Dental Mixing Device Vibration Damping Guide Element
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Solution Overview
Problem
Existing dental mixing devices face issues with poor lateral guidance and long-term stability due to relative movements between damping elements and the housing, leading to wear and strain on the base, especially when handling large quantities of dental material, causing vibrations to be transmitted to the base and affecting the device's stability.
Innovation Solution
The use of elastomeric foam damping elements and a specially designed base that compensates for deflection through contact pressure, combined with a guide element to optimize lateral guidance and reduce vibration transmission, ensures improved stability and reduced stress on the base.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a pin with lock nut and washers is used to compress damping elements, then the damping elements can be prestressed, but lateral guidance is poor and relative movements cause wear
Solution Approach 1:
A guide element is introduced as an intermediary component between the frame and damping elements. This guide element provides lateral guidance and prevents relative movements between the frame and damping elements, while allowing the damping elements to be compressed and prestressed effectively. The guide element acts as a mediator that separates the lateral guidance function from the compression function.
2Quantity of substance
If the vibrating device moves large mass of dental material, then high filling degree is achieved, but the device bounces and strains the base
Solution Approach 1:
The guide element acts as a counterbalancing structure that provides downward stabilizing force to counteract the bouncing effect. When large mass of dental material is vibrated, the guide element's structural rigidity and connection to the housing provide a stabilizing counterforce that prevents the device from bouncing excessively and reduces strain on the base.
Solution Approach 2:
The guide element serves as an intermediary structure between the vibrating frame and the housing/base. It transmits and distributes the vibrational forces and stabilizing forces, reducing the direct impact on the base and improving overall device stability during high-load operation.
3Reliability
If multiple damper units with transverse retaining plates and screws are used, then vibration damping is improved, but construction complexity increases and stress on base increases
Solution Approach 1:
The guide element combines multiple functions into a single integrated component: it provides lateral guidance for the frame, serves as a retaining structure for the damping elements, and acts as a mounting point for the frame. This merging of functions eliminates the need for separate transverse retaining plates and multiple screws, simplifying the construction while maintaining vibration damping effectiveness.
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 significantly enhances the long-term stability of the dental device and reduces stress on the base, allowing for efficient operation even with large quantities of dental material, while minimizing vibrations and maintaining proportional force compensation.
Implementation Method 1
Each cushion unit includes a first cushioning element and a second cushioning element which can be compressed and generate an elastic restoring force when compressed
Implementation Method 2
the base is deformed by the contact pressure of the dental appliance on the respective bearing point in such a way that the deflection is at least partially compensated by the contact pressure
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a dental device, in particular a dental mixing device, comprising a housing and a frame which supports at least one motor and a mixing arm (16) and is mounted at at least two, preferably at least three, in particular four, bearing points within a housing, each of these bearing points being clamped between an upper and a lower elastic, prestressed damping element (32, 34). The lower damping element (34) is supported on a first, upwardly facing stop surface (50) of the housing (44), and the upper damping element (32) on a second, downwardly facing stop surface (50).