Auxiliary vision testing device convenient to adjust

Abstract

The auxiliary vision testing device convenient to adjust comprises a base, a moving rod is arranged on one side of the upper end of the base, a first screw rod is rotationally connected to one end of the upper side of the base, a fixing plate is fixedly connected to one side of the moving rod, a first sliding groove is formed in one end of the fixing plate, and a second sliding groove is formed in the other end of the fixing plate. A supporting rod is slidably connected to one end of the first sliding groove, a shade is arranged above the supporting rod, a fixing rod is fixedly connected to one end of the fixing plate, a visual chart box is fixedly connected to the top end of the fixing rod, and a graduated scale is fixedly connected to the upper side of the fixing plate. According to the utility model, the movable rod, the first screw rod, the fixed plate, the support rod, the fixed block, the second chute, the shade, the graduated scale, the visual chart box, the first chute, the second screw rod, the universal wheels and the push handle are arranged, so that the sight line of a subject can be kept flush with the 1.0 line shown in the visual chart box according to the height of the subject, the test error is reduced, and the use is convenient and flexible.

Description

Technical Field

[0001] The utility model relates to the technical field of an auxiliary vision testing device that is easy to adjust, and in particular to an auxiliary vision testing device that is easy to adjust. Background Art

[0002] Vision test is one of the important methods of clinical ophthalmic examination. It is a test of the subject's vision ability and level conducted by ophthalmologists, optometrists and orthoptists. Vision refers to the ability of the retina to distinguish images. The quality of vision is determined by the size of the retina's ability to distinguish images. Generally, the 1.0 line of the eye chart is at the same height as the subject's eyes. Both eyes are checked separately, usually right first and then left (uncorrected vision is checked first, then corrected vision is checked). When checking one eye, the other eye must be completely covered with an eye patch.

[0003] A Chinese patent with patent publication number CN215738863U discloses an ophthalmic vision examination device, comprising a first support plate, a second support plate, a bottom plate, and a base. The first support plate is fixed to one side of the bottom plate, and the second support plate is fixed to the other side of the bottom plate. A first slide bar is provided on the inner side of the first support plate, and a second slide bar is provided on the inner side of the second support plate. Both ends of the first slide bar are fixed to the first support plate, and both ends of the second slide bar are fixed to the second support plate. Slide sleeves are provided on the first slide bar and the second slide bar, and a fixed plate is fixed between the two slide sleeves. A connecting plate is connected between the bottoms of the first and second support plates, a threaded hole is provided in the middle of the connecting plate, and a turning handle is provided in the middle of the bottom of the connecting plate. A screw rod is vertically connected to the top of the turning handle, and the top of the screw rod passes through the threaded hole. The top of the screw rod is rotatably connected to the bottom of the fixed plate through a first bearing seat. Beneficial effect: The height of the fixed plate can be adjusted, which is convenient for people of different heights to perform vision examinations. It is simple and practical.

[0004] Existing auxiliary vision testing devices have the problem of being difficult to adjust the height of the eye chart according to the height of the subject to keep the subject's line of sight aligned with the 1.0 line shown in the eye chart box. In order to overcome these disadvantages, the present invention provides an auxiliary vision testing device that is easy to adjust. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to provide an auxiliary vision testing device that is easy to adjust.

[0006] The top of the fixing plate is fixedly mounted on the fixing plate, and the fixing plate is connected to the fixing plate by a threaded connection to the fixing plate.

[0007] Furthermore, the top end of the first screw is fixedly connected to a turning handle, one end of the upper side of the base is fixedly connected to a limiting rod, one end of the moving rod is slidably connected to the limiting rod, and the top end of the limiting rod is fixedly connected to a limiting block.

[0008] Furthermore, a knob is rotatably connected to one side of the fixing plate at a position corresponding to the second screw rod, and one end of the second screw rod passes through the side wall of the fixing plate and is fixedly connected to the knob.

[0009] Furthermore, a guide rod is fixedly connected in the second sliding groove, and the bottom end of the connecting rod is slidably connected to the guide rod.

[0010] Furthermore, handles are fixedly connected to both sides of the lower end of the connecting rod.

[0011] Furthermore, universal wheels are fixedly connected to the four corners of the bottom of the base, and a push handle is fixedly connected to one side of the base.

