CN211299908U - Lifting type visual chart for ophthalmology department - Google Patents
Lifting type visual chart for ophthalmology department Download PDFInfo
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- CN211299908U CN211299908U CN201921112802.6U CN201921112802U CN211299908U CN 211299908 U CN211299908 U CN 211299908U CN 201921112802 U CN201921112802 U CN 201921112802U CN 211299908 U CN211299908 U CN 211299908U
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Abstract
The utility model discloses a lifting ophthalmic visual chart, which comprises a base and a visual chart body, wherein a supporting plate is fixed at the top of the base, a top plate is fixed at the top of the supporting plate, a fixed pulley is fixed at the top of the top plate, a connecting rod is movably penetrated through the side surface of the supporting plate, one end of the connecting rod is fixed with a same extrusion plate, the other end of the connecting rod is fixed with a same connecting plate, the extrusion plate is contacted with the edge of the visual chart body, one side of the visual chart body far away from the extrusion plate is contacted with the inner wall of the supporting plate, the outer side surface of the supporting plate is provided with a mounting groove, the utility model can fix the visual chart body at any height position and has good stability, and can reach any position in the vertical direction as required, so that the visual chart can be moved, and has simple structure, convenient operation is favorable to improving the effect of accurate inspection, has good practical significance.
Description
Technical Field
The utility model relates to an eye chart technical field especially relates to an over-and-under type ophthalmic eye chart.
Background
The visual acuity chart is a chart for measuring visual acuity, and is prepared according to the principle of visual angles. 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 14 lines of E characters with different sizes and different opening directions.
However, the existing visual chart is fixed on the wall and cannot move, and when the sight line of a person needing to be checked is parallel to one line of the visual chart 1.0, the visual chart is fixed on the wall and cannot move, so that the aim of accurate checking is difficult to achieve.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a lifting eye chart.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a lifting ophthalmic visual chart comprises a base and a visual chart body, wherein a supporting plate is fixed at the top of the base, a top plate is fixed at the top of the supporting plate, a fixed pulley is fixed at the top of the top plate, a connecting rod penetrates through the side face of the supporting plate in a movable manner, one end of the connecting rod is fixed with a same extrusion plate, the other end of the connecting rod is fixed with a same connecting plate, the extrusion plate is in contact with the edge of the visual chart body, one side of the visual chart body, far away from the extrusion plate, is in contact with the inner wall of the supporting plate, a mounting groove is formed in the outer side face of the supporting plate, the inner bottom of the mounting groove is connected with the connecting plate through a spring, a fixing plate is fixed at the outer side of the supporting plate, a threaded hole is formed in the side face of the fixing plate, a threaded column is in threaded, the utility model discloses a visual chart, including the backup pad, the backup pad is kept away from the one end movable mounting of fixed plate and is had the winding roller, the winding roller outside round trip has the haulage rope, the one end activity that the winding roller was kept away from to the haulage rope runs through the roof and fixes mutually with the top of visual chart body, the side of stripper plate is fixed with the blotter.
Preferably, the cross section of the supporting plate is U-shaped, and the supporting plate is perpendicular to the base.
Preferably, the number of the fixed pulleys is two, and the two fixed pulleys are respectively positioned in the middle and at the end of the top plate.
Preferably, the number of connecting rods and mounting grooves is a plurality of, a plurality of the connecting rods and mounting grooves are all evenly distributed on the outer side surface of the supporting plate.
Preferably, one end, far away from the handle rod, of the threaded column is semi-spherical, and one end, far away from the handle rod, of the threaded column is in contact with the connecting plate.
Preferably, the hauling rope is a plastic soft rope and is in contact with the fixed pulley.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses in through setting up connecting rod, stripper plate, connecting plate, spring, mounting groove, fixed plate, screw thread mouth, screw thread post and barre for the visual chart body can be fixed in arbitrary high position, and is stable good moreover.
2. The utility model discloses in through setting up backup pad, roof, fixed pulley, winding roller and haulage rope for the visual chart body can remove as required and reachs at the ascending optional position of vertical side, simple structure, convenient operation.
To sum up, this over-and-under type ophthalmic visual chart can make the visual chart body can fix in arbitrary high position, and is stable good moreover, can reach the optional position in vertical side as required in addition for the visual chart is mobilizable, simple structure, and convenient operation is favorable to improving the effect of accurate inspection, has good practical meaning.
Drawings
Fig. 1 is a schematic cross-sectional view of an elevating eye chart according to the present invention;
fig. 2 is an enlarged view of a portion a in fig. 1 according to the present invention.
In the figure: the visual testing device comprises a base 1, a supporting plate 2, a top plate 3, a fixed pulley 4, a visual chart body 5, a connecting rod 6, an extrusion plate 7, a connecting plate 8, a spring 9, a mounting groove 10, a fixing plate 11, a threaded port 12, a threaded column 13, a handle bar 14, a winding roller 15, a traction rope 16 and a cushion pad 17.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-2, a lifting ophthalmic visual chart comprises a base 1 and a visual chart body 5, wherein a supporting plate 2 is fixed on the top of the base 1, a top plate 3 is fixed on the top of the supporting plate 2, a fixed pulley 4 is fixed on the top of the top plate 3, a connecting rod 6 movably penetrates through the side surface of the supporting plate 2, one end of the connecting rod 6 is fixed with a same extrusion plate 7, the other end of the connecting rod 6 is fixed with a same connecting plate 8, the extrusion plate 7 is contacted with the edge of the visual chart body 5, one side of the visual chart body 5 far away from the extrusion plate 7 is contacted with the inner wall of the supporting plate 2, an installation groove 10 is formed in the outer side surface of the supporting plate 2, the inner bottom of the installation groove 10 is connected with the connecting plate 8 through a spring 9, a fixing plate 11 is fixed on the outer side of the supporting plate 2, a threaded opening 12, the one end of screw post 13 is fixed with barre 14, and the one end movable mounting that fixed plate 11 was kept away from to backup pad 2 has winding roller 15, and the winding roller 15 outside round joint has haulage rope 16, and the one end activity that winding roller 15 was kept away from to haulage rope 16 runs through roof 3 fixed mutually with the top of visual chart body 5, and the side of stripper plate 7 is fixed with blotter 17.
