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 generally includes a scope, an inner tube that is mounted in the scope and can rotate around its own central axis, and a variable magnification lens group that is mounted in the inner tube, the scope has a variable magnification groove formed extending along its circumferential direction, the inner tube has a variable magnification pin that slides in the variable magnification groove, the variable magnification lens group is connected in conjunction with the inner tube, and the rotation of the inner tube can pull the variable magnification lens group to move along the axial direction of the inner tube. Based on this, the variable magnification pin is pulled and slid along the variable magnification groove to pull and rotate the inner tube, and further the variable magnification lens group is pulled and moved 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, so that when the scope receives an impact, the variable magnification groove and its vicinity are easily deformed, and the risk of breakage is likely to occur, and the useful life of the variable magnification sight is short. 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 vicinity susceptible to deformation and even the risk of 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 in the present application is as follows: Scope and an inner tube that is attached within the scope and can rotate in a circumferential direction about its own central axis and whose position relative to the axial direction of the scope is stable; a variable magnification lens group that is 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; The actuator includes 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 outer tube being axially stabilised and the outer tube being restricted from rotating in a circumferential direction about its central axis; A curved groove is formed in a wall of one of the outer tube and the inner tube, extending in a spiral manner and penetrating the wall, and a straight groove is formed in a wall of the other of the two, extending along its axial direction and penetrating the wall, The variable power lens group is provided with sliders that are in sliding contact with the curved grooves and the straight 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 disposed within 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 on the outer periphery of the end of the outer tube close to the eye side, a ball joint is provided 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 an end of the outer tube away from the eye side, the adjustment mechanism being used to pull the outer tube to rotate it around the ball 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, and together are 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 retained 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 hinged solely to the ball joint.

[0012] In some embodiments, the variable magnification sight further includes a retaining ring disposed within the scope and connected to the scope, and a second retaining ring disposed within the outer tube and connected to the outer tube, the retaining ring being held by the ball head and limiting 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, and a second screw hole is formed on the scope and extends along its radial direction and communicates with the anti-rotation groove, and the variable magnification sight further includes an anti-rotation screw attached to the second screw hole, and a 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 about its central axis.

[0014] In some embodiments, the screw of the anti-rotation screw abuts two opposing groove walls of the anti-rotation 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 line between the screw of the anti-rotation screw and the groove wall of the anti-rotation groove is located on the radial plane.

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

[0017] In some embodiments, the driver has a drive tube that is fitted into the inner tube, a protrusion is provided on the outer tube surface of the drive tube, and a position control groove is provided on the inner tube wall of the inner tube extending along the 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 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 drive tube, an end of the position restriction groove close to the eye side is connected to the outside of the inner tube, the protrusion is positionally 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 and the groove wall of the position regulating groove is located on the radial plane.

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

[0021] In some embodiments, the eyepiece group includes a cylinder connected to the driver, the cylinder being fitted onto the outside of the driver, the outer cylindrical surface of the cylinder being provided with a first screw hole passing through it in the 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 cylinder and the driver. Effect of the Invention

[0022] The beneficial effects of the variable magnification sight according to the present application 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 through the driver, so that the eyepiece group, the driver and the inner tube maintain synchronous circumferential rotation. On this basis, when it is necessary to adjust the magnification of the variable magnification sight, the user can hold the eyepiece group located in the external environment and close to the user, and rotate the eyepiece group in the circumferential direction to pull the driver and the inner tube to rotate synchronously in the circumferential direction, so that the variable magnification lens group is moved along the axial direction of the inner tube by the circumferential rotation of the inner tube, and the magnification of the variable magnification sight is further adjusted. 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 and 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 creative labor. [Brief description of the drawings]

[0025] [Figure 1] 1 is a schematic diagram showing the structure of a variable magnification sight according to a first embodiment of the present application. [Diagram 2] FIG. 2 is an enlarged view of region A in FIG. [Diagram 3] FIG. 2 is an enlarged view of region B in FIG. [Figure 4] 2 is an exploded schematic view of a driver and an inner tube according to the first embodiment of the present invention. FIG. [Diagram 5] FIG. 11 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. [Figure 7] 13 is a schematic diagram showing a case where a protrusion and a position restricting groove according to a second embodiment of the present invention are fitted together. FIG. [Figure 8] 11 is a schematic diagram of an adjustment mechanism according to a second embodiment of the present invention, in which a scope, an inner tube, and an outer tube are fitted together. FIG. [Figure 9] FIG. 11 is a structural schematic diagram of a variable magnification sight according to a third embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] In order to clarify the technical problems, technical solutions and 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 do not 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," "inside," "outside," etc. 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, and are not intended to 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] Moreover, 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 and limited, the terms "attached", "coupled", "connected", "fixed" and the like should be understood in a broad sense, for example, may be fixedly connected, detachably connected, or integral, may be mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, communicated inside two elements, or an interactive relationship between two elements. A person skilled in the art can understand the specific meaning of the above terms in this application based on the specific situation.

