CN112353364B

CN112353364B - Physical examination is with preventing eyesight detector that cheats

Info

Publication number: CN112353364B
Application number: CN202011162505.XA
Authority: CN
Inventors: 周云霞; 马长坡; 张俊丽; 张凯翔
Original assignee: Tianjin Baodi Hospital
Current assignee: Tianjin Baodi Hospital
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2022-10-21
Anticipated expiration: 2040-10-27
Also published as: CN112353364A

Abstract

The utility model provides a physical examination is with preventing visual acuity detection appearance that cheats, the on-line screen storage device comprises a base, there are several telescopic links on the base, connect through rectangular case between the several telescopic link, connect through the fixed plate between the rectangular incasement wall, there is the rectangular board before the fixed plate, there is the pivot rectangular board front side, there is positive reverse motor opposite side before the rectangular board, there is the box body in the pivot, there is the screw in the box body, there is the second screw rod in the screw, there is the stripper plate on the second screw rod, rectangular case front side has the window, the sealed lid of right side window inner wall installation, the both sides inner wall of left side window has the standing groove, there is the frame in the left side window, the inner wall connection elasticity cloth of left side window, there is frame elevating gear in the standing groove. The height of rectangular case is adjusted through the telescopic link to this device to satisfy the testee of different heights, can only see a letter piece through the frame, can avoid the testee to kick and examine the rotation law, prevent to produce cheating, and the letter piece of placing in the box body can be changed, in order to satisfy ordinary testee or special testee's needs.

Description

Anti-cheating vision detector for physical examination

Technical Field

The invention belongs to the field of vision detection devices, and particularly relates to an anti-cheating vision detector for physical examination.

Background

The visual acuity test chart is a visual acuity test chart, and is printed with a plurality of rows of symbols or letters, wherein the rows are different in size, and the visual acuity is judged according to the size of the clearly seen symbols or letters. In testees, some individuals try to cheat and lie for some reason, the arrangement rule of each row of symbols or letters on the visual chart is memorized in advance, and other individuals are purely guessed, so that the accuracy and fairness of the visual test are influenced.

Disclosure of Invention

The invention provides an anti-cheating vision detector for physical examination, which is used for solving the defects in the prior art.

The invention is realized by the following technical scheme:

an anti-cheating vision detector for physical examination comprises a base, wherein a plurality of telescopic rods are fixedly installed on the top surface of the base respectively, the top ends of the telescopic rods are fixedly connected through a long-strip box, the inner walls of the two sides of the long-strip box are fixedly connected through a fixing plate, a through groove is formed in the front of the fixing plate, support plates are fixedly installed on the two sides of the back of the fixing plate respectively, the two support plates are movably connected through a first screw rod, a third bevel gear is fixedly installed on one side of the first screw rod, a through hole is formed in the inner wall of the back end of the long-strip box, a rotating rod is installed in the through hole through a bearing, a fourth bevel gear is fixedly installed at the front end of the rotating rod and can be meshed and matched with the third bevel gear, a first nut is arranged on the first screw rod in a matched mode, the bottom end of the first nut is fixedly connected with one end of a connecting rod, a sliding block is fixedly installed at the other end of the connecting rod, and is positioned in the through groove, the front of the fixed plate is matched with a vertical strip plate, the back of the strip plate is fixedly connected with the front of the sliding block, one side of the front of the strip plate is movably provided with a plurality of rotating shafts, the other side of the front of the strip plate is fixedly provided with a forward and reverse motor, the front end of an output shaft of the forward and reverse motor is fixedly provided with a first chain wheel, a second chain wheel is fixedly arranged on the rotating shafts, the plurality of second chain wheels are movably connected with the first chain wheel through a chain, the front end of each rotating shaft is fixedly provided with a box body, the front end of the box body is provided with an opening, the inner walls of the upper and lower ends of the box body are respectively provided with a screw hole, each screw hole is internally provided with a second screw rod in a matching way, the opposite ends of the two second screw rods are respectively movably provided with a squeezing plate, the squeezing plates are positioned in the box body, the two sides of the front of the strip box are respectively provided with strip-shaped windows, the sealing covers are arranged on the joint of the inner walls of one side of the windows positioned on the right side, and the placing grooves are respectively arranged on the two sides of the windows positioned on the left side, through a vertical guide bar fixed connection between the upper and lower both ends inner wall of every standing groove, it is equipped with the frame to be located left window fit, the upper and lower both ends inner wall that is located left window is the one end of an elasticity cloth of fixed connection respectively, the looks remote site of two elasticity cloths respectively with the upper and lower both ends fixed connection of frame, the both sides of elasticity cloth are a plurality of ring of fixed mounting respectively, it fits with a guide bar cover to be located a plurality of ring and a plurality of ring of one side, it is equipped with frame elevating gear to be located left standing groove fit.

