Eyeball model for demonstrating eye axis change

Abstract

The utility model belongs to the technical field of eyeball models, and particularly relates to an eyeball model for demonstrating eye axis change, which comprises an eyeball model body and further comprises a base, a sliding column is slidably mounted at the top of the base, the eyeball model body is fixedly mounted at the top of the base and located on the right side of the sliding column, and a lens is mounted at the top of the sliding column in an inserted manner; the fixing assembly is located in the sliding column and used for fixing the position of the sliding column; and the sliding plate is installed at one end of the base in a sliding mode, the sliding plate is located on the left side of the sliding column, one end of the sliding plate penetrates through the base, extends to the outside and is fixedly provided with a connecting block, and the top of the connecting block is fixedly provided with a fixing plate. And meanwhile, the reference object is wiped, so that dust is prevented from being attached to the two sides of the reference object, and the operation is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of eyeball models, and in particular relates to an eyeball model for demonstrating changes in eye axis. Background Art

[0002] The eyeball model demonstrating eye lens adjustment is a teaching tool used to simulate and demonstrate how the lens in the eye changes shape according to the distance of the observed object, thereby adjusting the refractive power of the eye to ensure that the object can be clearly imaged on the retina.

[0003] Most eye models have some drawbacks. For example, they are fixed in position with the lens and reference object, making them incapable of demonstrating how lenses at different distances observe reference objects at different distances. Furthermore, if the reference object is left outside for extended periods, it may become covered in dust, affecting observation. To address these issues, we propose an eye model that demonstrates the axial length of the eye. Utility Model Content

[0004] The purpose of the present invention is to provide an eyeball model for demonstrating changes in the eye axis, so as to solve the problems raised in the above-mentioned background technology.

[0005] In view of this, the present invention provides an eyeball model for demonstrating changes in the eye axis, comprising an eyeball model body and further comprising:

[0006] A base, a sliding column is slidably mounted on the top of the base, an eyeball model body is fixedly mounted on the top of the base and on the right side of the sliding column, and a lens is plugged and mounted on the top of the sliding column;

[0007] A fixing assembly, the fixing assembly being located inside the sliding column and being used to fix the position of the sliding column;

[0008] A sliding plate, wherein the sliding plate is slidably mounted on one end of the base, and the sliding plate is located on the left side of the sliding column, one end of the sliding plate extends through the base to the outside and is fixedly mounted with a connecting block, a fixing plate is fixedly mounted on the top of the connecting block, a cleaning groove is opened in the fixing plate, a reference object is fixedly mounted in the cleaning groove, a cleaning rod in contact with the reference object is slidably mounted in the cleaning groove, and a plurality of springs fixed to the inner wall of the cleaning groove are fixedly mounted on the bottom of the cleaning rod;

[0009] Two groups of limiting components are both located in the sliding plate and are used to limit the sliding of the sliding plate.

[0010] In this technical solution, when the eyeball model is in use, the user can move the position of the lens inside the eyeball model and then observe the reference object through the lens to demonstrate the changes in the eye axis under different glasses, making it easier for people to understand the changes in the eye axis.

[0011] When the position of the reference object needs to be adjusted, the user pulls the connecting block to move away from the base. At the same time, the connecting block drives the eye model body, the fixed plate, the reference object and the sliding plate to move away from the base. The position of the sliding plate can be fixed by the set limit assembly to ensure that the reference object can be moved to a suitable position and the position of the reference object will not change when viewed, which is convenient for personnel to demonstrate the effect of different distances of the reference object. When the distance of the reference object changes, the length of the eye axis changes, and different imaging results can be displayed, which is convenient for staff to demonstrate the changes in vision under different changes in the eye axis.

[0012] When the position of the lens needs to be adjusted, the user can pull the sliding column to slide through the provided fixing component, and the sliding column drives the lens to move. When the lens moves to the appropriate position, the position of the sliding column can be fixed by the provided fixing component. The fixed position of the sliding column further fixes the position of the lens, making it convenient for personnel to demonstrate the effects of different lens distances;

[0013] When it is necessary to clean the dust on the reference object, first pull the cleaning rod downward, the cleaning rod slides downward and wipes both sides of the reference object, so that there is no dust on the reference object, and at the same time, several springs are squeezed and contracted. When the cleaning rod slides to the appropriate position, the user releases the cleaning rod. Under the action of the rebound force of several springs, the cleaning rod will slide upward and wipe the reference object again, ensuring that there is no dust on both sides of the reference object and the operation is convenient.