[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 away from the shooter.

[0031] In the prior art, a variable magnification sight generally includes a scope, an inner tube that is mounted in the scope and can rotate around its central axis, and a variable magnification lens group that is mounted in the inner tube, the scope has a variable magnification groove formed extending along its circumferential direction, the inner tube has a variable magnification pin that slides in the variable magnification groove, the variable magnification lens group is connected in conjunction with the inner tube, and the rotation of the inner tube can pull the variable magnification lens group to move along the axial direction of the inner tube. Based on this, the variable magnification pin is pulled and slid along the variable magnification groove to pull and rotate the inner tube, and further the variable magnification lens group is pulled and moved 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, so that when the scope is subjected to an impact, the variable magnification groove and its vicinity are easily deformed, and the risk of breakage is likely to occur, and the useful life of the variable magnification sight is short. In particular, there is a positive correlation between the extension width of the magnification variable groove and the magnification adjustment range of the magnification sight, and as the extension width of the magnification variable groove increases, the local strength of the magnification variable groove and its vicinity in the scope becomes weaker and weaker, resulting in a greater risk of deformation and even breakage of the magnification variable groove and its vicinity 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 the variable magnification pin and variable magnification groove in the scope, thereby effectively ensuring and improving the structural strength of the scope, effectively reducing the risk of the scope being easily deformed and 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. EXAMPLES

[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 attached in the scope 10 and can rotate in a circumferential direction about its own central axis, and the position of the inner tube 20 relative to the axial direction of the scope 10 is stable. The variable magnification lens group 30 is attached in the inner tube 20 and is connected in conjunction with the inner tube 20, and the circumferential rotation of the inner tube 20 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 an end of the scope 10 close to the eye side. The driver 50 is connected between the inner tube 20 and the eyepiece group 40, and the driver 50, the eyepiece group 40, and the inner tube 20 maintain synchronous circumferential rotation.

[0035] The inner tube 20 is attached inside the scope 10, and the scope 10 can reliably protect the structures such as the inner tube 20 provided therein. The position of the inner tube 20 in the axial direction of the scope 10 is stable, that is, the 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 in the inner tube 20 to produce a variable magnification effect. The variable magnification lens group 30 is interlockingly connected to the inner tube 20, and thus the variable magnification lens group 30 can move along the axial direction of the inner tube 20 by the traction of the circumferential rotation of the inner tube 20. By adjusting the position of the variable magnification lens group 30 relative to the axial direction of the inner tube 20, adjustment of the magnification of the variable magnification sight can be realized. Here, the variable magnification lens group 30 includes a lens holder 32 movably mounted in the inner tube 20 and at least one lens 33 mounted in 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 provided 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 close to the eye side, and is not limited to being fixedly connected or detachably connected, and may be connected, for example, by 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 it is preferable to use a detachable connection between the driver 50 and the eyepiece group 40, such as fastening with a screw, and of course, a fixed connection may also be used, and this embodiment is not limited to these.

[0039] On this basis, based on the sequential connection relationship between the eyepiece group 40, the driver 50, and the inner tube 20, the eyepiece group 40, the driver 50, and the inner tube 20 can maintain synchronous circumferential rotation. Thus, when the magnification of the variable magnification sight needs to be adjusted, the user can hold the eyepiece group 40 located in the external environment and close to the user, and rotate the eyepiece group 40 in the circumferential direction to pull the driver 50 and the inner tube 20 to rotate synchronously in the circumferential direction, so that 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 realizing 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 the 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 and even broken when subjected to impact due to weakening of local 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 enter the human eye along the optical path through the variable magnification lens group 30, the driver 50, and the eyepiece group 40, in that order, thereby effectively ensuring the aiming performance of the variable magnification sight, and not affecting the aiming performance of the variable magnification sight even during magnification operations.

