Compact Torque Coupling with Sandwiched Drive Arms
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Solution Overview
Problem
Existing torque transmission couplings have a large axial length due to their design, which is inefficient for compact applications.
Innovation Solution
A coupling design featuring a first connecting member with projecting members and a metallic engaging member, and a second connecting member with drive arms that sandwich between the projecting members, along with a cushioning member to reduce axial length, allowing for compact coaxial connection of rotary shafts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each connecting member comprises a base with cushioning arms, then the coupling provides reliable torque transmission, but the axial length becomes large
Solution Approach 1:
The invention merges the base structure into the connecting members themselves, making the connecting members integral to the torque transmission path. The first connecting member includes a first base and second base that directly engage with the second connecting member through drive arms, eliminating the need for separate cushioning member bases. This integration reduces the axial length while maintaining reliable torque transmission through the interconnected base structures.
Solution Approach 2:
The invention implements a nested configuration where the drive arms of the second connecting member are sandwiched between the first base and second base of the first connecting member. The cushioning member is positioned within the space defined by these nested bases, allowing compact axial arrangement. This nesting enables multiple functional elements to occupy overlapping axial spaces, significantly reducing the overall coupling length.
2Stability of the object's composition
If the coupling uses traditional connecting members with bases, then it provides stable connection, but the axial dimension is not compact
Solution Approach 1:
The invention segments the first connecting member into distinct functional portions: a first base for engagement with the second connecting member, and a second base that extends axially to provide additional connection points. This segmentation allows each base portion to perform specific stabilization functions while maintaining a compact overall axial dimension. The drive arms are similarly segmented to engage with specific portions of the bases, distributing the connection stability requirements across multiple discrete elements.
Data Source
AI summary
A torque transmission assembly has a first shaft, a second shaft and a coupling. The coupling has a first connecting member and a second connecting member. The first connecting member is coaxially fixed to the first shaft. The second connecting member is fixed to the second shaft. The first connecting member has a base with a metallic engaging member embedded inside. The engaging member directly connects to the first shaft. A plurality of projecting members is formed on the base. The projecting members extend in the axial direction and are circumferentially spaced. The second connecting member has a main body and a plurality of drive arms radially extending from the main body. The drive arms are sandwiched between corresponding projecting members of the first connecting member so that the first connecting member and the second connecting member rotate together.