A vision detection device and detection method for ophthalmic physical examination

Abstract

The present invention belongs to the field of physical examination technology, and in particular, relates to a vision detection device for ophthalmic physical examination and a detection method thereof. The present invention provides a vision detection device for ophthalmic physical examination, including a detection plate, a plurality of detection blocks are arranged on the side wall of the detection plate, two detection blocks at the top of the plurality of detection blocks are rotatably mounted on the detection plate through a rotating shaft, and a vent is provided on the side wall of the detection plate, and a dust filter plate is fixedly mounted at the vent. The present invention sets an adjustment mechanism, and before the detection, the adjustment rod is driven to rotate, and the detection block is driven to rotate through the driving gear and the transmission gear. In this process, the block blocks the trapezoidal stop block, so that the adjustment rod and the detection block can only rotate 90° each time they rotate, so that the detection personnel can adjust the direction of the vision detection symbol on the detection block conveniently, and avoid the physical examination personnel memorizing the direction of the vision detection symbol, resulting in non-standard vision detection results.

Description

Technical Field

[0001] The invention belongs to the technical field of physical examination, and in particular relates to a vision detection device for ophthalmic physical examination and a detection method thereof. Background Art

[0002] Eye examination is a comprehensive examination of the examinee's eyes through medical means and methods, including vision, eye position, fundus, conjunctiva, intraocular pressure, etc., which can effectively prevent and control eye diseases and protect eye health. During the vision test of the eye examination, the staff is required to mark the "E" vision test symbol on the vision board, and then the examinee identifies the direction of the marked "E" vision test symbol to achieve the vision test of the examinee.

[0003] However, the above detection methods often have the following technical problems:

[0004] Before the physical examination, the examinee can memorize the direction of each "E" vision detection symbol on the vision board, but the existing detection equipment cannot adjust the direction of the "E" vision detection symbol, resulting in non-standard vision detection for the examinee;

[0005] During the use of the vision board, the electronic components inside the vision board need to be ventilated and cooled. During this process, a filter will be used to filter out the dust. However, after long-term use, a thick layer of dust will adhere to the filter, causing the filter to be blocked, reducing the ventilation and cooling effect. Summary of the invention

[0006] The purpose of the present invention is to address the problems raised in the above-mentioned background technology and to provide a vision detection device and a detection method for ophthalmic examinations that can rotate and adjust the detection block and the "E" vision detection symbol thereon to avoid the examinee memorizing the direction of the vision detection symbol and resulting in non-standard vision detection results.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A vision detection device for ophthalmic physical examination, comprising a detection board, a plurality of detection blocks are arranged on the side wall of the detection board, a vision detection symbol is arranged on the front, two detection blocks at the top are rotatably mounted on the detection board through a rotating shaft, a ventilation hole is opened on the side wall of the detection board, and a dust filter plate is fixedly installed at the ventilation hole;

[0009] An adjustment mechanism is used to rotationally adjust the detection block to prevent the examinee from memorizing the direction of the vision detection symbol on the detection block. The adjustment mechanism includes an adjustment rod rotatably installed on the side wall of the detection plate, and a driving gear is fixedly installed on the adjustment rod. Both of the rotating shafts penetrate the detection plate, and a transmission gear is fixedly installed on one end of the two rotating shafts close to the driving gear. The two transmission gears are respectively meshed with the two sides of the driving gear. Four control blocks are arranged in a circumferential array on each of the transmission gears, and a slider is elastically connected to each of the control blocks through a first spring. A trapezoidal stop block is fixedly installed on each of the sliders through a connecting rod, and two stop blocks are arranged on one side wall of the detection plate close to the trapezoidal stop block;

[0010] A cleaning mechanism is used for cleaning the dust filter plate to prevent dust from adhering to and clogging the dust filter plate, the cleaning mechanism comprising two fixed plates fixedly mounted on the side walls of the detection plate, a reciprocating screw being rotatably mounted between the two fixed plates, a lifting plate being threadedly connected to the reciprocating screw, a cleaning brush plate being hingedly mounted on a side wall of the lifting plate close to the dust filter plate through a hinge seat, the cleaning brush plate being elastically connected to the lifting plate through a second spring, a first gear being fixedly mounted on the bearing of the cleaning brush plate, an intermittent rack being fixedly mounted between the two fixed plates, the first gear and the intermittent rack being meshed with each other, and a transmission mechanism being arranged between the reciprocating screw and the adjusting mechanism;

[0011] The transmission mechanism includes a first worm fixedly mounted on the side wall of the detection plate, a second gear fixedly mounted on the first worm, the second gear meshing with the lower end of the driving gear, a transmission rod rotatably mounted on the side wall of the detection plate through a mounting plate, an end of the transmission rod close to the first worm is provided with a first worm wheel meshing with the first worm, the lower end of the reciprocating screw extends to a position below the fixed plate and is provided with a second worm wheel, and an end of the transmission rod close to the second worm wheel is provided with a second worm meshing with the second worm wheel.