[0041] In this embodiment, without adding an adjustment ring, the eyepiece group 40 is directly utilized to form the grip structure used by the user 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 sum up, 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, the driver 50, and the inner tube 20 maintain synchronous circumferential rotation. On this basis, when it is necessary to adjust the magnification of the variable magnification sight, the user can hold the eyepiece group 40 located in an external environment and close to the user, and rotate the eyepiece group 40 in the circumferential direction, thereby pulling the driver 50 and the inner tube 20 to rotate synchronously in the circumferential direction, whereby 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 realizing 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 the 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 and even broken when subjected to impact due to weakening of local 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, the position of the outer tube 60 in the axial direction of the scope 10 is stabilized, and the outer tube 60 is restricted from rotating in a circumferential direction around its own central axis, a curved groove 21 is formed in the tube wall of one of the outer tube 60 and the inner tube 20, which extends in a spiral manner and penetrates the tube wall, and a straight groove 61 is formed in the tube wall of the other of the two, which extends along the axial direction and penetrates the tube wall, and a slider 31 is provided in the variable magnification lens group 30, which is in sliding contact with the curved groove 21 and the straight 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 on a lens holder 32 of the variable magnification lens group 30, and the slider 31 is, 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, that is, 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 groove 21 and the straight groove 61 provided respectively on the outer tube 60 and the inner tube 20, and the slider 31 which is in sliding contact with both the curved groove 21 and the straight groove 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 a user rotates the eyepiece group 40 in the circumferential direction to pull the driver 50 and the inner tube 20 to rotate 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 relatively, and as a result, the intersection position of the curved groove 21 and the straight groove 61 changes, so that the slider 31 that is in sliding contact with both the curved groove 21 and the straight groove 61 moves along the axial direction of the inner tube 20, and further the variable magnification lens group 30 is pulled and moved along the axial direction of the inner tube 20, thereby achieving the variable magnification operation. The variable magnification 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] In addition, the outer tube 60 and the scope 10 are connected firmly and fixedly by using a screw connection or adhesive bonding, but are not limited thereto. As shown in Figs. 1, 2, and 3, in an optional embodiment, the variable magnification sight further includes a first stop ring 70 and a third stop ring 140 that are all provided in the scope 10 and all connected to the scope 10, the first stop ring 70 is positioned and connected to the end of the outer tube 60 close to the eye side, and the third stop ring 140 is positioned and connected to the end of the outer tube 60 away from the eye side. This embodiment does not limit the connection form between the first stop ring 70 and the scope 10 and the outer tube 60, and the connection form between the third stop 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 provided in the scope 10 and connected to the scope 10, and the first retaining ring 70 is secured to an end of the inner tube 20 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-mentioned solution, the first stop 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 the movement of the inner tube 20 in a direction closer to the eye side, which is thereby fitted into a position restriction structure (e.g., the stopper 64 described below) at the end of the inner tube 20 away from the eye side, reliably stabilizing the position of the inner tube 20 in the axial direction of the outer tube 60, thereby reliably restricting the movement of the inner tube 20 along the axial direction of the outer tube 60. Furthermore, the fact that the first stop ring 70 positions and stops the end of the inner tube 20 close to the eye side does not affect the rotation of the inner tube 20 in the circumferential direction around its own central axis.

[0054] Naturally, in other optional embodiments, other position control structures may be adopted to control and position the end of the inner tube 20 closer to the eye side, provided that the rotation of the inner tube 20 in the circumferential direction about 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 stopper 64 is provided at the end of the outer tube 60 away from the eye side, and the stopper 64 is fastened to the end of the inner tube 20 away from the eye side. Here, the stopper 64 is formed by protruding inward from the wall of the inner tube 20 of the outer tube 60.

[0056] By adopting the above-mentioned solution, the stopper 64 may be formed by projecting the end of the outer tube 60 away from the eye side inward, and the stopper 64 positions and stops the end of the inner tube 20 away from the eye side, reliably restricting the 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 the movement of the inner tube 20 along the axial direction of the outer tube 60. Furthermore, the stopper 64 positioning and stopping the end of the inner tube 20 away from the eye side does not affect the rotation of the inner tube 20 in the circumferential direction around its own central axis.

[0057] Naturally, in other optional embodiments, other position restriction structures may be adopted to restrict the position of the end of the inner tube 20 away from the eye side and to position the end, provided that the rotation of the inner tube 20 in the circumferential direction about its own central axis is not affected. For example, referring 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, to restrict the position of the end of the inner tube 20 away from the eye side and to position the end. This embodiment is not limited to these.

