CN219742671U

CN219742671U - Vision inspection rod

Info

Publication number: CN219742671U
Application number: CN202222682919.6U
Authority: CN
Inventors: 姜爱新; 曹淑娟; 玛依拉; 库尔班; 陈梅; 王苗苗
Original assignee: Kashgar Prefecture No1 People's Hospital
Current assignee: Kashgar Prefecture No1 People's Hospital
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2023-09-26
Anticipated expiration: 2032-10-11

Abstract

The utility model discloses a vision inspection rod which comprises a rod body, a rear cover, a light source, an aperture adjusting device, a rotating device and a battery accommodating cavity. The rod body is provided with an inner cavity; the light source is arranged in the inner cavity; the battery accommodating cavity is arranged in the inner cavity, and a battery for supplying power to the light source is arranged in the battery accommodating cavity; the rear cover is provided with a spring and a button, the spring can be driven to move by pressing the button so as to contact the battery, so that the light source emits light, and the rear cover is arranged at the tail end of the inner cavity; the aperture adjusting device is provided with an aperture hole formed by splicing a plurality of aperture blades, the aperture hole can be used for the light of the light source to pass through, and the aperture adjusting device is arranged at the front end of the inner cavity; the rotating device is provided with a telescopic rod and a swivel, one end of the telescopic rod is connected with the aperture adjusting device, the other end of the telescopic rod is movably connected with the swivel, and the telescopic rod can be driven to be stretched or shortened by rotating the swivel, so that the aperture is narrowed or enlarged. The utility model can accurately indicate the sighting target by using the aperture and can be adjusted along with the size of the sighting target.

Description

Vision inspection rod

Technical Field

The utility model relates to the field of vision testing, in particular to a vision testing rod.

Background

An eye chart is a chart for detecting vision. Currently, the international standard visual acuity chart consists of 12 visual marks 'E' with different sizes and different opening directions. The line of sight of the examinee is parallel to a line of 1.0, and the distance between the eye chart and the examinee is 5 meters, and the distance between the eye chart and the examinee is fixed. When the test is performed, the examinee firstly covers one eye, and the optotype E is recognized from top to bottom by one eye until the optotype E cannot be recognized, then the other eye is replaced, and the process of recognizing just is repeated.

However, as the myopia rate of the population of China is continuously improved, many highly myopic testees cannot see the position pointed by the vision inspection bar of the ophthalmologist or the head of the vision inspection bar blocks the optotype E, so that judgment of the testees is affected, and the finally measured vision result is inaccurate. Thus, there is a need for a vision test stick that accurately indicates the optotype and that adjusts with the size of the optotype.

Disclosure of Invention

The object of the present utility model is to provide a vision examination stick with which it is desired to achieve such a technical effect that the optotype can be accurately indicated and adjusted with the size of the optotype.

The utility model is realized by the following technical scheme:

a vision inspection wand comprising a wand body having an interior chamber; a light source disposed in the interior chamber; the battery accommodating cavity is arranged in the inner cavity, and a battery for supplying power to the light source is arranged in the battery accommodating cavity; a rear cover provided with a spring and a button, wherein the spring is connected with the button, and pressing the button can drive the spring to move so as to contact the battery, so that the light source emits light, and the rear cover is arranged at the tail end of the inner cavity; the aperture adjusting device is provided with a plurality of aperture blades, the aperture blades are spliced to form an aperture hole, the aperture hole can be used for the light of the light source to pass through, and the aperture adjusting device is arranged at the front end of the inner cavity; the rotating device is provided with a telescopic rod and a swivel, one end of the telescopic rod is connected with the aperture adjusting device, the other end of the telescopic rod is movably connected with the swivel, and the swivel can be rotated to drive the telescopic rod to extend or shorten so that the aperture is contracted or enlarged. The eye doctor can make the spring contact with the power supply by pressing the button of the rear cover of the vision testing rod so as to turn on the light source, then adjust the size of the aperture hole formed by a plurality of aperture blades in the aperture adjusting device by rotating the rotating device according to the size of the sighting target of the vision testing chart to be tested, thereby controlling the size of the aperture irradiated by the vision testing rod, and enabling the aperture to surround the indicated sighting target, so that the effect of accurately indicating the position of the sighting target is realized.

