A display screen rotating mechanism for an optometry device

Abstract

The utility model belongs to optometry equipment technical field, especially point to a kind of display screen rotating mechanism for optometry instrument, including the base of being fixed on optometry instrument main body, the top of base is equipped with the movable slide rail of curve distribution, the inner end sliding connection of supporting movable plate is on movable slide rail, the outer end of supporting movable plate is hinged and has display screen assembly that is turned upside down, this display screen assembly moves horizontally along movable slide rail to realize left and right horizontal steering, damping component is arranged between supporting movable plate and base, and the damping force of this damping component is used to suppress the horizontal movement of display screen assembly along movable slide rail.The utility model display screen assembly not only can be turned upside down, but also can be left and right horizontal steering along movable slide rail, simultaneously, the damping effect of damping component effectively suppresses the horizontal steering movement of display screen, improves the stable keeping of posture of optometry instrument when actual use, so that operator can stand at different angle of optometry instrument and operate and observe.

Description

Technical Field

[0001] This utility model belongs to the field of optometry equipment technology, and specifically refers to a display screen rotation mechanism for an optometer. Background Technology

[0002] As a core device for acquiring key data such as human eye refractive power, the computer refractometer's display screen is a crucial interface for human-computer interaction. Operators need to frequently read information such as the patient's refractive parameters and corneal data through the display screen.

[0003] In existing optometry instrument designs, the display screen is mostly fixed or only has a simple tilt angle adjustment function. This design reveals obvious limitations in actual use, namely that operators can only operate and observe from the back of the device where the display screen is installed, which is quite inconvenient for operators. Summary of the Invention

[0004] The purpose of this invention is to provide a rotating display screen mechanism for an optometer, which not only allows the display screen assembly to flip up and down, but also allows the display screen assembly to rotate horizontally left and right along a movable slide rail, so that the operator can operate and observe the optometer from different angles.

[0005] This utility model is implemented as follows: A rotating display screen mechanism for an optometer includes a base fixed to the main body of the optometer. The top of the base has a curved sliding rail with a horizontally distributed top. The inner end of a supporting movable plate is slidably connected to the sliding rail. A display screen assembly that can flip up and down is hinged to the outer end of the supporting movable plate. The display screen assembly moves horizontally along the sliding rail to achieve left and right horizontal turning. A damping component is provided between the supporting movable plate and the base. The damping force of the damping component is used to suppress the horizontal movement of the display screen assembly along the sliding rail.

[0006] In the above-mentioned display screen rotation mechanism of an optometer, the movable slide rail is a U-shaped movable groove that is symmetrically formed on the top surface of the base. A limiting cover plate is fixed on the base directly above the U-shaped movable groove. The inner end of the supporting movable plate is located between the limiting cover plate and the base, and a limiting distance is formed between the limiting cover plate and the base to limit the up and down position of the supporting movable plate. The inner end of the supporting movable plate is movably connected to the U-shaped movable groove through a connecting component.

[0007] In the aforementioned rotating display screen mechanism of an optometer, the top sidewall of the base has a trajectory profile surface whose contour corresponds to the trajectory of the movable slide rail. The damping assembly includes a damping seat disposed on a supporting movable plate. The damping seat is located outside the trajectory profile surface, and a damping rod with its inner end abutting against the trajectory profile surface is slidably connected to the damping seat along the axial direction of the supporting movable plate. A damping spring with elastic force is provided between the damping seat and the damping rod, which can push the damping rod to move toward the trajectory profile surface.

[0008] In the aforementioned rotating display screen mechanism of an optometer, a damping groove is provided on the damping seat, and the damping rod is fitted through the damping groove. The outer end of the damping rod extends out of the damping seat and is fitted with a limiting spring that abuts against the side wall of the damping seat. The inner end of the damping rod has a limiting step surface that is away from the base. The damping spring is fitted on the damping rod located in the damping groove, and one end of the damping spring abuts against the limiting step surface and the other end abuts against the corresponding groove wall of the damping groove.

[0009] In the aforementioned display screen rotation mechanism of an optometer, the damping component includes a damping block, and the damping rod abuts against the trajectory contour surface through the damping block. Two or more damping rods are arranged side by side, and the inner end of each damping rod is fixedly connected to the damping block.

[0010] In the aforementioned display screen rotation mechanism of an optometer, the connecting assembly includes two connecting pins arranged side by side on a support movable plate. The lower end of the connecting pin extends downward into a U-shaped movable groove and is fitted with a connecting bearing, which rolls with the side wall of the U-shaped movable groove.

[0011] In the above-mentioned display screen rotation mechanism of an optometer, a movable bearing seat is fixed on the support movable plate, and a movable pin is provided on the movable bearing seat along the axial direction of the support movable plate. A movable bearing that rolls or slides on the top surface of the base is fitted on the movable pin.

