Bayonet Filter Element Arc Groove Assembly
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Solution Overview
Problem
Existing filter devices for motor vehicle systems, such as air dryer devices, face challenges in assembly efficiency and achieving consistent sealing due to the need for precise torque application in screw connections, which is time-consuming and requires specialized tools.
Innovation Solution
The filter element features arc-shaped guide grooves with a slope for secure bayonet locking, allowing for easy assembly and disassembly, and a support element with a seal ensures consistent sealing force without the need for separate torque tools, using a bayonet lock mechanism between the filter element and module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a screw connection is used to attach the filter element to the filter module, then a secure connection can be achieved, but the assembly process becomes time-consuming and requires specialized torque tools
Solution Approach 1:
The invention changes the connection mechanism from a screw thread to a bayonet lock with arc-shaped guide grooves and headed bolts. This parameter change transforms the assembly method from requiring precise torque control to a simple insert-and-rotate operation, eliminating the need for specialized tools while maintaining connection security through the locking mechanism.
Solution Approach 2:
The invention extracts the time-consuming torque application step from the assembly process by replacing the screw connection with a bayonet lock. The headed bolts are simply inserted into the arc-shaped guide grooves and rotated into position, removing the need for torque tools and specialized knowledge while achieving reliable connection.
2Reliability
If a screw connection is used to attach the filter element to the filter module, then adequate sealing can be achieved, but precise torque application is required which complicates the assembly process
Solution Approach 1:
The bayonet lock mechanism with arc-shaped guide grooves and headed bolts is designed to self-align and self-secure during assembly. The headed bolts automatically follow the arc-shaped path and lock into position through rotation, eliminating the need for external torque tools or specialized assembly procedures while ensuring consistent sealing force.
3Productivity
If a bayonet lock mechanism is used to attach the filter element to the filter module, then assembly speed is improved, but the sealing consistency must be maintained
Solution Approach 1:
The arc-shaped guide grooves are pre-formed with specific geometric parameters that define the locking position and sealing force. The headed bolts are designed to automatically follow this pre-defined path during assembly, ensuring that the sealing force is consistently applied without requiring precise manual adjustment or torque control, thus maintaining sealing consistency while enabling fast assembly.
Data Source
Figure 1a~1c
Figure 2~4
Figure 5a~5b
AI summary
The invention relates to a filter device for a filter system of a motor vehicle, comprising a filter element (10) which can be secured to a filter module (12) by rotating about a central axis in a rotational direction and released from the filter module (12) by rotating about the central axis in an opposite rotational direction, comprising respective securing means (20, 24) which are provided on the filter element (10) and the filter module (12) and which interact with each other in order to form a bayonet closure. The securing means of the filter element (10) are designed as arc-shaped guide grooves (20) in the base of the filter element (10), said grooves having an insertion opening (30) at one end and a latching contour (36) at the other end for a corresponding head pin (24) as securing means of the filter module (12), and an edge region (40) of each arc-shaped guide groove (20) slopes from the insertion opening (30) to the latching contour (36). The invention further relates to a filter element (10) and to a filter module (12) for such a filter device.