Torque Tool Cover Plate Groove Assembly Mechanism
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Solution Overview
Problem
Existing torque tools, such as ratchets, face challenges in assembly and functionality due to insecure cover mechanisms, which can lead to components falling out or being difficult to assemble.
Innovation Solution
A torque tool with a cover plate featuring a protruding tongue that inserts into a groove in the chamber wall, secured by a circlip and spiral retaining ring, ensuring stable assembly and preventing the cover from falling out, while also allowing for easy mounting of the ratchet wheel and switching mechanism components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cover is fixed by means of screws or snap rings as in prior art, then the cover can be secured to the tool head, but the assembly process becomes complex and the cover may still be insecure or difficult to assemble
Solution Approach 1:
The cover is divided into two functional parts: a cover plate that provides structural coverage and a cover disk that provides securing functionality. This segmentation allows each part to be optimized independently - the cover plate for easy assembly and the cover disk for secure retention, resolving the contradiction between reliability and assembly complexity
Solution Approach 2:
The cover disk is positioned to overlie the driven element and work together with the cover plate. The nested arrangement where the cover disk sits on top of the driven element while the cover plate secures it from the side creates a compact, secure assembly that simplifies the overall fastening mechanism while maintaining high reliability
2Ease of operation
If the cover mechanism is simplified for easier assembly, then assembly becomes more rational and easier, but the cover may become insecure and components may fall out
Solution Approach 1:
By separating the cover into a cover plate and cover disk with distinct functions, the system achieves both ease of assembly (through the simple tongue-and-groove mechanism of the cover plate) and security (through the overlying cover disk that prevents component dropout)
Solution Approach 2:
The cover plate acts as an intermediary element that facilitates easy assembly through its tongue insertion into the groove, while the cover disk serves as a secondary intermediary that ensures security by overllying the driven element. This dual-intermediary approach resolves the contradiction between ease of operation and reliability
Data Source
Figure 1~3
Figure 4~5
Figure 6~10
AI summary
The invention relates to a torque tool, particularly a reversible ratchet (1), having a tool head (2), which has a chamber (5) having a chamber wall (7), a floor (8) and an opening (9). A ratchet wheel (6) having an output element (20) is rotatably mounted in the chamber (5). The chamber (5) is covered on the opening side by a cover (31). According to the invention, the cover (31) has a cover plate (32, 49) and a cover disc (33). The cover plate (32, 49) has an outer side edge (34) directed to the chamber wall (7) having a protruding spring (35). A groove (38) is provided in the chamber wall (7), in which groove the cover plate (32, 49) having the spring (35) is inserted. In the inserted position, the cover plate (32) is secured in position by the cover disc (33).