A folding door suitable for narrow spaces

Abstract

The utility model discloses a folding door suitable for narrow space belongs to building door and window technical field, including door frame, four door leaves, a continuous track, two groups of mechanical locking mechanism and wall storage cavity with hidden apron, have set up movable positioning pin on left and right two outer door leaves respectively, can be inserted into the positioning buckle on door frame or ground correspondingly, when the positioning pin is locked, the middle two doors can be used as the conventional pair of doors, when the positioning pin is unlocked, all door leaves are released, and the door leaves on left and right sides can be folded inwards respectively and completely push into the corresponding wall storage cavity and hide, realize the complete opening of the door area, through simple mechanical structure has realized "central pair of doors " and "complete hiding " two modes'shifting flexibly, effectively solved the problem that the door leaf occupies the passage in the narrow space, single function and the existing folding door can not hide completely, has high space utilization, easy operation, stable and reliable structure.

Description

Technical Field

[0001] This utility model relates to the field of building door and window technology, and in particular to a folding door suitable for narrow spaces. Background Technology

[0002] In confined spaces such as apartments, hotels, and small offices, the way doors open is crucial for space utilization and traffic flow design. Traditional hinged doors take up a lot of space, while ordinary folding doors still protrude from the wall when opened, affecting passage and aesthetics, and may also hinder the use of other functions on the wall.

[0003] In the existing technology, there are also some sliding doors that can hide the door leaf in the wall, but they are usually only suitable for single doors. For four-door designs that require a wider doorway, there is a lack of effective solutions. For example, the hinge structure and folding door disclosed in patent number CN202323343467.X, although it achieves the folding function through the hinge structure, still occupy space after folding in actual use: the door leaf still protrudes from the wall after folding and cannot be completely hidden. For extremely narrow spaces, the space saved is still insufficient.

[0004] A key technical challenge is to ensure that multiple doors can fold and hide together in an orderly manner after being opened, while maintaining structural stability and ease of operation. Utility Model Content

[0005] The purpose of this utility model is to provide a folding door suitable for narrow spaces in order to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution: This utility model proposes a folding door suitable for narrow spaces, comprising a door frame, four door panels, an upper track system, a lower track system, a linkage folding system, and wall storage cavities on both sides; the four door panels are, from left to right, left first door panel, left second door panel, right first door panel, and right second door panel; the upper track system includes an external track and an internal track; the external track is fixed to the crossbeam of the door frame, and the internal track consists of tracks extending horizontally on the left and right sides of the external track and embedded in the interior of the wall; The lower track system is located at the bottom of the door leaf; The left and right door panels serve as outer door panels, with their tops and bottoms slidably connected to the upper and lower track systems via pulley systems, respectively; and a movable positioning pin and a positioning buckle are provided below the door panels, with the positioning buckle supporting the positioning pin. The linkage folding system includes a first composite hinge, a second composite hinge, a first synchronous link, and a second synchronous link. The width of the left wall storage cavity is sufficient to accommodate the door panel assembly formed by folding the first and second left door panels, and the width of the right wall storage cavity is sufficient to accommodate the door panel assembly formed by folding the first and second right door panels.

[0007] As a preferred technical solution of this utility model, the movable positioning pin slides up and down through a pin seat installed on the door leaf, and descends to the locking position by its own weight or manual downward pressure.

[0008] As a preferred technical solution of this utility model, the upper part of the positioning buckle is provided with a guide cone hole or a slope to guide the positioning pin to be accurately inserted.

[0009] As a preferred embodiment of this utility model, decorative baffles or soft sealing strips are provided at the openings of the left wall storage cavity and the right wall storage cavity.

[0010] As a preferred technical solution of this utility model, a hidden cover is provided at the opening of the storage cavity, and the hidden cover can be closed when the folded door is pushed into the storage cavity.

[0011] The beneficial effects of this utility model are as follows: 1. By folding the four doors into groups and completely hiding them in the storage cavities of the side walls, the portal area is "zero occupied" when open, which greatly improves the utilization rate of the narrow space; 2. The system adopts a combination of synchronous linkage and composite hinge to ensure that a single operation by the user can drive multiple door panels to complete the folding and unfolding actions synchronously and smoothly, effectively preventing jamming; 3. The hidden cover at the opening of the storage cavity can automatically close after the door is hidden, restoring the wall to a complete appearance and fundamentally solving the problem of dust accumulation and foreign object intrusion inside the cavity. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the opening structure of a folding door; Figure 2 This is a structural diagram of a folding door pushing into a wall; Figure 3 This is a magnified view of a section of the door.

