Adjusting base of optometry unit

Abstract

The utility model relates to the technical field of optometry, in particular to an optometry unit adjusting base. Comprising a mounting shell, a moving frame is arranged above the mounting shell, a rocking handle component is mounted in the moving frame, the moving frame is connected with the mounting shell through the moving component, the rocking handle component comprises a rocking handle hemisphere seat arranged on the moving frame, a hemisphere is arranged in the rocking handle hemisphere seat, a rocker penetrating through the moving frame is arranged at the bottom of the hemisphere, and a sliding block is arranged at the bottom of the rocker; a first grating is fixedly arranged on the outer side of the rocking handle hemisphere seat, a first counting group is arranged on one side of the first grating, the first counting group is connected with the input end of the controller, and the output end of the controller is connected with the motor; a motor is arranged above the movable frame, the output end of the motor is connected with a lead screw, and a nut on the lead screw is fixedly connected with the window instrument. The moving part comprises a first moving support and a second moving support, a first moving shaft is arranged between the first moving support and the second moving support, and a moving block is arranged on the first moving shaft in a sliding mode.

Description

Technical Field

[0001] The utility model relates to the technical field of optometry, in particular to an optometry instrument adjustment base. Background Art

[0002] Currently, vision is checked with an eye chart to check the eye's resolution ability, while optometry checks the eye's refractive state. Although these two different tests have a certain correlation, they have different purposes and cannot replace each other. When using an optometrist to test vision, it is necessary to adjust the position of the patient's eyes so that the eye baseline is aligned with the eye position mark, and then the baseline of the optical unit is moved to align with the human eye. At this time, the light hole of the optical unit covers the human eye, and the corneal image can be observed on the screen and the refractive power can be measured. However, due to the different heights of the people being measured, the placement height of the optometrist cannot be adapted to everyone.

[0003] The existing ophthalmometer adjustment base drives the window instrument to move left and right by controlling the slider through a crank handle, drives the window instrument to move forward and backward by controlling the roller through the crank handle, and drives the display screen to move up and down by controlling the transmission of the gear rack through the crank handle. The movement accuracy of this setting is not high, which makes it impossible to accurately measure the vision of the measured person, thereby increasing the measurement error. In addition, the existing structure is simple, the forward and backward and left and right movement is not stable enough, the quality is poor, and it is easy to be damaged, which is also easy to cause errors in the test results. Utility Model Content

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect of low movement accuracy of the existing ophthalmometer adjustment base, thereby providing an ophthalmometer adjustment base.

[0005] In order to solve the above problems, the utility model provides an ophthalmometer adjustment base, comprising a mounting shell, a support column provided at the bottom of the mounting shell, a movable frame provided above the mounting shell, a crank component installed in the movable frame, the movable frame being connected to the mounting shell via the movable frame, the crank component comprising a crank hemispherical seat provided on the movable frame, a hemisphere provided in the crank hemispherical seat, a crank fixedly connected to the top of the hemisphere, a rocker penetrating the movable frame provided at the bottom of the hemisphere, and a slider provided at the bottom of the rocker;

[0006] The mounting shell is provided with a slide plate corresponding to the position of the slider;

[0007] A first grating is fixedly provided on the outer side of the crank hemispherical seat, a first counting group is provided on one side of the first grating, and the first counting group is fixedly provided on the mobile frame; the first counting group is connected to the input end of the controller, and the output end of the controller is connected to the motor;

[0008] A mounting frame is provided above the mobile frame, a motor is provided on the mounting frame, a screw rod is connected to the output end of the motor, and a nut on the screw rod is fixedly connected to the window instrument;

[0009] A protruding shell is provided on the movable frame, and an installation space is formed between the protruding shell and the mounting shell. The movable component is arranged in the installation space. The movable component includes a first movable support and a second movable support, which are fixedly provided on the mounting shell, and the first movable support and the second movable support are arranged opposite to each other. A first movable shaft is provided between the first movable support and the second movable support, and a movable block is slidably provided on the first movable shaft. A protrusion is provided above the movable block, and a second movable shaft is provided at the left and right ends of the protrusion, and both ends of the second movable shaft are fixedly connected to the movable frame.

