Screw-Driven Mechanical Joint for Foldable Robotic Arm Storage
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Solution Overview
Problem
Existing self-moving cleaning devices, such as intelligent sweeping robots, lack an efficient mechanical arm mechanism that allows for flexible movement and obstacle grasping, limiting their operational range and storage efficiency.
Innovation Solution
A mechanical joint system with a rotatable base and support arm, featuring a first guiding nut, screw rod, and driving part, enables the support arm to be raised or lowered relative to the base, allowing for a foldable and compact design that expands the operational range and storage capabilities of the mechanical arm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mechanical arm is added to self-moving cleaning devices to achieve grasping or movement of obstacles, then the operational range and functional capabilities are improved, but the device complexity and structural dimensions increase
Solution Approach 1:
The support arm is designed to be foldable and nestable within the body or other structural components when not in use. The support arm can be rotated and folded to a storage position, effectively reducing the overall structural dimensions and complexity while maintaining full operational capabilities when deployed.
Solution Approach 2:
The mechanical joint incorporates a dynamic raising and lowering mechanism using a screw rod and guiding nut assembly. The support arm can be dynamically adjusted between extended and retracted positions, allowing the system to adapt its configuration based on operational needs, thereby improving versatility without permanently increasing structural complexity.
2Volume of moving object
If the support arm is made foldable to reduce storage dimensions, then the compactness is improved, but the mechanism complexity increases
Solution Approach 1:
The support arm is designed to nest within the body or other structural components when folded. The foldable connection allows the support arm to be stored in a compact configuration, significantly reducing storage dimensions while using a relatively simple hinge and locking mechanism.
Solution Approach 2:
The raising and lowering mechanism of the foldable support arm is integrated with the existing mechanical joint structure. The screw rod and guiding nut assembly serves dual purposes: both for adjusting the support arm position and for enabling the folding action, thereby reducing overall mechanism complexity rather than adding separate systems.
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
The mechanical joint system provides a simple and reliable mechanism for the mechanical arm, enabling it to adapt to different functional requirements while maintaining a compact structure and enhancing operational flexibility and storage efficiency.
Implementation Method 1
a first driving part arranged on the support arm, a first end of the first screw rod connected to the first driving part, a second end of the first screw rod passing through the first guiding nut and facing the rotatable base, wherein the first driving part is configured to drive the first screw rod to rotate
Data Source
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AI summary
A mechanical joint, a mechanical arm, and a self-moving cleaning apparatus. The mechanical joint comprises: a first guide nut (210), a first screw rod (230) and a first driving portion (220), wherein the first guide nut is in threaded connection with the first screw rod and is hinged to a rotating seat (55); the first driving portion is arranged on a supporting arm (60); a first end of the first screw rod is connected to the first driving portion, and a second end of the first screw rod passes through the first guide nut and is configured to face the rotating seat; and the first driving portion is configured to drive the first screw rod to rotate, so that the first screw rod and the first guide nut move relative to each other to drive the supporting arm to ascend or descend relative to the rotating seat. The mechanical joint is applied to a mechanical arm (001). The mechanical arm comprises a rotating seat and a supporting arm hinged to the rotating seat. The self-moving cleaning apparatus comprises the mechanical arm.