Sliding door assembly for train compartment

Abstract

The utility model relates to a sliding door assembly for partition in a train compartment. Comprising an upper sliding rail module, a lower sliding rail module and a door plate body, the door plate body is connected with the upper sliding rail module, and the lower portion of the door plate body is supported through the lower sliding rail module; the sliding rail is characterized in that the upper sliding rail module comprises an outer sliding rail, an inner sliding rail, a ball and a connecting piece; the outer sliding rail is arranged on the upper portion of a carriage door frame, the inner sliding rail is embedded in the outer sliding rail, balls are arranged between the inner sliding rail and the outer sliding rail, and therefore the inner sliding rail slides in the outer sliding rail in a reciprocating mode, and a connecting piece is arranged on the inner sliding rail and further connected with the door plate body. The assembly is simple in structure, the follow-up and stop function of the door plate body is achieved while the bearing capacity of the guide rail is improved, the stability of the door plate body is ensured, and the risk that passengers are injured by collision is reduced.

Description

Technical Field

[0001] This utility model relates to the field of public trains, specifically a sliding door assembly for use as a partition in train carriages. Background Technology

[0002] Sliding doors are widely used in the interior design of rail transit systems. The principle of sliding doors is to use a sliding device to suspend the door body between the upper slide rail and the lower slide rail. By the user grasping the door handle and applying force back and forth, the sliding door can slide back and forth and separate two independent spaces through the door body, reducing or eliminating external noise or impact sounds.

[0003] Currently, the commonly used sliding mechanism for sliding doors adopts a symmetrical structure with an upper pulley track and a lower pulley track. In this structure, since the upper pulley track also bears the weight of the sliding door, after long-term use, problems such as uneven sliding, friction noise, shaking noise, poor guiding effect, and inability to stop the door at any position are likely to occur. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned defects and propose a sliding door assembly that has low frictional resistance during sliding, is not prone to shaking or noise, and can stop at any position.

[0005] To achieve the above objectives, this utility model is implemented as follows:

[0006] A sliding door assembly for a train carriage includes an upper slide rail module, a lower slide rail module, and a door panel body. The upper and lower slide rail modules are respectively disposed on the upper and lower parts of the carriage door frame. The door panel body is connected to the upper slide rail module, and its lower part is supported by the lower slide rail module. The upper slide rail module includes an outer slide rail, an inner slide rail, ball bearings, and a connector. The outer slide rail is disposed on the upper part of the carriage door frame, and the inner slide rail is embedded in the outer slide rail. Ball bearings are disposed between the inner and outer slide rails, so that the inner slide rail reciprocates within the outer slide rail. A connector is disposed on the inner slide rail, and the connector is also connected to the door panel body.

[0007] The sliding door assembly for train carriages further includes a limiting assembly, which includes a limiting screw, a return spring, and a cover plate. Limiting through holes are evenly spaced along the length of the outer slide rail, and slots are made at both ends of the inner slide rail. Through holes are made at the bottom of the slots, and limiting screws are placed in the through holes. A return spring is placed behind the limiting screw, and a cover plate is placed at the slot opening. Thus, when the inner slide rail slides in the outer slide rail, the return spring applies a pushing force to the limiting screw. When the limiting screw enters the limiting through hole on the outer slide rail, the inner slide rail is temporarily fixed.

[0008] The sliding door assembly for train carriages has both outer and inner sliding rails made of profiles. The outer sliding rail has a "C" shaped cross-section, and the inner sliding rail has a "D" shaped cross-section.

[0009] The sliding door assembly for train carriages has positioning grooves on both sides of the inner slide rail, and ball bearings are disposed in the positioning grooves.

[0010] The sliding door assembly for train carriages has a hemispherical head for the limiting screw.

[0011] The sliding door assembly proposed in this utility model has the following advantages:

[0012] The original pulley rail structure is replaced with a ball bearing slide rail structure. When the handle is gripped and force is applied left or right, the door body, connected to the inner rail of the slide rail at the top, drives the ball bearings to roll, enabling the door to slide left and right and achieve the function of opening and closing. With the ball bearing slide rail structure, the stress is now evenly distributed between the ball bearings, solving the original defects of poor guidance and low load-bearing capacity. The limiting component, when the door body slides to the appropriate position, the self-locking pin is spring-loaded into the self-locking hole in the outer slide rail, achieving a self-locking effect. When the door needs to be opened or closed, only a slight force is needed to push the self-locking pin to compress the spring and release the self-lock. This completely eliminates the back-and-forth sliding of the sliding door caused by vibrations generated during vehicle movement, reducing the risk of injury to passengers. Furthermore, self-locking holes can be added at desired locations to allow the door to stop automatically as it moves.

[0013] The components proposed in this utility model have a simple structure. While increasing the load-bearing capacity of the guide rail, they also realize the function of moving and stopping the door panel body, and ensure the stability of the door panel body, reducing the risk of injuring passengers. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the sliding door assembly proposed in this utility model.

[0015] Figure 2 For this Figure 1 A partial schematic diagram of AA direction in the diagram.

[0016] Figure 3 For this Figure 1 A partial schematic diagram of the BB direction in the diagram. Detailed Implementation

[0017] The present invention will be further illustrated by specific embodiments below.

