Auxiliary device for children vision examination

Abstract

The auxiliary device comprises a bottom plate, a detection device is fixedly installed at the upper end of the bottom plate, a bearing assembly is installed on the side, located on the detection device, of the bottom plate, and a supporting block is installed on the surface of the end, away from the detection device, of the bottom plate in a sliding mode. A sliding platform of an electric sliding table moves to drive a supporting block installed at the upper end of the sliding platform to move, then the distance between a seat at the upper end of the supporting block and a bracket in a bearing assembly is adjusted, and the practicability of the device is improved; the sliding groove and the sliding block limit lifting of the lifting pipe, a mounting plate at the top of the lifting pipe adjusts the height of the seat along with lifting of the lifting pipe, meanwhile, a steel ball sleeve embedded in the top of the supporting block provides auxiliary supporting for lifting of the lifting pipe, the lifting pipe is prevented from shaking during lifting, and then the stability of the seat is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vision examination, in particular to an auxiliary device for children's vision examination. Background Art

[0002] The visual acuity chart currently used mainly checks central vision, that is, checks the visual acuity of the fovea of ​​the retinal macular area, so that the preliminary situation of visual function can be understood simply and quickly, which is of great significance for the clinical diagnosis and treatment of eye diseases.

[0003] After searching, the prior art, announcement number: CN215914537U, discloses a head and neck auxiliary support device for children's vision examination. The device is not only easy for the user to adjust, but also plays a good protective role for the patient, and at the same time improves the patient's detection efficiency.

[0004] The device is cumbersome to adjust the seat height, and the height of the seat can only be adjusted through the cooperation between the sleeve, the locking bolt, the threaded hole and the L-shaped rod, which is time-consuming and laborious. In addition, the seat is suspended in the air and its load-bearing capacity is limited. When a fat child sits on it, the stability of the seat is poor. Therefore, we need to propose an auxiliary device for children's vision examination. Utility Model Content

[0005] The purpose of the utility model is to provide an auxiliary device for children's vision examination, which can quickly adjust the height of the seat, and the seat has strong load-bearing capacity and high stability, so as to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The auxiliary device for checking children's vision comprises a base plate, a detection device is fixedly installed on the upper end of the base plate, a supporting assembly is installed on the side of the base plate located at the detection device, a support block is slidably installed on the surface of one end of the base plate away from the detection device, a cavity is opened inside the support block, a first rotating bearing is fixedly embedded in the inner bottom of the cavity, a threaded rod is fixedly inserted in the inner ring of the first rotating bearing, a driven bevel gear is fixedly sleeved on the outer wall of the threaded rod, a driving motor is fixedly installed on one side of the support block, one end of the output shaft of the driving motor passes through the support block and is fixedly sleeved with an active bevel gear, the active bevel gear is meshed with the driven bevel gear, the threaded rod is located above the driven bevel gear and is threadedly connected to a lifting tube, one end of the lifting tube passes through the upper end of the support block and is connected to a mounting plate, and the upper end of the mounting plate is fixedly connected to a seat by bolts.

[0008] Preferably, the supporting assembly comprises an inverted L-shaped fixing frame, a mounting frame is fixedly mounted on the inner top of the inverted L-shaped fixing frame, and a bracket is fixedly mounted on the inner bottom of the mounting frame.

[0009] Preferably, the upper end of the bracket is arranged to be arc-shaped, and the bracket is arranged to be made of elastic material.

[0010] Preferably, a groove is provided at the upper end of the bottom plate, an electric slide is fixedly installed inside the groove, and the support block is fixedly installed on the sliding platform of the electric slide.

[0011] Preferably, the support block is located at the top of the cavity and is fixedly embedded with a steel ball sleeve, and one end of the lifting tube passes through the steel ball sleeve and is fixedly connected to the mounting plate.

[0012] Preferably, both sides of the inner wall of the support block located in the cavity are provided with sliding grooves, the interior of the sliding groove is slidably connected with a slider, and one end of the slider is fixedly connected to the outer wall of the lifting tube.

[0013] Preferably, the support block is fixedly embedded with a second rotating bearing on one side of the cavity, one end of the output shaft of the drive motor is fixedly inserted into the inner ring of the second rotating bearing, and the support block is fixedly installed with a motor housing on the outside of the drive motor.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model drives the support block installed on the upper end of the electric slide table to move by moving the sliding platform of the electric slide table, thereby adjusting the distance between the seat on the upper end of the support block and the bracket in the supporting assembly, thereby increasing the practicality of the device, and drives the active bevel gear and the driven bevel gear to engage by the output shaft of the driving motor, so that the threaded rod and the lifting tube rotate in coordination, and the sliding groove and the sliding block limit the lifting of the lifting tube, so that the mounting plate on the top of the lifting tube adjusts the height of the seat as the lifting tube is lifted. At the same time, the steel ball sleeve embedded on the top of the support block provides auxiliary support for the lifting of the lifting tube, thereby avoiding shaking when the lifting tube rises, thereby improving the stability of the seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the axonometric structure of the supporting assembly of the utility model;

[0018] Figure 3 It is a schematic cross-sectional structure diagram of the support block of the utility model.

