Door sealing structure of metro vehicle

Abstract

The utility model relates to the technical field of vehicles, and discloses a metro vehicle door sealing structure. The metro vehicle door sealing structure comprises a door frame and a vehicle door, a driving assembly extending into the door frame is arranged on the right side of the door frame, and a sliding rod located under the driving assembly is fixedly connected to the interior of the door frame; the device has the advantages that the motion form of sliding friction between the sealing strips is converted into rolling friction, then the aging speed of the sealing strips caused by sliding friction is slowed down, and the problem that in the prior art, the sealing strips cannot be aged due to sliding friction is solved. A sealing strip is fixed to the edge of the peripheral side of the subway door, a matched sealing strip is also fixed to the corresponding position of a door frame, in the sliding opening and closing process of the door, the sealing strips move in a sliding friction mode, and long-term sliding friction can cause the problem that aging of the sealing strips is accelerated.

Description

TECHNICAL FIELD

[0001] The utility model relates to traffic tool technical field, concretely is a subway vehicle door sealing structure. BACKGROUND

[0002] The subway vehicle door is the key equipment of the passenger compartment on the subway train in the rail transit system. They are designed to ensure the safety of passengers, efficient getting on and off the train, and maintaining the sealing of the car with the outside during the train running.

[0003] In the prior art, the peripheral edge of the subway door is fixed with a sealing strip, and the corresponding sealing strip is also fixed at the door frame. During the sliding opening and closing of the door, the sealing strips move in the form of sliding friction. Long-term sliding friction will cause the sealing strip to accelerate aging. Therefore, a subway vehicle door sealing structure is proposed to solve the above problems. SUMMARY

[0004] (I) Technical problems solved

[0005] In view of the deficiencies of the prior art, the utility model provides a subway vehicle door sealing structure, which has the advantages of converting the sliding friction between the sealing strips into rolling friction, thereby slowing down the aging speed of the sealing strip caused by sliding friction. The problem of long-term sliding friction leading to accelerated aging of the sealing strip is solved.

[0006] (II) Technical solutions

[0007] The utility model discloses a subway vehicle door sealing structure that solves the above-mentioned technical problems, which comprises a door frame and a door, a driving assembly extending into the door frame is arranged on the right side of the door frame, a sliding rod is fixedly connected to the inside of the door frame and located directly below the driving assembly, a door that is symmetrically distributed left and right and is transmissionally connected with the driving assembly and is matched with the door frame is slidably connected to the outside of the sliding rod, first contact rails that are symmetrically distributed left and right are fixedly connected to the top wall and the bottom wall of the inner cavity of the door frame, second contact rails matched with the first contact rails are fixedly connected to the top and the bottom of the door, winding assemblies that are symmetrically distributed up and down are arranged in the door, auxiliary wheels that are symmetrically distributed up and down and extend to the top or the bottom of the door are rotationally connected to the inside of the door, the auxiliary wheels are matched with the second contact rails, sealing strips that are wound to the outside of the winding assemblies and are in contact with the auxiliary wheels are arranged on the outside of the winding assemblies, the sealing strips are clamped between the first contact rails and the second contact rails on the same side and are fixedly connected with the side wall of the inner cavity of the door frame, and limiting blocks matched with the first contact rails, the auxiliary wheels and the sealing strips are fixedly connected to the top wall and the bottom wall of the inner cavity of the door frame.

[0008] The utility model has the advantages of:

[0009] In the subway vehicle door sealing structure, when the driving assembly drives the door to open and close in the door frame, the door slides on the outside of the sliding rod, when the door is closed and moves to the opposite side, one end of the sealing strip is fixed to the left and right side walls of the inner cavity of the door frame, and the other end is wound to the outside of the winding assembly, the door moves to the opposite side, the sealing strip is pulled out from the door, and then the sealing strip drives the winding assembly to rotate, so that the winding assembly is elastically deformed, the sealing strip is clamped between the first contact rails and the second contact rails, the friction between the sealing strip and the first contact rails and the second contact rails is reduced, the sliding friction between the sealing strips is converted into rolling friction, and the aging speed of the sealing strip caused by sliding friction is slowed down.

[0010] On the basis of the above technical scheme, the utility model can also be improved as follows.

[0011] Further, the driving assembly comprises a motor and a bidirectional screw rod, the right side of the door frame is provided with the motor whose output end extends into the door frame, the output end of the motor is fixedly connected with the bidirectional screw rod that is rotationally connected with the left wall of the inner cavity of the door frame, the sliding rod is located directly below the bidirectional screw rod, and the door that is symmetrically distributed left and right is slidably connected to the outside of the sliding rod and is threadedly connected with the bidirectional screw rod.

[0012] The beneficial effect of the further scheme is that the motor drives the bidirectional screw rod to rotate, the force generated by the rotation of the threads on the outer side of the bidirectional screw rod drives the door to slide to the opposite side of the slide rod, and the door is opened or closed in the door frame.

