Robotic Lawn Mower Assembly With Integrated Sensor and Battery Mounting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing lawn mower robots have complex structures and increased manufacturing costs due to separate components like coil sensor holders, ultrasonic sensor modules, and battery cases, which complicate assembly and lead to repeated collisions with obstacles, resulting in increased costs and process complexity.
Innovation Solution
The lawn mower robot design simplifies the assembly by integrating the coil sensor as a circuit board directly into the inner body, using a transparent ultrasonic sensor frame to eliminate the need for additional windows, and directly fastening the battery to the robot body, reducing the number of parts and simplifying the assembly process while enhancing durability and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a coil sensor holder is separately assembled and then assembled into the inner body, then the coil sensor can be properly mounted, but the structure becomes complicated and the number of assembling processes increases
Solution Approach 1:
The coil sensor holder is integrated directly into the inner body as a unified structure, eliminating the need for separate assembly of the holder and inner body. This merging of components reduces the total number of parts and simplifies the assembly process while maintaining the functional integrity of the coil sensor mounting.
2Reliability
If an IR window and ultrasonic sensor module are separately manufactured and assembled, then the ultrasonic sensor can be protected, but the structure of the case becomes complicated and the number of assembling processes increases
Solution Approach 1:
The IR window is integrated directly into the ultrasonic sensor module case as a unified component. This integration eliminates the need for separate assembly of the window and case, reducing structural complexity while maintaining the protective function and infrared transmission capability.
3Reliability
If a battery case is separately provided and coupled to the robot body, then the battery can be securely mounted, but the manufacturing cost increases and the number of assembling processes increases
Solution Approach 1:
The battery case is integrated directly into the robot body as a unified structure, eliminating the need for separate manufacturing and assembly of the battery case. This integration reduces the total number of parts, lowers manufacturing costs, and simplifies the assembly process while maintaining secure battery mounting through direct fastening to the robot body.
4Device complexity
If the bumper is mounted without additional fastening hooks, then the assembly is simpler, but the bumper gets lifted due to repeated collisions with obstacles
Solution Approach 1:
Fastening hooks are pre-provided on the bumper structure to enable secure attachment to the robot body. This preliminary design feature prevents bumper lifting during operation by ensuring proper fastening points are available before collisions occur, while adding minimal complexity to the overall assembly.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design simplifies the assembly process, reduces manufacturing costs, and enhances the robot's durability by eliminating the need for additional components and complex assembly steps, while maintaining functionality and reducing the risk of collisions and deformation.
Implementation Method 1
the lawn mower robot has a coil sensor, and when the lawn mower robot touches the wire while traveling, the coil sensor senses a contact between the wire and the robot
Implementation Method 2
mount an ultrasonic sensor module in front of an outer body of the robot to sense an obstacle
Implementation Method 3
an infrared ray sensor that recognizes the location of a charging stand for charging is applied to an inside of the ultrasonic sensor module
Data Source
AI summary
A lawn mower robot includes an outer cover; an inner body accommodated into the outer cover to mount wheels for traveling on both sides thereof; wheel drive motors mounted on both sides of the inner body, respectively, to drive the wheels, respectively; a rotating plate rotatably mounted on a bottom surface of the inner body; blades rotatably mounted on the rotating plate to mow the grass; a blade drive motor mounted inside the inner body to rotate the blades together with the rotating plate; a battery mounted inside the inner body to supply power to the wheel drive motor and the blade drive motor; a battery receiving portion extended upward in a protruding manner from a bottom surface of the inner body toward an inner space of the inner body to accommodate the battery therein; and a battery cover mounted to cover the battery receiving portion.