[0010] Preferably, an optical coupler bracket is provided on the top of the movable frame, a zeroing optical coupler and a second counting group are fixedly provided below the optical coupler bracket via a connecting column, and a strip-shaped second grating is provided at the bottom of the second counting group.

[0011] Preferably, the movable frame is provided with a protruding outer edge at the outer edge of the crank hemispherical seat, an annular first groove is formed below the protruding outer edge, a fixing seat is provided in the first groove, an annular second groove is provided on the fixing seat, the crank hemispherical seat is fixedly provided in the second groove, and a bearing outer ring and a bearing inner ring are provided between the fixing seat and the rocker;

[0012] A bearing is arranged between the fixed seat and the crank hemispherical seat, a convex table is arranged on the upper side of the fixed seat, and a bearing retaining ring is arranged above the convex table.

[0013] Preferably, a fixing plate is installed at the bottom of the moving block, and both ends of the fixing plate are fixedly connected to the bottom of the mounting frame.

[0014] Preferably, the slide plate is made of smooth polyethylene.

[0015] The utility model has the following advantages:

[0016] The first counting group passes through several grids of the first grating, and the first counting group transmits the signal to the controller. The controller controls the motor to start, thereby driving the screw rod to rotate, and the screw rod drives the nut to slide up and down, thereby driving the window instrument to move up and down, making it convenient for staff to lift and lower according to different situations. The movement has high accuracy and can accurately measure the vision of the person being measured, thereby reducing the measurement error. When the rocker moves left and right, the moving frame drives the slider to slide along the second moving axis. When the rocker moves back and forth, the moving frame drives the slider to slide along the first moving axis, and the movement is relatively smooth. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 The structure diagram of the adjustment base of the optometer of the present invention is shown;

[0019] Figure 2 Shows a right side view of the utility model;

[0020] Figure 3 Shows a partial structural schematic diagram of the utility model;

[0021] Figure 4 Shows a structural schematic diagram of the utility model from another angle;

[0022] Figure 5 Shows a rear view of the present invention;

[0023] Figure 6 Shown Figure 5 Cross-sectional view at point A;

[0024] Figure 7 The schematic diagram of the structure of the utility model from a top view is shown.

[0025] Description of reference numerals:

[0026] 1. Mounting housing; 2. Moving frame; 201. Protruding housing; 202. Protruding outer edge; 203. Mounting frame; 204. Motor; 205. Screw rod; 206. Nut; 3. Crank assembly; 301. Crank hemispherical seat; 302. Crank; 303. Hemisphere; 304. First grating; 305. First counting group; 306. Fixed seat; 307. Slider; 308. Crank; 309. Bearing outer ring; 310. Bearing inner ring; 311. Bearing retaining ring; 312. Second groove; 313. Slide plate; 314. Bearing; 5. Moving parts; 501. First moving support; 502. Second moving support; 503. Protrusion; 504. Moving block; 505. First moving axis; 506. Second counting group; 507. Second moving axis; 508. Second grating; 509. Optocoupler bracket; 510. Zeroing optical coupler; 512. Fixed plate; 6. Window instrument; 7. Support column. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0028] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] This embodiment provides an optometry adjustment base, such as Figure 1-Figure 2 As shown, it includes a mounting shell 1, a support column 7 is provided at the bottom of the mounting shell 1, a mobile frame 2 is provided above the mounting shell 1, a crank component 3 is installed in the mobile frame 2, and the mobile frame 2 is connected to the mounting shell 1 through a moving component 5, characterized in that the crank 302 component 3 includes a crank hemispherical seat 301 provided on the mobile frame 2, a hemisphere 303 is provided in the crank hemispherical seat 301, the top of the hemisphere 303 is fixedly connected to the crank 302, a rocker 308 is provided at the bottom of the hemisphere 303 that passes through the mobile frame 2, and a slider 307 is provided at the bottom of the rocker 308; a slide plate 313 corresponding to the position of the slider 307 is provided on the mounting shell 1; the crank hemispherical seat 3 A first grating 304 is fixedly provided on the outer side of 01, and a first counting group 305 is provided on one side of the first grating 304. The first counting group includes a first photoelectric sensor and a second photoelectric sensor. The first counting group is fixedly provided on the movable frame 2, and the first photoelectric sensor is provided on the inner side of the first photoelectric sensor; the first counting group 305 is connected to the input end of the controller, and the output end of the controller is connected to the motor 204; a mounting frame 203 is provided above the movable frame 2, and a motor 204 is provided on the mounting frame 203, and the output end of the motor 204 is connected to a screw rod 205, and the nut 206 on the screw rod 205 is fixedly connected to the window instrument 6.

