Remote control vision detection device

Abstract

According to the technical scheme, the remote control vision detection device is characterized in that the remote control vision detection device comprises a display screen and a remote controller used for controlling the display screen; the remote controller comprises a shell, a circuit board installed in the shell, a limiting column installed on the circuit board, a first button installed on the limiting column, supporting arms arranged on the two sides of the first button, and a second button installed on the first button. The shell is provided with an opening, the second button is provided with a through hole, the second button penetrates through the opening, and the first button penetrates through the through hole and is partially exposed out of the opening; the two side supporting arms are connected with the circuit board and used for supporting the first button. A switch is arranged on the circuit board, the limiting column is located on the switch and connected with the first button, when the first button is pressed, the limiting column moves downwards to abut against the switch, the first button is limited to move downwards excessively, and the technical scheme has the beneficial effects that the service life of the pressed button is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of medical diagnostic and surgical instruments, and more specifically, it relates to a remote-controlled vision testing device. Background Technology

[0002] In ophthalmology settings, visual acuity measurements are often performed using an electronic display screen and remote control. However, the reliability of button rebound and support structures directly impacts operational accuracy and equipment lifespan during this human-computer interaction. Existing technologies primarily employ two solutions: First, shortening the distance between the button and the circuit board switch allows the switch's elasticity to provide rebound and support. However, this structure forces the switch to withstand high-frequency pressing loads over extended periods. Stress concentration at the edge support areas can lead to plastic deformation, and repeated compression causes fatigue and deterioration of the elastic element, ultimately resulting in decreased rebound force, poor contact, and a shortened overall switch lifespan. Second, using an independent support arm structure for load support can alleviate switch stress. However, excessive clearance between the button and support arm can cause the button's downward travel to exceed the design threshold under non-vertical pressing or overload conditions. This can cause the support arm to experience unexpected shear or bending moments, particularly in stress concentration areas where brittle fracture is likely. If the support arm fails, the button loses its reset capability, directly affecting the remote control's functionality.

[0003] For the reasons mentioned above, how to extend the service life of button presses is the problem that this application addresses. Utility Model Content

[0004] To address the shortcomings of existing technologies, a remote-controlled vision testing device is provided, which can extend the lifespan of button presses.

[0005] To achieve the above objectives, the following technical solution is provided: a remote vision testing device, comprising a display screen and a remote control for operating the display screen;

[0006] The remote control includes a housing, a circuit board installed inside the housing, a limiting post installed on the circuit board, a first button installed on the limiting post, support arms disposed on both sides of the first button, and a second button installed on the first button.

[0007] The housing has an opening, the second button has a through hole, the second button passes through the opening, the first button passes through the through hole and is partially exposed outside the opening;

[0008] Both support arms are connected to the circuit board and are used to support the first button;

[0009] The circuit board is provided with a switch, the limiting column is located on the switch and is connected with the first button, when the first button is pressed, the limiting column moves downward and touches the switch, limiting the first button from moving downward excessively.

[0010] Further optimization of the utility model, the first button both sides support arm misplacement setting, the second button is provided with the recess groove corresponding with support arm, part of the support arm is located in the recess groove, and be used for limiting second button rotation.

[0011] Further optimization of the utility model, the second button is provided with the abutment piece, the abutntment piece is used for touching the switch on the circuit board, the abutment piece is provided with the avoidance part corresponding with support arm, the avoidance part is used for the support arm moves.

[0012] Further optimization of the utility model, the limiting column is provided with the guide slot, the first button is provided with the guide key, the guide key is inserted in the guide slot.

[0013] Further optimization of the utility model, the limiting column is made of light guide material, is provided with light source in its inside or corresponding circuit board's end, and light source is guided to the first button by limiting column, and at least a part of the first button is matched with the light transmission of limiting column.

[0014] Further optimization of the utility model, the side of the first button is provided with the convex edge, and the convex edge is used for matching the through hole to limit the first button from being taken out from the through hole.

[0015] Further optimization of the utility model, the circuit board is inclined relative to the remote control bottom, for adapting the natural posture of user's hand.

[0016] Further optimization of the utility model, the second button is arranged along the periphery of the first button, and the second button is inclined towards the center of the first button, and the first button and the second button are matched to further adapt the natural posture of user's hand.

[0017] Further optimization of the utility model, the second button is arranged along the periphery of the first button, and the second button is inclined towards the center of the first button, and the first button and the second button are matched to further adapt the natural posture of user's hand.

[0018] The technical scheme has the following beneficial effects: the limiting column and the support arm are designed separately, preventing the switch from being compressed excessively and the support arm from being broken due to fatigue. ACCURACY OF DRAWINGS

[0019] Figure 1 It is a three-dimensional structure schematic view of a kind of remote controller.

[0020] Figure 2 It is a half cut schematic view of a kind of remote controller.

