Seat Device Direct-Drive Mechanism for Sequential Sliding and Rotation
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Solution Overview
Problem
Conventional seat devices have complex configurations with many parts, leading to high costs and potential power transmission inefficiencies due to indirect torque usage for both rotation and sliding mechanisms.
Innovation Solution
A seat device with a simplified configuration featuring a direct drive mechanism that sequentially drives both the sliding and rotation mechanisms using a power source and transmission means, such as a sprocket and holes, to convert the seat's state without interlocking these mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a transmission mechanism with multiple parts (cam member, arm, lock pin) is used to interlock rotation and sliding mechanisms, then the seat can be rotated from long state to cross state without interfering with the wall, but the configuration becomes complicated and costs increase
Solution Approach 1:
The invention extracts and removes the complex transmission mechanism (cam member, arm, lock pin) from the system. Instead of using these multiple interlocking parts, the patent employs a simplified direct-drive approach where the motor directly drives the rotation mechanism, and the sliding mechanism operates independently, thereby eliminating unnecessary complexity while maintaining the functional requirement of avoiding wall interference during rotation
Solution Approach 2:
The invention segments the previously interlocked rotation and sliding mechanisms into independent systems. The rotation mechanism and sliding mechanism are no longer coupled through a transmission mechanism but operate as separate, independently controlled systems, both driven directly by the motor at different times, thus simplifying the overall device configuration
2Reliability
If the motor torque is indirectly transmitted to the sliding mechanism via a transmission mechanism, then the rotation and sliding can be interlocked, but the transmission efficiency of power is impaired
Solution Approach 1:
The invention removes the transmission mechanism that caused power transmission losses. By eliminating the cam member, arm, and other intermediate components, the motor's torque can be directly applied to both the rotation mechanism and sliding mechanism without energy loss through multiple transmission stages, thereby improving overall power transmission efficiency
Solution Approach 2:
The invention segments the power transmission path into two direct, independent paths: one from the motor to the rotation mechanism, and another from the motor to the sliding mechanism. This segmentation eliminates the need for indirect torque transmission through a shared transmission mechanism, reducing energy loss and improving transmission efficiency
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
This approach reduces costs, improves power transmission efficiency, and allows for reliable and easy conversion of the seat's state by eliminating the need for complex transmission mechanisms.
Implementation Method 1
transmission means for directly driving the sliding mechanism first, and then directly driving the rotation mechanism
Data Source
AI summary
A seat device that can easily and reliably achieve the conversion of the state of a seat. A rotation mechanism (40) that rotates the seat about a rotation axis, a sliding mechanism (14) that advances and retracts the seat together with the rotation mechanism (40) from a fixed side, and a drive mechanism (50) that sequentially and directly drives each of the sliding mechanism (14) and the rotation mechanism (40) are included. The drive mechanism (50) includes a power source (51) provided in the fixed side of the seat, and transmission means for directly driving the sliding mechanism (14) first, and then directly driving the rotation mechanism (40), in a process of converting the state of the seat with power of the power source (51). Here, the transmission means is formed by a sprocket (58) rotated by torque of a motor (51), and many holes (59) with which the sprocket (58) is rotatably engaged to transmit the power.