Built-in sliding door system

Abstract

The utility model discloses a built-in sliding door system which comprises a bearing driving mechanism, a left door leaf, a right door leaf, a left lower guide rail, a right lower guide rail and lifting sealing devices arranged at the tops or the bottoms of the door leaves respectively, and each lifting sealing device comprises a rubber strip, a collision block and a lifting unit. The lifting unit is of a connecting rod structure, a compression spring is arranged between the rubber strip and the lifting unit, when the door closing collision block is extruded, the collision block moves in the direction opposite to the extrusion force, the collision block drives the lifting unit to apply pressure to the rubber strip, sealing between the rubber strip and the door leaf is achieved, and when the door is opened, the lifting unit is reset under the acting force of the compression spring. By additionally arranging the lifting sealing devices on the upper portion and the lower portion of the door leaf, compression sealing of the upper rubber strip and the lower rubber strip is formed at the closing moment of the built-in sliding door, the air tightness of the built-in sliding door is effectively improved, the problem that the air tightness of the built-in sliding door is poor is solved, and the sealing rubber strip leaves the sealing face at the opening moment. And the problem that the adhesive tape scratches the sealing surface or the door cannot be opened in the door opening process is solved.

Description

Technical Field

[0001] The utility model relates to the field of rail transit vehicles, in particular to a built-in sliding door system. Background Art

[0002] The built-in doors of urban rail are mainly divided into straddle-type built-in sliding doors and bottom-insert built-in sliding doors. Both are sealed with front and rear rubber strips and sealing brushes. When opening and closing the door, the door leaf moves in a straight line along the inner side of the car body. The car body is equipped with sealing strips or brushes to seal with the door. The height distance between the sealing strip or the lower guide rail and the door panel is fixed, and there is a gap and the sealing performance is poor. Utility Model Content

[0003] Purpose of the utility model: The purpose of the utility model is to provide a built-in sliding door system that improves sealing without changing the interface of the vehicle body door leaf.

[0004] Technical solution: The built-in sliding door system described in the utility model includes a load-bearing drive mechanism, a left door leaf, a right door leaf, a left lower guide rail, a right lower guide rail, and a lifting and sealing device respectively arranged at the top or bottom of the door leaf, the lifting and sealing device includes a rubber strip, a bump block and a lifting unit; the lifting unit is a connecting rod structure, and a compression spring is provided between the rubber strip and the lifting unit. When the bump block is subjected to extrusion pressure when closing the door, the bump block moves in the opposite direction of the extrusion force, and the bump block drives the lifting unit to apply pressure to the rubber strip to achieve sealing between the rubber strip and the door leaf. When the door is opened, the lifting unit is reset under the action of the compression spring.

[0005] Furthermore, the lifting unit includes a sliding rod, a connecting rod and a cylindrical pin.

[0006] Optionally, the lifting unit is replaced by an electric structure.

[0007] Furthermore, the lifting unit includes a sensor, a judgment controller, a cylinder and a bracket, and the telescopic end of the cylinder is connected to the rubber strip through the bracket.

[0008] Preferably, an L-shaped sealing plate is further provided on the upper portion of the door leaf.

[0009] Furthermore, the built-in sliding door system also includes a left sealing strip assembly, a right sealing strip assembly, side sealing strips and a rear stop strip.

[0010] Preferably, the adhesive strip is an eight-shaped adhesive strip.

[0011] Beneficial effects: Compared with the prior art, the present invention has the following advantages: 1. The present invention increases the lifting and sealing devices on the upper and lower parts of the door leaf, so that the upper and lower rubber strips are compressed and sealed at the moment the built-in sliding door is closed, thereby effectively improving the airtightness of the built-in sliding door and solving the problem of poor airtightness of the built-in sliding door; 2. At the moment the built-in sliding door is opened, the lifting devices on the upper and lower parts of the door leaf are reset, and the rubber strip leaves the sealing surface, thereby avoiding the problem of the rubber strip and the sealing surface scratching or the door being unable to be opened during the door opening process; 3. The present invention forms an overlapping seal with the side sealing strips and the rear stop strips through the lifting and sealing devices and the left and right sealing strip assemblies, thereby improving the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the front view of the utility model;

[0013] Figure 2 This is the rear view of the utility model;

[0014] Figure 3 This is a schematic diagram of the installation of the lifting unit;

[0015] Figure 4 is a motion diagram of the lifting unit;

[0016] Figure 5 This is a sealing diagram of the lifting and sealing device on the upper part of the door leaf;

[0017] Figure 6 This is a sealing diagram of the lifting and sealing device at the lower part of the door leaf;

[0018] Figure 7 This is a schematic diagram of the installation of side sealing strips and rear bumper strips;

[0019] Figure 8 Schematic diagram of the lifting unit with a connecting rod structure. DETAILED DESCRIPTION

[0020] The technical solution of the present utility model will be further described below with reference to the accompanying drawings.

