Flanged Hinge Bearing Structure to Prevent Bearing Loss
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Solution Overview
Problem
Conventional hinges with bearings are prone to falling off during disassembly for repair, leading to increased repair costs and inconvenience due to the risk of loss and damage.
Innovation Solution
A hinge device with flanged bearings that are fixedly connected to the shaft sleeves of the hinge leaves, using connecting portions that are embedded or integrally formed with the shaft sleeves, ensuring the bearings remain attached during disassembly and assembly, and reducing friction through rolling motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If bearings are added to improve rotation smoothness, then rotation smoothness is improved, but bearings are likely to fall off during disassembly
Solution Approach 1:
The patent adds a flange structure to the bearing, extending it in a new dimensional direction (radially outward) to create a stopping surface. This dimensional extension prevents the bearing from falling off the rotating shaft during disassembly while maintaining its rotation smoothness function.
Solution Approach 2:
The flange acts as an intermediary element between the bearing and the rotating shaft. It provides a mechanical interface (stopping surface) that mediates the connection, preventing the bearing from detaching during disassembly operations.
2Ease of manufacture
If bearings are sleeved on the rotating shaft for easy installation, then installation ease is improved, but bearings may slip off and get lost during repair
Solution Approach 1:
By extending the bearing radially outward to include a flange with a stopping surface, the patent adds a dimensional feature that prevents axial displacement. This maintains the simple sleeving installation method while eliminating the risk of bearing loss during repair.
3Device complexity
If conventional hinge structure is used to simplify design, then device complexity is reduced, but service life is shortened due to loosening and noise
Solution Approach 1:
The patent segments the bearing into two functional parts: the bearing body (for rotation) and the flange (for retention). This segmentation allows the bearing to simultaneously achieve smooth rotation and prevent loosening, extending service life without significantly increasing overall structural complexity.
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
Prevents bearing loss and damage, extends service life, improves assembly efficiency, and enhances user experience by ensuring smooth rotation and reducing friction.
Implementation Method 1
a first groove is formed in one surface of the upper cover plate facing the lower cover plate, a second groove is formed in one surface of the lower cover plate facing the upper cover plate, and the plurality of steel balls are disposed between the upper cover plate and the lower cover plate, and roll along the first groove and the second groove
Data Source
AI summary
Provided in the present utility model is a hinge device, including a first hinge leaf provided with first shaft sleeves, a second hinge leaf provided with second shaft sleeves, a rotating shaft, and flanged bearings, where both the first shaft sleeves and the second shaft sleeves are sleeved on the rotating shaft, each flanged bearing includes a bearing body and a housing in which the bearing body is disposed, the housing is further provided with a connecting portion, and the connecting portions are fixedly connected to either the first shaft sleeves or the second shaft sleeves. According to the hinge device, relative rotation between the first hinge leaf and the second hinge leaf is improved by the flanged bearings, so that the flanged bearings can be removed together with the first hinge leaf or the second hinge leaf, thus avoiding the risk that the flanged bearings fall off.