Linear Guide Carriage with Fixed and Movable Sliders to Reduce Play
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Solution Overview
Problem
Existing linear guide systems face challenges in precisely adjusting the force required for carriage movement and defining its position relative to the rail element, leading to issues like acoustic and haptic disturbances due to tilting or pivoting movements, and insufficient reduction of play between the carriage and rail element.
Innovation Solution
The design fixes the second slider to the base body in all three defined directions, eliminating play and shifting the potential axis of rotation, while using sliders with sliding surfaces that engage only in frictional contact with the rail element, and employing materials with reduced sliding friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If both sliders are movably mounted on the base body in the vertical direction to allow self-adjustment, then the sliding surfaces can engage with the running surfaces, but play between the base body and rail element cannot be sufficiently reduced in all operating situations
Solution Approach 1:
The slide is divided into a base body and multiple sliders that are independently mounted. The first slider is movably mounted while the second slider is fixedly mounted, creating segmented functional zones that address different requirements simultaneously.
Solution Approach 2:
Different mounting characteristics are applied to different sliders: the first slider has movable mounting for self-adjustment capability, while the second slider has fixed mounting for play reduction. This local differentiation resolves the contradiction by optimizing each slider's function for its specific role.
2Ease of operation
If rolling elements are arranged between the rail element and carriage to reduce friction, then movement smoothness improves, but precise adjustment of movement force and position definition become difficult
Solution Approach 1:
The patent replaces the rolling element mechanical system with a sliding surface system. The sliders with sliding surfaces provide both low friction through proper material selection and surface geometry, and precise position definition through fixed geometric relationships with the base body.
3Object-generated harmful factors
If sliding surfaces are provided on sliders to engage with running surfaces, then direct sliding friction is reduced, but tilting or pivoting movements causing acoustic and haptic issues occur
Solution Approach 1:
The patent combines multiple sliders (first movable slider and second fixed slider) into a single integrated slide structure. This merging creates a stable system where the fixed slider prevents tilting and pivoting movements that cause acoustic and haptic disturbances, while the movable slider maintains low friction engagement.
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 approach reduces overall play and prevents tilting, ensuring smooth and precise movement with minimal acoustic and haptic disturbances, while maintaining ease of movement and stability.
Implementation Method 1
a spring element, wherein the spring element is mounted on the base body such that the spring element biases the first slider away from the second slider in the vertical direction
Implementation Method 2
the sliding surfaces of the first slider and the second slider can each be brought into frictional engagement with one of the running surfaces
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The present invention relates to a slide for a linear guide system, comprising a rail element with two mutually facing running surfaces and the slide movable relative to the rail element in and against an extension direction, wherein the slide comprises: a base body, a first pair (13) consisting of a first slider (9) and a second slider (10) with sliding surfaces facing away from each other, wherein the sliding surfaces of the first slider and the second slider can each be brought into frictional engagement with one of the running surfaces, and wherein the first slider is movably mounted on the base body relative to the extension direction in a vertical direction, and a spring element, wherein the spring element is mounted on the base body such that the spring element biases the first slider away from the second slider in the vertical direction. According to the invention, the second slider is fixed to the base body in the vertical direction.