Display screen reset buffer structure

Abstract

The utility model discloses a display screen reset buffer structure relates to intelligent cleaning equipment technical field, apply to cleaning robot, including buffer protection system, the buffer protection system includes permanent magnet, electromagnet, angle sensor and control module, the permanent magnet fixed mounting is on the swing arm device, electromagnet sets up on robot body, and with permanent magnet's movement track interval opposite, angle sensor's detection shaft is with pivot coaxial connection, control module sets up in robot body, the utility model discloses a non -contact type buffer is realized through electromagnetic force, and its effect does not attenuate because of mechanical wear and tear, and long service life is high in reliability. Through angle sensor accurate trigger buffer process to the effect of slow release is realized, and greatly reduces the impact to touch screen in the last stage power failure.

Description

Technical Field

[0001] This utility model relates to the field of intelligent cleaning equipment technology, and in particular to a display screen reset buffer structure. Background Technology

[0002] A commercial cleaning robot is equipped with a touchscreen for display and interaction. To save space and provide protection, the touchscreen is mounted at the end of a rotatable, retractable arm. This arm structure typically achieves hovering via a positioning damper and slowly returns to its original position using the arm's own weight and the damper's resistance.

[0003] However, the following problems were discovered in actual use: First, after prolonged and high-frequency reciprocating motion, the damping grease inside the positioning damper would wear out and deteriorate, resulting in a significant decrease in damping effect and failure of the hovering function. Second, in the later stages of the reset process, due to the increased arm angle and gravitational torque, the angular velocity continuously increased, causing the end-effector touchscreen to impact the storage slot on the robot body with a large impact force. Over time, this not only produces unpleasant noise but also causes irreversible damage to the delicate touchscreen and its internal electronic components, affecting product lifespan and user experience.

[0004] Therefore, there is an urgent need for a new buffer structure that can provide effective buffering during the reset process, especially in the later stages, to compensate for the damper performance degradation and ensure that the display screen can be reset smoothly and gently. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a display screen reset buffer structure that can effectively solve the problems of excessive impact at the end of the swing arm reset and buffer failure after the damper's lifespan has decayed.

[0006] To achieve the above objectives, this utility model provides a display screen reset buffer structure applied to a cleaning robot. The cleaning robot includes a robot body, a swing arm device hinged to the top of the robot body, and a control display at the end of the swing arm device. The top of the robot body has a storage slot for accommodating the swing arm device and the control display. The swing arm device is hinged to the robot body via a rotating shaft, and at least one positioning damper is sleeved on the rotating shaft. It also includes a buffer protection system, which includes a permanent magnet, an electromagnet, an angle sensor, and a control module. The permanent magnet is fixedly mounted on the swing arm device. The electromagnet is disposed on the robot body and is spaced relative to the movement trajectory of the permanent magnet. The detection axis of the angle sensor is coaxially connected to the rotating shaft. The control module is disposed within the robot body. The signal output terminal of the angle sensor is electrically connected to the signal input terminal of the control module, and the control output terminal of the control module is electrically connected to the electromagnet.

[0007] Preferably, the electromagnet is elongated, and its length direction is adapted to the projection of the permanent magnet's trajectory.

[0008] Preferably, the electromagnet is fixed to the dust collection box of the robot body by a mounting bracket.

[0009] Preferably, the electromagnet is fixed to the robot body structure below the storage slot by a mounting bracket.

[0010] Preferably, the angle sensor is fixed on a U-shaped mounting bracket, which is fixed to the robot body, and the positioning damper is sleeved on the rotating shaft and housed in the U-shaped mounting bracket.

[0011] Preferably, the swing arm device includes a swing arm rod, and the permanent magnet is fixed to the side of the swing arm rod near the storage slot.

[0012] Preferably, the control module is the main control board of the cleaning robot or an independent control board that is communicatively connected to the main control board.

[0013] Preferably, the electromagnet and the side of the permanent magnet facing each other are magnetically repelled.

[0014] Compared with related technologies, the display screen reset buffer structure provided by this utility model has the following beneficial effects:

[0015] This invention provides a display screen reset buffer structure that achieves non-contact buffering through electromagnetic force. Its effectiveness is not diminished by mechanical wear, and it boasts a long service life and high reliability. The buffering process is precisely triggered by an angle sensor, and power is cut off at the final stage, achieving a slow release effect and significantly reducing the impact on the touchscreen. This electromagnetic buffer system works in conjunction with the existing mechanical damper, compensating for the latter's performance degradation without over-reliance on a single system, thus improving the overall structural robustness. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a side view of the swing arm device of this utility model.

