An optometer

Abstract

The utility model provides an optometry appearance, including the optometry appearance body of being hung through connecting rod on optometry platform, optometry appearance body and connecting rod are connected through the upper angle adjusting shaft of setting along the horizontal direction, and optometry appearance body can overturn relative connecting rod, and the fixed component that optometry appearance body and connecting rod position can be fixed relative is arranged between optometry appearance body and connecting rod. This angle adjusting device can adjust the inclination angle between optometry appearance body and patient face and adjust the inclination angle of optometry appearance body in vertical direction, and this optometry appearance has the advantage that the angle adjusting degree is high, and the suitability is better.

Description

Technical Field

[0001] This utility model relates to the technical field of optometry equipment, and in particular to an optometer. Background Technology

[0002] An optometry device is a specialized medical instrument used to measure the refractive state of the human eye (such as myopia, hyperopia, and astigmatism) and corneal curvature. Its technology involves multiple fields such as optics, electronics, computers, and artificial intelligence. The optometry device projects light onto the eyeball using an infrared or LED light source. It analyzes the differences in the position of the light focused on the retina by utilizing the refractive properties of light in refractive media such as the cornea and lens, thereby calculating the refractive power.

[0003] Chinese patent application publication number CN114010146A discloses a comprehensive optometer, including a support frame, a support arm mounted on the support frame, and an eye examination instrument body. The support arm includes a guide tube mounted on the support frame, a lifting rod coaxially rotatably inserted into the guide tube, and a fixed arm fixedly connected to the upper part of the lifting rod. The eye examination instrument body includes a bull's eye fixing seat and a bull's eye body mounted below the bull's eye fixing seat. A connecting tube is fixedly connected to the upper end face of the bull's eye fixing seat. The connecting tube is movably inserted into the fixed arm. A second adjusting screw is threaded through the fixed arm. The second adjusting screw coaxially passes through the connecting tube and is rotatably connected to the bull's eye fixing seat.

[0004] The existing technical solutions described above have the following drawbacks: the refractometer body in the comprehensive optometry instrument is set below the fixed arm via the second adjusting screw. When special patients (wheelchair users, children) need to adjust the tilt angle of the refractometer body due to differences in sitting posture, the comprehensive optometry instrument is difficult to adapt to, and the aforementioned comprehensive optometry instrument has the problem of poor applicability. Utility Model Content

[0005] The problem this invention aims to solve is to provide an optometer that addresses the aforementioned shortcomings in the prior art, thereby resolving the issue of poor applicability in the prior art.

[0006] The above-mentioned utility model objective is achieved through the following technical solution: an optometer, including an optometer body suspended on an optometry table via a connecting rod, the optometer body and the connecting rod being connected by an upward adjustment shaft arranged in the horizontal direction, and the optometer body being able to rotate relative to the connecting rod, and a fixing component being provided between the optometer body and the connecting rod to fix the positions of the optometer body and the connecting rod.

[0007] The present invention is further configured such that: the upper angle adjustment shaft is disposed on the connecting rod, the optometer body is rotatably disposed on the upper angle adjustment shaft via the angle adjustment seat, the angle adjustment seat is provided with a movable groove for the connecting rod to move, and the fixing component is disposed on the angle adjustment seat.

[0008] The present invention is further configured such that: the angle adjustment seat is provided with an upper shaft hole that rotatably engages with the upper angle adjustment shaft; the top surface of the angle adjustment seat is provided with a locking shaft opening that communicates with the upper shaft hole; the angle adjustment seat is provided with a through rod hole and a locking shaft screw hole located on both sides of the locking shaft opening; the fixing component includes a locking shaft screw with one end passing through the through rod hole and the locking shaft opening and being threadedly connected to the locking shaft screw hole, and the other end being provided with a locking shaft handle; a sleeve is sleeved on the locking shaft screw with one end abutting against the locking shaft handle and the other end abutting against the angle adjustment seat.

[0009] The present invention is further configured such that: the adjusting seat is provided with a guide groove communicating with the upper shaft hole, the upper adjusting shaft is provided with a guide screw hole, and the guide screw hole is threadedly connected with a guide screw whose head slides in cooperation with the guide groove.