[0021] Figure 3 It is an exploded schematic view of a remote controller.

[0022] Figure 4 It is a schematic view of a structure of a limiting column and a first button.

[0023] Figure 5 It is a schematic view of a structure of a supporting arm and a second button.

[0024] Figure 6 It is a schematic view of a structure of a display screen.

[0025] Reference signs: 1, display screen; 2, remote controller; 21, shell; 22, circuit board; 23, limiting column; 231, guide groove; 24, first button; 241, guide key; 242, convex edge; 25, supporting arm; 26, second button; 261, recess; 262, abutting part; 2621, avoiding part; 27, through hole. DETAILED DESCRIPTION

[0026] The utility model will be further explained in detail below in combination with the drawings and examples. Same parts are indicated by same reference signs. It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "bottom surface" and "top surface", "inner" and "outer" refer to the directions towards or away from the geometric center of a specific part.

[0027] Referring to Figures 1-6 the drawings, a remote vision detection device includes a display screen 1 and a remote controller 2 for controlling the display screen 1. The remote controller 2 includes a shell 21, a circuit board 22 installed in the shell 21, a limiting column 23 installed on the circuit board 22, a first button 24 installed on the limiting column 23, a supporting arm 25 arranged on both sides of the first button 24, and a second button 26 installed on the first button 24. The shell 21 is provided with an opening, the second button 26 is provided with a through hole 27, the second button 26 passes through the opening, the first button 24 passes through the through hole 27 and is partially exposed outside the opening. Both sides of the supporting arm 25 are connected with the circuit board 22 and used for supporting the first button 24. The circuit board 22 is provided with a switch, the limiting column 23 is located on the switch and connected with the first button 24. When the first button 24 is pressed, the limiting column 23 moves downward and abuts against the switch, thereby limiting the first button 24 from moving downward excessively.

[0028] When the first button 24 is pressed, the limiting column 23 moves downward synchronously with the first button 24 until it contacts the switch on the circuit board 22. Through the limiting function of the limiting column 23, the first button 24 is prevented from being pressed further downward, avoiding damage to the switch due to excessive compression. The two side support arms 25 are connected to the circuit board 22, dispersing the force when the button is pressed downward. When the external force is removed, the first button 24 and the second button 26 are pushed back to the initial position in the opposite direction through the mutual action of the limiting column 23 and the support arm 25, avoiding the switch from being pressed frequently for a long time, thereby significantly reducing the service life of the switch and the risk of poor contact of the contact, and prolonging the service life of the remote controller 2.

[0029] In the optimization, the two side support arms 25 of the first button 24 are arranged in a staggered manner, and the second button 26 is provided with a groove 261 corresponding to the support arm 25, part of the support arm 25 is located in the groove 261, and the support arm 25 is used to limit the rotation of the second button 26.

[0030] The staggered support arm 25 is embedded in the groove 261 of the second button 26. When the user presses the second button 26, the inner wall of the groove 261 and the contact surface of the support arm 25 generate friction, limiting the rotation of the second button 26, and the pressing direction moves along the support arm direction to the plane of the circuit board 22. In daily use, if the second button 26 rotates due to external force, the staggered cooperation of the support arm 25 and the side wall of the groove 261 forms physical limiting through resistance, preventing the rotation angle from exceeding the design threshold, thereby avoiding the offset of the second button 26 causing the pressing to be misaligned with the switch position on the circuit board 22. The structure eliminates the problem of poor contact of the contact or no signal response caused by rotation through the double action of resistance and mechanical limiting, ensuring the operation reliability and the accuracy of switch triggering.

[0031] In the optimization, the second button 26 is provided with a resistance piece 262, the resistance piece 262 is used to resist the switch on the circuit board 22, and the resistance piece 262 is provided with an avoiding part 2621 corresponding to the support arm 25, and the avoiding part 2621 is used to move the support arm 25.

[0032] The resistance piece 262 directly contacts the switch on the circuit board 22, and the pressing force of the second button 26 is transmitted to the switch to trigger the signal. The avoiding part 2621 provides a channel for the movement of the support arm 25, ensuring that the support arm 25 can slide freely in the groove 261. Through the avoiding part 2621, the internal space layout of the button is optimized, avoiding the addition of additional components, thereby reducing the overall size of the remote controller 2, reducing the structural complexity and improving the portability.

[0033] In the optimization, the limiting column 23 is provided with a guide groove 231, and the first button 24 is provided with a guide key 241, and the guide key 241 is inserted into the guide groove 231.

[0034] The guide key 241 and the guide slot 231 are inserted and matched to form an axial sliding pair, the first button 24 moves along the axial direction of the limiting column 23, reduces the deviation in the pressing process, avoids the bending of the supporting arm 25, and further improves the button operation precision and structural durability.

