Eye vision light instrument for visual survey

Abstract

The utility model relates to an ophthalmic optical instrument for visual survey, which belongs to the technical field of visual survey and comprises a base, an ophthalmic optical instrument body is arranged on the upper side of the base, and a height adjusting mechanism for adjusting the height of the ophthalmic optical instrument body is arranged on the lower surface of the ophthalmic optical instrument body. A horizontal adjusting mechanism used for adjusting the horizontal position of the eye vision optical instrument body is arranged between the opposite sides of the left side wall and the right side wall of the inner cavity of the base. The height adjusting mechanism comprises a supporting plate fixed to the lower surface of the eye sight light instrument body, and a mounting base is fixed to the lower side of the supporting plate. According to the ophthalmic optical instrument for visual survey, through the arrangement of the supporting plate, the mounting base, the fixed plate, the sliding plate, the rotating shaft, the rotating rod, an eccentric gear and a motor, the height of the ophthalmic optical instrument body can be adjusted, so that the height of the ophthalmic optical instrument body can be adjusted according to the heights of different examinees, and the practicability is improved; and the influence on the inspection result is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vision census, in particular to an ophthalmological instrument used for vision census. Background Art

[0002] Visual image detection is to use machines instead of human eyes to make measurements and judgments. The machine vision system refers to the system that converts the captured target into image signals through machine vision products, transmits them to a dedicated image processing system, and converts them into digital signals based on pixel distribution, brightness, color and other information; image intelligent recognition system software and other systems analyze these signals to perform various operations to extract the characteristics of the target, and then control the on-site equipment based on the judgment results.

[0003] Through searching, it was found that Chinese patent publication number: CN215128431U discloses an ophthalmological instrument for objective visual census, including an adjustment protection mechanism and a positioning mechanism, the adjustment protection mechanism includes a base, a No. 1 fixed plate and a non-slip rubber pad, the base is fixedly connected to the slide slot, the slide slot is slidably connected to the slider, the No. 1 fixed plate is fixedly connected to one end of the No. 1 telescopic rod, the other end of the No. 1 telescopic rod is fixedly connected to the slider, and the non-slip rubber pad is fixedly connected to the No. 1 fixed plate, the comfort is improved by the sponge cushion layer, and the instrument body is tested. When the device is not in use, the No. 1 fixed knob is loosened, and the No. 1 telescopic rod and No. 1 spring are used to perform telescopic deformation, so as to provide shock-absorbing protection for the instrument body when it is placed. However, when checking vision, the utility model is not convenient for adjusting the height of the ophthalmological instrument according to the height of the person who needs to check vision, which makes it inconvenient for the person who needs to check vision during the examination, affecting the result of the examination. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an ophthalmic optometry instrument for vision screening, which has the advantages of being able to adjust the height of the ophthalmic optometry instrument, etc., thereby solving the problem that when checking vision, it is inconvenient to adjust the height of the ophthalmic optometry instrument according to the height of the person whose vision needs to be checked, which makes it inconvenient for the person who needs to check the vision during the examination and affects the examination results.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an optometry instrument for visual census, comprising a base, an optometry instrument body is provided on the upper side of the base, a height adjustment mechanism for adjusting the height of the optometry instrument body is provided on the lower surface of the optometry instrument body, and a level adjustment mechanism for adjusting the horizontal position of the optometry instrument body is provided between opposite sides of the left and right side walls of the inner cavity of the base;

[0006] The height adjustment mechanism includes a support plate fixed to the lower surface of the ophthalmic instrument body, a mounting seat is fixed to the lower side of the support plate, fixed plates are fixed to the left and right ends of the inner bottom wall of the mounting seat, the inner cavity of the fixed plate is slidably connected with a sliding plate, a rotating shaft is rotatably connected between the opposite sides of the two fixed plates and the opposite sides of the two sliding plates through a bearing, a rotating rod is fixed between the opposite sides of the rotating shaft on the left and right sides, an eccentric gear is fixed to the middle part of the outer surface of the rotating rod, the two eccentric gears are meshed and connected, the right side of the rotating shaft on the lower right end passes through the fixed plate and extends to the right side of the fixed plate and is fixed with a motor.

[0007] Furthermore, a support frame is fixed at the right end of the upper surface of the support plate and located on the right side of the ophthalmic instrument body, and a support plate is fixed at the bottom of the inner cavity of the support frame.

