Stroller Strap Adjuster Housing with Nested Locking Mechanism
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Solution Overview
Problem
Existing stroller backrest tilt adjusting devices have complex structures, exposed strap sections that shorten their service life, and safety risks due to exposed winding designs, resulting in a less-than-ideal combination of compactness, simplicity, and longevity.
Innovation Solution
A strap adjuster with a housing that guides and locks the strap, featuring a strap-guiding member and a locking mechanism within the housing to change the strap's direction and restrict movement, ensuring the strap is covered and securely locked, thereby achieving a compact structure and extended service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a strap direction guiding unit is used to guide supporting straps in a stroller backrest tilt adjusting device, then the backrest tilt adjustment function is achieved, but the structure becomes complex and the supporting straps become exposed which shortens their service life
Solution Approach 1:
The patent combines the strap direction guiding function and the locking function into a single integrated assembly. The housing serves both to guide the strap through its interior space and to contain the locking mechanism that secures the strap at adjustable positions. This merging of functions eliminates the need for separate guiding units and reduces overall structural complexity while maintaining the backrest tilt adjustment capability.
Solution Approach 2:
The strap-guiding member is disposed inside the housing, creating a nested structure where the guiding function is contained within the protective enclosure. The locking member is also nested within the housing, with the locking area formed between the locking member and the housing interior. This nesting arrangement protects the strap from exposure while enabling both guiding and locking functions within a compact integrated structure.
2Adaptability or versatility
If the strap direction guiding unit is exposed to guide the supporting straps, then the tilt adjustment is achieved, but the exposed strap sections and winding design create safety risks and reduce service life
Solution Approach 1:
The strap-guiding member is disposed inside the housing, creating a nested structure where the guiding function is contained within the protective enclosure. The locking member is also nested within the housing, with the locking area formed between the locking member and the housing interior. This nesting arrangement protects the strap from exposure while enabling both guiding and locking functions within a compact integrated structure.
Solution Approach 2:
The housing acts as a protective shell that encloses the strap throughout its path. The strap enters the housing through an entry opening, is guided through the interior space, passes through the locking area, and exits through an exit opening. This continuous enclosure protects the strap from external interference and prevents exposure of winding sections, thereby enhancing safety and service life while maintaining tilt adjustment functionality.
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
A strap adjuster (2) is adapted for use with a strap (1), and includes a housing (3) permitting passage of the strap (1) therethrough, a strap-guiding member (5) disposed in the housing (3), and a locking member (4) disposed in the housing (3) and cooperating with the housing (3) to define a locking area (7) therebetween. The housing (3) permits the strap (1) to enter therein in an entry direction. The strap-guiding member (5) guides the strap (1) to change from extending in the entry direction to extending in an exit direction. The locking area (7) permits the strap (1) extending in the exit direction to pass therethrough. The locking member (4) is operable for restricting movement of the strap (1), and the housing (3) further permits the strap (1) passing through the locking area (7) to exit therefrom.