Plate Piston Rod Guide Cap Structure for Wobble Restriction
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Solution Overview
Problem
Existing damper devices for glove boxes in automobiles have complex structures with multiple elastic tongue pieces to restrict wobbling, which complicates the design and functionality.
Innovation Solution
A damper device with a simplified structure that uses a convex and concave portion on the piston rod and guide cap, respectively, to guide the axial movement of the piston rod, thereby restricting wobbling in the thickness and width directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If six elastic tongue pieces are provided on the peripheral edges of both end portions to restrict rod wobbling, then the rod wobbling is restricted, but the structure becomes complicated
Solution Approach 1:
The patent merges the wobbling restriction function into the guide cap structure by providing a single elastic piece with a contact portion that directly contacts the rod. This eliminates the need for six separate elastic tongue pieces while achieving the same wobbling restriction effect, thereby simplifying the overall structure.
Solution Approach 2:
The patent extracts the essential wobbling restriction function from the complex six-tongue-piece structure and implements it through a simplified single elastic piece mechanism. By taking out only the necessary contact function and implementing it through a simpler structure, the device complexity is reduced while maintaining stability.
2Stability of the object's composition
If multiple elastic tongue pieces are used to restrict wobbling, then the rod movement is controlled, but the assembly process becomes more complex
Solution Approach 1:
The patent combines multiple separate elastic tongue pieces into a single integrated elastic piece within the guide cap. This merging reduces the number of assembly steps and simplifies the assembly process while maintaining the rod movement control function through the contact portion of the elastic piece.
3Stability of the object's composition
If six elastic tongue pieces are provided to restrict wobbling in multiple directions, then comprehensive wobbling restriction is achieved, but the number of parts increases
Solution Approach 1:
The patent merges the functions of six separate elastic tongue pieces into a single elastic piece structure. The elastic piece includes a contact portion that provides comprehensive wobbling restriction in multiple directions, thereby reducing the number of parts from six to one while maintaining comprehensive stability control.
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 proposed solution effectively restricts wobbling of the piston rod in the thickness and width directions with a simpler structure, improving the assembly process and reducing sliding resistance.
Implementation Method 1
an elastically deformable elastic piece portion provided in a portion of the insertion wall portion facing the rod
Data Source
AI summary
Provided is a damper device which can restrict the swinging of a rod in the width direction and thickness direction thereof with a simple structure. This damper device 10 has a cylinder 20, a piston rod 30, and a guide cap 70, and the piston rod 30 has a rod 40 and a piston 60. The rod 40 is of a plate shape. The guide cap 70 has an insertion wall part 71 inserted inside an opening 23 of the cylinder 20, an insertion hole 73 into which the rod 40 is inserted, and an elastic piece 77 that is elastically deformable. A convex curved surface 80 and a concave curved surface 50 are formed between the rod 40 and the elastic piece 77, and the concave curved surface 50 provided to the rod 40 extends in the axial direction and is configured to guide the axial direction movement of the piston rod 30.