[0018] Figure 3 This is a schematic diagram of the angle sensor mounting structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the electromagnet mounting structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the electromagnet installation structure according to Embodiment 2 of this utility model.

[0021] Numbered in the diagram: 1. Robot body; 2. Cleaning device; 3. Swing arm device; 4. Control display; 5. Storage slot; 6. Buffer protection system; 31. Swing arm rod; 32. Rotary shaft; 33. Positioning damper; 34. U-shaped mounting bracket; 61. Permanent magnet; 62. Angle sensor; 63. Electromagnet; 64. Mounting bracket; 7. Cover plate. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The following embodiments are for illustrative purposes only and do not constitute a limitation on the scope of protection of the present invention.

[0023] Example 1

[0024] refer to Figure 1 and Figure 2 This embodiment illustrates a specific display screen reset buffer structure. This structure is applied to a cleaning robot, which includes a robot body 1 and a cleaning device 2 at its bottom.

[0025] A swing arm device 3 is hinged to the top of the robot body 1 via a pivot 32. The swing arm device 3 mainly includes a swing arm rod 31. A control display 4 is installed at the end of the swing arm rod 31. A storage slot 5 is provided on the top of the robot body 1 to accommodate the retracted swing arm device 3 and control display 4 when not in use. To achieve the hovering function of the swing arm, a positioning damper 33 is fitted at each end of the pivot 32. These two positioning dampers 33 are fixed to the internal structure of the robot body 1 by U-shaped mounting brackets 34.

[0026] The improvement of this utility model lies in the addition of a buffer protection system 6. It includes:

[0027] Permanent magnet 61: This embodiment uses a rectangular neodymium iron boron permanent magnet 61. A groove-type holder is designed at the position of the swing arm corresponding to the electromagnet, the permanent magnet is embedded in the holder, and fixed with epoxy resin to ensure that it will not fall off during long-term vibration.

[0028] Electromagnet 63: In this embodiment, a long, narrow electromagnet is used. This electromagnet 63 is fixed by a metal mounting bracket 64. The mounting bracket 64 is directly fixed to the top of the dust collection box of the robot body 1 using screws. This mounting position ensures that the long, narrow electromagnet 63 is positioned directly below the storage slot 5, and its length direction is parallel and spaced relative to the arc-shaped trajectory of the permanent magnet 61 during the swing arm's reset process, ensuring an effective and uniform magnetic force throughout the entire buffer stroke.

[0029] Angle sensor 62: This embodiment uses a rotary encoder-type angle sensor 62. The angle sensor 62 is fixedly mounted to the side of one of the U-shaped mounting brackets 34 using screws via mounting ears on its housing. The detection shaft of the angle sensor 62 is fixedly connected to the coaxial end of the rotating shaft 32 via a coupling, thereby enabling direct and accurate measurement of the rotation angle of the rotating shaft 32.

[0030] Control Module: In this embodiment, the control module directly uses the original main control board of the cleaning robot. This main control board is located in the circuit installation area inside the robot body 1.

[0031] The main control board not only receives angle signals but also calculates the real-time angular velocity of the swing arm device 3 based on the changes in the angle signals per unit time. Based on the current angle and the calculated angular velocity, the main control board outputs a current of corresponding magnitude to the electromagnet 63 through its control output terminal. Its control strategy is set as follows: the larger the calculated real-time angular velocity, the larger the current output to the electromagnet 63, resulting in a stronger repulsive magnetic force and providing stronger buffering damping; conversely, the smaller the real-time angular velocity, the smaller the output current and the weaker the magnetic force, thereby achieving a smooth and gradual buffering effect and avoiding energy waste.

[0032] The electrical connections of the aforementioned components are as follows: the signal output terminal of the angle sensor 62 is electrically connected to the corresponding signal input terminal on the main control board via a wiring harness. The main control board is electrically connected to a control output terminal, which is then electrically connected to the power input terminal of the electromagnet 63 via another wiring harness. The side of the electromagnet 63 opposite to the permanent magnet 61, when energized, generates a magnetic field with the same polarity as the magnetic field near the permanent magnet 61, thus creating a repulsive magnetic force.

