A buffer structure for platform screen doors

Abstract

This application relates to the field of platform screen door structures, and more particularly to a buffer structure for a platform screen door, which is installed on the platform screen door body, which includes a left sliding door and a right sliding door. The buffer structure includes a first left buffer strip and a first right buffer strip. The two buffer strips are respectively embedded on the opposite side of adjacent platform screen doors and are staggered along the direction of door movement. When the two doors move and come into contact in the same direction, the first left buffer strip and the mating surface of the right sliding door form a left preset buffer distance, and the first right buffer strip and the mating surface of the left sliding door form a right preset buffer distance. These two buffer distances provide tolerance space for the movement deviation of the doors caused by physical characteristic errors, which can offset the contact distance required for non-real rear-end collisions, avoid unnecessary contact between the doors due to deviations, and thus prevent the monitoring components from misidentifying and triggering the anti-collision mechanism, resulting in unnecessary operation interruptions of the platform.

Description

Technical Field

[0001] This application relates to the field of platform screen door structures, and more particularly to a buffer structure for platform screen doors. Background Technology

[0002] In the rail transit sector, platform screen doors are crucial equipment for ensuring passenger safety and train operation order. They require precise relative sliding control between left and right sliding doors, with unidirectional movement contact scenarios (such as adjacent doors moving in the same direction to open or close corresponding train doors) being a common operating mode. To avoid equipment damage or safety risks caused by accidental collisions during door movement, existing platform screen door systems typically incorporate monitoring components on the doors. When these components detect a rear-end collision between doors, they immediately trigger an anti-collision mechanism, stopping the doors or reversing their movement to prevent collisions.

[0003] However, in practical applications, the platform screen doors themselves have certain differences in physical characteristics. For example, the uneven density of the door material leads to differences in inertia, the friction coefficient between the door and the track fluctuates, and there are slight deviations in the assembly gaps of the door. These physical characteristic errors will cause the doors to not move at the preset speed when they make contact in the same direction. That is, the right sliding door is slightly faster due to inertia or the left sliding door is slightly slower due to friction, resulting in a "non-real collision". This non-real collision is not a real collision caused by a malfunction of the door, but it will trigger the anti-collision mechanism, thereby causing the platform screen door to be interrupted and affecting the operational efficiency of rail transit.

[0004] The above issues need to be addressed. Utility Model Content

[0005] The purpose of this application is to provide a sealing structure for platform screen doors to solve the problem that when adjacent doors move in the same direction, they are prone to rear-end collisions, which triggers the anti-collision mechanism and causes the operation of the platform screen doors to be interrupted.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] In a first aspect, a sealing structure for a platform screen door is installed on a relatively sliding door body, the door body comprising a left sliding door and a right sliding door, comprising:

[0008] A buffer assembly, the buffer assembly comprising a first left buffer bar and a first right buffer bar;

[0009] The first left buffer strip is embedded in the left sliding door, and the first right buffer strip is embedded in the right sliding door;

[0010] The first left buffer bar and the first right buffer bar are staggered. When the left sliding door and the right sliding door move towards each other to close:

[0011] The first left buffer bar contacts the mating surface of the right sliding door to form a first sealing contact surface, and the first right buffer bar contacts the mating surface of the left sliding door to form a second sealing contact surface.

[0012] Furthermore, the mating surfaces of the first left buffer bar and the first right buffer bar are planar.

[0013] Furthermore, the interior of the first left buffer bar and the first right buffer bar each have at least one compressible hollow structure.

[0014] Furthermore, it includes a sealing assembly, which includes a left sealing strip disposed on the left sliding door and parallel to the first left buffer strip, and a right sealing strip disposed on the right sliding door and parallel to the first right buffer strip.

[0015] The left and right sealing strips are arranged symmetrically.

[0016] Furthermore, both the left and right sealing strips are solid structures.

[0017] Furthermore, the mating surfaces of the left and right sealing strips are arc-shaped.

