45 Degree Bevelled Door Hinge With Spring And Damper
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Solution Overview
Problem
Existing 45° door hinges are complex to install, lack spring assistance for closing, and protrude excessively into furniture compartments when closed, without damping mechanisms to cushion the door's closure.
Innovation Solution
A 45° door hinge with a compact design featuring a first and second hinge part, connected by four connecting rods and seven hinge pins, incorporating a spring for automatic closure and a damper to cushion the door's closure, allowing for easy assembly and reduced footprint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a complex hinge structure with round profile and gear means is used to allow regulations of fixed and movable parts, then the hinge can achieve proper movement control for 45° doors, but the hinge becomes difficult to install and lacks simple closure assistance mechanisms
Solution Approach 1:
The hinge is divided into separate functional modules: a fixed part with base and shaped plate, a movable part with base and shaped plate, connecting rods, hinge pins, spring means, and damper means. This segmentation allows each component to perform its specific function independently, simplifying the overall structure while maintaining proper movement control for 45° doors.
Solution Approach 2:
The hinge incorporates dynamic elements including a spring means that automatically closes the door and a damper means that controls the closing speed. The connecting rods and hinge pins enable dynamic adjustment of the door angle, allowing the hinge to adapt to different positions while maintaining stability.
2Device complexity
If known 45° door hinges are used without spring means, then the hinge structure remains simple, but automatic closure assistance is not provided
Solution Approach 1:
The spring means is integrated into the hinge structure to automatically provide closure assistance without requiring external intervention. The spring is arranged to exert force on the movable part, enabling the door to close automatically when released, thus providing self-service closure functionality.
3Device complexity
If known 45° door hinges are used without damper means, then the hinge structure remains simple, but the impact cushioning during closure is not provided
Solution Approach 1:
The damper means is integrated into the hinge structure to provide impact cushioning before the door completes its closure. The damper absorbs the kinetic energy of the moving door, preventing excessive impact forces on the furniture item, thus providing beforehand cushioning against harmful closure impacts.
4Adaptability or versatility
If existing hinge designs are used, then the hinge can function for 45° doors, but the footprint inside the furniture item is excessive in closed condition
Solution Approach 1:
The hinge parts are designed to nest within each other when the door is in the closed position. The fixed and movable parts are arranged concentrically or in close proximity, minimizing the overall footprint inside the furniture item while maintaining full functionality for 45° door operation.
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 hinge enables automatic and cushioned closing of 45° doors, is simple and cost-effective to manufacture, and has a reduced size and footprint, addressing the limitations of existing hinges.
Implementation Method 1
there is provided at least one spring arranged between a pair of said connecting rods, exerting a force in the direction of closure of the hinge
Implementation Method 2
these known hinges are normally without a damper that acts during closure of the door to cushion the impact of the door against the body of the furniture item
Data Source
Figure 1
Figure 2~2a
Figure 3~3a
AI summary
Hinge (C) for moving in opening and closing a door (2) bevelled at 45° with respect to a furniture item wall (1), also bevelled at 45°, said hinge (C) comprising a first hinge part (C1) and a second hinge part (C2), suitable for being accommodated in corresponding seats (S) provided in the wall (1) and in the door (2), each hinge part (C1) and (C2) comprising, respectively, a first shaped plate or arm (10) and a second shaped plate or cage (20), connected one to the other by means of four connecting rods (B 1, B2, B3, B4) with planar conformation and seven axes or joint pins (P1, P2, P3, P4, P5, P6, P7), forming the actual hinge assembly, wherein said arm (10) and said cage (20) have a parallelepiped shape and are housed in corresponding separate bases (G1) and (G2), whereto they are fixed by means of respective screws (51), (50), and wherein at least one lamina spring (M) or one torsion spring (M') are provided, placed between a pair of said connecting rods (B1, B2, B3, B4), or between one of said connecting rods and said arm (10) or said cage (20), exerting a force in the closing direction of the hinge, and a damper (D) actuated by at least one of said connecting rods (B1, B2, B3, B4), to slow down the closing of the hinge.