As above a physical examination is with preventing visual acuity detection appearance that cheats, frame elevating gear constitute by lead screw, connecting rod, first bevel gear, rotating device, the upper end of lead screw and the top inner wall swing joint of left standing groove, lead screw and screw thread fit, one end of connecting rod and one side fixed connection of screw, the other end of connecting rod and the left side fixed connection of frame, the bottom of rectangular case is passed to the bottom of lead screw, first bevel gear fixed mounting is in the bottom of lead screw, first bevel gear is located the below of rectangular case, rotating device can control first bevel gear and rotate.

As above mentioned physical examination is with preventing eyesight detection instrument cheating, rotating device constitute by axis of rotation, turning handle, second bevel gear, the one end movable mounting of axis of rotation is in the left side outer wall bottom of rectangular case, the other end and the turning handle fixed connection of axis of rotation, the second bevel gear is installed on the axis of rotation, second bevel gear and first bevel gear meshing cooperation.

As for the cheating-prevention vision detector for physical examination, a plurality of rollers are movably mounted on the bottom surface of the base.

The anti-cheating vision detector for physical examination is characterized in that a handle is fixedly arranged on the front face of the sealing cover.

The cheating-prevention vision detector for physical examination is characterized in that the right side of the frame is fixedly connected with the matching rod.

The invention has the advantages that: when the vision detection is needed, the telescopic rod extends to drive the strip box to move upwards, the height of the strip box is adjusted to meet the test requirements of testees with different heights, then the sealing cover is opened, the rotating rod is rotated, the third bevel gear is meshed and matched with the third bevel gear to drive the first screw rod to rotate, the first screw rod is in threaded fit with the first nut, the first nut is fixedly connected with the connecting rod, the connecting rod is connected with the sliding block, the sliding block is positioned in the through groove and can be driven to move in the through groove, even if the sliding block moves towards the right side, the sliding block is connected with the strip plate, the strip plate is positioned behind the window at the right side, the letter block is placed between the two extrusion plates in the box body through the window, then the second screw rod is rotated to relatively move the two extrusion plates in the same box body to clamp the letter block, then the sealing cover is closed, and the rotating rod is reversely rotated, the long strip plate is driven by the sliding block to move towards the left side, the forward and reverse rotating motor starts to work at the moment, the first chain wheel is installed on the output shaft of the forward and reverse rotating motor, the first chain wheel is movably connected with the second chain wheels through the chain, so that the rotating shafts can be driven to rotate, namely, the box bodies are driven to rotate, namely, the letter blocks in the box bodies rotate, when the long strip plate moves to the rear of the left window, the forward and reverse rotating motor stops working at the moment, the frame lifting device controls the frame to move up and down, the letter blocks in the box bodies are seen through the frame, in the process that the frame moves up and down, the elastic cloth shields the airspace space of the left window, the condition of error finger is avoided, the vision detection deviation is prevented, namely, only one letter block can be seen through the frame, the testing process is more rigorous and accurate, and in the process that a testee cannot know the change of the letter blocks in the long strip box, rotate under with an unordered state, can avoid measurand person's plunger and survey the rotation law, prevent to produce cheating to the letter piece of placing in the box body can be changed, can be with changing letter "E" or letter "C", in order to satisfy ordinary measurand person's or special measurand person's needs, the function is various.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on the drawings without inventive labor.

FIG. 1 is a schematic structural view of the present invention; FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1; FIG. 3 is an enlarged view of view B of FIG. 2; FIG. 4 is a view toward C of FIG. 2; FIG. 5 is a partial enlarged view of I of FIG. 2; FIG. 6 is a partial enlarged view of II of FIG. 2; fig. 7 is a partially enlarged view of III of fig. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.

