Connecting Bar Positioning in Parallel Hinge Door Mechanism
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Solution Overview
Problem
The existing door opening/closing apparatus reduces storage space due to the connecting bar interfering with the main body, as it is mounted on the main body side near the bent portion of the main arm.
Innovation Solution
The connecting bar is mounted on the door side of the main arm, with its center positioned on the second shaft side relative to the center between the first and second shafts of the main arm, allowing it to be closer to the back of the door, thus expanding storage space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the connecting bar is mounted on the main body side near the bent portion of the main arm, then the door opening/closing mechanism functions properly, but the storage space in the main body is reduced due to interference
Solution Approach 1:
The connecting bar is inverted from being mounted on the main body side to being mounted on the door side of the main arm. This positional inversion moves the connecting bar away from the bent portion area, eliminating interference with storage shelves and expanding storage space while maintaining the door opening/closing mechanism's proper function through the parallel linkage mechanism
2Ease of operation
If the connecting bar runs from top to bottom of the main body, then the door can be connected to the hinges, but the storage space is reduced and shelves may be interfered with
Solution Approach 1:
The connecting bar's position is changed from running vertically through the main body to being mounted on the door side of the main arm, utilizing the spatial dimension on the door side. This dimensional relocation allows the connecting bar to coexist with storage shelves in the main body without interference, while still maintaining proper door connection functionality through the hinge mechanism
Data Source
Figure 1A~1C
Figure 2A~2C
Figure 3A~3B
AI summary
A door opening/closing apparatus is provided which can expand storage space in a main body. A door opening/closing apparatus (1) includes at least two hinges (2a and 2b), and a connecting bar (3) that is connected to the at least two hinges (2a and 2b). Each hinge (2a and 2b) includes a main body-side member (11), a door-side member (12), a main arm (13), a first link (14), and a second link (15), and causes a door (4) to move parallel to itself between a closed position and an open position. The main arm (13) includes a bent portion (31a). The connecting bar (3) is mounted on a door (4) side of the main arm (13). A center (B) of the connecting bar (3) in a width direction thereof is placed on a second shaft (13b) side relative to a center (C) between a first shaft (13a) and the second shaft (13b) of the main arm (13) in a front view (A) of the door (4) in a state where the door (4) is in the closed position.