Roller shutter door for container

Abstract

The utility model discloses a roller shutter door for a container, which is mounted on a door frame and comprises a door curtain, a first rolling rope is connected to one side of the door curtain, and a second rolling rope is connected to the other side of the door curtain; the roller shutter mechanism is connected with the door frame, the first rolling rope is connected with one end of the roller shutter mechanism, and the second rolling rope is connected with the other end of the roller shutter mechanism; the locking seat is connected to the bottom end of the door curtain; the first locking mechanism is connected to one end of the locking seat; the second locking mechanism and the first locking mechanism are connected to the other end of the locking base in a spaced mode. According to the roller shutter door, the rigid push-pull rod can be prevented from being too long, and therefore the situation that the connection between the lock block and the lock groove is affected due to flexible deformation of the push-pull rod is avoided; the connecting strength of the locking base and the door frame can be improved, and the door curtain is prevented from being separated from the door frame when stressed too much.

Description

Technical Field

[0001] The utility model relates to the technical field of aviation containers, in particular to a rolling shutter door for a container. Background Art

[0002] Airline containers, also known as air cargo containers or ULDs (Unit Load Devices), are loading devices designed specifically for air transport. They have become increasingly popular in recent years due to their advantages, including improved loading efficiency, reduced loading and unloading times, cargo protection, adaptability to aircraft cargo hold shapes, and improved transport quality.

[0003] Chinese Patent Publication No. CN218759662U discloses a quick-locking structure for rolling shutter doors of air containers. The structure further discloses that the first and second spring frames of the quick-locking structure for rolling shutter doors of air containers are connected to a common rotating frame. When a rotating arm rotates, the rotating frame rotates. This rotation of the rotating frame causes the first and second spring frames to translate. The first spring frame translates the first locking frame, while the second spring frame translates the second locking frame. The first and second locking frames engage and position themselves in the door slots. This quick-locking structure for rolling shutter doors of air containers is only suitable for containers with smaller door frames. For larger door frames, the length of the first and second spring frames needs to be increased. During the locking process, excessively long spring frames deform due to their flexibility when subjected to translational force, preventing the corresponding locking frames from engaging smoothly in the door slots. Furthermore, when subjected to excessive lateral force, the rolling shutter door body can easily separate from the door frame. Utility Model Content

[0004] In order to overcome the defects in the prior art, an embodiment of the present invention provides a rolling door for a container, which is used to solve at least one of the above problems.

[0005] The present application discloses a rolling door for a container, which is installed on a door frame and includes:

[0006] a door curtain, wherein one side of the door curtain is connected to a first coiled rope, and the other side of the door curtain is connected to a second coiled rope;

[0007] a rolling curtain mechanism connected to the door frame, the first winding rope connected to one end of the rolling curtain mechanism, and the second winding rope connected to the other end of the rolling curtain mechanism;

[0008] A locking seat connected to the bottom end of the door curtain;

[0009] A first locking mechanism connected to one end of the locking seat;

[0010] The second locking mechanism is connected to the other end of the locking base at a distance from the first locking mechanism.

[0011] Specifically, the first locking mechanism includes a rotating shaft, a handle, a push-pull rod and a locking block. The handle is rotatably connected to the locking seat through the rotating shaft. One end of the push-pull rod is connected to the rotating shaft, and the other end of the push-pull rod is connected to the locking block.

[0012] Specifically, the first locking mechanism further includes a hook connected to the rotating shaft, and the hook is used to be engaged with the door frame.

[0013] Specifically, the locking seat is made of profile, and the locking seat is provided with an accommodating cavity. The push-pull rod and the locking block are located in the accommodating cavity, at least a part of the hook is located in the accommodating cavity, and the bottom of the accommodating cavity is provided with a long hole for the hook to extend out.

[0014] Specifically, a sliding groove for guiding the translation of the locking block is further provided in the accommodating cavity.

