CN206920702U - Floating type anodontia focusing mount - Google Patents

Abstract

The utility model discloses a floating gearless focusing seat, which belongs to the field of metalworking parts of optical instruments, and comprises a sliding inner cylinder and an outer cylinder slidingly matched with the sliding inner cylinder. The sliding inner cylinder can move axially in the outer cylinder; One end of the cylinder is provided with a mounting plate; the lower part of the sliding inner cylinder is provided with a focusing lever, and one end of the focusing lever is installed with a bearing three, the bearing three is fixed on the mounting plate, and the middle part of the focusing lever is fixed with a sliding The friction wheel in contact with the inner cylinder and the other end of the focusing rod are equipped with a bearing. 1. A movable support frame, the movable support frame is fixed on the mounting plate. Micro-movement limit groove; a U-shaped frame is arranged above the sliding inner cylinder, and a bearing 2 and a U-shaped limit block are installed on the U-shaped frame. The U-shaped limit block is fixed on the mounting plate, and the U-shaped limit block A U-shaped groove matched with the U-shaped frame is opened in the limit block. The toothless focusing base is stable, reliable and easy to use, which can effectively ensure the smooth use of the instrument.

Description

Floating gearless focusing seat

technical field

The utility model relates to a floating gearless focusing seat, which belongs to the field of metalworking components of optical instruments.

Background technique

During the use of microscopes and telescopes, it is often necessary to adjust the focus. In order to adjust the focus finely and stably, toothless focusing mounts are often used at present.

The current general-purpose toothless focuser has high requirements in manufacturing, installation, and debugging, and it is difficult to maintain concentricity. Especially during use, it needs to be adjusted regularly to maintain concentricity and flexible operation. Therefore, it is inconvenient to use and cumbersome to operate, which seriously affects the use of the instrument.

Contents of the invention

Aiming at the problems existing in the above-mentioned prior art, the utility model provides a floating gearless focusing seat, which is easy to operate and use, and can effectively ensure the normal use of the instrument.

In order to achieve the above purpose, the floating gearless focusing seat adopted by the utility model includes a sliding inner cylinder and an outer cylinder matched with the sliding inner cylinder, and the sliding inner cylinder can move axially along the inside of the outer cylinder;

One end of the outer cylinder is provided with a mounting plate;

The bottom of the sliding inner cylinder is provided with a focusing rod, and one end of the focusing rod is equipped with a bearing three, and the bearing three is fixed on the mounting plate, and the middle part of the focusing rod is fixed with a friction wheel in contact with the sliding inner cylinder. The other end of the focusing rod is equipped with a bearing 1. A movable support frame, the movable support frame is fixed on the mounting plate, and the movable support frame is provided with a limit groove for limiting the focus rod to only rotate and move up and down slightly;

The top of the sliding inner cylinder is provided with a U-shaped frame, and the U-shaped frame is equipped with a bearing 2 and a U-shaped limit block. The U-shaped limit block is fixed on the mounting plate, and the U-shaped limit block is opened inside. There is a U-shaped groove to cooperate with the U-shaped frame.

As an improvement, there are two bearings two, and the U-shaped limiting block is arranged between the two bearings.

As an improvement, the distance between the two bearings 2 and the friction wheel is the same.

As an improvement, one end of the U-shaped frame is connected to the third bearing, and the other end is connected to the first bearing through a spring.

As an improvement, the limit slot on the movable support frame is oblong.

Compared with the prior art, the gearless focusing seat of the present invention relies on the friction wheel installed on the focusing rod and the bearing 2 installed on the U-shaped frame, and the elastic clamping force of the sliding inner cylinder is stabilized by the spring. Clamping without generating radial force on the sliding inner cylinder, so that the sliding inner cylinder is suspended in the outer cylinder and slides freely, and then the focusing function is performed by rotating the focusing rod and driving the sliding inner cylinder to move axially through the friction wheel. The gearless focusing base is stable, fine and easy to use, which can effectively ensure the smooth use of the instrument.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a partial side view structural representation of the utility model;

Fig. 3 is the connection schematic diagram of U-shaped stop block in the utility model;

In the figure: 1. Spring, 2. Bearing 2, 3. U-shaped limit block, 4. U-shaped frame, 5. Mounting plate, 6. Sliding inner cylinder, 7. Focus lever, 8. Bearing 3, 9. Friction wheel, 10, bearing one, 11, movable supporting frame, 12, outer cylinder.

detailed description

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail through the accompanying drawings and embodiments below. However, it should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the scope of the utility model.

Unless otherwise defined, all technical terms and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the utility model, and the terms used in the description of the utility model herein are only for describing specific The purpose of the embodiments is not intended to limit the utility model.