[0030] The slide plate 313 is made of smooth polyethylene, and the bottom of the slider 307 is a spherical surface, ensuring that the slider 307 can slide on the slide plate 313 .

[0031] like Figure 3-Figure 4As shown, a protrusion 503 is provided on the movable frame 2, and an installation space is formed between the protrusion 503 and the mounting shell 1. The movable component 5 is arranged in the installation space, and the movable component 5 includes: a first movable support 501 and a second movable support 502, which are fixedly provided on the mounting shell 1, and the first movable support 501 and the second movable support 502 are arranged opposite to each other, and a first movable shaft 505 is provided between the first movable support 501 and the second movable support 502, and a movable block 504 is slidingly provided on the first movable shaft 505, and a protrusion 503 is provided above the movable block 504, and a second movable shaft 507 is provided at the left and right ends of the protrusion 503, and both ends of the second movable shaft 507 are fixedly connected to the movable frame 2.

[0032] like Figure 4 As shown, an optical coupler bracket 509 is provided on the top of the mobile frame 2, and a zeroing optical coupler 510 and a second counting group 506 are fixedly provided below the optical coupler bracket 509 through a connecting column. The second counting group 506 includes a third photoelectric sensor and a fourth photoelectric sensor. A strip-shaped second grating 508 is provided at the bottom of the second counting group 506. The grid number signal of the second counting group 506 passing through the second grating 508 is transmitted to the window instrument 6. When the second counting group 506 slides to the zeroing optical coupler 510, the mobile data is cleared and counting starts again.

[0033] like Figure 6-Figure 7 As shown, the movable frame 2 is provided with a protruding outer edge 202 at the outer edge of the crank hemispherical seat 301, and a first annular groove is formed below the protruding outer edge 202, and a fixed seat 306 is provided in the first groove, and an annular second groove 312 is provided on the fixed seat 306, and the crank hemispherical seat 301 is fixedly set in the second groove 312, and a bearing outer ring 309 and a bearing inner ring 310 are provided between the fixed seat 306 and the rocker 308; a bearing 314 is provided between the fixed seat 306 and the crank 302 hemisphere 303 seat 301, and a boss surface is provided on the upper side of the fixed seat 306, and a bearing retaining ring 311 is provided above the boss surface. The second groove 312 and the protruding outer edge 202 provided on the fixed seat 306 ensure the stable installation of the crank hemispherical seat 301, and the bearing 314, the bearing outer ring 309 and the bearing inner ring 310 ensure the stable connection between the rocker 308 and the fixed seat 306.

[0034] As shown in Figure 8, a fixed plate 512 is installed at the bottom of the moving block 504. The two ends of the fixed plate 512 are fixedly connected to the bottom of the mounting frame 203. A power supply is installed on the fixed plate 512. The bottom of the moving component 5 is shielded by the fixed plate 512 to prevent it from loosening and falling. It can be disassembled after being used for a long time to clean the dust inside the moving component 5.

