Brake and Speed Reducer Layout With Accelerating Unit for Compact Braking
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Solution Overview
Problem
Existing speed reducing mechanisms require large-sized brakes to maintain posture during emergencies, which occupy significant space and hinder efficient operation.
Innovation Solution
A speed reducing mechanism with an integrated accelerating unit that increases the number of rotations, reducing the necessary braking torque and allowing for a downsized brake unit by positioning the brake unit to overlap the accelerating unit along the central axis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large-sized brake is used to brake the speed reducing unit directly, then sufficient braking ability is achieved, but the brake unit becomes large in size and occupies significant space
Solution Approach 1:
The brake unit is positioned to overlap the accelerating unit along the central axis, with the brake shaft penetrating through the accelerating unit. This nesting arrangement allows the brake unit to be integrated within the existing structure, reducing overall space occupation while maintaining braking capability.
Solution Approach 2:
An accelerating unit is introduced between the speed reducing unit and the brake unit, changing the rotational speed parameter. The accelerating unit increases the number of rotations, which reduces the necessary braking torque required, thereby allowing for a smaller brake unit size.
2Volume of moving object
If the brake unit size is reduced, then space occupation is minimized, but braking ability may be compromised
Solution Approach 1:
The accelerating unit changes the rotational speed parameter by increasing the number of rotations. This parameter change reduces the necessary braking torque, allowing a smaller brake unit to achieve sufficient braking ability. The acceleration ratio is designed to match the braking requirements with the reduced brake size.
Solution Approach 2:
The accelerating unit acts as an intermediary between the speed reducing unit and the brake unit. It transmits and modifies the rotational motion, converting high-torque low-speed rotation into low-torque high-speed rotation, which the smaller brake unit can then effectively brake.
3Volume of moving object
If an accelerating unit is added to reduce brake size, then brake unit size is reduced, but device complexity increases
Solution Approach 1:
The accelerating unit is designed with multi-functionality, serving both to increase rotational speed for brake downsizing and to transmit power between the speed reducing unit and the brake unit. The brake shaft serves multiple purposes: transmitting rotation, penetrating the accelerating unit, and supporting the brake unit.
Solution Approach 2:
The brake shaft is integrated with the accelerating unit structure, with the brake shaft penetrating through the accelerating unit. This merging of components reduces the number of separate parts and simplifies the overall assembly, offsetting the added complexity of the accelerating unit.
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 mechanism achieves a compact design with sufficient braking ability, enhancing operational efficiency and reducing the size of the brake unit without compromising its effectiveness.
Implementation Method 1
a cam provided on the crankshaft; an external-tooth gear configured to oscillate and rotate around the speed reducing central axis by the cam
Implementation Method 2
an outer cylinder including an internal-tooth gear meshing with the external-tooth gear and configured to rotate around the speed reducing central axis
Data Source
Figure 1
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AI summary
A speed reducing mechanism according to the present invention includes: a speed reducing unit for decelerating input rotation; an accelerating unit for accelerating rotation output from the speed reducing unit; and a brake unit for applying a braking force for braking the accelerating unit.