Door curtain anti-swing device and door curtain having the same

Abstract

The present disclosure provides a curtain anti-swing device, comprising: a plate-shaped piece; a belt-shaped piece, one side of which is provided with N plate-shaped pieces, N being an integer greater than or equal to 2; wherein when the belt-shaped piece drives the plate-shaped pieces thereon to swing from a first position to a second position on the side where the plate-shaped pieces are installed, any two adjacent plate-shaped pieces abut to limit continuous swinging, wherein the first position and the second position have a specific angle therebetween.

Description

Technical Field

[0001] This disclosure relates to the field of security inspection equipment accessories, and in particular to a door curtain anti-swing device and a door curtain having the device. Background Technology

[0002] In security screening equipment such as X-ray machines, curtains are usually installed on both sides of the inspection channel to prevent X-rays from leaking out of the security screening equipment, thereby preventing personal injury to security personnel and passengers.

[0003] After an object enters or exits the inspection channel of the security screening equipment, the raised curtain will swing freely. If the distance between the curtain and the optical path is less than the length of the curtain, the curtain may swing into the optical path area. The optical path may include a detection optical path or an imaging optical path, which could lead to false detections or dirty images.

[0004] To prevent the curtain from swaying back and blocking the light path, a distance larger than the curtain's sway radius must be maintained between the light path and the curtain. This increases the overall length of the security inspection equipment, leading to higher costs and greater complexity. Alternatively, the curtain can be shortened to reduce its sway radius, but this reduces the protective effect. Related technologies offer anti-sway devices composed of multiple directly connected anti-sway plates. However, these devices lack flexibility and cannot be twisted, making them prone to detachment when passing irregularly shaped or improperly placed items.

[0005] Therefore, how to reduce the overall length of the security inspection equipment while maintaining a sufficient length of the curtain, and provide a flexible and non-slip anti-swing device to prevent the curtain from swinging into the optical path area, is an urgent problem to be solved. Summary of the Invention

[0006] In view of the above problems, this disclosure provides a door curtain anti-swing device and a door curtain having the device.

[0007] According to a first aspect of this disclosure, a door curtain anti-swing device is provided, characterized in that it comprises: a plate-shaped member; a strip-shaped member having N said plate-shaped members mounted on one side, where N is an integer greater than or equal to 2; wherein, when the strip-shaped member drives the plate-shaped members thereon to swing from a first position toward the side where the plate-shaped members are mounted to a second position, any two adjacent said plate-shaped members abut against each other to limit further swinging, wherein there is a specific angle between the first position and the second position.

[0008] In some embodiments, the strip has a longitudinal axis and extends from a first end along the longitudinal axis to a second end, the strip swinging about the first end; wherein, N plate-like members are sequentially mounted from the first end to the second end along the longitudinal axis, the abutting of two adjacent plate-like members includes: defining a pivot radius of the plate-like member closer to the second end from the abutting point as a starting point, wherein the pivot radius of different lengths is used to limit the swinging of the strip-like member to different sizes of the specific angle.

[0009] In some embodiments, each of the plate-like members includes opposing first and second sides, and each of the plate-like members includes: a third end, forming a first recess on the first side; and a fourth end, opposite to the third end and closer to the second end of the strip-like member, forming a second recess on the second side; adjacent two plate-like members are arranged such that: the third end of one is superimposed on the fourth end of the other, the superposition including the first recess of one for receiving the fourth end of the other, or the second recess of one for receiving the third end of the other.

[0010] In some embodiments, two adjacent plate-like members include a first plate-like member and a second plate-like member, the second plate-like member being closer to the second end, and the plate surface of the second plate-like member on a second side contacting the strip surface of the strip-like member; defining the pivot radius of the plate-like member closer to the second end from the abutment point as a starting point includes: the pivot radius starting from the abutment point of the first plate-like member and the second plate-like member on a first side, extending toward the second end, and ending at the end of the second plate-like member.

[0011] In some embodiments, the first position is the position where the longitudinal axis is perpendicular to the ground. When the strip is located at the first position, the longitudinal distance between the first plate and the second plate at the point of contact on the first side is less than or equal to a first threshold and greater than or equal to 0.

[0012] In some embodiments, the anti-slip device further includes a fastener, at least one fastener being configured to pass through the strip and connect to a third end of the second plate.

[0013] In some embodiments, each of the plate-shaped members includes: a fifth end; a sixth end, which is opposite to the fifth end along the longitudinal axis; two adjacent plate-shaped members are arranged such that each is independently connected to the strip, and the projections of the two adjacent plate-shaped members on the strip do not overlap.

[0014] In some embodiments, the anti-sway device further includes fasteners, and the N plate members mounted on the strip include: at least one fastener configured to pass through the fifth end and the strip, and at least one fastener configured to pass through the sixth end and the strip.

[0015] In some embodiments, two adjacent plate-like members include a third plate-like member and a fourth plate-like member, the fourth plate-like member being closer to the second end, and the fifth end of the fourth plate-like member abutting against the sixth end of the third plate-like member; defining the pivot radius of the plate-like member closer to the second end from the abutting point includes: the pivot radius extending along the thickness direction of the fourth plate-like member from the abutting point, the pivot radius being equal to the thickness of the fourth plate-like member.

[0016] In some embodiments, the first position is the position where the longitudinal axis is perpendicular to the ground. When the strip is located at the first position, the longitudinal distance between the abutment of the third plate and the fourth plate is less than or equal to a second threshold and greater than or equal to 0.