[0014] In the above technical solution, further, the fixing assembly includes:

[0015] Sliding groove 1, the sliding groove 1 is provided in the sliding column, a limiting rod is slidably installed in the sliding groove 1, and a plurality of springs 1 fixed to the inner wall of the sliding groove 1 are fixedly installed on the top of the limiting rod;

[0016] A plurality of limit slots are provided in the base and are located at the bottom of the sliding column. The lower end of the limit rod passes through the sliding slot and extends into the corresponding limit slot. The lower end of the limit rod is plugged into the limit slot.

[0017] In this technical solution, when the position of the lens needs to be adjusted, the user pulls the limit rod to slide upward, and at the same time, several springs are squeezed and contracted. When the lower end of the limit rod is disengaged from the corresponding limit groove, the user can pull the sliding column to slide, and the sliding column drives the lens to move. When the lens moves to the appropriate position, the limit rod is released. Under the action of the rebound force of several springs, the limit rod slides downward and is inserted into the corresponding limit groove, which can fix the position of the sliding column. The fixed position of the sliding column further fixes the position of the lens, which is convenient for personnel to demonstrate the effects of different distances of the lens.

[0018] In the above technical solution, further, the limiting component includes:

[0019] A second sliding groove is provided in the sliding plate, a limit block is slidably installed in the second sliding groove, and one end of each limit block is fixedly installed with a second spring fixed to the inner wall of the second sliding groove;

[0020] A plurality of grooves are provided in the base, and the plurality of grooves are located on one side of the sliding plate. The other end of the limit block passes through the second sliding groove and extends into the corresponding groove. The other end of the limit block is plugged into the groove.

[0021] In this technical solution, when the position of the reference object needs to be adjusted, the user pulls the connecting block to move away from the base, and at the same time, the connecting block drives the eyeball model body, the fixed plate, the reference object and the sliding plate to move away from the base. At the same time, the corresponding two limit blocks are squeezed by the grooves and slide and approach each other. At the same time, the two springs are squeezed and contracted, and then the ends of the two limit blocks that are away from each other are disengaged from the corresponding grooves. When the reference object is moved to a suitable position, the two limit blocks are no longer squeezed. Under the action of the rebound force of the two springs, the two limit blocks slide and move away from each other. Then, the two limit blocks are respectively inserted into the corresponding grooves, which can fix the position of the sliding plate and ensure that the reference object can be moved to a suitable position. The position of the reference object will not change when viewed, which is convenient for personnel to demonstrate the effects of different distances of the reference object. As the distance of the reference object changes, the length of the eye axis changes, and different imaging results can be displayed, which is convenient for staff to demonstrate changes in vision under different changes in the eye axis.

[0022] In the above technical solution, further, pulleys are symmetrically fixedly installed on the bottom of the connecting block, fixed columns are fixedly installed on the bottom of the base and near the four corners, and anti-slip rubber pads are fixedly installed on the bottom of the fixed columns.

[0023] In this technical solution, the pulley is provided to ensure smooth displacement of the connecting block, and the fixed column and anti-slip rubber pad are provided to ensure that the base will not be displaced during use.

[0024] In the above technical solution, further, a wiping sponge in contact with a reference object is symmetrically fixedly mounted on the inner wall of the cleaning rod.

[0025] In this technical solution, the reference object can be wiped by the provided wiping sponge.

[0026] In the above technical solution, further, the cross-section of the end of the limit block away from the spring 2 is arc-shaped, and the cross-section of the groove is also arc-shaped.

[0027] In this technical solution, it is ensured that the two limiting blocks are squeezed by the grooves to slide and approach each other.

[0028] In the above technical solution, further, the reference object, the lens, and the crystal in the eyeball model body are located on the same horizontal line.

[0029] In this technical solution, it is ensured that the overall device has a good demonstration effect when in use and no errors will occur.

[0030] In the above technical solution, further, the plurality of limiting grooves are distributed at equal intervals, and the plurality of grooves are distributed at equal intervals.

[0031] In this technical solution, it is ensured that the reference object can be moved to a suitable position and fixed, and it is ensured that the lens can be moved to a suitable position and fixed.