[0010] The present invention is further configured such that: the connecting rod is vertically mounted on the upper adjustment shaft, and its upper end is connected to the optometry table through a fixed seat; the top surface of the fixed seat is provided with a connecting groove and a connecting hole in sequence from bottom to top; the top of the connecting rod passes through the connecting hole and is provided with a connecting plate; a gasket is fitted on the connecting rod between the connecting plate and the bottom of the connecting groove; a pad and a slotted nut are stacked on top of the connecting plate in sequence; the slotted nut is limited and fixed in the connecting groove; and the slotted nut is threadedly connected with a locking screw whose bottom surface abuts against the top surface of the pad.

[0011] The present invention is further configured such that: the optometer body is provided with a connecting frame through which the lower angle adjustment shaft passes; the angle adjustment seat is rotatably mounted on the lower angle adjustment shaft; the bottom surface of the angle adjustment seat is provided with a mounting groove; an elastic element for driving the angle adjustment seat upward is inserted into the mounting groove; and a driving element for driving the end of the angle adjustment seat away from the mounting groove to perform up-and-down reciprocating motion is provided at the end of the angle adjustment seat away from the mounting groove.

[0012] The present invention is further configured such that: a drive screw hole is provided at one end of the bottom surface of the angle adjustment seat away from the mounting groove, and the drive component is a hand screw that is threadedly connected to the drive screw hole and whose bottom surface abuts against the body of the optometer.

[0013] The present invention is further configured such that: a support rod adjustment device is provided at the lower part of the optometry instrument body, the support rod adjustment device includes an adjustment frame provided at the lower part of the optometry instrument body and having an adjustment groove, a transverse sliding hole through which the adjustment frame is opened on the outer side wall, a transverse sliding column horizontally slidably disposed in the adjustment groove, a transverse sliding pin passing through the transverse sliding column and having both ends slidably engaged with the transverse sliding hole, a connecting rod with one end hinged to the transverse sliding pin and the other end hinged to the support rod via a lower pin, a drive component for driving the transverse sliding column to perform horizontal reciprocating linear motion via an upper pin.

[0014] The present invention is further configured such that: an adjusting screw hole is provided on the end face of the transverse sliding column away from the support rod; the driving assembly includes a fixed tube fixedly disposed in the adjusting groove and aligned with the transverse sliding column, an adjusting screw rod passing through the fixed tube and threadedly connected to the adjusting screw hole; and the adjusting screw rod is fitted with a plurality of limiting snap rings that abut against the two end faces of the fixed tube respectively by means of a slot.

[0015] The present invention is further configured such that: a pipe fixing screw hole is provided on the outer wall of the fixing tube, and a pipe fixing through hole aligned with the pipe fixing screw hole is provided on the side wall of the adjusting frame, and a pipe fixing screw threadedly connected to the pipe fixing screw hole is provided through the pipe fixing through hole.

[0016] In summary, the beneficial technical effects of this utility model are as follows:

[0017] (1) This angle adjustment device can adjust the tilt angle between the optometry instrument body and the patient's face, as well as the tilt angle of the optometry instrument body in the vertical direction. This optometry instrument has the advantage of high degree of freedom in angle adjustment and good applicability.

[0018] (2) The adjustment device of this support rod can adjust the tilt angle of the support rod according to the different sitting postures of different patients, so that the support rod can support the patient's face in a more fitting way. This optometry instrument has the advantage of high applicability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the optometer in this utility model;

[0020] Figure 2 This is a structural schematic diagram of the frame, angle adjustment device, and support rod adjustment device in this utility model;

[0021] Figure 3 This is a cross-sectional view of the optometer in this utility model from the first perspective;

[0022] Figure 4 This is a cross-sectional view of the optometer in this utility model from the second perspective;

[0023] Figure 5 This is an exploded structural diagram of the upper adjustment shaft and guide screw in this utility model;

[0024] Figure 6 This is a cross-sectional view of the optometer in this utility model from the third perspective;

[0025] Figure 7 This is a cross-sectional view of the connecting frame and the machine frame in this utility model;

[0026] Figure 8 This is a first-view sectional structural diagram of the frame and support rod adjustment device in this utility model;

[0027] Figure 9 This is a cross-sectional view of the support rod adjustment device in this utility model.

