Vision examination device

Abstract

The vision examination device comprises a bottom plate, a supporting plate, an inner groove and an inserting plate, a telescopic rod is fixedly connected to the center of the top end of the bottom plate, the top end of the telescopic rod is fixedly connected with the center of the bottom of the supporting plate, the inner groove is formed in the upper portion of the top end of the supporting plate, and a plurality of rotating openings of different sizes are formed in the upper portion of the side wall of the supporting plate in a penetrating mode; the rotating opening is communicated with the inner groove, the inner side of the rotating opening is movably connected with a display disc with the corresponding size, four grooves are formed in the edge of one side of the display disc in a circumferential array mode, a fixing block is fixedly connected to the portion, above the rotating opening, of the side wall of the supporting plate, and an elastic piece is fixedly connected to the bottom of the fixing block. A plurality of parallel inserting grooves are formed in the lower portion of the side wall of the supporting plate. According to the device, the directions of letters are changed by arranging the rotatable display disc and the customized square blocks capable of freely turning the directions, so that advanced recording of testers is avoided, and the testing effect of the device is improved.

Description

Technical Field

[0001] This application relates to the technical field of ophthalmic examinations, and specifically relates to a vision examination device. Background Art

[0002] Vision is a dynamic change ability affected by various factors, including lighting, environmental color, mental state, emotion, and concentration, etc. Therefore, at different times, places, and states, the measured vision results may vary. The reading of the vision chart is an important reference value and is used to preliminarily evaluate the vision state during ophthalmic vision examinations.

[0003] Patent No. CN 220275572 U discloses an ophthalmic examination vision chart, including movable casters, a limit component, a pull ring, a connecting rod, etc. The height of the vision chart can be adjusted by driving a motor, which is convenient for eye examinations and improves practicability; at the same time, the vision chart can be rotated to adjust the front and back sides of the vision chart, and the angles of the E letters on the front and back sides are different, effectively preventing the tester from recording the angles of the E letters, thus ensuring the accuracy of the test, and having great application value and promotion value.

[0004] However, in use, it has the following defects:

[0005] Although the angle of the vision chart is changed by rotation to reduce the recording by the tester, this is only an angle adjustment of the mirror image, which can only change the left - right direction and cannot change the up - down direction, resulting in a reduced difficulty during the test and possibly affecting the estimated range of vision. Utility Model Content

[0006] The purpose of this application is to provide a vision examination device, which solves the problem in the background art that although the angle of the vision chart is changed by rotation to reduce the recording by the tester, this is only an angle adjustment of the mirror image, which can only change the left - right direction and cannot change the up - down direction, resulting in a reduced difficulty during the test and possibly affecting the estimated range of vision.

[0007] To achieve the above object, the present application provides the following technical solution: A vision inspection device, including a bottom plate, a support plate, an inner groove and a plug board. The central part of the top end of the bottom plate is fixedly connected with a telescopic rod, the top end of the telescopic rod is fixedly connected with the central part of the bottom of the support plate. An inner groove is opened above the top end of the support plate, and a number of rotation openings of different sizes are penetrated through the upper side wall of the support plate. The rotation openings are communicated with the inner groove, and a display disc corresponding to the size is movably connected to the inner side of the rotation opening. Four grooves are arranged in a circumferential array on one side edge of the display disc, and a fixed block is fixedly connected to the side wall of the support plate above the rotation opening. An elastic piece is fixedly connected to the bottom of the fixed block. A number of parallel slots are opened in the lower side wall of the support plate, a plug board is inserted into the inner side of the slot, a chute is opened on the surface of the plug board, and a customized square block is slidably connected to the inner side of the chute.

[0008] In this technical solution, the height of the support plate can be adjusted by the telescopic rod to adapt to different testers. Through the rotation opening, the turntable, the groove, the elastic piece and the dial block, the angle can be freely adjusted. The letter E is engraved on the surface of the display disc, and four grooves are opened on the surface edge of the other side. Hold the dial block by hand to drive the display disc to rotate, so as to change the angle of the letter E. During the rotation process, the elastic piece slides out of one groove and then enters another groove, while maintaining stability, the angle of the letter E is freely changed, avoiding the tester's premature memory, improving the test efficiency. At the same time, through the slot, the plug board, the chute and the customized square block, the angle of the smaller letter E can be set. It is not convenient to set the display disc to rotate and change the angle for the smaller letter E below. At this time, a detachable plug board is set to adjust. Remove the plug board from the slot, then slide out the customized square block, change the direction and then slide it in again, then the angle of the letter E can be changed, and the quantity can be freely set, further improving the practicability and test efficiency of the device.

