CN215777996U

CN215777996U - Ophthalmic visual acuity test chart of reciting prevention

Info

Publication number: CN215777996U
Application number: CN202120445831.5U
Authority: CN
Inventors: 任敏玮; 孙廷励; 任珊; 沈念; 刘卓; 李伟; 马师强; 秦贤杰
Original assignee: Liuzhou Peoples Hospital
Current assignee: Liuzhou Peoples Hospital
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2022-02-11
Anticipated expiration: 2031-02-24

Abstract

The utility model discloses an eyesight test chart for preventing reciting in ophthalmology, which comprises a test chart body and a base, wherein an adjusting switch is fixedly arranged on the outer surface of one side of the test chart body, a control switch is fixedly arranged on the lower side of the adjusting switch, and a transparent glass plate is fixedly connected to the outer surface of one side of the test chart body. The accuracy of the detection result is improved.

Description

Ophthalmic visual acuity test chart of reciting prevention

Technical Field

The utility model belongs to the technical field of vision tests, and particularly relates to an anti-recitation visual acuity chart for ophthalmology.

Background

The eye chart is a chart for measuring vision. The domestic visual chart comprises: international standard visual acuity chart, visual acuity chart logarithmic visual acuity chart and the like. The visual acuity chart and the distance visual acuity chart are functionally classified. The visual acuity chart is based on the principle of viewing angle. The inspection of vision is generally divided into far vision and near vision, and the far vision mostly adopts an international standard visual chart which is composed of E characters with different openings and different directions. The visual chart for medical detection mainly detects central vision, namely, detects foveal acuity in a macular area of retina, so that the preliminary condition of visual function can be simply and quickly known, and the visual chart has important significance for clinical diagnosis and treatment of eye diseases. The existing visual chart has the following defects:

1. the existing visual acuity test chart is mostly a fixed visual acuity test chart with the same standard, and when the visual acuity test chart is detected, detected personnel recite the content of the visual acuity test chart in advance easily, so that the detection result is inaccurate.

2. The existing visual acuity chart is mostly fixed on a wall, is inconvenient to move, cannot be adjusted according to the specific conditions of a user, and is poor in applicability.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to overcome the existing defects and provide an ophthalmologic recitation-proof visual acuity chart so as to solve the problems of inaccurate detection result and poor applicability in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: an anti-recitation visual acuity test chart for ophthalmology comprises a test chart body and a base, wherein an adjusting switch is fixedly arranged on the outer surface of one side of the test chart body, a control switch is fixedly arranged on the lower side of the adjusting switch, a transparent glass plate is fixedly connected to the outer surface of one side of the test chart body, and a plurality of LED lamps are fixedly connected to the top inside the test chart body; a baffle is fixedly arranged inside the checking meter body and parallel to the transparent glass plate, a plurality of checking windows are formed in the surface of the baffle at intervals in the vertical direction, a first motor is fixedly connected to the top inside the checking meter body, the output end of the first motor faces downwards vertically and is fixedly connected with a rotating shaft, and a plurality of first gears are fixedly connected to the surface of the rotating shaft at intervals; the inspection watch comprises an inspection watch body, and is characterized in that a plurality of fixed cylinders are fixedly connected inside the inspection watch body, the cross sections of the fixed cylinders are in a flat ring shape, a connecting belt is rotationally clamped and connected between every two adjacent fixed cylinders, a direction letter printing belt is fixedly connected to one side of the connecting belt, an active belt is fixedly connected to the other side of the connecting belt, and the upper end and the lower end of the direction letter printing belt and the upper end and the lower end of the active belt are both protruded out of the upper end and the lower end of the connecting belt; the surface of one side of the driving belt is fixedly connected with a plurality of teeth, and the first gear is in meshed connection with the teeth on the surface of the driving belt; the direction letter printing belt and the inspection window are correspondingly arranged; the LED lamp and the first motor are electrically connected with the control switch, and the adjusting switch is electrically connected with the first motor; the surface of the bottom outside the checking meter body is fixedly connected with an electric lifting rod, and the lower end of the electric lifting rod is fixedly connected with a base.