[0012] In the above-mentioned display screen rotation mechanism of an optometer, the movable bearing seat is located between the supporting movable plate and the top surface of the base. A damping pad is fixed on the supporting movable plate between the supporting movable plate and the limiting cover plate. Both the supporting movable plate and the damping pad are provided with clearance windows for the placement of the movable bearing. There are two movable bearings, which are located on the inner ring side and the outer ring side of the movable slide rail, respectively. The number of movable pins and movable bearings correspond one-to-one and are matched.

[0013] In the aforementioned display screen rotation mechanism of an optometer, the display screen assembly includes a display screen bracket and an LCD screen mounted on the display screen bracket. The display screen bracket is hinged to the outer end of a support movable plate, and the LCD screen is electrically connected to the control assembly of the optometer body. The control assembly controls the display content of the LCD screen.

[0014] In the aforementioned display screen rotation mechanism of an optometer, a tilt sensor or a position sensor is provided on the display screen bracket. The tilt sensor or position sensor is located on one side of the hinge between the display screen bracket and the supporting movable plate, and the tilt sensor or position sensor is used to detect the flip angle of the LCD screen relative to the horizontal plane in real time. The control assembly is electrically connected to the tilt sensor or position sensor, and the control assembly controls the screen display information to be flipped 180° according to the signal from the tilt sensor or position sensor.

[0015] The outstanding advantages of this utility model compared to the prior art are: This utility model has a simple structure, reasonable design, and stable and reliable connection. By using the hinged cooperation between the display screen assembly and the supporting movable plate, and the sliding cooperation between the supporting movable plate and the movable slide rail, the display screen assembly can not only flip up and down, but also turn horizontally left and right along the movable slide rail. At the same time, the damping effect of the damping component effectively suppresses the horizontal turning movement of the display screen, improving the stability of the optometer's posture during actual use, so that the operator can operate and observe the optometer from different angles. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the entire utility model; Figure 2 This is an overall side view of the present invention; Figure 3 This is an exploded view of the overall structure of this utility model; Figure 4 This is a perspective view of the damping component of this utility model.

[0017] In the diagram: 1. Base; 2. Support plate; 3. Display screen assembly; 4. U-shaped movable groove; 5. Limiting cover plate; 6. Track contour surface; 7. Damping seat; 8. Damping rod; 9. Damping spring; 10. Damping groove; 11. Limiting snap ring; 12. Damping block; 13. Connecting bearing; 14. Movable bearing seat; 15. Movable bearing; 16. Damping pad; 17. Clearance window; 18. Display screen bracket; 19. LCD screen. Detailed Implementation

[0018] The present invention will be further described below with reference to specific embodiments. See also: Figure 1 —4: A rotating display screen mechanism for an optometer includes a base 1 fixed to the main body of the optometer. The top of the base 1 has a curved sliding rail with a horizontally distributed top. The inner end of a supporting movable plate 2 is slidably connected to the sliding rail. A display screen assembly 3 that can flip up and down is hinged to the outer end of the supporting movable plate 2. The display screen assembly 3 moves horizontally along the sliding rail to achieve left and right horizontal turning. A damping component is provided between the supporting movable plate 2 and the base 1. The damping force of the damping component is used to suppress the horizontal movement of the display screen assembly 3 along the sliding rail.

[0019] This utility model has a simple structure, reasonable design, and stable and reliable connection. With the hinged cooperation between the display screen assembly 3 and the supporting movable plate 2, and the sliding cooperation between the supporting movable plate 2 and the movable slide rail, the display screen assembly 3 can not only flip up and down, but also turn horizontally left and right along the movable slide rail. At the same time, the damping effect of the damping component effectively suppresses the horizontal turning movement of the display screen, improving the stability of the optometer's posture during actual use, so that the operator can operate and observe the optometer from different angles.

[0020] Furthermore, the movable slide rail can be an annular or arc-shaped track surrounding the outer wall of the base 1. In this embodiment, to enable the supporting movable plate 2 to move stably on the movable slide rail, the movable slide rail is a U-shaped movable groove 4 symmetrically formed on the top surface of the base 1. A limiting cover plate 5 is fixed on the base 1 directly above the U-shaped movable groove 4. The inner end of the supporting movable plate 2 is located between the limiting cover plate 5 and the base 1, and a limiting distance is formed between the limiting cover plate 5 and the base 1 to restrict the vertical position of the supporting movable plate 2. The inner end of the supporting movable plate 2 is movably connected to the U-shaped movable groove 4 through a connecting component. That is, the limiting distance formed between the limiting cover plate 5 and the base 1 allows the supporting movable plate 2 to be relatively fixed vertically, while the cooperation structure of the connecting component in the U-shaped movable groove 4 allows the supporting movable plate 2 to move stably relative to each other in the horizontal direction.