[0012] Preferably, a knob is provided on the adjusting rod.

[0013] Preferably, two adjacent control blocks on the transmission gear are arranged at 90°.

[0014] Preferably, a limit rod is fixedly installed between the two fixed plates, and the lifting plate is slidably installed on the limit rod.

[0015] A method for detecting vision for ophthalmic physical examination comprises the following steps:

[0016] S1. Adjustment work: Before the test, the adjustment rod is turned by the knob, and the detection block is driven to rotate by the driving gear and the transmission gear. During this process, the trapezoidal stop block will overcome the elastic force of the first spring under the action of the inertial force, so that the slider slides out to the outside, so that the block blocks the next trapezoidal stop block, so that the adjustment rod can no longer rotate, so that the detection block can only rotate 90° each time it rotates, ensuring that the vision detection symbol on the detection block always remains in the four directions of up, down, left and right, and will not tilt, so as to facilitate the detection personnel to adjust the direction of the vision detection symbol on the detection block, and avoid the physical examination personnel memorizing the direction of the vision detection symbol, resulting in non-standard vision test results;

[0017] S2. Cleaning work: When adjusting the direction of the vision detection symbol on the detection block, the reciprocating screw will rotate synchronously, thereby driving the lifting plate to perform reciprocating vertical displacement, and further making the cleaning brush plate move up and down along the dust filter plate to clean the dust on the dust filter plate to prevent dust from adhering to and clogging the dust filter plate. During this process, since the first gear intermittently meshes with the intermittent rack, it will drive the cleaning brush plate to swing back and forth, sweeping away the dust on the cleaning brush plate, ensuring the cleanliness of the cleaning brush plate, and improving the cleaning effect of the dust filter plate.

[0018] Compared with the existing technology, the advantages of the vision detection device and detection method for ophthalmic physical examination are:

[0019] The present invention provides an adjustment mechanism. Before detection, the adjustment rod is driven to rotate, and the detection block is driven to rotate through the driving gear and the transmission gear. In this process, the block blocks the trapezoidal stop block, so that the adjustment rod and the detection block can only rotate 90° each time, ensuring that the vision detection symbols on the detection block always remain in the four directions of up, down, left and right without tilting. This not only makes it convenient for the detection personnel to adjust the direction of the vision detection symbols on the detection block, avoiding the physical examination personnel from memorizing the direction of the vision detection symbols and causing non-standard vision detection results, but also avoids the "E" vision detection symbol on the detection block from tilting, thereby improving the detection efficiency.

[0020] The present invention provides a cleaning mechanism, which can drive the lifting plate to perform reciprocating vertical displacement through the rotation of the reciprocating screw, thereby causing the cleaning brush plate to move up and down along the dust filter plate to clean the dust on the dust filter plate to prevent the dust from adhering to and clogging the dust filter plate. During this process, since the first gear intermittently meshes with the intermittent rack, it will drive the cleaning brush plate to swing back and forth, sweeping away the dust on the cleaning brush plate, thereby ensuring the cleanliness of the cleaning brush plate and improving the cleaning effect of the dust filter plate.

[0021] The present invention sets a transmission mechanism. During the process of adjusting the detection block, the first worm can be driven to rotate by the second gear, and the transmission rod can be further driven to rotate by the first worm wheel. The transmission rod can also drive the reciprocating screw to rotate through the second worm and the second worm wheel. This allows the dust filter plate to be automatically cleaned when the detection block is adjusted, without the need to set up an additional drive source, thus saving cleaning costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the vision detection device for ophthalmic physical examination provided by the present invention;

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the vision detection device for ophthalmic physical examination provided by the present invention from another angle;

[0024] Figure 3 It is a cross-sectional view of the adjustment mechanism of the vision detection device for ophthalmic physical examination provided by the present invention;

[0025] Figure 4 It is a partial structural schematic diagram of a cleaning mechanism in the vision testing device for ophthalmic physical examination provided by the present invention;