[0018] Furthermore, the length of each of the left and right sealing strips is 1 / 2 of the length of the first left or right buffer strip.

[0019] Furthermore, the opposing sides of the first left buffer strip and the left sealing strip together form a clearance groove for the first right buffer strip to enter when the left sliding door and the right sliding door are closed.

[0020] Furthermore, each of the first left buffer strip, the left sealing strip, the first right buffer strip, and the right sealing strip has at least one protrusion on the side that mates with the door body, which is used for assembly and engagement with the door body.

[0021] The technical solutions provided in this application have the following advantages compared with the prior art:

[0022] This technical solution provides a buffer structure for a platform screen door, installed on the door body, which includes a left sliding door and a right sliding door. Specifically, by embedding a first left buffer strip and a first right buffer strip on opposite sides of the left and right sliding doors respectively, and staggered along the direction of door movement, when the two doors move and contact each other in the same direction, the first left buffer strip and the right sliding door contact surface form a left preset buffer distance, and the first right buffer strip and the left sliding door contact surface form a right preset buffer distance. These two buffer distances provide tolerance space for movement deviations caused by physical characteristic errors of the doors, which can offset the contact distance required for non-real rear-end collisions, avoid unnecessary contact between the doors due to deviations, and thus prevent monitoring components from misidentifying and triggering the anti-collision mechanism, resulting in unnecessary operational interruptions of the platform. This technical solution can ensure the stable operation of the platform screen door, reduce operational interruptions caused by false triggering, and improve the reliability of the anti-collision mechanism. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0026] Figure 1 This is a schematic diagram of the external structure of a sealing structure for a platform door according to this application;

[0027] Figure 2 This is a schematic diagram of the internal structure of a sealing structure for a platform door according to this application;

[0028] Figure 3 This is a schematic diagram showing the length structure of the left buffer bar, right buffer bar, and sealing assembly of this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Left sliding door;

[0031] 2. Right sliding door;

[0032] 3. Buffer assembly; 31. First left buffer bar; 32. First right buffer bar; 34. Compressible hollow structure;

[0033] 4. Sealing assembly; 41. Left sealing strip; 42. Right sealing strip;

[0034] 5. First sealing contact surface; 6. Second sealing contact surface;

[0035] 7. Clearance groove;

[0036] 8. Protrusion. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0039] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0040] To address the issue in existing technologies where unavoidable factors such as the inherent physical characteristics of platform doors (e.g., inertia differences, fluctuations in the friction coefficient of the running track, and assembly gap deviations) cause deviations between the moving speed of each door and the preset operating speed in the platform operation system, this deviation can lead to a situation where, during door movement, the right sliding door may collide with the left sliding door when the left sliding door is moving too slowly and the right sliding door is moving too fast. However, in reality, neither door has yet reached its designated position, and the monitoring component triggers the anti-collision mechanism due to the collision, forcing the doors to stop moving before they reach the position to open the train doors.

[0041] like Figures 1 to 2 As shown, a buffer structure for a platform screen door is installed on the platform screen door body, which includes a left sliding door 1 and a right sliding door 2, comprising:

[0042] The buffer assembly 3 includes a first left buffer strip 31 and a first right buffer strip 32; the first left buffer strip 31 is embedded in the side of the left sliding door 1 facing the right sliding door 2, and the first right buffer strip 32 is embedded in the side of the right sliding door 2 facing the left sliding door 1.

[0043] The first left buffer bar 31 and the first right buffer bar 32 are staggered along the door movement direction;

[0044] When the left sliding door 1 and the right sliding door 2 move and come into contact in the same direction, a left preset buffer distance D1 is formed between the first left buffer bar 31 and the mating surface of the right sliding door 2, and a right preset buffer distance D2 is formed between the first right buffer bar 32 and the mating surface of the left sliding door 1.