[0019] In the figure: 1. base plate; 2. detection device; 3. inverted L fixing frame; 4. mounting frame; 5. bracket; 6. groove; 7. electric slide; 8. support block; 9. first rotating bearing; 10. threaded rod; 11. driven bevel gear; 12. driving motor; 13. driving bevel gear; 14. second rotating bearing; 15. lifting tube; 16. mounting plate; 17. seat; 18. steel ball sleeve; 19. slide groove; 20. slider. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3 , the utility model provides a technical solution:

[0022] An auxiliary device for children's vision examination, comprising a bottom plate 1, a detection device 2 is fixedly installed on the upper end of the bottom plate 1, a supporting assembly is installed on one side of the bottom plate 1 located at the detection device 2, the supporting assembly comprises an inverted L fixing frame 3, a mounting frame 4 is fixedly installed on the inner top of the inverted L fixing frame 3, a bracket 5 is fixedly installed on the inner bottom of the mounting frame 4, the upper end of the bracket 5 is arranged in an arc shape, and the bracket 5 is arranged to be a bracket made of elastic material, so that the chin of the child can be supported by the bracket 5 when the child's vision is tested, and the bracket 5 made of elastic material protects the child's chin, thereby increasing the comfort of the child in using the device;

[0023] A support block 8 is slidably mounted on the surface of one end of the bottom plate 1 away from the detection device 2. A groove 6 is provided at the upper end of the bottom plate 1. An electric slide 7 is fixedly mounted inside the groove 6. The support block 8 is fixedly mounted on the sliding platform of the electric slide 7. The electric slide 7 is configured as a stepping electric slide, which is convenient for moving the sliding platform of the electric slide 7 to drive the support block 8 mounted on its upper end to move, thereby adjusting the distance between the seat 17 at the upper end of the support block 8 and the bracket 5 in the supporting assembly, thereby increasing the practicality of the device;

[0024] A cavity is provided inside the support block 8, and a first rotating bearing 9 is fixedly embedded in the inner bottom of the cavity. A threaded rod 10 is fixedly inserted in the inner ring of the first rotating bearing 9, so that the threaded rod 10 can be supported by the first rotating bearing 9. A driven bevel gear 11 is fixedly sleeved on the outer wall of the threaded rod 10. A driving motor 12 is fixedly installed on one side of the support block 8. The driving motor 12 is set as a forward and reverse stepping motor. One end of the output shaft of the driving motor 12 passes through the support block 8 and is fixedly sleeved with an active bevel gear 13. The active bevel gear 13 is meshed with the driven bevel gear 11. A second rotating bearing 14 is fixedly embedded in one side of the support block 8 located in the cavity. One end of the output shaft of the driving motor 12 is fixedly inserted in the inner ring of the second rotating bearing 14, and a motor housing is fixedly installed on the support block 8 located on the outer side of the driving motor 12, so that the active bevel gear 13 is driven to mesh with the driven bevel gear 11 through the output shaft of the driving motor 12, thereby driving the threaded rod 10 to rotate.

[0025] The threaded rod 10 is located above the driven bevel gear 11 and is threadedly connected with a lifting tube 15. The inner wall of the lifting tube 15 is provided with an internal thread that matches the outer wall thread of the threaded rod 10. One end of the lifting tube 15 passes through the upper end of the support block 8 and is connected to a mounting plate 16. The support block 8 is located at the top of the cavity and is fixedly embedded with a steel ball sleeve 18. One end of the lifting tube 15 passes through the steel ball sleeve 18 and is fixedly connected to the mounting plate 16, so that the steel ball sleeve 18 embedded on the top of the support block 8 can provide auxiliary support for the lifting of the lifting tube 15, thereby preventing the lifting tube 15 from shaking when it rises, thereby improving the stability of the seat 17.

