Sealing structure

Abstract

The utility model discloses a sealing structure in the field of rail transit, and the sealing structure comprises a first sealing part, one side of the first sealing part is provided with a first protrusion, one end part of the protrusion is provided with a first cavity, and an electronic sensitive edge is fixed in the first cavity; a butt joint area of the first protrusion is arranged on one side of the second sealing piece; the first protrusion and / or the butt joint area are / is stressed and relatively move to be attached, sealing of the contact ends of the first sealing piece and the second sealing piece is achieved, and the first protrusion is stressed so that the electronic sensitive edge can be started. The electronic sensitive edge is arranged at the end of the first middle protrusion, so that when an object is retained between the first sealing part and the second sealing part, the electronic sensitive edge can capture pressure at the first time, namely, the pressure can be quickly fed back to a control system, the two sealing parts are separated, and safety is improved.

Description

Technical Field

[0001] The present application relates to the field of rail transit technology, and in particular to a sealing structure. Background Art

[0002] At present, the existing sensitive triggering method of rail vehicle door system is mainly patented - CN2017111291733 - door sealing strip and its installation method: an electronic sensitive edge is installed in the middle of the sealing strip to detect obstacles by squeezing the electronic sensitive edge through large deformation of the rubber strip, so as to detect obstacles as small as possible. However, the electronic sensitive edge is installed in the middle of the sealing strip and the trigger is not sensitive. If it encounters a wrapping belt, it may cause people on the outside of the vehicle to be injured due to the dragging of obstacles, or it may cause the inside of the vehicle to be dragged by obstacles and affect the normal operation of the vehicle. Rail vehicle door systems require higher comfort, safety and reliability, so the sensitive triggering structure has higher requirements. Utility Model Content

[0003] The purpose of the present application is to provide a sealing structure to solve the defect of low triggering sensitivity of the vehicle door sealing strip in the prior art.

[0004] In order to achieve the above objectives, this application is implemented by adopting the following technical solutions:

[0005] A sealing structure comprising:

[0006] A sealing member 1, wherein a protrusion 1 is provided on one side of the sealing member 1, a cavity 1 is provided on the end of the protrusion 1, and an electronic sensitive edge is fixed in the cavity 1;

[0007] A second sealing member, wherein a docking area of ​​the first protrusion is provided on one side of the second sealing member;

[0008] The protrusion 1 and / or the docking area are subjected to relative movement and fit, thereby achieving sealing of the contact ends of the sealing member 1 and the sealing member 2. The protrusion 1 is subjected to force to activate the electronic sensitive edge.

[0009] A further solution of the present application also includes a first door frame and a second door frame, wherein the first door frame and the second door frame have mounting grooves on their opposite surfaces, the seal one has a mounting flange one on a side facing away from the protrusion one, and the seal two has a mounting flange two on a side facing away from the docking area, and the mounting flanges one and two are fixed in the mounting grooves in a one-to-one correspondence.

[0010] In a further solution, both the sealing member 1 and the mounting flange 1 are provided with a cavity 2, and the sealing member 2 and the mounting flange 2 are provided with a cavity 3.

[0011] In a further solution, when the first seal and the second seal are attached to each other, the vertical center line of the second mounting flange is collinear with the vertical center line of the first mounting flange.

[0012] In a further solution of the present application, a second protrusion is provided on the inner wall of the first cavity, and the second protrusion contacts the electronic sensitive edge.

[0013] In a further solution of the present application, a third sealing lip, a second sealing lip and a first sealing lip are provided on the inner wall of the docking area of the first protrusion, and the height of the first sealing lip is higher than that of the third sealing lip and the second sealing lip.

[0014] In a further solution, the third sealing lip and the second sealing lip are symmetrically arranged on the inner walls on both sides of the docking area.

[0015] In a further solution, the edges of the opposite surfaces of the first seal and the second seal are provided with rounded corners.

[0016] The beneficial effects of the present application are as follows:

[0017] In the present application, a first protrusion is provided on the first seal, and a corresponding docking area is provided on the second seal to facilitate the docking and sealing of the first seal and the second seal. An electronic sensitive edge is provided at the end of the first protrusion. This enables the electronic sensitive edge to capture the pressure immediately when there is an object trapped between the first seal and the second seal, that is, to quickly feed back to the control system, realize the separation of the two seals, improve safety. At the same time, the dragging of the object will also activate the electronic sensitive edge, and the sensitivity of the structure is greatly improved, avoiding the large deformation of the rubber strip to trigger the electronic sensitive edge.

[0018] Among them, a third sealing lip, a second sealing lip and a first sealing lip are provided in the second seal. The multiple sealing lips can greatly increase the overlapping amount between the two seals, improve the sealing degree, and the presence of the sealing lips makes the electronic sensitive edge trigger more sensitively when encountering an obstacle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the sealing structure in the embodiment of the present application;

[0020] Figure 2 It is a schematic structural diagram of the first seal in the embodiment of the present application;

[0021] Figure 3 It is a schematic structural diagram of the second seal in the embodiment of the present application.