[0032] The beneficial effects of the utility model are:

[0033] 1. This eye model, which demonstrates the change in the eye's axial length, pulls the connecting block away from the base. Simultaneously, the connecting block drives the eye model, fixed plate, reference object, and sliding plate away from the base. A limiter assembly secures the sliding plate, ensuring the reference object can be moved to the appropriate position.

[0034] Through the set fixing component, the user can pull the sliding column to slide, and the sliding column drives the lens to move. When the lens moves to the appropriate position, the position of the sliding column can be fixed through the set fixing component. The fixed position of the sliding column further fixes the position of the lens, making it convenient for personnel to demonstrate the effects of different distances of the lens.

[0035] 2. The eyeball model that demonstrates the change of the eye axis pulls down the cleaning rod, which slides downward and wipes both sides of the reference object to prevent dust from sticking to the reference object. At the same time, several springs are squeezed and contracted. When the cleaning rod slides to the appropriate position, the user releases the cleaning rod. Under the action of the rebound force of several springs, the cleaning rod slides upward and wipes the reference object again to ensure that there is no dust on both sides of the reference object. The operation is convenient.

[0036] 3. The eyeball model for demonstrating changes in the eye's axial length, when the eyeball model body is in use, the user pulls the connecting block to move away from the base, and at the same time the connecting block drives the eyeball model body, the fixed plate, the reference object and the sliding plate to move away from the base. The position of the sliding plate can be fixed by the set limit assembly to ensure that the reference object can be moved to a suitable position and the position of the reference object will not change when viewed, which is convenient for personnel to demonstrate the effects of different distances of the reference object. As the distance of the reference object changes, the length of the axial length changes, and different imaging results can be displayed, which is convenient for staff to demonstrate changes in vision under different changes in the axial length. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0038] Figure 2 This is one of the schematic diagrams of the cross-sectional structure of the base of the present utility model;

[0039] Figure 3 This utility model Figure 2 A schematic diagram of the structure enlarged in the middle;

[0040] Figure 4 This is a schematic diagram of the cross-sectional structure of the sliding column of the utility model;

[0041] Figure 5 This is the second schematic diagram of the cross-sectional structure of the base of the present utility model;

[0042] Figure 6 This is a schematic diagram of the cross-sectional structure of the sliding plate of the present utility model;

[0043] Figure 7 This is a schematic diagram of the cross-sectional structure of the fixed plate of the present utility model;

[0044] Figure 8 It is a schematic diagram of the partial explosion structure of the utility model.

[0045] The marks in the figure are:

[0046] 1. Base; 2. Eyeball model body; 3. Sliding column; 4. Lens; 5. Sliding plate; 6. Connecting block; 7. Fixed plate; 8. Cleaning slot; 9. Reference object; 10. Cleaning rod; 11. Sliding slot 1; 12. Limit rod; 13. Spring 1; 14. Limit slot; 15. Sliding slot 2; 16. Limit block; 17. Spring 2; 18. Groove; 19. Spring 3; 20. Pulley; 21. Fixed column. DETAILED DESCRIPTION

[0047] The following is combined with Figure 1 - Figure 8 This application is described in further detail.

[0048] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," and "horizontal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0049] Example 1:

[0050] This embodiment provides an eyeball model for demonstrating changes in the eye axis, including an eyeball model body 2, and further comprising:

[0051] Base 1, a sliding column 3 is slidably installed on the top of the base 1, an eyeball model body 2 is fixedly installed on the top of the base 1 and on the right side of the sliding column 3, and a lens 4 is plugged and installed on the top of the sliding column 3;

[0052] A fixing assembly is located inside the sliding column 3 and is used to fix the position of the sliding column 3;

[0053] A sliding plate 5 is slidably mounted on one end of the base 1, and the sliding plate 5 is located on the left side of the sliding column 3. One end of the sliding plate 5 extends through the base 1 to the outside and is fixedly mounted with a connecting block 6. A fixing plate 7 is fixedly mounted on the top of the connecting block 6. A cleaning groove 8 is opened in the fixing plate 7, and a reference object 9 is fixedly mounted in the cleaning groove 8. A cleaning rod 10 in contact with the reference object 9 is slidably mounted in the cleaning groove 8. A plurality of springs 19 fixed to the bottom of the cleaning rod 10 are fixedly mounted on the inner wall of the cleaning groove 8.

[0054] Two sets of limiting components are both located in the sliding plate 5 and are used to limit the sliding of the sliding plate 5 .

