Button Sealing Box Cover with Lever Spring Mechanism for Easy Assembly
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Solution Overview
Problem
Existing button type sealing boxes face challenges with difficult assembly, reliability issues, and dirt accumulation at the seal ring section, which affects sealing performance and cleanliness.
Innovation Solution
The button type sealing box employs a lever spring mechanism with a central spring and two levers, featuring V-shaped tooth grooves and A-shaped spline teeth, along with a dish seal ring fixed by double-shot injection molding, ensuring easy assembly, high reliability, and easy cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hinge rod is used to connect the lever and connection post, then the lever spring mechanism can be driven, but the hinge rod is difficult to assemble and prone to deviation in poor visibility environments
Solution Approach 1:
The patent removes the hinge rod from the structure entirely, replacing it with a direct fit-between-shapes connection where the lever's fitting shape directly engages with the connection post's groove. This extraction of the problematic hinge rod component eliminates the assembly difficulties while maintaining the lever spring mechanism's driving function.
Solution Approach 2:
The patent introduces a fitting shape and groove interface as an intermediary connection mechanism between the lever and connection post. This intermediary structure provides precise alignment and easy assembly by allowing the lever to fit directly into the groove without requiring complex hinge rod assembly procedures.
2Reliability
If the seal ring and inner cover have a sectional structure with the seal ring embedded in the groove, then the sealing function is achieved, but corners or spots are hard to clean and prone to keep dirt
Solution Approach 1:
The patent merges the seal ring with the inner cover by making them an integrated one-piece structure. This eliminates the separate groove and embedded seal ring configuration, removing hard-to-clean corners and spots while maintaining the sealing function through the continuous surface design.
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 provides a button type sealing box with easy assembly, high reliability, and stable operational performance, preventing dirt accumulation and ensuring a clean, healthy sealing environment.
Implementation Method 1
both ends of the button are respectively provided with an elastic hook
Implementation Method 2
a lever spring mechanism arranged inside the outer cover for sealness
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
Disclosed is a box cover (100) for a button type sealing box, comprising an upper cover (1), a lower cover, a dish-shaped sealing ring (2), a button (3), a rotary toothed part (4), a vertical shaft (5) and a lever and spring mechanism. The rotary toothed part (4) comprises a sleeve (401) and N spline teeth (402). The bottom and the top of each spline tooth (402) respectively comprise a helical surface, the upper helical surface (404) and the lower helical surface (403) having opposite rotating directions. The vertical shaft (5) is fixed to the button (3), and the rotary toothed part (4) is rotatably installed at the lower part of the vertical shaft (5). A bottom plate (102) of the upper cover comprises a splined hole (107) with N gullets, a bottom surface of the bottom plate comprises an end-surface gear (104), the end-surface gear (104) comprises 2N end surface teeth, and gullets of the splined hole (107) with N gullets are located at gullet parts of the end surface teeth. The lower cover comprises an end-surface ratchet wheel (705) with 2N ratchets, the ratchets of the end-surface ratchet wheel (705) with 2N ratchets are adapted to the lower helical surfaces (403) of the spline teeth (402), where N is greater than or equal to 3. The box cover of this button type sealing box is convenient to assemble, and has high reliability and stable operation performance. Further disclosed is a button type sealing box comprising such a box cover.