Rotation device and method for manufacturing same
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Solution Overview
Problem
Existing rotation devices for car seats face challenges in securing space on the side of the seat cushion due to the placement of rotation actuators and lock devices above the rotatable part, which restricts the installation of other devices like electronic control devices and blowers.
Innovation Solution
A rotation device is designed with the rotation actuator and rotation lock device positioned under the base plate, allowing for secure space on the side of the seat cushion. This configuration includes a base plate on the floor, a rotatable plate on the seat cushion, and a rotation lock device that selectively prohibits rotation, ensuring efficient use of space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the rotation actuator and rotation lock device are provided above the rotatable part, then the rotation function is achieved, but the available space between the seat cushion and the rotatable part is reduced
Solution Approach 1:
The patent inverts the conventional arrangement by positioning the rotation actuator and rotation lock device below the base plate instead of above the rotatable part. This inversion resolves the space conflict by utilizing the previously unused space underneath the base plate, allowing electronic control devices and blowers to be installed in the newly available space above the base plate.
Solution Approach 2:
The patent transitions from a vertical arrangement (above the rotatable part) to utilizing the horizontal/directional space below the base plate. By changing the spatial dimension from upward to downward placement, the invention creates available space in the region between the seat cushion and the rotatable part while maintaining the rotation functionality.
2Reliability
If the rotation lock device is provided above the rotatable part, then the rotation locking function is achieved, but the space between the seat cushion and the rotatable part becomes even smaller
Solution Approach 1:
The rotation lock device is inverted from an above-position to a below-position relative to the base plate. This inversion simultaneously achieves the rotation locking function and creates available space above the base plate for installing electronic control devices and blowers, resolving the space constraint problem.
3Ease of operation
If the rotation actuator is positioned above the rotatable part, then the rotation actuation is achieved, but other devices such as electronic control device and blower cannot be easily installed under the seat cushion
Solution Approach 1:
By inverting the position of the rotation actuator to below the base plate, the patent creates available space above the base plate where electronic control devices and blowers can be installed. This inversion simultaneously maintains rotation actuation functionality and improves installation flexibility for additional devices.
Solution Approach 2:
The patent changes the spatial parameter of the rotation actuator from an above-position to a below-position, which fundamentally alters the available space distribution. This parameter change enables the installation of electronic control devices and blowers in the previously occupied space, thereby improving adaptability and versatility.
Data Source
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AI summary
To provide a rotation device that can secure a space on the side of the seat cushion a method for manufacturing the same. The rotation device 2 is provided between a floor 5 and a seat cushion 11 to rotatably support the seat cushion with respect to the floor. The rotation device 2 includes a base plate 56 provided on a side the floor, a rotatable plate 71 provided on a side of the seat cushion and rotatably supported by the base plate, a rotation actuator 53 that rotates the rotatable plate with respect to the base plate, and a rotation lock device 54 that selectively prohibits rotation of the rotatable plate with respect to the base plate, wherein the rotation actuator and the rotation lock device are attached to a lower surface of the base plate.