Forklift Side Door Double Hinge 90 and 180 Degree Rotation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional side doors on forklifts require complete separation and reattachment for maintenance, making battery replacement inconvenient and prone to interference, especially when trying to open 180 degrees.
Innovation Solution
A side door with a double hinge structure allowing 90-degree and 180-degree rotation, integrated with a locking mechanism and return spring for secure operation, enabling easy access and quick replacement of components like batteries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional detachable side door structure is used, then the door can be completely separated from the vehicle body for maintenance, but it requires complete separation and reattachment for battery replacement, causing inconvenience and time loss
Solution Approach 1:
The side door employs a double hinge structure that enables dynamic opening angles of 90 degrees and 180 degrees. The door can be opened to 90 degrees for general maintenance or fully to 180 degrees for battery replacement, providing flexible operational states without requiring complete detachment and reattachment, thus reducing time loss while maintaining ease of operation.
2Ease of operation
If a rotary-type door structure is used, then the door can be opened for access, but it is difficult to open 180 degrees and interference occurs during battery removal
Solution Approach 1:
The double hinge structure provides dynamic adaptability with two distinct opening states: 90 degrees for general maintenance and 180 degrees for battery replacement. This dynamic configuration eliminates interference during battery removal while maintaining ease of operation, directly resolving the contradiction between operational ease and adaptability.
3Device complexity
If a single hinge structure is used, then the door structure is simple, but the door can only be opened 90 degrees, causing interference during battery removal
Solution Approach 1:
The door hinge system is segmented into a double hinge structure with two independent hinge blocks and shafts, enabling the door to open to both 90 degrees and 180 degrees. This segmentation increases adaptability for different maintenance scenarios without excessively complicating the overall door structure, as the additional hinge components are integrated into the existing door assembly.
4Ease of operation
If the door is opened 180 degrees for battery replacement, then access is improved, but interference occurs with the door panel in conventional structures
Solution Approach 1:
The double hinge structure dynamically positions the door panel at 180 degrees during battery replacement, moving it clear of the battery removal path and eliminating interference. This dynamic positioning provides unobstructed access to the battery while maintaining ease of operation, directly resolving the contradiction between operational ease and harmful factors.
Data Source
Figure 1
Figure 2(a)~2(b)
Figure 3
AI summary
The present invention relates to a forklift side door for a capable of being open 90 degrees and 180 degrees, as necessary, to facilitate quick and easy replacement of a battery, the side door provided at a side portion of a vehicle body of the forklift, the side door including: a door panel; a hinge securing bracket of which one side is secured to the vehicle body; a first hinge shaft provided at another side of the hinge securing bracket; a first hinge block of which one side is supported by the first hinge shaft, and which is relatively rotatably coupled to the hinge securing bracket; a second hinge block of which one side is disposed adjacent to another side of the first hinge block, and of which another side is supported by the door panel; a second hinge shaft connecting another side of the first hinge block and one side of the second hinge block such that the second hinge block is relatively rotatably coupled to the first hinge block; and a locking member capable of selectively locking the second hinge block to the first hinge block such that the second hinge block and the first hinge block are rotatable integrally.