[0015] Specifically, the rolling shutter mechanism includes a support shaft, a first rope winder, a second rope winder, a torsion spring, a first sleeve and a torsion spring fixer. The support shaft is used to connect to the door frame, the first rope winder and the second rope winder are respectively fixed to the two ends of the support shaft, the first rope is connected to the first rope winder, and the second rope is connected to the second rope winder. The first sleeve is provided with a shoulder, the first sleeve and the torsion spring fixer are respectively sleeved on the support shaft, and the torsion spring fixer is in contact with one end of the first sleeve away from the shoulder, the torsion spring is sleeved on the first sleeve, one end of the torsion spring is fixed to the torsion spring fixer, and the other end of the torsion spring passes through the shoulder to be connected to the first rope or the second rope.

[0016] Specifically, the rolling shutter mechanism further includes a second sleeve, both ends of which are respectively connected to the first rope reel and the second rope reel, and the torsion spring, the first sleeve and the torsion spring fixer are all located inside the second sleeve.

[0017] Specifically, the first coiling rope and the second coiling rope are flexible steel ropes.

[0018] Specifically, two handles are provided on the locking seat.

[0019] The present invention has at least the following beneficial effects: in this embodiment, the door curtain is locked by setting two independent and unconnected first locking mechanisms and second locking mechanisms, and the first locking mechanism and the second locking mechanism are respectively close to the side bars of the corresponding door frames. In this way, the rigid push-pull rod can be prevented from being set too long, thereby preventing the push-pull rod from affecting the connection between the lock block and the lock groove due to flexible deformation. In addition, by setting a hook to be connected to the lower sill of the door frame, the connection strength between the locking seat and the door frame can be further improved, thereby preventing the door curtain from being separated from the door frame when the force is too large, and is suitable for containers with large door frames.

[0020] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic structural diagram of a container rolling door (including a second sleeve) in an embodiment of the present utility model;

[0023] Figure 2 This is a schematic structural diagram of a container rolling door (excluding the second sleeve) in an embodiment of the present utility model;

[0024] Figure 3 This is a schematic structural diagram of the first locking mechanism in one embodiment of the utility model at one viewing angle;

[0025] Figure 4 1 is a schematic structural diagram of the first locking mechanism in another embodiment of the present utility model;

[0026] Figure 5 yes Figure 2 A partial enlarged view of point A in the middle;

[0027] Figure 6 yes Figure 2 A partial enlarged view of point B in the middle;

[0028] Figure 7 yes Figure 2 A partial enlarged view of point C in the middle.

[0029] The figure marks in the above drawings are: 1. door curtain; 11. first winding rope; 12. second winding rope; 2. curtain rolling mechanism; 21. support shaft; 22. first rope winder; 23. second rope winder; 24. torsion spring; 241. first end of torsion spring; 242. second end of torsion spring; 25. first sleeve; 251. shoulder; 26. torsion spring fixer; 27. second sleeve; 3. locking seat; 31. slide groove; 4. first locking mechanism; 41. handle; 42. push-pull rod; 43. locking block; 44. hook; 5. second locking mechanism; 6. handle. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "fixed," and "connected" should be understood in a broad sense. 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 internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0032] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but through another feature therebetween. Moreover, a first feature being "above," "below," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0033] In the description of this embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of this application.

[0034] In addition, the terms "first", "second", etc. are only used to distinguish in description and have no special meaning.

[0035] The container rolling door of this embodiment is first installed on the door frame of the container before use.

[0036] Combine Figure 1 and Figure 2 As shown, the container rolling door of this embodiment mainly includes: a door curtain 1, a rolling curtain mechanism 2, a locking base 3, a first locking mechanism 4, and a second locking mechanism 5. Specifically, a first winding rope 11 is connected to one side of the door curtain 1, and a second winding rope 12 is connected to the other side of the door curtain 1. The rolling curtain mechanism 2 is used to connect the door frame and the door curtain 1. The first winding rope 11 on the door curtain 1 is connected to one end of the rolling curtain mechanism 2, and the second winding rope 12 is connected to the other end of the rolling curtain mechanism 2. The locking base 3 is connected to the bottom end of the door curtain 1. The first locking mechanism 4 and the second locking mechanism 5 are connected to the two ends of the locking base 3 at intervals. In other words, the first locking mechanism 4 and the second locking mechanism 5 are two independent and unconnected mechanisms.