An anti-cheating vision detector for physical examination, as shown in the figure, comprises a base 1, wherein a plurality of telescopic rods 2 are fixedly installed on the top surface of the base 1 respectively, the top ends of the telescopic rods 2 are fixedly connected through a strip box 3, the inner walls of two sides of the strip box 3 are fixedly connected through a fixing plate 4, the fixing plate 4 is positioned at the middle rear part of the strip box 3, a through groove 5 is formed in the front of the fixing plate 4, support plates 6 are fixedly installed on two sides of the rear of the fixing plate 4 respectively, the two support plates 6 are movably connected through a first screw 7, a third bevel gear 35 is fixedly installed on one side of the first screw 7, a through hole is formed in the inner wall of the rear end of the strip box 1, a rotary rod 36 is installed in the through hole through a bearing, the periphery of the rotary rod 36 is fixedly connected with the inner wall of an inner ring of the bearing, the outer ring outer wall of the bearing is fixedly connected with the inner wall of the through hole, a fourth bevel gear 37 is fixedly installed at the front end of the rotary rod 36, the fourth bevel gear 37 can be engaged with the third bevel gear 35, a first nut 8 is arranged on the first screw 7 in a matching way, the bottom end of the first nut 8 is fixedly connected with one end of a connecting rod 9, the other end of the connecting rod 9 is fixedly provided with a slide block 10, the slide block 10 is positioned in the through groove 5, a vertical strip plate 11 is arranged in front of the fixing plate 4 in a matching way, the back of the strip plate 11 is fixedly connected with the front of the slide block 10, one side of the front of the strip plate 11 is movably provided with a plurality of rotating shafts 12, the plurality of rotating shafts 12 are sequentially arranged from top to bottom, the other side of the front of the strip plate 11 is fixedly provided with a forward and reverse motor 13, the front end of an output shaft of the forward and reverse motor 13 is fixedly provided with a first chain wheel 14, a second chain wheel 15 is fixedly arranged on the rotating shafts 12, the plurality of second chain wheels 15 are movably connected with the first chain wheel 14 through a chain, the front end of the rotating shafts 12 is fixedly provided with a box 16, and the front end of the box 16 is provided with an opening, the inner walls of the upper end and the lower end of the box body 16 are respectively provided with a screw hole, each screw hole is internally provided with a second screw rod 17 in a matching way, the opposite ends of the two second screw rods 17 are respectively movably provided with an extruding plate 18, the extruding plates 18 are positioned in the box body 16, the two sides of the extruding plates 18 are respectively matched with the inner walls of the two sides of the box body 16 in a contacting way, a letter block E or C is positioned between the two extruding plates 18 to clamp the letter block, the letter block is arranged in a sequence that the volume is gradually reduced from top to bottom, the two front sides of the long-strip box 3 are respectively provided with a long-strip window 19 for connection, the inner wall at one side of the window 19 at the right side is provided with a sealing cover 20, the inner walls at the two sides of the window 19 at the left side are respectively provided with placing grooves 21, and the inner walls at the upper end and the lower end of each placing groove 21 are fixedly connected through a vertical guide rod 22, be located left window 19 fit and be equipped with frame 23, the upper and lower both ends inner wall that is located left window 19 is the one end of a elastic cloth 24 of fixed connection respectively, two elastic cloth 24's the looks remote site respectively with the upper and lower both ends fixed connection of frame 23, elastic cloth 24's both sides respectively fixed mounting a plurality of ring 25, a plurality of ring 25 that is located same one side cooperates with a guide bar 22 suit, the guide bar 22 that is located the standing groove 21 on right side passes a plurality of ring 25, the guide bar 22 that is located the standing groove 21 on left side passes a plurality of ring 25, it is equipped with frame elevating gear to be located the left standing groove 21 fit, frame elevating gear can control reciprocating of frame 23, box body 16 removes behind left window 19, can see the alphabet piece in the box body 16 through frame 23. When the eyesight test is needed, the telescopic rod 2 extends to drive the long-strip box 3 to move upwards, the height of the long-strip box 3 is adjusted to meet the test requirements of testees with different heights, then the sealing cover 20 is opened, the rotating rod 36 is rotated, the third bevel gear 37 is meshed and matched with the third bevel gear 35 to drive the first screw rod 7 to rotate, the first screw rod 7 is in threaded fit with the first nut 8, the first nut 8 is fixedly connected with the connecting rod 9, the connecting rod 9 is connected with the sliding block 10, the sliding block 10 is positioned in the through groove 5 to drive the sliding block 10 to move in the through groove 5, even if the sliding block 10 moves towards the right side, the sliding block 10 is connected with the long-strip plate 11 to ensure that the long-strip plate 11 is positioned behind the window 19 on the right side, the letter block is placed between the two extrusion plates 18 in the box body 16 through the window 19, then the second screw rod 17 is rotated to ensure that the two extrusion plates 18 in the same box body 16 move relatively, clamping the letter blocks, then closing the sealing cover 20, reversely rotating the rotating rod 36, driving the long strip plate 11 to move to the left side through the sliding block 10, at the moment, the forward and reverse rotating motor 13 starts to work, the first chain wheel 14 is installed on the output shaft of the forward and reverse rotating motor 13, the first chain wheel 14 is movably connected with the second chain wheels 15 through chains, further driving the rotating shafts 12 to rotate, namely driving the box bodies 16 to rotate, namely the letter blocks in the box bodies 16 rotate, when the long strip plate 11 moves to the rear of the left window 19, at the moment, the forward and reverse rotating motor 13 stops working, the frame lifting device controls the frame 23 to move up and down, seeing the letter blocks in the box bodies 16 through the frame 23, and in the process that the frame 23 moves up and down, the elastic cloth 24 shields the airspace space of the left window 19, avoiding the occurrence of the false finger condition, and preventing the occurrence of the deviation of vision detection, can only see a letter piece through frame 23 promptly, it is more rigorous in the test procedure, it is accurate, and in frame 23 reciprocates, the letter piece that is measured in the person who tests can't know rectangular case 3 changes, rotate under an unordered state, can avoid measuring person's plunger and examine the rotation law, prevent to produce cheating, and the letter piece of placing in the box body 16 can be changed, can be with changing letter "E" or letter "C", in order to satisfy ordinary person who tests or special person's that tests needs, the function is various.