[0013] Further, the rolling assembly comprises a main shaft, a rolling roller and a coil spring, the inside of the door is fixedly connected with the main shaft which is symmetrically distributed up and down, the outer side of the main shaft is rotatably connected with the rolling roller, the outer side of the main shaft is fixedly connected with the coil spring which is wound to the outer side and fixedly connected with the inside of the rolling roller, and the outer side of the rolling roller is fixedly connected with the sealing strip which is wound to the outer side.

[0014] The beneficial effect of the further scheme is that the door is closed to the opposite side, the sealing strip is pulled out from the door, the rolling roller is driven to rotate on the outer side of the main shaft through the sealing strip, the coil spring is elastically deformed, and the sealing strip is clamped between the first contact rail and the second contact rail, thereby reducing the friction between the sealing strip and the first contact rail and the second contact rail, and prolonging the service life of the sealing strip.

[0015] Further, the opposite side of the door is fixedly connected with the mutually matched adhesive tape, and the opposite side of the protrusion on the front side of the door is fixedly connected with the adhesive tape matched with the door frame.

[0016] The beneficial effect of the further scheme is that when the door is closed, the adhesive tape on the opposite side of the door is clamped, a seal is formed between the doors, and the adhesive tape fixed on the opposite side of the protrusion on the front side of the door is tightly attached to the corresponding position in the door frame, so that a seal is formed between the left and right sides of the door and the door frame. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is an appearance schematic diagram of the utility model;

[0019] Figure 3 It is a door frame overhead sectional view of the utility model;

[0020] Figure 4 It is an enlarged schematic diagram of the structure at a of the utility model.

[0021] In the drawing: 1, door frame; 2, door; 3, driving assembly; 301, motor; 302, bidirectional screw rod; 4, slide rod; 5, first contact rail; 6, second contact rail; 7, rolling assembly; 701, main shaft; 702, rolling roller; 703, coil spring; 8, auxiliary wheel; 9, sealing strip; 10, limiting block; 11, adhesive tape. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the embodiments, by Figures 1-4 This invention discloses a sealing structure for a subway car door. The structure includes a door frame 1 and a door 2. A drive assembly 3 extends into the right side of the door frame 1. A sliding rod 4 is fixedly connected inside the door frame 1, located directly below the drive assembly 3. Doors 2, symmetrically distributed and connected to the drive assembly 3 and adapted to the door frame 1, are slidably connected to the outer side of the sliding rod 4. First contact rails 5, symmetrically distributed, are fixedly connected to the top and bottom walls of the inner cavity of the door frame 1. Second contact rails 6, adapted to the first contact rails 5, are fixedly connected to the top and bottom of the door 2. The interior of each door 2 is provided with a winding assembly 7 that is symmetrically distributed vertically. The interior of each door 2 is rotatably connected with auxiliary wheels 8 that are symmetrically distributed vertically and extend to their top or bottom respectively. The auxiliary wheels 8 are adapted to the adjacent second contact rail 6. The outer side of each winding assembly 7 is provided with a sealing strip 9 that is wound around its outer side and contacts the auxiliary wheel 8. The sealing strip 9 is sandwiched between the first contact rail 5 and the second contact rail 6 on the same side and is fixedly connected to the inner cavity side wall of the door frame 1. The top and bottom walls of the inner cavity of the door frame 1 are fixedly connected with limiting blocks 10 that are adapted to the first contact rail 5, the auxiliary wheel 8 and the sealing strip 9.

[0024] The drive assembly 3 includes a motor 301 and a bidirectional threaded screw 302. The right side of the door frame 1 is provided with a motor 301 whose output end extends into it. The output end of the motor 301 is fixedly connected to the bidirectional threaded screw 302, which is rotatably connected to the left wall of the inner cavity of the door frame 1. The slide rod 4 is located directly below the bidirectional threaded screw 302. The outer side of the slide rod 4 is slidably connected to a door 2 that is symmetrically distributed on the left and right and threadedly connected to the bidirectional threaded screw 302.

[0025] Motor 301 drives the bidirectional threaded screw 302 to rotate. Since the threads on the left and right sides of the bidirectional threaded screw 302 are opposite, the force generated by the rotation of the outer threads of the bidirectional threaded screw 302 then drives the door 2 to slide on the outside of the slide bar 4 to the opposite or opposite side, thereby allowing the door 2 to open or close within the door frame 1.

[0026] The winding assembly 7 comprises a main shaft 701, a winding roller 702 and a winding spring 703, the inside of the door 2 is fixedly connected with the main shaft 701 which is symmetrically distributed in up and down, the outside of the main shaft 701 is rotatably connected with the winding roller 702, the outside of the main shaft 701 is fixedly connected with the winding spring 703 which is wound to the outside and fixedly connected with the inside of the winding roller 702, the outside of the winding roller 702 is fixedly connected with the sealing strip 9 which is wound to the outside;

[0027] When the door 2 is closed to the opposite side, the sealing strip 9 is pulled out from the inside of the door 2, then the winding roller 702 is driven to rotate outside the main shaft 701 through the sealing strip 9, and the elastic deformation of the winding spring 703 is caused, so that the sealing strip 9 is clamped between the first contact rail 5 and the second contact rail 6, thereby reducing the friction between the sealing strip 9 and the first contact rail 5 and the second contact rail 6, and prolonging the service life of the sealing strip 9;

[0028] The opposite side of the door 2 is fixedly connected with the mutually matched rubber strip 11, and the opposite side of the protrusion on the front side of the door 2 is fixedly connected with the rubber strip 11 matched with the door frame 1.