Further, the middle part of swivel is equipped with first gear, and the telescopic link has first body of rod and second body of rod, the one end of first body of rod with aperture blade connects, the other end of first body of rod with the one end of second body of rod is connected, the surface of the other end of second body of rod is equipped with the second teeth of a cogwheel, first gear with the second gear meshes mutually, the one end of first body of rod has first external screw thread, the one end of second body of rod has first internal screw thread, first external screw thread with first internal screw thread assorted. The telescopic rod is driven by the rotating ring of the rotating device to rotate, so that the two rod bodies of the telescopic rod do telescopic motion through the threaded structure of the telescopic rod, and the size of a diaphragm hole formed by a plurality of diaphragm blades in the diaphragm adjusting device is controlled.

Further, the rod body further comprises a rubber rod cap, the rubber rod cap is arranged on the outer wall of the front end of the rod body, the rubber rod cap is provided with a through hole, and the through hole is matched with the rod body. The rubber cap is sleeved at the front end of the visual inspection rod to protect the visual inspection rod, so that the visual inspection rod cannot be worn due to collision with the visual chart for a long time, and meanwhile, the rubber has a certain noise reduction effect, so that when the visual inspection rod touches the visual chart, the collision noise of the visual inspection rod and the visual chart can be reduced.

Further, the rod body also includes a glass sheet disposed at a port of the front end of the rod body. Advantageously, the port-mounted glass sheet at the front end of the vision inspection bar prevents dust from entering, thereby affecting the intensity of the light emitted by the vision inspection bar.

Further, the rod body is also provided with a plurality of protruding parts, and the protruding parts are uniformly arranged on the outer wall of the tail end of the rod body. The anti-slip visual inspection rod has the advantages that the protruding portion is arranged at the tail end of the visual inspection rod to achieve an anti-slip effect, when an ophthalmologist holds the visual inspection rod with the gloves, the friction force between the gloves and the visual inspection rod can be increased through the protruding portion, and the visual inspection rod is prevented from being accidentally slipped down to cause damage to the visual inspection rod.

Further, the tail end of the rod body is provided with an internal thread, the outer wall of the rear cover is provided with an external thread, and the internal thread is matched with the external thread. Advantageously, the end of the vision inspection wand and the rear cover may be connected by threaded connection, which is both convenient and robust.

Further, the rear cover further comprises a round hole, and the round hole is vertically welded on the rear cover. The rear cover of the vision testing rod is provided with the round hole, so that when the vision testing rod is not used, an ophthalmologist can hang the vision testing rod through the round hole of the rear cover, and the vision testing rod is prevented from being damaged due to rolling and sliding on the tabletop.

Further, the light source is an LED lamp. The LED lamp has the advantages that the lamp body of the LED lamp is small and exquisite, the LED lamp can be installed in the rod body of the vision inspection rod, and the LED lamp has the characteristics of low energy consumption and long service life.

Further, the method comprises the steps of. The shape of the aperture blades is arc-shaped. The visual effect is better when the diaphragm surrounds the optotype.

The utility model has the advantages that:

according to the vision examination rod, an ophthalmologist can adjust the size of the diaphragm irradiated by the vision examination rod according to the size of the sighting target to be examined by a person to be examined, so that the diaphragm surrounds the sighting target, and the position of the sighting target can be accurately indicated.

Drawings

FIG. 1 is a schematic cross-sectional view of a vision inspection stick of the present utility model;

FIG. 2 is a schematic cross-sectional view of a minimum aperture structure of the aperture adjustment device of the present utility model;

FIG. 3 is a schematic cross-sectional view of an aperture structure of the aperture adjusting apparatus of the present utility model;

FIG. 4 is a schematic cross-sectional view of a maximum aperture structure of the aperture adjustment device of the present utility model;

FIG. 5 is a schematic cross-sectional view of a rotary device according to the present utility model;

meaning of reference numerals in the drawings: 1. the device comprises a rod body, 2, a rear cover, 3, a spring, 4, a button, 5, a light source, 6, an aperture blade, 7, a swivel, 8, a battery accommodating cavity, 9, a first rod body, 10, a second rod body, 11, a rubber rod cap, 12, a glass sheet, 13, a protruding part, 14, a round hole, 15, a battery, 16, an inner cavity, 17, an aperture hole, 18, a first gear, 19 and a second gear.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "left," "right," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and for simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, as well as a specific orientation configuration and operation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

