Easy-Entry Seat Rail Memory Module With Pressure-Tongue Locking
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Solution Overview
Problem
Existing seat mounting structures with easy-entry modules have complex mechanisms and occupy significant space, leading to high installation costs, reduced rigidity of sliding rails, and interference with rail locking mechanisms, due to external memory modules that require additional fastening structures and numerous parts.
Innovation Solution
A memory module comprising an upper module with a fixed block, pressure tongue, and reset spring, and a lower module with a guide rail, slider, rotating block, and torsion spring, which cooperate to provide driving forces for rotation and locking, allowing coordinated movement of the seat without complex ratchets or external components, reducing space usage and installation complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an external memory module is used, then the seat can move forward and backward, but it occupies significant space and requires additional fastening structures
Solution Approach 1:
The memory module is integrated within the sliding rails themselves, merging the memory function with the existing rail structure. The upper and lower sliding rails are paired together to form the memory mechanism, eliminating the need for separate external memory modules and their associated fastening structures.
Solution Approach 2:
The sliding rails serve dual functions: they provide the sliding mechanism for seat movement and simultaneously function as the memory module structure. The paired upper and lower rails create both the structural support and the memory mechanism in a single integrated component.
2Reliability
If complex memory modules with ratchets are used, then the seat can be locked at selected positions, but they take up large space inside the sliding rails and interfere with the rail locking mechanism
Solution Approach 1:
The complex ratchet mechanisms are completely removed from the design. Instead, the patent uses simple locking holes in the lower sliding rail that engage with corresponding protrusions on the upper sliding rail, achieving reliable positioning without complex internal mechanisms.
Solution Approach 2:
Instead of using complex internal ratcheting mechanisms within the rails, the invention inverts the approach by using simple geometric engagement features (locking holes and protrusions) that require no complex movement or transformation mechanisms.
3Adaptability or versatility
If more slots are added to the sliding rails for memory modules, then the seat can be positioned at multiple points, but the overall rigidity of the sliding rails is reduced
Solution Approach 1:
The locking holes are pre-formed as integral features of the lower sliding rail structure during manufacturing. This preliminary incorporation of positioning features eliminates the need for additional slots or openings that would compromise rail rigidity, while still providing multiple positioning options.
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 simplifies the structure, reduces costs, enhances the rigidity of sliding rails, and facilitates easier installation by eliminating the need for external memory modules, while ensuring smooth operation of the easy-entry module.
Implementation Method 1
a reset spring, wherein the reset spring provides a first driving force for the rotation of the pressure tongue
Implementation Method 2
a torsion spring, wherein the torsion spring provides a second driving force for the rotation of the rotating block
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Provided is a memory module, wherein a pressure tongue (12) is rotatably mounted on a fixed block (11) through a reset spring (13), the reset spring (13) provides a first driving force for rotation of the pressure tongue (12); a rotating block (23) is rotatably mounted on a slider (22) through a torsion spring (24), the torsion spring (24) provides a second driving force for rotation of the rotating block (23), and the slider (22) is slidably mounted on a guide rail (21); when the rotating block (23) projects forwards under the action of the second driving force, a locking block (231) is inserted into a locking hole (211a), and an upper retaining surface (1b) is separated from a first lower retaining point (2a); when the pressure tongue (12) presses the rotating block (23) downwards under the action of the first driving force to overcome the second driving force to force the rotating block (23) to raise backwards, the locking block (23) is separated from the locking hole (211a), and the upper retaining surface (1b) is contact with the first lower retaining point (2a). The memory module and the seat mounting structure realize the locking and unlocking of the slider (22) on the guide rail (21) through the cooperation of the rotatable pressure tongue (12) and the rotating block (23), and the occupy space in sliding rails is small, enhancing the scope of use of the module.