[0028] In the above attached figures: 1. Optometrist body; 2. Frame; 21. Vertical plate; 22. Horizontal plate; 23. Frame hole; 3. Angle adjustment device; 4. Support rod adjustment device; 5. Connecting frame; 6. Lower angle adjustment shaft; 7. Angle adjustment seat; 8. Lower shaft hole; 9. Mounting groove; 10. Sealing plate; 11. Elastic element; 12. Drive screw hole; 13. Drive element; 14. Upper shaft hole; 15. Guide groove; 16. Upper angle adjustment shaft; 17. Guide screw hole; 18. Guide screw; 19. Movable groove; 20. Countersunk hole; 24. Countersunk screw; 25. Connecting rod; 251. Connecting plate; 26. Connecting screw hole; 27. Fixing seat; 28. Insertion arm hole; 29. ​​Connecting groove; 291. Connecting hole; 30. Gasket; 31. 31. Pad; 32. Slotted nut; 33. Locking screw; 34. Lock shaft opening; 35. Through rod hole; 36. Lock shaft screw hole; 37. Lock shaft screw rod; 38. Lock shaft handle; 39. Sleeve; 40. Adjusting bracket; 401. Fixing block; 402. Side plate; 41. Adjusting groove; 42. Horizontal sliding hole; 43. Horizontal sliding column; 44. Horizontal sliding pin; 45. Connecting rod; 46. Lower pin; 47. Support rod; 48. Upper pin; 49. Fixing tube; 50. Fixing tube screw hole; 51. Fixing tube through hole; 52. Fixing tube screw; 53. Adjusting screw hole; 54. Adjusting screw rod; 55. Limiting snap ring; 56. Insertion slot; 57. Adjusting head; 58. Insertion rod hole; 59. Rotation limiting screw hole; 60. Rotation limiting screw. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this utility model clearer and easier to understand, the present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] like Figure 1 As shown, this utility model proposes an optometer, including an optometer body 1 with a frame 2, an angle adjustment device 3 disposed on the upper part of the optometer body 1, and a support rod adjustment device 4 disposed on the lower part of the optometer body 1.

[0031] like Figure 7 As shown, in this embodiment, the frame 2 is a right-angled folded plate. The frame 2 includes a vertical plate 21 and a horizontal plate 22 that is vertically fixed to the top of the vertical plate 21. Two through holes 23 are opened on the top surface of the frame 2.

[0032] like Figure 7As shown, the angle adjustment device 3 includes a connecting frame 5 disposed on the upper part of the optometry instrument body 1. The connecting frame 5 is a U-shaped frame with a U-shaped groove. The connecting frame 5 passes through the through-frame hole 23 from bottom to top on the horizontal plate 22 of the frame 2. The opening of the U-shaped groove of the connecting frame 5 faces upward. The connecting frame 5 is screwed to the bottom surface of the horizontal plate 22.

[0033] like Figure 2 As shown, a downward adjustment shaft 6 is installed on the connecting frame 5. The downward adjustment shaft 6 passes through the U-shaped groove of the connecting frame 5. The two ends of the downward adjustment shaft 6 are fitted with retaining rings by slotting. The two retaining rings abut against the two opposite outer side walls of the connecting frame 5. The two retaining rings cooperate to fix the downward adjustment shaft 6 axially and limit the axial displacement of the downward adjustment shaft 6.

[0034] like Figure 2 and 3 As shown, an angle adjustment seat 7 is provided in the U-shaped groove of the connecting frame 5. The angle adjustment seat 7 is rotatably mounted on the lower angle adjustment shaft 6. A lower shaft hole 8 is provided on the side wall of the angle adjustment seat 7 for the lower angle adjustment shaft 6 to pass through and rotate in cooperation with the lower angle adjustment shaft 6. The cross-section of the lower shaft hole 8 is circular.

[0035] like Figure 3 As shown, a mounting groove 9 is provided on the bottom surface of the angle adjustment seat 7. The side of the mounting groove 9 extends to the outer wall of the angle adjustment seat 7. A sealing plate 10, which closes the side opening of the mounting groove 9, is screwed onto the outer wall of the angle adjustment seat 7. An elastic element 11 is inserted into the mounting groove 9. One end of the elastic element 11 abuts against the top wall of the mounting groove 9, and the other end abuts against the top surface of the frame 2. The elastic element 11 is used to drive the angle adjustment seat 7 to move upward. Under the drive of the elastic element 11, the angle adjustment seat 7 moves away from the frame 2. In this embodiment, the elastic element 11 is a spring.

