Variable magnification sight

Abstract

The present application relates to the field of sights, and provides a variable magnification sight including a scope, an inner tube, a variable magnification lens group, an eyepiece group, and a driver. The inner tube is mounted in the scope and can rotate in a circumferential direction about its own central axis, and the position of the inner tube relative to the axial direction of the scope is stable. The variable magnification lens group is mounted on the inner tube and is connected in conjunction with the inner tube, and the circumferential rotation of the inner tube can pull the variable magnification lens group to move along the axial direction of the inner tube. The eyepiece group is provided at an end of the scope close to the eye side. The driver is connected between the inner tube and the eyepiece group, and the driver, the eyepiece group, and the inner tube maintain synchronous circumferential rotation. The variable magnification sight can pull the driver and the inner tube to rotate synchronously in the circumferential direction by rotating the eyepiece group in the circumferential direction, thereby pulling and moving the variable magnification lens group along the axial direction of the inner tube, thereby achieving a variable magnification operation. The variable magnification sight can omit structures such as the variable magnification pin and the variable magnification groove of the scope, thereby ensuring the structural strength of the scope, reducing the risk of deformation or breakage of the scope, and guaranteeing the service life of the variable magnification sight.

Description

[Technical Field]

[0001] The present application relates to the technical field of sights, and more particularly to variable magnification sights. [Background technology]

[0002] A variable magnification sight typically includes a scope, an inner tube mounted within the scope and rotatable about its central axis, and a variable magnification lens group mounted within the inner tube. The scope has a variable magnification groove extending circumferentially, and the inner tube has a variable magnification pin that slides along the variable magnification groove. The variable magnification lens group is connected to the inner tube, and rotation of the inner tube pulls the variable magnification lens group along the axial direction of the inner tube. Based on this, the variable magnification pin is pulled and slid along the variable magnification groove, which pulls and rotates the inner tube, and further pulls and moves the variable magnification lens group along the axial direction of the inner tube, thereby adjusting the magnification of the variable magnification sight. However, the installation of the variable magnification groove weakens the local strength of the scope, making the variable magnification groove and its surrounding area more susceptible to deformation and even breakage when the scope is subjected to impact, shortening the service life of the variable magnification sight. Summary of the Invention [Problem to be solved by the invention]

[0003] The embodiments of the present application aim to provide a variable magnification sight that solves the problem in the prior art of having a short service life for variable magnification sights, because the installation of the variable magnification groove weakens the local strength of the scope, making the variable magnification groove and its surrounding area more susceptible to deformation and even breakage when the scope is subjected to impact. [Means for solving the problem]

[0004] In order to achieve the above object, the technical solution adopted by the present application is as follows: A variable magnification sight, Scope and an inner tube that is attached within the scope, can rotate in a circumferential direction around its central axis, and whose position relative to the axial direction of the scope is stable; a variable magnification lens group attached within the inner tube and connected to the inner tube in an interlocking manner, and the rotation of the inner tube in a circumferential direction pulls the variable magnification lens group, thereby moving the variable magnification lens group along the axial direction of the inner tube; an eyepiece lens group provided at an end of the scope close to the eye; and a driver connected between the inner tube and the eyepiece group, the driver, the eyepiece group, and the inner tube maintaining synchronous circumferential rotation.

[0005] In some embodiments, the variable magnification sight further includes an outer tube, the outer tube being mounted within the scope and mounted outside the inner tube, the position of the outer tube relative to the axial direction of the scope being stabilized, and the outer tube being restricted from rotating in a circumferential direction about its central axis; a curved groove extending spirally through the wall of one of the outer tube and the inner tube, and a linear groove extending along the axial direction of the other of the two tubes and penetrating the wall; The variable magnification lens group is provided with sliders that come into sliding contact with the curved grooves and the linear grooves.

[0006] In some embodiments, the outer tube is fixedly connected to the scope.

[0007] In some embodiments, the variable magnification sight further includes a first retaining ring provided within the scope and connected to the scope, the first retaining ring being secured to an end of the inner tube proximal to the eye.

[0008] In some embodiments, a ball head is provided in a protruding manner on the outer periphery of the end of the outer tube close to the eye side, a ball joint is provided in a recessed manner on the inner wall of the scope, and the ball head is hingedly connected to the ball joint; The variable magnification sight further includes an adjustment mechanism provided at the end of the outer tube away from the eye side, the adjustment mechanism being used to pull the outer tube and rotate it around the spherical center of the ball joint.

[0009] In some embodiments, a flange is formed on the outer periphery of the eye-side end of the inner tube, and the flange and the ball head are joined to form a complete ball head structure, which is jointly hingedly connected to the ball joint.

[0010] In some embodiments, the variable magnification sight further includes a retaining ring disposed within and connected to the scope, the retaining ring being pressed against the flange to limit disengagement of the flange and the ball head from the ball joint.

[0011] In some embodiments, the eye-proximal end of the inner tube does not protrude from the outer tube, and the ball head is a complete ball head structure that is solely hinged to the ball joint.

[0012] In some embodiments, the variable magnification sight further includes a retaining ring provided within the scope and connected to the scope, and a second retaining ring provided within the outer tube and connected to the outer tube, the retaining ring being pressed against the ball head to limit disengagement of the ball head from the ball joint, and the second retaining ring being secured to the end of the inner tube closer to the eye side.

[0013] In some embodiments, an anti-rotation groove is formed on the outer peripheral surface of the ball head and extends along the axial direction of the outer tube, a second screw hole is formed in the scope and extends along its radial direction and communicates with the anti-rotation groove, the variable magnification sight further includes an anti-rotation screw attached to the second screw hole, and the screw of the anti-rotation screw extends from the second screw hole and is positioned in the anti-rotation groove, thereby restricting circumferential rotation of the outer tube around its central axis.

[0014] In some embodiments, the thread of the locking screw abuts against two opposing groove walls of the locking groove.

[0015] In some embodiments, the outer tube has a radial plane that passes through the spherical center of the ball joint and is perpendicular to the central axis of the scope, and a contact point or contact line between the screw of the anti-rotation screw and a groove wall of the anti-rotation groove is located on the radial plane.

[0016] In some embodiments, the outer tube has a stop at the end away from the eye, and the stop is fastened to the inner tube at the end away from the eye.

[0017] In some embodiments, the driver has a drive tube fitted into the inner tube, a protrusion is provided on the outer tube surface of the drive tube, a position control groove is provided on the inner tube wall of the inner tube extending along its axial direction, an end of the position control groove closer to the eye side is connected to the outside of the inner tube, and the protrusion is positionally controlled by the position control groove.

[0018] In some embodiments, the protrusion abuts against two opposing groove walls of the position restriction groove.

[0019] In some embodiments, the driver includes a drive tube fitted into the inner tube, a protrusion is provided on an outer tube surface of the drive tube, a position restriction groove is provided on an inner tube wall of the inner tube and extends along the axial direction of the drive tube, an end of the position restriction groove close to the eye side communicates with the outside of the inner tube, the position of the protrusion is restricted by the position restriction groove, and the protrusion abuts against two opposing groove walls of the position restriction groove, The outer tube has a radial plane that passes through the spherical center of the ball joint and is perpendicular to the central axis of the scope, and the contact point or line of the protrusion with the groove wall of the position restriction groove is located on the radial plane.

[0020] In some embodiments, the variable magnification sight further includes a locking ring connected to the end of the scope closer to the eye, the locking ring pressing the driver against the end of the scope closer to the eye and stabilizing the position of the driver relative to the axial direction of the scope.