[0021] Correspondingly, the damping effect of the damping component can be applied vertically downward to the base 1. In this embodiment, the top sidewall of the base 1 has a trajectory profile surface 6 whose contour corresponds to the trajectory of the movable slide rail. The damping component includes a damping seat 7 disposed on the supporting movable plate 2. The damping seat 7 is located outside the trajectory profile surface 6, and a damping rod 8 with its inner end abutting against the trajectory profile surface 6 is slidably connected to the damping seat 7 along the axial direction of the supporting movable plate 2. A damping spring 9 is provided between the damping seat 7 and the damping rod 8, which has an elastic force that can push the damping rod 8 toward the trajectory profile surface 6.

[0022] The specific structure of the damping spring 9 between the damping seat 7 and the damping rod 8 is as follows: the damping seat 7 has a damping groove 10, the damping rod 8 is fitted through the damping groove 10, the outer end of the damping rod 8 extends out of the damping seat 7 and is fitted with a limiting snap ring 11 that can abut against the side wall of the damping seat 7, the inner end of the damping rod 8 has a limiting step surface that is away from the base 1, the damping spring 9 is fitted on the damping rod 8 located in the damping groove 10, and one end of the damping spring 9 abuts against the limiting step surface and the other end abuts against the corresponding groove wall of the damping groove 10.

[0023] Furthermore, in order to effectively apply the damping force to the trajectory profile surface 6, the damping assembly includes a damping block 12, and the damping rod 8 abuts against the trajectory profile surface 6 through the damping block 12. There are two or more damping rods 8 arranged side by side, and the inner end of each damping rod 8 is fixedly connected to the damping block 12.

[0024] The connecting component can be a ball bearing that rolls within the U-shaped movable groove 4. In this embodiment, the connecting component includes two connecting pins arranged side-by-side on the supporting movable plate 2. The lower end of the connecting pin extends downward into the U-shaped movable groove 4 and is fitted with a connecting bearing 13. The connecting bearing 13 rolls into contact with the sidewall of the U-shaped movable groove 4. The diameter of the connecting bearing 13 is slightly smaller than the width of the U-shaped movable groove 4, so that the two sidewalls of the U-shaped movable groove 4 can provide relative positioning for the connecting bearing 13.

[0025] Meanwhile, to improve the stability of the supporting movable plate 2 when moving left and right relative to the base 1, a movable bearing seat 14 is fixed on the supporting movable plate 2. A movable pin is provided on the movable bearing seat 14 along the axial direction of the supporting movable plate 2, and a movable bearing 15 that rolls or slides on the top surface of the base 1 is fitted on the movable pin. Furthermore, the movable bearing seat 14 is located between the supporting movable plate 2 and the top surface of the base 1, and a damping pad 16 is provided between the supporting movable plate 2 and the limiting cover plate 5, which is fixed on the supporting movable plate 2. Both the supporting movable plate 2 and the damping pad 16 have clearance windows 17 for the placement of the movable bearing 15. There are two movable bearings 15, located on the inner and outer ring sides of the movable slide rail, respectively. The number of movable pins and movable bearings 15 corresponds one-to-one and they are matched.

[0026] The display screen assembly 3 includes a display screen bracket 18 and an LCD screen 19 mounted on the display screen bracket 18. The display screen bracket 18 is hinged to the outer end of the support movable plate 2. The LCD screen 19 is electrically connected to the control assembly of the optometer body. The control assembly controls the display content of the screen information on the LCD screen 19.

[0027] Furthermore, considering that during the vertical rotation of the display screen bracket 18, if the upward rotation angle exceeds 0°, it crosses the horizontal plane. If the image displayed on the LCD screen 19 remains in its original state at this time, the entire image will be displayed upside down, making it inconvenient for the operator to observe and operate. Therefore, in this embodiment, a tilt sensor or position sensor is provided on the display screen bracket 18. The tilt sensor or position sensor is located on the hinge side between the display screen bracket 18 and the supporting movable plate 2. This tilt sensor or position sensor is used to detect the rotation angle of the LCD screen 19 relative to the horizontal plane in real time. The control assembly is electrically connected to the tilt sensor or position sensor, and the control assembly controls the image information of the LCD screen 19 to rotate 180° based on the signal from the tilt sensor or position sensor. If a tilt sensor is used, a common horizontal gyroscope sensor can be selected. If a position sensor is used, multiple calibration structures can be set circumferentially on the supporting movable plate. The position sensor detects different calibration structures to measure the rotation angle.