[0055] Among them, when the position of the reference object 9 needs to be adjusted, the user pulls the connecting block 6 to move away from the base 1, and at the same time, the connecting block 6 drives the eye model body 2, the fixed plate 7, the reference object 9 and the sliding plate 5 to move away from the base 1. The position of the sliding plate 5 can be fixed by the provided limit assembly to ensure that the reference object 9 can be moved to a suitable position, and the position of the reference object 9 will not change during viewing, which is convenient for personnel to demonstrate the effect of different distances of the reference object 9. When the distance of the reference object 9 changes, the length of the eye axis changes, and different imaging results can be displayed, which is convenient for staff to demonstrate the changes in vision under different changes in the eye axis.

[0056] When the position of the lens 4 needs to be adjusted, the user can pull the sliding column 3 to slide through the provided fixing assembly, and the sliding column 3 drives the lens 4 to move. When the lens 4 moves to a suitable position, the position of the sliding column 3 can be fixed by the provided fixing assembly. The fixed position of the sliding column 3 further fixes the position of the lens 4, making it convenient for personnel to demonstrate the effects of different distances of the lens 4;

[0057] When the dust on the reference object 9 needs to be cleaned, first pull the cleaning rod 10 downward, the cleaning rod 10 slides downward and wipes both sides of the reference object 9, so that there is no dust on the reference object 9, and at the same time, the springs three 19 are squeezed and contracted. When the cleaning rod 10 slides to a suitable position, the user releases the cleaning rod 10. Under the action of the rebound force of the springs three 19, the cleaning rod 10 will slide upward and wipe the reference object 9 again, ensuring that there is no dust on both sides of the reference object 9 and the operation is convenient.

[0058] In this embodiment, the fixing component includes:

[0059] A sliding groove 11 is provided in the sliding column 3. A limit rod 12 is slidably installed in the sliding groove 11. A plurality of springs 13 are fixed to the top of the limit rod 12 and fixed to the inner wall of the sliding groove 11.

[0060] A plurality of limiting grooves 14 are provided in the base 1 and are located at the bottom of the sliding column 3. The lower end of the limiting rod 12 passes through the sliding groove 11 and extends into the corresponding limiting groove 14. The lower end of the limiting rod 12 is plugged into the limiting groove 14.

[0061] Among them, when the position of the lens 4 needs to be adjusted, the user pulls the limit rod 12 to slide upward, and at the same time, several springs 13 are squeezed and contracted. When the lower end of the limit rod 12 is disengaged from the corresponding limit groove 14, the user can pull the sliding column 3 to slide, and the sliding column 3 drives the lens 4 to move. When the lens 4 moves to a suitable position, the limit rod 12 is released. Under the action of the rebound force of several springs 13, the limit rod 12 slides downward and is inserted into the corresponding limit groove 14, which can fix the position of the sliding column 3. The fixed position of the sliding column 3 further fixes the position of the lens 4, which is convenient for personnel to demonstrate the effects of different distances of the lens 4.

[0062] In this embodiment, the limiting component includes:

[0063] The second sliding groove 15 is provided in the sliding plate 5. A limit block 16 is slidably installed in the second sliding groove 15. One end of the limit block 16 is fixedly installed with a second spring 17 fixed to the inner wall of the second sliding groove 15.

[0064] A plurality of grooves 18 are provided in the base 1 and are located on one side of the sliding plate 5. The other end of the limit block 16 passes through the second sliding groove 15 and extends into the corresponding groove 18. The other end of the limit block 16 is plugged into the groove 18.

[0065] Among them, when the position of the reference object 9 needs to be adjusted, the user pulls the connecting block 6 to move away from the base 1, and at the same time, the connecting block 6 drives the eyeball model body 2, the fixed plate 7, the reference object 9 and the sliding plate 5 to move away from the base 1. At the same time, the corresponding two limit blocks 16 are squeezed by the groove 18 and slide and move closer to each other. At the same time, the two springs 17 are squeezed and contracted, and then the ends of the two limit blocks 16 that are away from each other are disengaged from the corresponding grooves 18. When the reference object 9 is moved to the appropriate position, the two limit blocks 16 are no longer squeezed. Under the action of the rebound force of the two springs 17, the two limit blocks 16 slide and move away from each other. Then, the two limit blocks 16 are respectively inserted into the corresponding grooves 18, which can fix the position of the sliding plate 5, ensuring that the reference object 9 can be moved to the appropriate position and the position of the reference object 9 will not change when viewed, which is convenient for personnel to demonstrate the effect of different distances of the reference object 9. When the distance of the reference object 9 changes, the length of the eye axis changes, and different imaging results can be displayed, which is convenient for staff to demonstrate changes in vision under different changes in the eye axis.