[0021] In some embodiments, the eyepiece lens group includes a cylinder connected to the driver, the cylinder fitted onto the outside of the driver, and a first screw hole extending radially through the outer cylindrical surface of the cylinder, and the variable magnification sight further includes a synchronous screw attached to the first screw hole, the synchronous screw abutting against the driver, thereby maintaining synchronous circumferential rotation of the cylinder and the driver. [Effects of the Invention]

[0022] The beneficial effects of the variable magnification sight according to the present invention are as follows.

[0023] In the variable magnification sight according to the embodiment of the present application, the eyepiece group and the inner tube are connected via a driver, so that the eyepiece group, the driver, and the inner tube maintain synchronous circumferential rotation. Based on this, when it is necessary to adjust the magnification of the variable magnification sight, the user can grasp the eyepiece group, which is located in an external environment and close to the user, and rotate the eyepiece group in a circumferential direction, thereby pulling the driver and the inner tube to rotate synchronously in a circumferential direction. As a result, the circumferential rotation of the inner tube moves the variable magnification lens group along the axial direction of the inner tube, thereby adjusting the magnification of the variable magnification sight. The magnification change operation is simple, convenient, and quick, and compared to conventional variable magnification sights, structures such as the variable magnification pin and variable magnification groove in the scope can be omitted, thereby effectively ensuring and improving the structural strength of the scope and effectively reducing the risk of the scope being easily deformed or even broken when subjected to impact due to localized weakening of the scope's strength.Furthermore, the scope is less likely to deform or break, and the service life of the variable magnification sight can be effectively guaranteed and extended.

[0024] In order to clearly describe the technical solutions in the embodiments of the present application, the following briefly describes the drawings that need to be used in the description of the embodiments or prior art. The drawings in the following description are only some embodiments of the present application, and it is obvious that those skilled in the art can further obtain other drawings based on these drawings without requiring creative work. [Brief explanation of the drawings]

[0025] [Figure 1] 1 is a structural schematic diagram of a variable magnification sight according to a first embodiment of the present invention. [Figure 2] FIG. 2 is an enlarged view of region A in FIG. [Figure 3] FIG. 2 is an enlarged view of region B in FIG. [Figure 4] 1 is an exploded schematic view of a driver and an inner tube according to a first embodiment of the present invention. [Figure 5] FIG. 10 is a structural schematic diagram of a variable magnification sight according to a second embodiment of the present invention. [Figure 6] FIG. 6 is an enlarged view of region C in FIG. 5. [Figure 7] 10 is a schematic view showing a state in which a protrusion and a position restricting groove are fitted together according to a second embodiment of the present invention. FIG. [Figure 8] FIG. 10 is a schematic diagram illustrating a state in which an adjustment mechanism, a scope, an inner tube, and an outer tube according to a second embodiment of the present invention are fitted together. [Figure 9] FIG. 10 is a structural schematic diagram of a variable magnification sight according to a third embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0026] In order to clarify the technical problems to be solved, the technical solutions and the beneficial effects of the present application, the present application will be described in detail below with reference to the drawings and examples. Note that the specific examples described herein are used only to interpret the present application and are not intended to limit the present application.

[0027] In the description of this application, the directions or positional relationships indicated by terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are based on the directions or positional relationships shown in the drawings, and are intended only to make the description of this application easier and simpler. They do not indicate or suggest that such devices or elements necessarily have a specific orientation or are constructed and operated in a specific orientation, and therefore are not intended to limit the application.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying the relative importance or number of technical features being indicated. Thus, a feature designated as "first" or "second" may explicitly or implicitly include one or more of the feature. In the description of this application, "plurality" means two or more than two, unless otherwise specified by a specific limitation.

[0029] In this application, unless otherwise clearly specified or limited, the terms "attached," "coupled," "connected," "fixed," etc. should be understood in a broad sense, and may refer to, for example, a fixed connection, a detachable connection, or an integral unit, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, an internal communication between two elements, or an interactive relationship between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on specific circumstances.

[0030] In this application, "eye side" means the end of the variable magnification sight that is closer to the shooter during the actual operation process, and "object side" means the end of the variable magnification sight that is closer to the target during the actual operation process, i.e., the end that is farther from the shooter.

[0031] In the prior art, variable magnification sights generally include a scope, an inner tube mounted within the scope and rotatable about its central axis, and a variable magnification lens group mounted within the inner tube. The scope has a variable magnification groove extending circumferentially, and the inner tube has a variable magnification pin that slides along the variable magnification groove. The variable magnification lens group is connected to the inner tube, and rotation of the inner tube pulls the variable magnification lens group along the axial direction of the inner tube. Based on this, pulling the variable magnification pin and sliding it along the variable magnification groove pulls and rotates the inner tube, which in turn pulls and moves the variable magnification lens group along the axial direction of the inner tube, thereby adjusting the magnification of the variable magnification sight. However, the installation of the variable magnification groove weakens the local strength of the scope, making it more susceptible to deformation and even breakage of the variable magnification groove and its vicinity when the scope is subjected to impact, shortening the service life of the variable magnification sight. In particular, there is a positive correlation between the extension width of the magnification variable groove and the magnification adjustment range of the magnification variable sight, and as the extension width of the magnification variable groove increases, the local strength of the magnification variable groove and its surrounding area in the scope becomes weaker and weaker, resulting in an increased risk of deformation and even breakage of the magnification variable groove and its surrounding area when the scope is subjected to impact.

[0032] As a result, some embodiments of the present application provide a variable magnification sight that, compared to conventional variable magnification sights, can omit structures such as variable magnification pins and variable magnification grooves in the scope, thereby effectively ensuring and improving the structural strength of the scope, effectively reducing the risk of the scope being easily deformed or even broken when subjected to impact due to localized weakening of the scope's strength, and further making the scope less likely to deform or break, effectively guaranteeing and extending the service life of the variable magnification sight.

[0033] Hereinafter, specific implementations of the present invention will be described in detail with reference to specific examples. [Example]

[0034] 1, 2, and 3, some embodiments of the present application provide a variable magnification sight including a scope 10, an inner tube 20, a variable magnification lens group 30, an eyepiece group 40, and a driver 50. The inner tube 20 is mounted within the scope 10 and is rotatable in a circumferential direction about its own central axis, stabilizing the position of the inner tube 20 relative to the axial direction of the scope 10. The variable magnification lens group 30 is mounted within the inner tube 20 and operatively connected to the inner tube 20, such that the rotation of the inner tube 20 in the circumferential direction can pull the variable magnification lens group 30 to move along the axial direction of the inner tube 20. The eyepiece group 40 is provided at the end of the scope 10 closer to the eye. The driver 50 is connected between the inner tube 20 and the eyepiece group 40, maintaining synchronous rotation in the circumferential direction among the driver 50, the eyepiece group 40, and the inner tube 20.

[0035] The inner tube 20 is attached inside the scope 10, and the scope 10 can reliably protect the structures inside it, such as the inner tube 20. The position of the inner tube 20 in the axial direction of the scope 10 is stable, that is, movement of the inner tube 20 along the axial direction of the scope 10 is restricted. However, the inner tube 20 can rotate in the circumferential direction around the central axis of the inner tube 20.

[0036] The variable magnification lens group 30 is mounted within the inner tube 20 to achieve a variable magnification effect. The variable magnification lens group 30 is operatively connected to the inner tube 20, and thus can move along the axial direction of the inner tube 20 due to the pulling force of the circumferential rotation of the inner tube 20. The magnification of the variable magnification sight can be adjusted by adjusting the position of the variable magnification lens group 30 relative to the axial direction of the inner tube 20. Here, the variable magnification lens group 30 includes a lens holder 32 movably mounted within the inner tube 20 and at least one lens 33 mounted within the lens holder 32.