[0018] like Figures 1-3As shown, a sliding door assembly for a train carriage includes an upper slide rail module 1, a lower slide rail module 2, and a door panel body 3. The upper slide rail module 1 and the lower slide rail module 2 are respectively disposed on the upper and lower parts of the carriage door frame. The door panel body 3 is connected to the upper slide rail module 1, and its lower part is supported by the lower slide rail module 2. The upper slide rail module 1 includes an outer slide rail 11, an inner slide rail 12, ball bearings 13, and a connector 14. The outer slide rail 11 is disposed on the upper part of the carriage door frame, and the inner slide rail 12 is embedded in the outer slide rail 11. Ball bearings 13 are disposed between the inner slide rail 12 and the outer slide rail 11, so that the inner slide rail 12 slides back and forth within the outer slide rail 11. A connector 14 is disposed on the inner slide rail 12 and is also connected to the door panel body 3.

[0019] The sliding door assembly for train carriages further includes a limiting assembly, which includes a limiting screw 41, a return spring 42, and a cover plate 43. Limiting through holes 5 are evenly spaced along the length of the outer slide rail 11. Grooves are made at both ends of the inner slide rail 12, and through holes are made at the bottom of the grooves. The limiting screw 41 is placed in the through holes, and the return spring 42 is placed behind the limiting screw 41. The cover plate 43 is placed at the groove opening. Thus, when the inner slide rail 12 slides in the outer slide rail 11, the return spring 42 applies a pushing force to the limiting screw 41. When the limiting screw 41 enters the limiting through hole 5 on the outer slide rail 11, the inner slide rail 12 is temporarily fixed.

[0020] The sliding door assembly for train carriages has an outer slide rail 11 and an inner slide rail 12, both of which are profiles. The outer slide rail 11 has a "C" shaped cross section, and the inner slide rail 12 has a "D" shaped cross section.

[0021] The sliding door assembly for train carriages has positioning grooves on both sides of the inner slide rail 12, and ball bearings 13 are disposed in the positioning grooves.

[0022] The head of the limiting screw 41 in the sliding door assembly for train carriages is hemispherical.

[0023] The sliding door assembly proposed in this utility model has the following advantages:

[0024] The original pulley rail structure is replaced with a ball bearing slide rail structure. When the handle is gripped and force is applied left or right, the door body, connected to the inner rail of the slide rail at the top, drives the ball bearings to roll, enabling the door to slide left and right and achieve the function of opening and closing. With the ball bearing slide rail structure, the stress is now evenly distributed between the ball bearings, solving the original defects of poor guidance and low load-bearing capacity. The limiting component, when the door body slides to the appropriate position, the self-locking pin is spring-loaded into the self-locking hole in the outer slide rail, achieving a self-locking effect. When the door needs to be opened or closed, only a slight force is needed to push the self-locking pin to compress the spring and release the self-lock. This completely eliminates the back-and-forth sliding of the sliding door caused by vibrations generated during vehicle movement, reducing the risk of injury to passengers. Furthermore, self-locking holes can be added at desired locations to allow the door to stop automatically as it moves.

[0025] The components proposed in this utility model have a simple structure. While increasing the load-bearing capacity of the guide rail, they also realize the function of moving and stopping the door panel body, and ensure the stability of the door panel body, reducing the risk of injuring passengers.

Claims

1. A sliding door assembly for a train carriage, comprising an upper slide rail module, a lower slide rail module, and a door panel body, wherein the upper slide rail module and the lower slide rail module are respectively disposed at the upper and lower parts of the carriage door frame, the door panel body is connected to the upper slide rail module, and its lower part is supported by the lower slide rail module; characterized in that: The upper slide rail module includes an outer slide rail, an inner slide rail, ball bearings, and a connector. The outer slide rail is located on the upper part of the carriage door frame, and the inner slide rail is embedded in the outer slide rail. Ball bearings are installed between the inner and outer slide rails, so that the inner slide rail slides back and forth within the outer slide rail. A connector is installed on the inner slide rail, and the connector is also connected to the door panel body.

2. The sliding door assembly for a train carriage according to claim 1, characterized in that: It also includes a limiting component, which includes a limiting screw, a return spring, and a cover plate. Limiting through holes are opened at evenly spaced intervals along the length direction on the outer slide rail. Slots are opened at both ends of the inner slide rail, and through holes are opened at the bottom of the slots. A limiting screw is placed in the through hole, and a return spring is placed behind the limiting screw. A cover plate is placed at the slot opening. Thus, when the inner slide rail slides in the outer slide rail, the return spring applies a pushing force to the limiting screw. When the limiting screw enters the limiting through hole on the outer slide rail, the inner slide rail is temporarily fixed.

3. The sliding door assembly for a train carriage according to claim 1 or 2, characterized in that: Both the outer and inner slide rails are made of profiles. The outer slide rail has a "C" shaped cross-section, while the inner slide rail has a "D" shaped cross-section.

4. The sliding door assembly for a train car according to claim 1 or 2, characterized in that: Positioning grooves are made on both sides of the inner slide rail, and the ball bearings are set in the positioning grooves.

5. The sliding door assembly for a train carriage according to claim 2, characterized in that: The head of the limit screw is hemispherical.

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