[0009] As an optional solution of the technical solution of the present application, a fixed plate is fixedly connected to the left edge of the top end of the plug board, and a fixing bolt is threadedly connected to the side wall of the fixed plate.

[0010] As an optional solution of the technical solution of the present application, the left end of the slot is communicated with the left side wall of the support plate, and a bolt hole is opened on the side wall of the support plate above the left end opening of the slot, and the bolt hole corresponds to the fixing bolt.

[0011] As an optional solution of the technical solution of the present application, the protruding part of the outer side wall of the display disc is located inside the inner groove.

[0012] As an optional solution of the technical solution of the present application, a dial block is fixedly connected to the surface of the display disc on one side of the groove.

[0013] As an alternative embodiment of the technical solution of the present application, a lighting lamp is fixedly installed at the upper edge of the front surface of the support plate.

[0014] Compared with the prior art, the beneficial effects of the present application are as follows:

[0015] 1. In the present application, through the rotation port, turntable, groove, elastic piece and dial block, the angle can be freely adjusted. The surface of the display plate is engraved with the letter E, and four grooves are provided at the edge of the other side surface. Hold the dial block by hand to drive the display plate to rotate, thereby changing the angle of the letter E. During the rotation process, the elastic piece slides out of one groove and then enters another groove. While maintaining stability, the angle of the letter E is freely changed, avoiding the premature memory of the tester and improving the test efficiency.

[0016] 2. In the present application, through the slot, plug board, sliding groove and customized block, the angle of the smaller letter E can be set. It is not convenient to set up a display plate to rotate and change the angle for the smaller letter E below. At this time, a detachable plug board is set to adjust. Remove the plug board from the slot, then slide out the customized block, change the direction and then slide it in again, and the angle of the letter E can be changed, and the quantity can be freely set, further improving the practicality and test efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, objects and advantages of the present application will become more apparent:

[0018] Figure 1 It is an overall view of a vision inspection device of the present application;

[0019] Figure 2 It is a schematic cross-sectional structure view of the support plate of a vision inspection device of the present application;

[0020] Figure 3 It is a schematic structure view of the plug board of a vision inspection device of the present application.

[0021] In the figure: 1, bottom plate; 2, telescopic rod; 3, support plate; 4, rotation port; 5, display plate; 501, dial block; 6, inner groove; 7, groove; 8, fixed block; 9, elastic piece; 10, slot; 11, bolt hole; 12, plug board; 13, fixing bolt; 131, fixing plate; 14, sliding groove; 15, customized block; 16, lighting lamp. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to make the technical means, creative features, achieving purposes and effects of the present utility model easy to understand, the following will be further described in conjunction with specific embodiments.

[0023] As Figure 1As shown in the figure, a vision inspection device includes a bottom plate 1, a support plate 3, an inner groove 6, and an insertion plate 12. A telescopic rod 2 is fixedly connected to the center of the top end of the bottom plate 1. The top end of the telescopic rod 2 is fixedly connected to the center of the bottom of the support plate 3. A lighting lamp 16 is fixedly installed at the upper edge of the front surface of the support plate 3. The telescopic rod 2 can freely adjust its height to adapt to different testers.

[0024] As Figure 1 shown, four grooves 7 are circumferentially arrayed at one side edge of the display disc 5. A fixing block 8 is fixedly connected to the side wall of the support plate 3 above the rotation port 4. An elastic piece 9 is fixedly connected to the bottom of the fixing block 8. A dial block 501 is fixedly connected to the surface of the display disc 5 on one side of the groove 7. The elastic piece 9 can slide into the groove 7, so as to ensure the limit of the display disc 5 in the up, down, left, and right directions and prevent it from rotating randomly.

