Safety Hook Latch Guide Arm for Lateral Impact Resistance
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Solution Overview
Problem
Conventional safety hooks are unable to effectively bear strong lateral impact forces, leading to potential damage and deformation of the latch member, which limits their repeated use.
Innovation Solution
The enhanced safety hook design includes a hook body with a pin slot and guide slot, a latch member with a guide arm and pin element, and a spring member, allowing direct distribution of lateral impact forces to the hook body, minimizing deformation and enabling repeated use under significant loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the latch member is pivotally connected to the hook body by a shaft at the top end with the bottom end biasing against the inner side of the hook opening, then the latch member can be简单地 connected to the hook body, but the latch member cannot directly distribute lateral impact force to the hook body, resulting in a long force distribution path that causes deformation and damage
Solution Approach 1:
The latch member is divided into a main body portion and a protruding portion, with the protruding portion extending toward the hook opening to directly bear lateral impact forces. This segmentation allows different parts of the latch member to perform different functions: the main body for pivoting and the protruding portion for force distribution.
Solution Approach 2:
The latch member is designed to extend in multiple directions: the main body pivots on the shaft while the protruding portion extends toward the hook opening. This multi-dimensional configuration creates a short force distribution path that directly transmits lateral impact forces to the hook body, avoiding the long path through the tenon and mortise connection.
2Device complexity
If the latch member distributes lateral impact force through the tenon and mortise engagement of the operation handle, then the connection is simple, but the force distribution path is too long causing damage and deformation
Solution Approach 1:
The protruding portion of the latch member acts as an intermediary element that directly transmits lateral impact forces from the latch member to the hook body. This intermediary structure eliminates the need for force transmission through the operation handle's tenon and mortise engagement, creating a more reliable and direct force path.
3Ease of operation
If the bottom end of the latch member and the bottom side of the hook opening are not stably supported, then the latch member can rotate freely for locking/unlocking, but lateral impact forces cause deformation and damage
Solution Approach 1:
Different parts of the latch member have different functional qualities: the main body portion has pivoting capability for easy operation, while the protruding portion has enhanced structural properties for bearing lateral impact forces. This local differentiation allows the latch to be both easy to operate and stable under impact.
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 enhanced safety hook can withstand at least 1600 kg (3600 pound) impact force without deformation, ensuring higher security and repeated usability.
Implementation Method 1
a spring member retaining the latch member in a position that the latch member tends to lock the hook hole
Implementation Method 2
the guide arm slides in the guide slot for preventing the latch member from having contact with the inner wall of the hook body along the hook hole
Data Source
AI summary
An enhanced safety hook includes a hook body, a latch member, an operation handle and a spring member. The hook body includes a hook hole having a hook opening, a hook end formed at a top end thereof, a pin slot at a position below the hook opening, and a guide slot. The latch member includes a main plate and two side plates define an upside-down U-shape frame, a peripheral edge bridged between the two side plates in such a manner that a top end of the latch member constructs a mouth for receiving the hook end, a guide arm connected to the two side frames to couple with the guide slot, and a pin element coupling with the pin slot. The pin element is movably provided in the pin slot in such a manner that the mouth of the latch member is capable of detaching from the hook end, so that the latch member unlocks the hook opening by means of rotation of the pin element in the pin slot, while the guide arm slides in the guide slot for preventing the latch member from having contact with the inner wall of the hook body along the hook hole. The operation handle has a rotation hole for the pin element to pass through so as to enable the pin element to move in the pin slot. The spring member retains the latch member in a position that the latch member tends to lock the hook hole.