[0045] In detail, when the left sliding door 1 and the right sliding door 2 move in the same direction (e.g., move to the left or to the right at the same time), the staggered buffer strips form a left preset buffer distance D1 and a right preset buffer distance D2 with the mating surfaces of the opposing doors, respectively. These two distances can directly compensate for the movement deviation caused by the physical characteristics of the doors. For example, when the right sliding door moves forward slightly faster due to inertia, the left preset buffer distance D1 can offset the offset of the right sliding door. When the left sliding door moves backward slightly slower due to friction, the right preset buffer distance D2 can offset the offset of the left sliding door. The reservation of the two offsets provides fault tolerance space for the movement of the left and right sliding doors. When the two doors make non-real rear-end contact or approach, the monitoring component misidentifies and triggers the anti-collision mechanism, resulting in the interruption of the platform door movement.

[0046] Furthermore, the left preset buffer spacing D1 and the right preset buffer spacing D2 are of equal length. In a specific embodiment, the lengths of the left preset buffer spacing D1 and the right preset buffer spacing D2 are each 40mm. This design is based on the deviation generated during the movement of the door. In actual use, it is not limited to a spacing of 40mm; the specific spacing can be adjusted according to the actual operating deviation of the door. The fact that the left preset buffer spacing D1 and the right preset buffer spacing D2 are of equal length in this technical solution is to achieve symmetrical buffering and deceleration when the left sliding door 1 and the right sliding door 2 move synchronously, solving the problems of uneven door force, unstable operation, abnormal noise, and accelerated wear of the mechanism caused by asynchronous buffering on both sides.

[0047] In this embodiment, the installation of the first left buffer strip 31 and the first right buffer strip 32 is based on the door's own profile structure: both the left and right sliding doors have protruding mating surfaces on the side facing the opposite door, which naturally form a buffer base. The buffer strips can be fixed to the buffer base by adhesive bonding or by setting a dedicated door frame on the base for embedding. This installation design utilizing the door's own profile allows the first left buffer strip 31 and the first right buffer strip 32 to form a sufficient buffer gap between the protruding base and the opposite door without needing to be excessively thick.

[0048] In summary, this technical solution, through the aforementioned structural design, ensures the continuity of platform screen door operation while significantly reducing operational interruptions caused by unnecessary collisions, thereby effectively improving the reliability of the anti-collision mechanism in identifying and responding to real collision events.

[0049] In another application scenario, when two adjacent doors move to the preset closed position, the staggered arrangement of the first left buffer strip 31 and the first right buffer strip 32 can also seal the two adjacent doors, preventing them from not closing properly and creating gaps at the connection.

[0050] Furthermore, the interior of the first left buffer bar 31 and the first right buffer bar 32 each has at least one compressible hollow structure 34.

[0051] When the left sliding door 1 and the right sliding door 2 are closed, the pressure of the closing doors causes the compressible hollow structure 34 to compress and deform. This compression deformation effectively buffers the pressure while ensuring close contact with the door body. This design not only enhances the durability of the buffer strip, but also ensures that the buffer strip can withstand the buffering pressure through deformation compensation, preventing violent shaking when adjacent door bodies come into contact.

[0052] In some preferred embodiments, the compressible hollow structure 34 can be arranged in two ways: first, it can be continuously extended along the entire length of the first left buffer bar 31 or the first right buffer bar 32; second, it can be distributed in an intermittent manner along the length of the buffer bars.

[0053] In the specific embodiment shown, the preferred approach is to continuously extend along the entire length of the first left buffer strip 31 or the first right buffer strip 32. In this embodiment, there are two compressible hollow structures 34, extending in parallel. This design not only ensures the overall elasticity of the sealing strip but also significantly improves its fatigue resistance. It should be noted that the number of compressible hollow structures 34 can be flexibly adjusted according to actual application requirements; a single structure or multiple structures can be used. All these variations should be included within the scope of protection of this patent.

