Flush Toilet Tank Layout for a Lower Water Inlet
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Solution Overview
Problem
Existing flush toilet designs with a flush water tank positioned at the rear portion face challenges in achieving a low silhouette due to the need for a flush water flow path that overlaps with the water discharge trap pipe, making it difficult to position the water inlet at a lower level.
Innovation Solution
The flush toilet apparatus is designed with a flush water tank fixed to the rear portion via at least two fixing points, where the water inlet is positioned eccentric to one side, and the fixing points are disposed on both sides of the discharge port, with one point closer to the lengthwise center line, allowing the water inlet to be positioned lower and avoiding the water discharge trap pipe, while ensuring firm fixation and watertightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the flush water tank is disposed at a rear portion of the flush toilet main body with a conventional flow path arrangement, then the tank can be positioned at the rear, but the water inlet must be provided at a higher position to avoid overlapping with the water discharge trap pipe, making it difficult to achieve a low silhouette
Solution Approach 1:
The water inlet is positioned asymmetrically (eccentrically) to one side with respect to the lengthwise center line of the flush toilet main body, rather than at the center. This asymmetric positioning allows the water inlet to be located at a lower position without overlapping the water discharge trap pipe, achieving a low silhouette while maintaining functional simplicity
Solution Approach 2:
The fixing points are arranged in a specific spatial configuration where the straight line connecting them passes through the discharge port in top view, with the rear fixing point closer to the lengthwise center line than the center point of the discharge port. This spatial arrangement in multiple dimensions ensures firm fixation and watertightness while enabling the low-positioned water inlet design
2Shape
If the water inlet is positioned at a lower position to achieve low silhouette, then the silhouette height is reduced, but the positioning must precisely avoid the water discharge trap pipe while ensuring adequate fixation and watertightness
Solution Approach 1:
The water inlet is deliberately positioned asymmetrically (eccentrically) to one side with respect to the lengthwise center line, creating a clear spatial separation from the water discharge trap pipe. This asymmetric design provides a built-in safety margin that simplifies manufacturing precision requirements while achieving the low silhouette goal
Solution Approach 2:
The fixing points are pre-positioned such that the straight line connecting them passes through the discharge port in top view, with the rear fixing point closer to the lengthwise center line than the center point of the discharge port. This preliminary spatial arrangement ensures that the flush water tank is firmly fixed and watertight before operation, reducing the need for high manufacturing precision during assembly
3Stability of the object's composition
If the fixing points are arranged to firmly fix the flush water tank, then fixation stability is improved, but the arrangement must resist forces that tend to knock down the tank while maintaining low silhouette
Solution Approach 1:
The fixing points are pre-positioned in a specific configuration where the straight line connecting them passes through the discharge port in top view, with the rear fixing point closer to the lengthwise center line than the center point of the discharge port. This preliminary spatial arrangement creates optimal resistance against forces that tend to knock down the tank, ensuring firm fixation while maintaining the low silhouette design
Solution Approach 2:
The fixing arrangement utilizes three-dimensional spatial positioning, with fixing points disposed on both sides of the discharge port in the longitudinal direction. This multi-dimensional fixation strategy provides enhanced stability and force resistance while keeping the overall silhouette low
Data Source
AI summary
The present invention provides a flush toilet apparatus that includes a flush toilet main body, and a flush water tank that is fixed via at least two fixing points and causes flush water to flow into a water inlet of the flush toilet main body, in which the water inlet is provided at a position eccentric to one side with respect to a lengthwise center line of the flush toilet main body, two of fixing points are each disposed on both sides of the discharge port, and are disposed so that a straight line connecting the two fixing points passes through the discharge port in a top view, and the fixing point located on a rear side among the two fixing points is located closer to the lengthwise center line of the flush toilet main body than a center point of the discharge port.