Examples

Referring to fig. 1 to 4, a vision inspection bar includes a bar body 1, a rear cover 2, a light source 5, an aperture adjusting device, a rotating device, and a battery receiving chamber 8. The wand 1 has an internal chamber 16; the light source 5 is arranged in the inner chamber 16; the battery accommodating cavity 8 is arranged in the inner cavity 16, and a battery 15 for supplying power to the light source 5 is arranged in the battery accommodating cavity 8; the rear cover is provided with a spring 3 and a button 4, the spring 3 is connected with the button 4, and pressing the button 4 can drive the spring 3 to move so as to contact the battery 15, so that the light source 5 emits light, and the rear cover 2 is arranged at the tail end of the inner cavity 16; the aperture adjusting device is provided with a plurality of aperture blades 6, the aperture blades 6 are spliced to form an aperture hole 17, the aperture hole 17 can be used for passing light of the light source 5, and the aperture adjusting device is arranged at the front end of the inner cavity 16; the rotating device is provided with a telescopic rod and a swivel 7, one end of the telescopic rod is connected with the aperture adjusting device, the other end of the telescopic rod is movably connected with the swivel 7, and the swivel 7 can be rotated to drive the telescopic rod to extend or shorten so that the aperture hole 17 is contracted or enlarged.

Specifically, a cavity is formed in the rod body, a spring is arranged on the inner side face of the rear cover, a button is arranged on the outer side face of the rear cover, one end of the spring is in contact with one pole of the battery, the other pole of the battery is in contact with a front end electric plate of the battery accommodating cavity, the battery accommodating cavity is connected with the light source through an electric wire, the other end of the spring is connected with the button, and the opening or closing of the light source of the vision inspection rod can be controlled by pressing the button; when the light source is turned on, the swivel in the rotating device is rotated to extend or shorten the telescopic rod connected with the swivel, so that the aperture hole formed by a plurality of aperture blades in the aperture adjusting device connected with the telescopic rod is reduced or enlarged accordingly, and the effect of adjusting the size of the irradiated aperture is achieved. Finally, the size of the aperture is adjusted according to the size of the optotype of the visual chart, so that the aperture just surrounds the optotype, and the checked person can clearly know the position indicated by the ophthalmologist.

Referring to fig. 5, as an alternative embodiment, in some examples, a first gear 18 is provided at the middle of the swivel 7, the telescopic rod has a first rod body 9 and a second rod body 10, one end of the first rod body 9 is connected with the aperture blade 6, the other end of the first rod body 9 is connected with one end of the second rod body 10, a second gear 19 is provided on the outer surface of the other end of the second rod body 10, the first gear 18 is meshed with the second gear 19, one end of the first rod body 9 has a first external thread, one end of the second rod body 10 has a first internal thread, and the first external thread is matched with the first internal thread.

Specifically, the middle part of swivel is installed one and is parallel with the gear of swivel plane, and the end cover of the surface of the second body of rod has the gear, and two gears mesh mutually. When the swivel is rotated, the second rod body can do autorotation movement, and meanwhile, the first rod body and the second rod body do telescopic movement through the matching of internal threads and external threads, so that the size of a diaphragm hole formed by a diaphragm blade welded with the first rod body is changed.

As an alternative embodiment, in some embodiments, the rod 1 further comprises a rubber rod cap 11, the rubber rod cap 11 being provided on the outer wall of the front end of the rod 1, the rubber rod cap 11 having a through hole, the through hole being matched with the rod 1.

Specifically, a rubber rod cap is sleeved on the outer wall of the front end of the vision testing rod, and two ends of the rubber rod cap are communicated, so that the vision testing rod is protected from being influenced. Because the rubber has a certain noise reduction effect, when the visual inspection rod touches the visual chart, the noise of the collision between the visual inspection rod and the visual chart can be reduced.

As an alternative embodiment, in some embodiments, the rod 1 further comprises a glass sheet 12, the glass sheet 12 being provided at a port of the front end of the rod 1.

Specifically, a glass sheet is arranged at the port of the front end of the vision inspection rod to prevent dust from entering, thereby affecting the intensity of light irradiated by the vision inspection rod.

As an alternative embodiment, in some embodiments, the rod 1 further has a plurality of protrusions 13, and the plurality of protrusions 13 are uniformly disposed on the outer wall of the distal end of the rod 1.

Specifically, a plurality of convex parts are uniformly welded on the outer wall of the tail end of the vision inspection rod. When the eye doctor holds the vision examination rod with the glove, the bulge part can increase the friction force between the glove and the vision examination rod, so that the vision examination rod is prevented from being damaged due to accidental sliding.

As an alternative embodiment, in some embodiments, the end of the rod 1 has a second internal thread, and the outer wall of the rear cover 2 has a second external thread, and the second internal thread mates with the second external thread.

Specifically, the tail end of the rod body of the vision inspection rod is connected with the rear cover through a threaded structure, and the connection mode is convenient and stable.

As an alternative embodiment, in some embodiments, the rear cover 2 further comprises a circular hole 14, and the circular hole 14 is welded to the rear cover 2 vertically.