Specifically, the frame lifting device according to this embodiment includes a screw rod 26, a nut 27, a connecting rod 28, a first bevel gear 29, and a rotating device, where an upper end of the screw rod 26 is movably connected to an inner wall of a top end of the left placing groove 21, the screw rod 26 is in threaded fit with the nut 27, one end of the connecting rod 28 is fixedly connected to one side of the nut 27, the other end of the connecting rod 28 is fixedly connected to a left side of the frame 23, a bottom end of the screw rod 26 passes through a bottom end of the rectangular box 3, the first bevel gear 29 is fixedly mounted at a bottom end of the screw rod 26, the first bevel gear 29 is located below the rectangular box 3, and the rotating device can control the first bevel gear 29 to rotate. The screw rod 26 and the connecting rod 28 are positioned behind the guide rod 22, the rotating device controls the first bevel gear 29 to rotate, the screw rod 26 can be rotated, the screw rod 26 is in threaded fit with the screw nut 27, the screw nut 27 is fixedly connected with the connecting rod 28, the connecting rod 28 and the frame 23 can be driven to move up and down, the height of the frame 23 is adjusted, and then letter blocks with different sizes can be selected to be seen, and detection of different eyesight is carried out.

Specifically, the rotating device described in this embodiment is composed of a rotating shaft 30, a rotating handle 31, and a second bevel gear 32, one end of the rotating shaft 30 is movably installed at the bottom end of the outer wall of the left side of the elongated box 3, the other end of the rotating shaft 30 is fixedly connected with the rotating handle 31, the second bevel gear 32 is installed on the rotating shaft 30, and the second bevel gear 32 is engaged with the first bevel gear 29. The rotating handle 31 is rotated to drive the rotating shaft 30 to rotate, so as to drive the second bevel gear 32 to rotate, the second bevel gear 32 is engaged with the first bevel gear 29, so as to drive the first bevel gear 29 to rotate, and thus, the purpose of controlling the up-and-down movement of the frame 23 is achieved, and the operation is simple.

Further, a plurality of rollers 33 are movably mounted on the bottom surface of the base 1. The base 1 can be driven to move through the roller 33, and then the visual detection device can be moved to other detection areas according to needs, is not limited by the environment, and can be used for visual detection at more positions.

Further, a handle 34 is fixedly mounted to the front of the sealing cover 20 according to this embodiment. The sealing cover 20 can be opened more conveniently by the handle 34, and the operation is convenient.