[0022] Among them: 1. First door frame; 2. First seal; 3. Electronic sensitive edge; 4. Second seal; 5. Second door frame;

[0023] 2-1. Mounting flange one; 2-2. Protrusion one; 2-3. Cavity one; 2-4. Cavity two; 2-5. Protrusion two;

[0024] 4-1. Mounting flange two; 4-2. Sealing lip one; 4-3. Sealing lip two; 4-4. Sealing lip three; 4-5. Cavity three. Specific implementation manner

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present application and its application or use. Embodiment 1

[0026] As Figure 1 and Figure 2 shown, this embodiment discloses a sealing structure, which includes a sealing member one 2 and a sealing member two 4 arranged oppositely. The sealing structure in this embodiment is applied to the train door. A first door frame 1 and a second door frame 5 are provided at each inlet and outlet of the train. The sealing member one 2 is fixed on one side of the first door frame 1, and the sealing member two 4 is fixed on one side of the second door frame 5. A protrusion one 2-2 is provided on the side of the sealing member one 2 away from the first door frame 1. A cavity one 2-3 is provided on the side of the protrusion one 2-2 away from the second door frame 5. An electronic sensitive edge 3 is fixed in the cavity one 2-3. A plurality of protrusions two 2-5 are uniformly arranged on the inner wall of the cavity one 2-3. The plurality of protrusions two 2-5 wrap the electronic sensitive edge 3. Driven by the door driving device of the train, the second door frame 5 and the first door frame 1 move relative to each other until the two sealing members contact. If there is an obstacle between the two sealing members, when the obstacle contacts and presses the protrusion one 2-2, the pressure will act on the electronic sensitive edge 3 by the protrusion two 2-5 in the first time. When the maximum safety value set by the electronic sensitive edge 3 is operated, the electronic sensitive edge 3 sends a signal to the control center. Embodiment 2

[0027] This embodiment has made better technical improvements compared to the previous embodiment. In this embodiment, for the first door frame 1 and the second door frame 5, mounting grooves are provided on the opposite surfaces of the first door frame 1 and the second door frame 5. The first mounting flange 2-1 and the second mounting flange 4-1 are fixedly arranged in the mounting grooves in a one-to-one correspondence. The cross-section of the mounting groove is convex-shaped. Only the peripheries of the ends of the first mounting flange 2-1 and the second mounting flange 4-1 extend to form limiting flanges. The first mounting flange 2-1 and the second mounting flange 4-1 are of a mushroom-like structure. The first seal 2 and the second seal 4 in this embodiment are both made of flexible materials. When installing each seal, when the first mounting flange 2-1 and the second mounting flange 4-1 enter the corresponding mounting grooves, the entire mounting flange is compressed until the limiting flange enters the mounting groove and then releases and resets to form. At this time, the limiting flange will firmly fix the corresponding first seal 2 and second seal 4, which is convenient for installation and has strong stability.

[0028] Both the first seal 2 and the first mounting flange 2-1 are provided with a second cavity 2-4, and the second seal 4 and the second mounting flange 4-1 are provided with a third cavity 4-5. The design of such cavities 2-4 is convenient for the installation of the seals on the one hand. On the other hand, if the electronic sensitive edge 3 fails, the corresponding third cavity 4-5 and second cavity 2-4 are convenient for expanding the deformation amount of the seals, reducing the damage to the clamped object. This embodiment is more practical when the clamped object is various limbs of the human body, reducing the harm to the human body.

[0029] In addition, when the first seal 2 is attached to the second seal 4, the vertical center lines of the second mounting flange 4-1 and the first mounting flange 2-1 are collinearly arranged to ensure the coincidence degree when the first seal 2 and the second seal 4 are installed and attached. Usually, the coincidence degree of the sealing structure will be further designed. The inner walls of the docking areas of the first protrusion 2-2 are provided with a third sealing lip 4-4, a second sealing lip 4-3, and a first sealing lip 4-2. The height of the first sealing lip 4-2 is higher than that of the third sealing lip 4-4 and the second sealing lip 4-3. The third sealing lip 4-4 and the second sealing lip 4-3 are symmetrically arranged on the inner walls on both sides of the docking area. The setting of multiple sealing lips greatly increases the coincidence amount between the two seals, ensuring that even very small obstacles can be detected. When necessary, rounded corners are provided at the edges of the opposite surfaces of the first seal 2 and the second seal 4.