[0037] The eyepiece group 40 is provided at the end of the scope 10 close to the eye, and is used to magnify the final image and transmit it to the human eye. In this embodiment, the specific structure of the eyepiece group 40 is not limited.

[0038] The driver 50 is disposed between the inner tube 20 and the eyepiece group 40. One end of the driver 50 is connected to the end of the inner tube 20 closest to the eye, and is not limited to a fixed or detachable connection, but may be, for example, a screw connection, a locking groove fitting, or the like, and this embodiment is not limited to these. The other end of the driver 50 is connected to the eyepiece group 40, and the driver 50 and the eyepiece group 40 are preferably connected to each other by a detachable connection, such as by fastening with a screw, but of course, a fixed connection may also be used, and this embodiment is not limited to these.

[0039] Based on this, the sequential connection relationship between the eyepiece group 40, the driver 50, and the inner tube 20 allows the eyepiece group 40, the driver 50, and the inner tube 20 to maintain synchronous circumferential rotation. Thus, when the magnification of the variable magnification sight needs to be adjusted, the user simply grasps the eyepiece group 40, which is located in an external environment and close to the user, and rotates the eyepiece group 40 in a circumferential direction, thereby pulling the driver 50 and the inner tube 20 to rotate synchronously in a circumferential direction. As a result, the circumferential rotation of the inner tube 20 pulls the variable magnification lens group 30 to move along the axial direction of the inner tube 20, thereby adjusting the magnification of the variable magnification sight. The magnification change operation is simple, convenient, and quick, and compared to conventional variable magnification sights, structures such as the variable magnification pin and variable magnification groove in the scope 10 can be omitted, thereby effectively ensuring and improving the structural strength of the scope 10 and effectively reducing the risk of deformation and even breakage of the scope 10 when it is subjected to impact due to localized weakening of the strength of the scope 10. Furthermore, the scope 10 is less likely to deform or break, and the service life of the variable magnification sight can be effectively guaranteed and extended.

[0040] Based on the above structure, the variable magnification sight can form an optical path that passes from the object side through the variable magnification lens group 30, the driver 50, and the eyepiece group 40, in that order, to reach the eye side. In this way, visible light can pass along the optical path through the variable magnification lens group 30, the driver 50, and the eyepiece group 40, in that order, and enter the human eye. This effectively ensures the aiming performance of the variable magnification sight, and does not affect the aiming performance of the variable magnification sight when the magnification is changed.

[0041] In this embodiment, no additional adjustment ring is required, and the eyepiece group 40 is directly used to form the user's grip structure and the circumferentially rotating variable magnification adjustment structure, thereby effectively reducing the number of components in the variable magnification sight structure, effectively simplifying the structure of the variable magnification sight, and effectively reducing the cost of the variable magnification sight.

[0042] To summarize, in the variable magnification sight according to the embodiment of the present application, the eyepiece group 40 and the inner tube 20 are connected via the driver 50, and thus the eyepiece group 40, driver 50, and inner tube 20 maintain synchronous circumferential rotation. Based on this, when it is necessary to adjust the magnification of the variable magnification sight, the user grasps the eyepiece group 40, which is located in an external environment and close to the user, and rotates the eyepiece group 40 in a circumferential direction, thereby pulling and rotating the driver 50 and inner tube 20 in a synchronous circumferential direction. As a result, the circumferential rotation of the inner tube 20 pulls and moves the variable magnification lens group 30 along the axial direction of the inner tube 20, thereby achieving the adjustment of the magnification of the variable magnification sight. The magnification change operation is simple, convenient, and quick, and compared to conventional variable magnification sights, structures such as the variable magnification pin and variable magnification groove in the scope 10 can be omitted, thereby effectively ensuring and improving the structural strength of the scope 10 and effectively reducing the risk of the scope 10 being easily deformed or even broken when subjected to impact due to localized weakening of the strength of the scope 10. Furthermore, the scope 10 is less likely to deform or break, and the service life of the variable magnification sight can be effectively guaranteed and extended.

[0043] 1, 2, and 3, in some embodiments of the present application, the variable magnification sight further includes an outer tube 60, which is attached inside the scope 10 and attached outside the inner tube 20, stabilizing the position of the outer tube 60 in the axial direction of the scope 10 and restricting the outer tube 60 from rotating in the circumferential direction around its own central axis, and a curved groove 21 extending spirally and penetrating the tube wall is provided in the tube wall of one of the outer tube 60 and the inner tube 20, and a linear groove 61 extending along the axial direction and penetrating the tube wall is provided in the tube wall of the other of the two, and a slider 31 is provided in sliding contact with the curved groove 21 and the linear groove 61.

[0044] The outer tube 60 is attached inside the scope 10 and is reliably protected by the scope 10. The position of the outer tube 60 in the axial direction of the scope 10 is stabilized, that is, the movement of the outer tube 60 along the axial direction of the scope 10 is restricted. The rotation of the outer tube 60 in the circumferential direction around the central axis of the outer tube 60 is also restricted.

[0045] The inner pipe 20 is mounted within the outer pipe 60. Within the outer pipe 60, the inner pipe 20 is restricted from moving axially, but is able to rotate circumferentially about its central axis.

[0046] In an optional embodiment, the wall of the outer tube 60 has curved grooves 21, while the wall of the inner tube 20 has straight grooves 61. In another optional embodiment, the wall of the outer tube 60 has straight grooves 61, while the wall of the inner tube 20 has curved grooves 21.

[0047] A slider 31 is provided on the outside of the variable magnification lens group 30, and the slider 31 may be attached to a lens holder 32 of the variable magnification lens group 30. The slider 31 may be, but is not limited to, a sliding pin. The slider 31 is in sliding contact with both the curved groove 21 and the straight groove 61, i.e., the slider 31 is located at the intersection of the curved groove 21 and the straight groove 61.

[0048] Based on this, a simple, reliable and effective interlocking connection between the variable magnification lens group 30 and the inner tube 20 can be established by the curved grooves 21 and straight grooves 61 provided respectively on the outer tube 60 and the inner tube 20, and the slider 31 that slides into both the curved grooves 21 and the straight grooves 61. In this way, the variable magnification lens group 30 can move along the axial direction of the inner tube 20 by being pulled by the circumferential rotation of the inner tube 20. Specifically, when the user rotates the eyepiece group 40 in the circumferential direction, thereby pulling the driver 50 and inner tube 20 and rotating them synchronously in the circumferential direction, the inner tube 20 rotates in the circumferential direction about its own central axis, but the outer tube 60 does not rotate in the circumferential direction about its own central axis, so the curved groove 21 and the straight groove 61 rotate relative to each other, resulting in a change in the position of the intersection of the curved groove 21 and the straight groove 61. This causes the slider 31, which is in sliding contact with both the curved groove 21 and the straight groove 61, to move along the axial direction of the inner tube 20, which in turn pulls the variable magnification lens group 30 and moves it along the axial direction of the inner tube 20, thereby achieving a magnification change operation. The magnification change operation is simple, smooth, convenient, and quick.

[0049] 1, 2 and 3, in some embodiments of the present application, outer tube 60 is fixedly connected to scope 10.