[0036] like Figure 3 As shown, a driving component 13 is provided at the end of the angle adjustment seat 7 away from the mounting groove 9. The driving component 13 is used to drive the end of the angle adjustment seat 7 away from the mounting groove 9 to perform up-and-down reciprocating motion. In this embodiment, a driving screw hole 12 is provided at the bottom surface of the angle adjustment seat 7 away from the mounting groove 9. The driving component 13 is a hand screw that is threadedly connected to the driving screw hole 12. The bottom surface of the hand screw abuts against the top surface of the frame 2.

[0037] like Figure 1 and 5 As shown, the side wall of the angle adjustment seat 7 has an upper shaft hole 14 with a circular cross-section. The axis of the upper shaft hole 14 is perpendicular to the axis of the lower angle adjustment shaft 6. The outer side wall of the angle adjustment seat 7 has a guide groove 15 that communicates with the upper shaft hole 14. The upper angle adjustment shaft 16 is rotatably mounted in the upper shaft hole 14. The axial surface of the upper angle adjustment shaft 16 has a guide screw hole 17. The guide screw hole 17 is threadedly connected to a guide screw 18. The head of the guide screw 18 slides in the guide groove 15. The above structure can improve the rotational stability of the upper angle adjustment shaft 16.

[0038] like Figure 4 As shown, a movable groove 19 is provided on the top surface of the angle adjustment seat 7, which communicates with the upper shaft hole 14 and extends to the side wall of the angle adjustment seat 7. A countersunk hole 20 is provided on the axial surface of the upper angle adjustment shaft 16, and a countersunk screw 24 is provided in the countersunk hole 20. A connecting rod 25 is provided on the upper angle adjustment shaft 16, which passes through the movable groove 19, and a connecting screw hole 26 is provided on the bottom surface of the connecting rod 25 for threaded connection with the countersunk screw 24.

[0039] like Figure 3 As shown, a fixing seat 27 is provided at the top of the connecting rod 25. An insertion hole 28 for inserting into the fixing arm is provided on the side wall of the fixing seat 27. The fixing seat 27 and the fixing arm are fixedly connected by screws. In this embodiment, a connecting groove 29 and a connecting hole 291 are sequentially formed downwards on the top surface of the fixing seat 27. Both the connecting groove 29 and the connecting hole 291 have circular cross-sections. The top of the connecting rod 25 passes through the connecting hole 291 and is fixedly connected to a connecting plate 251. A washer 30 is fitted onto the connecting rod 25. One end of the washer 30 abuts against the connecting plate 251, and the other end abuts against the bottom of the connecting groove 29.

[0040] like Figure 3 As shown, a pad 31 is slidably disposed in the connecting groove 29, and the pad 31 is composed of two overlapping circular plates. A slotted nut 32 is provided in the connecting groove 29 for limiting, and the slotted nut 32 is located above the pad 31. The fixing seat 27 limits and fixes the slotted nut 32 by inserting a limiting pin on its side, and the slotted nut 32 is restricted to reciprocating up and down in the connecting groove 29. The slotted nut 32 is threadedly connected to a locking screw 33, the bottom surface of the locking screw 33 abutting against the top surface of the pad 31. The locking screw 33 is used to press and fix the connecting plate 251 to the bottom of the connecting groove 29.

[0041] like Figure 2 and 6 As shown, the top surface of the angle adjustment seat 7 is provided with a locking shaft opening 34, which communicates with the upper shaft hole 14 and the movable groove 19. The angle adjustment seat 7 is provided with a rod through hole 35 and a locking shaft screw hole 36, which are located on both sides of the locking shaft opening 34, and both the rod through hole 35 and the locking shaft screw hole 36 communicate with the locking shaft opening 34.