[0035] When the base is adjusted, the movable frame 2 is driven to move by shaking the rocker 308. At this time, the slider 307 slides on the slide plate 313. When the rocker 308 is at different angles, appropriate sliding damping is maintained. When the rocker 308 moves left and right, the movable frame 2 drives the slider 307 to slide along the second moving axis 507. When the rocker 308 moves back and forth, the movable frame 2 drives the slider 307 to slide along the first moving axis 505. The movement is relatively smooth. When the window instrument 6 needs to be raised or lowered, the rocker 308 is turned. At this time, the first counting group 305 passes through a number of grids of the first grating 304. The first counting group 305 transmits a signal to the controller. The controller controls the motor 204 to start, thereby driving the screw rod 205 to rotate, and the screw rod 205 drives the nut 206 to slide up and down, thereby driving the window instrument 6 to move up and down, which is convenient for the staff to lift and lower according to different situations. The movement is highly accurate, and the vision of the person being measured can be accurately measured, thereby reducing the measurement error.

[0036] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. An ophthalmometer adjustment base, comprising a mounting shell (1), a support column (7) being arranged at the bottom of the mounting shell (1), a movable frame (2) being arranged above the mounting shell (1), a crank component (3) being arranged in the movable frame (2), and the movable frame (2) being connected to the mounting shell (1) via a movable component (5), characterized in that: The crank component (3) comprises a crank hemispherical seat (301) arranged on the movable frame (2), a hemisphere (303) being arranged inside the crank hemispherical seat (301), a crank (302) being fixedly connected to the top of the hemisphere (303), a rocker (308) penetrating the movable frame (2) being arranged at the bottom of the hemisphere (303), and a slider (307) being arranged at the bottom of the rocker (308); The mounting shell (1) is provided with a slide plate (313) corresponding to the position of the slide block (307); A first grating (304) is fixedly arranged on the outer side of the crank hemispherical seat (301); a first counting group (305) is arranged on one side of the first grating (304); the first counting group (305) is fixedly arranged on the moving frame (2); the first counting group (305) is connected to the input end of the controller, and the output end of the controller is connected to the motor (204); A mounting frame (203) is arranged above the movable frame (2), a motor (204) is arranged on the mounting frame (203), a screw rod (205) is connected to the output end of the motor (204), and a nut (206) on the screw rod (205) is fixedly connected to the window instrument (6); The movable frame (2) is provided with a protruding shell (201), and an installation space is formed between the protruding shell (201) and the installation shell (1). The movable component (5) is arranged in the installation space. The movable component (5) comprises a first movable support (501) and a second movable support (502), which are fixedly arranged on the installation shell (1), and the first movable support (501) and the second movable support (502) are arranged opposite to each other. A first movable shaft (505) is arranged between the first movable support (501) and the second movable support (502), and a movable block (504) is slidably arranged on the first movable shaft (505). A protruding portion (503) is arranged above the movable block (504), and a second movable shaft (507) is arranged at the left and right ends of the protruding portion (503), and the two ends of the second movable shaft (507) are fixedly connected to the movable frame (2).

2. The ophthalmometer adjustment base according to claim 1, characterized in that: An optical coupling bracket (509) is arranged on the top of the movable frame (2), a zeroing optical coupling (510) and a second counting group (506) are fixedly arranged below the optical coupling bracket (509) via a connecting column, and a strip-shaped second grating (508) is arranged at the bottom of the second counting group (506).

3. The ophthalmometer adjustment base according to claim 1, characterized in that: The movable frame (2) is provided with a protruding outer edge (202) at the outer edge of the crank hemispherical seat (301); a first annular groove is formed below the protruding outer edge (202); a fixing seat (306) is provided in the first groove; a second annular groove (312) is provided on the fixing seat (306); the crank hemispherical seat (301) is fixedly provided in the second groove (312); a bearing outer ring (309) and a bearing inner ring (310) are provided between the fixing seat (306) and the rocker (308); A bearing (314) is arranged between the fixing seat (306) and the crank hemispherical seat (301), a boss surface is arranged on the upper side of the fixing seat (306), and a bearing retaining ring (311) is arranged above the boss surface.

4. The ophthalmometer adjustment base according to claim 1, characterized in that: A fixing plate (512) is installed at the bottom of the moving block (504), and two ends of the fixing plate (512) are fixedly connected to the bottom of the mounting frame (203).

5. The ophthalmometer adjustment base according to claim 1, characterized in that: The slide plate (313) is made of smooth polyethylene.

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