[0008] Furthermore, the mounting seat is in the shape of a rectangular parallelepiped which is hollow inside and has a missing upper surface, and the fixing plate is in the shape of a rectangular parallelepiped which is hollow inside and has a missing upper surface and left and right sides.

[0009] Furthermore, the upper surfaces of the two sliding plates are fixed to the support plate, and the two sliding plates are symmetrically distributed on the left and right sides of the vertical center axis of the support plate.

[0010] Furthermore, a slide groove is provided on the opposite side of the front and rear side walls of the inner cavity of the fixed plate, and a slider is fixed at the bottom of the front and back sides of the sliding plate. The slider makes linear up and down motion in the inner cavity of the slide groove, and eccentric wheels are fixed at the left and right ends of the outer surface of the rotating rod.

[0011] Furthermore, the horizontal adjustment mechanism includes a threaded rod rotatably connected between opposite sides of the left and right side walls of the inner cavity of the base through a bearing, the left side of the threaded rod penetrates the base and extends to the left side of the base and is fixed with a handle, the outer surface of the threaded rod is threadedly connected to two screw sleeves, the upper surface of the screw sleeve is fixed with a linkage rod, the upper surface of the linkage rod penetrates the base and extends to the upper side of the base and is fixed to the lower surface of the mounting seat.

[0012] Furthermore, a slide bar is fixed to the inner bottom wall of the base, a slide rod is fixed to the lower surface of the screw sleeve, and the slide rod performs horizontal linear motion in the inner cavity of the slide bar.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] 1. The optometry instrument for visual census can adjust the height of the optometry instrument body through the arrangement of a support plate, a mounting seat, a fixed plate, a sliding plate, a rotating shaft, a rotating rod, an eccentric gear and a motor, so that the height of the optometry instrument body can be adjusted according to the height of different examiners, thereby improving practicality and reducing the impact on the examination results.

[0015] 2. The ophthalmology instrument used for visual census can move the threaded sleeve threaded on the surface of the instrument by rotating the threaded rod, thereby driving the two linkage rods to move, thereby moving the mounting seat, and adjusting the horizontal position of the ophthalmology instrument body, thereby improving the adjustment efficiency of the staff and eliminating the need for fixing with bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of a novel structure of a practical height adjustment mechanism;

[0018] Figure 3 It is a schematic diagram of the structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the horizontal adjustment mechanism of the utility model.

[0020] In the figure: 1 base, 2 optometry instrument body, 3 height adjustment mechanism, 301 support plate, 302 mounting seat, 303 fixed plate, 304 sliding plate, 305 rotating shaft, 306 rotating rod, 307 eccentric gear, 308 motor, 4 level adjustment mechanism, 401 threaded rod, 402 screw sleeve, 403 linkage rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1 In this embodiment, an ophthalmic instrument for vision census includes a base 1, an ophthalmic instrument body 2 is provided on the upper side of the base 1, a height adjustment mechanism 3 for adjusting the height of the ophthalmic instrument body 2 is provided on the lower surface of the ophthalmic instrument body 2, and a horizontal adjustment mechanism 4 for adjusting the horizontal position of the ophthalmic instrument body 2 is provided between the opposite sides of the left and right side walls of the inner cavity of the base 1.

[0023] See also Figure 2-3In order to adjust the height of the ophthalmic instrument body 2, the height adjustment mechanism 3 in this embodiment includes a support plate 301 fixed to the lower surface of the ophthalmic instrument body 2, a mounting seat 302 is fixed to the lower side of the support plate 301, fixed plates 303 are fixed to the left and right ends of the inner bottom wall of the mounting seat 302, a sliding plate 304 is slidably connected to the inner cavity of the fixed plate 303, a rotating shaft 305 is rotatably connected between the opposite sides of the two fixed plates 303 and the opposite sides of the two sliding plates 304 through bearings, a rotating rod 306 is fixed between the opposite sides of the rotating shafts 305 on the left and right sides, an eccentric gear 307 is fixed to the middle part of the outer surface of the rotating rod 306, the two eccentric gears 307 are meshed and connected, and the lower right end The right side of the side rotating shaft 305 passes through the fixed plate 303 and extends to the right side of the fixed plate 303 and is fixed with a motor 308. When the motor 308 is started, the output shaft of the motor 308 rotates, thereby driving the rotating shaft 305 at the right end of the lower side to rotate, thereby rotating the lower rotating rod 306. The rotation of the lower rotating rod 306 drives the lower eccentric gear 307 to rotate. At this time, the eccentric wheels on the left and right ends of the outer surface of the lower rotating rod 306 rotate, and the rotation of the lower eccentric gear 307 drives the upper eccentric gear 307 to rotate. The rotation of the lower eccentric gear 307 drives the rotating shaft 305 to move upward, and then the sliding plate 304 moves upward in the inner cavity of the fixed plate 303, so that the height of the ophthalmic instrument body 2 can be adjusted.

