Torque Wrench Overload Dislocation Ring Design
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Solution Overview
Problem
Conventional torque wrenches suffer from structural damage and reduced lifespan due to the pointed design of overload protection mechanisms, which cause friction and inaccuracy in torque measurement, and may lead to further damage when the dislocation occurs.
Innovation Solution
The introduction of an overload dislocation ring with multiple sides and a containment groove for a roller post, which reduces friction and allows for smoother dislocation, preventing structural damage and improving torque accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pointed ratchet structure is used in the overload protection mechanism, then the dislocation function is achieved, but friction increases and component damage occurs
Solution Approach 1:
The patent replaces the conventional pointed ratchet structure with a curved surface design. The ratchet ring features an arc-shaped engagement surface that contacts the resilient bearing through rolling motion rather than sliding friction. This curvature transformation reduces friction coefficients and prevents the severe wear and damage that occurs with pointed structures, while maintaining the overload dislocation protection function.
Solution Approach 2:
The patent introduces a resilient bearing as an intermediary element between the ratchet ring and the grip handle. This resilient component acts as a mediator that absorbs impact forces and reduces direct mechanical stress during dislocation events. The resilient bearing deforms elastically to accommodate the dislocation motion, preventing direct contact and damage between the ratchet ring and the rigid handle structure.
2Reliability
If the ratchet ring crosses the resilient bearing during dislocation, then overload protection is activated, but the ratchet shape is damaged and torque accuracy is reduced
Solution Approach 1:
The curved engagement surface of the ratchet ring works in conjunction with the resilient bearing to enable smooth dislocation motion. The arc-shaped contact surface ensures that the ratchet teeth maintain their precise geometric shape during the dislocation process, preventing deformation and damage that would compromise torque measurement accuracy.
Solution Approach 2:
The resilient bearing provides pre-positioned cushioning support during the dislocation process. This cushioning effect is built into the design to prevent excessive forces from damaging the ratchet ring's precision teeth, thereby preserving the component's geometric integrity and ensuring continued torque measurement accuracy.
3Reliability
If conventional overload protection structures are used, then dislocation occurs at overload, but further damage may occur if force is continued
Solution Approach 1:
The resilient bearing is positioned to provide cushioning support before and during the dislocation event. When overload occurs and the ratchet ring dislocates, the resilient bearing absorbs the impact energy and prevents the grip handle from striking the torque wrench body with excessive force. This pre-positioned cushioning protection remains effective even if the user continues to apply force, preventing structural damage to the wrench components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The improved design extends the lifespan of the torque wrench, maintains accuracy in torque measurement, and prevents structural damage by ensuring the force is evenly distributed during dislocation, making the torque wrench more durable and practical.
Implementation Method 1
a containment groove 43 is placed between the side surfaces 42 for the roller post 50... the roller post 50 and the joint slot 21 is rolling and touching each other
Implementation Method 2
a resilient component 60, which inside the hollow hole 11 of the grip handle 10, which includes a movable post 61 and a resilient component 62
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The present invention provides a structure of a torque wrench, which comprises a grip handle (10), a sheathing end (20), a directional braking component (30), an overload dislocating ring (40), a roller post (50) and a resilient component (62); the main feature is that an overload dislocation ring is placed between the braking unit (32) of the directional braking component (30) and the joint slot (21) of the sheathing end (20), and its inner edge is an annular edge for the braking unit (32) of the directional braking component (30) to lock in; and its external edge is designed to have multiple sides (42), and a containment groove (43) is placed between the side surface for the roller post (50), and the roller post (50) protrudes out of the opening of the containment groove (43) and tightly touches the joint slot (21); the side surface of the overload dislocation ring (40) is supported by the movable post (61) of the resilient component (62).