Brake Triggering Device for Robot Arm
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Solution Overview
Problem
Existing brake triggering devices for robot arms suffer from insufficient braking torque due to unbalanced forces and varying engagement friction, leading to potential deformation and increased power consumption.
Innovation Solution
A ring-shaped controlling plate with a pivot and movable end actuated by a solenoid, featuring pressing protrusions that distribute force evenly to enhance braking torque and structural strength, and a brake disk with guiding slots for smooth engagement and disengagement of the ratchet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the solenoid exerts actuating force on only one supporting arm, then the brake can be triggered, but unbalanced forces cause deformation of the controlling plate and affect braking performance
Solution Approach 1:
The single actuating force is segmented into two symmetric forces by applying the solenoid's movement to one supporting arm while using the U-shaped controlling plate's structure to distribute this force to both supporting arms equally, eliminating unbalanced forces and deformation
Solution Approach 2:
The controlling plate structure acts as a counterbalancing mechanism where the force applied to one supporting arm is counterbalanced by an equal and opposite force on the other supporting arm, preventing deformation of the controlling plate
2Reliability
If the ratchet is pressed against the engaging pins with greater load, then the engagement is more secure, but the detachment becomes difficult and requires elevated actuating force, wasting electric power
Solution Approach 1:
The design moves the engagement interaction from direct radial contact to tangential contact through the guiding slots, changing the dimension of force application. This allows the ratchet to engage securely during rotation while enabling easy detachment through minimal axial movement of the engaging pins along the guiding slots
Solution Approach 2:
The guiding slots act as an intermediary mechanism between the ratchet and engaging pins, mediating the engagement and detachment process. The slots guide the pins' movement path, allowing secure engagement during operation while facilitating easy release with minimal force
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 solution provides a stable and efficient braking mechanism with increased torque and reduced power consumption by evenly distributing the solenoid's force, ensuring precise control and improved structural integrity.
Implementation Method 1
A solenoid is disposed above the movable end of the controlling plate for pushing or releasing the movable end
Implementation Method 2
The at least one restoring spring is positioned between the engaging plate and the brake disk
Implementation Method 3
the rotation of the ratchet 7 is stopped. The shaft 4 is then stopped along with the hindered ratchet 7 via a braking friction provided by a brake disk 8
Data Source
AI summary
A brake triggering device for a robot arm is provided in the invention, and the brake triggering device includes a controlling plate with an enhanced structural strength by its annularly symmetrical structure. By designating an end of the ring-shaped controlling plate as a pivot and actuating the opposite end, a movable end, with a solenoid, pressing protrusions protruding from the two sides of an inner rim of the controlling plate can provide a greater torque for braking.