Linear Motion Spindle Support with Spring-Loaded Counter-Stop
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Solution Overview
Problem
Existing linear motion devices face issues with support elements falling when installed vertically due to high-speed impacts, as the rebound forces exceed the adhesive forces between the stop and counter-stop elements, leading to potential structural instability.
Innovation Solution
The support elements are designed with a counter-stop element supported by a spring, allowing only the counter-stop element's mass to influence rebound forces, and are secured via a detachable magnetic or snap fastener connection, with additional friction elements to dissipate kinetic energy, preventing the support elements from falling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the support element is secured to the stop element using adhesive forces (permanent magnets), then the support element can be held in position, but at high speeds the rebound forces exceed the adhesive forces causing the support element to fall down
Solution Approach 1:
A spring element is introduced between the support element and the stop element to provide beforehand cushioning. When the support element approaches the stop element at high speed, the spring compresses and absorbs the rebound energy, preventing the support element from falling down. This resolves the contradiction by cushioning the impact before it can overcome the adhesive forces.
2Strength
If the entire support element mass is involved in the impact with the stop element, then the structural connection must be very strong, but this increases the complexity and cost of the device
Solution Approach 1:
The support element is segmented into a main body and a separate counter-stop element connected by a spring. Only the lightweight counter-stop element participates in the impact with the stop element, while the main support element body remains stationary. This segmentation reduces the effective mass involved in impacts and eliminates the need for overly strong structural connections.
3Reliability
If friction elements are added to dissipate kinetic energy, then the support element stability improves, but the device complexity increases
Solution Approach 1:
The friction elements are merged with the support element structure, forming an integrated component rather than separate attachments. The friction elements are positioned to contact the housing and automatically engage during operation, dissipating kinetic energy without requiring additional complex mechanisms or separate components.
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 design significantly reduces or eliminates the risk of support elements falling by minimizing rebound forces and ensuring stable operation even at high speeds, while maintaining a simple and cost-effective construction.
Implementation Method 1
the counter-stop element is supported in the direction of the longitudinal axis via a first spring on a support body of the support element, so that it is resiliently movable in the direction of the longitudinal axis relative to the support body
Implementation Method 2
The counter stop element or the stop element preferably comprises a permanent magnet, the other part, stop element or counter stop element, comprising a ferromagnetic element
Implementation Method 3
The support elements each have two friction elements which rest against the housing under pretension
Data Source
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AI summary
The invention relates to a linear motion device (10) with a housing in which a threaded spindle (12) is received, wherein a slide (14) is provided which is in screw engagement with the threaded spindle (12), wherein at least one support element (40) is provided which is movably mounted on the housing in the direction of a longitudinal axis (11), wherein the threaded spindle (11) is supported on the at least one support element (40) transversely to the longitudinal axis (11), wherein each support element (40) has a drive element (41) which can be brought into a releasable drive connection with an associated counter-drive element (43) in the direction of the longitudinal axis (11), wherein said counter-drive element (43) is arranged on the slide or on an adjacent support element (40), wherein each support element (40) comprises a counter-stop element (61) which is in contact with an associated stop element (60) on the housing (20) in such a way as to is bringablethat the movement path of the aforementioned support element (40) is limited. According to the invention, the counter-stop element (61) is supported in the direction of the longitudinal axis (11) by a first spring on a support body (50) of the support element (40), so that it is resiliently movable in the direction of the longitudinal axis (11) relative to the support body (50).