A type of floating folding door

Abstract

This utility model discloses a suspended folding door, including a first door body, a second door body, and a doorpost. One side of the first door body is hinged to the doorpost, and the other side of the first door body is hinged to one side of the second door body. It also includes a rotary drive mechanism, a first connecting arm, and a second connecting arm. The rotary drive mechanism is installed on the inner side of the doorpost. One end of the first connecting arm is connected to the rotation axis of the rotary drive mechanism, and the other end of the first connecting arm is hinged to one end of the second connecting arm. The other end of the second connecting arm is connected to the inner side of the first door body. The rotary drive mechanism drives the first connecting arm to rotate around its rotation axis. The folding motion of the door body is achieved through the rotary drive mechanism in conjunction with the double connecting arm structure, effectively solving the problems of complex structure and sluggish operation in existing technologies, and has the advantages of compact structure and smooth operation.

Description

Technical Field

[0001] This utility model relates to the field of folding door technology, and in particular to a suspended folding door. Background Technology

[0002] In applications with large-sized doorways, such as entrances to factories, logistics parks, and stadiums, high demands are placed on the security, reliability, and protective performance of the doors. Currently, the most common types of doors on the market are telescopic doors or swing doors. Telescopic doors achieve their extension and retraction through the cross-hinged connection of multiple door sections. Although they occupy less space when open, their overall strength and rigidity are relatively low due to their multi-section hinged structure, resulting in poor impact and wind resistance. While swing doors are structurally robust and offer good protection, traditional swing doors require a large swing space when opened, making them less suitable for space-constrained locations.

[0003] To resolve the conflict between space constraints and structural strength, folding door technology emerged. Existing technologies, such as the suspended folding door disclosed in Chinese invention patent CN102943614A, employ a structure where the active door leaf and the folding door leaf are hinged, achieving the folding action through an independent rotating linkage mechanism at the top. However, this design has significant drawbacks: First, the complex rotating linkage mechanism at the top increases the number of parts and assembly difficulty, raising production costs; second, the separate placement of the drive mechanism and the rotating linkage mechanism results in an excessively long transmission chain, increasing potential failure points and making the door operation less smooth and stable, compromising long-term reliability.

[0004] Existing folding door technologies generally suffer from complex structures and insufficient operational stability, particularly lacking optimized designs for the coordination between the drive mechanism and the connecting arm. This leads to issues such as jamming and shaking during door opening and closing. Furthermore, current technologies lack systematic consideration for the geometric parameters of the connecting arm, the layout of the mounting bracket, and the bottom support of the door, making it difficult to simultaneously meet the requirements of high space utilization and stable, reliable operation. Utility Model Content

[0005] In response to the problems raised in the background art, the purpose of this utility model is to propose a suspended folding door, which solves the problem of the complex structure of existing folding doors.

[0006] To achieve this objective, the present invention adopts the following technical solution: A suspended folding door includes a first door body, a second door body, and a door post. One side of the first door body is hinged to the door post, and the other side of the first door body is hinged to one side of the second door body. It also includes a rotary drive mechanism, a first connecting arm, and a second connecting arm. The rotary drive mechanism is installed on the inner side of the door post. One end of the first connecting arm is connected to the rotation axis of the rotary drive mechanism. The other end of the first connecting arm is hinged to one end of the second connecting arm. The other end of the second connecting arm is connected to the inner side of the first door body. The rotary drive mechanism is used to drive the first connecting arm to rotate around its rotation axis. When the folding door is in the closed state, the folding door is unfolded, the door panel of the first door body and the door panel of the second door body are on the same plane, and the second connecting arm is perpendicular to the first door body; When the folding door is in the open state, the folding door is folded, the door panel of the first door body and the door panel of the second door body are parallel to each other, and the second connecting arm is located between the first door body and the second door body.

[0007] Preferably, the horizontal distance from the connection point between the second connecting arm and the first door body to the side of the first door body near the doorpost is d, and the length of the first door body is D, where d < D.

[0008] Preferably, the connection point between the second connecting arm and the first door body is located at the lower part of the first door body; The rotary drive mechanism is mounted on the lower part of the gatepost via a mounting bracket.