Specifically, a round hole perpendicular to the rear cover is welded on the rear cover. When the vision testing rod is not used, an ophthalmologist can hang the vision testing rod through the round hole of the rear cover, so that the vision testing rod is prevented from being damaged due to rolling and sliding on the tabletop.

As an alternative embodiment, in some embodiments, the light source 5 is an LED lamp.

Specifically, the light source installed in the vision inspection bar is an LED lamp. The LED lamp has the characteristics of small lamp body, low energy consumption and long service life.

Referring to fig. 2 and 3, as an alternative embodiment, in some embodiments, the aperture blades 6 are arcuate in shape.

Specifically, the shape of the aperture blade has a certain arc structure, and a plurality of arc aperture blades are spliced to enable the irradiated light to be circular, so that a better visual effect is achieved when the aperture surrounds the sighting mark.

As an embodiment of the present utility model: when the eye doctor performs vision examination on the examined person, the rear cover button of the vision examination rod is pressed, the spring is in contact with the power supply, so that the light source is turned on, then the aperture adjusting device connected with the eye chart is adjusted by rotating the rotating device according to the size of an eye mark E on the eye chart, and the size of an aperture hole formed by a plurality of aperture blades in the aperture adjusting device is used for controlling the size of the aperture irradiated by the vision examination rod, so that the eye mark E can be surrounded by the aperture, and the examined person can clearly know the position indicated by the eye doctor.

The foregoing detailed description is directed to embodiments of the utility model which are not intended to limit the scope of the utility model, but rather to cover all modifications and variations within the scope of the utility model.

Claims

1. A vision testing stick, comprising:

a rod body (1) having an internal chamber (16);

a light source (5) disposed in the interior chamber (16);

a battery accommodating cavity (8) arranged in the inner cavity (16), wherein a battery (15) for supplying power to the light source (5) is arranged in the battery accommodating cavity (8);

a rear cover (2) provided with a spring (3) and a button (4), wherein the spring (3) is connected with the button (4), and pressing the button (4) can drive the spring (3) to move so as to contact the battery (15), so that the light source (5) emits light, and the rear cover (2) is arranged at the tail end of the inner cavity (16);

the aperture adjusting device is provided with a plurality of aperture blades (6), the aperture blades (6) are spliced to form an aperture hole (17), the aperture hole (17) can be used for allowing light of the light source (5) to pass through, and the aperture adjusting device is arranged at the front end of the inner cavity (16);

the rotating device is provided with a telescopic rod and a swivel (7), one end of the telescopic rod is connected with the aperture adjusting device, the other end of the telescopic rod is movably connected with the swivel (7), and the telescopic rod can be driven to be stretched or shortened by rotating the swivel (7), so that the aperture hole (17) is narrowed or enlarged.

2. The vision inspection rod according to claim 1, characterized in that a first gear (18) is arranged in the middle of the swivel, the telescopic rod is provided with a first rod body (9) and a second rod body (10), one end of the first rod body (9) is connected with the aperture blade (6), the other end of the first rod body (9) is connected with one end of the second rod body (10), a second gear (19) is arranged on the outer surface of the other end of the second rod body (10), the first gear (18) is meshed with the second gear (19), one end of the first rod body (9) is provided with a first external thread, one end of the second rod body (10) is provided with a first internal thread, and the first external thread is matched with the first internal thread.

3. A vision inspection wand according to claim 1, characterized in that the wand body (1) further comprises a rubber wand cap (11), the rubber wand cap (11) being provided on the outer wall of the front end of the wand body (1), the rubber wand cap (11) having a through hole which matches the wand body (1).

4. The vision inspection wand according to claim 1, characterized in that the wand body (1) further comprises a glass sheet (12), the glass sheet (12) being arranged at a port of the front end of the wand body (1).

5. A vision inspection wand according to claim 1, characterized in that the wand body (1) further has a number of raised portions (13), the number of raised portions (13) being evenly arranged on the outer wall of the distal end of the wand body (1).

6. A vision inspection wand according to claim 1, characterized in that the end of the wand body (1) is provided with a second internal thread, the outer wall of the rear cap (2) being provided with a second external thread, the second internal thread co-operating with the second external thread.

7. The vision inspection wand according to claim 1, characterized in that the rear cover (2) further comprises a circular hole (14), the circular hole (14) being welded perpendicularly to the rear cover (2).

8. Vision inspection wand according to claim 1, characterized in that the light source (5) is an LED lamp.

9. Vision inspection bar according to claim 1, characterized in that the shape of several of the aperture blades (6) is arc-shaped.