[0050] Note that a strong and fixed connection between the outer tube 60 and the scope 10 can be achieved by, but not limited to, screw connection or adhesive bonding. As shown in Figures 1, 2, and 3, in an optional embodiment, the variable magnification sight further includes a first retaining ring 70 and a third retaining ring 140 that are entirely provided within the scope 10 and entirely connected to the scope 10, the first retaining ring 70 being positioned and connected to the end of the outer tube 60 closer to the eye side, and the third retaining ring 140 being positioned and connected to the end of the outer tube 60 farther from the eye side. This embodiment does not limit the connection form between the first retaining ring 70 and the scope 10 and the outer tube 60, or the connection form between the third retaining ring 140 and the scope 10 and the outer tube 60.

[0051] By adopting the above solution, the outer tube 60 is fixedly connected to the scope 10, thereby reliably stabilizing the position of the outer tube 60 relative to the axial direction of the scope 10, thereby reliably restricting the movement of the outer tube 60 along the axial direction of the scope 10 and reliably restricting the rotation of the outer tube 60 in the circumferential direction around its central axis.

[0052] 1, 2, and 3, in some embodiments of the present application, the variable magnification sight further includes a first retaining ring 70 that is provided inside the scope 10 and connected to the scope 10, and the first retaining ring 70 is secured to the end of the inner tube 20 that is closer to the eye side. This embodiment does not limit the connection method between the first retaining ring 70 and the scope 10.

[0053] By adopting the above-described solution, the first retaining ring 70 connected to the scope 10 positions and stops the end of the inner tube 20 close to the eye side, thereby reliably restricting movement of the inner tube 20 in a direction closer to the eye side, which is then fitted into a position restriction structure (for example, the following retaining portion 64) at the end of the inner tube 20 away from the eye side, reliably stabilizing the position of the inner tube 20 relative to the axial direction of the outer tube 60, thereby reliably restricting movement of the inner tube 20 along the axial direction of the outer tube 60. Furthermore, the fact that the first retaining ring 70 positions and stops the end of the inner tube 20 close to the eye side does not affect the circumferential rotation of the inner tube 20 about its own central axis.

[0054] Naturally, in other optional embodiments, other positioning structures may be employed to position and regulate the position of the end of the inner tube 20 closer to the eye, provided that the rotation of the inner tube 20 in the circumferential direction around its own central axis is not affected, but this embodiment is not limited to these.

[0055] 1, 2, and 3, in some embodiments of the present application, a stop portion 64 is provided at the end of the outer tube 60 away from the eye side, and the stop portion 64 is fastened to the end of the inner tube 20 away from the eye side. Here, the stop portion 64 is formed by projecting inward from the wall of the inner tube 20 of the outer tube 60.

[0056] By adopting the above solution, the stopper 64 may be formed by projecting inward at the end of the outer tube 60 away from the eye side, thereby positioning and stopping the end of the inner tube 20 away from the eye side by the stopper 64, reliably restricting movement of the inner tube 20 in the direction away from the eye side, and thereby fitting into a position restriction structure (e.g., the above-mentioned first stop ring 70) at the end of the inner tube 20 closer to the eye side, reliably stabilizing the position of the inner tube 20 in the axial direction of the outer tube 60, thereby reliably restricting movement of the inner tube 20 along the axial direction of the outer tube 60. Furthermore, the fact that the stopper 64 positions and stops the end of the inner tube 20 away from the eye side does not affect the circumferential rotation of the inner tube 20 about its central axis.

[0057] Naturally, in other optional embodiments, other position restriction structures may be employed to restrict the position of the end of the inner tube 20 away from the eye side, provided that the rotation of the inner tube 20 in the circumferential direction about its own central axis is not affected. For example, with reference to the first retaining ring 70, a retaining ring may also be provided at the end of the inner tube 20 away from the eye side, thereby restricting the position of the end of the inner tube 20 away from the eye side. This embodiment is not limited to these.

[0058] In contrast to other embodiments, in this embodiment, a stopper 64 is formed by directly projecting from the end of the outer tube 60 away from the eye side to position and stop the end of the inner tube 20 away from the eye side, which effectively reduces the number of structural components and effectively saves assembly steps, thereby ensuring and improving the convenience and efficiency of assembling the variable magnification sight.

[0059] 1, 2 and 4, in some embodiments of the present application, the driver 50 has a drive tube 51 fitted into the inner tube 20, a protrusion 511 is provided on the outer tube surface of the drive tube 51, a position restriction groove 23 is provided on the wall of the inner tube 20 and extends along its axial direction, the end of the position restriction groove 23 closest to the eye side communicates with the outside of the inner tube 20, and the protrusion 511 is positionally restricted by the position restriction groove 23.

[0060] Alternatively, a drive tube 51 may be provided at the end of the driver 50 connected to the inner tube 20, and the drive tube 51 may be fitted inside the end of the inner tube 20 closer to the eye side. A protrusion 511 is provided on the outer cylindrical surface of the driver tube 51, and a position restricting groove 23 is provided correspondingly on the wall of the inner tube 20. When the driver tube 51 is fitted into the inner tube 20, the protrusion 511 can slide into the position restricting groove 23 from the end closer to the eye side of the position restricting groove 23, and is finally restricted in position by the position restricting groove 23. In this way, the driver 50 and the inner tube 20 are detachably connected, and after connection, the driver 50 and the inner tube 20 can maintain synchronous circumferential rotation.

[0061] Here, one or more position restricting grooves 23 may be provided along the circumferential direction of the wall of the inner tube 20, and each position restricting groove 23 can restrict the position of one or more protrusions 511, but this embodiment is not limited thereto. Preferably, when a plurality of position restricting grooves 23 are provided, the plurality of position restricting grooves 23 are arranged in an array along the circumferential direction of the wall of the inner tube 20, which helps to balance and optimize the distribution of the connection points between the drive tube 51 and the inner tube 20, thereby realizing a balance in the distribution of the acting forces between the drive tube 51 and the inner tube 20 and improving the connection reliability and connection strength between the drive tube 51 and the inner tube 20.

[0062] Here, the shape of the protrusion 511 is not limited to a cylindrical body, a polygonal cylinder, or a hemisphere, and this embodiment does not limit these.

[0063] By adopting the above solution, the driver 50 is fitted into the end of the inner tube 20 closest to the eye side via the driver barrel 51, and is fitted into the position-restricting groove 23 on the wall of the inner tube 20 via the protrusion 511 on the outer surface of the driver barrel 51, thereby establishing a simple, quick, and reliable detachable connection between the driver 50 and the inner tube 20, and maintaining synchronous circumferential rotation between the driver 50 and the inner tube 20. Based on this, when a user rotates the eyepiece group 40 in the circumferential direction to pull and rotate the driver 50 in the circumferential direction, the driver 50 reliably pulls and rotates the inner tube 20 in the circumferential direction via the position restriction between the protrusion 511 and the position-restricting groove 23, and further pulls and moves the variable magnification lens group 30 along the axial direction of the inner tube 20, thereby achieving a magnification change operation.

[0064] Of course, in other optional embodiments, the connection between the driver 50 and the inner tube 20 can be realized in other ways, and this embodiment is not limited thereto.

[0065] 1, 2 and 4, in some embodiments of the present application, the protrusion 511 abuts against two opposing groove walls of the position restriction groove 23.

[0066] By adjusting the dimension of the protrusion 511 in the groove width direction of the position restriction groove 23 to the groove width of the position restriction groove 23, the protrusion 511 can be made to abut against two opposing groove walls of the position restriction groove 23. The contact between the protrusion 511 and the groove wall of the position restriction groove 23 may be point contact, line contact, or surface contact, and this embodiment is not limited to these.