[0009] Preferably, the second connecting arm includes a curved segment and a straight segment, one end of the curved segment is connected to one end of the straight segment, the other end of the curved segment is hinged to the first connecting arm, and the other end of the straight segment is connected to the first door body; When the folding door is in the open state, the straight segment is located between the first door body and the second door body, and the curved segment is located outside the first door body and the second door body, and extends in a curved manner along the thickness direction of the first door body.

[0010] Preferably, the angle between the axis of the first connecting arm and the axis of the straight segment is α; When the folding door is in the closed position, α = 90°; When the folding door is in the open state, 140°≤α≤160°.

[0011] Preferably, the length of the straight line segment is L, where L = d.

[0012] Preferably, the ratio of d to D is 1:3 to 1:2.

[0013] Preferably, the mounting bracket includes a first plate and a second plate, wherein the first plate and the second plate are perpendicular to each other; The housing of the rotary drive mechanism is mounted on the first plate, the second plate is connected to the door post, and the rotation axis of the rotary drive mechanism is arranged in the vertical direction and extends downward.

[0014] Preferably, a sliding part is provided at the bottom of the other side of the second door body, the bottom of the sliding part is in contact with the ground, and the sliding part is used to support the second door body.

[0015] Compared with the prior art, one of the above technical solutions has the following beneficial effects: The door folding motion is achieved by using a rotary drive mechanism in conjunction with a double connecting arm structure, which effectively solves the problems of complex structure and sluggish operation in the existing technology, and has the advantages of compact structure and smooth operation. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the suspended folding door of this utility model; Figure 2 This is a top view of the suspended folding door of this utility model in the closed state; Figure 3 This is a top view of the suspended folding door of this utility model in the open state; Figure 4 This is a schematic diagram of the rotary drive mechanism, the first connecting arm, and the second connecting arm of this utility model in the closed state. Figure 5 This is a schematic diagram of the rotary drive mechanism, the first connecting arm, and the second connecting arm of this utility model in the open state. Figure 6 This is a structural schematic diagram of the mounting bracket of this utility model.

[0017] The components include: a first door body 1, a second door body 2, a doorpost 3, a rotary drive mechanism 4, a first connecting arm 5, a second connecting arm 6, a curved section 61, a straight section 62, a mounting bracket 7, a first plate 71, a second plate 72, and a sliding part 8. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," and "third" may explicitly or implicitly include one or more of that feature.

[0021] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The following is in conjunction with the appendix Figures 1 to 6 The technical solution of this utility model will be further illustrated through specific implementation methods.

[0023] A suspended folding door includes a first door body 1, a second door body 2, and a door post 3. One side of the first door body 1 is hinged to the door post 3, and the other side of the first door body 1 is hinged to one side of the second door body 2. It also includes a rotary drive mechanism 4, a first connecting arm 5, and a second connecting arm 6. The rotary drive mechanism 4 is installed on the inner side of the door post 3. One end of the first connecting arm 5 is connected to the rotation axis of the rotary drive mechanism 4. The other end of the first connecting arm 5 is hinged to one end of the second connecting arm 6. The other end of the second connecting arm 6 is connected to the inner side of the first door body 1. The rotary drive mechanism 4 is used to drive the first connecting arm 5 to rotate around its rotation axis. When the folding door is in the closed state, the folding door unfolds, and the door panel of the first door body 1 and the door panel of the second door body 2 are on the same plane, and the second connecting arm 6 is perpendicular to the first door body 1. When the folding door is in the open state, the folding door is folded, the door panel of the first door body 1 and the door panel of the second door body 2 are parallel to each other, and the second connecting arm 6 is located between the first door body 1 and the second door body 2.

[0024] The working principle of this utility model is as follows: The rotary drive mechanism 4 is installed on the inner side of the door post 3, and the rotation shaft of the rotary drive mechanism 4 is fixedly connected to one end of the first connecting arm 5. When the rotation shaft of the rotary drive mechanism 4 rotates, the other end of the first connecting arm 5 swings, and pushes or pulls the first door body 1 through the second connecting arm 6, thereby realizing the opening or closing of the folding door.

