Transmission Brake Layout Within the Case to Minimize Size
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Solution Overview
Problem
The integration of a brake mechanism in a transmission with an electric motor can lead to an increase in the size of the transmission, which is undesirable, particularly in compact mobility vehicles like unmanned carrier vehicles.
Innovation Solution
A transmission design that includes an input shaft, an output shaft, a transmission mechanism, a case, and a brake mechanism, where the brake mechanism is housed within the case, minimizing the overall size of the transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a brake mechanism is integrated into the transmission, then the braking function is provided, but the size of the transmission increases
Solution Approach 1:
The brake mechanism is merged with the transmission mechanism by utilizing the case as a common housing for both components. The brake mechanism is positioned inside the case, sharing the same spatial envelope as the transmission mechanism, thereby providing braking function without increasing the overall transmission size.
Solution Approach 2:
The brake mechanism is nested within the case that already houses the transmission mechanism. By placing the brake mechanism inside the existing case volume, the design avoids additional external space requirements while still providing the necessary braking function.
2Volume of moving object
If the brake mechanism is placed inside the case, then the transmission size is minimized, but the brake mechanism space is constrained
Solution Approach 1:
The brake mechanism is arranged in the radial direction relative to the input shaft, utilizing the radial space within the case. This dimensional arrangement allows the brake mechanism to be positioned without increasing the axial or overall external dimensions of the transmission.
Data Source
AI summary
A transmission includes: an input shaft; an output shaft that extends in an extending direction of the input shaft; a transmission mechanism that is configured to change a rotational speed of rotation outputted from the input shaft, and to transmit the rotation to the output shaft; a case that receives the input shaft, the output shaft and the transmission mechanism; and a brake mechanism that is configured to apply a braking torque to at least one of the input shaft and the output shaft. The brake mechanism is received at an inside of the case.