[0017] In some embodiments, the anti-sway device includes: M strips, wherein the M strips are arranged side by side along the horizontal axis, and N plates are installed on one side of each strip, where M is an integer greater than or equal to 2.

[0018] In some embodiments, the M strips are arranged side-by-side along the horizontal axis to form a plane, and when the anti-sway device is installed on the curtain, the plane is parallel to the surface of the curtain.

[0019] Another aspect of this disclosure provides a door curtain, characterized in that the door curtain includes: a door curtain body, the door curtain body including a proximal end and a distal end, wherein the proximal end is used to be fixed to a fixing bracket; and a door curtain anti-swing device as described in any of the preceding claims, fixed to the proximal end of the door curtain body.

[0020] Another aspect of this disclosure provides a security inspection device, the security inspection device comprising: an inspection channel; a scanning device for radiating rays into the inspection channel to inspect objects passing through the inspection channel; and a curtain as described above, installed at the entrance and / or the exit of the inspection channel.

[0021] The above-described one or more embodiments have the following beneficial effects: By employing a curtain anti-swing device, a strip connecting multiple plate-like components is provided, making it less likely for the plate-like components to detach. Furthermore, by utilizing the abutment of two adjacent plate-like components on the strip, the swing amplitude of the strip between the first and second positions is limited, thereby effectively suppressing the curtain's sway, effectively shortening the distance between the light path and the curtain, shortening the inspection channel length, reducing the overall machine size, and without needing to shorten the curtain length, thus improving the protective effect. Attached Figure Description

[0022] The foregoing contents, as well as other objects, features, and advantages of this disclosure, will become clearer from the following description of embodiments with reference to the accompanying drawings, in which:

[0023] Figure 1 This schematic diagram shows a three-dimensional view of the structure of a security inspection device;

[0024] Figure 2 yes Figure 1 A schematic diagram of the swinging motion of the curtain of the security inspection equipment shown;

[0025] Figure 3 A schematic diagram of the structure of a door curtain anti-swing device according to an embodiment of the present disclosure is shown.

[0026] Figure 4 This schematic diagram illustrates the structure of the strip and plate members cooperating according to an embodiment of the present disclosure;

[0027] Figure 5 A schematic side view of a strip and a plate-like member cooperating according to an embodiment of the present disclosure is shown.

[0028] Figure 6 An enlarged view of the vicinity of the fixing plate according to an embodiment of the present disclosure is schematically shown;

[0029] Figure 7 A schematic diagram of the structure of a plate-like member according to an embodiment of the present disclosure is shown.

[0030] Figure 8 A schematic diagram of the structure of the fixing plate according to an embodiment of the present disclosure is shown.

[0031] Figure 9A This schematic diagram illustrates the pivoting of the plate-like member during oscillation according to an embodiment of the present disclosure;

[0032] Figure 9B Schematic illustration Figure 9A An abstract model of the impact of changes in the central pivot radius;

[0033] Figure 10 This schematic diagram illustrates a partial structural view of the mating of a strip and a plate according to another embodiment of the present disclosure;

[0034] Figure 11A A schematic diagram illustrating the pivoting of a plate-like member during oscillation according to another embodiment of the present disclosure; and

[0035] Figure 11B Schematic illustration Figure 11A An abstract model of the impact of changes in the central rotation radius.

[0036] The reference numerals used in the above figures are as follows:

[0037] 1000 Security inspection equipment; 100 Inspection object; 200 Inspection channel; 300 Scanning device; 310 Imaging optical path; 400 Door curtain; 410 Fixed bracket; 411 Fixed plate; 500 Anti-sway device; 510 Plate-shaped component; 511 First recess; 512 Second recess; 513 First plate-shaped component; 514 Second plate-shaped component; 515 Third plate-shaped component; 516 Fourth plate-shaped component; 520 Strip-shaped component; 530 Fastener.

[0038] It should be noted that, for clarity, the dimensions of the overall / partial structure or the overall / partial region in the drawings used to describe the embodiments of this disclosure may be enlarged or reduced, i.e., these drawings are not drawn to actual scale. Detailed Implementation

[0039] The embodiments of the present disclosure will now be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the disclosure. In the following detailed description, numerous specific details are set forth to provide a thorough understanding of the embodiments of the present disclosure for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concepts of the present disclosure.

[0040] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0041] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0042] When using expressions such as "at least one of A, B, and C", they should generally be interpreted in accordance with the meaning that is commonly understood by a person skilled in the art (e.g., "a system having at least one of A, B, and C" should include, but is not limited to, a system having A alone, a system having B alone, a system having C alone, a system having A and B, a system having A and C, a system having B and C, and / or a system having A, B, and C, etc.).

[0043] Figure 1 A schematic three-dimensional view of a security inspection device 1000 is shown. Figure 2 yes Figure 1The diagram shows the swing of the curtain 400 of the security inspection equipment 1000.

[0044] It is important to note that Figure 1 and Figure 2 The diagram shown is an illustrative structure to help those skilled in the art understand the technical content of this disclosure, but it does not constitute a limitation of this disclosure.