[0026] The upper end of the mounting plate 16 is fixedly connected to the seat 17 by bolts, and the support block 8 is provided with slide grooves 19 on both sides of the inner wall of the cavity, and a slider 20 is slidably connected inside the slide groove 19. One end of the slider 20 is fixedly connected to the outer wall of the lifting tube 15, so that it is convenient to rotate with the lifting tube 15 through the threaded rod 10. The slide groove 19 and the slider 20 limit the lifting and lowering of the lifting tube 15, so that the mounting plate 16 on the top of the lifting tube 15 can adjust the height of the seat 17 as the lifting tube 15 rises and falls.

[0027] When the utility model is in use, the sliding platform of the electric slide 7 drives the support block 8 installed on its upper end to move, thereby adjusting the distance between the seat 17 on the upper end of the support block 8 and the bracket 5 in the supporting assembly, thereby increasing the practicality of the device. The output shaft of the driving motor 12 drives the active bevel gear 13 to engage with the driven bevel gear 11, so that the threaded rod 10 and the lifting tube 15 cooperate to rotate, and the slide groove 19 and the slider 20 limit the lifting and lowering of the lifting tube 15, so that the top mounting plate 16 of the lifting tube 15 adjusts the height of the seat 17 as the lifting tube 15 rises and falls. At the same time, the steel ball sleeve 18 embedded on the top of the support block 8 provides auxiliary support for the lifting and lowering of the lifting tube 15, thereby avoiding shaking when the lifting tube 15 rises, thereby improving the stability of the seat 17.

[0028] The same or similar components are indicated by the same reference numerals in different drawings. In addition, please understand that terms such as "first", "second", "third", "upper", "lower", "front", "rear", "inner", "outer", "end", "portion", "segment", "width", "thickness", "region" and the like in the text are only for the convenience of readers to refer to the structure in the drawings and are only used to help describe the present invention, and are not limitations of the present invention.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for children's vision examination, characterized in that: The invention comprises a bottom plate (1), a detection device (2) is fixedly mounted on the upper end of the bottom plate (1), a supporting assembly is mounted on one side of the bottom plate (1) located on the detection device (2), a support block (8) is slidably mounted on the surface of one end of the bottom plate (1) away from the detection device (2), a cavity is provided inside the support block (8), a first rotating bearing (9) is fixedly embedded in the inner bottom of the cavity, a threaded rod (10) is fixedly inserted into the inner ring of the first rotating bearing (9), a driven bevel gear (11) is fixedly sleeved on the outer wall of the threaded rod (10), A driving motor (12) is fixedly mounted on one side of the support block (8); one end of an output shaft of the driving motor (12) passes through the support block (8) and is fixedly sleeved with a driving bevel gear (13); the driving bevel gear (13) is meshed with a driven bevel gear (11); the threaded rod (10) is located above the driven bevel gear (11) and is threadedly connected with a lifting tube (15); one end of the lifting tube (15) passes through the upper end of the support block (8) and is connected with a mounting plate (16); the upper end of the mounting plate (16) is fixedly connected with a seat (17) by bolts.

2. The auxiliary device for children's vision examination according to claim 1, characterized in that: The supporting assembly comprises an inverted L-shaped fixing frame (3), a mounting frame (4) is fixedly mounted on the inner top of the inverted L-shaped fixing frame (3), and a bracket (5) is fixedly mounted on the inner bottom of the mounting frame (4).

3. The auxiliary device for children's vision examination according to claim 2, characterized in that: The upper end of the bracket (5) is arranged to be arc-shaped, and the bracket (5) is arranged to be a bracket made of elastic material.

4. The auxiliary device for children's vision examination according to claim 1, characterized in that: A groove (6) is provided at the upper end of the base plate (1), an electric slide (7) is fixedly installed inside the groove (6), and the support block (8) is fixedly installed on the sliding platform of the electric slide (7).

5. The auxiliary device for children's vision examination according to claim 1, characterized in that: The support block (8) is located at the top of the cavity and is fixedly embedded with a steel ball sleeve (18), and one end of the lifting tube (15) passes through the steel ball sleeve (18) and is fixedly connected to the mounting plate (16).

6. The auxiliary device for children's vision examination according to claim 5, characterized in that: The support block (8) is provided with sliding grooves (19) on both sides of the inner wall of the cavity, and a slider (20) is slidably connected inside the sliding groove (19), and one end of the slider (20) is fixedly connected to the outer wall of the lifting tube (15).

7. The auxiliary device for children's vision examination according to claim 6, characterized in that: The support block (8) is located on one side of the cavity and is fixedly embedded with a second rotating bearing (14); one end of the output shaft of the drive motor (12) is fixedly inserted into the inner ring of the second rotating bearing (14); and the support block (8) is located on the outside of the drive motor (12) and is fixedly installed with a motor housing.

Images