[0054] In one specific embodiment, the buffer structure of the platform door further includes a sealing component 4, which includes a left sealing strip 41 disposed on the left sliding door 1 and parallel to the first left buffer strip 31, and a right sealing strip 42 disposed on the right sliding door 2 and parallel to the first right buffer strip 32; the left sealing strip 41 and the right sealing strip 42 are arranged symmetrically.

[0055] It should be understood that when the left sliding door 1 and the right sliding door 2 move towards each other and close, the first left buffer strip 31 of the buffer assembly 3 contacts the mating surface of the right sliding door 2, and the first right buffer strip 32 contacts the mating surface of the left sliding door 1, forming a buffer gap; at the same time, the left sealing strip 41 of the sealing assembly 4 will contact the right sealing strip 42 to form a seal. The sealing assembly 4 is designed to prevent cold air from escaping while also preventing accidental hand contact with the connection between adjacent doors, which could result in injury.

[0056] In summary, the combination of sealing component 4 and buffer component 3 enables this technical solution not only to solve the problem of adjacent doors colliding and triggering the anti-collision mechanism during movement, but also to effectively solve the problem of needing a sealed connection to prevent cold air from escaping when adjacent doors are in position during movement.

[0057] Furthermore, both the left sealing strip 41 and the right sealing strip 42 are solid structures. It should be understood that the solid structure gives the left sealing strip 41 and the right sealing strip 42 higher structural strength and shape retention, ensuring stable sealing performance during long-term use. In addition, when the left sliding door 1 and the right sliding door 2 are closed, the compressible hollow structure in the buffer assembly 3 effectively buffers most of the door's compressive force. Therefore, the solid structure of the sealing assembly 4 not only does not affect its service life but also provides more durable sealing reliability. This combined design ensures the buffering performance of this platform sealing structure while enhancing the durability of the mating surfaces of the left sealing strip 41 and the right sealing strip 42 through the solid structure.

[0058] In a preferred embodiment, the mating surfaces of the left sealing strip 41 and the right sealing strip 42 are arc-shaped (i.e., the opposite surfaces of the left sealing strip 41 and the right sealing strip 42 are arc-shaped). During use, as the door closes, the mating surfaces of the left sealing strip 41 and the right sealing strip 42 gradually transition from point contact to surface contact. It should be understood that this design allows the contact area of ​​the left sealing strip 41 and the right sealing strip 42 to gradually increase during contact, dispersing pressure. This effectively solves the problem of excessive stress concentration when the left sealing strip 41 and the right sealing strip 42 come into contact, which could lead to damage to the left sealing strip 41 and the right sealing strip 42.

[0059] Furthermore, such as Figure 3 As shown, the length L2 of each of the left sealing strip 41 and the right sealing strip 42 is half the length L1 of the first left buffer strip 31 or the first right buffer strip 32. It should be noted that limiting the length L2 of the left sealing strip 41 and the right sealing strip 42 to half the length L1 of the first left buffer strip 31 or the first right buffer strip 32 not only helps to enhance the seal but also avoids increasing the sliding resistance of the door or interfering with other components due to excessive length, while also preventing unnecessary material waste.

[0060] Specifically, the opposing sides of the first left buffer strip 31 and the left sealing strip 41 form an obstacle groove 7 for the first right buffer strip 32 to enter when the left sliding door 1 and the right sliding door 2 are closed.

[0061] As the left sliding door 1 and right sliding door 2 move towards each other and close, the distance between the two doors gradually decreases, and the first right buffer strip 32 on the right sliding door 2 gradually approaches the left sliding door 1. Since the first left buffer strip 31 and left sealing strip 41 on the left sliding door 1 are parallel and have gaps on their opposite sides, the clearance groove 7 formed by them is precisely aligned with the movement path of the first right buffer strip 32. When the two doors are about to close completely, the first right buffer strip 32 precisely enters the clearance groove 7. At this time, the mating surface of the first right buffer strip 32 gradually fits against the inner wall of the clearance groove 7. After the doors are completely closed, the first right buffer strip 32 is stably positioned in the clearance groove 7, functioning independently with the first left buffer strip 31 and left sealing strip 41 without interfering with each other. Simultaneously, the left sealing strip 41 and right sealing strip 42 come into contact, at which point the buffer assembly 3 and sealing assembly 4 simultaneously perform their sealing function.