[0033] The working principle and beneficial effects of this structure are as follows: When the swing arm device 3 performs its reset movement, the rotating shaft 32 drives the detection shaft of the angle sensor 62 to rotate together. The angle sensor 62 transmits the angle signal detected in real time to the main control board through an electrical connection. The main control board has a pre-set program that can output current to the electromagnet 63 through its control output terminal according to the received angle signal. After being energized, the electromagnet 63 generates a magnetic field that repels the permanent magnet 61, thereby applying a reverse damping torque to the reset movement of the swing arm device 3, effectively reducing its angular velocity. Through the connection and control of the above hardware circuit, a non-contact buffering function can be achieved. Its effect is not diminished by mechanical wear, effectively compensating for the performance degradation of the positioning damper 33 and protecting the control display 4 from severe impact at the end of the reset process.

[0034] Example 2

[0035] like Figure 5 As shown, this embodiment has the same basic principle and overall structure as Embodiment 1. The main difference lies in the installation method of the electromagnet 63, which reflects another way of realizing the connection between the mounting bracket 64 and the robot body 1.

[0036] In this embodiment, the mounting bracket 64 is not fixed to the dust collection box, but is directly fixed to the cover plate 7 of the robot body 1 by screws, and its specific installation position is also located directly below the storage slot 5. The electromagnet 63 is fixedly installed on the mounting bracket 64.

[0037] The advantages of this installation method are: firstly, it does not rely on the dust collection box as a detachable component, thus avoiding potential impacts on the installation stability of the electromagnet 63 due to frequent removal and replacement of the dust collection box by the user; secondly, the installation position is more precise and stable, unaffected by the manufacturing tolerances or installation gaps of the dust collection box, ensuring that the relative position between the electromagnet 63 and the permanent magnet 61 always maintains the optimal design state, thereby making the buffering force more consistent and reliable.

[0038] In summary, this invention, through the ingenious combination of an electromagnetic buffer mechanism and an existing mechanical damper, successfully solves the industry problem of display screen swing arm reset impact, significantly improving product durability and user experience.

[0039] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A display screen reset buffer structure, applied to a cleaning robot, the cleaning robot comprising a robot body, a swing arm device hinged to the top of the robot body, a control display being provided at the end of the swing arm device, and a storage slot for accommodating the swing arm device and the control display being provided on the top of the robot body; the swing arm device is hinged to the robot body via a pivot, and at least one positioning damper is sleeved on the pivot; characterized in that: It also includes a buffer protection system, which comprises a permanent magnet, an electromagnet, an angle sensor, and a control module. The permanent magnet is fixedly mounted on the swing arm device. The electromagnet is disposed on the robot body and is spaced relative to the movement trajectory of the permanent magnet. The detection axis of the angle sensor is coaxially connected to the rotating axis. The control module is disposed within the robot body. The signal output terminal of the angle sensor is electrically connected to the signal input terminal of the control module, and the control output terminal of the control module is electrically connected to the electromagnet.

2. The display screen reset buffer structure according to claim 1, characterized in that, The electromagnet is elongated, and its length direction is adapted to the projection of the permanent magnet's trajectory.

3. The display screen reset buffer structure according to claim 1, characterized in that, The electromagnet is fixed to the dust collection box of the robot body by a mounting bracket.

4. The display screen reset buffer structure according to claim 1, characterized in that, The electromagnet is fixed to the robot body structure below the storage slot by a mounting bracket.

5. A display screen reset buffer structure according to claim 1, characterized in that, The angle sensor is fixed on a U-shaped mounting bracket, which is fixed to the robot body. The positioning damper is sleeved on the rotating shaft and housed in the U-shaped mounting bracket.

6. The display screen reset buffer structure according to claim 1, characterized in that, The swing arm device includes a swing arm rod, and the permanent magnet is fixed to the side of the swing arm rod near the storage slot.

7. A display screen reset buffer structure according to claim 1, characterized in that, The control module is the main control board of the cleaning robot or an independent control board that communicates with the main control board.

8. A display screen reset buffer structure according to claim 1, characterized in that, The electromagnet and the permanent magnet are magnetically repelled on opposite sides.

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