[0058] In contrast to other embodiments, in this embodiment, a stopper portion 64 for positioning and stopping the end of the inner tube 20 away from the eye side is directly formed by protruding onto the end of the outer tube 60 away from the eye side, which effectively reduces the number of structural members and effectively saves assembly steps, thereby ensuring and improving the convenience and efficiency of assembling the variable magnification telescope.

[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 control groove 23 is provided on the wall of the inner tube 20 and extends along the axial direction thereof, an end of the position control groove 23 closer to the eye side is connected to the outside of the inner tube 20, and the protrusion 511 is positionally controlled by the position control groove 23.

[0060] Alternatively, the drive cylinder 51 may be provided at the end of the driver 50 connected to the inner tube 20, and the drive cylinder 51 may be fitted inside the end of the inner tube 20 close to the eye side. A protrusion 511 is provided on the outer cylinder surface of the drive cylinder 51, and a position restriction groove 23 is provided correspondingly on the wall of the inner tube 20 of the inner tube 20. While the drive cylinder 51 is fitted into the inner tube 20, the protrusion 511 can slide into the position restriction groove 23 from the end close to the eye side of the position restriction groove 23, and is finally restricted in position by the position restriction groove 23. In this way, the driver 50 and the inner tube 20 are detachably connected, and after the 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 inner tube 20 wall of the inner tube 20, and each position restricting groove 23 can restrict the position of one or more protrusions 511 correspondingly, and 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 inner tube 20 wall of the inner tube 20, and such an arrangement is helpful 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 force between the drive tube 51 and the inner tube 20, and realizing an improvement in 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 cylinder, a polygonal cylinder, or a hemisphere, and this embodiment is not limited thereto.

[0063] By adopting the above-mentioned solution, the driver 50 is fitted and engaged with the end of the inner tube 20 close to the eye side via the drive tube 51, and is fitted and positioned in the position restricting groove 23 on the wall of the inner tube 20 via the protrusion 511 on the outer cylinder surface of the drive tube 51, thereby easily, quickly and reliably establishing a detachable connection between the driver 50 and the inner tube 20, and the driver 50 and the inner tube 20 maintain synchronous circumferential rotation. On this basis, 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 walls 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-mentioned solution, the protrusion 511 abuts against the two opposing groove walls of the position restricting groove 23, thereby eliminating the fitting gap between the protrusion 511 and the two opposing groove walls of the position restricting 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 restricting groove 23, and can directly pull the inner tube 20 through the position restriction between the protrusion 511 and the position restricting groove 23 to rotate synchronously in the circumferential direction, thereby ensuring and improving the rotational synchronism between the driver 50 and the inner tube 20, which is advantageous to ensuring and improving the precision of the variable magnification adjustment.

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

[0069] In addition, the locking ring 120 may be connected to the end of the scope 10 close 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 retaining ring 120 presses the driver 50 and holds it against the end of the scope 10 closer to the eye side, stabilizing the position of the driver 50 in the axial direction of the scope 10, thereby reliably restricting the driver 50 from moving along the axial direction of the scope 10. Furthermore, the pressing and position restriction of the lock retaining 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 synchronous rotation of the driver 50 and the inner tube 20 is not affected. This embodiment is not limited to these.

[0072] 1 and 2, in some embodiments of the present application, the eyepiece lens group 40 includes a barrel 41 connected to a driver 50, the barrel 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 barrel 41, penetrating along its radial direction, and the variable magnification sight further includes a synchronous screw 130 attached to the first screw hole 411, the synchronous screw 130 abutting against the driver 50, and thus the barrel 41 and the driver 50 maintain synchronous circumferential rotation.

[0073] The eyepiece group 40 includes a cylinder 41, and the cylinder 41 can be fitted to the outer circumferential side 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 cylinder surface of the cylinder 41, penetrating to the inner cylinder surface of the cylinder 41 along the radial direction of the cylinder 41. The synchronous screw 130 can be screwed in from 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 circumferential surface of the driver 50. Based on this, the cylinder 41 and the driver 50 can maintain synchronous circumferential rotation based on the connection between the synchronous screw 130, the driver 50, and the cylinder 41.

[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 of the first screw holes 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 realizing a balance in the distribution of the acting forces between the driver 50 and the cylindrical body 41, and improving the connection reliability and connection strength between the driver 50 and the eyepiece group 40.

