CN216060468U

CN216060468U - Standard C-shaped logarithmic visual chart capable of converting C-shaped direction

Info

Publication number: CN216060468U
Application number: CN202121352545.0U
Authority: CN
Inventors: 薛菲; 戴榕娟; 吴琼; 张艳
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2022-03-18
Anticipated expiration: 2031-06-17

Abstract

The application discloses can convert standard C shape logarithmic vision table of C word direction, including slider, rotary disk, electric cabinet, LED lamp plate, supporting leg, bottom plate, universal wheel and handle. This application is through the inside rigid coupling with first wind-up roll in the outer wall surface of first bull stick, thereby change the visual chart body with the inside rigid coupling of second wind-up roll in the outer wall surface of second bull stick through winding the outer wall surface of visual chart body inner wall at first wind-up roll and second wind-up roll when starting positive and negative motor, make the C word direction on visual chart body surface change, rotate the wheel through the end that connects conveyer's inner wall transmission in first wind-up roll and second bull stick, thereby be convenient for synchronous rotation between first wind-up roll and the second wind-up roll, through the base rigid coupling with the LED lamp plate in the inside top surface of framework, imbed the inner wall of framework with the wall of reflector, thereby play the reflection of light effect through the reflector when starting the LED lamp plate, make the C word on visual chart body surface show clearly.

Description

Standard C-shaped logarithmic visual chart capable of converting C-shaped direction

Technical Field

The application relates to the technical field of visual acuity test, in particular to a standard C-shaped logarithmic visual chart capable of converting the direction of a C character.

Background

The visual acuity test of people by adopting the visual acuity chart is the current basic mode, the distinguishing symbols for testing the visual acuity of 2.0 to 0.1 are recorded on the current standard logarithmic visual acuity chart, and although the directionality of the distinguishing symbols on different existing standard logarithmic visual acuity charts can be different, only one fixed standard logarithmic visual acuity chart is usually arranged in one testing place.

The existing examination mode is basically the same, which can pass the visual examination by reciting the character direction of the visual chart used by some people who want to improve the self-examination vision or who want to pass the visual examination, so that the accuracy of the visual examination cannot be guaranteed. Therefore, a standard C-shape logarithmic visual chart capable of converting the direction of C words is proposed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In the embodiment, a standard C-shaped logarithmic visual acuity chart capable of converting the direction of C words is provided for solving the problem of visual acuity test in the prior art.

According to one aspect of the application, a standard C-shaped logarithmic visual chart capable of converting the direction of a C word is provided, and comprises a workbench, a sliding chute, clamping blocks, anti-skidding pieces, threaded rods, sliding blocks, a rotating disk, an electric cabinet, supporting legs, a bottom plate, universal wheels, a lifting handle and an inspection mechanism;

the inspection mechanism comprises a conveying belt, a frame body, a first rotating rod, a first winding roller, a positive and negative motor, a visual chart body, a reflector, a second rotating rod, a positive and negative motor and an LED lamp plate, wherein the wall surface of the first rotating rod is rotatably connected to the inner wall of the frame body, the end part of the first rotating rod is embedded into the positive and negative motor, a base of the positive and negative motor is fixedly connected to the side wall surface of the frame body, the inner part of the first winding roller is fixedly connected to the outer wall surface of the first rotating rod, the wall surface of the second rotating rod is rotatably connected to the inner wall of the frame body, the outer wall surface of the second rotating rod is fixedly connected to the inner part of the second winding roller, the wall surface of the reflector is embedded into the frame body, the inner wall of the conveying belt is in transmission connection with the rotating wheels at the end parts of the first winding roller and the second winding roller, the base of the LED lamp plate is fixedly connected to the inner top surface of the frame body, and the bottom surface of the frame body is tightly attached to the top surface of the workbench, the inner wall winding of visual chart body is on the outer wall surface of first wind-up roll and second wind-up roll.

Furthermore, the end part of the handle is fixedly connected to the surface of the side wall of the frame body.

Furthermore, the top end of the supporting leg is fixedly connected to the corner of the bottom surface of the workbench, and the bottom end of the supporting leg is fixedly connected to the corner of the top surface of the bottom plate.

Furthermore, the top end of the universal wheel is fixedly connected to the corner of the bottom surface of the bottom plate.

Furthermore, the base of the electric cabinet is fixedly connected to the top surface of the workbench.