[0026] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0027] In the figure: 1. detection plate; 11. detection block; 12. rotating shaft; 13. ventilation port; 14. dust filter plate; 2. adjustment mechanism; 21. adjustment rod; 22. driving gear; 23. transmission gear; 24. control block; 25. first spring; 26. slider; 27. connecting rod; 28. trapezoidal block; 29. ​​stopper; 3. cleaning mechanism; 31. fixing plate; 32. reciprocating screw; 33. lifting plate; 34. hinged seat; 35. cleaning brush plate; 36. second spring; 37. first gear; 38. intermittent rack; 4. transmission mechanism; 41. first worm; 42. second gear; 43. transmission rod; 44. first worm wheel; 45. second worm wheel; 46. second worm; 5. knob; 6. limit rod. DETAILED DESCRIPTION

[0028] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0029] like Figure 1 - Figure 5 As shown, a vision testing device for ophthalmic physical examination includes a testing board 1, a plurality of testing blocks 11 are arranged on the side wall of the testing board 1, a vision testing symbol is arranged on the front of the testing board 1, two testing blocks 11 at the top are rotatably mounted on the testing board 1 through a rotating shaft 12, a ventilation hole 13 is opened on the side wall of the testing board 1, and a dust filter plate 14 is fixedly mounted at the ventilation hole 13;

[0030] The adjustment mechanism 2 is used to adjust the detection block 11 in rotation to prevent the examiner from memorizing the direction of the vision detection symbol on the detection block 11;

[0031] The cleaning mechanism 3 is used to clean the dust filter plate 14 to prevent dust from adhering to and clogging the dust filter plate 14 .

[0032] The adjustment mechanism 2 includes an adjustment rod 21 rotatably mounted on the side wall of the detection plate 1, a driving gear 22 is fixedly mounted on the adjustment rod 21, two rotating shafts 12 both penetrate the detection plate 1, a transmission gear 23 is fixedly mounted on one end of the two rotating shafts 12 close to the driving gear 22, the two transmission gears 23 are respectively meshed with the two sides of the driving gear 22, and each transmission gear 23 is provided with four control blocks 24 in a circumferential array, each control block 24 is elastically connected to a slider 26 through a first spring 25, each slider 26 is fixedly mounted with a trapezoidal stop block 28 through a connecting rod 27, and two stop blocks 29 are provided on one side wall of the detection plate 1 close to the trapezoidal stop block 28.

[0033] The adjusting rod 21 is provided with a knob 5 .

[0034] The two adjacent control blocks 24 on the transmission gear 23 are arranged at 90 degrees.

[0035] In view of the problem that before the physical examination in the prior art, the examinee can memorize the direction of each "E" vision detection symbol on the vision plate, but the existing detection equipment cannot adjust the direction of the "E" vision detection symbol, resulting in non-standard vision detection for the examinee, the present invention sets an adjustment mechanism 2. Before the detection, the adjustment rod 21 is driven to rotate, and the detection block 11 is driven to rotate through the driving gear 22 and the transmission gear 23. During this process, the trapezoidal stop block 28 will overcome the elastic force of the first spring 25 under the action of inertia force, so that the slider 26 slides out to the outside, so that the block 29 blocks the next trapezoidal stop block 28, so that the adjustment rod 21 can no longer rotate, so that the detection block 11 can only rotate 90° each time it rotates, ensuring that the vision detection symbol on the detection block 11 always remains in the four directions of up, down, left and right, and will not tilt. This not only facilitates the examinee to adjust the direction of the vision detection symbol on the detection block, avoids the examinee from memorizing the direction of the vision detection symbol and causing non-standard vision detection results, but also avoids the "E" vision detection symbol on the detection block 11 from tilting, thereby improving the detection efficiency.

[0036] It is worth mentioning that the above-mentioned adjustment mechanism 2 can also be connected to the detection blocks 11 on both sides of the lower detection blocks 11 to perform rotational adjustment on the lower detection blocks 11. The adjustment mechanism 2 is designed according to actual conditions and is not limited here.

[0037] The cleaning mechanism 3 includes two fixed plates 31 fixedly mounted on the side walls of the detection plate 1, a reciprocating screw 32 is rotatably mounted between the two fixed plates 31, a lifting plate 33 is threadedly connected to the reciprocating screw 32, a cleaning brush plate 35 is hingedly connected to a side wall of the lifting plate 33 close to the dust filter plate 14 through a hinge seat 34, the cleaning brush plate 35 is elastically connected to the lifting plate 33 through a second spring 36, a first gear 37 is fixedly mounted on the bearing of the cleaning brush plate 35, an intermittent rack 38 is fixedly mounted between the two fixed plates 31, the first gear 37 and the intermittent rack 38 are meshed with each other, and a transmission mechanism 4 is arranged between the reciprocating screw 32 and the adjustment mechanism 2.

