Formwork Insert Sleeve Element for Pipe Sealing and Sound Insulation
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Solution Overview
Problem
Existing formwork inserts for building structures face issues with sound transmission and concrete leakage due to imprecise cuts, leading to noise and complex solutions like using hardening foam, which are not professional or permanent.
Innovation Solution
A formwork insert with a sleeve element that provides soundproofing and sealing properties, preventing noise transmission and concrete leakage by completely encircling the pipe opening and featuring a sealing lip that bridges any gaps between the pipe and the insert, eliminating the need for hardening foam.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cut along the grooves is made narrower than the pipe to clamp the pipe in the formwork insert, then the sealing effect is improved, but sound transmission from the pipe to the formwork insert increases
Solution Approach 1:
The patent introduces a sleeve element as an intermediary component between the pipe and the formwork insert. This sleeve element provides the necessary sealing contact with the pipe while preventing sound transmission to the formwork insert, thus resolving the contradiction between achieving a reliable seal and preventing sound transmission.
Solution Approach 2:
The sleeve element is designed with different properties in different regions: it has sealing lips that are softer and more elastic for optimal sealing contact with the pipe, while the main body provides soundproofing. This local differentiation of properties allows the single component to simultaneously achieve both sealing and sound isolation functions.
2Reliability
If hardening foam is used to fill the formwork insert area where the pipe penetrates to prevent sound transmission and concrete leakage, then the sealing and soundproofing effects are improved, but the device complexity and installation time increase
Solution Approach 1:
The patent extracts the sealing and soundproofing functions from the complex multi-step process of using hardening foam and integrates them into a single pre-fabricated sleeve element. This eliminates the need for additional materials and steps, reducing device complexity while maintaining the sealing and soundproofing effects.
Solution Approach 2:
The sleeve element is pre-formed with the necessary sealing and soundproofing properties before installation. The sealing lips are already positioned to contact the pipe, and the soundproofing material is integrated into the structure, eliminating the need for on-site foam application and hardening processes.
3Object-affected harmful factors
If hardening foam is used to fill the cavity where the pipe penetrates, then sound transmission is prevented, but the productivity decreases due to the complex and time-consuming installation process
Solution Approach 1:
The solution segments the soundproofing function from the complex foam filling process and integrates it into a single modular sleeve element. This allows the soundproofing component to be installed as one piece rather than requiring multi-step foam application, significantly improving installation speed while maintaining sound transmission prevention.
4Ease of manufacture
If the formwork insert is designed with a simple structure without additional sealing components, then the ease of manufacture is improved, but liquid concrete can leak into the cavity through gaps between the pipe and opening
Solution Approach 1:
The patent merges multiple functions (sealing, soundproofing, and concrete containment) into a single integrated sleeve element. This maintains manufacturing simplicity by using one component rather than multiple separate parts, while ensuring reliable prevention of concrete leakage through the integrated sealing lips and circumferential design.
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 solution enhances efficiency by reducing noise transmission, preventing concrete leakage, and simplifying installation, as it ensures a professional and permanent seal without the complexity of foam filling.
Implementation Method 1
The cuff element is designed to be completely circumferential and has sealing properties, so that liquid concrete cannot get between the pipe and the opening
Implementation Method 2
The cuff element has soundproofing properties and prevents sound transmission from the pipe to the formwork insert and the wall
Data Source
AI summary
A formwork insert (1) for a building structure comprises a formwork housing (2) with a top wall (3) and a side wall (4) adjoining and surrounding the top wall (3), wherein the top wall (3) and side wall (4) define a cavity (5), and wherein at least one opening (6) extending through the top wall (3) along a central axis (M) is arranged in the top wall (3). The formwork insert (1) comprises a sleeve element (7) with a central opening (8) for receiving a pipe (9) passing through the opening (6), wherein the sleeve element (7) extends around the opening (6) and extends at least partially into the opening (6) along the central axis (M) of the opening (6), and wherein the sleeve element (7) has sound-insulating and sealing properties.