Furthermore, the inner wall surface of the clamping block is provided with an anti-skid sheet, the bottom surface of the clamping block is fixedly connected to the top surface of the sliding block, and the inner wall surface of the anti-skid sheet is tightly attached to the side wall surface of the frame body.

Further, the top surface of workstation sets up the spout, the outer wall surface sliding connection of slider is in the inside of spout.

Furthermore, the outer wall surface of the threaded rod is in threaded connection with the inside of the sliding block, the end part of the threaded rod is rotatably connected with the inside of the workbench, and the inner wall of the rotating disk is fixedly connected with the end part of the threaded rod.

Through the embodiment of the application, the checking mechanism is adopted, the problem of changing the C character direction of the C-shaped visual chart is solved, and the effect of changing the C character direction of the visual chart is achieved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic perspective view of one embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of one embodiment of the present application;

fig. 3 is an overall front view of an embodiment of the present application.

In the figure: 1. the utility model provides a visual chart, the workstation, 2, the spout, 3, press from both sides the dress piece, 4, antiskid piece, 5, the threaded rod, 6, conveyer, 7, the framework, 8, first bull stick, 9, first wind-up roll, 10, positive and negative motor, 11, the visual chart body, 12, the reflector, 13, the second bull stick, 14, second wind-up roll, 15, the slider, 16, the rotary disk, 17, the electric cabinet, 18, the LED lamp plate, 19, the supporting leg, 20, the bottom plate, 21, the universal wheel, 22, the handle.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. 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 application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

The C-shaped eye chart in the present embodiment can be applied to various spectacle frames, for example, the following spectacle frame is provided in the present embodiment, and the C-shaped eye chart in the present embodiment can be used for checking the following spectacle frame checking.

The spectacle frame comprises spectacle legs, a spectacle frame and pull rods, wherein spectacle lenses are fixedly connected inside the spectacle frame, the spectacle legs are linear, one side of each spectacle leg is provided with a chamfer bend, one side of the spectacle frame is fixedly connected with a nose bridge frame, the fittings of the spectacle frame can be connected by arranging the nose bridge frame, the normal and stable operation of the device can be better ensured, the practicability of the device is better increased, one side of the front surface of the spectacle frame and the lower part of the nose bridge frame are fixedly connected with nose brackets, the fitting degree of spectacles and the nose can be increased when a user wears the spectacles by arranging the nose brackets, the stability of the device is better increased, the number of the nose brackets is two, the anti-slip layers are arranged on the opposite sides of the two nose brackets, one side of the spectacle frame, which is far away from the nose bridge frame, is fixedly connected with a hinge, and the spectacle legs can rotate around a shaft by arranging the hinge, the glasses case has the advantages that the convenience of a user in wearing and taking off glasses can be better increased, the practicability of the device is better increased, the user can conveniently store the glasses in the glasses case when the glasses are not used, one side of the hinge, which is far away from the nose bridge frame, is fixedly connected with the glasses legs, the top of the glasses legs, which is far away from the hinge, is provided with a groove, the number of the groove is not less than one, the inner cavity of the groove is movably connected with the pull rod, the surface of the glasses legs is movably connected with the movable sleeve, the bottom of the movable sleeve is fixedly connected with the silica gel anti-slip strip, the top of the movable sleeve is provided with a through hole, the pull rod penetrates through the through hole and extends into the through hole, the surface of the pull rod is sleeved with a spring, the top of the spring is fixedly connected with the movable sleeve, the bottom of the spring is fixedly connected with the glasses legs, the top of the pull rod is fixedly connected with a connecting body, the movable sleeve, the glasses legs, the pull rod and the silica gel anti-slip strip are the same in color, the shape of the connector is a cylinder, the surface of the connector is provided with anti-slip lines, the maximum angle at which the hinge can rotate is a degree, the distance between the movable sleeve and the glasses frame can be adjusted according to the face of a user when the glasses are worn by matching the glasses legs, the connector, the spring, the groove, the movable sleeve, the silica gel anti-slip strip and the pull rod, the silica gel anti-slip strip is better attached to ears in a tight fit manner, the falling off of the user when the glasses are worn by the user is better prevented, the device is better added, when the glasses are used, the glasses legs are firstly rotated towards the outer side when the glasses are worn, the glasses legs rotate around shafts by the hinge belt, the glasses legs are unfolded, the glasses are firstly tried on the face, when the silica gel anti-slip strip cannot be attached to the ears in a tight fit manner, the connector is pulled upwards, the pull rod is driven to slide, the pull rod leaves the inner chamber of recess, to the left side slip movable sleeve simultaneously, make the silica gel antislip strip closely laminate with the ear, loosen the connector, because the elastic potential energy has been stored to the spring, the spring drives pull rod and recess joint, realize the fixed with the movable sleeve, then wear glasses, owing to set up the nose bracket, can increase the area of contact of glasses and nose, can be better prevent that glasses from sliding, when needs take off glasses, both hands grip the glasses leg, take off glasses, then inwards fold the glasses leg, realize accomodating of glasses.

