Zoom device

Abstract

The invention relates to a zoom device, which includes a body, an outer cylinder, an inner cylinder, an adjustment ring and a positioning member for the adjustment ring. The inner cylinder is arranged inside the body, a positioning hole is formed on the outer cylinder, and the outer cylinder is rotatable. The adjustment ring is rotatably sleeved on the body. The adjustment ring positioning member includes a fixing piece, an elastic body and a positioning cylinder. The positioning cylinder passes through the body and the positioning hole in sequence and then abuts Connected to the outer peripheral surface of the inner cylinder, the fixing member is arranged on the adjusting ring, one end of the elastic body abuts against the fixing member, and the other end abuts against the inside of the positioning cylinder, wherein turning the adjusting ring can drive The outer cylinder rotates relative to the body and the inner cylinder.

Description

technical field [0001] The invention relates to a zoom device, in particular to a zoom device using a two-stage adjusting ring positioning member. Background technique [0002] see figure 1 , figure 1 It shows the structural diagram of the existing zoom device 1, the zoom device 1 includes a main body 10, an outer cylinder 20, an inner cylinder 30, a magnification adjustment ring 40 and a positioning screw 50, wherein the rotation of the magnification adjustment ring 40 can drive the outer cylinder 20 to be opposite to each other. When the body 10 and the inner cylinder 30 rotate, the assembly of these components is described in detail below: [0003] Such as figure 1 As shown, the inner cylinder 30 is disposed inside the body 10 , the outer cylinder 20 is rotatably sleeved on the outside of the inner cylinder 30 , the positioning hole 25 is formed on the outer cylinder 20 , and the magnification adjusting ring 40 is rotatably sleeved on the body 10 The screw hole 45 is ...

AI Technical Summary

Problems solved by technology

[0005] Conventional sights often use the above-mentioned existing zoom device 1. When assembling, the main body 10, the outer cylinder 20, the inner cylinder 30 and the magnification adjustment ring 40 are usually assembled first, and then the set screw 50 is installed and locked. However, since the positioning hole 25 on the outer cylinder 20 cannot be seen directly from the appearance, and the material of the positioning screw 50 (for example, iron metal) is harder than the material of the outer cylinder 20 (for example, aluminum alloy), the hardness is higher. If the position of the positioning hole 25 is not aligned during the locking process, it may cause damage to the positioning hole 25 or its surroundings. In addition, if the debris generated after the damage penetrates into the outer cylinder 20 and the inner cylinder 30 through the positioning hole 25 In between, it will cause the entire device to not move smoothly, so it must be dismantled and cleaned, which will increase damage and man-hours

[0006] Furthermore, traditional sights often use a bounce adjustment piece to adjust the inclination angle of the outer cylinder 20 and the inner cylinder 30 relative to the body 10 to perform bounce correction. When the inclination angle of the cylinder 30 changes, there may be an interference transition between the set screw 50 and the inner cylinder 30, causing the inner cylinder 30 to be scratched by the set screw 50

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