CN109864698B

CN109864698B - Portable vision tester

Info

Publication number: CN109864698B
Application number: CN201910271563.7A
Authority: CN
Inventors: 王科; 李梦梦; 陈炳全; 董星池; 马钦龙
Original assignee: Henan Normal University
Current assignee: Henan Normal University
Priority date: 2019-04-04
Filing date: 2019-04-04
Publication date: 2021-06-08
Anticipated expiration: 2039-04-04
Also published as: CN109864698A

Abstract

The invention discloses a portable vision tester, comprising an ocular lens, a lens disk, a word disk, a decompression ball and a whistle, wherein medical staff opens the vision tester, the lens in the lens disk is aligned with a lens barrel through a first motor box, and opens an electric lamp, the vision tester observes the orientation of letters on the word disk through the ocular lens, when the vision tester clearly sees the letters backwards, the decompression ball correspondingly placed upwards is pressed, air in an air bag on the decompression ball is extruded out, the extruded air enables the whistle in the decompression ball to make a sound, the existing vision test is that a vision chart is hung on a wall to distinguish the direction of E in the vision chart, but the detection method can lead the vision tester (particularly middle and primary school students) to feel pressure, the test process is not interesting, meanwhile, the light environment can influence the detection result, the measured vision is inaccurate, and the invention leads the test result to be more accurate, the medical personnel can carry conveniently, and the detection result is more accurate.

Description

Portable vision tester

Technical Field

The invention relates to vision test equipment, in particular to a portable vision tester.

Background

The visual chart is hung on a wall when the eyesight is tested at present, an eyesight tester stands to a distance of about 5 meters from the eyesight chart, one eye is shielded, the direction of an E character in the eyesight chart is distinguished, then the specific condition of the eyesight tester is obtained, however, in the actual test, the distance of 5 meters is more or less deviated, and the influence of ambient light at different moments is added, the eyesight of the eyesight tester is inaccurate, the eyesight chart is inconvenient to carry and needs to be hung on a flat wall surface, meanwhile, the test process is dull for many people, many people often carry out the eyesight test at the same time, doctors do not have patience to confirm the eyesight of the eyesight tester, when the eyesight test is carried out, the attention of the people is mainly focused on the direction of seeing clearly letters, the condition that the direction of fingers is inconsistent with the seeing direction can occur, and the natural direction sense of the people is not strong, the test result may be inaccurate due to wrong direction, and when children perform vision test, they may not cooperate with the doctor's test because they are not interested in the test, which may more easily result in the inaccuracy of the vision test result, so it is necessary to design a portable vision tester.

Disclosure of Invention

The invention aims to provide a portable vision tester to solve the problems in the background art.

In order to solve the above problems, the present invention provides a technical solution: a portable vision tester comprises a device body, wherein a base is arranged at the lower part of the device body, an air inlet valve is arranged at the left end of the base and is connected with an air tank in the base through a pipeline, a fixing plate is arranged at the left side of the upper side of the base, a pressure reducing ball is arranged at the left side of the fixing plate and is arranged on the fixing plate through a fixing pipe, a gas distributing valve is arranged in the fixing plate and is connected with the gas distributing valve through a pipeline, the lower side of the gas distributing valve is connected with the air tank through a pipeline, a silica gel layer is arranged at the outer side of the pressure reducing ball, an air bag is arranged below the silica gel layer and is connected with a ring pipe through a pipeline, a safety valve is arranged on the pipeline connected with the ring pipe, a backing plate is arranged at the inner side of the air bag, a fourth supporting rod is fixed at the middle part of the backing plate, one side, far away from, the other side of the air release pipe is connected with the air distribution valve through a pipeline, whistle is symmetrically arranged on the inner side of the annular pipe and is respectively connected with the contraction pipe, a baffle is arranged in the middle of the contraction pipe which is symmetrically arranged, the contraction pipe is connected with the annular pipe through a pipeline, and a second electric valve is arranged on the pipeline which is connected with the annular pipe.

Preferably, the base upside is provided with first bracing piece on the fixed plate right side, first bracing piece upper end sets up the lens cone, the lens cone left end sets up the eyepiece, first bracing piece right side sets up first motor case, the connecting rod on first motor case right side fixes the lens dish, set up the second bracing piece on the base on lens dish right side, second bracing piece right side sets up the second motor case, the letter mother dish is fixed to the connecting rod on second motor case right side, the base upside on second bracing piece right side sets up the third bracing piece, the fixed electric lamp in third bracing piece top, the fixed sliding tray of the left connecting rod of third bracing piece, the base right-hand member sets up the handle through the fixed plate.

Preferably, the gear is arranged in the middle of the letter mother board, the gear ring is meshed with the outer side of the gear, a plurality of letter mother boards are uniformly arranged on the letter mother board on one side, away from the gear, of the gear ring, the letters in the letter mother boards face the random arrangement, and the feeler levers are fixed on the letter mother boards facing the letters.

Preferably, a plurality of fixing grooves are formed in the sliding groove disc, and pressure sensors are arranged in the fixing grooves.

Preferably, a gasket is arranged at the left end of the probe rod.