[0038] Among them, a limit rod 6 is fixedly installed between the two fixed plates 31, and the lifting plate 33 is slidably installed on the limit rod 6. The limit rod 6 can limit the lifting plate 33, so that the lifting plate 33 can only move vertically when the reciprocating screw rod 32 rotates.

[0039] In view of the problem that a filter is needed to filter dust in the prior art, but a thick layer of dust will adhere to the filter after long-term use, causing the filter to be blocked and reducing the ventilation and heat dissipation effect, the present invention sets a cleaning mechanism 3, which can drive the lifting plate 33 to perform reciprocating vertical displacement through the rotation of the reciprocating screw 32, so that the cleaning brush plate 35 moves up and down along the dust filter plate 14 to clean the dust on the dust filter plate 14 to prevent the dust from adhering to and clogging the dust filter plate 14. During this process, since the first gear 37 intermittently meshes with the intermittent rack 38, it will drive the cleaning brush plate 35 to swing back and forth to sweep away the dust on the cleaning brush plate 35, thereby ensuring the cleanliness of the cleaning brush plate 35 and improving the cleaning effect of the dust filter plate 14.

[0040] The transmission mechanism 4 includes a first worm 41 fixedly mounted on the side wall of the detection plate 1, a second gear 42 fixedly mounted on the first worm 41, the second gear 42 meshing with the lower end of the driving gear 22, a transmission rod 43 rotatably mounted on the side wall of the detection plate 1 through a mounting plate, an end of the transmission rod 43 close to the first worm 41 is provided with a first worm wheel 44 meshing with the first worm 41, the lower end of the reciprocating screw 32 extends to a position below the fixed plate 31 and is provided with a second worm wheel 45, and an end of the transmission rod 43 close to the second worm wheel 45 is provided with a second worm 46 meshing with the second worm wheel 45.

[0041] In addition, the present invention provides a transmission mechanism 4, during the process of adjusting the detection block 11, the first worm 41 can be driven to rotate by the second gear 42, and the transmission rod 43 can be further driven to rotate by the first worm wheel 44. The transmission rod 43 can also drive the reciprocating screw 32 to rotate through the second worm 46 and the second worm wheel 45, so that the dust filter plate 14 can be automatically cleaned when the detection block 11 is adjusted, without the need to set up an additional drive source, thereby saving cleaning costs.

[0042] A method for detecting vision for ophthalmic physical examination comprises the following steps:

[0043] S1. Adjustment work: before the test, the adjustment rod 21 is rotated by the knob 5, and the detection block 11 is driven to rotate by the driving gear 22 and the transmission gear 23. During this process, the trapezoidal stop block 28 will overcome the elastic force of the first spring 25 under the action of the inertial force, so that the slider 26 slides out to the outside, so that the stop block 29 blocks the next trapezoidal stop block 28, so that the adjustment rod 21 can no longer rotate, so that the detection block 11 can only rotate 90° each time it rotates, ensuring that the vision detection symbol on the detection block 11 always remains in the four directions of up, down, left and right, and will not tilt, so as to facilitate the detection personnel to adjust the direction of the vision detection symbol on the detection block 11, and avoid the physical examination personnel from memorizing the direction of the vision detection symbol, resulting in non-standard vision detection results;

