Rotating Door Hinge Height Adjusting Device
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Solution Overview
Problem
Existing door hinge systems for rotary doors face challenges in managing vertical displacement caused by the weight of the door, leading to increased friction noise and difficulty in precise height adjustment, especially in larger doors.
Innovation Solution
A door hinge height adjusting device that includes a sliding block and support plates with adjustable thin plates, allowing for precise vertical displacement control by changing the number of thin plates stacked between the support plates and the door support block body, enabling fine adjustments of 0.1 mm to 1 mm in height.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the door size is increased, then the door can serve larger spaces, but the rotational moment on the vertical surface increases requiring larger and stronger hinge joints and fixing means, which conflicts with the requirement to minimize cross-sectional dimensions
Solution Approach 1:
The hinge system is divided into multiple components: a first support bracket fixed to the door frame, a second support bracket fixed to the door, and a rotation support frame connecting them. The gear parts are segmented and distributed between the first and second support brackets, allowing the rotational moment to be distributed across multiple engagement points rather than concentrated in a single large hinge joint.
Solution Approach 2:
The invention introduces a third dimension by adding vertical adjustment capability through the rotation support frame. The gear parts are arranged not only horizontally but also vertically, with the second support bracket capable of vertical displacement relative to the first support bracket. This multi-dimensional gear engagement distributes the rotational moment across both horizontal and vertical axes, reducing the size requirements of individual hinge components.
2Force
If a gear hinge part is used to minimize rotational moment, then the rotational moment is reduced, but vertical displacement between the first support bracket and second support bracket occurs due to door weight, causing friction noise and operational issues
Solution Approach 1:
The invention introduces dynamic adjustability to the hinge system. The second support bracket is designed to move vertically relative to the first support bracket, and the rotation support frame can be adjusted to maintain proper gear engagement. This dynamic capability allows the system to compensate for vertical displacement caused by door weight, preventing the gear teeth from binding and reducing friction noise during operation.
Solution Approach 2:
The invention changes the vertical position parameter of the second support bracket relative to the first support bracket. By allowing vertical displacement and providing adjustment mechanisms, the system can modify the engagement parameters of the gear parts to maintain optimal contact under different door weights and operational conditions, thereby reducing friction and noise.
3Strength
If the hinge joint part and fixing means are made larger and stronger to support bigger doors, then the rotational moment is better managed, but the cross-sectional dimension of the door and door frame increases, conflicting with customer requirements for minimized dimensions
Solution Approach 1:
The hinge system is divided into multiple components: a first support bracket fixed to the door frame, a second support bracket fixed to the door, and a rotation support frame connecting them. The gear parts are segmented and distributed between the first and second support brackets, allowing the rotational moment to be distributed across multiple engagement points rather than concentrated in a single large hinge joint.
Solution Approach 2:
The invention introduces a third dimension by adding vertical adjustment capability through the rotation support frame. The gear parts are arranged not only horizontally but also vertically, with the second support bracket capable of vertical displacement relative to the first support bracket. This multi-dimensional gear engagement distributes the rotational moment across both horizontal and vertical axes, reducing the size requirements of individual hinge components.
Data Source
AI summary
The present invention relates to a door hinge height adjusting device that can adjust the relative vertical position of a second support bracket with respect to a first support bracket in a door hinge that rotatably connects one side surface of a door forming a rotating door to a support frame in a door frame, the door hinge comprising: the first support bracket which is fixedly connected to the support frame side of a door frame; the second support bracket which is fixedly connected to the door side; and a hinge portion which is provided between the first support bracket and the second support bracket, for relative rotation.