A two-stage top folding door

Abstract

This utility model discloses a two-section folding door, relating to the field of folding doors. It includes a door frame with two door panels vertically arranged on the frame. The top of one door panel is rotatably connected to the door frame, and the opposite faces of the two door panels are rotatably connected. A lifting assembly is fixedly connected to the door frame for adjusting the height of the lower door panel, and the lifting assembly is movably connected to the lower door panel. The advantages are: this application splits the traditional single-panel door into upper and lower sections. When opening, it only needs to fold upwards, without occupying side space. Even in factories with equipment placed against walls or narrow passages, it can still be opened normally. Furthermore, the overall folded height is much lower than a single-panel door, avoiding obstacles such as overhead pipes and beams, and eliminating the need for additional modifications to the ceiling structure, significantly improving adaptability in complex spaces.

Description

Technical Field

[0001] This utility model relates to the field of folding door technology, specifically to a two-section folding door. Background Technology

[0002] In large-span or high-ceiling spaces such as industrial plants, warehouses, and garages, the folding and opening methods of doors directly determine space utilization, passage efficiency, and usability. Existing door structures have significant limitations in meeting the needs of such scenarios.

[0003] Most existing folding doors are single or double-leaf folding structures. When the door is opened, it needs to unfold to one or both sides. This not only occupies extra space on the side of the door, such as the area reserved for equipment against the wall in the factory or the passageway, making it impossible to use normally in narrow spaces, but also requires a fixed height at the top after the door is folded. When there are obstacles such as pipes or beams on the ceiling, the folding stroke is limited and it cannot be fully opened, which seriously affects the passage height and the convenience of use.

[0004] In some large-span venues, multi-panel spliced ​​folding doors are used. Although this can reduce the size of a single door, the panels rely on a single linkage mechanism for drive. When folding, the uneven force on each panel and poor synchronization can easily cause jamming. Utility Model Content

[0005] The purpose of this utility model is to provide a two-section folding door to solve the above problems, as detailed below.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] This utility model provides a two-section folding door, including a door frame, on which two door leaves are arranged vertically. The top of one door leaf is rotatably connected to the door frame, and the opposite faces of the two door leaves are rotatably connected. A lifting assembly is fixedly connected to the door frame for adjusting the height of the lower door leaf, and the lifting assembly is movably connected to the lower door leaf.

[0008] Preferably, the door frame consists of two vertical frames and a horizontal frame fixedly connected to the top of the two vertical frames. The bottom of the vertical frames is fixedly connected to a base, and the base has several through holes.

[0009] Preferably, there are two lifting components. Both the vertical frame and the horizontal frame are hollow, and the hollow parts of the vertical frame and the horizontal frame are connected to form a device cavity. The two lifting components are fixedly connected to the two device cavities respectively.

[0010] Preferably, the lifting assembly includes a guide rod fixedly connected to the equipment cavity, a slider slidably connected to the guide rod, a fixing pin fixedly connected to the slider, an annular groove on the surface of the fixing pin, and a strip-shaped slip ring slidably connected to the annular groove. The strip-shaped slip ring cooperates with the annular groove to prevent it from disengaging from the fixing pin. The strip-shaped slip ring is fixedly connected to the door leaf located at the lower part of the door frame.

[0011] Preferably, the lifting assembly further includes a motor fixedly connected inside the equipment cavity, a sprocket one rotatably connected to the bottom of the equipment cavity, and three sprockets two distributed in a triangle rotatably connected to the top of the equipment cavity. The three sprockets two are connected to the sprocket one via a chain. Both ends of the chain are fixedly connected to the slider, and the motor is fixedly connected to the shaft of any one of the sprockets two.

[0012] Preferably, two decelerators are fixedly connected inside the equipment cavity, and the lower end of the safety rope of the decelerator is fixedly connected to the corresponding slider.

[0013] Preferably, the two door panels together can completely cover the passage space of the door frame, and a sealing strip is fixedly connected to the bottom of the lower door frame.

[0014] Preferably, the slider has a vertically formed T-shaped groove, and the T-shaped groove is in clearance fit with the guide rod.

[0015] The beneficial effects are:

[0016] 1. This application splits the traditional single door into two sections, upper and lower. When opening, it only needs to be folded upwards and retracted, without occupying the side space of the door. Even if the equipment is placed against the wall in the factory or the passage is narrow, it can still be opened normally. At the same time, the overall storage height after the two sections are folded is much lower than that of the single door, which can avoid obstacles such as top pipes and beams. There is no need to make additional modifications to the top structure of the site, which significantly improves the adaptability in complex spaces.

