Vision testing device for optometry

Abstract

The vision testing device comprises a base, a supporting frame is fixed to the top of the base, the supporting frame is of a C-shaped structure, a lifting mechanism is installed in the supporting frame, a movable column is fixed to the side face of the lifting mechanism, a supporting plate is fixed to the side face of the movable column, and the supporting plate is fixed to the top of the supporting frame. An adjusting mechanism is installed at the top of the supporting plate, and optometry lens sets are installed at the two ends of the top of the adjusting mechanism. Compared with the prior art, the lifting mechanism is arranged and used for adjusting the height of the movable column, and then the heights of the supporting plate, the adjusting mechanism and the optometry lens set which are installed on the movable column are adjusted, so that different people can use the optometry device conveniently; meanwhile, the adjusting mechanism can flexibly adjust the distance between the optometry lens groups according to the interpupillary distance of a user, and the device is simple in structure and very convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of vision detection, in particular to a vision testing device for optometry. Background Art

[0002] Vision testing is an effective way to assess eye health and can detect vision problems early so that appropriate treatment measures can be taken in a timely manner. The distance and near vision of the human eye are determined by measuring the eye chart and instrument testing. It can check naked eye vision or corrected vision with glasses.

[0003] The existing vision detection device is fixed on the workbench, and the user uses the lens group to perform vision testing. However, since the height of the vision detection device cannot be adjusted, users of different heights cannot use it comfortably. There are two existing solutions. One is to adjust the user's sitting posture through an adjustable height chair, and the other is to adjust the angle of the lens group to perform testing at different angles. However, the above two methods do not solve the problem of testing comfort. When the user is in an uncomfortable posture, it affects the vision test results. There are certain deficiencies in its use. For this reason, we propose a vision detection device for optometry. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and provides a vision testing device for optometry.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A vision testing device for optometry comprises a base, a support frame is fixed on the top of the base, the support frame is a C-shaped structure, a lifting mechanism is installed inside the support frame, a movable column is fixed on the side of the lifting mechanism, a support plate is fixed on the side of the movable column, an adjustment mechanism is installed on the top of the support plate, and trial lens groups are installed at both ends of the top of the adjustment mechanism.

[0007] Preferably, the lifting mechanism includes a threaded column fixed inside the support frame, the threaded column is connected to a first threaded sleeve via a thread, a worm gear is fixedly sleeved on the first threaded sleeve, the first threaded sleeve is rotatably connected to a first shell, a worm is installed on the side of the first shell, and the worm is inserted into the interior of the first shell and rotatably connected thereto.

[0008] Preferably, the first shell and the support frame are slidably connected, the worm and the worm wheel are meshingly driven, and the movable column is fixed to the side of the first shell.

[0009] Preferably, the adjusting mechanism includes a movable frame fixed on the top of the support plate, a second shell is fixed inside the movable frame, an adjusting rod is installed on the top of the second shell, the adjusting rod is inserted into the interior of the second shell and is connected to the first bevel gear, the interior of the second shell is rotatably connected to a rotating shaft, a second bevel gear is fixedly sleeved on the rotating shaft, both ends of the rotating shaft pass through the second shell and are connected to a screw rod, a second threaded sleeve is threadedly connected to the screw rod, and a slider is fixedly sleeved on the second threaded sleeve.

[0010] Preferably, the threads of the two screw rods have opposite rotation directions, the first bevel gear and the second bevel gear are meshed and driven, the slider and the movable frame are slidably connected, and the trial lens set is installed on the top of the slider.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model is provided with a lifting mechanism for adjusting the height of the movable column, and then adjusting the height of the support plate, the adjustment mechanism and the trial lens group installed on the movable column, so as to facilitate use by different people. At the same time, the adjustment mechanism can flexibly adjust the distance between the trial lens groups according to the pupil distance of the user. The device has a simple structure and is very convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is an isometric view of a vision testing device for optometry proposed by the utility model;

[0014] Figure 2 for Figure 1 Installation diagram of the middle lifting mechanism;

[0015] Figure 3 for Figure 1 Cross-sectional view of the middle adjustment mechanism.