[0024] In this embodiment, a support frame is fixed to the right end of the upper surface of the support plate 301 and located on the right side of the ophthalmic instrument body 2, a support plate is fixed to the bottom of the inner cavity of the support frame, the mounting seat 302 is shaped like a rectangular parallelepiped with a hollow interior and a missing upper surface, and the fixed plate 303 is shaped like a rectangular parallelepiped with a hollow interior and a missing upper surface and left and right sides.

[0025] Among them, the upper surfaces of the two sliding plates 304 are fixed to the supporting plate 301, and the two sliding plates 304 are symmetrically distributed on the left and right sides of the vertical central axis of the supporting plate 301. Slide grooves are opened on the opposite sides of the front and rear side walls of the inner cavity of the fixed plate 303, and sliders are fixed to the bottom of the front and back sides of the sliding plates 304. The sliders make linear up and down motions in the inner cavity of the slide grooves, and eccentric wheels are fixed to the left and right ends of the outer surface of the rotating rod 306.

[0026] It should be noted that when the sliding plate 304 moves, the sliders fixed on the front and back sides thereof slide in the inner cavity of the sliding groove, so as to limit the movement of the sliding plate 304 .

[0027] See also Figure 4In order to adjust the horizontal position of the ophthalmic instrument body 2, the horizontal adjustment mechanism 4 in this embodiment includes a threaded rod 401 rotatably connected between the opposite sides of the left and right side walls of the inner cavity of the base 1 through a bearing. The left side of the threaded rod 401 penetrates the base 1 and extends to the left side of the base 1 and is fixed with a handle. The outer surface of the threaded rod 401 is threadedly connected with two screw sleeves 402. Turning the handle causes the threaded rod 401 to rotate. The rotation of the threaded rod 401 causes the screw sleeve 402 threadedly connected to its surface to move. A linkage rod 403 is fixed to the upper surface of the screw sleeve 402. The upper surface of the linkage rod 403 penetrates the base 1 and extends to the upper side of the base 1 and is fixed to the lower surface of the mounting seat 302. The movement of the two screw sleeves 402 drives the two linkage rods 403 to move, thereby causing the mounting seat 302 to move, thereby being able to adjust the horizontal position of the ophthalmic instrument body 2.

[0028] Among them, a sliding bar is fixed on the inner bottom wall of the base 1, and a sliding rod is fixed on the lower surface of the screw sleeve 402. The sliding rod makes horizontal linear motion in the inner cavity of the sliding bar. When the screw sleeve 402 moves, the sliding rod fixed on its lower surface moves in the inner cavity of the sliding bar, thereby limiting the movement of the screw sleeve 402 and making it move linearly.

[0029] The working principle of the above embodiment is:

[0030] (1) When the height of the ophthalmic instrument body 2 needs to be adjusted, the motor 308 is first started, and the output shaft of the motor 308 rotates, thereby driving the rotating shaft 305 at the right end of the lower side to rotate, so that the lower rotating rod 306 rotates, and the rotation of the lower rotating rod 306 drives the lower eccentric gear 307 to rotate. At this time, the eccentric wheels at the left and right ends of the outer surface of the lower rotating rod 306 rotate, and the rotation of the lower eccentric gear 307 drives the upper eccentric gear 307 to rotate. The rotation of the lower eccentric gear 307 drives the rotating shaft 305 to move upward. At this time, the eccentric wheels at the upper and lower ends rotate with each other, thereby causing the sliding plate 304 to move upward in the inner cavity of the fixed plate 303. When the sliding plate 304 moves, the sliders fixed on the front and back sides slide in the inner cavity of the slide groove, which can limit the movement of the sliding plate 304 until it is adjusted to a suitable height.