[0025] Specifically, such as Figure 2 As shown, the folding door is in the closed state, with the door panels of the first door body 1 and the second door body 2 on the same plane; the second connecting arm 6 is connected to the inside of the first door body 1 and is perpendicular to the first door body 1. When the folding door needs to be opened, the rotary drive mechanism 4 is activated, which drives the other end of the first connecting arm 5 to swing towards the door body via the rotary shaft, and pushes the first door body 1 to flip outward relative to the doorpost 3; during this flipping process, the other side of the first door body 1 drives one side of the second door body 2 to move outward, so that the other side of the second door body 2 moves horizontally to gradually approach the first door body 1, until the first door body 1 and the second door body 2 fold together and the door panels are parallel to each other, as shown. Figure 3 The diagram shows the folding door in its open state. During the opening process, the second connecting arm 6 rotates with the first connecting arm 5 to the space between the first door body 1 and the second door body 2, forcing the second door body 2 to rotate around the hinge point to complete the folding. Throughout the movement, the second connecting arm 6 maintains a single-point connection with the first door body 1, avoiding motion interference caused by multiple support points.

[0026] This invention effectively solves the problem of excessively long transmission chains caused by split transmission mechanisms. The door folding process eliminates the need for multiple mechanisms to work together, improving the uniformity of the operating trajectory. The integrated design of the connecting arm is simple, concentrating fault points and reducing maintenance time, making it particularly suitable for high-frequency industrial scenarios.

[0027] Furthermore, the horizontal distance from the connection point of the second connecting arm 6 and the first door body 1 to the side of the first door body 1 near the doorpost 3 is d, and the length of the first door body 1 is D, where: d < D.

[0028] The horizontal distance d refers to the horizontal distance from the connection point of the second connecting arm 6 and the first door body 1 to the hinged edge of the first door body 1 and the doorpost 3. The length D of the first door body 1 refers to the total dimension of the door body along the horizontal (door panel) direction. By setting d < D, the force application point of the second connecting arm 6 is made closer to the hinge end of the doorpost 3, thereby shortening the length of the force arm.

[0029] Specifically, when the rotary drive mechanism 4 drives the first door body 1 to rotate via the first connecting arm 5 and the second connecting arm 6, the closer the connection point of the second connecting arm 6 and the first door body 1 is to the doorpost 3, the smaller the rotational torque it generates. Since d is less than D, the driving force of the second connecting arm 6 on the first door body 1 acts closer to the axis of rotation, thereby reducing the torque required for the door body to rotate. At the same time, the connection point being closer to the doorpost 3 can reduce the swing amplitude caused by lateral displacement deviation during the folding process of the door body, avoiding interference between the door body and adjacent structures. For example, when the folding door transitions from the closed state to the open state, the second connecting arm 6 drives the first door body 1 to rotate around the doorpost 3. At this time, the position of the connection point directly affects the movement trajectory of the door body. The shortening of d reduces the trajectory offset, thereby improving the stability of the folding action.

[0030] Furthermore, the connection point between the second connecting arm 6 and the first door body 1 is located at the lower part of the first door body 1; The rotary drive mechanism 4 is mounted on the lower part of the gatepost 3 via a mounting bracket 7.

[0031] The rotary drive mechanism 4 and the connecting arm are both located at the bottom of the door body, avoiding motion interference caused by long-distance transmission between the top drive and the bottom actuator in traditional solutions. At the same time, after the mounting bracket 7 fixes the rotary drive mechanism 4 to the bottom of the door post 3, the drive shaft and the first connecting arm form a coaxial transmission relationship, eliminating the backlash error caused by multi-stage gear or chain transmission.

[0032] Furthermore, the second connecting arm 6 includes a curved segment 61 and a straight segment 62. One end of the curved segment 61 is connected to one end of the straight segment 62, the other end of the curved segment 61 is hinged to the first connecting arm 5, and the other end of the straight segment 62 is connected to the first door body 1. When the folding door is in the open state, the straight segment 62 is located between the first door body 1 and the second door body 2, and the curved segment 61 is located outside the first door body 1 and the second door body 2, and extends in a curved manner along the thickness direction of the first door body 1.

