Roller shutter door

Abstract

The utility model relates to the technical field of roller shutter doors, in particular to a roller shutter door, which is characterized in that an arc-shaped connecting plate is fixedly mounted at the upper end of a shutter sheet, a rotating shaft is fixedly mounted in the concave side of the connecting plate, an arc-shaped groove matched with the connecting plate is formed in the lower end of the shutter sheet, and an extension plate extending downwards is arranged at the lower end of the shutter sheet positioned on one side of the arc-shaped groove; an arc-shaped hanging plate used for hooking the rotating shaft is fixedly mounted on the extension plate, and the rotating shaft is rotationally connected with the hanging plate; the rotating shaft is eccentrically arranged relative to the connecting plate, the hanging plate is eccentrically arranged relative to the inner wall of the arc-shaped groove, when the two adjacent curtain pieces are flattened, the connecting plate is attached to the inner wall of the arc-shaped groove, and when the two adjacent curtain pieces are bent, the connecting plate is separated from the inner wall of the arc-shaped groove; when the roller shutter door is in a closed state, the connecting plate and the inner wall of the arc-shaped groove rotate to be in a fit state; when the roller shutter door is rolled, the connecting plate and the inner wall of the arc-shaped groove rotate to be in a separated state.

Description

Technical Field

[0001] The utility model relates to the technical field of rolling doors, and particularly relates to a rolling door. Background Art

[0002] A rolling door is a door in which a plurality of articulated door panels are connected in series and rotate up and down around a reel above the door in a fixed slideway.

[0003] The curtain sheet structure of the existing rolling door, such as the utility model patent with the application number CN209687365U, discloses a new type of curtain sheet, which includes a sheet body bent from a thin plate. The sheet body includes a first arc surface and a second arc surface arranged oppositely. Hooks are provided at the upper ends of the first arc surface and the second arc surface, and hanging openings matched with the hooks are provided at the lower ends. The thin plate at the tip of the hook protrudes outward to form a protruding part, and a water-drop-shaped inner cavity is formed in the protruding part.

[0004] The hook of the lower sheet body is hung into the hanging opening of the upper sheet body, and the tip of the hook abuts against the hook foot to realize the connection of the upper and lower two sheet bodies. However, there is a large gap between the hook and the hanging opening of the existing curtain sheet structure, resulting in poor sealing effect of the rolling door, which needs to be improved. Content of the Utility Model

[0005] The purpose of the utility model is to provide a rolling door with better sealing performance to solve the defects put forward in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A rolling door includes a plurality of curtain sheets connected in sequence. An arc-shaped connecting plate is fixedly installed at the upper end of the curtain sheet. A rotating shaft is fixedly installed on the concave side of the connecting plate. An arc-shaped groove matching with the connecting plate is provided at the lower end of the curtain sheet. An arc-shaped hanging plate for hooking the rotating shaft is fixedly installed at the lower end of the curtain sheet on one side of the arc-shaped groove. The rotating shaft is rotatably connected with the hanging plate; the rotating shaft is eccentrically arranged relative to the connecting plate, and the hanging plate is eccentrically arranged relative to the inner wall of the arc-shaped groove. When two adjacent curtain sheets are flattened, the connecting plate is attached to the inner wall of the arc-shaped groove. When bending occurs between two adjacent curtain sheets, the connecting plate is separated from the inner wall of the arc-shaped groove.

[0008] As a preferred technical solution, one end of the connecting plate is fixedly connected with the curtain sheet, and the other end of the connecting plate is provided with a bending part extending towards the concave side thereof. The rotating shaft is fixedly installed at the end of the bending part far from the curtain sheet.

[0009] As a preferred technical solution, the open side of the hanging plate is arranged opposite to the arc-shaped groove.

[0010] As a preferred technical solution, the curtain sheet is a hollow rectangular frame body, and an O-shaped reinforcing rib is fixedly installed inside the curtain sheet.

[0011] As a preferred technical solution, a fixing plate is fixedly installed on the side of the curtain sheet facing the outside. A shielding plate is rotatably installed on the fixing plate. The axis of rotation of the shielding plate is arranged parallel to the rotating shaft. A sealing sheet for covering the joint between two adjacent curtain sheets is fixedly installed on one side of the shielding plate; a spring for making the sealing sheet fit on the curtain sheet is provided on the curtain sheet.

[0012] As a preferred technical solution, a fixing column is vertically and fixedly installed on the side of the curtain sheet facing the outside. A stop head is fixedly installed at one end of the fixing column away from the curtain sheet. A spring is connected between the stop head and the shielding plate.

[0013] As a preferred technical solution, avoiding holes for the fixing column to pass through are respectively provided on the sealing sheet and the shielding plate. One end of the fixing column away from the curtain sheet passes through the avoiding holes on the sealing sheet and the shielding plate in sequence.

