Road Barrier Post Assembly for Non-Rotating Secure Fastening
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing safety road barrier post systems face challenges in easily disassembling and reassembling, particularly when posts have non-circular cross-sections, as traditional threading or bayonet joint methods are not applicable, leading to potential damage during installation and limited versatility in post shapes.
Innovation Solution
A post unit design featuring an elongated fastening member with a protrusion that engages with the base part's side wall, allowing for easy assembly and disassembly without requiring the post to be turned, compatible with various post shapes and base part configurations, including non-circular cross-sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If threads or bayonet joints are used for fastening the post to the base part, then the fastening arrangement can be securely attached, but the mounting device is at risk of being damaged during insertion into the ground and cannot be used with non-circular posts
Solution Approach 1:
The fastening member is divided into a first part (threaded portion for engagement with the post) and a second part (smooth portion for insertion into the base part). This segmentation allows the threaded section to be protected within the base part cavity during installation, preventing damage while maintaining secure fastening capability.
Solution Approach 2:
The first part of the fastening member with threads is nested inside the base part after insertion. The threaded portion is received within the base part's internal cavity, protecting it from external damage during and after installation, while the second part extends outward for engagement with the post.
2Reliability
If traditional threading or bayonet joint methods are used, then secure fastening is achieved, but the post must be turned during insertion which is not possible with non-circular cross-sections
Solution Approach 1:
The fastening member is segmented into a threaded first part for secure engagement and a smooth second part for linear insertion. This allows posts with non-circular cross-sections to be inserted without rotation, while the threaded portion still provides secure fastening once the post is in position.
Solution Approach 2:
Instead of requiring the post to be turned during insertion (traditional method), the invention inverts the approach by using a smooth insertion portion that allows linear insertion first, followed by engagement of the threaded portion. This reverses the sequence of operations to accommodate non-circular post shapes.
3Strength
If the base part is made robust to withstand hammer striking during installation, then the base part can be inserted into the ground, but the fastening arrangement components may be damaged
Solution Approach 1:
The fragile threaded portion of the fastening member is nested inside the base part's internal cavity during installation. This protects the threads from damage during hammer striking, while the base part maintains its robustness for withstanding installation forces.
Solution Approach 2:
The fastening member is segmented into a protected threaded first part and an exposed smooth second part. The segmentation allows the base part to be robust for hammer striking while the threaded section is shielded inside the base part from mechanical damage.
Data Source
Figure 1a~1d
Figure 1e~2b
Figure 3a~3c
AI summary
The present disclosure relates to a post unit (1) for safety road barriers. The post unit comprises a post (2), a base part (3) having a hollow body (4) defining a space (5) for receiving the post (2), and a fastening member (10) for fastening the post (2) to the base part (3) when the post is inserted into the base part. The fastening member (10) is elongated and has an upper portion (12) comprising a fastening arrangement (13) for fastening the fastening member (10) to the post (2), and a lower portion (14) adapted to be inserted into the space (5) of the base part. The lower portion (14) comprises a protrusion (16) having a first end adapted to be engaged with a first side wall (3a) of the base part when the lower portion (14) is inserted in the base part (3). The upper portion (12) of the fastening arrangement (13) and the post (2) comprises a respective through-hole, and the fastening arrangement (13) comprises fastening means (28) to be arranged in the through-holes (26, 30) for attaching the upper portion (12) of the fastening member (10) to the post (2).