[0045] like Figure 1 As shown, the security inspection equipment 1000 typically includes an inspection channel 200, a scanning device 300, a conveying device (not shown), and an image processing system (not shown). The scanning device 300 may include a radiation source and a detector. The radiation source radiates rays into the inspection channel 200 to inspect the object 100 passing through the inspection channel 200. The detector receives at least a portion of the rays to obtain a scanned image of the object 100. A curtain is installed at the entrance and / or exit of the inspection channel 200. The rays may include X-rays. The conveying device transports the object 100 within the inspection channel 200, and the image processing system processes the scanned images acquired by the detector. The conveying device and image processing system can be appropriately selected according to the application scenario. For example, the conveying device may be a conveyor belt, and the image processing system may be a computer and monitor used with the security inspection equipment 1000.

[0046] For example, security inspection equipment 1000 can be a CT scanner, suitable for inspecting packages, suitcases, handbags, and other items 100 at stations, airports, docks, and other locations to check for prohibited items such as drugs, explosives, and flammable materials. CT scanners can generate three-dimensional scan images of the items 100 through tomographic scanning, enabling rapid, three-dimensional imaging inspection of the items 100.

[0047] like Figure 1 and Figure 2 As shown, the object to be inspected 100 is moved from direction A to direction B and sent out of inspection channel 200. Figure 2 The curtain 400 at the exit of inspection passage 200 is shown. (As shown) Figure 2 As shown, when the object 100 passes through the curtain 400 and exits the inspection channel 200, the curtain 400 will swing back and forth. When the curtain 400 swings back into the inspection channel 200, it may block the light path, affecting the false detection of the object 100 or the formation of the image. Specifically, the light path can be a detection light path, for example, when the object 100 triggers this detection light path, it can be determined that the object 100 has exited the inspection channel 200. The light path can also be an imaging light path 310, which can scan the object 100 to generate an X-ray image. When the curtain 400 blocks the light path, it may cause false detection or contaminate the X-ray image.

[0048] Some embodiments of this disclosure provide an anti-swing device 500 and a curtain 400 having the device. (In conjunction with...) Figure 1 and Figure 2 The following further elaborates on the technical solutions provided by the embodiments of this disclosure.

[0049] Figure 3 A schematic diagram of the structure of an anti-sway device 500 according to an embodiment of the present disclosure is shown.

[0050] like Figure 3 As shown, it illustrates an anti-slip device 500 installed at the exit of inspection channel 200, with the object to be inspected 100 leaving inspection channel 200 from direction A to B. Figure 3 In the scenario shown, the anti-swing device 500 is located between the curtain body and the object being inspected 100.

[0051] In some embodiments, the curtain 400 includes a curtain body and an anti-swing device 500. The curtain body includes a proximal end and a distal end, wherein the proximal end is used to be fixed to a fixing bracket 410. The anti-swing device 500 is fixed to the proximal end of the curtain body. The curtain 400 may be a lead curtain or a composite curtain containing shielding material, which can serve to shield against radiation.

[0052] In some embodiments, the anti-swing device 500 is fixed to the side of the curtain body facing the inspection channel 200, thereby preventing the curtain strip from swinging back towards the inspection channel 200 (i.e., direction A) and blocking the light path.

[0053] In some embodiments, the anti-swing device 500 can be mounted independently of the curtain body on the fixed bracket 410. In other embodiments, the anti-swing device 500 can replace a portion of the curtain body; for example, if the original curtain body had 5 layers, the curtain body will have 4 layers after replacement. The anti-swing device 500 can replace the layer closest to the inspection channel 200. In this case, the anti-swing device 500 is made of a shielding material such as lead.

[0054] Figure 4 The schematic diagram illustrates the structure of the strip 520 and the plate 510 cooperating according to an embodiment of the present disclosure. Figure 4 Figure (a) shows one side where plate 510 is located. Figure 4 The middle figure (b) shows the side where the strip 520 is located.

[0055] like Figure 3 and Figure 4As shown, the curtain anti-swing device 500 includes a plate-shaped member 510 and a strip-shaped member 520. N plate-shaped members 510 are mounted on one side of the strip-shaped member 520, where N is an integer greater than or equal to 2. When the strip-shaped member 520 drives the plate-shaped members 510 on it to swing from a first position toward the side where the plate-shaped members 510 are mounted to a second position, any two adjacent plate-shaped members 510 abut against each other to limit further swinging. A specific angle α exists between the first position and the second position.

[0056] For example, plate-like members 510 are one of the basic components constituting the anti-swing device 500. Their shape resembles a plate, and the material can be metal or plastic, for example, formed by injection molding from ABS plastic and polycarbonate, or the sheet can be formed from polyamide. For example, it can also be formed from lead material that meets weight requirements, thus blocking X-ray leakage. Strip-like members 520 include components in the shape of a strip or other shapes, which can be used as a structure to connect multiple plate-like members 510. For example, a strip of lead or other material for mounting plate-like members 510 can be used to mount multiple plate-like members 510 in a straight line. Plate-like members 510 can be mounted on strip-like members 520 by means of adhesive, riveting, or screws.

[0057] Any two adjacent plate-shaped members 510 abutting each other constitute a stop structure. After being installed behind the strip 520, when the two plates 510 pivot from the first position to the second position (direction B to A) at a specific angle, they abut each other to prevent further pivoting, thereby limiting or even preventing the anti-swing device 500 from swinging in direction A, and correspondingly limiting or even preventing the swing of the curtain 400. In direction B, however, the two adjacent plate-shaped members 510 can pivot freely, allowing the anti-swing device 500 to swing freely in direction B. It can be understood that the two adjacent plate-shaped members may begin to abut at some point between the first and second positions, and then remain in abutting state until the swing stops at the second position.