[0014] As a preferred technical solution, the sealing sheet is snap-connected to the shielding plate.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] When the rolling shutter door is in the closed state, the connecting plate rotates to a state of being in contact with the inner wall of the arc-shaped groove. The large-area contact between the connecting plate and the inner wall of the arc-shaped groove improves the sealing performance when the rolling shutter door is closed; when the rolling shutter door is wound up, the connecting plate rotates to a separated state from the inner wall of the arc-shaped groove, which can avoid excessive friction between the connecting plate and the inner wall of the arc-shaped groove during the winding process of the rolling shutter door.

[0017] When the rolling shutter door is in the closed state, the spring pushes the sealing sheet to closely fit at the joint between two adjacent curtain sheets, which can further improve the sealing performance when the rolling shutter door is closed.

[0018] After the fixing column is removed from the curtain sheet, the shielding plate can be rotated upward to separate the sealing sheet from the curtain sheet, so as to draw out the aged sealing sheet from between the two convex strips for replacement. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic structural diagram of the first embodiment of the present utility model;

[0021] Figure 2 It is a schematic diagram when the rolling door of the first embodiment of the present utility model is being wound up;

[0022] Figure 3 It is a schematic structural diagram of the second embodiment of the present utility model;

[0023] Figure 4 is Figure 3 a partial enlarged view of;

[0024] Figure 5 is Figure 3 a right view schematic diagram of.

[0025] In the figure: 1 - curtain sheet; 2 - reinforcing rib; 3 - connecting plate; 4 - bending part; 5 - rotating shaft; 6 - arc groove; 7 - extension plate; 8 - hanging plate; 9 - fixing plate; 10 - shielding plate; 11 - pin shaft; 12 - fixing column; 13 - avoidance hole; 14 - stop head; 15 - spring; 16 - clamping plate; 17 - convex strip; 18 - embedding groove; 19 - sealing piece. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model. Embodiment 1

[0027] As Figure 1 and Figure 2 shown, a rolling door includes a plurality of curtain sheets 1 connected in sequence. The curtain sheet 1 is a hollow rectangular frame body, and an O-shaped reinforcing rib 2 is welded inside the curtain sheet 1 to improve the anti-deformation ability of the curtain sheet 1.

[0028] An arc-shaped connecting plate 3 is fixedly installed at the upper end of the curtain sheet 1. The connecting plate 3 is in a C shape with one side open. The bottom of the connecting plate 3 is welded to the upper end of the curtain sheet 1. A bending part 4 extending inwardly to one side is integrally formed at the upper end of the connecting plate 3. A rotating shaft 5 extending horizontally along the length direction of the curtain sheet 1 is welded to the end of the bending part 4 away from the curtain sheet 1.

[0029] The lower end of the curtain sheet 1 is provided with an arc-shaped groove 6 that matches the top of the connecting plate 3. At the lower end of the curtain sheet 1 near the opening side of the arc-shaped groove 6 close to the connecting plate 3, there is an extension plate 7 extending downward. On the side of the extension plate 7 close to the arc-shaped groove 6, there is an arc-shaped hanging plate 8 welded for hooking the rotating shaft 5. The rotating shaft 5 is rotatably connected to the hanging plate 8. When the rolling shutter door is wound up, the rotating shaft 5 rotates within the hanging plate 8 to change the angle between two adjacent curtain sheets 1. To improve the stability of the connection between the rotating shaft 5 and the hanging plate 8, the opening of the hanging plate 8 is arranged opposite to the arc-shaped groove 6. In this embodiment, the hanging plate 8 is a semi-circular shape with the opening facing upward.

[0030] The rotating shaft 5 is eccentrically arranged relative to the connecting plate 3, and the hanging plate 8 is eccentrically arranged relative to the inner wall of the arc-shaped groove 6; when the rolling shutter door is in the closed state, as Figure 1 shown, two adjacent curtain sheets 1 are flattened, and the connecting plate 3 and the inner wall of the arc-shaped groove 6 rotate to a state of being in contact with each other, which plays a role in limiting the unfolding angle of the two curtain sheets 1. At the same time, the large-area contact between the connecting plate 3 and the inner wall of the arc-shaped groove 6 improves the sealing performance of the rolling shutter door when it is closed; when the rolling shutter door is wound up, as Figure 2 shown, two adjacent curtain sheets 1 are bent toward the indoor side, and at the same time, the connecting plate 3 and the inner wall of the arc-shaped groove 6 rotate to a separated state, which can avoid excessive friction between the connecting plate 3 and the inner wall of the arc-shaped groove 6 during the winding-up process of the rolling shutter door. In addition, when the rolling shutter door is wound up, the lower end of the extension plate 7 rotates to extend into the inside of the connecting plate 3, and the gap between the lower end of the extension plate 7 and the connecting plate 3 and the gap between the connecting plate 3 and the inner wall of the arc-shaped groove 6 are not sufficient for the rotating shaft 5 to completely disengage from the hanging plate 8, thereby improving the connection stability between the two curtain sheets 1. Embodiment Two

