exploded structure of the installation of the driving guide pin and the rotating groove of the outer cam tube in the continuous zoom eyepiece provided by the utility model;
[0016] Figure 5 It is a schematic diagram of the installation structure of the driving guide pin and the inner cam tube straight groove in the continuous zoom eyepiece provided by the utility model;
[0017] Figure 6 It is a schematic diagram of the installation structure of the first hand wheel guide pin and the second hand wheel guide pin and the zoom rotating cylinder in the continuous zoom eyepiece provided by the utility model;
[0018] Figure 7 The utility model is a schematic diagram of the front view structure of the anti-retraction pressure ring in the continuous zoom eyepiece provided by the utility model. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0020] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.
[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0022] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 This embodiment provides a continuous zoom eyepiece, including: a fixed barrel 1, a variable power rotating barrel 2, a cam barrel assembly 3 and an eyepiece group 4.
[0023] One end of the variable power rotating cylinder 2 is rotatably connected to one end of the fixed cylinder 1, and the cam cylinder assembly 3 is built into the inner cavity of the fixed cylinder 1. The cam cylinder assembly 3 includes an outer cam cylinder 31 and an inner cam cylinder 32. The outer wall of the outer cam cylinder 31 is circumferentially provided with an outer cam cylinder rotation groove 31a and a first hand wheel guide pin mounting inner hole 31b. The outer wall of one end of the fixed cylinder 1 close to the variable power rotating cylinder 2 is provided with a fixed cylinder straight groove 1a, and the outer wall of the fixed cylinder 1 is also provided with a second hand wheel guide pin mounting hole 1b. The variable power rotating cylinder 2 is fixedly connected to the outer cam cylinder 31 via a first hand wheel guide pin 5. The first hand wheel guide pin 5 is built into the fixed cylinder straight groove 1a, and the first hand wheel guide pin 5 is slidably connected to the fixed cylinder straight groove 1a.
[0024] Specifically, one end of the first handwheel guide pin 5 is inserted into the first handwheel guide pin mounting inner hole 31b to achieve a fixed connection with the outer cam tube 31, and the other end of the first handwheel guide pin 5 is inserted into the first handwheel guide pin mounting outer hole 2a to achieve a fixed connection with the zoom rotating tube 2.
[0025] Preferably, the variable power rotating cylinder 2 and the fixed cylinder 1 are rotatably connected by shaft-hole matching.
[0026] Preferably, the rotating cylinder straight groove 2b and the first hand wheel guide nail mounting outer hole 2a are arranged relative to each other at an angle of 180°.
[0027] Specifically, when the power-changing rotating cylinder 2 is rotated, the power-changing rotating cylinder 2 is fixedly connected to the outer cam cylinder 31 via the first hand wheel guide pin 5 to drive the outer cam cylinder 31 to rotate relative to the fixed cylinder 1 .
[0028] Furthermore, a second handwheel guide pin 6 is installed in the second handwheel guide pin installation hole 1b, a rotating cylinder straight groove 2b is opened on the outer wall of the variable magnification rotating cylinder 2, the second handwheel guide pin 6 is built into the rotating cylinder straight groove 2b, and the second handwheel guide pin 6 is slidably connected to the rotating cylinder straight groove 2b.
[0029] Preferably, the fixing cylinder straight groove 1a and the second hand wheel guide nail mounting hole 1b are arranged relative to each other at 180°.
[0030] Specifically, the rotating cylinder straight groove 2b is used to limit the rotation angle of the second hand wheel guide pin 6. Since the second hand wheel guide pin 6 is fixedly connected to the outer wall of the outer cam cylinder 31, when the second hand wheel guide pin 6 rotates to the two ends of the rotating cylinder straight groove 2b, the second hand wheel guide pin 6 cannot continue to expand and rotate. That is, the rotation angle of the outer cam cylinder 31 is limited.
[0031] Furthermore, the inner cam barrel 32 is built into the outer cam barrel 31, and the inner cam barrel 32 is rotatably connected to the outer cam barrel 31. The outer wall of the inner cam barrel 32 is provided with an inner cam barrel straight groove 31b, and the outer wall of the outer cam barrel 31 is provided with an outer cam barrel rotating groove 31a. The inner cavity of the inner cam barrel 32 is provided with a compensation group 7 and a magnification group 8.
[0032] Specifically, the inner cam barrel 32 and the outer cam barrel 31 are clearance-matched, and the inner cam barrel 32 and the outer cam barrel 31 are coaxially arranged.