Preferably, the silica gel layer is made of bionic human silica gel.

The invention has the beneficial effects that:

the invention replaces the traditional testing method by arranging the lens and the letter mother board, and simultaneously, the electric lamp is arranged to keep the testing environment stable, so that the testing result is more accurate, and meanwhile, the pressure reducing ball in which direction is pressed by the letter in which direction is seen by people, so that the problem of wrong direction in the traditional mode is not easy to occur.

Drawings

FIG. 1 is a general block diagram of the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is a view of the structure of the pressure reducing ball of the present invention;

FIG. 4 is an enlarged view at B in FIG. 3;

FIG. 5 is a block diagram of the stamper of the present invention;

FIG. 6 is a chute and pan structure diagram of the present invention;

fig. 7 is a structural view of the probe of the present invention.

Reference numerals in the figures

1. A device body; 2. an eyepiece; 3. a first support bar; 4. a first motor case; 5. a lens barrel; 6. a lens disc; 7. a base; 8. a second support bar; 9. a second motor case; 10. an electric lamp; 11. a character master; 13. A handle; 12. a chute disc; 14. an intake valve; 15. a gas tank; 16. a pressure reducing ball; 17. a gas distributing valve; 18. a fixing plate; 19. discharging the air pipe; 20. a first electrically operated valve; 21. an air bag; 22. a safety valve; 23. a fourth support bar; 24. an annular tube; 25. a whistle; 26. a shrink tube; 27. a baffle plate; 28. a second electrically operated valve; 29. a fifth support bar; 30. a base plate; 31. a silica gel layer; 32. A third support bar; 33. a letter mother board; 34. a ring gear; 35. a gear; 36. a probe rod; 37. fixing grooves; 38. a pressure sensor; 39. and (7) a gasket.

Detailed Description

The invention will be described in detail with reference to the accompanying drawings, as shown in fig. 1-7, a portable vision tester comprises a device body 1, a base 7 is arranged at the lower part of the device body 1, an air inlet valve 14 is arranged at the left end of the base 7, the air inlet valve 14 is connected with an air tank 15 in the base 7 through a pipeline, a fixing plate 18 is arranged at the left side of the upper side of the base 7, a pressure reducing ball 16 is arranged at the left side of the fixing plate 18, the pressure reducing balls 16 are arranged on the fixing plate 18 through fixing rods, four pressure reducing balls 16 are arranged at the upper part, the lower part of the fixing plate 18 is provided with an air distributing valve 17, the pressure reducing balls 16 are connected with the air tank 15 through pipelines, a silica gel layer 31 is arranged at the outer side of the pressure reducing ball 16, the silica gel layer 31 is made of bionic human silica gel material, an air bag 21 is arranged below the silica gel layer 31, the, the inboard backing plate 30 that sets up of gasbag 21, the fixed fourth bracing piece 23 in backing plate 30 middle part, backing plate 30 supports 16 outer walls of decompression ball, backing plate 30 one side is kept away from to fourth bracing piece 23 and is fixed on ring pipe 24, ring pipe 24 keeps away from fourth bracing piece 23 one side and sets up gas release pipe 19, gas release pipe 19 is connected with ring pipe 24 through the pipeline, set up first motorised valve 20 on the pipeline that gas release pipe 19 and ring pipe 24 are connected, gas release pipe 19 opposite side passes through the pipeline and is connected with air distributing valve 17, ring pipe 24 keeps away from fourth bracing piece 23 one side symmetry and sets up whistle 25, whistle 25 is connected with shrink tube 26 respectively, the shrink tube 26 middle part that two symmetries set up is provided with baffle 27, shrink tube 26 passes through the pipeline and is connected with ring pipe 24, be provided with second motorised valve 28 on the pipeline that shrink tube 26 and.

A first supporting rod 3 is arranged on the right side of a fixing plate 18 on the upper side of a base 7, a lens barrel 5 is arranged at the upper end of the first supporting rod 3, an ocular lens 2 is arranged at the left end of the lens barrel 5, a first motor box 4 is arranged on the right side of the first supporting rod 3, a connecting rod on the right side of the first motor box 4 fixes a lens disc 6, lenses with different magnifications are mounted on the lens disc 6, a second supporting rod 8 is arranged on the base 7 on the right side of the lens disc 6, a second motor box 9 is arranged on the right side of the second supporting rod 8, a character master disc 11 is fixed on the connecting rod on the right side of the second motor box 9, a gear 35 is arranged in the middle of the character master disc 11, a gear ring 34 is meshed outside the gear 35, eight character masters 33 are uniformly arranged on the character master disc 11 on the side of the gear ring 34 far away from the gear 35, the characters in the character masters 33 are randomly arranged, a probe, the electric lamp 10 is fixed at the top end of the third support rod 32, the sliding chute disc 12 is fixed by the connecting rod on the left side of the third support rod 32, three fixing grooves 37 are formed in the sliding chute disc 12, a pressure sensor 38 is arranged in each fixing groove 37, and the handle 13 is arranged at the right end of the base 7 through the fixing plate.