[0067] By adopting the above solution, the protrusion 511 abuts against the two opposing groove walls of the position limiting groove 23, thereby eliminating any fitting gap between the protrusion 511 and the two opposing groove walls of the position limiting groove 23. Based on this, when the driver 50 rotates in the circumferential direction, the driver 50 does not need to compensate for the fitting gap between the protrusion 511 and the two opposing groove walls of the position limiting groove 23, and can directly pull the inner tube 20 to rotate synchronously in the circumferential direction through the position limit between the protrusion 511 and the position limiting groove 23, thereby ensuring and improving the rotational synchronization between the driver 50 and the inner tube 20 and favorably ensuring and improving the accuracy of the magnification adjustment.

[0068] Referring to Figures 1 and 2, in some embodiments of the present application, the variable magnification sight further includes a locking ring 120 connected to the end of the scope 10 closer to the eye side, and the locking ring 120 presses the driver 50 against the end of the scope 10 closer to the eye side, stabilizing the position of the driver 50 relative to the axial direction of the scope 10.

[0069] The locking ring 120 may be connected to the end of the scope 10 closer to the eye side by using a screw connection or adhesive bonding method, but is not limited to these, and this embodiment is not limited to these.

[0070] The lock retainer ring 120 presses the driver 50 and holds it against the end of the scope 10 closer to the eye, stabilizing the position of the driver 50 in the axial direction of the scope 10 and thereby reliably restricting movement of the driver 50 along the axial direction of the scope 10. Furthermore, the pressing and position regulation of the lock retainer ring 120 against the driver 50 does not affect the synchronous rotation of the driver 50 and the inner tube 20 in the circumferential direction.

[0071] Of course, in other optional embodiments, other methods may be used to restrict and position the driver 50 and stabilize the position of the driver 50 relative to the axial direction of the scope 10, provided that the synchronized rotation of the driver 50 and the inner tube 20 in the circumferential direction is not affected. This embodiment is not limited to these.

[0072] 1 and 2, in some embodiments of the present application, the eyepiece group 40 includes a cylindrical body 41 connected to a driver 50, the cylindrical body 41 is fitted onto the outside of the driver 50, and a first screw hole 411 is provided on the outer cylindrical surface of the cylindrical body 41, penetrating along its radial direction, and the variable magnification sight further includes a synchronization screw 130 attached to the first screw hole 411, the synchronization screw 130 abutting against the driver 50, and thus the cylindrical body 41 and the driver 50 maintain synchronous circumferential rotation.

[0073] The eyepiece group 40 includes a cylindrical body 41, which can be fitted to the outer periphery of the end of the driver 50 that is connected to the eyepiece group 40. A first screw hole 411 is provided on the outer cylindrical surface of the cylindrical body 41, penetrating radially through to the inner cylindrical surface of the cylindrical body 41. The synchronous screw 130 can be screwed into the outer opening of the first screw hole 411 until the screw of the synchronous screw 130 extends from the inner opening of the first screw hole 411 and abuts against the outer peripheral surface of the driver 50. Based on this connection between the synchronous screw 130, the driver 50, and the cylindrical body 41, the cylindrical body 41 and the driver 50 can maintain synchronous circumferential rotation.

[0074] Here, one or more first screw holes 411 may be provided along the circumferential direction of the outer cylindrical surface of the cylindrical body 41, and one synchronous screw 130 is attached to each first screw hole 411. Preferably, when a plurality of first screw holes 411 are provided, the plurality of first screw holes 411 are arranged in an array along the circumferential direction of the outer cylindrical surface of the cylindrical body 41. Such an arrangement helps to balance and optimize the distribution of the connection points between the driver 50 and the cylindrical body 41, thereby achieving a balance in the distribution of the acting forces between the driver 50 and the cylindrical body 41 and improving the connection reliability and strength between the driver 50 and the eyepiece group 40.

[0075] By adopting the above solution, the eyepiece group 40 can be fitted to the driver 50 via the barrel 41 and abut against the outer circumferential surface of the driver 50 via the synchronous screw 130 attached to the first screw hole 411, thereby establishing a simple, quick, and reliable detachable connection between the eyepiece group 40 and the driver 50. Based on this, when the user rotates the eyepiece group 40 in the circumferential direction, the eyepiece group 40 reliably synchronously rotates the driver 50 in the circumferential direction via the connection between the barrel 41, the synchronous screw 130, and the driver 50, which further pulls the inner tube 20 to rotate in the circumferential direction, and pulls the variable magnification lens group 30 to move along the axial direction of the inner tube 20, thereby achieving the variable magnification operation.

[0076] Of course, in other optional embodiments, the connection between the eyepiece group 40 and the driver 50 can be realized in other ways, and this embodiment is not limited thereto. [Example]

[0077] The difference between this embodiment and the first embodiment is as follows.

[0078] Referring to Figures 5, 6, and 8, in some embodiments of the present application, a ball head 62 is protruded from the outer periphery of the end of the outer tube 60 closer to the eye side, a ball joint 11 is recessed into the inner wall of the scope 10, the ball head 62 is hingedly connected to the ball joint 11, and the variable magnification sight further includes an adjustment mechanism 80 provided at the end of the outer tube 60 farther from the eye side, and the adjustment mechanism 80 is used to pull the outer tube 60 to rotate it around the spherical center of the ball joint 11.

[0079] Furthermore, the ball head 62 of the outer tube 60 is hingedly connected to the ball joint 11 of the scope 10, and its detachment from the ball joint 11 is restricted. Based on this, when a force is applied to the end of the outer tube 60 away from the eye side, the outer tube 60 can rotate gently and reliably within a certain range around the spherical center of the ball joint 11.

[0080] The adjustment mechanism 80 is drilled into and attached to the scope 10, located at the end of the outer tube 60 remote from the eye side, and can be used to apply a force to the end of the outer tube 60 remote from the eye side, thereby pulling the outer tube 60 and causing it to controllably rotate about the spherical center of the ball joint 11. This allows for simple and controllable adjustment and accurate alignment of the optical axis, achieving the goals of adjustment and gun correction, thereby effectively eliminating assembly errors and ensuring and improving the aiming accuracy of the variable magnification sight.

[0081] Here, the gun correction operation and the magnification operation are adjusted so that they do not interfere with each other.

[0082] In this embodiment, the specific structure of the adjustment mechanism 80 is not limited. For example, as shown in FIG. 8 , in an optional embodiment, the adjustment mechanism 80 includes a trajectory adjustment module 81, a wind deflection adjustment module 82, and a reset structure 83. The trajectory adjustment module 81 is disposed on the vertical side of the outer tube 60, and the wind deflection adjustment module 82 is disposed on the horizontal side of the outer tube 60. The angle between the reset structure 83 and the trajectory adjustment module 81 is equal to the angle between the reset structure 83 and the wind deflection adjustment module 82. Based on this, when the trajectory adjustment module 81 applies a vertical force to the end of the outer tube 60 away from the eye side, the outer tube 60 can swing vertically around the center of the ball joint 11 based on the vertical force applied by the trajectory adjustment module 81, thereby realizing precise adjustment of the trajectory compensation distance and the vertical positions of the aim point and the optical axis. When the wind deflection adjustment module 82 applies a horizontal force along the horizontal direction to the end of the outer tube 60 away from the eye side, the outer tube 60 can swing horizontally around the spherical center of the ball joint 11 based on the horizontal force applied by the wind deflection adjustment module 82, thereby realizing precise adjustment of the wind deflection compensation distance and precise adjustment of the horizontal positions of the aim point and the optical axis. Meanwhile, the reset structure 83 can apply a counterbalancing force to the end of the outer tube 60 away from the eye side, the direction of the counterbalancing force being opposite to the direction of the resultant force of the vertical force and the horizontal force, thereby gently stabilizing the outer tube 60 in the adjusted state. Here, the reset structure 83 can adopt, but is not limited to, an elastic sheet or a spring.