[0017] 2. The two-section design distributes the weight of the door between the upper and lower sections. The lifting component only needs to drive the lower door to achieve folding and lifting. Compared with the traditional method of driving the entire door with a single-piece door, the driving load is directly halved. In addition, the triangular distribution of the sprocket structure further disperses the transmission pressure, effectively avoiding problems such as motor overload and chain wear, greatly reducing the failure rate of the drive component and extending the overall service life of the equipment.

[0018] 3. The two door panels are linked by rotation, and only a single lifting component is needed to drive the lower door panel to drive the upper door panel to fold synchronously. There is no need for a complex multi-panel linkage mechanism, which reduces the jamming problem caused by poor synchronization of multiple panels. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a front view structural diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the test cross-sectional structure of this utility model;

[0023] Figure 4 This is a three-dimensional structural diagram of the lifting component of this utility model;

[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of the slider of this utility model;

[0025] Figure 6 This is a schematic diagram of the door leaf in the open state of this utility model.

[0026] The annotations in the attached figures are explained as follows:

[0027] 1. Door frame; 101. Vertical frame; 102. Horizontal frame; 103. Equipment cavity; 2. Door leaf; 3. Sealing strip; 4. Base; 5. Lifting assembly; 6. Decelerator; 7. Slider; 8. Guide rod; 9. Fixing pin; 10. Strip ring; 11. Chain; 12. Sprocket 1; 13. Sprocket 2; 14. Motor. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] See Figures 1-6 As shown, this utility model provides a two-section folding door, including a door frame 1, with two door leaves 2 arranged vertically on the door frame 1. The top of one door leaf 2 is rotatably connected to the door frame 1, and the opposite faces of the two door leaves 2 are rotatably connected. A lifting assembly 5 is fixedly connected to the door frame 1 for adjusting the height of the lower door leaf 2, and the lifting assembly 5 is movably connected to the lower door leaf 2.

[0030] As an optional implementation, the door frame 1 consists of two vertical frames 101 and a horizontal frame 102 fixedly connected to the top of the two vertical frames 101. A base 4 is fixedly connected to the bottom of the vertical frames 101, and the base 4 has several through holes. By passing bolts through the through holes, the base 4 can be fixed to the ground, thereby improving the stability of the door frame 1.

[0031] refer to Figure 1 , 3 4 and Figure 5 There are two lifting components 5. The vertical frame 101 and the horizontal frame 102 are both hollow. The hollow parts of the vertical frame 101 and the horizontal frame 102 are connected to form the equipment cavity 103. The two lifting components 5 are fixedly connected in the two equipment cavities 103 respectively. This embedded installation can avoid the lifting components 5 from occupying the passage space of the door frame 1.

[0032] As an optional embodiment, the lifting assembly 5 includes a guide rod 8 fixedly connected within the equipment cavity 103. A slider 7 is slidably connected to the guide rod 8. A T-shaped groove is vertically formed on the slider 7, and the T-shaped groove is clearance-fitted with the guide rod 8. A fixing pin 9 is fixedly connected to the slider 7. An annular groove is formed on the surface of the fixing pin 9, and a strip-shaped slip ring 10 is slidably connected to the annular groove. The strip-shaped slip ring 10 is prevented from disengaging from the fixing pin 9 by engaging with the annular groove. The strip-shaped slip ring 10 is fixedly connected to the door leaf 2 located at the lower part of the door frame 1. The lifting assembly 5 also includes a motor 14 fixedly connected within the equipment cavity 103. A first sprocket 12 is rotatably connected to the bottom of the equipment cavity 103, and three second sprockets 13 arranged in a triangular pattern are rotatably connected to the top of the equipment cavity 103. The three second sprockets 13 are connected to the first sprocket 12 via a chain 11. Both ends of the chain 11 are fixedly connected to the slider 7. The motor 14 is fixedly connected to the shaft of any one of the second sprockets 13.

[0033] In this embodiment, the motor 14 rotates the second sprocket 13, and several second sprockets 13 cooperate with the first sprocket 12 to drive the chain 11. The chain 11 can lift the slider 7, and the guide rod 8 can guide the slider 7 to move stably. The cooperation of multiple second sprockets 13 can share the load from the chain 11, the slider 7 and the door leaf 2. Furthermore, the triangular distribution of the second sprockets 13 can tension the chain 11 and improve its stability.