[0012] Beneficial effects of the utility model:

[0013] When in use, the utility model, an auxiliary vision testing device that is easy to adjust, has the following advantages:

[0014] 1. In this solution, a base, a movable rod, a first screw, a turning handle, a limiting rod, a limiting block, a fixed plate, a support rod, a fixed block, a second slide, a guide rod, a connecting rod, a mask, a grip, a fixed rod, and a vision chart box are provided. The subject stands in front of the support rod and turns the turning handle, thereby driving the first screw to rotate, and then driving the movable rod to move up and down, and then driving the fixed plate, the support rod, the mask, the fixed rod, and the vision chart box to rise or fall synchronously as a whole, and until the mask reaches the height of the subject's eyes, the mask covers the outside of the eyes, so that the height of the vision chart box and the mask can be adjusted simultaneously according to the subject's height, keeping the subject's line of sight aligned with the 1.0 line shown in the vision chart box, reducing test errors, and then moving the connecting rod and the mask laterally along the second slide, so that the mask can cover the subject's left and right eyes in rotation according to test needs.

[0015] 2. In this solution, a first slide groove, a second screw, a knob, a support rod, and a scale are provided. By rotating the knob, the second screw is driven to rotate, and then the support rod is driven to slide back and forth along the first slide groove. The distance between the mask and the vision chart box can be adjusted according to the needs of the vision test. The scale assists in measuring the distance. By providing universal wheels and a push handle, the auxiliary vision test device can be moved at will. It is convenient and flexible to use, and the utilization rate is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the description of the specific implementation methods. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 : Schematic diagram of the overall structure of the utility model;

[0018] Figure 2 : A side view of the utility model;

[0019] Figure 3 : Another perspective structural diagram of the utility model;

[0020] Figure 4 :The utility model Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 : A front view of the utility model.

[0022] The reference numerals are as follows:

[0023] 1. Base; 2. Moving rod; 3. First screw; 4. Turning handle; 5. Limiting rod; 6. Limiting block; 7. Fixed plate; 8. First slide; 9. Second screw; 10. Turning knob; 11. Support rod; 12. Fixed block; 13. Second slide; 14. Guide rod; 15. Connecting rod; 16. Cover; 17. Grip; 18. Scale; 19. Fixed rod; 20. Eye chart box; 21. Universal wheel; 22. Push handle. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figure 1-5 As shown, it relates to an auxiliary vision testing device that is easy to adjust, including a base 1, a moving rod 2 is provided on one side of the upper end of the base 1, a first screw 3 is rotatably connected to one end of the upper side of the base 1, one end of the first screw 3 is threadedly connected to the moving rod 2, a fixed plate 7 is fixedly connected to one side of the moving rod 2, a first slide groove 8 is provided at one end of the fixed plate 7, a support rod 11 is slidably connected to one end of the first slide groove 8, the support rod 11 is an L-shaped structure, a second screw 9 is rotatably connected in the first slide groove 8, one end of the second screw 9 is threadedly connected to the support rod 11, and the support rod A fixed block 12 is fixedly connected to the top of one end of 11, a second slide groove 13 is opened on the upper side of the fixed block 12, one end of the second slide groove 13 is slidably connected to a connecting rod 15, the top of the connecting rod 15 is fixedly connected to a mask 16, one end of the fixed plate 7 is fixedly connected to a fixing rod 19, the fixing rod 19 is an L-shaped structure, the top of the fixing rod 19 is fixedly connected to a vision chart box 20, the upper side of the fixed plate 7 is fixedly connected to a scale 18, the head end of the scale 18 is placed on the fixed rod 19, and the height of the mask 16 is flush with the 1.0 line shown in the vision chart box 20.

[0026] like Figure 1-5 As shown, the top of the first screw 3 is fixedly connected with a turning handle 4, one end of the upper side of the base 1 is fixedly connected to the limiting rod 5, one end of the moving rod 2 is slidably connected to the limiting rod 5, and the top of the limiting rod 5 is fixedly connected to the limiting block 6. The turning handle 4 is rotated to drive the first screw 3 to rotate, and then drive the moving rod 2 to move up and down along the limiting rod 5, and then drive the fixed plate 7, support rod 11, mask 16, fixed rod 19, and eye chart box 20 to rise or fall synchronously as a whole, keeping the mask 16 flush with the 1.0 line shown in the eye chart box 20, and until the mask 16 reaches the height of the subject's eyes, it is convenient to adjust the height of the eye chart box 20 and the mask 16 at the same time according to the subject's height.

[0027] like Figure 1-5 As shown, one side of the fixed plate 7 is located at a position corresponding to the second screw 9 and is rotatably connected to a knob 10. One end of the second screw 9 passes through the side wall of the fixed plate 7 and is fixedly connected to the knob 10. The knob 10 is rotated to drive the second screw 9 to rotate, and then drive the support rod 11 to slide back and forth along the first slide groove 8. The distance between the mask 16 and the vision chart box 20 can be adjusted according to the needs of the vision test, and the scale 18 assists in the distance measurement.