[0083] 8 , in another optional embodiment, the adjustment mechanism 80 includes a trajectory adjustment module 81, a wind deflection adjustment module 82, and two reset structures 83 provided corresponding to the trajectory adjustment module 81 and the wind deflection adjustment module 82, respectively. The trajectory adjustment module 81 is provided on the vertical side of the outer tube 60, and the wind deflection adjustment module 82 is provided on the horizontal side of the outer tube 60. Based on this, when the trajectory adjustment module 81 applies a vertical force along the vertical direction to the end of the outer tube 60 away from the eye side, the outer tube 60 can swing vertically around the spherical center of the ball joint 11 based on the vertical force applied by the trajectory adjustment module 81. At the same time, the reset structure 83 corresponding to the trajectory adjustment module 81 can correspondingly feed back a vertical balancing force opposite to the direction of the vertical force, thereby gently stabilizing the outer tube 60 in the adjusted state, thus realizing precise adjustment of the trajectory compensation distance and precise adjustment of the vertical positions of the aim point and the optical axis. When the wind deflection adjustment module 82 applies a horizontal force along the horizontal direction to the end of the outer tube 60 away from the eye side, the outer tube 60 can swing horizontally around the spherical center of the ball joint 11 based on the horizontal force applied by the wind deflection adjustment module 82. At the same time, the reset structure 83 corresponding to the wind deflection adjustment module 82 can correspondingly feed back a horizontal balancing force opposite to the direction of the horizontal force, thereby gently stabilizing the outer tube 60 in the adjusted state, thus realizing precise adjustment of the wind deflection compensation distance and precise adjustment of the horizontal positions of the aiming point and the optical axis. Here, the reset structure 83 can adopt, but is not limited to, an elastic sheet or a spring.

[0084] 5 and 6, in some embodiments of the present application, a flange 22 is protruded from the outer periphery of the end of the inner tube 20 closest to the eye side, and the flange 22 and the ball head 62 are joined to form a complete ball head 62 structure, which is jointly hingedly connected to the ball joint 11.

[0085] The ball head 62 of the outer tube 60 is one part of the ball head 62 structure, and the ball head 62 of the inner tube 20 is another part of the ball head 62 structure. The flange 22 and the ball head 62 can be joined to form a complete ball head 62 structure, which is jointly hingedly connected to the ball joint 11 of the scope 10. The flange 22 and the ball head 62 are restricted from coming off the ball joint 11. This allows the outer tube 60 and the inner tube 20 to rotate gently and reliably within a certain range around the spherical center of the ball joint 11 when force is applied to the end of the outer tube 60 away from the eye side. This arrangement also facilitates the achievement of adjustment and gun correction purposes.

[0086] 5 and 6 , in some embodiments of the present application, the variable magnification sight further includes a retaining ring 90 that is provided inside the scope 10 and connected to the scope 10, and the retaining ring 90 is pressed against the flange 22 to restrict the flange 22 and the ball head 62 from being separated from the ball joint 11. This embodiment does not limit the connection method between the retaining ring 90 and the scope 10.

[0087] Based on the previous embodiment, the retaining ring 90 connected to the scope 10 can press and restrict the flange 22 to restrict its position, and the flange 22 abuts against and restricts the position of the ball head 62, thereby reliably restricting the flange 22 and ball head 62 from coming off the ball joint 11. At the same time, the retaining ring 90 presses and restricts the flange 22 and ball head 62 to the ball joint 11, which can effectively stabilize the position of the inner tube 20 relative to the axial direction of the scope 10 and the position of the outer tube 60 relative to the axial direction of the scope 10, effectively restricting movement of the inner tube 20 along the axial direction of the scope 10 and movement of the outer tube 60 along the axial direction of the scope 10. Furthermore, the position restriction of the retaining ring 90 on the flange 22 and ball head 62 does not affect the rotation of the flange 22 and ball head 62 at the ball joint 11, nor does it affect the circumferential rotation of the inner tube 20 about its own central axis.

[0088] Of course, in other optional embodiments, other methods may be used to restrict the positions of the flange 22 and the ball head 62 and limit their separation from the ball joint 11, provided that the rotation of the flange 22 and the ball head 62 in the ball joint 11 is not affected and the circumferential rotation of the inner tube 20 about its own central axis is not affected. This embodiment is not limited to these.

[0089] Optionally, the end of the inner tube 20 away from the eye side is further positioned and stopped by a stop portion 64 protruding from the end of the outer tube 60 away from the eye side, thereby further stabilizing the position of the inner tube 20 relative to the axial direction of the outer tube 60 and further restricting movement of the inner tube 20 along the axial direction of the outer tube 60.

[0090] 5 and 6, in some embodiments of the present application, an anti-rotation groove 621 is formed on the outer peripheral surface of the ball head 62, extending along the axial direction of the outer tube 60; a second screw hole 12 is formed in the scope 10, extending along its radial direction, and communicating with the anti-rotation groove 621; the variable magnification sight further includes an anti-rotation screw 110 attached to the second screw hole 12; the screw of the anti-rotation screw 110 extends from the second screw hole 12 and is positioned in the anti-rotation groove 621, thereby restricting the outer tube 60 from rotating in a circumferential direction around its own central axis.

[0091] An anti-rotation groove 621 is provided on the outer peripheral surface of the ball head 62, and the anti-rotation groove 621 is formed to extend in the axial direction of the outer tube 60. A second screw hole 12 is provided in the scope 10, and the second screw hole 12 extends radially through the scope 10, and is provided to correspond to and communicate with the anti-rotation groove 621. The anti-rotation screw 110 can be threaded into the outer hole opening of the second screw hole 12 until the screw of the anti-rotation screw 110 extends from the inner hole opening of the second screw hole 12 and is positioned and restricted by the anti-rotation groove 621. Based on this, the positionally restricted fit of the anti-rotation screw 110 and the anti-rotation groove 621 can reliably restrict rotation of the outer tube 60 in the circumferential direction about its own central axis.

[0092] Here, the adjustment mechanism 80 reduces the range of rotation of the outer tube 60 around the spherical center of the ball joint 11, thereby ensuring the anti-rotation effect of the anti-rotation screw 110 and reducing the risk of interference between the anti-rotation screw 110 and the anti-rotation groove 621 while the spherical center of the outer tube 60 rotates with the ball joint 11.

[0093] 5 and 6, in some embodiments of the present application, the thread of the locking screw 110 abuts against two opposing groove walls of the locking groove 621.

[0094] The screw dimensions of the anti-rotation screw 110 are adjusted so that the screw of the anti-rotation screw 110 abuts against two opposing groove walls of the anti-rotation groove 621. Depending on the shape of the screw of the anti-rotation screw 110, the contact between the screw of the anti-rotation screw 110 and the groove wall of the anti-rotation groove 621 may be point contact or line contact, and this embodiment is not limited to these.

[0095] By adopting the above solution, the screw of the anti-rotation screw 110 abuts against the two opposing groove walls of the anti-rotation groove 621, thereby eliminating any fitting gap between the screw of the anti-rotation screw 110 and the two opposing groove walls of the anti-rotation groove 621. Based on this, the anti-rotation screw 110 can reliably restrict the outer tube 60 from rotating in the circumferential direction about its own central axis, effectively reducing the risk that the outer tube 60 will have the freedom to rotate in the circumferential direction about its own central axis due to the presence of a fitting gap.