Preferably, the surface of the bottom of the base is internally provided with a plurality of roller grooves, and the groove walls on two sides of each roller groove are fixedly provided with gear grooves; a sliding block is connected in the roller groove in a sliding mode, the surface of the bottom of the sliding block is connected with a roller in a rotating mode, motor grooves are fixedly formed in the surfaces of the two sides of the sliding block, a second motor is fixedly connected in each motor groove, and a second gear is fixedly connected to the output end of each second motor; and the side wall of one side of the roller groove is in meshed connection with the second gear.

Preferably, the fixed cylinder at the top inside the watch body is fixedly connected with the inner wall at the top of the watch body, the fixed cylinder at the bottom inside the watch body is fixedly connected with the inner wall at the bottom of the watch body, and the surfaces of the two sides of the rest fixed cylinders are fixedly connected with the inner walls at the two sides of the watch body through connecting rods.

Preferably, direction letter printing belt surface printing has the not letter of equidirectional, each the direction letter size that direction letter printing belt surface printing was the same and the direction is different, each direction letter printing belt surface printing's direction letter diminishes by last direction letter size from bottom to top gradually.

Compared with the prior art, the utility model provides an anti-recitation visual acuity chart for ophthalmology, which has the following beneficial effects:

1. the utility model is provided with the first motor, the driving belt and the direction letter printing belt, when the sequence of the direction letters needs to be changed, the first motor is started to rotate through the adjusting switch, the first motor rotates to further drive the first gear to rotate, the first gear rotates to further drive the driving belt to rotate, the driving belt rotates to further drive the direction letter printing belt to rotate, and the direction letter printing belt rotates to further replace the direction of the direction letters appearing in the inspection window, so that the detection result is prevented from being influenced by the sequence of the direction letters recited by a detected person, and the accuracy of the detection result is improved.

2. The utility model is provided with the roller, the electric lifting rod, the second motor and the roller groove, the checking meter body is moved to a designated position through the roller, the second motor is firstly started to rotate through the control switch, the second motor rotates to further drive the second gear to rotate in the gear groove, the slide block is further driven to slide upwards in the roller groove, the roller is further driven to enter the roller groove, the lower surface of the base is further contacted with the ground to increase friction, the electric lifting rod is started to adjust the checking meter body to a proper position, then the checking personnel are checked, the movement is convenient, the stability is good, the adjustment can be carried out according to the specific condition of the checked personnel, and the applicability is strong.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model without limiting the utility model in which:

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a cross-sectional structure of the present invention;

FIG. 4 is a schematic cross-sectional view of the base according to the present invention;

in the figure: 1. inspecting the watch body; 2. an LED lamp; 3. an adjustment switch; 4. a control switch; 5. an electric lifting rod; 6. a base; 7. a roller; 8. checking the window; 9. a first motor; 10. a fixed cylinder; 11. a directional letter printing belt; 12. a connecting rod; 13. a rotating shaft; 14. a first gear; 15. a connecting belt; 16. teeth; 17. a drive belt; 18. a baffle plate; 19. a transparent glass plate; 20. a slider; 21. a roller groove; 22. a gear groove; 23. a second gear; 24. a motor slot; 25. a second motor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: an anti-recitation visual acuity test chart for ophthalmology comprises a test chart body 1 and a base 6, wherein an adjusting switch 3 is fixedly arranged on the outer surface of one side of the test chart body 1, a control switch 4 is fixedly arranged on the lower side of the adjusting switch 3, a transparent glass plate 19 is fixedly connected on the outer surface of one side of the test chart body 1, and a plurality of LED lamps 2 are fixedly connected to the top inside the test chart body 1; a baffle 18 is fixedly arranged in the checking meter body 1 in parallel with a transparent glass plate 19, a plurality of checking windows 8 are arranged on the surface of the baffle 18 at intervals in the vertical direction, the color of the baffle 18 is preferably white, a first motor 9 is fixedly connected to the top inside the checking meter body 1, the output end of the first motor 9 faces downwards vertically and is fixedly connected with a rotating shaft 13, and a plurality of first gears 14 are fixedly connected to the surface of the rotating shaft 13 at intervals; the inside fixedly connected with a plurality of fixed cylinder 10 of inspection table body 1, the cross section of fixed cylinder 10 is the oblate ring form, and its middle part is the rectangle, and both ends are the shape of circular arc. A connecting belt 15 is rotationally clamped and connected between two adjacent fixed cylinders 10, one side of the connecting belt 15 is fixedly connected with a direction letter printing belt 11, the other side of the connecting belt 15 is fixedly connected with a driving belt 17, and the upper end and the lower end of the direction letter printing belt 11 and the upper end and the lower end of the driving belt 17 are both protruded out of the upper end and the lower end of the connecting belt 15; a plurality of teeth 16 are fixedly connected to the surface of one side of the driving belt 17, and the first gear 14 is in meshing connection with the teeth 16 on the surface of the driving belt 17; the direction letter printing belt 11 and the inspection window 8 are correspondingly arranged; the LED lamp 2 and the first motor 9 are electrically connected with the control switch 4, and the adjusting switch 3 is electrically connected with the first motor 9; the outside bottom fixed surface of inspection list body 1 is connected with