[0025] As Figure 1 and Figure 2 shown, an inner groove 6 is opened above the top end of the support plate 3. A number of rotation ports 4 of different sizes are penetrated through the upper side wall of the support plate 3. The rotation ports 4 are communicated with the inner groove 6. A display disc 5 corresponding in size is movably connected to the inside of the rotation port 4. The protruding part of the outer side wall of the display disc 5 is located inside the inner groove 6, so that it will not fall out from the rotation port 4.

[0026] As Figure 1 and Figure 3 shown, a number of parallel slots 10 are opened in the lower side wall of the support plate 3. An insertion plate 12 is inserted into the inside of the slots 10. A chute 14 is opened on the surface of the insertion plate 12. A customized block 15 is slidably connected to the inside of the chute 14. The customized block 15 is a cube, so it can freely change its direction and then slide in, thereby changing the direction of the letter E.

[0027] As Figure 1 and Figure 3 shown, a fixing plate 131 is fixedly connected to the left edge of the top end of the insertion plate 12. A fixing bolt 13 is threadedly connected to the side wall of the fixing plate 131. The left end of the slot 10 is communicated with the left side wall of the support plate 3. A bolt hole 11 is opened in the side wall of the support plate 3 above the left end opening of the slot 10. The bolt hole 11 corresponds to the fixing bolt 13.

[0028] In actual use, the height of the support plate 3 can be adjusted through the telescopic rod 2 to accommodate testers of different heights. The surface of the display plate 5 is engraved with the letter E, and four grooves 7 are provided on the edge of the other side surface. Hold the dial 501 by hand to drive the display plate 5 to rotate, thereby changing the angle of the letter E. During the rotation process, the elastic piece 9 slides out of one groove 7 and then enters another groove 7. While maintaining stability, the angle of the letter E is freely changed, avoiding the premature memory of the tester and improving the test efficiency. It is not convenient to set up a display plate 5 to rotate and change the angle for the smaller letter E below. At this time, a detachable plug board 12 is set to adjust. Remove the plug board 12 from the slot 10, and then slide out the customized block 15. The surface of the customized block 15 is engraved with the letter E corresponding to the size of one line. Change the direction and then slide it in again to change the angle of the letter E, and the quantity can be freely set, further improving the practicality and test efficiency of the device.

Claims

1. A vision testing device, comprising a base plate (1), a support plate (3), an inner groove (6) and an insert plate (12), characterized in that: A telescopic rod (2) is fixedly connected to the center of the top of the bottom plate (1), the top of the telescopic rod (2) is fixedly connected to the center of the bottom of the support plate (3), an inner groove (6) is provided above the top of the support plate (3), and a plurality of rotating openings (4) of different sizes are provided through the top of the side wall of the support plate (3), the rotating openings (4) are connected to the inner groove (6), and a display plate (5) of corresponding size is movably connected to the inner side of the rotating opening (4), and one side edge of the display plate (5) is Four grooves (7) are provided in the circular array, and a fixed block (8) is fixedly connected to the side wall of the support plate (3) above the rotating mouth (4), and an elastic sheet (9) is fixedly connected to the bottom of the fixed block (8). A plurality of parallel slots (10) are provided below the side wall of the support plate (3), and a plug plate (12) is inserted into the inner side of the slot (10). A slide groove (14) is provided on the surface of the plug plate (12), and a customized block (15) is slidably connected to the inner side of the slide groove (14).

2. A vision testing device according to claim 1, characterized in that: A fixing plate (131) is fixedly connected to the left edge of the top end of the plug plate (12), and a fixing bolt (13) is threadedly connected to the side wall of the fixing plate (131).

3. A vision testing device according to claim 2, characterized in that: The left end of the slot (10) is connected to the left side wall of the support plate (3), and a bolt hole (11) is provided on the side wall of the support plate (3) above the left end opening of the slot (10), and the bolt hole (11) corresponds to the fixing bolt (13).

4. A vision testing device according to claim 1, characterized in that: The protrusion on the outer wall of the display plate (5) is located on the inner side of the inner groove (6).

5. A vision testing device according to claim 1, characterized in that: A shifting block (501) is fixedly connected to the surface of the display plate (5) on one side of the groove (7).

6. A vision testing device according to claim 1, characterized in that: A lighting lamp (16) is fixedly mounted on the upper edge of the front surface of the support plate (3).

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