As shown in Fig. 1, Fig. 2 and Fig. 3, a floating gearless focusing seat includes a sliding inner cylinder 6 and an outer cylinder 12 which is slidingly fitted with the sliding inner cylinder 6, and the sliding inner cylinder 6 can be mounted on the outer cylinder 12 Internal axial movement;

One end of the outer cylinder 12 is provided with a mounting plate 5;

The bottom of the sliding inner tube 6 is provided with a focusing rod 7, and one end of the focusing rod 7 is equipped with a bearing 3 8, and the bearing 3 8 is fixed on the mounting plate 5, and the middle part of the focusing rod 7 is fixed with a bearing 3 and the sliding inner The friction wheel 9 in contact with the barrel 6, the other end of the focusing lever 7 are equipped with a bearing 10 and a movable support frame 11, and the movable support frame 11 is fixed on the mounting plate 5, and the movable support frame 11 is provided with a ring for limiting the adjustment. The focus rod 7 is only used as a limit slot for rotation and fine movement up and down;

The top of the sliding inner tube 6 is provided with a U-shaped frame 4, and the U-shaped frame 4 is equipped with a bearing 2 and a U-shaped stop block 3, and the U-shaped limit block 3 is fixed on the mounting plate 5, A U-shaped groove matched with the U-shaped frame 4 is opened in the U-shaped limiting block 3 .

As an improvement of the embodiment, there are two bearings 2, and the U-shaped limiting block 3 is arranged between the two bearings 2 .

As a further improvement of the embodiment, the distances between the two bearings 2 and the friction wheels 9 are respectively the same. The two bearings 2 and the friction wheel 9 are arranged in an isosceles triangle, which effectively ensures that the sliding inner cylinder 6 can be provided with a uniform and stable clamping force.

As an improvement of the embodiment, one end of the U-shaped frame 4 is connected to the third bearing 8 , and the other end is connected to the first bearing 10 through the spring 1 . Due to the elastic force of the spring 1, the friction wheel 9 and the sliding inner cylinder 6 are in close contact and have a certain pressure, and at the same time there is no radial thrust, the sliding inner cylinder 6 and the outer cylinder 12 are in a floating state approximately, so when rotating When the friction wheel 9 can easily and smoothly push and slide the inner tube 6 to move axially and perform the focusing function.

As an improvement of the embodiment, the limiting groove on the movable supporting frame 11 is oblong, so that the focusing lever 7 can rotate and slightly move up and down in the limiting groove.

The toothless focusing seat of the present utility model relies on the friction wheel 9 installed on the focusing rod 7 and the bearing 22 installed on the U-shaped frame 4 to clamp the sliding inner cylinder 6, and will not cause any damage to the sliding inner cylinder 6. Radial force, so that the sliding inner cylinder 6 is suspended in the sliding outer cylinder 12 and slides freely, and then relies on the sliding inner cylinder 6 to perform axial movement to perform the focusing function. The toothless focusing seat is easy to operate and use, and can effectively ensure the smooth progress of the experiment.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modification, equivalent replacement or improvement made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (5)

1. floating type anodontia focusing mount, it is characterised in that including sliding inner cylinder (6), the outer barrel with sliding inner cylinder (6) sliding fit (12), the slip inner cylinder (6) can move axially in outer barrel (12)；

One end of the outer barrel (12) is provided with installing plate (5)；

The lower section for sliding inner cylinder (6) is provided with focusing lever (7), and one end of focusing lever (7) is provided with bearing three (8), the axle Hold three (8) to be fixed on installing plate (5), focusing lever (7) is fixedly arranged in the middle of a friction pulley being in contact with sliding inner cylinder (6) (9), the other end of focusing lever (7) is provided with bearing one (10), movable supporting rack (11), and the movable supporting rack (11) is fixed on On installing plate (5), it is provided with movable supporting rack (11) and is only rotated and the stopper slot of upper and lower fine motion for limiting focusing lever (7)；

The top for sliding inner cylinder (6) is provided with U-shaped frame (4), and bearing two (2), U-shaped limited block are provided with the U-shaped frame (4) (3), the U-shaped limited block (3) is fixed on installing plate (5), is provided with U-shaped limited block (3) U-shaped with U-shaped frame (4) cooperation Groove.

2. floating type anodontia focusing mount according to claim 1, it is characterised in that the bearing two (2) is with two, two The U-shaped limited block (3) is provided between bearing two (2).

3. floating type anodontia focusing mount according to claim 2, it is characterised in that the two bearings two (2) and friction pulley (9) distance between is identical.

4. floating type anodontia focusing mount according to claim 1, it is characterised in that one end of the U-shaped frame (4) and bearing Three (8) are connected, and the other end is connected by spring (1) with bearing one (10).

5. floating type anodontia focusing mount according to claim 1, it is characterised in that the limit on the movable supporting rack (11) Position groove is Long Circle.