electric lift

5, 5 lower extreme fixedly connected with bases 6 of electric lift, when the order of the letter of change direction, start first motor 9 through regulating switch 3 earlier and rotate, first motor 9 rotates and further drives first gear 14 and rotates, first gear 14 rotates and further drives initiative belt 17 and rotates, initiative belt 17 rotates and further drives direction letter printing belt 11 and rotates, direction letter printing belt 11 rotates the direction of further changing the direction letter that appears in inspection window 8, thereby prevent that the order that the letter of direction was read by the detection personnel from influencing the testing result, the accuracy of testing result has been improved.

In the utility model, preferably, the bottom surface of the base 6 is internally provided with a plurality of roller grooves 21, and the groove walls at two sides of the roller grooves 21 are fixedly provided with gear grooves 22; a sliding block 20 is connected in the roller groove 21 in a sliding manner, a roller 7 is connected on the bottom surface of the sliding block 20 in a rotating manner, motor grooves 24 are fixedly formed in the surfaces of two sides of the sliding block 20, a second motor 25 is fixedly connected in the motor grooves 24, and a second gear 23 is fixedly connected at the output end of the second motor 25; the meshing connection between one side lateral wall of gyro wheel groove 21 and second gear 23, remove checklist body 1 to the assigned position through gyro wheel 7, start second motor 25 through control switch 4 earlier and rotate, second motor 25 rotates and further drives second gear 23 at gear groove 22 internal rotation, further drive slider 20 upwards slides in gyro wheel groove 21, further drive gyro wheel 7 gets into in gyro wheel groove 21, further make 6 lower surfaces of base and ground contact increase friction, restart electric lift pole 5 and adjust checklist body 1 to suitable position, inspect the personnel of being detected again, convenient removal and stability are good, can adjust according to the particular case of the person of being detected, and the suitability is strong.

In the utility model, preferably, the fixed cylinder 10 at the top inside the watch body 1 is fixedly connected with the inner wall at the top of the watch body 1, the fixed cylinder 10 at the bottom inside the watch body 1 is fixedly connected with the inner wall at the bottom of the watch body 1, and the two side surfaces of the rest fixed cylinders 10 are fixedly connected with the inner walls at the two sides of the watch body 1 through the connecting rods 12.

In the present invention, it is preferable that the surface of the directional letter printing belt 11 is printed with letters in different directions, the size of the letters printed on the surface of each directional letter printing belt 11 is the same and the direction is different, and the size of the letters printed on the surface of each directional letter printing belt 11 is gradually reduced from top to bottom.