The cross section of backup pad 2 is the U font, backup pad 2 is mutually perpendicular with base 1, the quantity of fixed pulley 4 is two, two fixed pulley 4 are located the middle part and the tip of roof 3 respectively, connecting rod 6 is a plurality of with the quantity of mounting groove 10, a plurality of connecting rod 6 all is at the lateral surface evenly distributed of backup pad 2 with mounting groove 10, the one end that handlebar 14 was kept away from to screw thread post 13 is half sphere, and screw thread post 13 one end of keeping away from handlebar 14 contacts with connecting plate 8, haulage rope 16 is the soft rope of plasticity, haulage rope 16 contacts with fixed pulley 4.
The working principle is as follows: when needs go up and down to adjust, make screw thread post 13 take place to rotate in screw thread mouth 12 through barre 14 this moment, connecting plate 8 drives stripper plate 7 through connecting rod 6 under the spring action of spring 9 this moment and is close to towards the lateral wall of backup pad 2 mutually, rotate winding roll 15 this moment and drive the change that the height position took place for visual chart body 5 with passing through haulage rope 16, after the height position is confirmed, reverse rotation barre 14 this moment, thereby make stripper plate 7 and visual chart body 5 take place the extrusion, spring 9 gets into the inside of mounting groove 10 under the squeezing action of connecting plate 8 simultaneously, thereby make the position of visual chart body 5 to be injectd, when the height-adjusting once more of needs, repeat above-mentioned operation can.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The lifting ophthalmic visual chart comprises a base (1) and a visual chart body (5), and is characterized in that a supporting plate (2) is fixed at the top of the base (1), a top plate (3) is fixed at the top of the supporting plate (2), a fixed pulley (4) is fixed at the top of the top plate (3), a connecting rod (6) penetrates through the side face of the supporting plate (2) in a movable manner, one end of the connecting rod (6) is fixed with a same extrusion plate (7), the other end of the connecting rod (6) is fixed with a same connecting plate (8), the extrusion plate (7) is in contact with the edge of the visual chart body (5), one side of the visual chart body (5) far away from the extrusion plate (7) is in contact with the inner wall of the supporting plate (2), a mounting groove (10) is formed in the outer side face of the supporting plate (2), the inner bottom of the mounting groove (10) is connected with the connecting plate (8) through a spring (9), the outside of backup pad (2) is fixed with fixed plate (11), screw thread mouth (12) have been seted up to the side of fixed plate (11), the internal thread of screw thread mouth (12) is connected with screw thread post (13), the one end of screw thread post (13) is fixed with barre (14), the one end movable mounting that fixed plate (11) were kept away from in backup pad (2) has winding roller (15), winding roller (15) outside round joint has haulage rope (16), the one end activity that winding roller (15) were kept away from in haulage rope (16) is run through roof (3) and the top of visual acuity chart body (5) and is fixed mutually, the side of stripper plate (7) is fixed with blotter (17).
2. An elevating ophthalmic eye chart according to claim 1, characterized in that the cross section of the support plate (2) is U-shaped, the support plate (2) being perpendicular to the base (1).
3. The elevating ophthalmic visual acuity chart according to claim 1, characterized in that the number of the fixed pulleys (4) is two, and the two fixed pulleys (4) are respectively located at the middle and the end of the top plate (3).
4. The elevating ophthalmic visual acuity chart according to claim 1, wherein the number of the connecting rods (6) and the mounting grooves (10) is several, and the connecting rods (6) and the mounting grooves (10) are uniformly distributed on the outer side surface of the supporting plate (2).
5. An elevating ophthalmic visual acuity chart according to claim 1, characterised in that the end of the threaded post (13) remote from the handle bar (14) is semi-spherical and the end of the threaded post (13) remote from the handle bar (14) is in contact with the connecting plate (8).
6. The elevating ophthalmic visual acuity chart according to claim 1, characterized in that the traction ropes (16) are plastic soft ropes, the traction ropes (16) being in contact with the fixed pulleys (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921112802.6U CN211299908U (en) | 2019-07-16 | 2019-07-16 | Lifting type visual chart for ophthalmology department |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921112802.6U CN211299908U (en) | 2019-07-16 | 2019-07-16 | Lifting type visual chart for ophthalmology department |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211299908U true CN211299908U (en) | 2020-08-21 |
Family
ID=72061462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921112802.6U Active CN211299908U (en) | 2019-07-16 | 2019-07-16 | Lifting type visual chart for ophthalmology department |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211299908U (en) |
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2019
- 2019-07-16 CN CN201921112802.6U patent/CN211299908U/en active Active
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