[0030] It should be noted here that whether it is Embodiment 1 or Embodiment 2, the first seal 2 and the second seal 4 therein are both made of rubber strips. Embodiment 3

[0031] This embodiment discloses a method or principle for using (triggering) a sealing structure, and its steps include:

[0032] First, set the pressure safety value of the electronic sensitive edge 3;

[0033] During the door closing process, when an obstacle squeezes the seal 2, the protrusion 2-2 of the seal 2 is squeezed against the cavity 2-3 (dragging will cause the protrusion 2-2 to first shift left and right and squeeze the cavity 2-3, causing the protrusion 2-5 and the second protrusion to press against the electronic sensitive edge 3. Since the wall thickness of the cavity 2-3 where the electronic sensitive edge is installed is very thin. When encountering an obstacle, the obstacle directly squeezes the electronic sensitive edge without the need for excessive deformation of the rubber strip to trigger it, making the electronic sensitive edge 3 more sensitive to trigger). The electronic sensitive edge 3 detects the pressure and transmits the signal to the cab control center system. The control center system determines whether to open the door. When the detected force is higher than the set safety value, the control center system issues an open door command, ensuring the safe operation of the train while guaranteeing safety;

[0034] After the door is closed, due to the certain overlap of the sealing lip 4-4, the sealing lip 4-3 of the seal 2 and the protrusion 2-2 of the seal 2, the sealing performance is better. And when encountering an obstacle, the presence of the sealing lip makes the trigger more sensitive. The sealing lip 4-2 of the seal 1 has an overlap with the seal 2 to achieve the sealing effect. (If there is no sealing lip 4-4 and sealing lip 4-3, sealing can also be achieved, but the effect is poor and the obstacle detection sensitivity is reduced). See Figure 1 When the seal 2 and the seal 4 are installed, there is a large overlap between the two rubber strips, ensuring that even very small obstacles can be detected. And the protrusion 2-2 has a large protrusion amount. When squeezing an obstacle (seal), the deformation amount of the rubber strip is small, which can effectively avoid the increase of the obstacle extraction force due to the deformation of the rubber strip. The requirements for the extraction force can be seen (Standard 14752), and the obstacle can be directly pulled out without affecting the normal and safe operation of the train.

[0035] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "plurality" is two or more.

[0036] In the description of this application, it should be noted that unless otherwise clearly stipulated and defined, the terms "installed", "connected", and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

Claims

1. A sealing structure, characterized in that: include: A sealing member (2), wherein a protrusion (2-2) is provided on one side of the sealing member (2), a cavity (2-3) is provided on the end of the protrusion (2-2), and an electronic sensitive edge (3) is fixed in the cavity (2-3); A second sealing member (4), wherein a docking area of ​​the first protrusion (2-2) is provided on one side of the second sealing member (4); The protrusion 1 (2-2) and / or the docking area are subjected to relative movement and fit, thereby achieving sealing of the contact ends of the sealing member 1 (2) and the sealing member 2 (4), and the protrusion 1 (2-2) is subjected to force to activate the electronic sensitive edge (3).

2. The sealing structure according to claim 1, characterized in that: The invention also comprises a first door frame (1) and a second door frame (5), wherein mounting grooves are provided on opposing surfaces of the first door frame (1) and the second door frame (5), a mounting flange 1 (2-1) is provided on a side of the sealing member 1 (2) facing away from the protrusion 1 (2-2), and a mounting flange 2 (4-1) is provided on a side of the sealing member 2 (4) facing away from the docking area, and the mounting flanges 1 (2-1) and 2 (4-1) are fixed in the mounting grooves in a one-to-one correspondence.

3. The sealing structure according to claim 2, characterized in that: The sealing member 1 (2) and the mounting flange 1 (2-1) are both provided with a cavity 2 (2-4), and the sealing member 2 (4) and the mounting flange 2 (4-1) are both provided with a cavity 3 (4-5).

4. The sealing structure according to claim 2, characterized in that: When the sealing member 1 (2) and the sealing member 2 (4) are in contact with each other, the vertical center line of the mounting flange 2 (4-1) and the vertical center line of the mounting flange 1 (2-1) are arranged colinearly.

5. The sealing structure according to claim 1, characterized in that: A second protrusion (2-5) is provided on the inner wall of the first cavity (2-3), and the second protrusion (2-5) is in contact with the electron sensitive edge (3).

6. The sealing structure according to claim 1, characterized in that: The inner wall of the docking area of ​​the protrusion one (2-2) is provided with a sealing lip three (4-4), a sealing lip two (4-3) and a sealing lip one (4-2), and the sealing lip one (4-2) is arranged at a height higher than the sealing lip three (4-4) and the sealing lip two (4-3).

7. The sealing structure according to claim 6, characterized in that: The sealing lip three (4-4) and the sealing lip two (4-3) are arranged on the inner walls on both sides of the docking area in a mirror-symmetrical manner.

8. The sealing structure according to any one of claims 1 to 7, characterized in that: The edges of the opposite surfaces of the sealing member 1 (2) and the sealing member 2 (4) are provided with rounded corners.

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