[0016] In the figure: 1 base, 2 support frame, 3 lifting mechanism, 31 threaded column, 32 first threaded sleeve, 33 worm gear, 34 first housing, 35 worm, 4 movable column, 5 support plate, 6 adjustment mechanism, 61 movable frame, 62 second housing, 63 adjustment rod, 64 first bevel gear, 65 rotating shaft, 66 second bevel gear, 67 screw, 68 second threaded sleeve, 69 slider, 7 trial lens group. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] Reference Figure 1-3, a vision testing device for optometry, comprising a base 1, a support frame 2 is fixed on the top of the base 1, the support frame 2 is a C-shaped structure, a lifting mechanism 3 is installed inside the support frame 2, a movable column 4 is fixed on the side of the lifting mechanism 3, the lifting mechanism 3 comprises a threaded column 31 fixed inside the support frame 2, a first threaded sleeve 32 is connected to the threaded column 31 through a thread, a worm gear 33 is fixedly sleeved on the first threaded sleeve 32, a first shell 34 is rotatably connected to the first threaded sleeve 32, a worm 35 is installed on the side of the first shell 34, the worm 35 is inserted into the interior of the first shell 34 and is rotatably connected thereto, the first shell 34 is slidably connected to the support frame 2, the worm 35 and the worm gear 33 are meshingly driven, the movable column 4 is fixed on the side of the first shell 34, a support plate 5 is fixed on the side of the movable column 4, an adjusting mechanism 6 is installed on the top of the support plate 5, both ends of the top of the adjusting mechanism 6 are installed with an optometry lens group 7, the adjusting mechanism 6 comprises a movable frame 61 fixed on the top of the support plate 5, the inner fixed portion of the movable frame 61 is fixed to the inner portion of the movable frame 61, and the inner fixed portion of the movable frame 61 is fixed to the inner portion of the movable frame 61. A second housing 62 is provided, and an adjusting rod 63 is installed on the top of the second housing 62. The adjusting rod 63 is inserted into the interior of the second housing 62 and is connected to a first bevel gear 64. A rotating shaft 65 is rotatably connected to the interior of the second housing 62. A second bevel gear 66 is fixedly sleeved on the rotating shaft 65. Both ends of the rotating shaft 65 pass through the second housing 62 and are connected to a screw rod 67. A second threaded sleeve 68 is threadedly connected to the screw rod 67. A slider 69 is fixedly sleeved on the second threaded sleeve 68. The threads of the two screw rods 67 have opposite rotation directions. The first bevel gear 64 and the second bevel gear 66 are meshed transmission. The slider 69 is slidably connected to the movable frame 61. The trial lens group 7 is installed on the top of the slider 69. A lifting mechanism is provided to adjust the height of the movable column, and then the height of the support plate, the adjusting mechanism and the trial lens group installed on the movable column is adjusted, so that different people can use it conveniently. At the same time, the adjusting mechanism can flexibly adjust the distance between the trial lens groups according to the pupil distance of the user. The device has a simple structure and is very convenient to use.

[0019] When in use, the device is fixed on a workbench through the base 1. The user sits in front of the workbench and rotates the worm 35 to make it rotate. The worm 35 drives the first threaded sleeve 32 to rotate through meshing transmission with the worm wheel 33. The first threaded sleeve 32 drives the first shell 34 to slide inside the support frame 2 through thread transmission with the threaded column 31. The first shell 34 drives the movable column 4 to move, and the height of the support plate 5 and the adjustment mechanism 6 is driven by the movable column 4, and then the height of the trial lens group 7 is adjusted, so that different users can use it in a comfortable posture and improve the accuracy of optometry. At the same time, the adjustment rod 63 is rotated to make it rotate The adjusting rod 63 drives the first bevel gear 64 to rotate, the first bevel gear 64 drives the rotating shaft 65 to rotate through the meshing transmission with the second bevel gear 66, the rotating shaft 65 drives the screw rod 67 to rotate, the screw rod 67 drives the slider 69 to slide in the movable frame 61 through the thread transmission with the second threaded sleeve 68, because the threads of the screw rods 67 on both sides have opposite rotation directions, the two sliders 69 move in opposite directions, the slider 69 drives the trial lens group 7 to move, and the distance between the two trial lens groups 7 is adjusted according to the user's pupil distance. The device has a simple structure, can be flexibly adjusted according to the specific situation of the user, and is very convenient to use.

[0020] In summary, compared with the prior art, the utility model provides a lifting mechanism for adjusting the height of the movable column, and then adjusts the height of the support plate, the adjustment mechanism and the trial lens group installed on the movable column, so as to facilitate use by different people. At the same time, the adjustment mechanism can flexibly adjust the distance between the trial lens groups according to the user's pupil distance. The device has a simple structure and is very convenient to use.

[0021] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A vision testing device for optometry, comprising a base (1), characterized in that: A support frame (2) is fixed on the top of the base (1), and the support frame (2) is a C-shaped structure. A lifting mechanism (3) is installed inside the support frame (2), and a movable column (4) is fixed on the side of the lifting mechanism (3). A support plate (5) is fixed on the side of the movable column (4), and an adjustment mechanism (6) is installed on the top of the support plate (5). Both ends of the top of the adjustment mechanism (6) are installed with trial lens groups (7).

2. The vision testing device for optometry according to claim 1, characterized in that: The lifting mechanism (3) comprises a threaded column (31) fixed inside the support frame (2), the threaded column (31) being connected to a first threaded sleeve (32) by means of a thread, the first threaded sleeve (32) being fixedly sleeved with a worm gear (33), the first threaded sleeve (32) being rotatably connected to a first housing (34), a worm (35) being mounted on a side surface of the first housing (34), the worm (35) being inserted into the interior of the first housing (34) and being rotatably connected thereto.

3. The vision testing device for optometry according to claim 2, characterized in that: The first housing (34) is slidably connected to the support frame (2), the worm (35) and the worm wheel (33) are meshingly driven, and the movable column (4) is fixed on the side of the first housing (34).

4. The vision testing device for optometry according to claim 1, characterized in that: The adjustment mechanism (6) comprises a movable frame (61) fixed on the top of the support plate (5), a second shell (62) is fixed inside the movable frame (61), an adjustment rod (63) is installed on the top of the second shell (62), the adjustment rod (63) is inserted into the inside of the second shell (62) and is connected to a first bevel gear (64), a rotating shaft (65) is rotatably connected inside the second shell (62), a second bevel gear (66) is fixedly sleeved on the rotating shaft (65), two ends of the rotating shaft (65) pass through the second shell (62) and are connected to a screw rod (67), a second threaded sleeve (68) is threadedly connected to the screw rod (67), and a slider (69) is fixedly sleeved on the second threaded sleeve (68).

5. The vision testing device for optometry according to claim 4, characterized in that: The threads of the two screw rods (67) have opposite rotation directions, the first bevel gear (64) and the second bevel gear (66) are in meshing transmission, the slider (69) and the movable frame (61) are in sliding connection, and the trial lens group (7) is installed on the top of the slider (69).

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