Of course, the embodiment can also be used for visual acuity test of other structures of visual acuity charts. Here, a standard C-shaped logarithmic visual acuity chart capable of converting the direction of the C-word according to the embodiment of the present application is described below.

Referring to fig. 1-3, a standard C-shaped logarithmic visual chart capable of converting the direction of a C-letter comprises a workbench 1, a chute 2, a clamping block 3, an anti-skid sheet 4, a threaded rod 5, a slide block 15, a rotating disk 16, an electric cabinet 17, supporting legs 19, a bottom plate 20, universal wheels 21, a lifting handle 22 and an inspection mechanism;

the inspection mechanism comprises a workbench 1, a conveyor belt 6, a frame 7, a first rotating rod 8, a first winding roller 9, a positive and negative motor 10, a visual chart body 11, a reflective mirror 12, a second rotating rod 13, a second winding roller 14 and an LED lamp panel 18, wherein the wall surface of the first rotating rod 8 is rotatably connected to the inner wall of the frame 7, the end part of the first rotating rod 8 is embedded into the positive and negative motor 10, a base of the positive and negative motor 10 is fixedly connected to the side wall surface of the frame 7, the inner part of the first winding roller 9 is fixedly connected to the outer wall surface of the first rotating rod 8, the wall surface of the second rotating rod 13 is rotatably connected to the inner wall of the frame 7, the outer wall surface of the second rotating rod 13 is fixedly connected to the inner part of the second winding roller 14, the wall surface of the reflective mirror 12 is embedded into the frame 7, the inner wall of the conveyor belt 6 is in transmission connection with the end parts of the first winding roller 9 and the second winding roller 14, the base of the LED lamp panel 18 is fixedly connected to the inner top surface of the frame body 7, the bottom surface of the frame body 7 is tightly attached to the top surface of the workbench 1, the inner wall of the visual chart body 11 is wound on the outer wall surfaces of the first winding roller 9 and the second winding roller 14, the base of the positive and negative motor 10 is fixedly connected to the side wall surface of the frame body 7, the first rotating rod 8 and the second winding roller 14 are rotatably connected to the inner part of the frame body 7, the inner part of the first winding roller 9 is fixedly connected to the outer wall surface of the first rotating rod 8, the inner part of the second winding roller 14 is fixedly connected to the outer wall surface of the second rotating rod 13, the visual chart body 11 is replaced when the positive and negative motor 10 is started by winding the inner wall of the visual chart body 11 on the outer wall surfaces of the first winding roller 9 and the second winding roller 14, so that the C-shaped direction on the surface of the visual chart body 11 is replaced, and the inner wall of the conveying belt 6 is in transmission connection with the end rotating wheels of the first winding roller 9 and the second rotating rod 13, therefore, the first winding roller 9 and the second winding roller 14 can rotate synchronously, the base of the LED lamp panel 18 is fixedly connected to the inner top surface of the frame body 7, the wall surface of the reflective mirror 12 is embedded into the inner wall of the frame body 7, and when the LED lamp panel 18 is started, the reflective mirror 12 plays a role in reflecting light, so that the C-shaped characters on the surface of the visual chart body 11 are clearly displayed;