[0013] Reference numerals: 1. Door frame; 2. Four door panels; 3. Lower track system; 4. Linked folding system; 5. Wall storage cavity; 6. Concealed cover plate; 21. Left door panel; 22. Left second door panel; 23. Right door panel; 24. Right second door panel; 25. Pulley block; 26. Movable positioning pin; 27. Positioning buckle; 41. First composite hinge; 42. Second composite hinge; 43. First synchronous link; 44. Second synchronous link. Detailed Implementation Example 1

[0014] As a preferred embodiment of this utility model, a set of four folding doors with a total width of 1600mm is provided, with the left and right doors each 400mm wide, and the second door from the left and the second door from the right each 400mm wide. The door panels are made of 30mm thick honeycomb aluminum panels, and are suspended from the top by a pulley system on a continuous aluminum alloy upper track that runs through the doorway and the storage cavities in the side walls. The core of the locking mechanism is a 12mm diameter stainless steel movable positioning pin installed at the bottom of the free edge of each of the left and right door panels. This positioning pin can slide up and down within its seat and falls under its own weight. Brass positioning buckles with guide cone holes are pre-embedded at the corresponding ground positions on the left and right door frames. The wall storage cavities are 450mm wide and 120mm deep, and their openings are fitted with concealed cover plates connected by built-in torsion spring hinges. The outer finish of the cover plates is completely consistent with the surrounding walls.

[0015] like Figures 1 to 3 As shown, this utility model proposes a folding door suitable for narrow spaces, including a door frame, four door panels, an upper track system, a lower track system, a linkage folding system, and wall storage cavities on both sides; the four door panels are, from left to right, left 1 door panel, left 2 door panel, right 1 door panel, and right 2 door panel; the upper track system includes an external track and an internal track; the external track is fixed to the crossbeam of the door frame, and the internal track consists of tracks extending horizontally on the left and right sides of the external track and embedded in the wall body; The lower track system is located at the bottom of the door leaf; The left and right door panels serve as outer door panels, with their tops and bottoms slidably connected to the upper and lower track systems via pulley systems, respectively; and a movable positioning pin and a positioning buckle are provided below the door panels, with the positioning buckle supporting the positioning pin. The linkage folding system includes a first composite hinge, a second composite hinge, a first synchronous link, and a second synchronous link. The width of the wall storage cavity on the left is sufficient to accommodate the door panel assembly formed by folding the first and second left door panels, and the width of the wall storage cavity on the right is sufficient to accommodate the door panel assembly formed by folding the first and second right door panels.

[0016] The movable positioning pin slides up and down through a pin seat installed on the door leaf, and descends to the locking position by its own weight or manual downward pressure.

[0017] The positioning buckle has a guide cone hole or bevel on its upper part to guide the positioning pin to be inserted accurately.

[0018] The opening of the wall storage cavity is provided with a decorative baffle or a soft sealing strip.

[0019] The storage cavity opening is equipped with a hidden cover, which can be closed when the folded door is pushed into the storage cavity.

[0020] Working principle: This invention achieves flexible switching between a "central double-opening mode" and a "completely hidden mode" through a simple mechanical locking mechanism. Its working principle is as follows: When used as a regular passageway, the movable positioning pins on the left and right doors are inserted downwards into the corresponding positioning buckles on the door frame or ground. At this time, the left and right outer doors are rigidly locked, while the middle left and right second doors can be opened and closed freely as an independent double-opening door. When the space needs to be fully opened, the left and right positioning pins are lifted upwards to unlock, releasing all doors. The user can then fold the two doors on the left and two doors on the right inwards to form two V-shaped door groups, and push them along the continuous upper track at the top into the storage cavities of the left and right walls, achieving complete concealment of the doors. The hidden cover at the wall opening automatically closes after the doors are fully inserted, achieving dustproof and visual invisibility.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0022] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A folding door suitable for narrow spaces, characterized in that: It includes a door frame (1), four door panels (2), a lower track system (3), a linkage folding system (4), and wall storage cavities (5) on both sides; the four door panels (2) are, from left to right, the first door panel (21), the second door panel (22), the first door panel (23), and the second door panel (24). The lower track system (3) is located at the bottom of the door leaf; The left door leaf (21) and the right door leaf (23) are the outer door leaves, and their top and bottom are slidably connected to the lower track system (3) through pulley group (25); and a movable positioning pin (26) and a positioning buckle (27) are provided below the door leaf, and the positioning buckle (27) can support the positioning pin (26). The linkage folding system (4) includes a first composite hinge (41), a second composite hinge (42), a first synchronous link (43), and a second synchronous link (44). The width of the wall storage cavity (5) on the left side is sufficient to accommodate the door panel group formed by folding the left first door panel (21) and the left second door panel (22), and the width of the wall storage cavity (5) on the right side is sufficient to accommodate the door panel group formed by folding the right first door panel (23) and the right second door panel (24).

2. A folding door suitable for narrow spaces according to claim 1, characterized in that: The movable positioning pin (26) slides up and down through a pin seat installed on the door leaf, and descends to the locking position by its own weight or manual downward pressure.

3. The folding door according to claim 1, wherein: The upper part of the positioning buckle (27) is provided with a guide cone hole or a slope to guide the positioning pin (26) to be inserted accurately.

4. The folding door according to claim 1, wherein: The opening of the wall storage cavity (5) is provided with a decorative baffle or a soft sealing strip.

5. The folding door according to claim 1, wherein: The opening of the storage cavity is provided with a hidden cover (6), which can be closed when the folded door is pushed into the storage cavity.

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