[0028] The above embodiments are only one of the preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes made in accordance with the shape, structure and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A display screen rotation mechanism for an optometer, characterized in that: The device includes a base (1) fixed to the main body of the optometer. The top of the base (1) has a curved sliding rail with a horizontal orientation. The inner end of a support plate (2) is slidably connected to the sliding rail. A display screen assembly (3) that can flip up and down is hinged to the outer end of the support plate (2). The display screen assembly (3) moves horizontally along the sliding rail to achieve left and right horizontal turning. A damping assembly is provided between the support plate (2) and the base (1). The damping force of the damping assembly is used to suppress the horizontal movement of the display screen assembly (3) along the sliding rail. The base (1) has a top sidewall with a contour surface (6) corresponding to the trajectory of the movable slide rail. The damping assembly includes a damping seat (7) set on the support movable plate (2). The damping seat (7) is located outside the trajectory contour surface (6), and a damping rod (8) with its inner end abutting against the trajectory contour surface (6) is slidably connected on the damping seat (7) along the axial direction of the support movable plate (2). A damping spring (9) with elastic force is provided between the damping seat (7) and the damping rod (8) to push the damping rod (8) toward the trajectory contour surface (6).

2. The display screen rotation mechanism for an optometer according to claim 1, characterized in that: The movable slide rail is a U-shaped movable groove (4) that is symmetrically formed on the top surface of the base (1). A limiting cover plate (5) is fixed on the base (1) directly above the U-shaped movable groove (4). The inner end of the supporting movable plate (2) is located between the limiting cover plate (5) and the base (1), and a limiting distance is formed between the limiting cover plate (5) and the base (1) to limit the up and down position of the supporting movable plate (2). The inner end of the supporting movable plate (2) is movably connected to the U-shaped movable groove (4) through a connecting component.

3. The display screen rotation mechanism for an optometer according to claim 1, characterized in that: The damping seat (7) has a damping groove (10), and the damping rod (8) is fitted through the damping groove (10). The outer end of the damping rod (8) extends out of the damping seat (7) and is fitted with a limiting snap ring (11) that can abut against the side wall of the damping seat (7). The inner end of the damping rod (8) has a limiting step surface that is away from the base (1). The damping spring (9) is fitted on the damping rod (8) located in the damping groove (10), and one end of the damping spring (9) abuts against the limiting step surface and the other end abuts against the corresponding groove wall of the damping groove (10).

4. The display screen rotation mechanism for an optometer according to claim 1, characterized in that: The damping assembly includes a damping block (12), and the damping rod (8) abuts against the trajectory profile surface (6) through the damping block (12). There are two or more damping rods (8) arranged side by side, and the inner end of each damping rod (8) is fixedly connected to the damping block (12).

5. A display screen rotation mechanism for an optometer according to claim 2, characterized in that: The connecting assembly includes two connecting pins arranged side by side on the supporting movable plate (2). The lower end of the connecting pin extends downward into the U-shaped movable groove (4) and is fitted with a connecting bearing (13). The connecting bearing (13) rolls with the groove sidewall of the U-shaped movable groove (4).

6. The display screen rotation mechanism for an optometer according to claim 2, characterized in that: The movable bearing seat (14) is fixed on the movable support plate (2). The movable bearing seat (14) is provided with a movable pin along the axial direction of the movable support plate (2). The movable pin is fitted with a movable bearing (15) that rolls or slides on the top surface of the base (1).

7. A display screen rotation mechanism for an optometer according to claim 6, characterized in that: The movable bearing seat (14) is located between the support movable plate (2) and the top surface of the base (1). A damping pad (16) fixed on the support movable plate (2) is provided between the support movable plate (2) and the limiting cover plate (5). Both the support movable plate (2) and the damping pad (16) are provided with clearance windows (17) for the movable bearing (15) to be placed. There are two movable bearings (15) and they are located on the inner ring side and outer ring side of the movable slide rail, respectively. The number of movable pins and movable bearings (15) are one-to-one and they are matched.

8. The display screen rotation mechanism for an optometer according to claim 1, characterized in that: The display assembly (3) includes a display bracket (18) and an LCD screen (19) mounted on the display bracket (18). The display bracket (18) is hinged to the outer end of the support movable plate (2). The LCD screen (19) is electrically connected to the control assembly of the optometer body. The control assembly controls the display content of the LCD screen (19).

9. The display screen rotation mechanism of an optometer according to claim 8, characterized in that: The display support (18) is equipped with a tilt sensor or a position sensor. The tilt sensor or position sensor is located on one side of the hinge between the display support (18) and the support movable plate (2). The tilt sensor or position sensor is used to detect the flip angle of the LCD screen (19) relative to the horizontal plane in real time. The control assembly is electrically connected to the tilt sensor or position sensor. The control assembly controls the screen information of the LCD screen (19) to be flipped 180° according to the signal of the tilt sensor or position sensor.

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