[0066] Example 2:

[0067] This embodiment provides an eyeball model for demonstrating changes in the eye axis. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0068] In this embodiment, pulleys 20 are symmetrically fixedly installed on the bottom of the connecting block 6, and fixing columns 21 are fixedly installed on the bottom of the base 1 and near the four corners. Anti-slip rubber pads are fixedly installed on the bottom of the fixing columns 21.

[0069] The pulley 20 is provided to ensure smooth displacement of the connecting block 6, and the fixing column 21 and the anti-slip rubber pad are provided to ensure that the base 1 will not be displaced during use.

[0070] Implementation:3:

[0071] This embodiment provides an eyeball model for demonstrating changes in the eye axis. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0072] In this embodiment, a wiping sponge in contact with the reference object 9 is symmetrically fixedly mounted on the inner wall of the cleaning rod 10 .

[0073] The reference object 9 can be wiped by a provided wiping sponge.

[0074] Implementation:4:

[0075] This embodiment provides an eyeball model for demonstrating changes in the eye axis. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0076] In this embodiment, the cross section of the end of the limiting block 16 away from the second spring 17 is arc-shaped, and the cross section of the groove 18 is also arc-shaped.

[0077] The two limiting blocks 16 are ensured to slide and approach each other when squeezed by the grooves 18 .

[0078] Implementation: 5:

[0079] This embodiment provides an eyeball model for demonstrating changes in the eye axis. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0080] In this embodiment, the reference object 9, the lens 4 and the lens in the eyeball model body 2 are located on the same horizontal line.

[0081] Among them, it is ensured that the overall device has a good demonstration effect when in use and no errors occur.

[0082] Implementation:6:

[0083] This embodiment provides an eyeball model for demonstrating changes in the eye axis. In addition to the technical solutions of the above embodiments, it also has the following technical features.

[0084] In this embodiment, the plurality of limiting grooves 14 are distributed at equal intervals, and the plurality of grooves 18 are distributed at equal intervals.

[0085] Here, it is ensured that the reference object 9 can be moved to a suitable position and fixed, and that the lens 4 can be moved to a suitable position and fixed.

[0086] Working principle: When the position of the reference object 9 needs to be adjusted, the user pulls the connecting block 6 to move away from the base 1. At the same time, the connecting block 6 drives the eyeball model body 2, the fixed plate 7, the reference object 9 and the sliding plate 5 to move away from the base 1. At the same time, the corresponding two limit blocks 16 are squeezed by the groove 18 and slide and approach each other. At the same time, the two springs 17 are squeezed and contracted. Then, the ends of the two limit blocks 16 that are away from each other are disengaged from the corresponding grooves 18. When the reference object 9 is moved to the appropriate position, the two limit blocks 16 are no longer squeezed. Under the action of the rebound force of the two springs 17, the two limit blocks 16 slide and move away from each other. Then, the two limit blocks 16 are respectively inserted into the corresponding grooves 18, which can fix the position of the sliding plate 5 and ensure that the reference object 9 can be moved to the appropriate position. The position of the reference object 9 will not change when viewed, which is convenient for personnel to demonstrate the effects of different distances of the reference object 9. When the distance of the reference object 9 changes, the length of the eye axis changes, and different imaging results can be displayed, which is convenient for staff to demonstrate changes in vision under different changes in the eye axis.

[0087] When the position of the lens 4 needs to be adjusted, the user pulls the limit rod 12 to slide upward, and at the same time, the springs 13 are squeezed and contracted. When the lower end of the limit rod 12 is disengaged from the corresponding limit groove 14, the user can pull the sliding column 3 to slide, and the sliding column 3 drives the lens 4 to move. When the lens 4 moves to a suitable position, the limit rod 12 is released. Under the action of the rebound force of the springs 13, the limit rod 12 slides downward and inserts into the corresponding limit groove 14, which can fix the position of the sliding column 3. The fixed position of the sliding column 3 further fixes the position of the lens 4, making it convenient for personnel to demonstrate the effects of different distances of the lens 4;

[0088] When it is necessary to clean the dust on the reference object 9, first pull the cleaning rod 10 downward. The cleaning rod 10 slides downward and drives the two wiping sponges to wipe both sides of the reference object 9, so that there is no dust on the reference object 9. At the same time, the springs three 19 are squeezed and contracted. When the cleaning rod 10 slides to a suitable position, the user releases the cleaning rod 10. Under the action of the rebound force of the springs three 19, the cleaning rod 10 will slide upward and wipe the reference object 9 again, ensuring that there is no dust on both sides of the reference object 9 and the operation is convenient.

