Drawer Slide Locking Structure for Low-Friction Bearing Retention
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Solution Overview
Problem
Existing drawer slide systems face issues with the durability of elastic structures for holding the bearing carrier, noise and friction during operation, and lack of cushioning, leading to premature wear and poor user experience.
Innovation Solution
The system incorporates a locking piece with leverage wings and a hooking portion to securely hold the bearing carrier, an elastic ring on the limiting piece for cushioning, and a fender with spacers to reduce friction between rails, enhancing durability and reducing noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an elastic structure is used to hold and lock the bearing carrier, then the bearing carrier can be temporarily secured, but the elastic structure is vulnerable to wear and friction leading to premature failure
Solution Approach 1:
The patent replaces the elastic structure with a locking piece that utilizes leverage principle and hooking portion to engage with the bearing carrier. This mechanical substitution eliminates the elastic components that are susceptible to wear and fatigue, providing a more durable locking mechanism that relies on geometric engagement rather than elastic deformation.
Solution Approach 2:
The invention extracts and removes the elastic structure from the locking mechanism, replacing it with a rigid locking piece that has a hooking portion. By taking out the problematic elastic components, the design eliminates the source of wear and friction while maintaining the essential function of temporarily securing the bearing carrier.
2Object-affected harmful factors
If the limiting piece directly contacts the bracket without a buffer, then the structure is simple, but noise and friction increase during operation
Solution Approach 1:
The patent introduces a buffer between the limiting piece and the bracket to provide cushioning before contact occurs. This beforehand cushioning reduces the impact and friction during operation, thereby decreasing noise and wear while maintaining operational functionality. The buffer acts as a protective element that softens the interaction between rigid components.
3Ease of operation
If there is no buffer between the limiting piece and bracket, then the structure is simpler, but the cushioning effect is lost leading to poor operating hand touch
Solution Approach 1:
The buffer is incorporated to provide beforehand cushioning that improves the operating hand touch by reducing the hardness of contact between the limiting piece and bracket. This cushioning effect creates a smoother, more comfortable user experience during drawer operation while adding minimal structural complexity.
4Reliability
If the locking piece uses leverage wings to hold the bearing carrier, then the locking reliability is improved, but the device complexity increases
Solution Approach 1:
The locking piece is segmented into distinct functional elements: leverage wings for holding the bearing carrier and a hooking portion for securing it. This segmentation allows each component to perform its specific function efficiently, improving locking reliability while keeping the overall structure manageable through clear functional division.
Solution Approach 2:
The patent merges the holding function (leverage wings) and the securing function (hooking portion) into a single integrated locking piece. This combination reduces the number of separate components needed, thereby limiting the increase in device complexity while achieving improved locking reliability through the synergistic effect of both functions in one element.
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 solution extends the service life of the locking piece, reduces noise and friction, and improves the user experience by providing a cushioning effect and better lubrication, thus enhancing the overall performance of the drawer slide system.
Implementation Method 1
an elastic ring on the limiting piece for cushioning
Implementation Method 2
a locking piece with leverage wings and a hooking portion to securely hold the bearing carrier
Implementation Method 3
a fender with spacers to reduce friction between rails, enhancing durability and reducing noise
Data Source
AI summary
A drawer slide locating system includes an outer rail having a bracket at its front end, an inner rail, and a bearing carrier disposed between the inner rail and the outer rail. The bracket contains a locking piece toward the bearing carrier. Two wings extend from both sides of the locking piece to define a leverage axis. A slot is disposed on the outer rail. The locking piece having one lower end adapted with a hooking portion and another end being held against by the bearing carrier. The hooking portion raises to hold against the bottom of the bearing carrier and secure the bearing carrier in place.