[0033] The curved segment 61 refers to a structural segment with a curved shape, which can be implemented using a circular arc or parabolic curve design. Its curvature direction is consistent with the thickness direction of the first door body, and it is used to avoid interference with the movement trajectory of the door body when it is folded. The straight segment 62 refers to a structural segment with a straight extension feature, which can be implemented using a rectangular or cylindrical rod, and it is used to embed between the first door body 1 and the second door body 2 in the open state to provide rigid support.

[0034] Specifically, during the process of switching the folding door from the closed state to the open state, the first connecting arm 5 is driven to rotate by the rotary drive mechanism 4, and the second connecting arm 6 transmits power through a combination structure of curved segment 61 and straight segment 62. The curved segment 61 bends and extends outward, so that the overall movement trajectory of the second connecting arm 6 avoids the folding path of the door body, while the straight segment 62 maintains a fixed connection with the first door body 1 and is embedded between the first door body 1 and the second door body 2 after folding.

[0035] Furthermore, the angle between the axis of the first connecting arm 5 and the axis of the straight segment 62 is α; When the folding door is in the closed position, α = 90°; When the folding door is in the open state, 140°≤α≤160°.

[0036] The angle α between the rotation axis of the first connecting arm and the extension direction of the straight segment of the second connecting arm can be achieved by adjusting the positional relationship of the hinge points of the first connecting arm 5 and the second connecting arm 6. This angle range is configured as a constraint condition to balance the transmission efficiency and motion trajectory of the folding door.

[0037] In the closed state, α=90° is configured to form an orthogonal support structure, which is achieved by limiting the mechanical position when the door is unfolded. This angle enables the second connecting arm 6 to form a vertical rigid connection with the first door 1.

[0038] In addition, the 140°≤α≤160° angle is configured to adapt to the spatial constraints during the folding process when the door is open, which can be achieved by controlling the rotation stroke of the rotary drive mechanism 4.

[0039] To further explain, when the folding door is unfolded to the closed state, the straight segments 62 of the first connecting arm 5 and the second connecting arm form a right-angle arrangement. At this time, the second connecting arm 6 acts as a rigid link, providing a support force perpendicular to the door panel surface to the first door body 1, effectively suppressing deformation within the door body plane. When the folding door is folded to the open state, the first connecting arm 5 drives the second connecting arm 6 to change angle through rotation. When α reaches 140 degrees, the first door body 1 and the second door body 2 fold towards each other until the door panels are parallel to each other. The straight segment 62 of the second connecting arm is completely embedded in the gap between the two door bodies. At this time, the lever arm length of the transmission system reaches the optimal value, ensuring effective transmission of driving force while avoiding mechanical stress concentration caused by excessive angle.

[0040] Furthermore, the length of the straight line segment 62 is L, where L = d.

[0041] During the folding (opening) action of the door, the equal constraint between the length L and d of the straight segment 62 of the second connecting arm 6 ensures that the straight segment 62 is fully embedded in the gap between the first door body 1 and the second door body 2 when the folding door is in the open state. Outside the two door bodies, there is the curved segment 61 of the second connecting arm, which is hinged to the first connecting arm 5. This matching relationship ensures that the movement trajectories of the door body and the connecting arm are coordinated during the folding process. The positioning accuracy of the straight segment 62 within the gap of the door body is guaranteed by geometric constraints, thereby eliminating the risk of movement jamming or structural collision caused by redundant or insufficient length of the connecting arm.

[0042] Furthermore, where d:D = 1:3 to 1:2.

[0043] The ratio of the horizontal distance d to the length D of the first door body 1 is limited to the range of 1:3 to 1:2, which ensures that the length of the connecting arm is not too long, reduces the space occupied by the transmission structure behind the door, and the transmission structure (connecting arm) covers at most only half of the area from the doorpost 3 to the first door body 1. In addition, by shortening the length of the connecting arm, the torque transmission path of the drive transmission is shortened, reducing the complexity of the transmission chain.

[0044] Furthermore, the mounting bracket 7 includes a first plate 71 and a second plate 72, wherein the first plate 71 and the second plate 72 are perpendicular to each other; The housing of the rotary drive mechanism 4 is mounted on the first plate 71, and the second plate 72 is connected to the door post 3. The rotation axis of the rotary drive mechanism 4 is arranged in the vertical direction and extends downward.