[0089] The embodiments of the present application are described above in conjunction with the accompanying drawings. Unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. An eyeball model for demonstrating changes in eye axis, comprising an eyeball model body (2), characterized in that: Also includes: A base (1), a sliding column (3) is slidably mounted on the top of the base (1), an eyeball model body (2) is fixedly mounted on the top of the base (1) and located on the right side of the sliding column (3), and a lens (4) is plugged and mounted on the top of the sliding column (3); A fixing assembly, the fixing assembly being located in the sliding column (3) and being used to fix the position of the sliding column (3); A sliding plate (5), wherein the sliding plate (5) is slidably mounted on one end of the base (1), and the sliding plate (5) is located on the left side of the sliding column (3), one end of the sliding plate (5) passes through the base (1) and extends to the outside and is fixedly mounted with a connecting block (6), a fixing plate (7) is fixedly mounted on the top of the connecting block (6), a cleaning groove (8) is provided in the fixing plate (7), a reference object (9) is fixedly mounted in the cleaning groove (8), a cleaning rod (10) in contact with the reference object (9) is slidably mounted in the cleaning groove (8), and a plurality of springs (19) fixed to the inner wall of the cleaning groove (8) are fixedly mounted on the bottom of the cleaning rod (10); Two sets of limiting components are both located in the sliding plate (5) and are used to limit the sliding of the sliding plate (5).

2. The eyeball model for demonstrating eye axis changes according to claim 1, characterized in that: The fixing assembly includes: A sliding groove (11), wherein the sliding groove (11) is provided in the sliding column (3), a limiting rod (12) is slidably installed in the sliding groove (11), and a plurality of springs (13) fixed to the inner wall of the sliding groove (11) are fixedly installed on the top of the limiting rod (12); A plurality of limiting grooves (14) are provided in the base (1) and are located at the bottom of the sliding column (3); the lower end of the limiting rod (12) passes through the sliding groove (11) and extends into the corresponding limiting groove (14); the lower end of the limiting rod (12) is plugged into the limiting groove (14).

3. The eyeball model for demonstrating eye axis changes according to claim 2, characterized in that: The limiting component includes: Sliding groove 2 (15), the sliding groove 2 (15) is provided in the sliding plate (5), a limit block (16) is slidably installed in the sliding groove 2 (15), and one end of the limit block (16) is fixedly installed with a spring 2 (17) fixed to the inner wall of the sliding groove 2 (15); A plurality of grooves (18), wherein the plurality of grooves (18) are all provided in the base (1), and the plurality of grooves (18) are all located on one side of the sliding plate (5), the other end of the limit block (16) passes through the second sliding groove (15) and extends into the corresponding groove (18), and the other end of the limit block (16) is plugged into and fitted with the groove (18).

4. The eyeball model for demonstrating eye axis changes according to claim 1, characterized in that: Pulleys (20) are symmetrically fixedly installed on the bottom of the connecting block (6), and fixed columns (21) are fixedly installed on the bottom of the base (1) and near the four corners, and non-slip rubber pads are fixedly installed on the bottom of the fixed columns (21).

5. The eyeball model for demonstrating eye axis changes according to claim 1, characterized in that: A wiping sponge in contact with a reference object (9) is symmetrically fixedly mounted on the inner wall of the cleaning rod (10).

6. The eyeball model for demonstrating eye axis changes according to claim 3, characterized in that: The cross section of one end of the limit block (16) away from the second spring (17) is arc-shaped, and the cross section of the groove (18) is also arc-shaped.

7. The eyeball model for demonstrating eye axis changes according to claim 1, characterized in that: The reference object (9) is located on the same horizontal line as the lens (4) and the lens in the eyeball model body (2).

8. The eyeball model for demonstrating eye axis changes according to claim 3, characterized in that: The plurality of limiting grooves (14) are distributed at equal intervals, and the plurality of grooves (18) are distributed at equal intervals.

Images