Z-Shaped Securing Ring for Space-Saving Gear Module Bearings
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Solution Overview
Problem
Existing gear modules with snap ring securing of rolling bearings require additional axial installation space and are not always securely fixed.
Innovation Solution
A Z-shaped securing ring with an inwardly oriented installation edge and outwardly extending deformation edge is used to secure the rolling bearing on a shaft, allowing it to be accommodated within the bearing inner ring bore without protrusion, and is fixed by deforming the deformation edge to engage behind the bearing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a conventional snap ring is used to secure the rolling bearing on the shaft end, then the bearing is axially secured, but additional axial installation space is required due to the protruding shaft end
Solution Approach 1:
The securing ring is nested within the bore region of the bearing inner ring, with its deformation edge engaging behind the bearing. This nesting arrangement allows the securing ring to be accommodated within the existing bearing space without requiring additional axial protrusion from the shaft end, thereby saving axial installation space while maintaining secure fixation.
Solution Approach 2:
The securing ring transitions from a conventional planar snap ring to a three-dimensional Z-shaped profile with radially inward and outward extending edges. This dimensional change allows the ring to engage both the shaft groove and the bearing in different radial directions, enabling secure mounting without axial protrusion and eliminating the need for a protruding shaft end.
2Ease of operation
If the shaft end protrudes beyond the bearing face for conventional snap ring installation, then the snap ring can be installed, but the axial space is increased
Solution Approach 1:
The securing ring is preliminarily inserted into the circumferential groove of the shaft before the bearing is mounted. This preliminary positioning allows the ring to be secured in place without requiring axial protrusion, and the bearing is then slid over the ring during assembly, simplifying the overall installation process while saving axial space.
Solution Approach 2:
Instead of having the shaft end protrude to accommodate the securing ring, the invention inverts the approach by having the securing ring accommodate itself within the bearing bore region. The deformation edge engages behind the bearing, reversing the conventional arrangement where the shaft must protrude, thereby eliminating the need for additional axial space.
3Ease of repair
If a detachable snap ring is used for securing the bearing, then the bearing can be removed, but the connection is not as secure as a fixed connection
Solution Approach 1:
The securing ring is deformed from its initial circular shape into a Z-shaped profile with radially outward extending edges that engage behind the bearing. This parameter change in shape creates a fixed connection that is more secure than a detachable snap ring, while the deformation process itself provides the necessary elasticity for installation without requiring detachment mechanisms.
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
This solution saves axial installation space and provides a secure, non-detachable connection for the rolling bearing and adjacent gear, ensuring a play-free installation.
Implementation Method 1
a deformation edge that extends radially outwards in the installed state for engaging behind the rolling bearing plugged thereonto
Data Source
AI summary
The disclosure relates to a gear module for a transmission, having at least one gear which is arranged on a rotatably mounted shaft. For rotatable mounting, the shaft is provided with at least one rolling bearing which is plugged onto an end-face bearing seat section, the rolling bearing being fixed by a securing ring arranged in a circumferential groove of the shaft near the end face in order to axially secure the installation position. The, securing ring has an installation edge oriented radially inwards starting from an axial central section, for engaging into the circumferential groove of the shaft and with a deformation edge, which extends radially outwards in the installed state, for engaging behind the rolling bearing plugged onto the end-face bearing seat section.