Micro-Motion Open-Ended Wrench with Dual-Jaw Drive Switching
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Solution Overview
Problem
Existing open-ended wrenches have inefficiencies in narrow environments due to a 60-degree reverse idling return angle, limiting their operational efficiency and versatility.
Innovation Solution
A micro-motion open-ended wrench with an actuating block and dual jaws that alternately engage with the screw workpiece, reducing the reverse idling return angle to 20-40 degrees, allowing efficient operation in tight spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional open-ended wrench with a 60-degree reverse idling return angle is used, then the wrench can drive the screw workpiece to rotate in the clockwise direction, but the reverse idling return angle is too large causing operational inefficiencies in narrow environments
Solution Approach 1:
The wrench is segmented into two distinct drive portions (front drive portion and rear drive portion) that can alternately engage with the screw workpiece. The actuating block can switch between these two portions, allowing the wrench to reduce its effective reverse idling return angle by engaging different segments during the rotation cycle, thereby improving operational efficiency in narrow environments.
2Productivity
If the reverse idling return angle is reduced to improve operational efficiency, then the wrench can operate better in narrow environments, but the structural complexity increases due to the actuating block and dual drive portions
Solution Approach 1:
The actuating block merges the functions of engaging both the front drive portion and rear drive portion into a single component. This block can alternately connect to either drive portion, combining the functionality of two separate engagement mechanisms into one integrated component, thereby reducing overall device complexity while maintaining the ability to reduce reverse idling return angle.
Solution Approach 2:
The actuating block serves multiple functions: it engages with the screw workpiece through both drive portions, controls the alternating engagement between front and rear drive portions, and enables the wrench to adapt to different operational requirements. This multi-functionality reduces the need for additional components, thereby managing device complexity while improving productivity.
Data Source
AI summary
The present invention provides a micro-motion open-ended wrench, wherein a actuating block is arranged in a chute of a head seat for displacement in the first to second positions. The actuating block maintains the first position by a spring. A clockwise claw has a front drive portion and a rear drive portion arranged thereon. The actuating block has a first jaw and a second jaw disposed in the opening. When the actuating block is in the first position, the first jaw and the front drive portion can be engaged with the wrench part. When the handle is returned idly in the reverse direction, the actuating block can be moved to the second position to switch the second jaw and the rear drive portion to engage the wrench part, and the screw workpiece is driven to rotate in the clockwise direction by alternating force to reduce the reverse idling return angle.