[0042] like Figure 2 and 6As shown, a fixing component is provided between the optometry instrument body 1 and the connecting rod 25. The fixing component is used to fix the positions of the optometry instrument body 1 and the connecting rod 25. The fixing component includes a locking screw 37. One end of the locking screw 37 passes through the rod hole 35 and the locking opening 34 in sequence and is threadedly connected to the locking screw hole 36. The other end is fixedly connected to the locking handle 38. A sleeve 39 is sleeved on the locking screw 37, with one end abutting against the locking handle 38 and the other end abutting against the angle adjustment seat 7.

[0043] The detailed working process of the angle adjustment device 3 in this embodiment is as follows:

[0044] S1: The operator rotates the locking shaft handle 38 to drive the locking shaft screw 37 to rotate, thereby increasing the gap of the locking shaft opening 34. At this time, the clamping force of the angle adjustment seat 7 on the upper angle adjustment shaft 16 decreases. Then, the operator adjusts the tilt angle between the optometry instrument body 1 and the patient's face according to the patient's sitting posture. After the adjustment is completed, the operator rotates the locking shaft handle 38 to drive the locking shaft screw 37 to rotate, thereby decreasing the gap of the locking shaft opening 34. The clamping force of the angle adjustment seat 7 on the upper angle adjustment shaft 16 increases. At this time, the optometry instrument body 1 is restricted from adjusting the angle.

[0045] S2: The operator drives the angle adjustment seat 7 to move up and down reciprocally at the end away from the mounting slot 9 by turning the hand screw. At the same time, the angle adjustment seat 7 moves away from the frame 2 under the drive of the elastic element 11. The operator can then adjust the tilt angle of the optometry instrument body 1 in the vertical direction according to the patient's sitting posture.

[0046] This angle adjustment device can adjust the tilt angle between the optometry instrument body 1 and the patient's face, as well as the tilt angle of the optometry instrument body 1 in the vertical direction. This optometry instrument has the advantage of high degree of freedom in angle adjustment and good applicability.

[0047] like Figure 2 and 8 As shown, the support rod adjustment device 4 includes an adjustment frame 40 disposed at the lower part of the frame 2. The adjustment frame 40 includes a fixing block 401 screwed to the side wall of the vertical plate 21 and a pair of side plates 402 screwed to the opposite side walls of the fixing block 401. An adjustment groove 41 located between the two side plates 402 is opened on the end face of the adjustment frame 40 away from the vertical plate 21. A transverse sliding hole 42 is opened through the outer side wall of the adjustment frame 40. The transverse sliding hole 42 is an elongated hole and communicates with the adjustment groove 41.

[0048] like Figure 2 and 8As shown, a cylindrical transverse sliding column 43 is horizontally slidably arranged at the bottom of the adjusting groove 41. A transverse sliding pin 44 is threaded through the transverse sliding column 43. Both ends of the transverse sliding pin 44 pass through the transverse sliding hole 42 and are slidably engaged with the transverse sliding hole 42. Two retaining springs are sleeved at both ends of the transverse sliding pin 44 by means of slotting. The two retaining springs abut against the two opposite outer side walls of the adjusting frame 40 respectively. The two retaining springs cooperate to axially fix the transverse sliding pin 44 and limit the axial displacement of the transverse sliding pin 44.

[0049] like Figure 2 and 8 As shown, a pair of connecting rods 45 are hinged to the transverse pivot 44. A lower pivot 46 is provided at the end of the connecting rod 45 away from the transverse pivot 44. The two ends of the lower pivot 46 are fitted with retaining rings by means of slots. The two retaining rings abut against the outer side walls of the two connecting rods 45 respectively. The two retaining rings cooperate to fix the lower pivot 46 axially and limit the axial displacement of the lower pivot 46.

[0050] like Figure 2 and 8 As shown, a connecting rod 45 is hinged to a support rod 47 via a lower pin 46, and the hinge point between the connecting rod 45 and the support rod 47 is located in the middle of the support rod 47. An upper pin 48 passes through the top of the support rod 47 and is mounted on the upper part of the adjusting frame 40. Two retaining rings are fitted onto the upper pin 48 through a slot, and the two retaining rings abut against the two slot arms of the adjusting slot 41 respectively. The two retaining rings cooperate to fix the upper pin 48 axially and restrict its axial displacement. The top of the support is hinged to the upper part of the adjusting frame 40 via the upper pin 48. The tail end of the support rod 47 can be connected to a forehead support for supporting the forehead or a nose support for supporting the bridge of the nose.

