Headrest Moving Device With Locking Groove to Reduce Component Count
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Solution Overview
Problem
The existing headrest folding devices have a complex structure and high manufacturing costs due to the increased number of components, including an exposed manipulating button that complicates the manufacturing process and increases weight.
Innovation Solution
A headrest moving device with a simplified structure featuring a first member, a second member that rotates or slides, a return spring, a moving member rotatably connected to the second member, and a guide member with a locking groove, reducing the number of components and eliminating the need for an external button by using a protrusion and guide pathway for easy operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a manipulating button and fixing bracket are used to release the cam bracket, then the headrest can be folded, but the number of components increases leading to increased weight and manufacturing complexity
Solution Approach 1:
The patent removes the manipulating button and fixing bracket from the system. Instead of using a separate button to release the cam bracket, the headrest backrest itself is used to directly push and release the cam bracket, eliminating unnecessary components while maintaining the folding function.
Solution Approach 2:
The headrest backrest is given a dual function: it serves as both the support structure for the passenger's head and as the manipulating mechanism to release the cam bracket. By pushing the headrest backrest forward, the cam bracket is released and the headrest folds, eliminating the need for a separate manipulating device.
2Ease of operation
If a manipulating button is exposed towards the outside of the headrest, then the headrest can be manipulated, but the manufacturing process becomes complex and manufacturing cost increases
Solution Approach 1:
The patent eliminates the manipulating button entirely from the design. The manipulation function is achieved through the direct mechanical action of pushing the headrest backrest, which releases the cam bracket through the guide member's groove structure, simplifying the manufacturing process.
Solution Approach 2:
The headrest backrest serves itself by acting as both the structural support and the manipulating mechanism. When pushed forward, it automatically releases the cam bracket through the guide member's groove, eliminating the need for separate manipulating components.
3Ease of operation
If the pathway of the moving member is a closed curve, then the moving member can be guided smoothly, but friction and noise increase
Solution Approach 1:
The patent introduces a moving member spring that dynamically adjusts the force applied to the moving member during its movement along the guide member's groove. The spring provides varying elastic force depending on the position, reducing friction and noise while maintaining smooth guidance throughout the folding motion.
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 reduces the weight and manufacturing cost, enhances user convenience by allowing single-action positioning of the headrest, and stabilizes the upright state without additional support structures, while minimizing noise and friction through the use of a moving member spring and guide member design.
Implementation Method 1
a return spring for returning the second member with respect to the first member
Implementation Method 2
The moving member spring may apply an elastic force along the direction opposite to the direction along which the moving member is rotating with respect to the second member
Data Source
AI summary
The present invention relates to a headrest moving device, more particularly, relates to a headrest moving device comprising: a moving member rotatably connected to a second member; and a guide member connected to the first member and guided by the first member and having a locking groove formed therein for guiding the moving member so that the number of parts of the device is significantly reduced, the weight of the apparatus can be reduced, the manufacturing cost of the apparatus can be reduced, the structure of the apparatus can be simplified since the button can be omitted, and the convenience of usage is enhanced since if a user presses one time, the headrest is positioned in a first position and if presses one more time in the same way the headrest is positioned in a second position.