[0096] 5 and 6, in some embodiments of the present application, the outer tube 60 has a radial plane 63 that passes through the spherical center of the ball joint 11 and is perpendicular to the central axis of the scope 10, and the contact point or contact line between the screw of the anti-rotation screw 110 and the groove wall of the anti-rotation groove 621 is located on the radial plane 63.

[0097] The radial plane 63 passes through the spherical center of the ball joint 11 and is perpendicular to the central axis of the scope 10, and the position and state of the radial plane 63 relative to the scope 10 remains almost unchanged even while the outer tube 60 rotates around the spherical center of the ball joint 11 using the adjustment mechanism 80.

[0098] Based on this, by maintaining the contact point or contact line between the screw of the anti-rotation screw 110 and the groove wall of the anti-rotation groove 621 on the radial plane 63, the anti-rotation effect of the anti-rotation screw 110 is ensured while the risk of interference between the anti-rotation screw 110 and the anti-rotation groove 621 while the spherical center of the outer tube 60 rotates within the ball joint 11 can be reduced.

[0099] 5, 6, and 7, in some embodiments of the present application, the driver 50 has a drive tube 51 fitted into the inner tube 20, a protrusion 511 is provided on the outer tube surface of the drive tube 51, a position restriction groove 23 is provided on the wall of the inner tube 20 and extends along the axial direction of the inner tube 20, the end of the position restriction groove 23 closer to the eye side is connected to the outside of the inner tube 20, the protrusion 511 is restricted in position by the position restriction groove 23, and the protrusion 511 abuts against two opposing groove walls of the position restriction groove 23, the outer tube 60 has a radial plane 63 that passes through the spherical center of the ball joint 11 and is perpendicular to the central axis of the scope 10, and the contact point or line between the protrusion 511 and the groove wall of the position restriction groove 23 is located on the radial plane 63.

[0100] A drive tube 51 is provided at the end of the driver 50 that is connected to the inner tube 20, and the drive tube 51 can be fitted inside the end of the inner tube 20 that is closest to the eye side. A protrusion 511 is provided on the outer cylindrical surface of the driver tube 51, and a position restricting groove 23 is provided correspondingly on the wall of the inner tube 20. When the driver tube 51 is fitted into the inner tube 20, the protrusion 511 can slide into the position restricting groove 23 from the end that is closest to the eye side of the position restricting groove 23, and is finally restricted in position by the position restricting groove 23. Based on this, a detachable connection between the driver 50 and the inner tube 20 can be easily, quickly, and reliably established, and after connection, the driver 50 and the inner tube 20 can maintain synchronous circumferential rotation. As a result, when the user rotates the eyepiece lens group 40 in a circumferential direction, thereby pulling and rotating the driver 50 in the circumferential direction, the driver 50 reliably pulls and rotates the inner tube 20 in the circumferential direction through the position restriction between the protrusion 511 and the position restriction groove 23, and further pulls and moves the variable magnification lens group 30 along the axial direction of the inner tube 20, thereby achieving the variable magnification operation.

[0101] Here, one or more position restricting grooves 23 may be provided along the circumferential direction of the wall of the inner tube 20, and each position restricting groove 23 can restrict the position of one corresponding protrusion 511, but this embodiment is not limited thereto. Preferably, when a plurality of position restricting grooves 23 are provided, the plurality of position restricting grooves 23 are arranged in an array along the circumferential direction of the wall of the inner tube 20. Such an arrangement helps to balance and optimize the distribution of the connection points between the drive tube 51 and the inner tube 20, thereby achieving a balance in the distribution of the acting forces between the drive tube 51 and the inner tube 20 and improving the reliability and strength of the connection between the drive tube 51 and the inner tube 20.

[0102] Here, the shape of the protrusion 511 is not limited to a cylindrical body, a polygonal cylinder, or a hemisphere, and this embodiment does not limit these.

[0103] Furthermore, the protrusion 511 abuts against two opposing groove walls of the position restricting groove 23. This eliminates any fitting gap between the protrusion 511 and the two opposing groove walls of the position restricting groove 23. As a result, the driver 50 does not need to compensate for any fitting gap between the protrusion 511 and the two opposing groove walls of the position restricting groove 23 when rotating in the circumferential direction, and can directly pull and rotate the inner tube 20 in the circumferential direction synchronously through the position restriction between the protrusion 511 and the position restricting groove 23. This ensures and improves the rotational synchronization between the driver 50 and the inner tube 20, which helps to ensure and improve the accuracy of the magnification adjustment.

[0104] Here, the contact between the protrusion 511 and the groove wall of the position control groove 23 may be point contact or line contact. For example, if the protrusion 511 is a cylinder, the outer surface of the protrusion 511 can be in line contact with the groove wall of the position control groove 23, and if the protrusion 511 is a rectangular parallelepiped, the edge of the protrusion 511 can be in line contact with the groove wall of the position control groove 23.

[0105] The radial plane 63 passes through the spherical center of the ball joint 11 and is perpendicular to the central axis of the scope 10, and the position and state of the radial plane 63 relative to the scope 10 remains almost unchanged even while the outer tube 60 rotates around the spherical center of the ball joint 11 using the adjustment mechanism 80.

[0106] Based on this, by maintaining the contact point or contact line between the protrusion 511 and the groove wall of the position control groove 23 on the radial plane 63, the effect of the protrusion 511 rotating the inner tube 20 and the driver 50 in synchronization is ensured, while the risk of interference between parts, particularly the driver 50 and the inner tube 20, can be reduced while the spherical center of the outer tube 60 rotates within the ball joint 11. [Example]

[0107] The differences between this embodiment and the second embodiment are as follows.

[0108] Referring to FIG. 9, in some embodiments of the present application, the end of the inner tube 20 closest to the eye does not protrude from the outer tube 60, and the ball head 62 is a complete ball head 62 structure that is hingedly connected solely to the ball joint 11.

[0109] Furthermore, the end of the inner tube 20 closest to the eye side does not protrude from the outer tube 60, i.e., it is located within the outer tube 60. The ball head 62 of the outer tube 60 has a complete ball head 62 structure and is independently hingedly connected to the ball joint 11, limiting the ball head 62's separation from the ball joint 11. Based on this, when force is applied to the end of the outer tube 60 far from the eye side, the outer tube 60 can rotate gently and reliably within a certain range around the spherical center of the ball joint 11. This installation also facilitates the achievement of the purpose of adjustment and gun correction.

[0110] Referring to Figure 9, in some embodiments of the present application, the variable magnification sight further includes a retaining ring 90 provided within the scope 10 and connected to the scope 10, and a second retaining ring 100 provided within the outer tube 60 and connected to the outer tube 60, the retaining ring 90 being pressed against the ball head 62 and restricting the ball head 62 from disengaging from the ball joint 11, and the second retaining ring 100 being fastened to the end of the inner tube 20 closer to the eye side.

[0111] Based on the previous embodiment, the retaining ring 90 connected to the scope 10 can hold and restrict the position of the ball head 62, which is independently hingedly connected to the ball joint 11, thereby reliably restricting the ball head 62 from coming off the ball joint 11. At the same time, the retaining ring 90 presses and restricts the position of the ball head 62 on the ball joint 11, thereby effectively stabilizing the position of the outer tube 60 relative to the axial direction of the scope 10 and thereby effectively restricting movement of the outer tube 60 along the axial direction of the scope 10. Furthermore, the position restriction of the retaining ring 90 relative to the ball head 62 does not affect the rotation of the ball head 62 at the ball joint 11. Here, this embodiment does not limit the connection method between the retaining ring 90 and the scope 10.