[0031] As Figures 3 to 5 shown, the difference between this embodiment and Embodiment One is that on the outdoor side of the curtain sheet 1, there is a fixing plate 9 fixedly installed by bolts. The lower end of the fixing plate 9 bends away from the curtain sheet 1. The lower end of the fixing plate 9 is rotatably installed with a shielding plate 10. The axis of rotation of the shielding plate 10 is arranged parallel to the rotating shaft 5. The lower end of the fixing plate 9 and the upper end of the shielding plate 10 are mutually engaged. The upper end of the shielding plate 10 is rotatably connected to the lower end of the fixing plate 9 through a pin shaft 11. On the side of the shielding plate 10 close to the curtain sheet 1, there is a sealing sheet 19 fixedly installed for covering the joint of two adjacent curtain sheets 1 in the flattened state. The sealing sheet 19 can be a rubber sealing sheet. Both the shielding plate 10 and the sealing sheet 19 extend along the length direction of the curtain sheet 1. When the rolling shutter door is in the closed state, two adjacent curtain sheets 1 are flattened, and the joint of the two adjacent curtain sheets 1 is covered by the sealing sheet 19 inside the shielding plate 10, which can further improve the sealing performance of the rolling shutter door when it is closed.

[0032] A fixing column 12 is vertically fixedly installed on the side of the curtain piece 1 located outdoors, and one end of the fixing column 12 is threadedly connected to the curtain piece 1. The sealing piece 19 and the shielding plate 10 are respectively provided with avoidance holes 13 for the fixing column 12 to pass through. The end of the fixing column 12 away from the curtain piece 1 passes through the avoidance holes 13 on the sealing piece 19 and the shielding plate 10 in turn, and a stopper 14 is welded on the end of the fixing column 12 away from the curtain piece 1. A spring 15 that makes the sealing piece 19 fit on the curtain piece 1 is sleeved on the fixing column 12 located between the stopper 14 and the shielding plate 10. The spring 15 gives a thrust to the shielding plate 10 and the sealing piece 19 toward the side close to the curtain piece 1, so that the sealing piece 19 fits more closely with the two flattened curtain pieces 1, further improving the sealing performance of the sealing piece 19.

[0033] The sealing sheet 19 is clamped on the shielding plate 10. Two clamping plates 16 are welded on the side of the shielding plate 10 close to the curtain sheet 1. The two clamping plates 16 are respectively provided with convex strips 17 protruding inward at the ends away from the shielding plate 10. The top and bottom of the sealing sheet 19 are respectively provided with embedded grooves 18 matching the corresponding convex strips 17. After the fixing column 12 is removed from the curtain sheet 1, the shielding plate 10 can be rotated upward to separate the sealing sheet 19 from the curtain sheet 1, so that the aged sealing sheet 19 can be pulled out from between the two convex strips 17 for replacement.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A rolling door, comprising a plurality of shutter blades connected in sequence, characterized in that: An arc-shaped connecting plate is fixedly mounted on the upper end of the curtain piece, a rotating shaft is fixedly mounted on one concave side of the connecting plate, an arc-shaped groove matching the connecting plate is provided on the lower end of the curtain piece, an arc-shaped hanging plate for hooking the rotating shaft is fixedly mounted on the lower end of the curtain piece located on one side of the arc-shaped groove, and the rotating shaft is rotatably connected to the hanging plate; the rotating shaft is eccentrically arranged relative to the connecting plate, and the hanging plate is eccentrically arranged relative to the inner wall of the arc-shaped groove, when two adjacent curtain pieces are flattened, the connecting plate fits against the inner wall of the arc-shaped groove, and when two adjacent curtain pieces are bent, the connecting plate separates from the inner wall of the arc-shaped groove.

2. A rolling door according to claim 1, characterized in that: One end of the connecting plate is fixedly connected to the curtain piece, and the other end of the connecting plate is provided with a bending portion extending toward the concave side thereof, and the rotating shaft is fixedly mounted on an end of the bending portion away from the curtain piece.

3. The rolling door according to claim 1, characterized in that: One side of the hanging plate opening is arranged opposite to the arc-shaped groove.

4. The rolling door according to claim 1, characterized in that: The curtain piece is in the form of a hollow rectangular frame, and an O-shaped reinforcing rib is fixedly installed inside the curtain piece.

5. The rolling door according to claim 1, characterized in that: A fixing plate is fixedly installed on the side of the curtain sheet located outdoors, a shielding plate is rotatably installed on the fixing plate, the axis of rotation of the shielding plate is arranged parallel to the rotating shaft, a sealing sheet for covering the joint between two adjacent curtain sheets is fixedly installed on one side of the shielding plate; a spring is provided on the curtain sheet to make the sealing sheet fit onto the curtain sheet.

6. A rolling door as claimed in claim 5, characterized in that: A fixing column is vertically fixedly installed on one side of the curtain sheet located outdoors, a stopper is fixedly installed on one end of the fixing column away from the curtain sheet, and the spring is connected between the stopper and the shielding plate.

7. A rolling door according to claim 6, characterized in that: The sealing sheet and the shielding plate are respectively provided with avoidance holes for the fixing column to pass through, and one end of the fixing column away from the curtain sheet passes through the avoidance holes on the sealing sheet and the shielding plate in sequence.

8. The rolling door according to claim 5, characterized in that: The sealing sheet is clamped on the shielding plate.

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