[0058] Reference Figure 3 The first position can be the position where the curtain 400 is perpendicular to the ground, and the second position can be the ending position of the swing. Angle α is the angle between the two, which defines the range of the swing of the curtain 400 toward the inspection channel 200. For example, when the object 100 being inspected applies force to the curtain 400 in the direction from A to B, the curtain 400 and the anti-backswing device 500 swing outward from the position perpendicular to the ground (the first position), and then swing back through the first position, continuing to swing α degrees (such as 0 degrees to 10 degrees) until stopping at the second position.

[0059] Therefore, when the anti-sway device 500 swings from the first position to the second position, the adjacent plate-like members 510 abut against each other, limiting the further swinging of the strip-like member 520. This prevents the curtain 400 from swinging further inwards into the passageway and affecting the light path. For example, Figure 4 As shown, nine (for example only) plate-shaped members 510 can be installed at equal intervals on a strip 520, with the distance between adjacent plate-shaped members 510 remaining consistent to ensure that the curtain 400 can effectively prevent backswing when it swings.

[0060] In some embodiments, the aforementioned angle α can be adjusted as needed. For example, when the requirements are more stringent, the angle can be set to 0 degrees, meaning that the anti-swing device 500 is stopped from swinging further when it swings back to a vertical position, thereby stopping the curtain 400 from swinging further when it swings back to a vertical position.

[0061] For example, the curtain body can be composed of multiple curtain strips made of lead-containing material. The multiple curtain strips and the anti-sway device 500 are fixed together to the mounting bracket 410. When the curtain strips are disturbed by an external force and sway in the direction from B to A, the anti-sway device 500 can suppress the swaying of the curtain strips in the direction A. It can be understood that when the anti-sway device 500 is installed at the entrance of the inspection channel 200, the anti-sway device 500 is also installed on the side close to the inspection channel 200, and can suppress the swaying of the curtain strips in the direction B. That is, the anti-sway device 500 can suppress the swaying amplitude of the curtain strips into the inspection channel 200, thereby avoiding obstruction of the light path.

[0062] For example, suppose there is an X-ray security inspection machine. To ensure that the curtain opens quickly when the inspected object 100 passes through and to prevent excessive swaying of the curtain after the inspected object 100 has passed through, an anti-swaying device 500 is installed. During installation, nine plate-shaped pieces 510 are installed at equal intervals on a long strip-shaped piece 520. Each plate-shaped piece 510 is in contact with the surface of the strip-shaped piece 520 and remains fixed. When the strip-shaped piece 520, carrying the plate-shaped pieces 510, swings from a vertical position (first position) to a 5-degree position (second position), adjacent plate-shaped pieces 510 abut against each other to prevent further swaying. An optimal angle α can be determined beforehand through experimentation. For example, the opening and closing of the curtain 400 can be simulated, and the swaying phenomenon of the curtain and its impact on the light path under different swing angles can be observed to determine an optimal angle value.

[0063] According to embodiments of this disclosure, by employing an anti-swing device 500, multiple plate-shaped members are mounted on the strip 520, making it less likely for the plate-shaped members 510 to detach. By utilizing the abutment of two adjacent plate-shaped members 510 on the strip 520, the swing amplitude of the curtain 400 towards the inspection channel 200 between the first and second positions is limited, thereby effectively suppressing the swing of the curtain 400, effectively shortening the distance between the light path and the curtain 400, shortening the length of the inspection channel 200, reducing the overall size of the machine, and without needing to shorten the length of the curtain 400, thus improving the protective effect.

[0064] The current solution, which uses multiple directly connected plate-like components, suffers from poor flexibility and inflexibility, making it prone to detachment when passing irregularly shaped or improperly positioned objects. This disclosure provides a solution using strip-like components connected to the plate-like components, achieving an anti-swing effect while partially resolving the aforementioned problems of poor flexibility, inflexibility, and easy detachment of the anti-swing plate.

[0065] like Figure 3 and Figure 4 As shown, the strip 520 has a horizontal axis and a vertical axis, the vertical axis being... Figure 4 As shown, the direction of extension from the first end to the second end is such that the horizontal axis can be perpendicular to the vertical axis.

[0066] In some embodiments, the anti-sway device 500 includes M strip-shaped members 520, wherein the M strip-shaped members 520 are arranged side by side along the horizontal axis, and each strip-shaped member 520 has multiple plate-shaped members installed on one side, where M is an integer greater than or equal to 2. The specific parameters such as the size and shape of the M strip-shaped members 520 can be determined according to the actual size of the security inspection equipment 1000 and the design requirements of the curtain 400.

[0067] For example, the M strips 520 can be of equal length, and the specific length can be set according to actual needs. The length of the strip 520 can be less than the length of the curtain strip, such as less than half the length of the curtain strip.

[0068] In some embodiments, M strips 520 are arranged side by side along the horizontal axis to form a plane, which is parallel to the surface of the curtain 400 when the anti-sway device 500 is installed on the curtain 400.

[0069] In some embodiments, M strips 520 are arranged adjacently in a plane. The distance between adjacent strips 520 is greater than or equal to 0. In other embodiments, the M strips 520 are arranged with partial overlap between adjacent strips 520 in a plane. Thus, the anti-sway device 500 can swing freely in direction B. However, the swinging of the anti-sway device 500 in direction A is suppressed.