[0034] Furthermore, two decelerators 6 are fixedly connected inside the equipment cavity 103. The lower end of the safety rope of the decelerator 6 is fixedly connected to the corresponding slider 7. The decelerator 6 serves as a safety device for the lifting assembly 5. On the one hand, it can share the load of the motor 14 when the door 2 is closed. On the other hand, if the chain 11 breaks accidentally, the decelerator 6 can prevent the door 2 from falling rapidly and causing damage.

[0035] Specifically, the functions of the strip groove 10 and the fixing pin are as follows:

[0036] The fixed pin 9 and the strip groove 10 work together to realize the movable connection between the slider 7 and the door leaf 2, realize the relative rotation between the door leaf 2 and the fixed pin 9, and reserve the movement space between the lifting component 5 and the door leaf 2 to avoid the lifting component 5 rigidly pulling the door leaf 2 and damaging the door leaf 2. In addition, the strip groove 10 can also improve the fault tolerance rate and reduce the requirements for dimensional accuracy.

[0037] refer to Figure 1 and Figure 6 The two door panels 2 work together to completely cover the passage space of the door frame 1, and a sealing strip 3 is fixedly connected to the bottom of the lower door frame 1.

[0038] In this example, the door leaf 2 is in contact with the surface of the door frame 1, and the bottom is sealed to the ground by the sealing strip 3.

[0039] Working principle:

[0040] The two door panels 2 can be unfolded by folding upwards. The lifting component 5 drives the bottom of the lower door panel 2 to move upwards, causing the two door panels 2 to fold from a vertical state. The lower door panel 2 is lifted higher, and the angle between the two door panels 2 is reduced, thus completing the opening of the door panels 2.

[0041] The lifting assembly 5 moves the lower door leaf 2 downwards, causing the two door leaves 2 to unfold from a folded state until they are completely flat, thus completing the closing of the door leaves 2.

[0042] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A two-stage top-hinged door characterised in that: Includes a door frame (1), on which two door leaves (2) are arranged vertically. The top of one door leaf (2) is rotatably connected to the door frame (1), and the opposite surfaces of the two door leaves (2) are rotatably connected. A lifting assembly (5) is fixedly connected to the door frame (1) for adjusting the height of the lower door leaf (2), and the lifting assembly (5) is movably connected to the lower door leaf (2).

2. A two-panel top-hinged door according to claim 1, characterized in that: The door frame (1) consists of two vertical frames (101) and a horizontal frame (102) fixedly connected to the top of the two vertical frames (101). The bottom of the vertical frames (101) is fixedly connected to a base (4), and the base (4) has several through holes.

3. A two-section folding door according to claim 2, characterized in that: There are two lifting components (5). The vertical frame (101) and the horizontal frame (102) are both hollow. The hollow parts of the vertical frame (101) and the horizontal frame (102) are connected to form a device cavity (103). The two lifting components (5) are fixedly connected in the two device cavities (103) respectively.

4. A two-section folding door according to claim 3, characterized in that: The lifting assembly (5) includes a guide rod (8) fixedly connected in the equipment cavity (103), a slider (7) slidably connected to the guide rod (8), a fixing pin (9) fixedly connected to the slider (7), an annular groove is provided on the surface of the fixing pin (9), and a strip-shaped slip ring (10) is slidably connected to the annular groove. By cooperating with the annular groove, the strip-shaped slip ring (10) cannot be separated from the fixing pin (9). The strip-shaped slip ring (10) is fixedly connected to the door leaf (2) located at the lower part of the door frame (1).

5. A two-panel overfolding door according to claim 4 wherein: The lifting assembly (5) also includes a motor (14) fixedly connected in the equipment cavity (103). A sprocket (12) is rotatably connected to the bottom of the equipment cavity (103), and three sprockets (13) arranged in a triangular pattern are rotatably connected to the top of the equipment cavity (103). The three sprockets (13) are connected to the sprocket (12) via a chain (11). Both ends of the chain (11) are fixedly connected to the slider (7). The motor (14) is fixedly connected to the axis of any one of the sprockets (13).

6. A two-panel overfolding door according to claim 5 wherein: Two descent devices (6) are fixedly connected inside the equipment cavity (103), and the lower end of the safety rope of the descent device (6) is fixedly connected to the corresponding slider (7).

7. The two-stage top-folding door according to claim 1, wherein: The two door panels (2) together can completely cover the passage space of the door frame (1), and a sealing strip (3) is fixedly connected to the bottom of the lower door frame (1).

8. A two-section folding door according to claim 4, characterized in that: The slider (7) is vertically provided with a T-shaped groove, and the T-shaped groove is in clearance fit with the guide rod (8).

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