[0037] Specifically, combined Figure 3 and Figure 4As shown, the first locking mechanism 4 of this embodiment mainly includes a rotating shaft (not shown in the figure), a handle 41, a push-pull rod 42 and a locking block 43, wherein the push-pull rod 42 is preferably made of a rigid material. The handle 41 is rotatably connected to the locking base 3 via the rotating shaft, and one end of the push-pull rod 42 is connected to the rotating shaft and the other end is connected to the locking block 43. Preferably, the first locking mechanism 4 of this embodiment may also include a hook 44, which is connected to the rotating shaft and is used to connect to the slot on the lower sill of the door frame (the lower side frame of the door frame). The second locking mechanism 5 of this embodiment can adopt the same structure as the first locking mechanism 4, and will not be repeated here. The first locking mechanism 4 and the second locking mechanism 5 can be arranged on the locking base 3 in a mirror image. With the above scheme, when the handle 41 of the first locking mechanism 4 or the second locking mechanism 5 is rotated, the push-pull rod 42 can be driven to move in the horizontal direction, thereby pushing or pulling the lock block 43 toward or away from the lock groove on the door frame side stile (side frame of the door frame); the first locking mechanism 4 and the second locking mechanism 5 are respectively close to the side stiles of the door frame corresponding thereto, so that the push-pull rod 42 can be prevented from being set too long, thereby preventing the push-pull rod 42 from affecting the connection between the lock block 43 and the lock groove due to flexible deformation; in addition, by providing a hook 44 connected to the lower sill of the door frame, the connection strength between the locking seat 3 and the door frame can be further improved, thereby preventing the door curtain 1 from detaching from the door frame when subjected to excessive force, and is suitable for containers with large door frames.

[0038] Specifically, the locking seat 3 of this embodiment is made of profiles. The locking seat 3 is provided with a receiving cavity, and the two ends of the receiving cavity are penetrated to allow the locking blocks 43 of the first locking mechanism 4 and the second locking mechanism 5 to extend to connect with the corresponding side stiles. The above-mentioned push-pull rod 42 and the locking block 43 are located in the receiving cavity. At least a part of the hook 44 is also located in the receiving cavity, and the bottom of the receiving cavity is provided with a long hole, which allows the hook 44 to extend to connect with the door frame. Preferably, if Figure 3 As shown, a slide groove 31 is further provided in the accommodating cavity, and the locking block 43 is located in the slide groove 31. When the locking block 43 moves horizontally, the slide groove 31 can guide it, further ensuring that the locking block 43 is smoothly connected to the door frame side.

[0039] Combine Figure 2 as well as Figures 5 to 7As shown, the curtain rolling mechanism 2 of this embodiment primarily comprises a support shaft 21, a first cord reel 22, a second cord reel 23, a torsion spring 24, a first sleeve 25, and a torsion spring retainer 26. The support shaft 21 is used to connect to the door frame; the first cord reel 22 and the second cord reel 23 are respectively fixed to opposite ends of the support shaft 21. The first cord reel 22 is connected to the first cord 11 on the door curtain 1, and the second cord reel 23 is connected to the second cord 12 on the door curtain 1. When the door curtain 1 is rolled up, the first cord 11 is wound around the first cord reel 22, and the second cord 12 is wound around the second cord reel 23. The first sleeve 25 has a shoulder 251 and is mounted on the outer wall of the support shaft 21. The torsion spring retainer 26 is mounted on the outer wall of the support shaft 21 and abuts against the end of the first sleeve 25 facing away from the shoulder 251. The torsion spring 24 is mounted on the first sleeve 25. The first end 241 of the torsion spring is secured to the torsion spring holder 26 via a fastener. The second end 242 of the torsion spring passes through the shoulder 251 and extends to connect with the first or second rope 11, 12. In this embodiment, the first end 241 of the torsion spring is located near the first rope reel 22, while the second end 242 of the torsion spring is located near the second rope reel 23. Therefore, the second end 242 of the torsion spring is connected to the second rope 12 that passes through the second rope reel 23. With this structure, when the door curtain 1 is pulled downward by a person, the first and second ropes 11, 12 are stretched, causing the torsion spring 24 to twist due to the tension on the second end. When the person releases the door curtain 1 and the bottom end of the door curtain 1 is no longer connected to the door frame, the torsion spring 24 returns to its original position, causing the first and second ropes 11, 12 to be wound, and the door curtain 1 to be rolled up.