[0033] Furthermore, the zoom group in the eyepiece is mainly used to provide different magnifications required for microscopic observation to meet different observation needs. The zoom group of the eyepiece is usually composed of several lenses, which can change the focal length by moving the position of the lens, thereby adjusting the magnification. When the position of the lens group changes, the magnification of the eyepiece will change.
[0034] Furthermore, the main function of the compensation group in the eyepiece is to correct the optical distortion generated when the eyepiece is used to ensure that the observed image has a high imaging quality. Due to the design and manufacturing process limitations of the eyepiece, they may introduce some optical distortions during the magnification process, such as astigmatism, field curvature and distortion. The compensation group is a special design in the eyepiece, which is usually composed of specific lenses to correct the above distortions. Specifically, the compensation group will be designed with a corresponding shape and focal length according to the characteristics of the imaging, so as to compensate for the distortion generated by the imaging during the magnification process of the eyepiece.
[0035] Furthermore, the compensation group 7 and the zoom group 8 are both driven and connected to the cam barrel assembly 3 through a driving guide pin 9, one end of the driving guide pin 9 is fixedly connected to the compensation group 7, one end of the adjacent driving guide pin 9 is fixedly connected to the zoom group 8, and the other end of the driving guide pin 9 fixedly connected to the compensation group 7 and the zoom group 8 is built into the outer cam barrel rotating groove 31a and the inner cam barrel straight groove 31b.
[0036] Furthermore, the driving guide pin 9 is built into the outer cam barrel rotating groove 31a and the inner cam barrel straight groove 31b, and the driving guide pin 9 is slidably connected with the outer cam barrel rotating groove 31a and the inner cam barrel straight groove 31b.
[0037] Specifically, when the magnification rotating cylinder 2 is rotated, the magnification rotating cylinder 2 drives the outer cam cylinder 31 to rotate. When the outer cam cylinder 31 rotates, the driving guide pin 9 is built into the outer cam cylinder rotating groove 31a, which drives the driving guide pin 9 to move. Since the driving guide pin 9 is also built into the inner cam straight groove 31b, the driving guide pin 9 can only move along the direction of the inner cam straight groove 31b. That is, when the magnification rotating cylinder 2 rotates, the magnification group 8 and the compensation group 7 move relative to each other, adjusting the distance between the two, and providing different magnification factors required for eyepiece observation to meet different observation needs.
[0038] Furthermore, the eyepiece group 4 is fixedly connected to one end of the fixed tube 1 away from the variable power rotating tube 2 , and a retaining pressure ring 10 is provided between the outer wall of the eyepiece group 4 and the inner wall of the eyepiece group 4 .
[0039] Furthermore, the anti-backlash pressure ring 10 is annular as a whole, the inner hole diameter of the anti-backlash pressure ring 10 is larger than the outer diameter of the multi-thread of the eyepiece group 4, and the inner diameter and outer diameter of the anti-backlash pressure ring 10 are eccentrically arranged.
[0040] Preferably, in the present embodiment, the inner hole diameter of the anti-recoil pressure ring 10 is 43.2 mm, and the inner hole and the outer hole of the anti-recoil pressure ring 10 are eccentrically arranged, and the eccentric distance between the center positions of the two is 0.5 mm. The outer diameter size of the multi-thread in the eyepiece group 4 is 43 mm, so the assembly direction can be changed from the right side of the lens barrel of the normal eyepiece group 4 to first inserting the anti-recoil pressure ring 10 into the lens barrel of the eyepiece group 4, and then locking the anti-recoil pressure ring 10, so as to achieve the diopter adjustment function of the eyepiece group 4 within the designed range. The anti-recoil pressure ring 10 with the eccentric design can solve the problem that the anti-recoil pressure ring 10 cannot be assembled from the front due to the excessive size of the eye mask interface of the eyepiece group 4, and the eye mask interface is split into two parts. The eyepiece group 4 and the eye mask are designed as an integrated whole, which can reduce production costs and assembly efficiency.