[0075] By adopting the above-mentioned solution, the eyepiece group 40 may be fitted and engaged with the driver 50 via the cylinder 41, and may be abutted 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. On this basis, when a 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 cylinder 41, the synchronous screw 130 and the driver 50, and further pulls the inner tube 20 to rotate it 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. EXAMPLES

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

[0078] 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 away 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 removal from the ball joint 11 is restricted. Based on this, when the end of the outer tube 60 away from the eye side is subjected to force, the outer tube 60 can gently and reliably rotate a certain amount around the spherical center of the ball joint 11.

[0080] The adjustment mechanism 80 is drilled and attached to the scope 10, is provided at the end of the outer tube 60 remote from the eye side, and may 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 to controllably rotate it about the spherical center of the ball joint 11. On this basis, simple and controllable adjustment can be performed and the optical axis can be accurately aligned, achieving the purpose of adjustment and gun correction, thereby effectively eliminating assembly errors and effectively 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 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. 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. On this basis, when the trajectory adjustment module 81 applies a vertical force to the end of the outer tube 60 away from the eye side in the vertical direction, the outer tube 60 can swing vertically around the ball 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 precise adjustment of the vertical position of the aiming point and the optical axis. When the wind deflection adjustment module 82 applies a horizontal acting force along the horizontal direction to the end of the outer tube 60 away from the eye side, the outer tube 60 can horizontally swing around the ball center of the ball joint 11 according to the horizontal acting force applied by the wind deflection adjustment module 82, thereby realizing the precise adjustment of the wind deflection compensation distance, and the precise adjustment of the horizontal position of the aiming point and the optical axis. Meanwhile, the reset structure 83 can apply a balancing acting force to the end of the outer tube 60 away from the eye side, and the direction of the balancing acting force is opposite to the direction of the resultant force of the vertical acting force and the horizontal acting force, so as to gently stabilize the outer tube 60 in the state after adjustment. 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 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 acting force along the horizontal direction to the end of the outer tube 60 away from the eye side, the outer tube 60 can horizontally swing around the ball center of the ball joint 11 according to the horizontal acting force applied by the wind deflection adjustment module 82, and 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 acting force, so as to gently stabilize the outer tube 60 in the state after adjustment, thus realizing the precise adjustment of the wind deflection compensation distance, and the precise adjustment of the horizontal position 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 protrudingly formed on the outer periphery of the end of the inner tube 20 close 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] In addition, 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, and the flange 22 and the ball head 62 can be joined to form a complete ball head 62 structure, which is jointly hinged 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 to a certain extent around the ball center of the ball joint 11 when the end of the outer tube 60 away from the eye side is subjected to force. Installed in this way, it is also easy to achieve the purpose of adjustment and gun correction.

[0086] 5 and 6, in some embodiments of the present application, the variable magnification sight further includes a presser ring 90 provided in the scope 10 and connected to the scope 10, and the presser 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 presser ring 90 and the scope 10.

[0087] Based on the previous embodiment, the flange 22 can be held down and positioned by the pressing ring 90 connected to the scope 10, and the flange 22 abuts against the ball head 62 to restrict its position, thereby reliably restricting the flange 22 and the ball head 62 from coming off the ball joint 11. At the same time, the pressing ring 90 presses the flange 22 and the ball head 62 to the ball joint 11 to restrict their positions, so that 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 can be effectively stabilized, and the inner tube 20 can be effectively restricted from moving along the axial direction of the scope 10 and the outer tube 60 can be effectively restricted from moving along the axial direction of the scope 10. The position restriction of the pressing ring 90 relative to the flange 22 and the ball head 62 does not affect the rotation of the flange 22 and the ball head 62 at the ball joint 11, and does not affect the rotation of the inner tube 20 in the circumferential direction around its own central axis.

[0088] Of course, in other optional embodiments, other methods are used to restrict the positions of the flange 22 and the ball head 62 and to restrict the flange 22 and the ball head 62 from coming off the ball joint 11, on the premise that the rotation of the flange 22 and the ball head 62 at 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 and extends along the axial direction of the outer tube 60, a second screw hole 12 is formed in the scope 10 and extends along its radial direction and communicates with the anti-rotation groove 621, and the variable magnification sight further includes an anti-rotation screw 110 attached to the second screw hole 12, and 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 the circumferential direction around its own central axis.

