Modular Gear Unit Tool-Free Assembly
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Solution Overview
Problem
Existing connecting rod devices with gears are difficult to detach and replace without damage, making it challenging to maintain or replace a defective gearbox.
Innovation Solution
A gear design with a connecting rod coupling element that can be easily coupled and decoupled from a transmission coupling element, using a pin or pin recess configuration, allowing for tool-free assembly and secure fixation using L-shaped tabs and recesses, enabling intuitive assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If coupling catches are introduced into locking slots by a light blow of a hammer and secured by a locking wedge, then the connection between gear and connecting rod device is secure, but the connection becomes difficult to detach without destruction
Solution Approach 1:
The connection system is segmented into distinct components: coupling catches on the gear, locking slots on the cover rail, and a locking wedge. This segmentation allows the connection to be assembled by inserting catches into slots and secured by the wedge, while maintaining the ability to detach by reversing the process without destruction.
2Stability of the object's composition
If a locking wedge is inserted into a remaining opening to secure the connection, then the connection is firmly fixed, but replacement of a defective gearbox becomes difficult
Solution Approach 1:
The coupling catches are preliminarily positioned on the gear, and the locking slots are pre-formed on the cover rail. During assembly, the catches are inserted into the slots and then the locking wedge is inserted to secure the connection. This preliminary preparation of components enables firm fixation while maintaining ease of replacement by simply reversing the assembly steps.
3Manufacturing precision
If the gear is rotated about the pivot point up to a stop to achieve form-fitting connection, then the gear is securely fixed to the connecting rod device, but the assembly process requires precise positioning
Solution Approach 1:
The gear and connecting rod device are designed with self-aligning features including the pivot point, stop, and form-fitting connection elements. During assembly, the gear is placed on the connecting rod device and rotated about the pivot point until the stop is reached, at which point the form-fitting connection automatically secures the gear without requiring additional tools or complex positioning procedures.
Data Source
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AI summary
The invention relates to a transmission (12) for actuating an operating rod (16), an operating rod device (14) having an operating rod (16) and an assembly (10) which has a transmission (12) and an operating rod device (14). The transmission (12) has a transmission piece (80), which can be actuated by an actuating element, and an operating rod coupling element (34), which can be driven at least indirectly by the transmission piece (80) and which can be coupled to a corresponding transmission coupling element (32) of an operating rod (16), wherein the operating rod coupling element (32) defines a point of rotation around which an operating rod device (14) having the operating rod (16) can be rotated from an assembly position up to a stop in an end position in order to connect the operating rod (16) to the transmission (12).