[0041] Working principle: The continuous zoom eyepiece provided by the utility model comprises a fixed barrel 1, a variable power rotating barrel 2, a cam barrel assembly 3 and an eyepiece group 31. One end of the variable power rotating barrel 2 is rotatably connected to one end of the fixed barrel 1, the cam barrel assembly 3 is built into the inner cavity of the fixed barrel 1, the cam barrel assembly 3 comprises an outer cam barrel 31 and an inner cam barrel 32, the outer wall of the outer cam barrel 31 is circumferentially provided with an outer cam barrel rotating groove 31a and a first hand wheel guide pin mounting inner hole 31b, the outer wall of the fixed barrel 1 close to one end of the variable power rotating barrel 2 is provided with a fixed barrel straight groove 1a, the outer wall of the fixed barrel 1 is provided with a second hand wheel guide pin mounting hole 1b, the variable power rotating barrel 2 is fixedly connected to the outer cam barrel 31 through a first hand wheel guide pin 5, the first hand wheel guide pin 5 is built into the fixed barrel straight groove 1a, and the first hand wheel guide pin 5 is slidably connected to the fixed barrel straight groove 1a.
[0042] Specifically, when the magnification rotating cylinder 2 is rotated, the magnification rotating cylinder 2 drives the outer cam cylinder 31 to rotate. When the outer cam cylinder 31 rotates, the driving guide pin 9 is built into the outer cam cylinder rotating groove 31a, which drives the driving guide pin 9 to move. Since the driving guide pin 9 is also built into the inner cam straight groove 31b, the driving guide pin 9 can only move along the direction of the inner cam straight groove 31b. That is, when the magnification rotating cylinder 2 rotates, the magnification group 8 and the compensation group 7 move relative to each other, adjusting the distance between the two, and providing different magnification factors required for eyepiece observation to meet different observation needs.
[0043] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.
Claims
1. A continuous zoom eyepiece, characterized in that: include: A fixed cylinder, a zoom rotating cylinder and a cam cylinder assembly; one end of the zoom rotating cylinder is rotatably connected to one end of the fixed cylinder; the cam cylinder assembly is built into the inner cavity of the fixed cylinder; the cam cylinder assembly includes an outer cam cylinder and an inner cam cylinder; the outer wall of the outer cam cylinder is circumferentially provided with an outer cam cylinder rotation groove and a first hand wheel guide pin mounting inner hole; a fixed cylinder straight groove is formed on the outer wall of one end of the fixed cylinder close to the zoom rotating cylinder; a second hand wheel guide pin mounting hole is formed on the outer wall of the fixed cylinder; the zoom rotating cylinder is fixedly connected to the outer cam cylinder via a first hand wheel guide pin; the first hand wheel guide pin is built into the fixed cylinder straight groove; the first hand wheel guide pin is slidably connected to the fixed cylinder straight groove.
2. The continuous zoom eyepiece according to claim 1, characterized in that: A second hand wheel guide pin is installed in the second hand wheel guide pin installation hole; a rotating cylinder straight groove is opened on the outer wall of the variable power rotating cylinder; the second hand wheel guide pin is built into the rotating cylinder straight groove; the second hand wheel guide pin is slidably connected to the rotating cylinder straight groove.
3. The continuous zoom eyepiece according to claim 2, characterized in that: The inner cam barrel is built into the outer cam barrel; the inner cam barrel is rotatably connected to the outer cam barrel; an inner cam barrel straight groove is provided on the outer wall of the inner cam barrel; an outer cam barrel rotating groove is provided on the outer wall of the outer cam barrel; a compensation group and a magnification group are provided in the inner cavity of the inner cam barrel.
4. The continuous zoom eyepiece according to claim 3, characterized in that: The compensation group and the zoom group are both driven and connected to the cam barrel assembly via a driving guide pin; one end of the driving guide pin is fixedly connected to the compensation group; one end of an adjacent driving guide pin is fixedly connected to the zoom group; the other end of the driving guide pin fixedly connected to the compensation group and the zoom group is built into the outer cam barrel rotating groove and the inner cam barrel straight groove.
5. The continuous zoom eyepiece according to claim 4, characterized in that: The driving guide pin is built into the outer cam barrel rotating groove and the inner cam barrel straight groove; the driving guide pin is slidably connected with the outer cam barrel rotating groove and the inner cam barrel straight groove.
6. The continuous zoom eyepiece according to claim 5, characterized in that: It also includes an eyepiece group; the eyepiece group is fixedly connected to one end of the fixed tube away from the variable power rotating tube; a back-stopping pressure ring is arranged between the outer wall of the eyepiece group and the inner wall of the eyepiece group.
7. The continuous zoom eyepiece according to claim 6, characterized in that: The backstop pressure ring The whole is annular; the inner diameter of the anti-retraction pressure ring is larger than the outer diameter of the multi-thread of the eyepiece assembly; The inner diameter and outer diameter of the retaining pressure ring are eccentrically arranged.