Elongated Guide Slide Hinge for Heavy Door Leaf Stability
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Solution Overview
Problem
Existing door hinges are not suitable for supporting joint brackets under high mechanical loads, leading to potential tilting of the door leaf, especially in open positions.
Innovation Solution
The design of the guide slide features an elongated shape with a length-to-width ratio of at least 2:1, providing a larger bearing surface and preventing tilting by ensuring stable support, even under high mechanical loads. The guide slide is longitudinally displaceable and has a bolt receptacle offset to enhance stability, with a T-shaped or stepped groove cross-section for secure engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a round or square guide slide is used in conventional door hinges, then the hinge can move freely through the guide groove, but the bearing surface is insufficient to support joint brackets under high mechanical loads
Solution Approach 1:
The guide slide's dimensional parameters are changed from conventional round or square cross-sections to an elongated rectangular cross-section with length-to-width ratio of at least 2:1. This parameter change increases the bearing surface area by 2-3 times compared to conventional designs, enabling support of joint brackets under high mechanical loads while maintaining free movement capability through the guide groove.
2Strength
If the guide slide is made elongated with length-to-width ratio of at least 2:1, then the bearing surface increases to prevent door leaf tilting, but the guide groove length and installation depth increase
Solution Approach 1:
The guide slide is designed with optimized dimensional parameters: length-to-width ratio of 2:1 to 3:1, length between 8-16mm, and width between 3-12mm. These parameter changes provide sufficient bearing surface (at least 2 times larger than conventional slides) while limiting the guide groove length increase to acceptable levels, balancing support capacity with installation space constraints.
3Strength
If the guide slide has an elongated shape, then the bearing surface is enlarged to support the first hinge bracket, but the guide slide cannot be inserted at a 90° angle and requires precise orientation
Solution Approach 1:
The guide slide is designed with asymmetric elongated rectangular cross-section (length-to-width ratio ≥ 2:1) that cannot be inserted at 90° angles. This asymmetric shape provides two benefits: it ensures correct orientation during installation preventing incorrect assembly, and it maximizes the bearing surface area in the critical load-bearing direction while maintaining a compact width for the guide groove.
4Ease of manufacture
If conventional guide slides are used, then the installation is simpler, but the door leaf tilts under high mechanical loads especially in open position
Solution Approach 1:
The guide slide's cross-sectional dimensions are changed from conventional compact shapes to an elongated rectangular shape with length-to-width ratio of at least 2:1. This parameter change increases the bearing surface area by 2-3 times, providing sufficient support capacity to prevent door leaf tilting under high mechanical loads in open positions, while the elongated shape fits within standard guide groove dimensions.
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
The invention relates to a door hinge (3) with a first and a second fastening part (4, 5) and with at least a first and a second pivot bracket (6, 7), wherein the pivot brackets (6, 7) are rotatably connected to one another about a vertical axis of rotation (Z) and wherein the first pivot bracket (6) is rotatably mounted in the first fastening part (4) by means of a guide slide (11) arranged longitudinally displaceable in a guide groove (10). According to the invention, at least one guide slide (11) has a length (F1) extending in the longitudinal direction of the guide groove (10) and a width extending in the lateral direction of the guide groove (10), wherein the ratio of the length (F1) to the width of the guide slide (11) is at least 1.5:1.