Further, the right side of the frame 23 according to the present embodiment is fixedly connected with the engagement rod 38. The engagement bar 38 is located in the right-hand placement slot 21 and defines the frame 23, making the frame 23 more effective in use.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a physical examination is with preventing eyesight detector that cheats which characterized in that: comprises a base (1), a plurality of telescopic rods (2) are respectively and fixedly installed on the top surface of the base (1), the top ends of the telescopic rods (2) are fixedly connected through a long strip box (3), the inner walls of the two sides of the long strip box (3) are fixedly connected through a fixing plate (4), a through groove (5) is formed in front of the fixing plate (4), supporting plates (6) are respectively and fixedly installed on the two sides of the back of the fixing plate (4), the two supporting plates (6) are movably connected through a first screw (7), a third bevel gear (35) is fixedly installed on one side of the first screw (7), a through hole is formed in the inner wall of the back end of the long strip box (1), a rotating rod (36) is installed in the through hole through a bearing, a fourth bevel gear (37) is fixedly installed at the front end of the rotating rod (36), the fourth bevel gear (37) can be meshed and matched with the third bevel gear (35), a first nut (8) is arranged on the first screw (7) in a matched manner, one end of a connecting rod (9) is fixedly connected with one end of a connecting rod (9), a sliding block (10) is fixedly installed at the other end of the connecting rod (9), the sliding block (10) is positioned in the groove (5), a rotating shaft (11) which is fixedly installed at the front of the long strip plate (11) and is arranged in front of which is connected with a rotating shaft (11) which is arranged in front of the sliding block (11), a forward and reverse rotating motor (13) is fixedly installed on the other side of the front of the strip plate (11), a first chain wheel (14) is fixedly installed at the front end of an output shaft of the forward and reverse rotating motor (13), a second chain wheel (15) is fixedly installed on the rotating shaft (12), a plurality of second chain wheels (15) are movably connected with the first chain wheel (14) through a chain, a box body (16) is fixedly installed at the front end of the rotating shaft (12), an opening is formed in the front end of the box body (16), screw holes are respectively formed in the inner walls of the upper end and the lower end of the box body (16), a second screw rod (17) is arranged in each screw hole in a matched mode, squeezing plates (18) are respectively and movably installed at the opposite ends of the two second screw rods (17), the squeezing plates (18) are positioned in the box body (16), strip-shaped windows (19) are respectively formed in the two sides of the front of the strip box (3), a placing groove (21) is installed on the inner wall on one side of the window (19) on the right side, placing grooves (21) are respectively formed in a connecting manner, two inner walls on the two sides of the window (19) on the left side are respectively connected with a vertical guide rod (22), two elastic cloth covers (23) which are respectively connected with two elastic cloth frames (24) on the upper end of the left side, and the elastic cloth (23) which are respectively connected with two elastic cloth (23), a plurality of rings (25) are fixedly installed on two sides of the elastic cloth (24) respectively, the rings (25) located on the same side are in sleeved fit with a guide rod (22), and a frame lifting device is arranged in the placing groove (21) located on the left side in a matched mode.

2. The anti-cheating vision testing instrument for physical examination of claim 1, wherein the instrument comprises: the frame lifting device comprises a screw rod (26), a nut (27), a connecting rod (28), a first bevel gear (29) and a rotating device, wherein the upper end of the screw rod (26) is movably connected with the inner wall of the top end of a left placing groove (21), the screw rod (26) is in threaded fit with the nut (27), one end of the connecting rod (28) is fixedly connected with one side of the nut (27), the other end of the connecting rod (28) is fixedly connected with the left side of the frame (23), the bottom end of the screw rod (26) penetrates through the bottom end of a long-strip box (3), the first bevel gear (29) is fixedly installed at the bottom end of the screw rod (26), the first bevel gear (29) is located below the long-strip box (3), and the rotating device can control the first bevel gear (29) to rotate.

3. The anti-cheating vision testing apparatus of claim 2, wherein: the rotating device is composed of a rotating shaft (30), a rotating handle (31) and a second bevel gear (32), one end of the rotating shaft (30) is movably installed at the bottom end of the outer wall of the left side of the long-strip box (3), the other end of the rotating shaft (30) is fixedly connected with the rotating handle (31), the second bevel gear (32) is installed on the rotating shaft (30), and the second bevel gear (32) is meshed and matched with the first bevel gear (29).

4. The anti-cheating vision testing apparatus of claim 1, wherein: the bottom surface of the base (1) is movably provided with a plurality of rollers (33).

5. The anti-cheating vision testing instrument for physical examination of claim 1, wherein the instrument comprises: a handle (34) is fixedly arranged in front of the sealing cover (20).

6. The anti-cheating vision testing instrument for physical examination of claim 1, wherein the instrument comprises: the right side of the frame (23) is fixedly connected with a matching rod (38).