[0091] In addition, a rotation prevention groove 621 is provided on the outer peripheral surface of the ball head 62, and the rotation prevention 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 along the radial direction of the scope 10 and penetrates the scope 10, and the second screw hole 12 is provided corresponding to and communicates with the rotation prevention groove 621. The rotation prevention screw 110 can be screwed in from the outer hole opening of the second screw hole 12 until the screw of the rotation prevention screw 110 extends from the inner hole opening of the second screw hole 12 and is positioned and restricted by the rotation prevention groove 621. Based on this, the rotation prevention screw 110 and the rotation prevention groove 621 are fitted together while being positioned, and therefore the outer tube 60 can be reliably restricted from rotating in the circumferential direction around 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 while 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 threads of the anti-rotation screw 110 abut against two opposing groove walls of the anti-rotation 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 form of the screw of the anti-rotation screw 110, the contact between the screw of the anti-rotation screw 110 and the groove walls of the anti-rotation groove 621 may be point contact or line contact, and this embodiment is not limited to these.

[0095] By employing the above-mentioned solution, the screw of the anti-rotation screw 110 is brought into contact with 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, and can effectively reduce 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] Furthermore, 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 hardly changes even while the outer tube 60 rotates around the spherical center of the ball joint 11 by 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 can be ensured while reducing the risk of interference between the anti-rotation screw 110 and the anti-rotation groove 621 while the ball center of the outer tube 60 rotates within the ball joint 11.

[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 control groove 23 extending along the axial direction is provided on the wall of the inner tube 20, the end of the position control groove 23 closer to the eye side is connected to the outside of the inner tube 20, the protrusion 511 is positionally controlled by the position control groove 23, the protrusion 511 abuts against two opposing groove walls of the position control 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 control groove 23 is located on the radial plane 63.

[0100] In addition, a drive cylinder 51 is provided at the end of the driver 50 connected to the inner tube 20, and the drive cylinder 51 can be fitted inside the end of the inner tube 20 close to the eye side. A protrusion 511 is provided on the outer cylinder surface of the driver cylinder 51, and a position restricting groove 23 is provided correspondingly on the wall of the inner tube 20 of the inner tube 20. During the fitting of the driver cylinder 51 to the inner tube 20, the protrusion 511 can slide into the position restricting groove 23 from the end close 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 the 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 inner tube 20 wall of the inner tube 20, and each position restricting groove 23 can restrict the position of one protrusion 511, and 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 inner tube 20 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 realizing a balance in the distribution of the acting force 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.

[0102] Here, the shape of the protrusion 511 is not limited to a cylinder, a polygonal cylinder, or a hemisphere, and this embodiment is not limited thereto.

[0103] In addition, the protrusion 511 abuts against two opposing groove walls of the position restriction groove 23. This makes it possible to eliminate a fitting gap between the protrusion 511 and the two opposing groove walls of the position restriction groove 23. As a result, 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 restriction groove 23 when rotating in the circumferential direction, and can directly pull the inner tube 20 through the position restriction between the protrusion 511 and the position restriction groove 23 to rotate in the circumferential direction in sync, thereby ensuring and improving the rotational synchronism 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 prism, the edge of the protrusion 511 can be in line contact with the groove wall of the position control groove 23.

[0105] Furthermore, 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 hardly changes even while the outer tube 60 rotates around the spherical center of the ball joint 11 by 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 synchronously is ensured, while the risk of interference between parts, particularly the driver 50 and the inner tube 20, while the spherical center of the outer tube 60 rotates within the ball joint 11 can be reduced. EXAMPLES

[0107] The difference between this embodiment and the second embodiment is 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 and is hinged solely to the ball joint 11.

[0109] In addition, the end of the inner tube 20 close to the eye side does not protrude from the outer tube 60, i.e., it is located inside the outer tube 60. The ball head 62 of the outer tube 60 has a complete ball head 62 structure and is hingedly connected to the ball joint 11 alone, so that the separation of the ball head 62 from the ball joint 11 is restricted. Based on this, when the end of the outer tube 60 away from the eye side is subjected to force, the outer tube 60 can rotate gently and reliably a certain range around the spherical center of the ball joint 11. Installed in this way, it is also easy to achieve the purpose of adjustment and gun correction.

[0110] Referring to FIG. 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 secured to the end of the inner tube 20 closer to the eye side.