[0021] The built-in sliding door system described in this utility model includes a load-bearing drive mechanism 1, a sealing plate 2, a left sealing strip assembly 3, a right sealing strip assembly 4, a left door leaf 5, a right door leaf 6, a left lower guide rail 7, a right lower guide rail 8, a lifting and sealing device 9 at the upper portion of the left door leaf, a lifting and sealing device 10 at the upper portion of the right door leaf, a lifting and sealing device 11 at the lower portion of the left door leaf, a lifting and sealing device 12 at the lower portion of the right door leaf, side sealing strips 17, and a rear stop strip 18. The upper portion of the door leaf is connected to a load-bearing trolley, which is equipped with load-bearing wheels for guiding within the load-bearing mechanism. The sealing plate 2 is L-shaped.

[0022] The lifting seal device includes a rubber strip 13, a bumper 14, and a lifting unit. The lifting seal unit is a connecting rod structure, comprising a slide rod, a connecting rod, and a cylindrical pin. A compression spring is interposed between the rubber strip and the lifting seal unit. When the door closing bumper is subjected to compressive force, the bumper moves in the direction opposite to the compressive force, driving the lifting unit to apply pressure to the rubber strip, achieving a seal between the rubber strip and the door leaf. When the door is opened, the lifting unit returns to its original position under the force of the compression spring. The rubber strip 13 is a figure-eight rubber strip.

[0023] In one embodiment, the lifting unit is replaced with an electric structure. The lifting unit includes a sensor, a judgment controller, a cylinder, and a bracket. The retractable end of the cylinder is connected to the rubber strip via the bracket. The sensor receives the position signal of the impact block 14, and the judgment controller controls the extension and retraction of the cylinder to achieve the lifting and lowering of the rubber strip.

[0024] The bearing rails on the supporting mechanism are integral rails to accommodate the sliding door's installation space. They connect to the door body through mounting holes. The bearing rails are mounted on the driving components, door lock assembly, and door control assembly. The door controller transmits commands to the motor in the driving mechanism, which rotates the lead screw and other components. When fully closed, the locking assembly locks the door leaf in place. When opening, the door leaf releases the locking assembly, allowing the door to open and close. When fully closed, the door leaf can spring open by operating the emergency release mechanism in the locking assembly, or it can be opened and closed manually.

[0025] A lower guide rail 16 is installed at the lower part of the door leaf for guiding and limiting the door leaf during opening and closing.

[0026] When closing the door, the rear guard strip 18 overlaps and seals with the side sealing strips 17 installed on the vehicle body, and the upper and lower lifting devices of the door leaf contact the sealing plate 2 and the floor surface 15 to form a reliable compression seal. When opening the door, the bumpers 13 of the left and right symmetrically arranged lifting devices disengage and return to their positions, causing the strips 13 installed on the lifting and sealing devices to rise in the height direction, the rear guard strip leaves the side sealing strips, and the upper and lower sealing strips leave the sealing plate 2 and the floor surface 15, thereby realizing the door opening action.

Claims

1. A built-in sliding door system, comprising a bearing drive mechanism (1), a left door leaf (5), a right door leaf (6), a left lower guide rail (7) and a right lower guide rail (8), characterized in that: The invention also includes a lifting and sealing device respectively arranged at the top or bottom of the door leaf, the lifting and sealing device including a rubber strip (13), a bumper (14) and a lifting unit; the lifting unit is a connecting rod structure, and a compression spring is provided between the rubber strip and the lifting unit. When the door closing bumper is subjected to an extrusion force, the bumper moves in a direction opposite to the extrusion force, and the bumper drives the lifting unit to apply pressure to the rubber strip, thereby achieving sealing between the rubber strip and the door leaf. When the door is opened, the lifting unit is reset under the action of the compression spring.

2. The built-in sliding door system according to claim 1, characterized in that: The lifting unit includes a sliding rod, a connecting rod and a cylindrical pin.

3. The built-in sliding door system according to claim 1, characterized in that: The lifting unit is replaced by an electric structure.

4. The built-in sliding door system according to claim 3, characterized in that: The lifting unit includes a sensor, a judgment controller, a cylinder and a bracket, and the telescopic end of the cylinder is connected to the rubber strip through the bracket.

5. The built-in sliding door system according to claim 1, characterized in that: An L-shaped sealing plate (2) is also provided on the upper part of the door leaf.

6. The built-in sliding door system according to any one of claims 1 to 5, characterized in that: It also includes a left sealing strip assembly (3), a right sealing strip assembly (4), a side sealing strip (17) and a rear stop strip (18).

7. The built-in sliding door system according to claim 6, characterized in that: The adhesive strip (13) is an eight-shaped adhesive strip.

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