[0045] The first plate 71 and the second plate 72 are welded together to form a right-angle frame. The rotary drive mechanism 4 is fixed to the preset mounting position of the first plate 71 by bolts, and the second plate 72 is connected to the concrete structure of the gatepost 3 by expansion bolts. After the rotary drive mechanism 4 is powered on, its output shaft drives the first connecting arm 5 to rotate around the vertically extending rotary axis. Due to the downward extension of the rotary axis, the center of gravity of the drive mechanism is lowered to the area near the bottom of the gatepost 3, which effectively weakens the overturning moment borne by the mounting frame 7. At the same time, the right-angle structure of the first plate 71 and the second plate 72 forms a local rigid support on the side wall of the gatepost 3, preventing the vibration of the rotary drive mechanism 4 from being transmitted to the hinge part between the gate bodies.

[0046] Furthermore, a sliding part 8 is provided at the bottom of the other side of the second door body 2. The bottom of the sliding part 8 is in contact with the ground, and the sliding part 8 is used to support the second door body 2.

[0047] The sliding part 8 refers to the support structure located at the bottom of the door and in contact with the ground. It can be implemented using pulleys or sliders, and its function is to provide bottom sliding support for the door. Specifically, when the folding door is opened and closed, the second door 2 rotates around the hinge point under the drive of the rotary drive mechanism 4. At this time, the sliding part 8 contacts the ground and slides along the ground.

[0048] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A suspended folding door, comprising a first door body, a second door body, and a doorpost, wherein one side of the first door body is hinged to the doorpost, and the other side of the first door body is hinged to one side of the second door body, characterized in that: It also includes a rotary drive mechanism, a first connecting arm, and a second connecting arm; The rotary drive mechanism is installed on the inner side of the door post. One end of the first connecting arm is connected to the rotation axis of the rotary drive mechanism. The other end of the first connecting arm is hinged to one end of the second connecting arm. The other end of the second connecting arm is connected to the inner side of the first door body. The rotary drive mechanism is used to drive the first connecting arm to rotate around its rotation axis. When the folding door is in the closed state, the folding door is unfolded, the door panel of the first door body and the door panel of the second door body are on the same plane, and the second connecting arm is perpendicular to the first door body; When the folding door is in the open state, the folding door is folded, the door panel of the first door body and the door panel of the second door body are parallel to each other, and the second connecting arm is located between the first door body and the second door body.

2. A suspended folding door according to claim 1, characterized in that: The horizontal distance from the connection point between the second connecting arm and the first door body to the side of the first door body near the doorpost is d, and the length of the first door body is D, where: d < D.

3. A suspended folding door according to claim 2, characterized in that: The connection point between the second connecting arm and the first door body is located at the lower part of the first door body; The rotary drive mechanism is mounted on the lower part of the gatepost via a mounting bracket.

4. A suspended folding door according to claim 3, characterized in that: The second connecting arm includes a curved segment and a straight segment. One end of the curved segment is connected to one end of the straight segment, the other end of the curved segment is hinged to the first connecting arm, and the other end of the straight segment is connected to the first door body. When the folding door is in the open state, the straight segment is located between the first door body and the second door body, and the curved segment is located outside the first door body and the second door body, and extends in a curved manner along the thickness direction of the first door body.

5. A suspended folding door according to claim 4, characterized in that: The angle between the axis of the first connecting arm and the axis of the straight line segment is α; When the folding door is in the closed position, α = 90°; When the folding door is in the open state, 140°≤α≤160°.

6. A suspended folding door according to claim 5, characterized in that: The length of the straight line segment is L, where L = d.

7. A suspended folding door according to claim 6, characterized in that: Where d:D = 1:3~1:

2.

8. A suspended folding door according to claim 3, characterized in that: The mounting bracket includes a first plate and a second plate, wherein the first plate and the second plate are perpendicular to each other; The housing of the rotary drive mechanism is mounted on the first plate, the second plate is connected to the door post, and the rotation axis of the rotary drive mechanism is arranged in the vertical direction and extends downward.

9. A suspended folding door according to claim 1, characterized in that: The bottom of the other side of the second door is provided with a sliding part, the bottom of which contacts the ground and is used to support the second door.

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