Telescopic cylinder supporting structure of optical focuser

Abstract

The utility model relates to the technical field of optical accessories, in particular to a telescopic cylinder supporting structure of an optical focuser, which comprises a focusing seat, parallel bearings and a telescopic cylinder, the telescopic cylinder is arranged in the focusing seat, a plane is processed on the telescopic cylinder and is in tangent contact with the parallel bearings, and a plurality of bearing mounting positions are processed on the focusing seat and are distributed in a mutually angular manner. Bearings are mounted in the mounting position in series and in parallel; and the telescopic cylinder and the focusing seat do rolling friction reciprocating motion through the parallel bearings.

Description

Technical Field

[0001] This utility model relates to the production and processing of focusing devices, specifically a telescopic cylinder support structure for an optical focusing device. Background Technology

[0002] Optical focusers, commonly used in astronomical telescopes or microscopes, typically employ a rack and pinion system for drive. A base assembly is mounted on the focusing mount, containing gears. Focusing handwheels are mounted at both ends of the gears. A telescopic cylinder is installed inside the focusing mount, with a rack mounted on top. Rotating the focusing handwheels drives the gears, which mesh with the rack, thus moving the telescopic cylinder. A device is mounted at one end of the telescopic cylinder, allowing the focus point to be located and focusing achieved. For example, by attaching an eyepiece to the telescopic cylinder, rotating the focusing handwheel allows for quick refraction of a clear image, while rotating the fine focusing handwheel provides an even clearer image.

[0003] Focusing devices, as optical instruments, have been widely known and used for many years. Currently, most focusing device telescopic cylinders on the market are made of aluminum alloy, a material with relatively low hardness. Using single-row bearings for support has significant structural defects: firstly, the contact line between the bearing and the telescopic cylinder is short, making the cylinder susceptible to wear from the roller pressure of the single-row bearing; secondly, the short contact line between the bearing and the telescopic cylinder requires greater pressure to effectively resist torsion. Using materials with higher hardness for the telescopic cylinder or embedding high-hardness shims on the contact surface would increase weight or manufacturing costs, resulting in poor economic efficiency. Summary of the Invention

[0004] This utility model optical focuser is a novel telescopic cylinder support structure for optical focusers, and its purpose is to provide a technical solution that can effectively solve the problems of telescopic cylinders and enhance the stability of the focuser.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A telescopic cylinder support structure for an optical focuser includes a focus base, a telescopic cylinder, and parallel bearings. The focus base has parallel bearing mounting positions, a telescopic cylinder is installed inside the focus base, the telescopic cylinder has a flat surface, the telescopic cylinder is in tangential contact with the parallel bearings, and the parallel bearings are connected in series and fixedly installed in the mounting positions of the focus base. The parallel bearings are distributed along the circumference of the focus base at an angle to each other.

[0007] Preferably, the parallel bearing includes a first bearing, a second bearing, a shaft, and a washer. The first bearing and the second bearing are sleeved on the shaft, and a washer is respectively provided on the shaft outside the first bearing and the second bearing.

[0008] The beneficial effects of this utility model are mainly reflected in:

[0009] 1) Using parallel bearings effectively increases the contact line between the bearing and the telescopic cylinder plane, making the pressure on the telescopic cylinder more dispersed, reducing the wear rate of the telescopic cylinder, and effectively extending the service life of the focusing device.

[0010] 2) A longer bearing and telescopic cylinder contact line can provide better torsional resistance of the telescopic cylinder, making the focuser more stable.

[0011] 3) Parallel bearings have higher dynamic and static loads, resulting in a stronger load-bearing capacity for the focuser.

[0012] 4) Compared to manufacturing high-hardness telescopic cylinders or adding shims between the bearing and the telescopic cylinder, parallel bearings have a simpler manufacturing method and are more economical. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the assembled structure of this practical tool;

[0015] Figure 3 This is a schematic diagram of the angularly distributed parallel bearing and telescopic cylinder cooperation structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the position and structure of the shaft and gasket of this utility model. Detailed Implementation

[0017] The following is in conjunction with the appendix Figure 1 Appendix Figure 2 Appendix Figure 3 This utility model will be further described.

[0018] An optical focuser telescopic cylinder support structure includes a focus base 1, a telescopic cylinder 2, and parallel bearings 3. The focus base 1 has a bearing mounting position, and the parallel bearings 3 are arranged inside the mounting position. The telescopic cylinder 2 is arranged inside the focus base. The milled plane on the telescopic cylinder 2 contacts the parallel bearings 3. Multiple sets of parallel bearings contact the milled plane of the telescopic cylinder at an angle, which effectively reduces the pressure on the telescopic cylinder, reduces the wear of the telescopic cylinder, improves the torsional resistance of the telescopic cylinder, and improves the performance of the focuser.

[0019] The telescopic cylinder 2 and the focusing seat 1 reciprocate through rolling friction via parallel bearings 3. If hard materials are used to process the telescopic cylinder or hard shims are added between the bearings and the telescopic cylinder, the manufacturing and assembly costs will increase, which is not conducive to production and manufacturing and is also not economical.

[0020] The parallel bearing 3 includes a first bearing 4, a second bearing 5, a shaft 7, and a washer 6. The first bearing 4 and the second bearing 5 are sleeved on the shaft 7, and washer 6 is provided on the shaft 7 outside the first bearing 4 and the second bearing 5, which mainly serve the purpose of positioning.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A telescopic cylinder support structure for an optical focuser, comprising a focus mount (1), a telescopic cylinder (2), and parallel bearings (3), characterized in that: The focusing seat (1) is machined with mounting positions for parallel bearings (3). A telescopic cylinder (2) is installed inside the focusing seat (1). The telescopic cylinder (2) is machined with a flat surface. The telescopic cylinder (2) is in tangential contact with the parallel bearings (3). The parallel bearings (3) are connected in series and fixedly installed in the mounting positions of the focusing seat (1). The parallel bearings (3) are distributed at an angle to each other along the circumference of the focusing seat (1).

2. The telescopic cylinder support structure for an optical focuser according to claim 1, characterized in that: The parallel bearing (3) includes a first bearing (4), a second bearing (5), a shaft (7), and a gasket (6). The first bearing (4) and the second bearing (5) are sleeved on the shaft (7), and gaskets (6) are respectively provided on the shaft (7) outside the first bearing (4) and the second bearing (5).

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