[0070] In some embodiments, the strip 520 extends longitudinally from a first end to a second end, and the strip 520 oscillates about the first end. N plate-like members 510 are sequentially mounted along the longitudinal axis from the first end to the second end. The contact between two adjacent plate-like members 510 includes defining a pivot radius for the plate-like member 510 closer to the second end, starting from the contact point. Different pivot radii are used to limit the oscillation of the strip 520 by specific angles of varying sizes.

[0071] The purpose of defining the pivot radius from the point of contact is to control the swing amplitude, i.e., angle α, of the curtain 400 towards the inspection channel 200. Adjusting the pivot radius between two adjacent plate-shaped pieces 5 in the anti-swing device 500 can adapt to security inspection equipment of different models and sizes. In this case, the opening and closing of the curtain 400 can be simulated in advance to observe the backswing phenomenon of the curtain under different swing angles and its impact on detection, thereby determining an optimal angle value. Then, different lengths of pivot radii can be defined to determine their corresponding angle values, so as to apply the anti-swing device in actual security inspection scenarios.

[0072] like Figure 3 , Figure 4 As shown, when the object under inspection 100 is at an angle to the direction of movement or has an irregular shape, during the movement from A to B, the object under inspection 100 applies a forward force and a lateral force to the flexible anti-sway device 500. Since the strip 520 is flexible and tortuous, and the plate-shaped members 510 are connected to the strip 520, the flexible anti-sway device 500 can be easily lifted by the object under inspection 100, and the plate-shaped members 510 will not detach, allowing the object under inspection 100 to pass smoothly.

[0073] After the inspection object 100 passes through the flexible anti-swing device 500, the anti-swing device 500, which is lifted up, swings back in direction A. When it swings back to a certain position, the adjacent plate-shaped members 510 begin to abut against each other. If the end faces are in contact, the end faces of the plate-shaped members 510 are subjected to pressure, and the strip-shaped members 520 are subjected to tension.

[0074] If the strip 520 theoretically had no extensibility, the flexible anti-sway device 500 would only swing back to the first position. However, in reality, the strip 520 is extensible, so after swinging to the first position, the flexible anti-sway device 500 will swing further towards the plate side. The purpose of the pivot radius is to control the extension allowance of the corresponding area of ​​the strip 520 when the plate 510 closer to the second end rotates along the pivot radius, thereby preventing the swing amplitude from increasing as the strip 520 extends. Furthermore, the control of the extension allowance of the adjacent plate 510 in a local area can be extended to the control of a specific angle corresponding to the entire anti-sway device 500, that is, effectively reducing the angle at which the anti-sway device 500 swings further due to the extensibility of the strip 520.

[0075] According to embodiments of this disclosure, the pivot radius can be changed by adjusting parameters such as the parameters of the plate-shaped member 510 itself and the position between adjacent plate-shaped members 510, thereby adjusting the corresponding specific angle. This anti-swing device 500 is applicable to use in curtains 400 of different usage scenarios and sizes.

[0076] Figure 5 A schematic side view of the strip 520 and plate 510 cooperating according to an embodiment of the present disclosure is shown. Figure 6 An enlarged view of the vicinity of the fixing plate 411 according to an embodiment of the present disclosure is shown schematically. Figure 7 A schematic diagram of the structure of the plate-like member 510 according to an embodiment of the present disclosure is shown. Figure 8 A schematic diagram of the structure of the fixing plate 411 according to an embodiment of the present disclosure is shown. Figure 7 Figure (a) shows the first side of the plate-shaped member 510. Figure 7 The middle figure (b) shows the second side of the plate-shaped member 510. Figure 8 Figure (a) shows one side of the fixing plate 411. Figure 8 The middle figure (b) shows the other side of the fixing plate 411.

[0077] In some embodiments, refer to Figures 5 to 7 Each plate-shaped member 510 includes opposing first and second sides. Each plate-shaped member 510 includes: a third end, on which a first recess 511 is formed on the first side; and a fourth end, on which the second end, opposite the third end and closer to the strip 520, is formed on the second side, with a second recess 512 formed on the second side. Adjacent plate-shaped members 510 are arranged such that the third end of one overlaps with the fourth end of the other, the overlap including the first recess 511 of one for receiving the fourth end of the other, or the second recess 512 of one for receiving the third end of the other, i.e., the projections of the third end of one and the fourth end of the other on the strip surface at least partially overlap.

[0078] In some embodiments, two adjacent plate-shaped members 510 include a first plate-shaped member 513 and a second plate-shaped member 514, the second plate-shaped member 514 being closer to the second end, and the plate surface of the second side of the second plate-shaped member 514 contacting the belt surface of the strip-shaped member 520. In some embodiments, such as Figure 5 As shown, the anti-sway device 500 also includes fasteners 530, wherein the third end of one fastener overlaps with the fourth end of the other, including: at least one fastener 530 is configured to pass through the strip 520 and connect to the third end of the second plate 514. The fastener 530 may include rivets or screws, etc. In the overlapping area, the first plate and the second plate can abut or separate as the strip swings.

[0079] For example, the first side and the second side are two opposite sides of the plate-shaped member 510. If the plate-shaped member 510 is rectangular overall, then the two plates on the long side are located on the first side and the second side, respectively. The first recess 511 is a recess on the first side of the plate-shaped member 510 for engaging with the fourth end of another plate-shaped member 510. The second recess 512 is a recess on the second side of the plate-shaped member 510 for engaging with the third end of another plate-shaped member 510. The first recess 511 or the second recess 512 may have a cuboid shape.