[0051] like Figure 8 and 9 As shown, the support rod adjustment device 4 also includes a drive assembly, which is used to drive the transverse sliding column 43 to perform horizontal reciprocating linear motion. The drive assembly includes a fixed tube 49 and an adjusting screw 54.

[0052] like Figure 8 and 9 As shown, in this embodiment, the fixing tube 49 is a round tube, and the fixing tube 49 and the transverse sliding column 43 are aligned in the horizontal direction. Two fixing tube screw holes 50 are symmetrically opened on the outer wall of the fixing tube 49. Fixing tube through holes 51 aligned with the fixing tube screw holes 50 are opened on the two opposite side walls of the adjusting frame 40. Fixing tube screws 52 that are threadedly connected to the fixing tube screw holes 50 are inserted through the fixing tube through holes 51.

[0053] like Figure 8 and 9As shown, an adjusting screw hole 53 is provided on the end face of the transverse sliding column 43 facing the fixed tube 49. The adjusting screw 54 passes through the fixed tube 49 and is threaded into the adjusting screw hole 53, and the adjusting screw 54 is rotatably engaged with the fixed tube 49. In this embodiment, two limiting spring clips 55 are sleeved on the adjusting screw 54 by means of a slot. The two limiting spring clips 55 abut against the two end faces of the fixed tube 49 respectively. The two limiting spring clips 55 cooperate to fix the adjusting screw 54 axially and limit the axial displacement of the adjusting screw 54.

[0054] like Figure 8 and 9 As shown, the outer side wall of the adjusting screw 54 away from the transverse sliding column 43 has a pin groove 56, and the adjusting screw 54 away from the transverse sliding column 43 has an adjusting head 57. The adjusting head 57 has a rod hole 58 for inserting into the adjusting screw 54, and a rotation limiting screw hole 59 aligned with the pin groove 56. The rotation limiting screw hole 59 is threadedly connected to a rotation limiting screw 60 that is inserted into the pin groove 56.

[0055] In this embodiment, the detailed working process of the support rod adjustment device 4 is as follows: The operator rotates the adjustment screw 54 through the adjustment head 57. Since the axial displacement of the adjustment screw 54 is restricted, and the adjustment screw 54 is threadedly connected to the adjustment screw hole 53 on the transverse sliding column 43, the rotation of the adjustment screw 54 will drive the transverse sliding column 43 to make horizontal reciprocating linear motion. Since the top of the support rod 47 is hinged to the upper part of the adjustment frame 40 through the upper pin 48, and the middle part of the support rod 47 is hinged to the connecting rod 45, and the other end of the connecting rod 45 is hinged to the transverse sliding column 43, the horizontal reciprocating linear motion of the transverse sliding column 43 will drive the support rod 47 to swing, thereby adjusting the inclination angle between the support rod 47 and the vertical plane.

[0056] The adjustable support rod 4 can adjust the tilt angle of the support rod 47 according to the different sitting postures of different patients, so that the support rod 47 can support the patient's face in a more comfortable way. This optometry instrument has the advantage of high applicability.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An optometer, comprising an optometer body (1) suspended on an optometry table via a connecting rod (25), characterized in that: The optometry instrument body (1) and the connecting rod (25) are connected by an upward adjustment shaft (16) set in the horizontal direction, and the optometry instrument body (1) can be flipped relative to the connecting rod (25). A fixing component is provided between the optometry instrument body (1) and the connecting rod (25) to fix the position of the optometry instrument body (1) and the connecting rod (25).

2. The optometer according to claim 1, characterized in that: The upper angle adjustment shaft (16) is mounted on the connecting rod (25). The optometry instrument body (1) is rotatably mounted on the upper angle adjustment shaft (16) via the angle adjustment seat (7). The angle adjustment seat (7) has an active groove (19) for the connecting rod (25) to move. The fixing component is mounted on the angle adjustment seat (7).