[0028] like Figure 1-5 As shown, a guide rod 14 is fixedly connected to the second slide groove 13, and the bottom end of the connecting rod 15 is slidably connected to the guide rod 14. The connecting rod 15 and the mask 16 are moved laterally along the second slide groove 13. The mask 16 can cover the left and right eyes of the subject in rotation according to the test needs. Handles 17 are fixedly connected to both sides of the lower end of the connecting rod 15 for easy handholding, keeping the mask 16 in front of the eyes to prevent sliding.

[0029] like Figure 1-5 As shown, universal wheels 21 are fixedly connected to the four corners of the bottom of the base 1, and a push handle 22 is fixedly connected to one side of the base 1, so that the auxiliary vision testing device can be moved at will, which is convenient and flexible to use and improves utilization.

[0030] Working principle: When in use, the subject stands in front of the support rod 11 and turns the handle 4, thereby driving the first screw 3 to rotate, and then driving the movable rod 2 to move up and down along the limit rod 5, thereby driving the fixed plate 7, the support rod 11, the mask 16, the fixed rod 19, and the vision chart box 20 to rise or fall synchronously as a whole, keeping the mask 16 flush with the 1.0 line shown in the vision chart box 20, and until the mask 16 reaches the height of the subject's eyes, the mask 16 covers the outside of the eyes, which is convenient for adjusting the height of the vision chart box 20 and the mask 16 at the same time according to the subject's height, and then the connecting rod 15 and the mask 16 are moved horizontally along the second slide 13, and the mask 16 can be rotated to cover the subject's left and right eyes according to the test needs, and the knob 10 is turned to drive the second screw 9 to rotate, thereby driving the support rod 11 to slide back and forth along the first slide 8, and the distance between the mask 16 and the vision chart box 20 can be adjusted according to the needs of the vision test, and the scale 18 assists in the distance measurement.

[0031] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, numerous modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An adjustable auxiliary vision testing device, comprising a base (1), characterized in that: A moving rod (2) is provided on one side of the upper end of the base (1), and a first screw rod (3) is rotatably connected to one end of the upper side of the base (1), and one end of the first screw rod (3) is threadedly connected to the moving rod (2). A fixed plate (7) is fixedly connected to one side of the moving rod (2), and a first sliding groove (8) is provided at one end of the fixed plate (7). One end of the first sliding groove (8) is slidably connected to a support rod (11), and a second screw rod (9) is rotatably connected in the first sliding groove (8), and one end of the second screw rod (9) is threadedly connected to the support rod ( 11) threaded connection, one end of the support rod (11) is fixedly connected to a fixed block (12), the upper side of the fixed block (12) is provided with a second slide groove (13), one end of the second slide groove (13) is slidably connected to a connecting rod (15), the top of the connecting rod (15) is fixedly connected to a mask (16), one end of the fixed plate (7) is fixedly connected to a fixed rod (19), the top of the fixed rod (19) is fixedly connected to a vision chart box (20), and the upper side of the fixed plate (7) is fixedly connected to a scale (18).

2. The adjustable auxiliary vision testing device according to claim 1, characterized in that: The top end of the first screw rod (3) is fixedly connected to a turning handle (4), one end of the upper side of the base (1) is fixedly connected to a limiting rod (5), one end of the moving rod (2) is slidably connected to the limiting rod (5), and the top end of the limiting rod (5) is fixedly connected to a limiting block (6).

3. The adjustable auxiliary vision testing device according to claim 1, characterized in that: One side of the fixing plate (7) is rotatably connected to a knob (10) at a position corresponding to the second screw rod (9), and one end of the second screw rod (9) penetrates the side wall of the fixing plate (7) and is fixedly connected to the knob (10).

4. The adjustable auxiliary vision testing device according to claim 1, characterized in that: A guide rod (14) is fixedly connected in the second sliding groove (13), and the bottom end of the connecting rod (15) is slidably connected to the guide rod (14).

5. The adjustable auxiliary vision testing device according to claim 1, characterized in that: Both sides of the lower end of the connecting rod (15) are fixedly connected with handles (17).

6. The adjustable auxiliary vision testing device according to claim 1, characterized in that: Universal wheels (21) are fixedly connected to the four corners of the bottom of the base (1), and a push handle (22) is fixedly connected to one side of the base (1).

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