[0080] The superimposed function is to effectively reduce the angle of further swing of the flexible anti-swing device 500 caused by the extensibility of the strip 520 by superimposing the layers, so as to limit the swing amplitude of the curtain body toward the inspection channel 200.

[0081] In some embodiments, such as Figure 4 As shown, the strip 520 has a first end and a second end, the first end being a fixed end and the second end being a free end. A fixing plate 411 is used at the fixed end, and the structure of the fixing plate 411 differs from that of the strip 510. (Refer to...) Figure 8 The fixing plate 411 has at least one threaded hole, through which a fastener 530 is installed on the fixing bracket 410. The fixing plate 411 has a recess on its lower side, such as a cuboid recess, which can accommodate the third end of the first plate-shaped member 510, so that the fixing plate 411 and the first plate-shaped member 510 are superimposed.

[0082] In some embodiments, refer to Figures 3-8 The anti-sway device 500 includes multiple strip-shaped members 520, each strip-shaped member 520 having several plate-shaped members, a fixing plate 411, and related fasteners 530. The strip-shaped members 520 are characterized by flexibility, torsion, and low ductility. The fixing plate 411 is connected to the strip-shaped members 520. The plate-shaped members 510 are connected to the strip-shaped members 520. The fixing plate 411 and the plate-shaped members 510 are stacked on top of each other, and their end faces are in contact, preferably with zero spacing. The plate-shaped members 510 are stacked on top of each other, and their end faces are in contact, preferably with zero spacing.

[0083] Figure 9A A schematic diagram illustrating the pivoting of the plate-like member during oscillation according to an embodiment of the present disclosure is shown. Figure 9B Schematic illustration Figure 9A An abstract model of the impact of changes in the central rotation radius.

[0084] In some embodiments, defining the pivot radius of the plate-like member 510 closer to the second end, starting from the abutment point, includes: the pivot radius starting from the abutment point of the first plate-like member 513 and the second plate-like member 514 on the first side, extending towards the second end, and ending at the end of the second plate-like member 514. The length of the pivot radius L1 is approximately the same as the length of the first recess corresponding to the third end of the second plate-like member 514.

[0085] Reference Figure 9A and Figure 9B When the first plate-shaped member 513 and the second plate-shaped member 514 abut, angle β1 is the maximum swing angle of the second plate-shaped member 514, which is proportional to angle β2. When the second plate-shaped member 514 swings to its maximum amplitude, the line connecting the end point and the abutment point of the second plate-shaped member 514, the pivot radius L1, and the thickness direction of the second plate-shaped member 514 form a virtual triangle 1. Simultaneously, the line connecting the end point and the abutment point of the second plate-shaped member 514 and the fastening point of the first plate-shaped member (e.g., the centerline position of the fastener) forms a virtual triangle 2. (Refer to...) Figure 9B Triangle 1 and triangle 2 are collinear. When other conditions remain constant, changing the length of the pivot radius L1 changes the angle β2. The longer the pivot radius L1, the smaller the angle β2, and consequently, the smaller the angle β1. Conversely, the shorter the pivot radius L1, the larger the angle β2, and consequently, the larger the angle β1.

[0086] When pivoting around the contact point, the third end of the second plate-like member 514 applies a force toward the strip-like member 520, thereby limiting further oscillation. Therefore, the relative position and overlapping connection of the first plate-like member 513 and the second plate-like member 514 limit the range of oscillation. Defining the pivot radius L1 from the contact point ensures that when the second plate-like member 514 contacts the strip-like member 520, the oscillation is limited to a specific range, preventing excessive oscillation.

[0087] It is understandable that, in order to adapt to the different sizes of security inspection equipment 1000 and the different lengths of the curtain 400, the length of the pivot radius L1 can be adaptively predetermined.

[0088] In some embodiments, the first position is a position where the longitudinal axis is perpendicular to the ground. When the strip 520 is in the first position, the longitudinal distance between the first plate 513 and the second plate 514 at the point of contact on the first side is less than or equal to a first threshold and greater than or equal to 0.

[0089] Reference Figures 1-3 In the first position, the curtain 400 hangs down naturally, and the plate-like member 510 on the strip 520 is perpendicular to the ground. (Example) Figure 5In this embodiment, the longitudinal distance is, for example, the vertical distance between the fourth end face of the first plate-shaped member 513 and the second plate-shaped member 514. The first threshold is a preset numerical limit, for example, a first threshold of 5 millimeters.

[0090] For example, by setting the shape, size, or position of the first plate-shaped member 513 and the second plate-shaped member 514, the longitudinal distance between them can be adjusted, thereby affecting the overall swing amplitude of the anti-sway device, i.e., affecting the angle α. For example, when the longitudinal distance is small, the second plate-shaped member 514 pivots a small angle before it begins to abut against the first plate-shaped member 513. When the longitudinal distance is large, the second plate-shaped member 514 pivots a large angle before it begins to abut against the first plate-shaped member 513, forming an effective fit with the pivot radius L1.

[0091] Figure 10 A schematic diagram of a partial structure of a strip 520 and a plate 510 cooperating according to another embodiment of the present disclosure is shown. Figure 10 Figure (a) shows one side of the strip 520. Figure 10 The middle figure (b) shows one side of the plate-shaped part 510.