3. An optometer according to claim 2, characterized in that: The angle adjustment seat (7) has an upper shaft hole (14) that rotates with the upper angle adjustment shaft (16). The top surface of the angle adjustment seat (7) has a locking shaft opening (34) that communicates with the upper shaft hole (14). The angle adjustment seat (7) has a through rod hole (35) and a locking shaft screw hole (36) located on both sides of the locking shaft opening (34). The fixing component includes a locking shaft screw (37) with one end passing through the through rod hole (35) and the locking shaft opening (34) and threadedly connected to the locking shaft screw hole (36), and the other end having a locking shaft handle (38). A sleeve (39) is sleeved on the locking shaft screw (37) with one end abutting against the locking shaft handle (38) and the other end abutting against the angle adjustment seat (7).

4. An optometer according to claim 3, characterized in that: The angle adjustment seat (7) is provided with a guide groove (15) that communicates with the upper shaft hole (14), and the upper angle adjustment shaft (16) is provided with a guide screw hole (17). The guide screw hole (17) is threaded with a guide screw (18) whose head slides in the guide groove (15).

5. An optometer according to claim 1 or 2, characterized in that: The connecting rod (25) is vertically mounted on the upper angle adjustment shaft (16), and its upper end is connected to the optometry table through the fixing seat (27). The top surface of the fixing seat (27) is provided with a connecting groove (29) and a connecting hole (291) in sequence. The top of the connecting rod (25) passes through the connecting hole (291) and is provided with a connecting plate (251). A gasket (30) is sleeved on the connecting rod (25) between the connecting plate (251) and the bottom of the connecting groove (29). A pad (31) and a slotted nut (32) are stacked on top of the connecting plate (251). The slotted nut (32) is fixed in the connecting groove (29). The slotted nut (32) is threaded with a locking screw (33) whose bottom surface abuts against the top surface of the pad (31).

6. An optometer according to claim 2, characterized in that: The optometry instrument body (1) is provided with a connecting frame (5) through which the lower angle adjustment shaft (6) passes. The angle adjustment seat (7) is rotatably mounted on the lower angle adjustment shaft (6). The bottom surface of the angle adjustment seat (7) is provided with a mounting groove (9). An elastic element (11) for driving the angle adjustment seat (7) to move upward is inserted in the mounting groove (9). The end of the angle adjustment seat (7) away from the mounting groove (9) is provided with a driving element (13) for driving the end of the angle adjustment seat (7) away from the mounting groove (9) to move up and down reciprocally.

7. An optometer according to claim 6, characterized in that: The bottom surface of the angle adjustment seat (7) away from the mounting groove (9) is provided with a drive screw hole (12), and the drive component (13) is a hand screw that is threadedly connected to the drive screw hole (12) and whose bottom surface abuts against the optometry instrument body (1).

8. An optometer according to claim 1, characterized in that: The lower part of the optometry instrument body (1) is provided with a support rod adjustment device (4). The support rod adjustment device (4) includes an adjustment frame (40) provided at the lower part of the optometry instrument body (1) and having an adjustment groove (41), a transverse sliding hole (42) through which the adjustment frame (40) is opened, a transverse sliding column (43) which is horizontally slidably provided in the adjustment groove (41), a transverse pin (44) which passes through the transverse sliding column (43) and whose two ends are slidably engaged with the transverse sliding hole (42), a connecting rod (45) with one end hinged to the transverse pin (44) and the other end hinged to the support rod (47) through the lower pin (46), and a drive component for driving the transverse sliding column (43) to perform horizontal reciprocating linear motion.

9. An optometer according to claim 8, characterized in that: The transverse sliding column (43) has an adjustment screw hole (53) on its end face away from the support rod (47). The drive assembly includes a fixed tube (49) fixedly installed in the adjustment groove (41) and aligned with the transverse sliding column (43), and an adjustment screw (54) threaded through the fixed tube (49) and connected to the adjustment screw hole (53). The adjustment screw (54) is fitted with multiple limiting spring clips (55) that abut against the two end faces of the fixed tube (49) respectively by means of a slot.

10. An optometer according to claim 9, characterized in that: The outer wall of the fixed tube (49) is provided with a fixed tube screw hole (50), and the side wall of the adjusting frame (40) is provided with a fixed tube through hole (51) aligned with the fixed tube screw hole (50). A fixed tube screw (52) threadedly connected to the fixed tube screw hole (50) is passed through the fixed tube through hole (51).

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