[0031] (2) When the horizontal position of the ophthalmic instrument body 2 needs to be adjusted, first turn the handle to rotate the threaded rod 401. The rotation of the threaded rod 401 causes the screw sleeve 402 threadedly connected to its surface to move. The movement of the two screw sleeves 402 drives the two linkage rods 403 to move, thereby moving the mounting base 302, and then adjusting the horizontal position of the ophthalmic instrument body 2. When the screw sleeve 402 moves, the sliding rod fixed on its lower surface moves in the inner cavity of the sliding bar, thereby limiting the movement of the screw sleeve 402 and making it move in a straight line.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. An optometry instrument for visual census, comprising a base (1), characterized in that: An ophthalmic instrument body (2) is provided on the upper side of the base (1), a height adjustment mechanism (3) for adjusting the height of the ophthalmic instrument body (2) is provided on the lower surface of the ophthalmic instrument body (2), and a horizontal adjustment mechanism (4) for adjusting the horizontal position of the ophthalmic instrument body (2) is provided between opposite sides of the left and right side walls of the inner cavity of the base (1); The height adjustment mechanism (3) comprises a support plate (301) fixed on the lower surface of the ophthalmic instrument body (2), a mounting seat (302) being fixed on the lower side of the support plate (301), a fixed plate (303) being fixed on both the left and right ends of the inner bottom wall of the mounting seat (302), a sliding plate (304) being slidably connected to the inner cavity of the fixed plate (303), a rotating shaft (305) being rotatably connected between the opposite sides of the two fixed plates (303) and the opposite sides of the two sliding plates (304) via bearings, a rotating rod (306) being fixed between the opposite sides of the rotating shaft (305) on the left and right sides, an eccentric gear (307) being fixed on the middle part of the outer surface of the rotating rod (306), the two eccentric gears (307) being meshingly connected, and the right side of the rotating shaft (305) on the lower right end passes through the fixed plate (303) and extends to the right side of the fixed plate (303) and is fixed with a motor (308).

2. The optometry instrument for visual examination according to claim 1, characterized in that: A support frame is fixed at the right end of the upper surface of the support plate (301) and located on the right side of the ophthalmic instrument body (2), and a support plate is fixed at the bottom of the inner cavity of the support frame.

3. The optometry instrument for visual examination according to claim 1, characterized in that: The shape of the mounting seat (302) is a rectangular parallelepiped with a hollow interior and a missing upper surface, and the shape of the fixing plate (303) is a rectangular parallelepiped with a hollow interior and a missing upper surface and left and right sides.

4. The optometry instrument for visual examination according to claim 1, characterized in that: The upper surfaces of the two sliding plates (304) are fixed to the support plate (301), and the two sliding plates (304) are symmetrically distributed on the left and right sides of the vertical central axis of the support plate (301).

5. The optometry instrument for visual examination according to claim 1, characterized in that: The fixed plate (303) has a slide groove on one side of the front and rear side walls of the inner cavity opposite to each other, and the slide plate (304) has a slider fixed at the bottom of both the front and back sides. The slider moves linearly up and down in the inner cavity of the slide groove, and eccentric wheels are fixed at both left and right ends of the outer surface of the rotating rod (306).

6. The optometry instrument for visual examination according to claim 1, characterized in that: The horizontal adjustment mechanism (4) comprises a threaded rod (401) rotatably connected between opposite sides of the left and right side walls of the inner cavity of the base (1) through a bearing, the left side of the threaded rod (401) passes through the base (1) and extends to the left side of the base (1) and is fixed with a handle, the outer surface of the threaded rod (401) is threadedly connected with two screw sleeves (402), the upper surface of the screw sleeve (402) is fixed with a linkage rod (403), the upper surface of the linkage rod (403) passes through the base (1) and extends to the upper side of the base (1) and is fixed to the lower surface of the mounting seat (302).

7. The optometry instrument for visual examination according to claim 6, characterized in that: A sliding strip is fixed to the inner bottom wall of the base (1), and a sliding rod is fixed to the lower surface of the screw sleeve (402), and the sliding rod performs horizontal linear motion in the inner cavity of the sliding strip.

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