[0111] Based on the previous embodiment, the pressing ring 90 connected to the scope 10 can hold and restrict the position of the ball head 62, which is hingedly connected to the ball joint 11 alone, thereby reliably restricting the ball head 62 from coming off the ball joint 11. At the same time, the pressing ring 90 presses and restricts the position of the ball head 62 to the ball joint 11, so that the position of the outer tube 60 in the axial direction of the scope 10 can be effectively stabilized, thereby effectively restricting the movement of the outer tube 60 along the axial direction of the scope 10. Furthermore, the position restriction of the pressing ring 90 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 pressing ring 90 and the scope 10.

[0112] Based on the previous embodiment, the second stop ring 100 connected to the outer tube 60 can position and stop the end of the inner tube 20 close to the eye side, and can reliably limit the movement of the inner tube 20 in the direction close to the eye side, and can be fitted into a position restriction structure (e.g., a stopper portion 64) at the end of the inner tube 20 away from the eye side, and can jointly and reliably stabilize the position of the inner tube 20 in the axial direction of the outer tube 60, thereby reliably limiting the movement of the inner tube 20 along the axial direction of the outer tube 60. And, the first stop ring 70 positions and stops the end of the inner tube 20 close to the eye side, which does not affect the rotation of the inner tube 20 in the circumferential direction around its central axis. Here, this embodiment does not limit the connection method between the second stop ring 100 and the scope 10, and can adopt, for example, a screw connection.

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

[0114] The above description is merely a preferred embodiment of the present application, and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. 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 Module 83 Reset Structure 90 Retaining ring 100 Second retaining ring 110 Anti-rotation screw 120 Lock retaining ring 130 Synchronous screw 140 3rd retaining ring

Claims

1. A variable magnification sight, Scope and an inner tube that is attached within the scope and can rotate in a circumferential direction about its own central axis and whose position relative to the axial direction of the scope is stable; a variable magnification lens group that is attached in 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 is formed in a wall of one of the outer tube and the inner tube, extending in a spiral manner and penetrating the wall, and a straight groove is formed in a wall of the other of the two, extending along its axial direction and penetrating the wall, 2. A variable magnification sight according to claim 1, wherein said variable magnification lens group is provided with a slider which 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 side.

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

5. a flange is provided on an outer periphery of the end of the inner tube close to the eye side, the flange and the ball head are joined together to form a complete ball head structure, and the flange and the ball head are jointly hingedly connected to the ball joint; 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 limit removal of the flange and the ball head from the ball joint.

6. an end of the inner tube close to the eye side does not protrude from the outer tube; the ball head is a complete ball head structure and is hinged solely to the ball joint; 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 retained by the ball head and restricting the ball head from coming off the ball joint, and the second retaining ring being secured to the end of the inner tube closer to the eye side.

7. The variable magnification sight according to claim 4, characterized in that an anti-rotation groove is formed on the outer peripheral surface of the ball head and extending along the axial direction of the outer tube, a second screw hole is formed in the scope and extending along its radial direction and communicating with the anti-rotation groove, the variable magnification sight further includes an anti-rotation screw attached to the second screw hole, and a screw of the anti-rotation screw extends from the second screw hole and is positioned in the anti-rotation groove, thereby restricting the outer tube from rotating in a circumferential direction around 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 as claimed in claim 7, 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 a contact point or contact 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 cylinder fitted into the inner tube, a protrusion is provided on an outer cylinder surface of the drive cylinder, a position restriction groove is provided on an inner tube wall of the inner tube and extends along the axial direction of the drive cylinder, an end of the position restriction groove close to the eye side is connected to the outside of the inner tube, and the protrusion is positionally restricted by the position restriction groove, 9. The variable magnification sight according to claim 1, wherein the projection abuts against two opposing groove walls of the position restriction groove.

11. the driver has a drive cylinder fitted into the inner tube, a protrusion is provided on an outer cylinder surface of the drive cylinder, a position restriction groove is provided on an inner tube wall of the inner tube and extends along the axial direction of the drive cylinder, an end of the position restriction groove close to the eye side is connected to the outside of the inner tube, the protrusion is positionally 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 a contact point or line of the protrusion and a groove wall of the position restriction groove is located on the radial plane.

12. The variable magnification sight described in any one of claims 1 to 8, further including 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, 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 being fitted onto the outside of the driver, and a first screw hole being provided on the outer cylindrical surface of the cylindrical body extending radially therethrough, 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