Single-Grip Faucet Cartridge Independent Outlet Control
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Solution Overview
Problem
Existing single-grip mixing faucets with ceramic cartridges require complex operation to control two outlets independently, lack a safe shut-off mechanism, and often require maintenance due to scale deposition in mechanical change valves, increasing manufacturing costs.
Innovation Solution
A single adjustable driving arm controls two separate outlet openings independently by tilting and turning, eliminating the need for change valves and simplifying operation, with ceramic discs forming a plane sealing to manage water amount and temperature for tub and shower functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a standard cartridge with two ceramic discs is used to control cold and warm water mixing, then water temperature control is achieved, but independent control of two outlets (tub and shower) is not possible
Solution Approach 1:
The cartridge is segmented into two independent control systems within a single unit. Each outlet (tub and shower) has its own ceramic disc (first and second control discs) that can be operated independently, allowing separate control of water flow to each outlet while maintaining a unified cartridge structure.
Solution Approach 2:
The single cartridge performs multiple functions: it controls water mixing for temperature regulation, independently controls flow to two different outlets (tub and shower), and provides a unified operating mechanism. This multi-functionality eliminates the need for separate control mechanisms for each outlet.
2Adaptability or versatility
If the driving arm is tilted in both directions from vertical to control two outlets, then outlet control is achieved, but safe shut-off mechanism is lost
Solution Approach 1:
The driving arm operation is inverted from the conventional approach. Instead of tilting in both directions from vertical, the arm is tilted in one direction only. The vertical position represents the open state for both outlets, while tilting in one direction controls the first outlet and tilting in the opposite direction controls the second outlet, ensuring that full vertical position always provides safe shut-off.
Solution Approach 2:
The driving arm acts as an intermediary that translates single-direction tilting motion into independent control of two outlets. By positioning the arm at specific angles relative to vertical, it selectively opens or closes each outlet while maintaining the ability to fully close both outlets by returning to the vertical position.
3Adaptability or versatility
If mechanical change valves are added for shower head switching, then shower mode switching is enabled, but maintenance frequency increases due to scale deposition
Solution Approach 1:
The shower mode switching function is merged with the water mixing and outlet control functions within the same cartridge. The ceramic discs and driving arm mechanism that control water flow also control shower head switching, eliminating the need for separate mechanical change valves and reducing maintenance requirements.
Solution Approach 2:
The cartridge with ceramic discs provides a more durable and maintenance-free solution compared to mechanical change valves. Ceramic materials are resistant to scale deposition and wear, making the cartridge a long-lasting component that eliminates frequent maintenance of switching mechanisms.
4Ease of operation
If the driving arm is lowered to open an outlet, then outlet opening is achieved, but the position corresponds to closed position in conventional faucets causing confusion
Solution Approach 1:
The driving arm operation is inverted from conventional faucets. Instead of lowering the arm to open an outlet (which corresponds to closed position in conventional designs), the arm is raised or tilted from a vertical closed position to open the outlet. This inversion makes the operation more intuitive, as raising the arm naturally associates with opening/activating the outlet.
Data Source
Figure 1
Figure 2~3
Figure 4a~4b
AI summary
The invention relates to an insertion piece to a single-grip mixing faucet developed as a control unit with a ceramic insertion, and on its one side it is connected to a footing, on its other side to a driving arm, the control unit itself, the cartridge, comprises a fixed stationary inlet disc and a moving control disc arranged one above the other to form together a plane sealing. The other side of the inlet disc is coupled to a footing, whereas the control disc on its side opposite to the inlet disc is in a forced connection with a ceramic moving element, which, in turn, is in connection with the driving arm. On the footing, a warm water inlet, a cold water inlet and an outlet are situated. The essence of the invention consists in the arrangement that on the footing (2) at least one inlet opening (11) for warm water, at least one inlet opening (10) for cold water, and an outlet hole forming at least two outlet openings (12,13) are developed, and that the driving arm is developed so that it is capable of control independently at least two separate outlets, preferably an outlet for tub filling, and another for the shower, to be switched at least the two outlets.