[0092] In some embodiments, each plate-like member 510 includes a fifth end and a sixth end, the sixth end being opposite to the fifth end along the longitudinal axis. Two adjacent plate-like members 510 are arranged such that they are each independently connected to the strip 520, and the projections of two adjacent plate-like members 510 onto the strip 520 do not overlap.

[0093] like Figure 10 Each plate-shaped member 510 has its plate surface parallel to the strip surface of the strip-shaped member 520, with one side of its plate surface contacting the strip surface of the strip-shaped member 520. The strip-shaped member 520 is used to connect two adjacent plate-shaped members 510, maintaining their relative position and spacing. Figures 5-8 Compared to the embodiment with stacked plate-like parts 510 shown, Figure 10 The plate-shaped members 510 shown are not stacked; the fifth end of one of two adjacent plate-shaped members 510 is opposite the sixth end of the other along the longitudinal axis. For example... Figure 10 The plate-shaped component 510 shown is a rectangular plate, which facilitates processing and installation to some extent.

[0094] In some embodiments, such as Figure 10 As shown, N plate-like members 510 are mounted on the strip 520, including: at least one fastener 530 configured to pass through a fifth end and the strip 520, and at least one fastener 530 configured to pass through a sixth end and the strip 520. (Refer to...) Figure 10 Each plate-shaped member 510 has two fasteners 530 at its fifth or sixth end, and these two fasteners 530 are located on the same straight line along the horizontal axis. The position of the fasteners can be the position of this straight line.

[0095] For example, fastener 530 refers to a part used to connect, fix, or clamp different components, and may include bolts, nuts, screws, etc. By fastening fastener 530 through the fifth and sixth ends and fixing it to the strip 520, loosening during use is prevented, thereby enhancing the safety and stability of the device.

[0096] Figure 11A A schematic diagram illustrating the pivoting of a plate-like member during oscillation according to another embodiment of the present disclosure is shown. Figure 11B Schematic illustration Figure 11A An abstract model of the impact of changes in the central rotation radius.

[0097] In some embodiments, such as Figure 10 As shown in Figure 11, two adjacent plate-like members include a third plate-like member 515 and a fourth plate-like member 516, with the fourth plate-like member 516 closer to the second end. The fifth end of the fourth plate-like member 516 abuts against the sixth end of the third plate-like member 515. A pivot radius defining the plate-like member 510 closer to the second end, starting from the abutment point, extends along the thickness direction of the fourth plate-like member, and the pivot radius is equal to the thickness of the fourth plate-like member. The two adjacent plate-like members may have the same thickness.

[0098] For example, the pivot radius is defined starting from the abutment point of the third plate 515 and the fourth plate 516 because this abutment point is the contact point between adjacent plate members, around which pivoting occurs. (Refer to...) Figure 11A and Figure 11B The third plate 515 and the fourth plate 516 abut together until the fourth plate 516 pivots to the maximum permissible angle γ1. A virtual triangle 3 is formed between the third plate 515 and the fourth plate 516, with an angle γ2 located at the abutment point. It is known that angles γ1 and γ2 are proportional. Figure 11B As shown, the pivot radius L2 is inversely proportional to the angle γ1. That is, the longer the pivot radius L2, the thicker the plate-shaped part, and the smaller the angle γ1. Correspondingly, the smaller the angle γ2, the smaller the swing angle of the fourth plate-shaped part, which affects the overall swing amplitude of the anti-swing device.

[0099] Continue to refer to Figure 11B When other conditions (such as the length of the plate) remain unchanged, the thicker the plate, the smaller the angle γ1. This is because the increased mass results in a larger moment of inertia and section modulus, leading to greater stiffness and stability, which in turn gives the plate a stronger resistance to swaying.

[0100] It is understandable that, in order to adapt to security inspection equipment 1000 of different sizes, the length of the pivot radius L2 can also be adaptively predetermined.

[0101] In some embodiments, the first position is a position where the longitudinal axis is perpendicular to the ground. When the strip 520 is in the first position, the longitudinal distance between the contact points of the third plate 515 and the fourth plate 516 is less than or equal to a second threshold and greater than or equal to 0.

[0102] Reference Figures 1-3 In the first position, the curtain 400 hangs down naturally, and the plate-like member 510 on the strip 520 is perpendicular to the ground. (Example) Figure 10 In this embodiment, the longitudinal distance is, for example, the vertical distance between the end faces of the third plate-shaped member 515 and the fourth plate-shaped member 516. The second threshold is a preset numerical limit, for example, a second threshold of 6 mm. The second threshold range allows adjacent plate-shaped members 510 to abut in the second position.

[0103] For example, by setting the shape, size, or position of the third plate-shaped member 515 and the fourth plate-shaped member 516, the longitudinal distance between them can be adjusted, thereby adjusting the α angle of the anti-sway device. For instance, when the longitudinal distance is small, the fourth plate-shaped member 516 pivots to a smaller angle and begins to abut against the third plate-shaped member 515. When the longitudinal distance is large, the fourth plate-shaped member 516 pivots to a larger angle and begins to abut against the third plate-shaped member 515. The α angle of the anti-sway device can be adjusted by coordinating the distance between the third plate-shaped member 515 and the fourth plate-shaped member 516 with the pivot radius L2.

