Robot Handrail Locking Mechanism for Space-Saving Mobility

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Solution Overview

Problem

Conventional robot handrails occupy a large space and are fixed, limiting mobility and usability.

Innovation Solution

A rotatable handrail mechanism with a locking and unlocking system, utilizing a locking member and pin configuration to stabilize the handrail at a preset angle and allow for adjustable rotation, facilitated by a connecting pin and unlocking mechanism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If a fixed handrail structure is used on the robot body, then the handrail provides stable support for users, but it occupies a large space and limits mobility

Engineering Contradiction:
Improvehandrail stabilityVSAvoidspace occupation
Core Design Contradiction:
Stability of the object's compositionVSVolume of moving object

Solution Approach 1:

The handrail is designed to rotate relative to the robot body through a hinge connection, transforming from a fixed static structure to a dynamic adjustable one. This allows the handrail to change its position and orientation based on user needs, reducing space occupation when not in use while maintaining stability when needed.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The handrail system is divided into separate components: the handrail itself, the hinge mechanism, and the locking mechanism. This segmentation allows the handrail to be independently positioned and locked at different angles, providing stability when required while minimizing space when repositioned.

Inventive Principle:
Principle #1Segmentation

2Volume of moving object

If a rotatable handrail mechanism is implemented, then mobility and space utilization are improved, but the device complexity increases due to locking and unlocking mechanisms

Engineering Contradiction:
Improvespace occupationVSAvoidlocking mechanism complexity
Core Design Contradiction:
Volume of moving objectVSDevice complexity

Solution Approach 1:

The locking mechanism utilizes the rotational movement of the handrail itself to trigger the locking action. As the handrail rotates to a predetermined angle, the connecting pin automatically engages with the limiting groove, locking the handrail in place without requiring additional actuators or complex control systems.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The limiting groove is pre-configured at a specific angle on the robot body. When the handrail rotates to this predetermined position, the connecting pin automatically aligns and engages with the groove, providing automatic locking without requiring user intervention or complex control mechanisms.

Inventive Principle:
Principle #10Preliminary action

3Stability of the object's composition

If the handrail is locked at a preset angle, then the handrail maintains stable position for user support, but the ease of operation is reduced due to locking and unlocking requirements

Engineering Contradiction:
Improvehandrail position stabilityVSAvoidhandrail adjustment ease
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The handrail can be freely rotated when unlocked, allowing easy adjustment to different positions. When the user releases the locking mechanism, the handrail becomes dynamic and can be positioned as needed, combining ease of operation with stable positioning when locked.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The handrail system transitions between two states: locked and unlocked. In the unlocked state, the handrail has high mobility for easy adjustment. In the locked state, the handrail maintains a fixed position for stable support. The simple locking mechanism allows quick transition between these states.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS20250319586A1robot
Publication Date: 2025.10.16 SHENZHEN PUDU TECH CO LTD
  • US20250319586A1 patent drawing
  • US20250319586A1 patent drawing
  • US20250319586A1 patent drawing

AI summary

A robot included a body, a handrail on which an assembly member (210) is disposed, locking mechanisms, and unlocking mechanisms. The assembly member is provided with first limiting grooves and a connecting pin. The locking mechanisms include locking members and locking bolts connected to the body (100) and hinged with the assembly member. The locking members are provided with second limiting grooves. The locking bolts can move along an axial direction of the second limiting grooves and move into the first limiting grooves and the second limiting grooves. The unlocking mechanisms are used to drive the connecting pin to move along an axial direction of the first limiting grooves so as to drive the locking bolts to detach from the first limiting grooves.