[0029] When the door 2 is closed, the rubber strip 11 on the opposite side of the door 2 is clamped, thereby forming a seal between the doors 2, and the rubber strip 11 fixed on the opposite side of the protrusion on the front side of the door 2 is tightly attached to the corresponding position inside the door frame 1, thereby forming a seal between the left and right sides of the door 2 and the door frame 1.

[0030] Working principle:

[0031] First step: the motor 301 drives the bidirectional screw rod 302 to rotate, because the screw threads on the left and right sides of the bidirectional screw rod 302 are opposite in direction, the force generated by the rotation of the screw threads on the outside of the bidirectional screw rod 302 drives the door 2 to slide to the opposite side or the side away from the outside of the sliding rod 4, thereby opening or closing the door 2 in the door frame 1;

[0032] Second step: when the door 2 is closed to the opposite side, the sealing strip 9 is pulled out from the inside of the door 2, then the winding roller 702 is driven to rotate outside the main shaft 701 through the sealing strip 9, and the elastic deformation of the winding spring 703 is caused, so that the sealing strip 9 is clamped between the first contact rail 5 and the second contact rail 6, thereby reducing the friction between the sealing strip 9 and the first contact rail 5 and the second contact rail 6, and prolonging the service life of the sealing strip 9;

[0033] Third step: when the door 2 is opened to the side away from it, in the process, the winding spring 703 restores the elastic deformation, thereby driving the winding roller 702 to rotate outside the main shaft 701, and winding the sealing strip 9 outside the winding roller 702.

[0034] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it is intended to be limited only by the words recited in the appended claims. The scope of the present application shall be limited only by the claims.

[0035] While the embodiments of the present application have been shown and described with respect to particular embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application. Therefore, the scope of the application should not be limited by the embodiments, but should be defined only in accordance with the following claims and their equivalents.

Claims

1. A sealing structure for a subway car door, comprising a door frame (1) and a door (2), characterized in that: The right side of the door frame (1) is provided with a drive assembly (3) extending therein. The interior of the door frame (1) is fixedly connected with a slide rod (4) located directly below the drive assembly (3). The outside of the slide rod (4) is slidably connected with car doors (2) that are symmetrically distributed on the left and right and are connected to the drive assembly (3) and adapted to the door frame (1). The top and bottom walls of the inner cavity of the door frame (1) are fixedly connected with first contact rails (5) that are symmetrically distributed on the left and right. The top and bottom of the car door (2) are fixedly connected with second contact rails (6) that are adapted to the first contact rails (5). The interior of the car door (2) is provided with winding assemblies that are symmetrically distributed on the top and bottom. (7) The interior of each door (2) is rotatably connected with auxiliary wheels (8) that are symmetrically distributed vertically and extend to the top or bottom of the door. The auxiliary wheels (8) are adapted to the adjacent second contact rail (6). The outer side of each winding assembly (7) is provided with a sealing strip (9) that is wound around the outer side and contacts the auxiliary wheel (8). The sealing strip (9) is sandwiched between the first contact rail (5) and the second contact rail (6) on the same side and is fixedly connected to the inner wall of the door frame (1). The top and bottom walls of the inner cavity of the door frame (1) are fixedly connected with limiting blocks (10) that are adapted to the first contact rail (5), the auxiliary wheel (8) and the sealing strip (9).

2. The subway car door sealing structure according to claim 1, characterized in that: The drive assembly (3) includes a motor (301) and a bidirectional threaded screw (302). The right side of the door frame (1) is provided with a motor (301) whose output end extends into it. The output end of the motor (301) is fixedly connected to a bidirectional threaded screw (302) that is rotatably connected to the left wall of the inner cavity of the door frame (1). The slide rod (4) is located directly below the bidirectional threaded screw (302). The outer side of the slide rod (4) is slidably connected to a car door (2) that is symmetrically distributed on the left and right and threadedly connected to the bidirectional threaded screw (302).

3. The subway car door sealing structure according to claim 1, characterized in that: The winding assembly (7) includes a main shaft (701), a winding roller (702), and a coil spring (703). The main shaft (701) is fixedly connected to the inside of the door (2) in a symmetrical arrangement. The winding roller (702) is rotatably connected to the outside of the main shaft (701). The coil spring (703) is fixedly connected to the outside of the main shaft (701) and wound around it and fixedly connected to the inside of the winding roller (702). The sealing strip (9) is fixedly connected to the outside of the winding roller (702).

4. The subway car door sealing structure according to claim 1, characterized in that: Each of the opposite sides of the car door (2) is fixedly connected with a rubber strip (11) that is compatible with each other, and each of the opposite sides of the front protrusion of the car door (2) is fixedly connected with a rubber strip (11) that is compatible with the door frame (1).

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