[0035] In the optimization, the limiting column 23 is made of light guide material, a light source is arranged inside or at the end corresponding to the circuit board 22, and the light source is guided to the first button 24 through the limiting column 23, and at least a part of the first button 24 is matched with the limiting column 23 to transmit light.

[0036] The light emitted by the light source is conducted to the light transmission area of the first button 24 through the light guide material limiting column 23, forming a button backlight function. The light guide path is designed in an integrated manner with the mechanical structure of the limiting column 23, avoiding the complexity of the structure caused by the additional light guide channel, and the light transmission area facilitates the user to trigger the button.

[0037] In the optimization, the side surface of the first button 24 is provided with a protruding edge 242, which is used to limit the first button 24 from being pulled out of the through hole 27.

[0038] The diameter of the through hole 27 is smaller than the diameter of the protruding edge 242 of the side surface of the first button 24, and the size difference forms a mechanical limit. When the first button 24 rebounds under external force, the protruding edge 242 is in contact with the second button 26, and the rebound kinetic energy is offset by the contact, reducing the impact force at the moment of button reset. If the protruding edge 242 is not provided, only the elastic reset of the supporting arm 25 is relied on, and in long-term high-frequency pressing, the supporting arm 25 needs to bear additional rebound stress, which is easy to cause brittle fracture due to fatigue accumulation. The limiting action of the protruding edge 242 disperses the rebound force to the edge of the through hole 27, avoiding the bearing of the supporting arm 25 alone, thereby prolonging the service life.

[0039] In the optimization, the circuit board 22 is inclined relative to the bottom of the remote control, which is used to adapt to the natural posture of the user's hand.

[0040] The inclination angle of the circuit board 22 is designed according to ergonomics, so that the surface is naturally placed by the user's fingers when holding the remote control 2. This design reduces the fatigue feeling of operation, and at the same time makes the button pressing direction consistent with the user's force direction, avoiding the lateral force of the supporting arm 25 caused by the deviation of the force angle, further prolonging the service life of the structure.

[0041] In the optimization, the second button 26 is arranged around the first button 24, and the second button 26 is inclined to the center direction of the first button 24, and the first button 24 and the second button 26 are matched with each other to further adapt to the natural posture of the user's hand.

[0042] The second button 26 is arranged around the first button 24 and is inclined to the center, forming an operation interface conforming to the finger curvature. When the user holds the remote control 2, the thumb can naturally cover the inclined surface of the second button 26.

[0043] The above merely describes preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solution falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary skilled persons in the art, some improvements and refinements without departing from the principles of the present application shall also be considered as falling within the protection scope of the present application.

Claims

1. A remote-controlled vision testing device, characterized in that, It includes a display screen and a remote control for operating the display screen; the remote control includes a housing, a circuit board installed inside the housing, a limiting post installed on the circuit board, a first button installed on the limiting post, support arms disposed on both sides of the first button, and a second button installed on the first button; The housing has an opening, the second button has a through hole, the second button passes through the opening, the first button passes through the through hole and is partially exposed outside the opening; Both support arms are connected to the circuit board and are used to support the first button; A switch is provided on the circuit board, and the limiting post is located on the switch and connected to the first button. When the first button is pressed, the limiting post moves down and abuts against the switch, limiting the first button from moving down too far.

2. The remote-controlled vision testing device according to claim 1, characterized in that, The first button has its two support arms offset from each other, and the second button has a groove corresponding to the support arm. Part of the support arm is located in the groove and is used to restrict the rotation of the second button.

3. The remote-controlled vision testing device according to claim 2, characterized in that, The second button is provided with an abutment for abutting a switch on the circuit board. The abutment is provided with a clearance portion corresponding to the support arm for the support arm to move.

4. The remote-controlled vision testing device according to claim 1, characterized in that, The limiting post is provided with a guide groove, and the first button is provided with a guide key, which is inserted into the guide groove.

5. The remote-controlled vision testing device according to claim 4, characterized in that, The limiting post is made of light-guiding material, and a light source is provided inside it or at the end of the corresponding circuit board. The light source is guided to the first button through the limiting post, and at least a part of the first button is light-transmitting in conjunction with the limiting post.

6. The remote-controlled vision testing device according to claim 5, characterized in that, The first button has a raised edge on its side, which is used to cooperate with the through hole to prevent the first button from being dislodged out of the through hole.

7. The remote-controlled vision testing device according to claim 6, characterized in that, The circuit board is tilted relative to the bottom of the remote control to accommodate the user's natural hand posture.

8. The remote-controlled vision testing device according to any one of claims 1-6, characterized in that, The second button is arranged around the first button, and the second button is tilted towards the center of the first button. The first button and the second button are adapted to the user's natural hand posture.

9. The remote-controlled vision testing device according to claim 7, characterized in that, The second button is arranged around the first button, and the second button is tilted towards the center of the first button. The first button and the second button complement each other to further adapt to the user's natural hand posture.

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