the end part of the handle 22 is fixedly connected with the side wall surface of the frame body 7, the carrying and the installation are convenient, the top ends of the supporting legs 19 are fixedly connected with the bottom surface corners of the workbench 1, the bottom ends of the supporting legs 19 are fixedly connected with the top surface corners of the bottom plate 20, the top ends of the universal wheels 21 are fixedly connected with the bottom surface corners of the bottom plate 20, the moving device is convenient for workers to move, the base of the electric cabinet 17 is fixedly connected with the top surface of the workbench 1, the inner wall surface of the clamping block 3 is provided with an antiskid sheet 4, the bottom surface of the clamping block 3 is fixedly connected with the top surface of the sliding block 15, the inner wall surface of the antiskid sheet 4 is tightly attached to the side wall surface of the frame body 7, the side wall surface of the frame body 7 is prevented from loosening in the clamping process through the antiskid sheet 4, the top surface of the workbench 1 is provided with a sliding groove 2, the outer wall surface of the sliding block 15 is slidably connected with the inside of the sliding groove 2, the outer wall surface of the sliding block 5 is in threaded connection with the inside of the sliding block 15, the end part of the threaded rod 5 is rotatably connected with the inside of the workbench 1, the inner wall of the rotating disk 16 is fixedly connected with the end part of the threaded rod 5, and when the rotating disk 16 is rotated, the clamping blocks 3 are close to each other, so that the anti-skid sheets 4 clamp the frame body 7, and the frame body 7 is convenient to mount and dismount.

When the utility model is used, the electrical elements appearing in the application are externally connected with a power supply and a control switch when in use, firstly, the inner part of a first winding roller 9 is fixedly connected to the outer wall surface of a first rotating rod 8, the inner part of a second winding roller 14 is fixedly connected to the outer wall surface of a second rotating rod 13, the inner wall of a visual chart body 11 is wound on the outer wall surfaces of the first winding roller 9 and the second winding roller 14 when a positive and negative motor 10 is started, so that the visual chart body 11 is replaced in the C-shaped direction of the surface of the visual chart body 11, the inner wall of a conveying belt 6 is in transmission connection with end rotating wheels of the first winding roller 9 and the second rotating rod 13, thereby facilitating the synchronous rotation between the first winding roller 9 and the second winding roller 14, the base of an LED lamp panel 18 is fixedly connected to the inner top surface of a frame body 7, the wall surface of a reflector 12 is embedded into the inner wall of the frame body 7, when the LED lamp panel 18 is started, the reflecting effect is achieved through the reflector 12, so that the C-shaped characters on the surface of the visual chart body 11 are clearly displayed, the end part of the handle 22 is fixedly connected to the side wall surface of the frame body 7, so that the frame body 7 is conveniently installed on the top surface of the workbench 1, the sliding groove 2 is arranged on the top surface of the workbench 1, the outer wall surface of the sliding block 15 is in sliding connection with the inner part of the sliding groove 2, the bottom surface of the clamping block 3 is fixedly connected to the top surface of the sliding block 15, the wall surface of the rotating disc 16 is in threaded connection with the inner part of the sliding block 15, the clamping blocks 3 are close to each other through rotating the rotating disc 16 so as to clamp the frame body 7, the stability of the frame body 7 on the top surface of the workbench 1 is improved, the anti-skid sheets 4 are arranged on the inner wall surface of the clamping blocks 3, the inner walls of the anti-skid sheets 4 are tightly attached to the side wall surface of the frame body 7, so that the looseness of the frame body 7 on the top surface of the workbench 1 is prevented, increase its fastness, through with the top rigid coupling of supporting leg 19 in the bottom surface corner of workstation 1, with the bottom rigid coupling of supporting leg 19 in the top surface corner of bottom plate 20, through the top rigid coupling with universal wheel 21 in the bottom surface corner of bottom plate 20 to the mobile device of being convenient for.

The application has the advantages that:

1. through the inside rigid coupling with first wind-up roll in the outer wall surface of first bull stick, thereby change the visual chart body with the inside rigid coupling of second wind-up roll in the outer wall surface of second bull stick through winding the outer wall surface of visual chart body inner wall at first wind-up roll and second wind-up roll when starting positive and negative motor, make the C word direction on visual chart body surface change, rotate the wheel through the inner wall transmission with conveyer connected in the tip of first wind-up roll and second bull stick, thereby be convenient for synchronous rotation between first wind-up roll and the second wind-up roll, through the base rigid coupling with the LED lamp plate in the inside top surface of framework, imbed the inner wall of framework with the wall of reflector, thereby play the reflex action through the reflector when starting LED lamp plate, make the C word on visual chart body surface show clearly.