[0062] In one embodiment, the first left buffer strip 31, the left sealing strip 41, the first right buffer strip 32, and the right sealing strip 42 each have at least one protrusion 8 on the side that abuts against the door body for assembly and engagement with the door body.

[0063] It should be understood that the door body that cooperates with the protrusion 8 is also provided with the same number of grooves. The sealing strip is assembled and fixed on the door body by the snap-fit ​​cooperation between the protrusion 8 and the groove.

[0064] In some embodiments, a sealing strip profile is provided on the side of the door, with multiple grooves arranged along the length of the sealing strip to securely mount the protrusions 8 on the sealing strip. This design effectively prevents the sealing strip from detaching from the door.

[0065] In addition, it should be noted that the first left buffer strip 31, the left sealing strip 41, the first right buffer strip 32, and the right sealing strip 42 mentioned above are made of rubber. Of course, they are not limited to rubber; any material with buffering properties is acceptable. The specific choice depends on the actual usage requirements.

[0066] In summary, this technical solution effectively solves the problem of cold and warm air loss caused by gaps after the platform doors are closed by setting buffer components 3 on the opposite sides of the left sliding door 1 and the right sliding door 2, staggering the first left buffer strip 31 and the first right buffer strip 32, and cooperating with the sealing component 4.

[0067] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0068] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0069] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0070] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0071] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0072] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0073] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0074] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A buffer structure of a platform door installed on a platform door body including a left sliding door and a right sliding door, characterized in that, include: A buffer assembly, the buffer assembly comprising a first left buffer bar and a first right buffer bar; The first left buffer strip is embedded in the left sliding door on the side facing the right sliding door, and the first right buffer strip is embedded in the right sliding door on the side facing the left sliding door; The first left buffer bar and the first right buffer bar are staggered along the direction of door movement; When the left and right sliding doors move in the same direction to contact each other, a left preset buffer gap is formed between the end of the first left buffer bar and the mating surface of the right sliding door, and a right preset buffer gap is formed between the end of the first right buffer bar and the mating surface of the left sliding door.

2. The buffer structure for a platform door according to claim 1, characterized in that: The lengths of the left preset buffer spacing and the right preset buffer spacing are equal.

3. The buffer structure for a platform door according to claim 1, characterized in that: The first left buffer bar and the first right buffer bar each have at least one compressible hollow structure inside.

4. The buffer structure for a platform door according to claim 1, characterized in that: The system includes a sealing assembly, which includes a left sealing strip disposed on the left sliding door and parallel to the first left buffer strip, and a right sealing strip disposed on the right sliding door and parallel to the first right buffer strip. The left and right sealing strips are arranged symmetrically.

5. The buffer structure for a platform door according to claim 4, characterized in that: Both the left and right sealing strips are solid structures.

6. The buffer structure for a platform door according to claim 4, characterized in that: The mating surfaces of the left and right sealing strips are arc-shaped.

7. The buffer structure for a platform door according to claim 4, characterized in that: The length of each of the left and right sealing strips is 1 / 2 of the length of the first left or the first right buffer strip.

8. The buffer structure for a platform door according to claim 4, characterized in that: The opposing sides of the first left buffer strip and the left sealing strip together form a clearance groove for the first right buffer strip to enter when the left sliding door and the right sliding door are closed.

9. A buffer structure for a platform door according to any one of claims 4-8, characterized in that: The first left buffer strip, the left sealing strip, the first right buffer strip, and the right sealing strip each have at least one protrusion on the side connected to the door body that is assembled and snapped into the door body; The door body has a groove that corresponds to the protrusion.

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