The working principle and the using process of the utility model are as follows: when the direction letter sequence is required to be changed, the first motor 9 is started to rotate through the adjusting switch 3, the first motor 9 rotates to further drive the first gear 14 to rotate, the first gear 14 rotates to further drive the driving belt 17 to rotate, the driving belt 17 rotates to further drive the direction letter printing belt 11 to rotate, and the direction letter printing belt 11 rotates to further change the direction letters appearing in the inspection window 8 Thereby prevent to be read by the detection personnel and recite the order of lower direction letter and influence the testing result, the accessible is opened LED lamp 2 and is carried out the light filling when light is darker.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an eyesight test table is recited in ophthalmic preventing, includes checklist body (1) and base (6), its characterized in that: an adjusting switch (3) is fixedly arranged on the outer surface of one side of the checking meter body (1), a control switch (4) is fixedly arranged on the lower side of the adjusting switch (3), a transparent glass plate (19) is fixedly connected on the outer surface of one side of the checking meter body (1), and a plurality of LED lamps (2) are fixedly connected to the top of the interior of the checking meter body (1); a baffle (18) is fixedly arranged inside the checking meter body (1) and in parallel with the transparent glass plate (19), a plurality of checking windows (8) are arranged on the surface of the baffle (18) at intervals in the vertical direction, a first motor (9) is fixedly connected to the top inside the checking meter body (1), the output end of the first motor (9) faces downwards vertically and is fixedly connected with a rotating shaft (13), and a plurality of first gears (14) are fixedly connected to the surface of the rotating shaft (13) at intervals; the inspection table comprises an inspection table body (1), wherein a plurality of fixed cylinders (10) are fixedly connected inside the inspection table body (1), the cross sections of the fixed cylinders (10) are in a flat ring shape, a connecting belt (15) is connected between every two adjacent fixed cylinders (10) in a rotating and clamping manner, a direction letter printing belt (11) is fixedly connected to one side of the connecting belt (15), an active belt (17) is fixedly connected to the other side of the connecting belt (15), and the upper end and the lower end of the direction letter printing belt (11) and the upper end and the lower end of the active belt (17) both protrude out of the upper end and the lower end of the connecting belt (15); a plurality of teeth (16) are fixedly connected to the surface of one side of the driving belt (17), and the first gear (14) is in meshing connection with the teeth (16) on the surface of the driving belt (17); the direction letter printing belt (11) and the inspection window (8) are correspondingly arranged; the LED lamp (2) and the first motor (9) are electrically connected with the control switch (4), and the adjusting switch (3) is electrically connected with the first motor (9); the surface of the bottom of the exterior of the inspection meter body (1) is fixedly connected with an electric lifting rod (5), and the lower end of the electric lifting rod (5) is fixedly connected with a base (6).

2. The ophthalmic recitation-resistant eye chart of claim 1 wherein: the bottom surface of the base (6) is internally provided with a plurality of roller grooves (21), and the groove walls on the two sides of the roller grooves (21) are fixedly provided with gear grooves (22); a sliding block (20) is connected in the roller groove (21) in a sliding mode, a roller (7) is connected to the surface of the bottom of the sliding block (20) in a rotating mode, motor grooves (24) are fixedly formed in the surfaces of the two sides of the sliding block (20), a second motor (25) is fixedly connected in the motor grooves (24), and a second gear (23) is fixedly connected to the output end of the second motor (25); and the side wall of one side of the roller groove (21) is in meshed connection with the second gear (23).

3. The ophthalmic recitation-resistant eye chart of claim 1 wherein: the fixed cylinder (10) at the top inside the inspection meter body (1) is fixedly connected with the inner wall of the top of the inspection meter body (1), the fixed cylinder (10) at the bottom inside the inspection meter body (1) is fixedly connected with the inner wall of the bottom of the inspection meter body (1), and the surfaces of the two sides of the fixed cylinder (10) and the inner walls of the two sides of the inspection meter body (1) are fixedly connected through a connecting rod (12).

4. The ophthalmic recitation-resistant eye chart of claim 1 wherein: the direction letter printing belt (11) surface printing has the letter of equidirectional not, each the direction letter size that direction letter printing belt (11) surface printing is the same and the direction is different, each the direction letter size that direction letter printing belt (11) surface printing diminishes by last direction letter size under to gradually.