[0112] Based on the previous embodiment, the second retaining ring 100 connected to the outer tube 60 can position and lock the end of the inner tube 20 closer to the eye, reliably restricting movement of the inner tube 20 in the direction closer to the eye. This engages with a positioning structure (e.g., a locking portion 64) at the end of the inner tube 20 farther from the eye, reliably stabilizing the position of the inner tube 20 relative to the axial direction of the outer tube 60 and thereby reliably restricting movement of the inner tube 20 along the axial direction of the outer tube 60. Furthermore, the fact that the first retaining ring 70 positions and locks the end of the inner tube 20 closer to the eye does not affect the rotation of the inner tube 20 in the circumferential direction around its central axis. This embodiment does not limit the connection method between the second retaining ring 100 and the scope 10; for example, a screw connection may be used.

[0113] Of course, in other optional embodiments, other methods can be used to restrict the position of the ball head 62 and limit its separation from the ball joint 11, provided that they do not affect the rotation of the ball head 62 at the ball joint 11. Other methods can be used to restrict the position of the end of the inner tube 20 closer to the eye side and position it, provided that they do not affect the rotation of the inner tube 20 in the circumferential direction about its own central axis. This embodiment is not limited to these.

[0114] The above description is merely a preferred embodiment of the present application, and does not limit the present application. Any modifications, equivalent replacements, or improvements made without departing from the spirit and principles of the present application should be included within the protection scope of the present application. [Explanation of symbols]

[0115] 10 Scope 11 Ball joint 12 Second screw hole 20 inner tube 21 Curved groove 22 flange 23 Position control groove 30 variable magnification lens group 31 Slider 32 Lens holder 33 Lens 40 Eyepiece group 41 Cylinder 411 First screw hole 50 Driver 51 Drive tube 511 Protrusion 60 outer tube 61 Straight groove 62 Ball Head 621 Anti-rotation groove 63 Radial plane 64 Stopper 70 First retaining ring 80 Adjustment mechanism 81 Trajectory Control Module 82 Wind Deflection Control Module 83 Reset Structure 90 Retaining ring 100 Second retaining ring 110 Stop screw 120 Lock retaining ring 130 Synchronous screw 140 Third retaining ring

Claims

1. A variable magnification sight, Scope and an inner tube that is attached within the scope, can rotate in a circumferential direction around its central axis, and whose position relative to the axial direction of the scope is stable; a variable magnification lens group attached within the inner tube and connected to the inner tube in an interlocking manner, and the rotation of the inner tube in a circumferential direction pulls the variable magnification lens group to move it along an axial direction of the inner tube; an eyepiece lens group provided at an end of the scope close to the eye; A variable magnification sight comprising: a driver connected between the inner tube and the eyepiece lens group, the driver maintaining synchronous circumferential rotation of the driver, the eyepiece lens group, and the inner tube.

2. further comprising an outer tube; The outer tube is attached inside the scope and outside the inner tube, the position of the outer tube in the axial direction of the scope is stabilized, and the outer tube is restricted from rotating in a circumferential direction around its own central axis, a curved groove extending spirally through the wall of one of the outer tube and the inner tube, and a linear groove extending along the axial direction of the other of the two tubes and penetrating the wall; 2. A variable magnification sight according to claim 1, wherein said variable magnification lens group is provided with a slider that is in sliding contact with said curved groove and said straight groove.

3. the outer tube is fixedly connected to the scope; The variable magnification sight according to claim 2, further comprising a first retaining ring provided within the scope and connected to the scope, the first retaining ring being secured to an end of the inner tube closer to the eye.

4. a ball head is provided in a protruding manner on the outer periphery of the end of the outer tube close to the eye side, a ball joint is provided in a recessed manner on the inner wall of the scope, and the ball head is connected to the ball joint by a hinge; The variable magnification sight described in claim 2, characterized in that the variable magnification sight further includes an adjustment mechanism provided at the end of the outer tube away from the eye side, the adjustment mechanism being used to pull the outer tube and rotate it around the spherical center of the ball joint.

5. a flange is provided on the outer periphery of the end of the inner tube near the eye side, and the flange and the ball head are joined to form a complete ball head structure, which is jointly hingedly connected to the ball joint; 5. The variable magnification sight according to claim 4, further comprising a retaining ring provided within the scope and connected to the scope, the retaining ring being pressed against the flange to restrict separation of the flange and the ball head from the ball joint.

6. an end of the inner tube near the eye side does not protrude from the outer tube, and the ball head is a complete ball head structure and is hingedly connected to the ball joint alone; The variable magnification sight according to claim 4, further comprising a retaining ring provided within the scope and connected to the scope, and a second retaining ring provided within the outer tube and connected to the outer tube, the retaining ring being pressed against the ball head to restrict removal of the ball head from the ball joint, and the second retaining ring being secured to the end of the inner tube closer to the eye side.

7. A variable magnification sight as described in claim 4, characterized in that an anti-rotation groove is formed on the outer peripheral surface of the ball head and extends along the axial direction of the outer tube, a second threaded hole is formed in the scope and extends along its radial direction and communicates with the anti-rotation groove, the variable magnification sight further includes an anti-rotation screw attached to the second threaded hole, and the screw of the anti-rotation screw extends from the second threaded hole and is positioned in the anti-rotation groove, thereby restricting circumferential rotation of the outer tube about its own central axis.

8. The screw of the anti-rotation screw abuts against two opposing groove walls of the anti-rotation groove, 8. A variable magnification sight according to claim 7, wherein the outer tube has a radial plane that passes through the spherical center of the ball joint and is perpendicular to the central axis of the scope, and the contact point or line between the screw of the anti-rotation screw and the groove wall of the anti-rotation groove is located on the radial plane.

9. A variable magnification sight as described in any one of claims 2 to 8, characterized in that a stop portion is provided at the end of the outer tube away from the eye side, and the stop portion is fastened to the end of the inner tube away from the eye side.

10. the driver has a drive tube fitted into the inner tube, a protrusion is provided on an outer tube surface of the drive tube, a position restriction groove is provided on an inner tube wall of the inner tube and extends along the axial direction of the inner tube, an end of the position restriction groove close to the eye side communicates with the outside of the inner tube, and the position of the protrusion is restricted by the position restriction groove, 9. The variable magnification sight according to claim 1, wherein the protrusion abuts against two opposing groove walls of the position restricting groove.

11. the driver has a drive tube fitted into the inner tube, a protrusion is provided on an outer tube surface of the drive tube, a position restriction groove is provided on an inner tube wall of the inner tube and extends along the axial direction of the inner tube, an end of the position restriction groove close to the eye side communicates with the outside of the inner tube, the position of the protrusion is restricted by the position restriction groove, and the protrusion abuts against two opposing groove walls of the position restriction groove; A variable magnification sight according to any one of claims 5 to 8, characterized in that the outer tube has a radial plane that passes through the spherical center of the ball joint and is perpendicular to the central axis of the scope, and the contact point or line between the protrusion and the groove wall of the position restriction groove is located on the radial plane.

12. The variable magnification sight according to any one of claims 1 to 8, further comprising a locking ring connected to the end of the scope closer to the eye side, the locking ring pressing the driver against the end of the scope closer to the eye side and stabilizing the position of the driver relative to the axial direction of the scope.

13. A variable magnification sight as described in any one of claims 1 to 8, characterized in that the eyepiece group includes a cylindrical body connected to the driver, the cylindrical body is fitted onto the outside of the driver, and a first screw hole is provided on the outer cylindrical surface of the cylindrical body that penetrates along its radial direction, and the variable magnification sight further includes a synchronous screw attached to the first screw hole, the synchronous screw abutting against the driver, thereby maintaining synchronous circumferential rotation of the cylindrical body and the driver.

Images