Bending Spring Device Angular Buckling Rod Deflection
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Solution Overview
Problem
Buckling spring devices require larger installation spaces due to lateral deflection of buckling rods, which limits both spring deflection and spring effect, and inefficient use of internal space.
Innovation Solution
The buckling direction of the rods is configured between a radial inward direction and a tangential direction to the outer peripheral line, allowing for larger lateral deflection within the base area without adjacent collisions, and the buckling rods are arranged to project up to the outer radius of a hollow cylinder, maximizing inner space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the buckling rods are arranged closer to the central axis to reduce installation space, then the base area is reduced, but the maximum spring deflection is reduced or limited
Solution Approach 1:
The patent changes the buckling direction of the rods from a radial orientation to an orientation at an angle between 45° and 90° relative to the radial direction. This angular reorientation allows the rods to deflect laterally within the existing base area without protruding beyond the outer peripheral line, effectively utilizing the available space in a different directional dimension to achieve both compact footprint and adequate deflection range.
2Length of moving object
If the buckling rods are arranged at a larger distance from the outer peripheral line to increase spring deflection, then the spring effect is improved, but the installation space increases
Solution Approach 1:
By orienting the buckling direction at an angle between 45° and 90° to the radial direction, the patent enables the rods to utilize the circumferential dimension more effectively. This angular orientation allows the rods to achieve larger lateral deflection distances while remaining within the base area defined by the outer peripheral line, thus improving spring deflection without increasing the overall installation footprint.
3Force
If the buckling rods deflect laterally to provide spring effect, then the spring force is generated, but the rods protrude beyond the base area increasing installation space
Solution Approach 1:
The patent specifies that the buckling direction forms an angle between 45° and 90° with the radial direction, which reorients the lateral deflection path of the rods. This angular configuration ensures that during buckling, the rods deflect within the base area boundaries defined by the outer peripheral line, preventing protrusion and maintaining a compact installation footprint while still generating the necessary spring force.
Solution Approach 2:
The patent introduces asymmetric orientation of the buckling rods relative to the radial direction, with each rod configured at a specific angle between 45° and 90°. This asymmetric angular arrangement optimizes the deflection path to remain within the base area while maintaining effective spring force generation, breaking the symmetric radial pattern that would cause protrusion.
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 configuration enables a larger spring effect and deflection within the smallest possible installation space, reducing wear and imbalance in tool clamping systems, and allows for precise machining with reduced installation space requirements.
Implementation Method 1
a buckling rod, in the event of a compressive load acting on the buckling rod in the axial direction, initially generates sharply increasing restoring forces with a comparatively small deformation. As soon as the pressure load exceeds a threshold value, the buckling bar buckles laterally and deforms more and more, with the restoring force caused by the increasing lateral deflection or deformation of the buckling bar increasing only slightly and remaining approximately constant.
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
The invention relates to a bending spring device (13) having a first annular receiving device (3) and having a second receiving device (4) disposed spaced apart along a central axis (5) of the bending spring device (13), between which a plurality of buckling rods (2) are disposed concentrically about the central axis (5), wherein each buckling rod (2) is secured at each of the two ends of each buckling rod (2) in a respective bearing device in the receiving devices (3, 4) and wherein in the event of an axial pressure load on the bent spring device (13) the buckling rods (2) buckle resiliently sideways. According to the invention, by a configuration of the buckling rods (2) and by a configuration, which is dependent thereon, of the bearing devices in the receiving devices (3, 4) the lateral deflection of the buckling rods (2) during buckling takes place inside an installation space which is necessary for the unloaded bending spring device (13). The lateral deflection of each buckling rod (2) takes place in a bending direction which extends in an angular region between a central direction directed from a central axis of the buckling rod (2) radially inwards towards the central axis (5) of the bending spring device (13) and a tangential direction directed tangentially to a point closest to the central axis (10) of the bent rod (2) of an outer circumferential line of the receiving device (3, 4).