Camshaft Adjuster Locking Bolt Slotted Gate Design
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Solution Overview
Problem
Existing camshaft adjusters require at least three locking bolts to secure components in central and end angular positions, which increases size and complexity, often leading to space constraints and inefficiencies.
Innovation Solution
The design incorporates at least one end slotted gate on the second component, allowing one or two locking bolts to engage in both central and end angular positions, reducing the number of bolts needed while maintaining secure locking capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If three locking bolts are used to secure components in central and end angular positions, then locking reliability is improved, but device complexity and size increase
Solution Approach 1:
The locking bolt is designed to perform multiple locking functions by engaging with different slotted gates (central slotted gate and end slotted gate) at different angular positions. This multi-functional design allows a single locking bolt to secure the rotor in both central and end positions, eliminating the need for separate locking bolts for each position and thereby reducing device complexity while maintaining locking reliability.
Solution Approach 2:
The locking bolt is made movable along the rotation axis and can dynamically switch between engaging the central slotted gate and the end slotted gate depending on the rotor's angular position. This dynamic capability allows the same locking bolt to adapt to different locking requirements (central position locking and end position locking), reducing the total number of locking bolts needed while ensuring reliable locking at all required positions.
2Reliability
If three locking bolts are used to secure components in central and end angular positions, then locking reliability is improved, but the overall size of the camshaft adjuster increases
Solution Approach 1:
The locking bolt is designed to perform multiple locking functions by engaging with different slotted gates (central slotted gate and end slotted gate) at different angular positions. This multi-functional design allows a single locking bolt to secure the rotor in both central and end positions, eliminating the need for separate locking bolts for each position and thereby reducing device complexity while maintaining locking reliability.
Solution Approach 2:
The functionality of multiple locking bolts (three bolts for central and end position locking) is merged into a single locking bolt that can engage with both the central slotted gate and the end slotted gate. This merging reduces the number of locking bolts from three to one, significantly reducing the overall size and volume of the camshaft adjuster while maintaining the required locking reliability at all angular positions.
3Reliability
If more locking bolts are used to ensure secure locking in multiple positions, then locking security is improved, but installation space for other components is reduced
Solution Approach 1:
The locking bolt is designed to perform multiple locking functions by engaging with different slotted gates (central slotted gate and end slotted gate) at different angular positions. This multi-functional design allows a single locking bolt to secure the rotor in both central and end positions, eliminating the need for separate locking bolts for each position and thereby reducing device complexity while maintaining locking reliability.
Data Source
AI summary
A camshaft adjuster having a first component, a second component rotatable relative to the first component within an angular range, and a locking device for locking the first component relative to the second component. The locking device includes a first locking bolt and a second locking bolt on the first component and a central slotted guide on the second component, and wherein the two locking bolts are movably guided between a locking position and an unlocking position and engage in the central slotted guide in a central angular position relative to one another in their locking position. At least one terminal slotted guide, in which the first locking bolt or the second locking bolt engages in its locking position in a terminal angular position differing from the central angular position of the components, is arranged on the second component.