[0044] S2. Cleaning work: When adjusting the direction of the vision detection symbol on the detection block 11, the reciprocating screw 32 will rotate synchronously, thereby driving the lifting plate 33 to perform reciprocating vertical displacement, and further making the cleaning brush plate 35 move up and down along the dust filter plate 14 to clean the dust on the dust filter plate 14 to prevent the dust from adhering to and clogging the dust filter plate 14. During this process, since the first gear 37 is intermittently meshed with the intermittent rack 38, it will drive the cleaning brush plate 35 to swing back and forth, sweeping away the dust on the cleaning brush plate 35, ensuring the cleanliness of the cleaning brush plate 35, and improving the cleaning effect of the dust filter plate 14.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vision testing device for ophthalmic physical examination, characterized in that: The detection plate (1) comprises a detection plate (1), a plurality of detection blocks (11) are arranged on the side wall of the detection plate (1), a vision detection symbol is arranged on the front of the detection block (11), two detection blocks (11) at the top are rotatably mounted on the detection plate (1) via a rotating shaft (12), a ventilation hole (13) is opened on the side wall of the detection plate (1), and a dust filter plate (14) is fixedly mounted at the ventilation hole (13); An adjustment mechanism (2) for rotationally adjusting the detection block (11) to prevent the examinee from memorizing the direction of the vision detection symbol on the detection block (11), the adjustment mechanism (2) comprising an adjustment rod (21) rotatably mounted on the side wall of the detection plate (1), a driving gear (22) being fixedly mounted on the adjustment rod (21), two rotating shafts (12) both passing through the detection plate (1), a transmission gear (23) being fixedly mounted on one end of the two rotating shafts (12) close to the driving gear (22), the two transmission gears (23) respectively meshing with the two sides of the driving gear (22), four control blocks (24) being arranged in a circumferential array on each of the transmission gears (23), a slider (26) being elastically connected to each of the control blocks (24) via a first spring (25), a trapezoidal stop block (28) being fixedly mounted on each of the sliders (26) via a connecting rod (27), and two stop blocks (29) being arranged on one side wall of the detection plate (1) close to the trapezoidal stop block (28); A cleaning mechanism (3) is used for cleaning the dust filter plate (14) to prevent dust from adhering to and clogging the dust filter plate (14). The cleaning mechanism (3) comprises two fixed plates (31) fixedly mounted on the side walls of the detection plate (1). A reciprocating screw (32) is rotatably mounted between the two fixed plates (31). A lifting plate (33) is threadedly connected to the reciprocating screw (32). A cleaning brush plate (35) is hingedly connected to a side wall of the lifting plate (33) close to the dust filter plate (14) via a hinge seat (34). The cleaning brush plate (35) is elastically connected to the lifting plate (33) via a second spring (36). A first gear (37) is fixedly mounted on a bearing of the cleaning brush plate (35). An intermittent rack (38) is fixedly mounted between the two fixed plates (31). The first gear (37) and the intermittent rack (38) are meshed with each other. A transmission mechanism (4) is provided between the reciprocating screw (32) and the adjustment mechanism (2). The transmission mechanism (4) comprises a first worm (41) fixedly mounted on a side wall of the detection plate (1), a second gear (42) fixedly mounted on the first worm (41), the second gear (42) meshing with the lower end of the driving gear (22), a transmission rod (43) rotatably mounted on the side wall of the detection plate (1) via a mounting plate, a first worm wheel (44) meshing with the first worm (41) being provided at one end of the transmission rod (43) close to the first worm (41), a second worm wheel (45) being provided at the lower end of the reciprocating screw (32) extending to a position below the fixed plate (31), and a second worm (46) meshing with the second worm wheel (45) being provided at one end of the transmission rod (43) close to the second worm wheel (45).

2. The vision testing device for ophthalmic physical examination according to claim 1, characterized in that: The adjusting rod (21) is provided with a knob (5).

3. The vision testing device for ophthalmic physical examination according to claim 2, characterized in that: Two adjacent control blocks (24) on the transmission gear (23) are arranged at 90 degrees.

4. The vision testing device for ophthalmic physical examination according to claim 3, characterized in that: A limit rod (6) is fixedly mounted between the two fixed plates (31), and the lifting plate (33) is slidably mounted on the limit rod (6).

5. A method for detecting vision for ophthalmic physical examination, applied to the device for detecting vision for ophthalmic physical examination according to claim 4, characterized in that: The following steps are involved: S1. Adjustment work: before the test, the adjustment rod (21) is rotated by the knob (5), and the detection block (11) is driven to rotate by the driving gear (22) and the transmission gear (23). During this process, the trapezoidal stop block (28) overcomes the elastic force of the first spring (25) under the action of the inertial force, so that the slider (26) slides out to the outside, so that the stop block (29) blocks the next trapezoidal stop block (28), so that the adjustment rod (21) can no longer rotate, so that the detection block (11) can only rotate 90 degrees each time, ensuring that the vision detection symbol on the detection block (11) always remains in the four directions of up, down, left, and right without tilting, so that it is convenient for the detection personnel to adjust the direction of the vision detection symbol on the detection block (11), and avoid the physical examination personnel memorizing the direction of the vision detection symbol, resulting in non-standard vision detection results; S2. Cleaning work: When the direction of the vision detection symbol on the detection block (11) is adjusted, the reciprocating screw (32) will rotate synchronously, thereby driving the lifting plate (33) to perform reciprocating vertical displacement, further causing the cleaning brush plate (35) to move up and down along the dust filter plate (14) to clean the dust on the dust filter plate (14) to prevent the dust from adhering to and clogging the dust filter plate (14). During this process, since the first gear (37) is intermittently meshed with the intermittent rack (38), it will drive the cleaning brush plate (35) to swing back and forth, sweeping away the dust on the cleaning brush plate (35), ensuring the cleanliness of the cleaning brush plate (35) and improving the cleaning effect of the dust filter plate (14).

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