[0040] Preferably, if Figure 1 As shown, the curtain rolling mechanism 2 of this embodiment further includes a second sleeve 27, the ends of which are connected to the first cord reel 22 and the second cord reel 23, respectively. The torsion spring 24, first sleeve 25, and torsion spring retainer 26 are all located within the second sleeve 27. Of course, at least a portion of the first cord reel 22 and at least a portion of the second cord reel 23 are located outside the second sleeve 27 to allow the first and second cords 11 and 12 to wind around them. When the door curtain 1 is rolled up, it can be wound around the outer wall of the second sleeve 27.

[0041] Specifically, the first coiled rope 11 and the second coiled rope 12 can both be made of flexible steel wire ropes.

[0042] like Figure 1 As shown, the locking seat 3 of this embodiment is further provided with two handles 6 for easy operation.

[0043] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of the present invention. At the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A rolling door for a container, mounted on a door frame, characterized in that: include: a door curtain, wherein one side of the door curtain is connected to a first coiled rope, and the other side of the door curtain is connected to a second coiled rope; a rolling curtain mechanism connected to the door frame, the first winding rope connected to one end of the rolling curtain mechanism, and the second winding rope connected to the other end of the rolling curtain mechanism; A locking seat connected to the bottom end of the door curtain; A first locking mechanism connected to one end of the locking seat; The second locking mechanism is connected to the other end of the locking base at a distance from the first locking mechanism.

2. The container rolling door according to claim 1, characterized in that: The first locking mechanism includes a rotating shaft, a handle, a push-pull rod and a locking block. The handle is rotatably connected to the locking seat through the rotating shaft. One end of the push-pull rod is connected to the rotating shaft, and the other end of the push-pull rod is connected to the locking block.

3. The container rolling door according to claim 2, characterized in that: The first locking mechanism further includes a hook connected to the rotating shaft, and the hook is used to be engaged with the door frame.

4. The rolling door for container according to claim 3, characterized in that: The locking seat is made of profile, and the locking seat is provided with a receiving cavity. The push-pull rod and the locking block are located in the receiving cavity. At least a part of the hook is located in the receiving cavity. The bottom of the receiving cavity is provided with a long hole for the hook to extend out.

5. The rolling door for container according to claim 4, characterized in that: A sliding groove for guiding the translation of the locking block is also provided in the accommodating cavity.

6. The rolling door for a container according to claim 1, characterized in that: The rolling shutter mechanism includes a support shaft, a first rope winder, a second rope winder, a torsion spring, a first sleeve and a torsion spring fixer. The support shaft is used to connect to the door frame, the first rope winder and the second rope winder are respectively fixed to the two ends of the support shaft, the first rope is connected to the first rope winder, and the second rope is connected to the second rope winder. The first sleeve is provided with a shoulder, the first sleeve and the torsion spring fixer are respectively sleeved on the support shaft, and the torsion spring fixer is in contact with one end of the first sleeve away from the shoulder, the torsion spring is sleeved on the first sleeve, one end of the torsion spring is fixed to the torsion spring fixer, and the other end of the torsion spring passes through the shoulder to be connected to the first rope or the second rope.

7. The rolling door for a container according to claim 6, characterized in that: The rolling shutter mechanism further includes a second sleeve, the two ends of which are respectively connected to the first rope reel and the second rope reel, and the torsion spring, the first sleeve and the torsion spring fixer are all located inside the second sleeve.

8. The rolling door for a container according to claim 1, characterized in that: The first coiling rope and the second coiling rope are flexible steel ropes.

9. The rolling door for a container according to claim 1, characterized in that: The locking seat is also provided with two handles.

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