[0104] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this disclosure can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this disclosure. In particular, the features described in the various embodiments and / or claims of this disclosure can be combined or combined in various ways without departing from the spirit and teachings of this disclosure. All such combinations and / or combinations fall within the scope of this disclosure.

[0105] The embodiments of this disclosure have been described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of this disclosure. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. The scope of this disclosure is defined by the appended claims and their equivalents. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of this disclosure, and all such substitutions and modifications should fall within the scope of this disclosure.

Claims

1. A door curtain anti-swing device, characterized in that, include: Plate-like parts; A strip-shaped member, on one side of which are N plate-shaped members, where N is an integer greater than or equal to 2; When the strip moves the plate on it from the first position to the second position, any two adjacent plate pieces abut against each other to limit the continued swinging. The first position is the position where the curtain is perpendicular to the ground, and the second position is the end position of the swing. There is a specific angle between the first position and the second position, which defines the range of the curtain's swing toward the inspection channel. When the object being inspected applies force to the door curtain in the direction away from the inspection channel, the door curtain and the anti-backswing device swing outward from the first position, then swing back past the first position, and continue to swing at the specific angle until they stop at the second position.

2. The anti-swing device according to claim 1, characterized in that, The strip has a longitudinal axis and extends from a first end along the longitudinal axis to a second end, and the strip oscillates about the first end; Wherein, N plate-shaped members are sequentially installed along the longitudinal axis from the first end to the second end, and the abutment of two adjacent plate-shaped members includes: Starting from the point of contact, a pivot radius is defined for the plate-like member closer to the second end, wherein different lengths of the pivot radius are used to limit the swing of the strip-like member to different sizes of the specific angle.

3. The anti-swing device according to claim 2, characterized in that, Each of the plate-like members includes opposing first and second sides, and each of the plate-like members includes: The third end forms a first recess on the first side; The fourth end, which is opposite to the third end and closer to the second end of the strip, forms a second recess on the second side; Two adjacent plate-shaped pieces are arranged such that the third end of one is superimposed on the fourth end of the other, the superposition including a first recess of one for receiving the fourth end of the other, or a second recess of one for receiving the third end of the other.

4. The anti-swing device according to claim 3, characterized in that, The two adjacent plate-shaped members include a first plate-shaped member and a second plate-shaped member, the second plate-shaped member being closer to the second end, and the plate surface on the second side of the second plate-shaped member being in contact with the strip surface of the strip-shaped member; Taking the abutment point as a starting point, the pivot radius of the plate-like member closer to the second end is defined as follows: The pivot radius begins at the point where the first plate and the second plate meet on the first side, extends toward the second end, and ends at the end of the second plate.

5. The anti-swing device according to claim 4, characterized in that, The first position is the position where the longitudinal axis is perpendicular to the ground. When the strip is located in the first position... The longitudinal distance between the first plate-shaped member and the second plate-shaped member at the abutment point on the first side is less than or equal to a first threshold, and greater than or equal to 0.

6. The anti-swing device according to claim 4, characterized in that, The anti-slip device also includes fasteners. At least one fastener is configured to pass through the strip and connect to the third end of the second plate.

7. The anti-swing device according to claim 2, characterized in that, Each of the plate-like members includes: Fifth end; The sixth end is opposite to the fifth end along the longitudinal axis; Two adjacent plate-shaped members are arranged such that each is independently connected to the strip-shaped member, and the projections of the two adjacent plate-shaped members onto the strip-shaped member do not overlap.

8. The anti-swing device according to claim 7, characterized in that, The anti-slip device further includes fasteners, and the strip-shaped member is equipped with N of the plate-shaped members, including: At least one fastener is configured to pass through the fifth end and the strip, and at least one fastener is configured to pass through the sixth end and the strip.

9. The anti-swing device according to claim 8, characterized in that, The two adjacent plate-shaped members include a third plate-shaped member and a fourth plate-shaped member, the fourth plate-shaped member being closer to the second end, and the fifth end of the fourth plate-shaped member abutting against the sixth end of the third plate-shaped member; Taking the abutment point as a starting point, the pivot radius of the plate-like member closer to the second end is defined as follows: The pivot radius starts from the abutment and extends along the thickness direction of the fourth plate-like member, and the pivot radius is equal to the thickness of the fourth plate-like member.

10. The anti-swing device according to claim 9, characterized in that, The first position is the position where the longitudinal axis is perpendicular to the ground. When the strip is located in the first position... The longitudinal distance between the contact points of the third plate and the fourth plate is less than or equal to the second threshold and greater than or equal to 0.

11. The anti-swing device according to claim 2, characterized in that, The anti-slip device includes: M strips are arranged side by side along the horizontal axis of the strips, and N plates are installed on one side of each strip, where M is an integer greater than or equal to 2.

12. The anti-swing device according to claim 11, characterized in that, M of the strips are arranged side-by-side along the horizontal axis to form a plane, and when the anti-sway device is installed on the curtain, the plane is parallel to the surface of the curtain.

13. A door curtain, characterized in that, The door curtain includes: A curtain body, the curtain body including a proximal end and a distal end, wherein the proximal end is used to be fixed to a fixing bracket; The anti-swing device for the door curtain according to any one of claims 1-12 is fixed to the proximal end of the door curtain body.

14. A security inspection device, characterized in that, The security inspection equipment includes: Inspection passage; A scanning device for radiating rays into an inspection channel to inspect objects passing through the inspection channel; The curtain as described in claim 13 is installed at the exit of the inspection channel.

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