2. Through the tip rigid coupling with the handle in the lateral wall surface of framework, thereby be convenient for install the framework at the top surface of workstation, through setting up the spout at the top surface of workstation, with the inside of the outer wall surface sliding connection spout of slider, the bottom surface rigid coupling that will press from both sides the dress piece in the top surface of slider, with the wall threaded connection of rotary disk in the inside of slider, thereby make to press from both sides the dress piece and be close to each other and press from both sides the dress to the framework through rotating the rotary disk, increase the stability of framework at the top surface of workstation, through setting up the anti-skidding piece at the inner wall surface of pressing from both sides the dress piece, the lateral wall surface of the framework of closely laminating of the inner wall of anti-skidding piece, thereby prevent that the framework is not hard up at the top surface of workstation, increase its fastness.

3. Through the top rigid coupling with the supporting leg in the bottom surface corner of workstation, with the bottom rigid coupling of supporting leg in the top surface corner of bottom plate, through the top rigid coupling with the universal wheel in the bottom surface corner of bottom plate to the mobile device of being convenient for.

It is well within the skill of those in the art to implement, without undue experimentation, the present application is not directed to software and process improvements, as they relate to circuits and electronic components and modules.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A standard C-shape logarithmic visual chart capable of converting the direction of C-words, characterized by: comprises a workbench (1), a sliding chute (2), clamping blocks (3), anti-skidding sheets (4), threaded rods (5), sliding blocks (15), a rotating disk (16), an electric cabinet (17), supporting legs (19), a bottom plate (20), universal wheels (21), a lifting handle (22) and an inspection mechanism;

the inspection mechanism comprises a conveying belt (6), a frame body (7), a first rotating rod (8), a first winding roller (9), a positive and negative motor (10), a visual chart body (11), a reflective mirror (12), a second rotating rod (13), a second winding roller (14) and an LED lamp panel (18), wherein the wall surface of the first rotating rod (8) is rotatably connected to the inner wall of the frame body (7), the end part of the first rotating rod (8) is embedded into the positive and negative motor (10), a base of the positive and negative motor (10) is fixedly connected to the side wall surface of the frame body (7), the inner part of the first winding roller (9) is fixedly connected to the outer wall surface of the first rotating rod (8), the wall surface of the second rotating rod (13) is rotatably connected to the inner wall of the frame body (7), the outer wall surface of the second rotating rod (13) is fixedly connected to the inner wall of the second winding roller (14), and the wall surface of the reflective mirror (12) is embedded into the frame body (7), the inner wall transmission of conveyer (6) is connected in first wind-up roll (9) and second wind-up roll (14) tip runner, the base rigid coupling of LED lamp plate (18) is in the inside top surface of framework (7), the bottom surface of framework (7) is close to the top surface in workstation (1), the inner wall winding of visual chart body (11) is on the outer wall surface of first wind-up roll (9) and second wind-up roll (14).

2. A standard C-shape logarithmic visual acuity chart for converting the direction of C-words as defined in claim 1, wherein: the end part of the handle (22) is fixedly connected with the surface of the side wall of the frame body (7).

3. A standard C-shape logarithmic visual acuity chart for converting the direction of C-words as defined in claim 1, wherein: the top of supporting leg (19) rigid coupling in the bottom surface corner of workstation (1), the bottom rigid coupling of supporting leg (19) in the top surface corner of bottom plate (20).

4. A standard C-shape logarithmic visual acuity chart for converting the direction of C-words as defined in claim 1, wherein: the top end of the universal wheel (21) is fixedly connected to the corner of the bottom surface of the bottom plate (20).

5. A standard C-shape logarithmic visual acuity chart for converting the direction of C-words as defined in claim 1, wherein: and the base of the electric cabinet (17) is fixedly connected to the top surface of the workbench (1).

6. A standard C-shape logarithmic visual acuity chart for converting the direction of C-words as defined in claim 1, wherein: the inner wall surface of the clamping block (3) is provided with an anti-skidding sheet (4), the bottom surface of the clamping block (3) is fixedly connected to the top surface of the sliding block (15), and the inner wall surface of the anti-skidding sheet (4) is tightly attached to the side wall surface of the frame body (7).

7. A standard C-shape logarithmic visual acuity chart for converting the direction of C-words as defined in claim 1, wherein: the top surface of workstation (1) sets up spout (2), the outer wall surface sliding connection of slider (15) is in the inside of spout (2).

8. A standard C-shape logarithmic visual acuity chart for converting the direction of C-words as defined in claim 1, wherein: the outer wall surface threaded connection slider (15) of threaded rod (5) inside, the inside of the tip of threaded rod (5) rotation connection workstation (1), the inner wall rigid coupling of rotary disk (16) is in the tip of threaded rod (5).