Bidirectional Ratchet Bending Spanner for Tire Screws
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Solution Overview
Problem
Conventional straight spanners are ineffective for locking or unlocking car tire screws due to their inability to reach the recessed screws, and existing bending spanners are limited in range and require tedious back-and-forth operation when trying to drive screws, especially when the tire is elevated.
Innovation Solution
A bidirectional ratchet bending spanner with a hollow handle, a bending tube portion, a holding portion, an engaging element with ratchet teeth, and a switch that allows the spanner to return to its original form, enabling efficient screwing and unscrewing without the need for repeated back-and-forth motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a straight spanner is used to lock or unlock tire screws, then the spanner structure is simple, but the spanner cannot reach the recessed screws and cannot be operated effectively
Solution Approach 1:
The spanner incorporates a bending tube portion with a curved configuration instead of a straight structure. This curvature allows the spanner head to reach into the recessed area of the tire rim where the screws are located, enabling effective engagement with the screw heads that would be inaccessible to a straight spanner.
2Ease of operation
If a bending spanner is used to drive tire screws, then the spanner can reach recessed screws, but the spanner requires tedious back-and-forth operation when the tire is elevated
Solution Approach 1:
The spanner incorporates a ratchet mechanism that allows continuous rotational motion in one direction to drive the screw forward, while automatically preventing backward motion. This eliminates the need to reverse the spanner direction manually, enabling continuous useful action during screw driving operations even when the tire is elevated at limited heights.
Solution Approach 2:
The ratchet mechanism introduces dynamic functionality to the spanner, allowing it to adapt its motion characteristics during operation. The ratchet teeth engage with corresponding surfaces to permit motion in the driving direction while blocking reverse motion, transforming the static bidirectional capability into a dynamically controlled unidirectional driving action.
3Ease of operation
If a bending spanner is used to detach tire screws, then the spanner can reach recessed screws, but the spanner requires repeated back-and-forth motion which is tedious
Solution Approach 1:
The ratchet mechanism enables continuous loosening motion by allowing the spanner to rotate freely in the loosening direction while preventing reverse motion. This continuous action capability significantly improves productivity during screw detaching operations compared to the repeated back-and-forth motion required by conventional spanners.
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 bidirectional ratchet mechanism allows for efficient and quick locking and detaching of tire screws, reducing the effort required and eliminating the need for repetitive back-and-forth operation, enhancing operational efficiency.
Implementation Method 1
one end of the engaging element having a ratchet teeth portion corresponding to the resisting portion; an inner side of the ratchet teeth portion being formed with an annular ratchet teeth
Data Source
AI summary
A tire-assembly spanner which comprises a hollow handle installed with a bending tube portion at one end thereof; another end of the handle being installed with a holding portion; an engaging element installed to one end of the resisting portion far away from the handle; one end of the engaging element having an engaging portion for receiving a sleeve; one end of the engaging element having a ratchet teeth portion corresponding to the resisting portion; an inner side of the ratchet teeth portion being formed with an annular ratchet teeth. A switch is installed in the bending tube portion. A resisting portion is formed between the bending tube portion and the engaging element; the resisting portion has a through hole for receiving a switch.