The device body 1 is brought to a place for detecting vision through the handle 13, a medical staff aims at a lens barrel 5 through controlling the first motor box 4 to align a proper lens in the lens disk 6, meanwhile, the second motor box 9 moves the letter master plate 33 on the letter master plate 11 to the pressure sensor 38 on the chute disk 12, the E-shaped orientation position on the letter master plate 33 is provided with the probe rod 36, the gasket 39 on the probe rod 36 presses the pressure sensor 38, the pressure sensor 38 is subjected to continuous pressure, the second electric valve 28 in the pressure reducing ball 16 in the corresponding direction is opened through the controller, the vision tester observes the orientation of the E-shaped orientation on the letter master plate 33 through the eyepiece 2, the vision tester clearly extrudes the air bag 21 on the corresponding pressure reducing ball 16 after seeing the E-shaped orientation, the air in the air bag 21 is extruded to enter the annular tube 24 through the safety valve 22, the air enters the shrinkage tube 26 through the opened second electric valve 28, and the air entering the shrinkage tube 26 is accelerated through, the flow is to the whistle 25, make the whistle 25 sound, namely represent and observe correctly, can lighten oneself pressure by squeezing the gasbag 21 vision tester, the second motorised valve 28 closes after the vision tester squeezes the gasbag 21, open the first motorised valve 20 and inflate gasbag 21 through the relief valve 22, the medical personnel makes the letter master 11 rotate through controlling the second motor case 9, adjust to different letter master 33, the second motorised valve 28 in the decompression ball 16 of corresponding direction opens, the vision tester presses the gasbag 21 on the decompression ball 16 again, when the letter that the same lens shows, the vision tester chooses correct decompression ball 16 totally, the medical personnel adjust the lens disk 6 to make the letter smaller, carry on next group of tests, when the vision tester can't choose the decompression ball 16 correctly, the medical personnel adjust the lens disk 6 to make the letter bigger, test, finally confirm the vision condition of the vision tester through many tests, the invention replaces the traditional visual chart with the lens disk 6 and the letter disc 11, the electric lamp 10 is arranged to ensure that the display effect of the letter disc 33 on the letter disc 11 is not influenced by the environment, the traditional direction is replaced by pressing the pressure reducing ball 16, so that the visual tester is not easy to have the situation that the visual tester mainly focuses on the direction of seeing the letters clearly, but the direction of pointing the letters is wrong, the direction of someone is not strong, the direction of the letters is not consistent with the direction pointed by the visual tester or the direction, and the pressure reducing ball 16 is pressed in which direction, thereby avoiding the situation that the test is inaccurate due to the personal reason, the device body 1 can be moved by the handle 13, the visual tester can relax and reduce the pressure during the test by arranging the pressure reducing ball 16, the whistle 25 in the pressure reducing ball 16 makes a sound, so that the test process is more interesting, especially children can attract the attention of the children, let them cooperate with the visual examination.

The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.

Claims

1. A portable vision tester comprises a device body and is characterized in that a base is arranged on the lower portion of the device body, a fixing plate is arranged on the left side of the upper side of the base, a first supporting rod is arranged on the right side of the fixing plate on the upper side of the base, a lens barrel is arranged at the upper end of the first supporting rod, an eyepiece is arranged at the left end of the lens barrel, a first motor box is arranged on the right side of the first supporting rod, a lens disc is fixed on a connecting rod on the right side of the first motor box, a second supporting rod is arranged on the base on the right side of the lens disc, a character master disc is fixed on the connecting rod on the right side of the second motor box, a gear is arranged in the middle of the character master disc, the gear is meshed with a gear ring outside, a plurality of character master discs are uniformly arranged on the character master disc on one side of the gear ring far away from the gear, the electric lamp is fixed at the top end of the third supporting rod, the connecting rod at the left side of the third supporting rod is fixed with a chute disc, a plurality of fixing grooves are arranged on the chute disc, pressure sensors are arranged in the fixing grooves, a handle is arranged at the right end of the base through a fixing plate, an air inlet valve is arranged at the left end of the base and is connected with an air tank in the base through a pipeline, a pressure reducing ball is arranged at the left side of the fixing plate and is arranged on the fixing plate through a fixing pipe, a gas distributing valve is arranged in the fixing plate and is connected with the gas distributing valve through a pipeline, the lower side of the gas distributing valve is connected with the air tank through a pipeline, a silica gel layer is arranged outside the pressure reducing ball, an air bag is arranged below the silica gel layer and is connected with a ring pipe through a pipeline, a safety valve is arranged on the pipeline for connecting the air, the deflating pipe is connected with the annular pipe through a pipeline, a first electric valve is arranged on the pipeline connected with the annular pipe, the other side of the deflating pipe is connected with the gas distributing valve through a pipeline, whistle is symmetrically arranged on the inner side of the annular pipe and is respectively connected with the contraction pipe, a baffle is arranged in the middle of the contraction pipe which is symmetrically arranged, the contraction pipe is connected with the annular pipe through a pipeline, and a second electric valve is arranged on the pipeline connected with the annular pipe.

2. The portable vision tester as recited in claim 1, wherein the silica gel layer is made of a bionic human silica gel material.